physic Essays - Elementary Particles, Particle Physics, Dark Matter

Physics covers a wide range of phenomena, from elementary particles (such as quarks, neutrinos and electrons) to the largest superclusters of galaxies. Included in these phenomena are the most basic objects from which all other things are composed, and therefore physics is sometimes called the "fundamental science".[8] Physics aims to describe the various phenomenon that occur in nature in terms of simpler phenomena. Thus, physics aims to both connect the things observable to humans to root causes, and then to try to connect these causes together. For example, the ancient Chinese observed that certain rocks (lodestone) were attracted to one another by some invisible force. This effect was later called magnetism, and was first rigorously studied in the 17th century. A little earlier than the Chinese, the ancient Greeks knew of other objects such as amber, that when rubbed with fur would cause a similar invisible attraction between the two. This was also first studied rigorously in the 17th century, and came to be called electricity. Thus, physics had come to understand two observations of nature in terms of some root cause (electricity and magnetism). However, further work in the 19th century revealed that these two forces were just two different aspects of one force ? electromagnetism. This process of "unifying" forces continues today, and electromagnetism and the weak nuclear force are now considered to be two aspects of the electroweak interaction. Physics hopes to find an ultimate reason (Theory of Everything) for why natur e is as it is (see section Current research below for more information).

Stoichiometry and the Chemical Equation essays

Stoichiometry and the Chemical Equation essays The purpose of the laboratory is use our knowledge of stoichiometry in a hands-on experience. Stoichiometry refers to the calculations of the different quantities of the reactants and products of chemical reactions. In our experiment, we will use Stoichiometry to figure out the chemical equation of the reaction between hydrogen peroxide and bleach. For the experiment, a setup was made as follows: For each trial, the same amount of bleach was used: 4.0 mL. A specific amount of hydrogen peroxide was used, with each progressing trial using one more gram than the previous. After creating the setup shown above, the flask was stirred, causing the vial containing hydrogen peroxide to spill into the bleach. The reaction released oxygen gas that filled up in the 100 mL graduated cylinder. After the reaction finished, we observed the volume of the oxygen gas. With that data, we graphed the volume of oxygen gas produced versus the mass of the hydrogen peroxide used. Also, we will figure out the density of bleach by doing four trials of massing .500 mL of bleach. Set A Actual Mass of H2O2 Used (g) mL O2 Produced (mL) Note: for all trials, a volume of 4.0 mL of bleach was used. Mass of .500 mL of Bleach (g) Density of Bleach Solutions (g/mL) Average Density of Bleach = (.956 + .912 + .936 + .970) 4 = .944 g/mL From analysis of the graph, the equivalence point is (4.0 mL Bleach, 3.496 g H2O2) (From the Lab Manual) Bleach is 5.25% (w/w) NaOCl (From the Lab Manual) Hydrogen Peroxide is 3.00% (w/w) H2O2 4 mL Bleach x (.944 g Bleach mL Bleach) x (5.25 g NaOCl 100 g Bleach) x (1 mol NaOCl 74.44 g NaOCl) = 2.66 e-3 mol NaOCl (3.00 g H2O2 100. Solution) x (3.496 g Solution) x (1 ...

Marsh's Metals Case Study Example | Topics and Well Written Essays - 1000 words

Marsh's Metals - Case Study Example By choosing this alternative, the company can maximize their possible profit to about $51,250,000 (or more) as against selecting the alternative to sell the rhenium to Fleishman and making a possible profit of $45,000,000 (or more). Marsh’s Metals, a privately held metals broker in Prescott Florida, has acquired 10,000 kilograms1 of partially refined rhenium ore (Re) from the Niger government for $8,000 per kilogram. Bob Marsh, the owner of Marsh’s Metals, estimates that he would be able to sell all the ore for $12,000 or more per kilogram. Bruce Fleishman Jr., president of the Fleishman Refining Company based in Walla Walla (WA), who is an old friend with whom Bob Marsh has done business in the past, has contacted him about purchasing 5,000 kilograms of rhenium ore for his specialty metals company. Bruce has offered a $1,000 premium per kilogram over the normal $12,000 Bob is asking for the ore. At about the same time Huffman Smelter and Minerals from San Antonio TX called to order 4,500 kilograms of the rhenium ore for their immediate needs and are willing to pay $14,500 per kilogram for the ore. He is leaning on selling to Fleishman because he is a repeat customer at a 70% probability, but could be convinced to sell to Huffman if the monetary figures work out. Bob has two alternatives, sell the 5,000 kilograms rhenium to Fleishman or 4,500 kilograms to Huffman, and then later sell the remaining ore on the open market. Bob wants to maximize his profit by choosing an alternative. A Precision tree is constructed for the given scenario using two possible alternatives, sell the rhenium to Fleishman or to Huffman, and sell the remaining ore on the open market. The branch with the maximum Expected Monetary Value (EMV) will determine the possible alternative. Marsh’s Metals has two alternatives, sell to Fleishman or to Huffman. This

Art and design Essay Example | Topics and Well Written Essays - 1250 words

Art and design - Essay Example The Harlem renaissance art borrowed heavily from post impressionism. The African American community came to understand that it was their time to flourish as human beings. This is usually referred to as the period of enlightenment for the African American artists and the people. This essay seeks to discuss the Harlem renaissance basing on the two prominent figures, Richmond Barthe and Aaron Douglas. It compares and contrasts their early life, their education and their contribution in the Harlem renaissance. Richmond Barthe was born in bay St Louis, Mississippi. This was on January 28, 1901. His father was sr. Richmond Barthe and his mother Marie clementine Robateau. His mother sewed to support the family and his father died when he was only a year old. His mother later remarried to Barthe’s godfather, William franklin. William had no stable job and he worked odd jobs to sustain the family. This included being the icemen to the local community. Interestingly, Barthe’s interest in art developed at a very tender age. Barthe himself mentions that his mother would keep him calm through giving him a piece of paper to draw on. This would allow the mother enough time to run the house errands (Schulman & Peter, 2009 p123). At the age of six years, Barthe began to paint after the master the mum sewed for gave him a set of water colors. At this age, Barthe could draw well. When Barthe was a teenager, his art was overdeveloped for his age. Most of his paintings captured his father’s ice customers and his mother’s sewing customers. Luckily as he helped his father in delivering ice during the summer, one of the customers noticed the hardship and helped him get a job in New Orleans (Black, 2009 p234). This family encouraged his art and as he worked as a houseboy, Barthe furthered his talent in art. It was around this time that Barthe met Lyle Saxon. This was a writer for the New

Week one questions Essay Example | Topics and Well Written Essays - 750 words

Week one questions - Essay Example â€Å"Though Nokia invested a large amount on its new version called "Nokia Lumia 920", it did not meet the expectations of Nokia’s customers†(Giri, 2012). Nokia promised much and delivered less whereas its competitors like Samsung and Apple promised less and delivered more. Apple is using its own iOS operating system in iPhones whereas Samsung is using Google’s Android OS in its smartphones. Even though Windows is the leading OS in the computer world, it is not so in the mobile phone world. Moreover, the features and designs of Lumia are comparatively inferior to that of iPhone or Galaxy S3. All these factors contributed heavily to Lumia’s failure in the market despite the fact that smartphone market is growing rapidly. Google trends and marketresearch.com are the two websites I would like to use for market research. Present trends in the market with respect to any product are displayed in Google trends. It provides graphical illustrations also about the present trends in the market. Market research.com is another website which helps entrepreneurs to check the current trends in the market. It provides market intelligence required to make sound business decisions. I would like to search these websites to know the demand and supply of the product or service which I am going to offer to the consumers. Moreover, I will look for the competition and price factors also. Market research is a costly act. It is often done with the help of primary as well as secondary research. Modern technologies like computers and internet helps even small scale industries to conduct effective and less costly market research. Survey and focus groups are the two cheapest options available for small scale industries to learn the market trends. Surveys are primary market research method aimed to collect primary data from specific group of people or consumers. It can be administered easily with the help of email or

Leadership Competencies: Garbage Can Model

Leadership Competencies: Garbage Can Model There are two major decision making models. The garbage can decision making model is reality based, and intended to extend the understanding of organizational decision making by accentuating a time-based context (the situation at one point in time) and accepting chaos as reality. This is typical decision making in the emergency room of a hospital; the expertise of the medical team is vital. Rational (willful choice) decision-making models are a subset of reality-based models (Ledlow Coppola, 2011). In an emergency room situation, willful choice principles are mentally checked off by physicians at roughly the speed of light. Choice is guided by four basic principles: (1) unambiguous (knowing which questions are relevant) awareness of another possibility; (2) likelihood and knowledge of significances; (3) a rational and reliable priority system for alternate ordering; and (4) heuristics or decision rules to choose an alternative (Ledlow Coppola, 2011). After a decision is made using the garbage can decision method, rational choices are made regarding implementation. The garbage can model is quite different from traditional decision-making models. It assumes that organizations are a long way from flawless and work in a condition of insurgency (without guidelines), where hierarchical inclinations and procedures are indistinct to the individuals from the association and policy makers in the association change frequently. The garbage can model assumes that no authoritative procedure for finding an answer for an issue exists and that decision makers are separated from issues and arrangements (Bugajenko, 2003). Both willful choice and garbage can decision models are utilized in health organizations. The willful choice, or rational, model accepts that individuals in associations settle on choices considering reason, in a purposeful way, through an insightful and deliberate procedure that results in an ideal choice. It involves six sequential steps: 1. Identify the problem. 2. Collect data. 3. List all possible solutions. 4. Test possible solutions. 5. Select the best course of action. 6. Implement the solution based on the decision made (Ledlow Coppola, 2011). The garbage can, or reality-based, hypothesis accept that decisions are made on a messy and indiscriminate premise, like satisficing or wading through. In health care associations members in the decision-making process regularly have clashing viewpoints of the issue, have restricted time and assets to gather information, and are obliged to consider every conceivable solution by regulatory compliance requirements. In addition, time and money limits make it irrational to test all conceivable arrangements (Problem Solving and Decision Making in Health Organizations, n.d.) Use of both decision-making tools is vital in such instances as mental health, providing a greater range of important input in treatment decision making (Strauss, Lawless, Sells, 2009). Overall, it is shown that in the medical industry, both willful choice and garbage can decision making models are instrumental in the successful delivery of healthcare. References: Bugajenko, O. (2003). The garbage can model of decision making. Retrieved January 31, 2017, from http://study.com/academy/lesson/the-garbage-can-model-of-decision-making.html Ledlow, G. R., Coppola, M. N. (2011). Leadership for Health Professionals: Theory, Skills and Applications (14th ed.). Retrieved from https://bookshelf.vitalsource.com/#/books/9781449626440/cfi/6/4!/4/2/14/8/26/[emailprotected]:0 Maister, D. (2001). Davidmaister.Com > garbage can decision making. Retrieved February 3, 2017, from David Maister Professional Business Professional Life, http://davidmaister.com/articles/garbage-can-decision-making/ Problem Solving and Decision Making in Health Organizations. Retrieved February 3, 2017, from Frates Health Care, file:///G:/HSM410/07ch_frates_health_care_1.pdf Strauss, J., Lawless, M. S., Sells, D. (2009). Becoming expert and understanding mental illness. Psychiatry, 72(3), 211-21. doi:https://search.proquest.com/docview/220676554?accountid=41759

Spoilage Rates

India Agriculture Spoilage Data Per 2010  FAO  world agriculture statistics, India is the world's largest producer of many fresh  fruits  and vegetables,  milk, major  spices, select fresh meats, select fibrous crops such as  jute, several staples such as  millets  and  castor oil  seed. India is the second largest producer of  wheat  and  rice, the world's major  food staples. India is also the world's second or third largest producer of several  dry fruits, agriculture-based  textile  raw materials,  roots  and  tuber  crops,  pulses, farmed  fish,  eggs,  coconut,  sugarcane  and numerous  vegetables.India ranked within the world's five largest producers of over 80% of agricultural produce items, including many  cash crops  such as  coffeeand  cotton, in 2010. India is also one of the world's five largest producers of livestock and poultry meat, with one of the fastest growth rates, as of 2011. India exported about 2 billion kilograms each of wheat and rice in 2011 to Africa, Nepal, Bangladesh and other regions of the world. Aquaculture and catch fishery  is amongst the fastest growing industries in India.Between 1990 and 2010, Indian fish capture harvest doubled, while aquaculture harvest tripled. In 2008, India was the world's sixth largest producer of marine and freshwater capture fisheries, and the second largest aquaculture farmed fish producer. India exported 600,000 metric tonnes of fish products to nearly half of all the world's countries. Lack of cold storage and harvest spoilage causing over 30% of farmer's produce going to waste, India lacks cold storage, food packaging as well as safe and efficient rural transport system.This causes one of the world's highest food spoilage rates, particularly during Indian monsoons and other adverse weather conditions. Food travels to the Indian consumer through a slow and inefficient chain of traders. Indian consumers buy agricultural produce in suburban markets known as ‘sabzi mandi' such as one shown or from roadside vendors. As per the report by Shri M. S. Swaminathan (Planning Commission 1981), up to 40% of certain fruits and vegetables go waste due to their perishable nature and non-availability of appropriate post harvest infrastructure. As per nother study (TIFAC – 1996), wastage in certain food is as high as over 30% and in vegetables the losses are up to 20% to 30% at the post harvest stages due to poor storage, transportation, lack of infrastructure and the inadequacy of the marketing set-up. As per this report, India wastes more fruits and vegetables than are consumed in a country like U. K. The total wastage in all food sectors is high and worth Rs. 500,000 million. It is also estimated that the wastage cost of fruits and vegetables is Rs. 350,000 millions per year which is four to five times than those of food grains.Even in food grains the loss is reckoned at 5-10% on account of insect infestatio n and inadequate storage. Types of Food Spoilage Food spoilage and contamination are defined as those adverse changes in quality caused by the action of specific conditions or agents that induce physical and chemical changes and also includes micro-organisms, insect, bird and rodent pests. Mechanical damage is also instrumental in spoilage. Bruises and wounds are such defects, which frequently cause chemical and microbial spoilage.The primary causes of food spoilage include the following: †¢ Biological – these include micro-organisms like bacteria, yeasts and molds, and other agents like insects, rodents and birds †¢ Chemical – these include enzymatic or non-enzymatic reactions †¢ Physical – these include breakage, bruises, crushing and cut or otherwise dismembered surfaces Figure 2 depicts the â€Å"Food Pipeline† and summarises the physical and biological ways of occurrence of food loss. Meat and Poultry Processing The production of meat is steadily increasing with an annual production of 4. million tonnes, which is contributed mainly by pigs followed by sheep, goat, buffalo and poultry meat. Meat producing industry in India is largely confined to the unorganised sector and there is very limited upgradation of technology. The constraints are absence of farms for rearing meat producing animals and absence of cold-chain facilities. The market for scientifically and hygienically produced meat products is expected to grow rapidly due to constantly developing urbanisation. As a result of changing lifestyles, the21 demand for ready–to–cook food is growing rapidly.Overall very little of meat production is scientifically produced, processed and packaged as branded products. Most meat consumed in India is in fresh form. Less than 1% of meat is processed into value-added products like sausages, ham, bacon, luncheon meat, kababs meat balls etc. Figure 6 gives the production of meat and meat products. Lack of cold chain demand makes the cold chain infra costly (more demand – more competition – lesser price), the additional cost (in comparison with non cool chain products) eventually gets loaded on the products serviced through high cost cold chain.Now, if supposedly some inferior product is available at a lesser price, very few in India shall buy a superior product serviced through cold chain, particularly when product in question is considered â€Å"fresh† only when it comes outside the controlled atmosphere (read cold store). Remember – fresh peas here sells @ Rs 150 a kg during off seasons against frozen at Rs 50 Kg. You need to have customers. Therefore, I am of the view that future demand for cold chain in India shall be driven not by fresh foods but by foods and pharmaceutical categories which compulsorily requires cold chain.Ready to eat frozen products, frozen vegetables, imported fruit etc comes to mind here. If these categories grow in India – inf ra to handle this shall automatically grow. Increased growth of cold chain shall drive down the cold chain price for more adopters to follow, reducing the cost. I can foresee a strong correlation between cold chain growth with growth of microwave ovens. At the end of the day it is all about markets. It is not only the demand of right products that hinders the growth of cold store industry in India, services too share equal blameFew years back we built a world class cold storage infra for potatoes and apples at the only clock auction market for fruit and vegetables in India. This cold stores had all the modern bells and whistles like pallets, forklift, screw compressors et al. Know what happened. Third party apple storage for trading at this store turned out to be a non-starter as apple trading in India is based on samples for small lots which could not be drawn out for inspection by traders as quickly as they are drawn out in an ambient environment or a traditional cold store.Moral of the story. Trade’s service demand dictate the cold storage needs. FTA agreements July 23, 2012 –  The Honourable Ed Fast, Minister of International Trade and Minister for the Asia-Pacific Gateway, today met with representatives of the Canada-India Business Council in Montreal, where he highlighted the launch of a fifth round of negotiations toward a Canada-India trade agreement.A Canada-India joint study concluded that a trade agreement between the two countries could boost Canada’s economy by at least $6  billion. Reference: http://www. thestar. com/news/world/article/1176287–india-s-wheat-left-to-rot-due-to-lack-of-storage http://anilchopra. com/blog/personal/why-cold-storage-industry-is-not-growing-in-india/ http://smallb. in/sites/default/files/knowledge_base/best_practices/RoleofplasticsinconservationofFoodResources. pdf