Saturday, August 31, 2019

Investigating the effect of pH on the activity of phosphatase enzymes

My aim in this experiment is to see how well an enzyme (phosphatase in this case) reacts under a controlled temperature but a varying pH. Enzymes are known to be effected by pH and temperature. Both of these change how quickly the enzyme can process a substrate, so perfect matches must be found for each enzyme. At a low temperature, the enzymes reaction is so slow that any product is hardly noticeable. At a high temperature, or an extreme pH, the active site of the enzyme is damaged, so the substrate cannot be processed. I predict that the optimal pH for the reaction to take place will be more acidic when the temperature is set at 25o c and the length of incubation is 10 minutes. A suitable pH would be between 3 – 5oc. I conducted preliminary experiments and chose to incubate at 25o c instead of the higher temperatures for the simple reason that I knew that at a higher temperature (around 35o c), the reaction would go at its fastest, and I ran the risk of high magenta values (I wanted to keep them all under 1 so they could be easily compared). I therefore wanted to see what would happen at lower than 35o c as far as reactions were concerned, so I chose 25o c. My method was adapted from a worksheet on varying the temperature in the same reaction, keeping pH constant. 1. Label a microfuge tube with your initials. 2. Place two mung beans into the labeled tube. 3. Add 0.5ml distilled water into the tube containing the beans. 4. Crush and macerate the beans with a small glass/plastic rod. 5. Take a second microfuge tube and add water to the same level as the one containing the mung beans. (TO BALANCE THE CENTRIFUGE RACK) 6. Place the tubes into opposite holes of the centrifuge rack and spin for 5 minutes at maximum speed 7. After spinning, draw off as much of the clear supernatant above the pellet as possible and place into a clean microfuge tube. This solution now contains the enzymes for the experiment. 8. Using a graduated pipettor, add 100?l of sodium carbonate (the buffer solution in this experiment). 9. Then add 20?l PPP substrate to each of the eight microfuge tubes. Wash the pippettor thoroughly. 10. Finally, add 20?l enzyme solution into it. 11. Repeat steps 8 through 10 as quickly as possible, to collect all the microfuge tubes. Now insert them into a Styrofoam float and place this on the surface of the water bath for 10 minutes, timed with a stop clock. 12. Now add 100?l Sodium Carbonate to stop the reactions. 13. Estimate the colour of the magenta using the magenta filters provided. The possible variables in this method are the volumes of substrate, enzyme and sodium carbonate along with the time in the water bath and the temperature of the water bath. The volumes will be measured as closely as possible with a micropippettor. Results: The number in the test tube column is the magenta filter that corresponded to the colour of the completed reaction. The higher numbers mean more reaction, lower means less reaction. Every time that I added the sodium carbonate to cancel the reaction, the colour change to magenta was sudden and with a small amount of shaking, the whole liquid was tinted purple. I managed to take 2 readings for each pH, and therefore average them. Without doing the preliminary experiment, I would have never known what temperature to try. This graph shows clearly how good my results were. They fit with my prediction that the optimum pH for a Phosphate enzyme is around pH 3-5, and therefore we can say that it requires a more acidic pH than an alkaline one. My conclusion, using this graph as evidence, is that a Phosphate enzyme works at its maximum speed at a lower pH, in this experiment pH 4, taking into account the other variables in the experiment. For instance, at a different water temperature, the pH required may vary. As mentioned before, as the temperature raises, so does the probability of denaturation. From the results, I assume this is beginning to happen before pH 5. But these results are not precise. I have no way of knowing which side of pH 4 the reaction is faster, i.e. if pH 3.9 is faster than pH 4, or pH 4.1. The pH4 that I got as being the fastest speed may not be the pinnacle of the reaction curve. Huge accuracy errors could have been made, for instance: * Was the precise equal amount of liquid put in each of the tubes? Probably not, the micropipette was hard to use and had very small scales. * Some reactions began before others when preparing to put the microfuge tubes into the water bath. You had to work incredibly quickly to prepare all of the tubes in as fast a time as possible. However, seeing how precise my results were, either I made the same mistakes over and over, therefore giving a whole set of incorrect results, or I did them all very well. This is the risk in using this method. If I were to change the method, I would get far more precise pipettes and find a way of adding the enzyme into the solution as quickly as possible, like getting 8 micropipettes filled and ready, then using one for each microfuge tube in quick succession. If this experiment was to be taken further, I would get people to work together and double check their accuracy as they go, so that they can do the final step before incubation in half the time or less. Instead of changing the pH, they could change the variable concerning the temperature of the water bath to be incubated in. Another possibility is that the different volumes could be changed to see how the results vary, of course only one at a time. For example, change the amount of enzyme to be put into the mixture, continue the experiment with other set variables and see what type of results you get.

Friday, August 30, 2019

The Ripple Effect of Smoking

The Ripple Effect of Smoking It has become common knowledge that smoking is bad for people’s health, nonetheless people continue to smoke. To be honest, that is fine. If people want to endanger themselves by smoking then I wish them a swift and peaceful end (though most smokers die a slow and agonizing death). What is not acceptable is the effect that smoke has on non-smokers who have almost no way of getting away from smoke unless they want to stay in their house. Smokers affect everyone around them for the worse. Smoking should be restricted or banned from all public places because the health of non-smokers should not be jeopardized by secondhand smoke. As stated before, almost everyone knows and accepts the fact that smoking is unhealthy. For those who don’t know, Phillip Morris, one of the leading tobacco manufacturers, must tell them that very fact. As part of a settlement agreement with the government, Philip Morris must publish that they â€Å"agrees with the overwhelming medical and scientific consensus that cigarette smoking causes lung cancer, heart disease, emphysema (where the lungs basically break down), and other serious diseases inn smokers† (Philip Morris U. S. A. 1). Yet some don’t know how bad smoking actually is for people, both for the smokers and non-smokers alike. According to Michele Late, author for The Nation’s Health, published by the American Public Health Association, â€Å"A new report by the U. S. urgeon general found that smoking causes disease in almost every organ of the human body. † So aside from common knowledge that smoking causes lung cancer as well as other respiratory problems and diseases, people need to know that it also causes cancer in almost every other part of the body. Among those diseases are, â€Å"leukemia, cataracts, and pneumonia as well as cancers of th e pancreas, cervix, and kidneys† (Late). According to the surgeon general’s report, â€Å"Other complications linked to smoking included diabetes complications, hip fractures and reproductive complications† (Late). Why anyone would want to smoke with the knowledge that smoking causes these problems is beyond reason. Ultimately though, it is a person’s choice as to whether they want to cause harm to themselves by smoking or not. Although people may choose to smoke, it is unfair of them to inflict the consequences of their choice upon others. The smoke that smokers put out into the air is nearly as harmful as what they take in to their own systems. When non- smokers happen to be in the vicinity of a smoker they inhale what the smoker puts out. This is called secondhand smoke. A definition from Philip Morris U. S. A. ’s website states that, â€Å"Secondhand smoke, also known as environmental tobacco smoke or ETS, is a combination of the smoke coming from the lit end of a cigarette plus the smoke exhaled by a person smoking† (Philip Morris U. S. A2). Secondhand smoke is almost as harmful to the non-smoker as the firsthand smoke is to the smoker. According to William V. Corr, the executive director of Campaign for Tobacco-Free Kids, â€Å"Secondhand smoke contains over 4,000 chemicals and 69 known carcinogens, including formaldehyde, cyanide, arsenic, carbon monoxide, methane, benzene, and radioactive polonium 210. With all these known cancer causing products in secondhand smoke, it is not surprising that, â€Å"secondhand smoke is proven to cause lung cancer and serious respiratory illnesses† (Corr). Secondhand smoke also causes, â€Å"asthma, respiratory infections, cough, wheeze, otitis media (middle ear infection) and Sudden Infant Death Syndrome,† (Philip Mor ris U. S. A. 2) in children. According to Donna Halvorsen, writer for the Star Tribune in Minneapolis, â€Å"The CDC (The Centers of Disease Control and Prevention) estimates that 3,000 nonsmokers die of lung cancer caused by secondhand smoke each year. An additional 35,000 die of heart disease also from secondhand smoke†¦Ã¢â‚¬  It is unfair to make those who choose not to smoke be damaged by the secondhand smoke of a smoker. What is the solution to this problem? The most effective solution is to ban smoking in all public places. If people who want to smoke then they can do so in the privacy of their own homes, where they can only hurt themselves and their loved ones. California has taken the first step by banning smoking in most indoor establishments. Yet more has to be done. It needs to be banned outdoors in public as well. Though the theory that outdoors smoke dissipates has some validity, if you are within 20 feet of a smoker, you are still affected. Other atmospheric conditions can cause you to be affected from farther away. There will be arguments against this solution, the main one being personal freedom. Opponents will say that their personal freedom to smoke is being violated. Though right now, smokers are violating millions of people’s rights. A non-smoker’s right to live in an uncontaminated and healthy environment is being violated by the smoker who chooses to engage in this repulsive habit. A non-smoker’s right to a longer, pain free life is being taken away by the diseases they get from inhaling secondhand smoke. This solution, though the most effective, is also the most extreme. Until we reach an ideal society where smoking is nonexistent, there are ways to help alleviate the problems posed by secondhand smoke. One is to have separate rooms in public places with high quality air filters. They have started doing this in airports. A new renovation is smokeless cigarettes. A U. S. company that makes this product is Longherb Health Products, Inc. According to them, â€Å"This smokeless product, which consists of a menthol or cinnamon-flavored filter material – like that used in a cigarette filter – looks and feels like a cigarette, but contains no tobacco or nicotine, and does not burn. The smokers simply draw or inhale on Smoker's Option Cigarettes whenever they have the desire to smoke cigarettes. † Unfortunately there is the problem that cigarettes are addictive. Some who are addicted to cigarettes need one every hour. An addiction causes physical pain when you don’t have your addictive substance. To help people quit there are many different solutions. They range from patches, to gum, to medication. Philip Morris U. S. A. has links on their website that can help you quit smoking, one being QuitAssistâ„ ¢. The information for quit assist was written by and is maintained by Cheryl K. Olson, Sc. D. of Harvard Medical School, as well as a review board. Secondhand smoke is a problem that must be dealt with. There are alternatives to smoking and ways to deal with secondhand smoke. Smoking must be banned or severely restricted in public for the well being of the multitudes of innocent non-smokers.

Thursday, August 29, 2019

Causes and Consequences of World War I

Belief in inevitability of war and advocacy of war to become supreme major cause for WW1. 5. Anglo-german naval rivalry Britain was supreme at sea and was challenged by germany. Britain couldnt accept this. The rivalry culminated in WW1. 6. Absence of international organisation Concert of europe was informal group of nations aftr napoleans defeat but couldnt control its member and didnt represent the entire free world. The system of pacific settlement of international disputes set up by the hague conference was unsatisfactory. And couldnt contain imperial rivalries. 7. Negative role of the press in creating war psychology despite attempts of governments to normalise their relations. 8. Autrian and serbian rivalry Austria-hungary wanted access to sea at the cost of slav territories and serbia represented slav nationalism. The two had contradictory aims. This led to a conflict of interest and was encouraged by the russian czar as well building grounds for war. 9. Personal ambitions of leader. Kaiser william II of germany, austra-hungary, russian leaders(czar and his wife). 10. The Sarajevo incident Annexation of bosnia-herzegovina by austria in 1908, 2 balkan wars, italian annexation of tripolo ,moroccan crisis along with the japanese threat to peace in the background, the assassination of the crown price of austria-hungary, archduke franze ferdinand with his wife in sarajevo june,1914 was a direct cause for WW1. Consequences The results of the great war were almost as numerous as its causes. By the end of the world war in 1918, american president woodrow wilson proposed peace and made a statement of war aims in his famous 14 points 1. Open covenant of peace,openly arrived at and Abolition of secret diplomacy 2. Absolute freedom of navigation at sea, outside territorial waters in peace and war except by international action. 3. Removal of eco barriers and establishment of equal trade conditions 4. Reduction in national armaments to the point only needed for domestic security 5. Free,open minded and impartial adjustment of all colonial claims 6. Evacuation of all russia territory and allowing its to politically develop in acc with her own national policy 7. Evacuation and restoration of Belgium 8. Same for france and return of alsace and Lorraine to it. 9. Readjustment of italian frontiers along clear line of nationality 10. Freest opportunity of autonomous devt for people of austria-hungary 11. Evacuation and restoration of romania,serbia and montenegro and free access to sea for serbia 12. Autonomous devt of the non turkish possessions of the sultan 13. Resurrection of independent polan with access to sea. 14. Formation of a general association of nations for the purpose of affording mutual guarantees of pol independence and territorial integrity to small n great alike. These were accepted but not followed by the european nations of the peace conference and were later rejected by the american senate after woodrow wilson lost his popularity and presented them befre the senate. Paris peace conference Fightin in WW1 ended with complete surrender of germany in nov,1918. Representatives of allied and associated powers assembled at paris on 18 jan 1919 to draw a new map of europe and the world. Selection of paris as venue unfortunate decision. It was done to take revenge from germany for the french humiliation at the hall of mirrors in versailles aftr the french defeat in the franco-prussian war. The conference was a victors club as none of the leaders of the defeated countries attended it as they were allowed no say in the conference. The conference was dominated by 4 leaders- woodrow wilson, PM lloyd george of britain, PM of france george celemnceau, italian PM vittorio orlando. It was at this conference that the treaty of Versailles was signed, officially ending WW1 on 28th july 1919. Provisions of treaty of versailles 1. Territorial provisions territorial changes in respect of germany. †¢alsace and lorraine returned to france †¢eupene,malmady and mernet given to belgium east germany given to posen †¢ Parts of west prussia and silesia to poland. Poland given access to to sea at the cost of german by way of corridor in west prussia. †¢port memel and hinterland taken away but fate undecided. Later given to lithuania. †¢coal mining area of saar demanded by france by nt given to france. Only under temporary control of france. Aftr 15 years- plebiscite conducted whether saar wants to go to germany, france or remain with league of nations †¢ Ausrtia-hungary broken up into small states. New austria small ger speaking landlocked state. Due to fears of france, germany and austria prevented from uniting without permission of league of nations of which france was permanent member. †¢small german territory also given to czechoslovakia. †¢germany also lost all colonies which were taken up by other powers of league of nations. 2. Economic provisions of reparation. †¢War indemnity cudnt be imposed on germany because a)cost of war borne by allies impossible to return for germany b)woodrow wilson against war indemnity since war cost werent only borne by allies but also by defeated powers. so allies demanded compensation for indiscriminate bombing and loss of lives at the hands of germany †¢no payable amount was fixed. A reparation commission set up to determine the extent of civilian losses keeping in mind germanys capacity to pay back. †¢germany was to gives horses and cattle to france n belgium and coal to france,belgium n italy. It was to surrender it submarine telegraph cables to allies and surr ender all merchant ships more than 1600 tonnes. †¢default on part of germany was punishable by allies †¢customs union between Luxembourg and germany abolished to end german control over luxembourg economy. repartion commission submitted its report in april 1921 and total amount payable by germany was 6,600,000,000 pounds. †¢germany ws to giv trade facilities of certain commodities to allies. Acces to sea to Czechoslovakia and Switzerland. †¢german rivers and canal internationalised. 3. Disarmament †¢principle of reduction of arms incorporated in covenant of league. But it was not followed by allied powers. There were severe disarmament provisions for germany that made her a military cripple †¢army limited to 100,000 troops and 4000 officers. Recruitment only voluntarily. †¢navy limited to 6 battle ships,6 light cruisers,12 destroyers and 12 torpedo boats. No submarines. Strength of navy only 15000 men and 1500 officers. War ships in excess were to be dismantled. †¢debarred from having an air force and naval aircrafts. †¢german general staff abolished. Allied control commission set up to supervise enforce of these clauses. Set up ws to be funded by germany again. 4. War and guilt crimes †¢germany declared solely responsible for war by article 231 of treaty. german emporer kaiser william II was found guilty of violation of treaties and international law. He sought asylum in netherlands who refused to hand him over to allies for a trial. †¢german people could never accept that their country alone was responsible for the war. 5. Provisions regarding international organisation †¢1st part of treaty provided for the establishment of a world organisation to be known as league of nations. †¢ Its constitution,called covenant, was adopted at the paris conference and included all peace treaties. It was to consist of an assembly,council and secretariat. †¢ A permanent court of international justice and international labour organisation was to be set up. †¢ These bodies were meant to maintain peace,settle international disputes peacefully,punish countries who may break the covenant and improve social and economic life all over the world. The guarantees of the enforcement of the treat were written in part XIV according to which until successful execution of the treaty the entire Rhineland(west of rhine with bridgeheads) would be occupied by allied powers. Germany was ultimately reduced from a world power to an insignificant small power. She was forced to give up monarchy and accept democracy which was something the country wasnt prepared for. The treaty was so humiliating that the german had sworn revenge for it. The seeds for WW2 had been sown. Hitler later exploited this situation and imposed dictatorship in 1933 and began rearmament under the excuse that the allies had not reduced their armaments. This led to another arms race,violation of the treaty and eventually culminated in the second world war. Other treaties †¢treaty of st. ermain with austria on the model of treaty of versailles with excpetion of the reparation clause. †¢treaty of neuilly with bulgaria †¢treaty of tianon with hungary †¢treaties of sevres and luasanne with defeated turkey to separate its constituents and reduce military capacity and pay reparation Fall of Ottoman empire Its fall during the war created many newly independent middle eastern nation states which were quickly taken over by britain france etc. Economic depression The end of the war also caused a temporary economic bubble which soon popped and led to the great depression.

Wednesday, August 28, 2019

Marketing Essay Example | Topics and Well Written Essays - 2500 words - 4

Marketing - Essay Example Here several different aspects of the company like, marketing tools used by the company, the issues faced in terms of the customers, control system issues faced by the company and several other elements will be discussed. Overview of Company The Hong Kong and Shanghai Banking Corporation Limited (HSBC) group is one of the most global banks and the company has been able to reach out to a wide range of markets. Most of the principal companies of the group opened over a century ago and the companies have had a wide range of achievements and also provide excellent variety. The company has differentiated its brand name and image and is recognised by the slogan of ‘The World’s Local Bank’ (HSBC, 2011). The bank is headquartered in London and is among the largest banking and financial services organisation. The company has over 8000 offices across 87 different countries and is listed on the London, Hong Kong, Paris, Bermuda and New York stock exchanges. The company cater s to a wide range of customers and serves as many as 100 million customers across the globe based on four of its main services, i.e. Performance financial services, commercial banking, Private banking and also the global banking (HSBC, 2011). Reasons for Choice The main reason to choose this bank is the international nature of the bank. Also, HSBC is among the very few banks equally famous in Europe, America as well as Africa and Asia. The company’s brand name and image that it has created allows it to become a name for every home. Also, HSBC has been extremely successful in marketing itself over the years and the bank has developed a strong brand image across the globe. Hence this is worth studying. SWOT Analysis of HSBC The table below provides a gist of the SWOT of HSBC. A detailed analysis has been included below the table Strengths Weaknesses * Strong Brand Image * Well Capitalized * Strong Market Presence * Global Presence * Excellent Marketing Strategies * Strong Perfo rmance During the economic slowdown as well * Strong use of Information Systems * Excellent Online Systems * Strong ability to stay in track with market need * Focus on different target markets * Strong and well developed marketing strategies at a global level * Although the company has performed well during the economic slowdown, higher risks and compromise of activities has been present * Large losses due to the Sub Prime Crisis * High Mortgage rates, without considering the external fall in rates * Employee Issues * Lacking strong customer care * Brand Image * Loss of the global marketing director Peter Stringham led to various confusions and chaos Opportunities Threats * The strong capitalization of the company opens various options to acquire better assets * Available capital for take over * HSBC has a strong position in the market and this can be used effectively to outperform other banks * Trusted Bank across the globe thereby giving it higher chances for better recognition w orld wide * Issues like the Sub Prime *Falling property rates leads to higher defaults from the home owners there by leaving the bank with high bad debts * Recent financial losses has impacted the customers as well as the stakeholders thereby leading to reduced trust in the bank HSBC has created a business and brand image which has been constant across the world. The company has been able to make a number of acquisitions across the globe and HSBC has been gained great success in terms of the corporate

Tuesday, August 27, 2019

Potato Osmosis Assignment Example | Topics and Well Written Essays - 2500 words

Potato Osmosis - Assignment Example The researcher states that even the simplest unicellular protozoan needs to communicate with the external environment for survival because it needs to ingest food, eliminate waste products and toxins of metabolism and exchange gases through respiratory mechanisms. This communication is further developed in a more intricate manner in the multicellular organisms where exchanges take place within and between the cells in carrying out their assigned physiological functions. All cells are bound on the outside by a limiting membrane akin to a boundary wall which separates and protects the cellular components from the external environment. This membrane is known as the cell wall and the plasma membrane in plants and animals respectively. This membrane is a specialized component which selectively permits passage of water and other components across it either inward or outward depending upon the gradient of the fluid environment and internal contents or due to selectivity for particular molec ules through specialized pores or channels. Two of the processes by which such exchanges take place are known as diffusion and osmosis. Diffusion is simply the movement of molecules from a region of higher concentration to a lower concentration (intranet.landmark.edu). Diffusion occurs within a single compartment or environment where molecules move from a region of higher concentration to a lower concentration until equilibrium is reached. Such diffusive activity can take place inside a single cell. Osmosis too is also a movement of components within a solution either from a higher gradient to a lower one or selectively under active transport systems controlled by cellular physiology, but this diffusion occurs across a semi-permeable membrane such as the plant cell wall or the animal plasma membrane. The plant or the animal cell walls are selectively permeable for certain molecules and do not allow other molecules to pass through them.

Monday, August 26, 2019

Emerging issue Essay Example | Topics and Well Written Essays - 750 words

Emerging issue - Essay Example The health organization also estimated that by 2015, roughly 2.3 billion grownups will be overweight, as well as roughly around 700 million will be obese. Also, the issue of childhood obesity is international and is gradually impacting many middle- and low-income nations, especially in urban settings (Poston & Foreyt, 2000). Internationally, in 2010, the total of obese children below five years was projected to be more than 42 million. Nearly 35 million of these children are residing in developing nations. Obese and overweight children are expected to stay obese into old age and expected to develop noncommunicable illnesses such as cardiovascular diseases and diabetes at a younger age (Poston & Foreyt, 2000). There are three major methods of treating this problem - dieting, exercising and then weight loss surgeries (Koeck, E. et al., 2013). When it comes to dieting, high-carbohydrate, low-fat plans, normally including whole grains, and fruits, and high-fiber along with vegetables are related to good overall health (Koeck, E. et al., 2013). These diets place stern limitations on nutritional fat. Diets such as caloric juice are meat to make someone reduce substantial fat in seven days. Severe exercise, on the other hand, like the one used by military recruits in Singapore leads to a 35-lb weight loss in a period of 5 months. Exercise eats away the body fat and allows someone to reduce weight with time. Finally, the main surgical procedure, Bariatric Surgery, comprises of a number of procedures performed on obese people (Koeck, E. et al., 2013). Weight loss is attained through reducing the mass of the stomach with a gastric band. The bariatric surgery has had a lot of controversy. In two studies conducted by Koeck, E. et al. (2013) and Sjostrom, L. et al. (2004), they reveal that patients who have underwent bariatric surgery as children and attained normal BMI have lived like that through adulthood, but they reveal that adults who undertake the surgery have relaps ed to obesity in later stages of their lives. Sjostrom, L. et al. (2004) furthermore classifies the matter claiming that five of the 11,453 subjects (0.25 percent) who underwent the procedure in a 2010 study who underwent surgery died postoperatively. Also, according to Sjostrom, L. et al. (2004), 151 patients (13.0 percent) in a study involving 1164 obese individuals, which the authors were tracking, had postoperative problems (internal bleeding – 0.5 percent, thrombosis or embolism – 0.8 percent, deep infections – 2.1 percent, wound problems – 1.8 percent and pulmonary problems – 6.1 percent). In 2.2 percent of the patients (26), the postoperative problems were severe enough to call for reoperation (Sjostrom, L. et al., 2004). Despite this, critics still claim that the surgical intervention is the best way to heal obesity. The research of bariatric surgery would benefit the youth, grownups, bariatric surgeons themselves, dieticians and other stak eholders concerned with the intervention of obesity as a worldwide calamity (Stern & Kazaks, 2003). It would benefit the youth of today because, as earlier stated in this paper, youths who successfully undertake the surgery and attain a BMI have the chance of living the rest of their lives with a normal BMI, unlike adults. Adults are advised to be cautious, on the other hand, because research shows that they have a higher chance of relapsing to obesity after undergoing surgery. This research confirms

Sunday, August 25, 2019

Self-Reliance Essay Example | Topics and Well Written Essays - 500 words

Self-Reliance - Essay Example Conformity, consistency, and regret are three of the barriers to self-reliance (â€Å"Self-Reliance†). People tend to conform to societal expectations and in an attempt of doing so, lose track of their personal goals and desires. Consistency is stated as a barrier to self-reliance because it deprives an individual of the opportunity to experience new things in life, challenge the beliefs inculcated into him/her by others which is required to make informed decisions, and develop more skills. Consistency is repetition and it is a barrier to creativity and innovation, hence also a barrier to self-reliance. Regret is a barrier to self-reliance because it is regressive in effect and does not make any valuable contribution to an individual’s life. It is good to regret but only to the extent that the individual realizes where he/she has done the mistake so that it can be corrected in the future. Regretting about things that the individual cannot do anything about is not produc tive. I can relate to Emerson’s viewpoint on the barriers to self-reliance. I love meat but in an attempt to conform to the expectations of most members of my family who are true vegetarians and consider it ethically unjustified to eat meat, I have remained a vegetarian going against my nature for a long time. I do physical workout quite often. I have noticed that I need to keep changing the ways I do physical workout in order to maintain my interest in the exercise. The same kind of exercise done repeatedly becomes boring. Likewise, consistency in anything creates the room for boredom. My grandfather died a few years ago. I often regret not having spent much time talking to him while he was alive. This regret and realization has made me more caring and loving toward the elderly. I have used my regret in a constructive way to achieve self-reliance rather than letting it become a barrier to that. Steps I can take to achieve self-reliance include taking measures to remove the barriers to

Nutrition and fitness (answer the questions) Essay - 2

Nutrition and fitness (answer the questions) - Essay Example While exercising, muscular endurance is essential because the continual pressure exerted on the muscles makes it possible to carry out heavy tasks without becoming tired. There exists a relationship between muscular strength and muscular endurance because one cannot exist without the other. Muscles occupy forty percent of body mass. The body depends on muscles for movement and because of this mass they are responsible for a portion of the metabolism that takes place inside bodies. Strong, well toned muscles help make work that had seemed difficult become easy to do and complete. To increase muscle endurance, an individual has to have strength in the muscles. This is because if a person has the strength, then building up endurance will happen rather quickly while a person with little or no muscle strength may take longer to increase muscle endurance. The continual exertion of force on the muscle with much heavier loads over a long period causes the muscle to harden and expand thus increasing the endurance level the muscle has to stress. This goes to show that muscle endurance goes together with muscle strength. This means that these two processes depend on each other for optimum results. Training teenagers is usually very difficult since they are impatient. This is usually very difficult since they work on gaining muscle endurance without first putting on muscle strength and want results in the quickest way possible. They use any avenue to get the results they need. This is usually very difficult since they work on gaining muscle endurance without first putting on muscle strength. Such actions lead to catastrophic results and injuries such as strains, sprains, dislocations, fractures and tendonitis. Further disregard may lead to other chronic complications, for example, nerve damage, bone stress injuries, muscle overloads and rotator cuff

Saturday, August 24, 2019

Seperate program for gifted and talented students (History of Research Paper

Seperate program for gifted and talented students (History of Education) - Research Paper Example with extra support so that they can achieve what they are capable of achieving instead of being restricted by the same curriculum delivered to the whole body of students. A number of factors can affect the ability of gifted and talented students to achieve, even if they are provided with additional stimulating material, and these include their physical (health) and emotional (psychological) states, degree of interest, the relationship with their teacher, and their learning environment. Nonetheless, we shall consider two reasons supporting separate programs for gifted and talented students as well as two reasons for not supporting such programs. The main argument for supporting them is that by not doing so, there are missed opportunities for the students themselves and also the society in which they could have made useful contributions. Research by the National Commission on Excellence in Education highlighted that over half of gifted school students in the U.S. fail to meet their tested ability with comparable achievement (NCEE, 1983). Although this is an old assessment, the situation is not much different nowadays. The present No child left behind policy for example does not cater to gifted students. Thus, many gifted children are not being given the opportunity to exploit their talents. They are simply not being sufficiently challenged (Pulliam & Patten, 2006, p.185). Even the 2011 education budget has been described as a missed opportunity by the Council for Exceptional Children and the Education Act does not directly address the unique learning needs of gifted students (Shinn, 2009). Another reason for supporting gifte d students is that due to their untapped potential and being in asynchronous development, they tend to be more vulnerable (CDI, 2010). Being asynchronous means that their intellectual capacities could be developing at a greater rate than their physical and emotional capacities. Therefore, it is important to help gifted students lest their

Friday, August 23, 2019

Characteristics of Highly Effective School Administrators Essay

Characteristics of Highly Effective School Administrators - Essay Example e school administrator must be able to communicate goals and vision of his/her institution, and plans, achievements and challenges that the institution faces. The administrator should also be able to attract input from other stakeholders and develop the stakeholders support for ease in development and implementation of administrative policies. Administrative leadership, also known as managerial leadership, is another characteristic of an effective administrator. This feature incorporates abilities to balance between priorities, delegate leadership roles, facilitate innovation and improvements, and to ensure accountability. In balancing priority, an effective administrator identifies activities with their priorities and allocates time, in duration and order, to each activity to ensure effectiveness in completion. An administrator with the trait also identifies and recognizes potentials of each subordinate and promote growth. In addition, the successful administrator is accountable, setting standards for other to emulate, and leads in innovation and development of potentials. Highly effective school administrators also have educational leadership trait, also known as instructional leadership. The administrators ensure that instructional ventures are best on reliable vision towards effective learning. The administrators also ensure that instructions are improved continuously and that high levels of expectation and favorable culture for development are established in their

Thursday, August 22, 2019

Begging in India Essay Example for Free

Begging in India Essay Begging in India is a fashion, a compulsion, a profession, a privilege and a recreation. The number of beggars in India is much larger than in other countries. Our heads hang down in shame when we read description of this institution given by foreigners in a hateful manner. To the Westerners, India is a land of the mendicants and snake-charmers. Beggars are found in villages and towns, on roads, crossings and footpaths. But their favorite haunts are bathing Ghats, temples, religious or festival fairs, railway stations, trains and bus-stands. It is a big nuisance to be confronted by street beggars at all odd places. Like the God Almighty they seem to be omnipresent. You are waiting for a bus at the bus-stand or walking down a road with your friend, they appear from nowhere and start an endless volley of entreaties and blessings. They follow you close at your heels and keep pestering you till you give them some coins out of a sense of sheer disgust and helplessness. There are various types of beggars in India. The religious; beggars cluster round pilgrim centres and attract public attention by their wonderful feats. There are crippled and disabled beggars who remain lying on road-sides or at railway or river bridges arousing sympathy of the passers-by, making all kinds of pitiful gesture! ; There are beggars who are quite stout and able-bodied. Begging for them is not a necessity but a profession. They are idlers and rascals who are unwilling to earn their bread by hard work. They often operate in gangs and their leaders hold a bank balance that would be credit to an important business magnate. They are disguised as physically disabled or handicapped. They use as tools young women with new born babies or young children. Whenever they find an opportunity, they commit thefts and crimes, including kidnapping of children. At some places we come across modernized beggars dressed in suits. Such beggars lead a luxurious life in places of retirement. There are travelling beggars who are particularly seen in trains. The collect alms for orphanages, cow-shelters and widow-shelters, which exist only in their minds. Foreigners are their most privileged victims. Begging in India has developed into an art and a full-fledged profession. The practice of begging is the result of the poverty of the country and the deep-seated religious sentiments and superstitions of our country men. Unemployment, illiteracy, ignorance and ever-increasing population are other causes of begging. It cannot be denied that the distribution of wealth is not fair and the gulf between the rich and the poor is very wide. The rich and the well to-do accept extreme poverty and begging as a necessary feature of society. Religion seems to teach them that charity is the surest passport to heaven. Beggars, in themselves are problems and they create other social problems by kidnapping women and children; Sometimes, we begin to doubt the integrity of spiritually and morally high persons and ill treat them because pink clothes have become the common dress of beggars in India. Charity, in our country, enjoys religious sanctity. But it is conveniently forgotten that misplaced charity is good neither for the one who shows it nor for one to whom it is shown. It encourages idleness and in activity. It produces parasites and wastes a sizeable amount of human power. Laws should be legislated for abolishing begging and offenders should be severely dealt with. The government should be establish work-houses where able-bodied beggars should be kept and compelled to work. The people, in general, should be made conscious of the fact that beggars are the greatest enemies of the country and there should be country wide agitations against beggars. The crippled and disabled beggars should be maintained by the State, The disabled and diseased beggars and orphaned children and destitute women deserve particular attention from the State. There should be asylums and training centres for such people. Here they should first be treated for their ailments and then trained in different kinds of handicrafts and cottage industries. The success of some of the schools for the blind, the deaf and the dumb shows the true solution of the problem. In place of individual charity, funds and donation should be raised on a large and organized scale for the relief of these unfortunate people. Indeed, beggary if so intricately women into our way of life that, no matter how corrupt and scheming it gets, it shall continue to claim attention. If not from the educated, from the illiterate and the superstitious. Tragedy stares at us round every corner. Begging is one of the worst social evils that denegrade India in the eyes of the world. The earlier it is eradicated, the better it would be in the interest of our nation.

Wednesday, August 21, 2019

How to Analyze Sources and Information

How to Analyze Sources and Information By Riley Kohl       Today, we live in a world that runs on information. Information is gathered, shared, bought, and sold. More and more, individuals are consuming vast amounts of information and using it to shape themselves and the way they perceive the world around them. In our journey to reach new heights of understanding, we construct for ourselves a tall watchtower, with each brick being a new piece of information. Far too often, however, we dont ask ourselves a crucial question: what if this new brick has cracks? My goal is to explain why you need to be able to appraise the quality of the information you consume and to give you the tools to do so reliably and efficiently. A Growing Need One of the most commonly used sources of information is the news, specifically the mainstream media. In recent years, there has been a gradual, observable decline in the quality of journalism. Noticing this, the American people have subsequently displayed a gradual decline in the level of trust they place in the mainstream medias ability to report information in a trustworthy and unbiased manner. In a Gallup poll conducted in 2016 with a random sample of 1,020 adults, only 32% professed to having a great deal or a fair amount of trust in the mainstream media.[1] A graph of this trend is provided in Figure 1. A Practical Demonstration In order to better grasp the methodologies of information analysis, and the need for such skills, a practical demonstration is best. On November 20, 2015, CNN published an article alleging that President-elect Donald Trump made a definitive statement regarding the implementation of a Muslim database.[2] Several hours later, an article was published by the Gateway Pundit claiming that the conclusions presented by the CNN article were based on falsified evidence.[3] Figure 2 provides a side- by-side view of the article headlines. This leads to the first, and most important, critical rule of information analysis: no source is above scrutiny because no source is infallible. CNN is a major media outlet. The first reaction of the average person would be to simply trust them over the Gateway Pundit, a relatively unknown source. The CNN article also provides a video which seems to support the claim presented in the headline. The two most notable arguments presented by the Gateway Pundit article are that the CNN video is heavily edited and that the reporter deliberately pushed a vague, unspecific question. The first step the reader must take at this point is to watch, or re-watch, the CNN video. It is clear that the video is edited, but this practice is not unusual. Videos provided in articles and reports are often edited for time purposes, cutting out unnecessary information in order to deliver the important information in a timely manner. Thus, we arrive at the second critical rule: when in doubt, consult the raw data. This is not always an easy task. In scientific reports, the raw data is often extensive or presented in a format that is difficult for laymen to understand. News articles, on the other hand, often draw their data from raw video or official statements. Given the positions presented by the two articles, at most only one of them can be correct. Therefore, at least one of these articles must be false. The result of this is that a person who believes the false article will likely form an opinion on Donald Trump, then a Presidential candidate. This newly assimilated information might affect a choice of action taken by the reader, such as who they vote for, which could have consequences as significant as deciding the next political leader of the United States of America. Placed in this perspective, it is clear that information and misinformation can be a powerful, dangerous forces. It is imperative that they a re properly evaluated by the readers. Methodologies for Appraising Information Some of the simplest methods for appraising the quality of an information source involve asking basic questions. These include confirming whether or the not source is unbiased, comprehensive, current, and clear.[4] While the latter questions are fairly simple, the question of bias is a tricky beat to handle. Bias is fundamentally difficult to avoid when writing, or choosing not to write, articles or reports. These are written by human beings, who have their own ingrained outlooks and opinions on the world. Additionally, the existence of bias extends outside the article itself, into the meta realm of publication. There can exist a bias in what information is published and what information is not. A news outlet might choose to only report on the legitimate scandals of a political figure and publish nothing regarding their accomplishments. Even though the published articles may be true, the bias still exists. A very common misconception is that the authorship of an information source is a good measure of its quality or trustworthiness. While this can serve as a significant, time-saving shortcut, it can also lull the reader into a false sense of security. The most well-respected news outlet can publish erroneous articles, and the most sensational tabloid can publish articles containing nothing but the truth. A final concept to note, before proceeding to a more orderly listing of methodologies, is the writing itself. The writing styles of information sources can vary widely based on their intended audience and purpose. A scientific report on geological predictions based on survey data will vary in appearance and flow from a news article reporting on a recent crime wave. Despite this, the hallmark of a good article lies with its objective reasoning. There should be a clear logical flow from the raw information being cited to the final conclusions drawn and presented by the author.[5] Faulty logic or subtle fallacies can take factual evidence and output misleading conclusions. A Simple Checklist for Appraising Sources Ask yourself the three Cs: Is it comprehensive, clear, and current? Look to see if the source has a logical flow of objective reasoning. Identify the purpose of the article. What is the writer trying to convey? Identify any potential for bias. Does the author have an underlying motive? Cross-reference with alternative sources. Consult the raw data if necessary. Remember that is is alright to decide that no definitive conclusions can be drawn from insufficient sources. Works Cited [1] Gallup, Inc. Americans Trust in Mass Media Sinks to New Low.Gallup.com. N.p., 14 Sept. 2016. Web. 05 Jan. 2017. [2] Trump would certainly implement national database for U.S. Muslims.CNN. Cable News Network, 20 Nov. 2015. Web. 06 Jan. 2017. [3] Hoft, Jim. THEY LIED! Media Edited Video to Claim Donald Trump Said to Register All Muslims (Video).TheGatewayPundit. N.p., 21 Nov. 2015. Web. 06 Jan. 2017. [4] Markel, Michael H. Practicalstrategiesfortechnicalcommunication. 1st ed. Boston: Bedford/St. Martins, 2013. Print. [5] LibGuides: Critically Analyzing Information Sources: Critical Appraisal and Analysis.CriticalAppraisaland AnalysisCriticallyAnalyzingInformationSourcesLibGuidesatCornellUniversity. N.p., 27 May 2016. Web. 05 Jan. 2017.   Ã‚  

Tuesday, August 20, 2019

Hydrostatic Pressure Vessel

Hydrostatic Pressure Vessel Nomenclature = radial stress = Hoop stress = axial stress Pi = internal pressure Po = external pressure ri = internal radius ro = external radius r = radius at point of interest (usually ri or ro) Delta L = Elongation = Deformation ID = inner dimeter of o-ring Gd = groove diameter Srec = stretch recommended Bd = Bore diameter GW = Groove width CS = cross section diameter C = recommended maximum compression (static)   Summary    A design of a thick vessel is created to measure the effects of hydrostatic pressure when operated in them. The methodology of calculating the stresses on thick walled cylinders is illustrated. A study of the radial and hoop stresses is progressed to find the required sizes of the vessel to operate without a failure under 30 MPa pressure. The bolts are designed to handle the load on the vessel to keep the vessel in one place without moving. The force in the vessel is measured to find the correct bolts that will keep the vessel fixed and safe. A sealing technology study is described to understand how to measure the correct dimension of the o-ring to process the test without air leakage from the entry of vessel. The groove in the vessel was measured to stretch the o-ring designed in a correct manner so the pressure hand move in and out sealed. The calculations in this report are tested mathematically in an academic manner for the design to be brought to life with high efficiency. Introduction In the field of science experimenting, it is necessary to test the efficiency of a specific design, because all products of same function have different specifications and differ in quality. At the same time the true specification of a design can alter its efficiency. Therefore, the best product must be created with real specific measurements that lead to its perfection. It is found that there are three important features of the pressure vessel. Firstly, the shape of the vessel which presents the equations used to study the impact of pressure in them. Secondly, the material used must be chosen correctly to prevent any danger if vessel fails. Finally, the safety is the most important feature in a pressure vessel hence it is important to choose the correct bolts that will keep the vessel fixed at a point. In addition to designing the desired sealing technology of the vessel to keep the air pressure tight in the vessel without any leakage. Companies, industries and labs usually use hydrostatic pressure on a specimen to figure out it properties which allow us to understand the standards of the material. Using hydrostatic pressure is a safe and effective process which helps us to understand more about failure of objects under pressure and the effect of hydrostatic pressure. There are a few different techniques used to measure the failure of a test, for ex ample, when a hydrostatic test is proceeding it is known that if air starts leaking from the vessel, this would be considered as a failed test. Thick walled cylinders nature is that they handle more pressure. Under high pressure, the wall might explode and cause failure thus is it important to dimension right size for the thickness of the cylinder before manufacturing the cylinder for hydrostatic testing. Measuring variables such as, hoop, radial, and axial stresses will be discussed and progressed for the vessel designed in this report. The bolts used are entitled to a high load of pressure which is possible to cause a failure if there was no study taken before using these specific bolts that have this mechanical specification. A study on the strength of the bolt is being used and will be illustrated later in the report. Basically, this report will show a study on how to design the required cylinder and bolts to process a safe hydrostatic test. As the design of the vessel will be illustrated to understand the image of the design and its dimensions. Which will lead to an understanding on how to design a specified thick cylin der to process an internal pressure and a hydraulic press to test a specimen hydrostatically. Aim of the Project The project aim to design a device to measure the effects of hydrostatic pressure on the fracture toughness of the device. It is found that the device required must handle conditions of 30 MPa pressure thus thick walled cylinder is needed. The importunacy of this project is to create a design that meets the required conditions for it to function plus applying correct methods and calculations for it to function. Hydrostatic pressure Hydrostatic pressure test is latest style of testing the ability of fracture toughness of a vessel without causing harm. Hydrostatic test of vessels requires gas or water filled into the vessel if the fracture toughness of vessel is about to crack, the resistance of air reduces the explosion as they resist the inner pressure that causes the failure. Less energy is released when fracture is about to take place LT (2016). Air is a fair medium that is used for a hydrostatic test. Air is less expensive than oil and it has an easier method than water for a test. The sample will not get harmed after the test. When a failure occurs, it means that the vessel does not meet the standard and this failure can be shown when the durability fails and air begins to leak. It is important to assure the leak prevention, reliability, and safety of the pressure test. There are two methods of testing hydrostatic and pneumatic. Air is used as a medium of the hydrostatic test Arshad Mahmud (2012). The hydrostatic test measures the elastic deformation of a metal and its ability to get back to it is formal shape. Air is a safe medium as it is can compressed like water. When a cylinder blows out, air will leak which is safer than using other material due its possibility to be highly explosive. Pressure vessel Pressure Vessel is a tank that is designed to contain gases or liquids at different pressure limits. The pressure or temperature drops can be dangerous; this can cause an explosion which can injure anyone near the vessel. Thus, when designing a pressure vessel legal commands must be taken to create a vessel that is safe to perform its task. History of pressure vessels started in 1495 when Leonardo Da Vinci designed a vessel. The major problems that occurred were mainly explosions because of leakage of compressed gas or liquid, and if a fire was burning near. Engineers created safety factors as measurements of safety of pressure vessels LT (2016). Pressure vessels are used in many applications, for example, in compressed air receivers, hot water storage tank, compression chambers, mining operations and nuclear reactor vessels. A cylinder is the usual shape that is used for hydrostatic testing. It has good maintenance because it is checked every five years for public safety. When the device gets cold when in storage, fatigue might occur hence the importance of the maintenances. However, hard steel responds to it properties to handle in high pressures. Steel also provides controlled and safe environment to prevent any explosion that is possible to harm people. Shape of the vessel Cylinders have an ideal shape because it is easy to analyze when in operation and are easily made. This makes cylindrical vessels the cheapest in cost and most effective. Even though the cylinder is the ideal shape for the vessel, it comes with a few disadvantages, for example, the bigger the diameter, the more expensive the construction of the cylinder would be. The ideal size for a cylindrical vessel is 8cm, this is to avoid inspections and testing issues RR (2012). In this case, the maximum internal pressure chosen is 30MPa which allow us to design a thick-walled cylinder. Equation, and variables of thick walled cylinder will be illustrated in this report, based on them a design of a vessel will be created for hydrostatic testing. Thick Walled Cylinders There are a lot of examples for thick cylinder such as, guns, hydrostatic testing device, and high pressure hydraulic pipes. Thick cylinders are entitled to internal and external pressure. The wall thickness is large and the stress across the thickness is notable. Stresses in this case are solved by using specific boundary conditions, compatibility, and equilibrium. The problem of thick walled cylinders is that they are entitled to high pressure and temperature which is possible at constant or changing duration. The usual problem is ductile fracture of the material which is because of the geometry or the properties of the material. The real analysis of a thick cylinder is dependent on the radial and hoop stress caused by the internal pressure which stand up to the yield strength of the material. Equilibrium equation is important because we need it to relate stresses to strains and strains to displacement d(sr) / dr + sr sh / r = 0. Compatibility equations; Thick walled cylinders have three main mechanical stresses. To design a thick, cylinder the thickness of the wall should be more than 1/10 of the greatest diameter of the cylinder: 1-Hoop Stress 2-Radial Stress 3-Axial Stress (2017) Thick walled cylinder The boundary conditions of a thick-walled cylinder are: Thin surface is, at and outer surface is, at Thus -pi = A (B / ri^2) and -po = A (B / ro^2) Variables can be seen in figure 1.1, Figure 1.1 shows location of the variables (2017) Thick walled cylinder A and B in the simultaneous equations above when applied to the boundary conditions above, two constant equations for A and B will be concluded; Now, to find the final general equation, Lames equation is included thus the hoop stress and radial stress will be; (2017) Thick walled cylinder the axial stress on the case of the cylinder designed bellow which a closed end is calculated by means of equilibrium which is reduced to as shown above. Maximum shear stress follow that stresses on the cylinder at any point on the wall are principal stresses. Thus, the maximum shear stress at any point will be given by the equation of Tresca theory, Giuseppe Catalanotti (2017) Material of the vessel Pressure vessel are mainly made from steel. Rolling or forging is used to make out the shape out of the vessel. Current standards use steel to impact resistance which increases the mechanical strength. Steel is the most important material for engineering and construction in the world. Steel has a great resistance to corrosion because of its formability and durability, high tensile and yield strength and is very effective for thermal conductivity. Stiffness, ductility and yield strength are measured using tensile stress test. Impact test used to figure out the toughness and hardness of surface resistance Total Material (2016). -Yield strength of steel is 260MPa -Young modulus is between 210 GPa (Stiffness better three times than aluminum) -density of 7.7/8.1(kg/dm3) -Poissons ratio 0.30 -Thermal conductivity 11.2/48.3(W/mK) -Thermal expansion 9/27(10-6/K) Total Material (2016). Safe tank to perform a hydrostatic test must remain sealed. Lip seal technology is used in this system. O-ring were created to prevent any leakage when hydraulic hand is inserted into the chamber. A hydrostatic test should meet these requirements of the vessel to remain testing of pressure safe. Calculations Results: First, the maximum pressure that will cause yield at the internal surface of the vessel will be calculated, using the hoop and radial stresses to find the maximum shear strength and the yield strength. The equations will be used are explained in thick-walled cylinder section which are the hoop and radial stresses. In addition to the maximum shear strength equation and yield equation which will be mentioned in the following; Giuseppe Catalanotti (2017) Secondly, the elongation equation will be used to determine the size of the deformation; Delta(L) = deformation(z) * L (L) is the height of the internal cut which has a height of 0.210m Deformation(z) v = passions ratio E = the young modulus k is the ratio of external diameter on the internal diameter ro/ri First the hoop and radial stresses must be calculated hence the hoop stress equation is pi = 30MParo = 0.210m k = 2.625ri = 0.08m hoop stress is = 145.67MPausing hoop stress equation above. pi = 30MParo = 0.210m k = 2.625ri = 0.08mk = ro / ri The radial stress is = -(108.75 MPa)but r = -piusing radial stress equation above. The yield equation is pi = 30*10^6 k = 2.625using the yield equation above. = 70.18 MPa Since the yield strength of the steel is 260Mpa and it is greater than the yield at 70.18MPa pressure then the measurements of the vessel appear to be able to handle an extra 190MPa on the system before it begins to fail. The maximum shear strength Tresca is      = Since hoop and radial stresses are found, maximum shear stress can be calculated. = 145.67MPa = 108.75MPa= 70.18MPa Giuseppe Catalanotti (2017) Now finding the Elongation which has the equation Delta(L) =* L = (1 2v) * pi / E (k^2 1) = (1 2 * 0.3) * 30*10^6 / 210*10^9 * (2.625^2 1) = 9.7*10^-6 v = passions ratio of steel pi = internal pressure E = the young modulus of steel k is the ratio of external diameter on the internal diameter ro/ri Deformation= 9.7 *10^-6m Since, Delta(L) = defamation(z) * L Then, L = Length of the cylinder which is = 0.21m. See figure (3). Elongation is 9.7 * ^-6 * 0.21 = 2.037 *10^-6m from Elongation equation above Giuseppe Catalanotti (2017) Bill of Materials (6) (4) (1) (3) (5) (2) Item Number Description quantity Material (1) Vessel 1 Steel (2) O-Ring 1 Rubber (3) M14 Bolts 6 Steel (4) M12 Bolts 4 Steel (5) Pressure hand 1 Steel (6) Holding Stick 1 Steel The Design and assembly procedure A hydrostatic pressure device was designed to measure the pressure. This tank is to be attached to the hydraulic machine. Measurement of the machine were taken to design the vessel. The purpose of this device in figure (1) is to ensure that pressure tests are maintained safely and properly. This design is measured to handle pressure between 0MPa to 70MPa. The test will be progressed at 30 MPa. The material used is steel. The design contains six different main parts as shown in figure (1). This section will provide dimension and function of each part. Figure (1) Vessel Components (Exploded View) The size and the thickness are very important factors when designing a safe vessel. Figure (2) shows the circular diameter of the head of the vessel which is 21cm and that it was extruded to 34cm. Figure (2) is also a cross sectional view of the final shape of the vessel.The thichness of the wall surrounding the chamber is 6.5cm and the bottom has a thickness of 7cm. Figure (3) shows the dimsion of the chamber which is a cylinder of 8cm diameter and length of 21cm. This area is where it is expected to place the specimen. The specimen size is measured to be 20*50*4mm Figure (2) Dimension (1)Figure (3)Chamber dimensions The mechanism that will hold the vessel is smart. Figure (4) shows a diameter of a cut of 5.1 cm and 6.5 high. This area is meant to be placed into the bottom holding hand of the hydraulic machine in the Ashby building. Where the vessel has an extrusion of 27cm and height of 5cm and was created as a base of vessel as shown in figure (5). Figure (4) Bottom hand holder Figure (5) shows the base diameter and height Figure (6) shows that the base cylinder has 6 holes of M14 size. These holes were created to be tighten up with bolts of M14 shown in figure (7) on the table of the hydraulic machine. Six bolts are created and can be seen in figure (6). Figure-(6) M14 holes x6 Specification of the Bolts (F = P x A),which means that the force is equal to the pressure multiplied by the area. Figure (3) shows the internal diameter of the vessel which is 0.08m. (a = pi x (d)^2 / 4) is used to calculate the area of a cylinder, which means that (pi x (0.08m)^2 / 4) = (50.03*10^-3 m^2). The maximum pressure will be tested is 30 MPa. Since pressure is 30MPa and area is (5.03*10^-3 mm^2). then as they multiplied to bring a force of 150 kN. This means that thetotal force in the cylinder is equal to 150 kN. The question here is that will the bolts in figure (7) and (8) M14, M12 handle 150 kN of force. The research on the metric bolts shows the ability of each size of the bolts. It was shown that M14 bolt has a load proof of 66.7 kN. Figure (6) shows that there are 6 bolts of M14 is used. Now, the total force applied is divided by the number of the bolts to show the required ability of the bolts. (150 kN / 6 = 25 kN) which means that the system requires six bolts that each of them can handle 25 kN of force Metric Bolts (2016). Above it is mentioned that the load proof of each of the M14 bolts is 66.7 kN which means that a total of six M14 bolts will provide an ability of 400 kN, 400 kN of force can handle 150 kN of applied force. In brief, the bolts used in the system in figure (11) meet the requirement of the study which is 30 MPa. To ensure the safety of fixing the vessel to the machine, four M12 bolts were added. M12 bolt figure (8) has a load proof of 48.9 kN, Total load proof of four bolts is equal to 195.6 kN which has a good impact on keeping the vessel safe from any danger of being rapidly moved away from it fixed point. Eventually, the total ability of the bolts is equal to 595.6 kN which are designed to prevent the vessel from any possible danger of a maximum pressure load of 150 kNMetric Bolts (2016). Figure (7) M14 Bolt x6 Figure (1) shows 4 holes created on top of the vessel. They are M12 holes created to increase stability of the vessel and more safety in case of the vessel left it place. Bolts of M12 were created to have a length of 39cm as shown figure (8). Calculations above are measurements of parts in figure (1) . Ten bolts, 4 of M12 and 6 of M14 are attached to the base of hydraulic machine. Finally, a hydrostatic test can be done safely.   Figure (8) Long M12 bolts x4 Sealing Technology O-ring is a mechanical gasket in a shape of loop with a diameter that is made of rubber. It is designed to be fitted at circler cut which means that an o-ring will be compressed during work. It is expected to seal a joint of two parts. One mechanical benefit of the o-rings is to seal a moving hand through a vessel without an air leakage. Thus, a specific design of an o-ring will be designed to be fitted at the entry gate of the vessel for the hand to enter the vessel without air leaking (efunda) 2017. Figure (5) shows the place of the o-ring. The thickness of the o-ring is calculated to be 0.84 mm and the inner diameter of the o-ring is measured to be 79.46 mm. The o-ring designed can be seen in figure (10). Figure (9) shows the grave and the dimension of the O-ring. An o-ring is meant to be attached in this system. The groove was measured to be 4 cm away from the top of the vessel in the chamber section. The groove diameter was calculated to be 8.1 cm and the width of the groove is 1.15 mm. As hydraulic hand enters the chamber, it will pass through three rubber bands that reduces the area of the chamber making it tighter for the hand to be inserted without any leakage outside the system PS (2016). The design of the grave and the o-ring must be studied before they are designed. To design a sealing technology there are a few variables to know to create it. These variables are the bore dimeter of the outside radius, the groove diameter of the inside radius and the groove width of the axial length. The maximum stretch of the 0-ring should not be more than 5% of the grove size (efunda) 2017. Calculations of the O-ring and Results ID is the inner diameterof the o-ring and can be found if Srec the recommended stretchischosen and the groove diameter Gd the groove diameter can also be found when this equation is used; Srec = 2% ID = Gd * (1 Srec) then, ID = Gd * (0.98). The stretch of the o-ring is to make the o-ringstay at the groove tightly without falling out (efunda). ID = (39.94 * 2) 0.42 = 79.46 mm ID = 79.46mm Gd = ID / 0.98 Gd = 79.46 / 0.98 = 81mm Gd = 81mm Cross sectional Diameter (CS) of the o-ring: O-ring will be compressed in radial direction when it is attached to the groove. As the cross section of the ring is compressed between groove and bore diameter then the cross-sectional diameter must be more the depth of the groove. Which means that CS > Gd ID / 2 (efunda) 2017. CS = Gd ID / 2 = 81mm- 79.46mm / 2 = 0.77mm As CS must be > than 0.77mm then CS = 1mm C is the recommended maximum compression is 40% and must be for the ring to be compressed. The recommendation of C depended on the seal kind. Static seals do not require an axial movement in the bore(efunda) 2017. Groove Width in the Vessel (GW) = When the ring is compressed horizontally it will expand vertically. The material of the ring will be helpful to be compressed effectively. However, the groove width should be about 1.5 by the cross sectional of the o-ring diameter and this to stretch the ring vertically (efunda) 2017. GW = CS * (1.5) = 1mm * 1.5mm = 1.5mm. Figure (9) Section Cut shows the position and size of the Groove width and diameter Figure (10) O-ring CS dimeter and radius (r) Figure (11) Final Product (Thick walled Vessel) Discussion Thick Walled cylinders handle high pressures with least effects on the vessel and remain safe for future use. The deformation possible in the vessel is calculated to find the amount of elongation (the change in formation or length in an object). The elongation value is 0.002mm which is proper. The maximum pressure in the vessel is 30MPa hence finding the hoop and radial stresses to find the shear stress of the vessel and compare it with the yield strength of the vessels material and it dimensions. Therefore, the stresses applied at different sections in the chamber are calculated above and hoop stress is found to be 145.67MPa and radial stress is 108.7MPa. The maximum shear stressin the vessel is calculated from the hoop and radialstresses and it is found to be 70.18 MPa. Based on Total Material (2016) the yield strength of steel is 260 MPa. Giuseppe Catalanotti (2017) have stated that if yield strength of material is bigger than the shear stress calculated in the vessel then the vessel is safe when pressure applied. The Bolts are designed to handle keep the vessel fixed on the ground of the hydraulic machine. The total force initiated in the vessel is calculated and found to be 150kN thus the required bolts are must have a higher force than 150kN. The six M14 bolts used can handle force of 400kN and this enough for the vessel to function safely. Finally, the sealing technology, the o- ­ring is designed to keep the vessel sealed when it is preforming. (efunda) 2017 stated that the maximum recommended stretch of an o- ­ring is 5% and the designed o- ­ring has a stretch of 2%. The groove width is 8.1cm, cal culated using 2% max. stretch and an inner diameter of 7.94cm. The CS diameter o- ­ring is 1mm, which must be higher than the calculatedCS diameter which is 0.77mm. Hence, the

Monday, August 19, 2019

Reshaping Our Conception of the Amateur Astronomer Essay -- Explorator

Reshaping Our Conception of the Amateur Astronomer Until recently, if you had asked me to describe what I would have envisioned an astronomer to look like, I probably would have given you two alternate pictures; the first would be the academic or professional astronomer-aided by grants, funding agencies, university budgets, and access to the latest technology in the field. The other astronomer, then, would be the "amateur" astronomer: the wide-eyed observer whose sole passion in life is to design, build, and use telescopes of their own creation. While I am certain that both of these stereotypes exist, I was surprised to discover that there is indeed a third type of astronomer, namely the "serious amateur." The serious amateur falls somewhere in between my two previous categories; while the professional/academic astronomer would classify an amateur as "anyone who has not earned a graduate degree in astronomy...," the serious amateur would more likely view his or her non-professional status as a result of "...not earn(ing) his or her l iving from watching the skies." [1] Nonetheless, with the aid of recent developments in astronomical technology, a serious amateur astronomer now has the ability to aid professional astronomers by observing unrecorded (or underrecorded) stellar objects. Indeed, the present comet Hale-Bopp was simultaneously discovered by both a professional and a serious amateur astronomer alike. Therefore, in this article I would like to outline some of the new technological advances and new relations between serious amateurs and professional astronomers, give some examples of the "new" astronomer, and then analyze the changing role of the astronomer--including both the roles of the professional and of the se... ...ercury, p. 38. 5. Koch, Bernd. "Amateurs and the CCD Revolution." The Mercury, p. 40. 6. Fountain, Henry. "Backyard Astronomers Enlist as Foot Soldiers of Astrophysics." The New York Times, 3/18/97, C4. Bibliography:       http://www.halebopp.com    Jevons, F. R., Science Observed. London: George Allen & Unwin Limited, 1973.    Latour, Bruno. Science in Action. Cambridge, Massachusetts: Harvard University Press, 1987.    Wilcox, Ken. "The Golden Age of Amateur Astronomy." The Mercury, volume 25, #1, Jan/Feb 1996. pp.32-35.    Bracher, Katherine. "Amateur Astronomy in America." The Mercury, volume 25, #4, Jul/Aug 1996. pp.7, 25-27.    Fountain, Henry. "Backyard Astronomers Enlist as Foot Soldiers of Astrophysics." The New York Times Tuesday, March 18, 1997 C4.    Koch, Bernd. "Amateurs and the CCD Revolution."Sky and Telescope, January 1997. pp. 38-42.

Indigenous Health Case Study Essay example -- Healthcare Culture

Introduction Health is known as a state where an individual is socially, mentally and emotionally stable without the presence of any illness, disease or infirmity (Carson, 2007). Jenny, an indigenous woman is 34 weeks pregnant, she has been complaining about her abdominal pains and after seeing the flying doctor, she was asked to fly back with him as she might be in an early labour. Jenny is concerned about her family; she wonders how they will manage without her. Her mother-in-law lives with her sister-in-law and she wonders if she will be able to come and help as her mother has a diabetic leg ulcer and needs treatment so cannot travel. This essay will discuss about the health issues before colonization and after colonization, Jenny’s situation and how she faces the culture clash and dispossession, it will also look at the models of health and theories and how that affects Jenny’s life. Culture clash and indigenous dispossession at the time of colonization. Culture clash is how people behave, whether or not people recognise each other as human beings and if they share what they believe, have similar values and beliefs (Eckermann, Dowd, Chong, Nixon, Gray, & Johnson, 2006). The process of colonization is when a nation imposes itself economically, politically and socially upon another nation (Germov, 2009). People belong to different cultures; every culture has its own customs and beliefs that everyone has to follow. Culture clash can occur when people look at different cultures as not to be a part of their culture and different people as not their people (Eckermann et al., 2006). Cultural customs and beliefs are influenced by the socio-economic status, political and natural environment (Crisp & Taylor, 2009). Modern medicati... ...udy. Rheumatology , 42 (11), 1287-1294. Crisp, J., & Taylor, C. (2009). Potter & Perry's fundamentals of nursing (3rd ed.). NSW: Elsevier. Davis, B. M. (2006). How to teach students who don't lool like you; culturally relevant teaching strategies. In Culturally relevant teaching strategies (p. p.3). London: Sage publication, LTD. Eckermann, A.-K., Dowd, T., Chong, E., Nixon, L., Gray, R., & Johnson, S. (2006). Binan Goonj: Bridging cultures in Aboriginal Health (3rd ed.). NSW: Churchill Livingstone. Germov, J. (2009). Second opinion: An introduction to health sociology (4th ed.). Victoria: Oxford university. Gustafson, D. L. (2005). Transcultural nursing theory from a critical cultural perspective. Advances in Nursing Science , 28 (1), 2-16. Keleher, H., & MacDougall, C. (2009). Understanding health;A determinants approach (2nd ed.). Sydney: Oxford university.

Sunday, August 18, 2019

Essay --

â€Å"Heroism is a matter of integrity- becoming more and more at each step ourselves.† (Joseph Campbell) The Hero’s Journey is the basic template for all great stories. It includes the start to an adventure, a mentor, initiation by trials an and challenges, victory, and return. In The Hobbit, a fantasy novel by J.R.R Tolkien, the tale depicts the quest of protagonist Bilbo Baggins, a humble hobbit who plays the role of the burglar as he must help dwarves bring back their home held captive by the dragon Smaug. As he makes the quest to the Lonely Mountain he changes, grows, and develops as the inner â€Å"Took† personality grows within himself. The major transforming events test his abilities late causing Bilbo to evoke and reveal his true heroic nature. Before Bilbo goes on the death defying journey he is introduced as a regular hobbit who is calm, and never having the thought of going on an adventure. Bilbo’s background includes his â€Å"Baggins† personality and his â€Å"Took† personality. The Bagginses side of the family is described as â€Å"very respectable, not only because they never had any adventures† (Tolkien 2). On the outside Bilbo is seen with having a Baggins personality which is as of a regular hobbit. The Tooks were however different than many hobbits and was seen by society as â€Å"not as respectable as the Bagginses, though they were undoubtedly richer†(3). Bilbo’s Took side of family was known for going on adventures and being more different than the normal hobbit. Within himself Bilbo possesses a Took personality and realizes only at the end of his journey. Though Bilbo doesn't know this within himself as he later on changes as an individual he begins to notice t he changes occurring. The call for adventure is where the init... ...uch as they use to before. However Bilbo is not bothered by the fact as he has gained more to not care about any of it. In the end he gained more experiences, friends, and tales to tell in the future about the adventures he has made. â€Å"‘My dear Bilbo!’ he said.‘Something is the matter with you! You are not the same hobbit that you were.’†(302). Bilbo has reached the point of becoming a hero as his journey comes to an end. As Bilbo finally returns to everyday life he lives as a different hobbit than before. The Hero’s Journey exhibits the transformation of the character Bilbo Baggins into a brave and confident hobbit as he face many events that exam the abilities and changes through the quest he makes. The development, growth, and changes that occur in Bilbos characteristics makes him able to handle the many challenges and temptations that he is faced with.

Saturday, August 17, 2019

Sir Gawain Essay

11-1-11 Chivalric But Still Human â€Å"The motto of chivalry is also the motto of wisdom; to serve all, but love only one. † (Honore de Balzac). The Chivalric code is a clutter of rules that contradict each other and challenge normal human behavior. These rules of chivalry are predominantly concerned with courage, honor and gentlemen- like- behavior, which play an important role in proving one’s faithfulness to the King. In the poem, Sir Gawain and the Green Knight, Sir Gawain proves to be a hero because he continually struggles against his human flaws to act in a heroic manner.Sir Gawain is acknowledged as a chivalric human because he is a courageous man who perseveres through difficult events and faces both human temptation and terror. Throughout Sir Gawain and the Green Knight, Gawain constantly battles to uphold the chivalric code, and in the end one can determine that Gawain did in fact uphold the chivalric code. To begin, Gawain upholds the law to be a courageous man in all circumstances. Near the end of the poem Gawain reaches the Green Knight’s castle to uphold his promise that they made a year and a day before.When Gawain arrives, he and the knight begin conversation and form an agreement to follow through with the terms. As the Green Knight describes what he shall do, Gawain says, â€Å"Never fear†¦ I’ll stand still and allow you to work as you like and not oppose/ you here† (91-95). At this point within the poem, Gawain has done everything to follow the code of chivalry. True bravery and courage is not found in many men, but Gawain is able to conquer this obstacle and prove that he is brave. In this instance, Gawain is allowing the knight to do as he pleases, which is to cut off his head.This demonstrates that he is a fearless man awaiting his death. Additionally, he does not choose to resist the punishment and run for his life, he takes in the punishment because he has the strength to accept his fate. Many me n in this situation could not demonstrate this action, allowing the reader to conclude that Gawain has a strong sense of bravery, which is an important and crucial characteristic needed to uphold the chivalric code. As the story progresses, so does Gawain following and upholding the Chivalric code.The code, furthermore, includes such as acts of honor and noble behavior towards women. After the Green Knight has given his punishment to Gawain, he speaks words of truth to him saying, â€Å"A man who’s true to his word should have nothing to fear† (195-196). The Knight know that Gawain did nothing wrong the first two days, because he returned what he had received. Since he did not try to take her seductive kisses to the next level while being chaste towards the mistress, shows that he respects women. Respect and love towards women is an important contribution to the chivalric code.Furthermore, the demonstration of returning what was received for the two of the days shows t hat Sir Gawain was an honorable man to his host, by staying true to his vows exchanged three days earlier. Overall, Sir Gawain is shown to maintain the chivalric code by following four critical laws within the code of chivalry, yet still struggling with his many human weaknesses throughout the course of his journey. Despite the fact that Gawain upheld most of the chivalric code, some may think that he failed to uphold the code because of human mistakes.As the story begins, the Green Knight comes inside the castle, gets his head sliced off and then is miraculously fine, and he walks out telling Sir Gawain to find him in a year and a day. This series of events exemplifies to Gawain that he, himself, is not immortal and he should fear for his own life. When Gawain finally arrives at the Knight’s castle on the dreadful day, the knight explains, â€Å" But you have lacked a little, sir; you were less that loyal;/ But since it was not the sash itself or lust/ But because you loved your life, I blame you less† (207-209).All humans have, in some way, a in fear of death. This was the feeling that overcomes Sir Gawain, causing him to keep the sash that was given to him on the third day by the mistress. This action caused Gawain to fail to uphold the chivalric code because he was disloyal to the host. No other knight would be chivalrous enough to pass up a chance to save his life; each one is human which means they ultimately fear their own death.In the end, some would consider Gawain a failure, but in logical terms it was an opportunity too difficult to pass up by any human, showing that human flaws have interfered with Gawain’s journey to uphold the chivalric code. The knight agrees with this and understands that even though Gawain should uphold the code, he has to go through some loopholes. This understanding by the Green Knight later comes about in the conversation between Sir Gawain and the Green Knight, the Knight states, â€Å"You are the fin est man that ever walked this earth†¦ so Gawain indeed stands ut above all other Knights† (204-206). Even though Gawain has showed disloyalty to the Knight, or at the time his host, the Green Knight is still able to state that he is a heroic knight. Gawain is considered one of the greatest knights, because he knows that he is only making mistakes due to human flaws in his judgments, which difficult to overcome. But the Knight knows that he has the ability to recognize his mistakes and fix them. Overall, this shows that Gawain is trusted and trusted not to repeat his mistakes, revealing him to be chivalrous by then end of the poem.In conclusion, some may think that Gawain was not able to uphold the Chivalric code, but this is a false accusation, because he struggled due to his human flaws that would be impossible to overcome for any living being. Sir Gawain is able to uphold the chivalric code by conquering difficult tasks while following the rulebook. The Chivalric Code i s a complex system that goes against many human flaws and behaviors. Gawain stays courageous, honorable and gentlemen-like through out his journey, even tough he has many battles with temptation and fear.Gawain tries with extreme patience to overcome his errors, but sometimes fails to do so, which shows that he is only human and that everyone makes mistakes but they have the ability to fix them. As Sir Gawain and The Green Knight ends, the reader concludes that even though Gawain did have some failures in meeting all of the exact laws the chivalric code, he is still able to uphold a majority the code of chivalry with prominence and pride.

Friday, August 16, 2019

How to Clean the Harman Pf100 Furnace

How to Clean the Harman PF100 Furnace Here are step-by-step instructions for cleaning your Harman PF100 Pellet Furnace. These instructions are to be used in conjunction with the owner’s manual that came with your furnace. If you have any questions about the procedure please don’t hesitate to call your local authorized dealer. In order to maintain top efficiency it is important to clean and vacuum the inside of the furnace 3 or 4 times per burn season. The furnace is designed to be very easy to clean and it should take about an hour to complete. A thorough cleaning is required at the end of each heating season.Keep in mind that cleaning both your insert and venting system is essential. It boosts heat output and keeps the furnace running at maximum efficiency. Many Harman dealers offer annual cleaning services for their customers. Please read through this entire guide before beginning. TOOLS YOU WILL NEED: Dust Mask & Safety Goggles Shop vacuum w/fine dust (HEPA) filter S tandard socket set or nut driver set Tooth brush 3† to 4† paintbrush Small putty knife Hearth glass cleaner Paper towels Rubber gloves (soot really gets into pores) Drop cloth Flashlight or drop light 4 in. lexible brush (for venting pipe) Burn pot scraper (included w/furnace) TIPS BEFORE YOU START: Be sure the furnace is completely out and cool (and unplugged from electrical power! ). The furnace must be completely out before cleaning. Every part must be cool to the touch, including the pellets that are left in the burn pot. Live pellets are a fire hazard – especially if they get sucked into a vacuum cleaner. Every year there are stories of house vacuums catching fire by inadvertently sucking up hot ashes. Worse still this can be the source of a house fire!Hot ashes should be stored in a metal container with a tight fitting lid. When the ashes are completely out they can be used as a soil conditioner for your lawn or garden. Wear a dust mask! This is important! D on’t be foolhardy when it comes to protecting your lungs. Wear a mask and protective goggles. Professional chimney sweeps wear both while performing cleaning tasks. STEP #1: PREPARE THE WORK AREA Start by placing a drop cloth on the floor in front of your furnace. Alternatively you can use newspaper. Keep your tools on the drop cloth so you can wrap them in it and take them outside for cleaning when you are done.STEP #2: CLEAN THE EXTERIOR OF THE BURN POT Open the side access door (Fig. 1) and begin by removing loose soot deposits from within the burn pot. Remove the flame guide and vacuum the ash from the burn pot and above the burn pot (Fig. 2). Fig. 2 Fig. 1 Fig. 3 Clean the burn pot using the scraper provided (Fig. 3). Use the flat end of the scraper to remove the carbon from the burn pot. Alternatively use a hammer and a straight tip screw driver to tap the deposits loose. STEP #3: CLEAN THE INTERIOR OF THE BURN POT You’ll now need to clean ash from inside the bur n pot.Remove the clean out plate under the burn pot by loosening the two wing nuts holding the plate in place (Fig. 4). You many need to use pliers to loosen the wing nuts initially. Vacuum all ash from the burn pot’s interior (Fig. 5). Fig. 6 Fig. 4 Fig. 5 Use your finger to brush out any ash that can’t be reached with the nozzle of the vacuum (Fig. 6). After cleaning, be sure the plate is fully closed before hand tightening the wing nuts. (Note: Do not tighten the wing nuts with pliers. ) STEP #4: REMOVE THE UPPER BAFFLE PLATE Remove the upper baffle plate from the firebox on the wall opposite the burn-pot.To accomplish this, lift the cover plate up about 1/2† and it can be removed for cleaning (Fig. 7). Use the pointed end of the scraper and a brush to clean the heat exchanger behind the cover, let the ashes fall into the ash pan. Clean the remainder of the inside of the burn chamber using the scraper, putty knife, brush and vacuum. Fig. 7 Second Baffle Plate: After all the scraping and brushing of ashes is complete you can remove and empty the ash pan. There is a second baffle plate located below the upper baffle plate that becomes accessible when the ash pan is removed.Tip the top of the cover forward and lift up and out of the furnace. Do a final clean-up of the baffle and vacuuming of the inside of the firebox area and the ash pan (ashes noted by lower right arrow on Fig. 7). Replace the baffle plates being sure they are securely latched into position. Also, be sure the flame guide is replaced on the burn pot. Replace the ash pan, close and latch the firebox door and outside cover door. STEP #5: REMOVE THE COMBUSTION MOTOR First, remove the combustion blower cover. The combustion blower housing is held in place with two flip latches (Fig. ). Next, remove the combustion motor by first loosening the three thumb screws (Fig. 9). You can then twist the motor assembly counter-clockwise to remove it. NOTE: The motor wires do not need to be disconnected. Fig. 8 Fig. 9 STEP #6: CLEAN THE COMBUSTION MOTOR & SURROUNDING AREA When the combustion blower is removed, the inside of the combustion blower area (Fig. 10) needs to be brushed and vacuumed. Next, the fins of the combustion blower (Fig. 11) will need detailed cleaning as they will accumulate sooty dust.Although the combustion fan is shown removed in this view for clarity (Fig. 12), you do not need to disconnect the wiring of the motor for this step. The fins of the blower need to be carefully cleaned with a toothbrush. Be extra careful not to bend the fins on the combustion blower as this may cause an imbalance or interference with the inside of the blower housing when it is reassembled. Fig. 10 Fig. 11 Fig. 12 STEP #7: CLEAN THE AUGER DRIVE BOX The next step is to clean the inside of the pellet feed mechanism and a general cleanup â€Å"under the hood† of the furnace.Start by removing the large sheet-metal cover under the pellet hopper (Fig. 13). There are f our screws holding this cover in place; two are located as seen in the image in fig. 13. The other two screws are on the other side of the furnace. You need only to loosen the screws a few turns and slide the cover off. Fig. 13 Under the cover you will find the feeder assembly; you will need to remove the wing nut in the center of the housing cover (Fig. 14) and remove the cover. After removing the cover, clean out the inside of the housing (Fig. 15) with a small brush and a vacuum.Replace the auger assembly cover and wing nut and then the outer sheet metal cover. Tighten the sheet metal cover screws snuggly and you are done cleaning the â€Å"engine housing†. Fig. 14 Fig. 15 STEP #8: CLEAN OR REPLACE THE AIR FILTER You will need to clean or replace the air filter on the filter box (Fig. 16). Follow the air filter manufacturer’s instructions for cleaning or replacement. Filters are widely available at hardware stores and home centers. Fig. 16 STEP #9: SWEEP THE ENTIRE FLUE SYSTEM It is very important that the entire flue system is inspected and cleaned once per year.In order to clean the flue system you will need to sweep it from its exit point using rods and an appropriately sized brush. You may need to take apart sections of pipe in order to do this. Note: Professional installers often design the venting system so that certain joints can be taken apart. These joints will often have either aluminum tape or silicone caulking on the outside. Use a knife to scrape off the silicone caulking on the joints you plan to take apart. If your pellet stove is installed into an existing chimney you will need to clean the chimney as well as the pellet pipe.To do this you will need the appropriate sized chimney brush and rods. (i. e. a six inch diameter chimney will need a 6† diameter brush) Once the flue system has been cleaned, reconnect and recaulk the pellet vent. High temperature RTV silicone caulking will work for this. Note: it is very important t hat each joint of the pipe within the home be airtight. Even small pinhole leaks can leak smoke! If you have any questions regarding any aspect of these cleaning instructions, please refer back to your Owner’s Manual or contact your authorized Harman dealer.

Thursday, August 15, 2019

Digital Fortress Chapter 37

Downstairs at the Alfonso XIII, Becker wandered tiredly over to the bar. A dwarf-like bartender lay a napkin in front of him. â€Å"Que bebe Usted? What are you drinking?† â€Å"Nothing, thanks,† Becker replied. â€Å"I need to know if there are any clubs in town for punk rockers?† The bartender eyed him strangely. â€Å"Clubs? For punks?† â€Å"Yeah. Is there anyplace in town where they all hangout?† â€Å"No lo se, senor. I don't now. But certainly not here!† He smiled. â€Å"How about a drink?† Becker felt like shaking the guy. Nothing was going quite the way he'd planned. â€Å"?Quiere Vd. algo?† The bartender repeated. â€Å"?FinoJerez?† Faint strains of classical music were being piped in overhead. Brandenburg Concertos, Becker thought. Number four. He and Susan had seen the Academy of St. Martin in the Fields play the Brandenburgs at the university last year. He suddenly wished she were with him now. The breeze from an overhead air-conditioning vent reminded Becker what it was like outside. He pictured himself walking the sweaty, drugged-out streets of Triana looking for some punk in a British flag T-shirt. He thought of Susan again. â€Å"Zumo de arandano,† he heard himself say. â€Å"Cranberry juice.† The bartender looked baffled. â€Å"Solo?† Cranberry juice was a popular drink in Spain, but drinking it alone was unheard of. â€Å"Si.† Becker said. â€Å"Solo.† â€Å"?Echo un poco de Smirnoff?† The bartender pressed. â€Å"A splash of vodka?† â€Å"No, gracias.† â€Å"?Gratis?† he coaxed. â€Å"On the house?† Through the pounding in his head, Becker pictured the filthy streets of Triana, the stifling heat, and the long night ahead of him. What the hell. He nodded. â€Å"Si, echame un poco de vodka.† The bartender seemed much relieved and hustled off to make the drink. Becker glanced around the ornate bar and wondered if he was dreaming. Anything would make more sense than the truth. I'm a university teacher, he thought, on a secret mission. The bartender returned with a flourish and presented Becker's beverage. â€Å"A su gusto, senor. Cranberry with a splash of vodka.† Becker thanked him. He took a sip and gagged. That's a splash?

Wednesday, August 14, 2019

From Classical Hollywood to New Hollywood Essay

The movies Rebel Without a Cause and Bonnie and Clyde offer two prime examples of the difference between â€Å"Old Hollywood† and â€Å"New Hollywood. † Rebel Without a Cause was released in 1958 and, although it pushed the envelope for movies at that time, it still was very much a depiction of â€Å"Old Hollywood. † Bonnie and Clyde released in 1967 was one of the first films of â€Å"New Hollywood† in that its style, acting and storyline moved it into a new generation of filmmaking. In this paper I will analyze these two films and contrast their different styles and also show how Bonnie and Clyde set a new standard in the filmmaking industry. I will also look at readings from class and draw from them in order to back up my discussion. Rebel Without a Cause (Old Hollywood) â€Å"If I had one day when I didn’t have to be all confused and I didn’t have to feel that I was ashamed of everything. If I felt that I belonged someplace. You know? † (Rebel Without a Cause, 1958). This quote was from the protagonist Jim Stark who is a 17 year old whose parents just moved to Los Angeles. His parent’s fight often in front of him and his mother is very domineering toward his father and Jim doesn’t like this. He feels his dad is not man enough to stand up for himself and he sees him as being week. Even though his father loves him a lot and shows him affection, Jim wishes he was more of a man. Throughout the movie he tries to tell him that he needs to just stand up for himself and set a good example for his son, but his father doesn’t get it. He’s just too used to being bullied around by his mother. Jim even goes so far as to say that he never wants to end up like his father. This was just one of the many films during the fifties that depicted the youth of America as being insubordinate and not having the same moral makeup as past generations. This film also looks at parenting styles and how they affect the youth at that time. The main character Jim continuously gets into trouble as a result of his confusion and detachment from his parents. The style in which the film was made goes right along with what was being done in that era. The acting, at times, was very over dramatic and the dialog was sparse and very â€Å"clean†. The high school kids were rebellious and got into fights, but there is very little blood and the discourse was very civil. Up until the fifties, the movie business had grown exponentially and was dominated by about eight different studios located in Los Angeles. Small budget films were being made at the time but wouldn’t make money simply because the â€Å"Giants† had all the talent and money to produce large-scale productions. At that time it was also accepted that the larger the amount of money put into a film, the more it would make. It was published to the public amounts that were invested into the films (Maltby, 113 – 125). In the postwar period, the foreign market became an even more important source of income to Hollywood. By the early 1960’s foreign sales generated about half of the majors’ revenues†¦but instead of bringing European stars to Hollywood, American production migrated abroad (Maltby, 127). So part of â€Å"New Hollywood† was it’s presence abroad and actually filming and producing films in foreign nations. However, not many were ready for the movie that, in essence, changed how filmmaking was done. Bonnie and Clyde (New Hollywood) â€Å"This here’s Miss Bonnie Parker. I’m Clyde Barrow. We rob banks. † (Bonnie and Clyde, 1967). Directly influenced by the â€Å"French New Wave† style of cinematography, Bonnie and Clyde broke all of the rules associated with â€Å"Old Hollywood†. The film portrayed sex and violence on a graphic level not really ever seen before. And, although, the movie started out as sort of a comedy, it quickly turned dark as the violence began. Many different societal taboos were broken regarding sex and violence. This new style also included a more â€Å"real† form of filming in that it was more graphic and the filming itself was more choppy. The comedic way that it depicted violence along with its quickly shifting tone toward the dark side of violence was something new at the time. Since the production of Bonnie and Clyde many others followed suit in its overt display of sex and violence in the movies. â€Å"The impression created is one of restlessness, edginess and a palpable sense of sexual hunger and longing† (King, 12). Clyde is a thief that meets up with Bonnie while he’s trying to steal her mother’s car. She falls in love with him and they go on a bank-robbing spree together. As they get better at what they do, the level of violence is escalated and the amount of gore depicted in the film rises. Sexual overtones are constant and this entire concept of glorifying sex and violence on film was brand new at the time. During the late fifties and sixties, times were tumultuous in America and Hollywood cinema reflected that. Making connections between Hollywood movies and the times in which they appear is not as straightforward a business as it might often appear. Sometimes, however, the case seems more clear-cut; the times are such that they appear to impose themselves forcefully on our consciousness, unmistakably invading the terrain of popular entertainment such as Hollywood cinema (King, 14). Because of social events and tragedies that were taking place in that era such as the Kennedy assassinations, the assassinations of Martin Luther King Jr. and Malcolm X, people were longing for films that helped express how they were feeling. Conclusion Both movies were epic pictures that were preserved in the United States Library of Congress’s National Film Registry and even though their release dates were only twelve years apart, watching them makes you feel as if they were made in completely different eras – which, in fact, they were. Rebel Without a Cause, arguably James Dean’s best film, sort of represents the innocence of America at that time. You feel as if you are watching something that would be rated G today, or would be on the Disney Channel. Bonnie and Clyde represented the direction that America was moving in. People might not have been ready for it at the time, however, they went to the theaters in drones to see it. It was the start of a brand new era in filmmaking and stands to be one of the founders, if not the founder, of New Hollywood today. Works Cited Bonnie and Clyde: Memorable Quotes. (1967). Retrieved from http://www. imdb. com/title/tt0061418/quotes King, G. (2002). New Hollywood Cinema: An Introduction. New York: I. B. Tauris & Co Ltd. Maltby, R. (1995). Hollywood Cinema. Malden, MA: Blackwell Publishing Ltd. Rebel Without a Cause: Memorable Quotes. (1955). Retrieved fromhttp://www. imdb. com/title/tt0048545/quotes