Tuesday, December 31, 2019
What Is the Sun Made Of Table of Element Composition
You may know the Sun consists mainly of hydrogen and helium. Have you ever wondered what about the other elements in the Sun? About 67 chemical elements have been detected in the sun. Im sure youre not surprised that hydrogen is the most abundant element, accounting for over 90% of the atoms and over 70% of solar mass. The next most abundant element is helium, which accounts for almost just under 9% of the atoms and about 27% of the mass. There are only trace amounts of other elements, including oxygen, carbon, nitrogen, silicon, magnesium, neon, iron, and sulfur. These trace elements make up less than 0.1 percent of the mass of the Sun. Solar Structure and Composition The Sun is constantly fusing hydrogen into helium, but dont expect the ratio of hydrogen to helium to change anytime soon. The Sun is 4.5 billion years old and has converted about half of the hydrogen in its core into helium. It still has about 5 billion years before the hydrogen runs out. Meanwhile, elements heavier than helium form in the Suns core. They form in the convection zone, which is the outermost layer of the solar interior. Temperatures in this region are cool enough that the atoms have enough energy to hold their electrons. This makes the convection zone darker or more opaque, trapping heat and causing the plasma appear to boil from convection. The motion carries heat to the bottom layer of the solar atmosphere, the photosphere. Energy in the photosphere is released as light, which travels through the solar atmosphere (the chromosphere and corona) and passes into space. Light reaches the Earth about 8 minutes after it leaves the Sun. Elemental Composition of the Sun Here is a table listing the Suns elemental composition, which we know from analysis of its spectral signature. Although the spectrum we can analyze comes from the solar photosphere and chromosphere, scientists believe it is representative of the whole Sun, except for the solar core. Element % of total atoms % of total mass Hydrogen 91.2 71.0 Helium 8.7 27.1 Oxygen 0.078 0.97 Carbon 0.043 0.40 Nitrogen 0.0088 0.096 Silicon 0.0045 0.099 Magnesium 0.0038 0.076 Neon 0.0035 0.058 Iron 0.030 0.014 Sulfur 0.015 0.040 Source: NASA - Goddard Space Flight Center If you consult other sources, youll see the percentage values vary by up to 2% for hydrogen and helium. We cant visit the Sun to sample it directly, and even if we could, scientists would still need to estimate the concentration of elements in other portions of the star. These values are estimates based on the relative intensity of spectral lines.
Monday, December 23, 2019
Fast Food Addiction Essay - 1457 Words
In looking below the surface of America’s love affair with fast foods, research finds some revealing manifestations that are propelling increasing obesity rates and are thus pushing us toward a growing health epidemic. The increasingly busy lifestyles of our society along with our overreliance on processed and pre-packaged foods are driving the multi-billion dollar food industry today. The food industries strategy to optimize profits through mass produced and processed foods is creating physically addictive products similar to tobacco, alcohol and illegal drugs with equally predictable consequences. These products need to be more clearly understood, identified and labeled for their potentially destructive nature to consumers.†¦show more content†¦This paper seeks to put information in the readers hand to help make that determination and to better understand if the problem is significantly driven by the dramatic increase, and availability, of highly processed ingredie nts specifically used within the fast food delivery system. In order to reach a valid assessment of this situation, this paper will examine how highly processed foods are created and what evidence exists toward making the case for related food addiction and associated health consequences. The focus will then turn toward understanding the nature and psychology of addiction and how this correlates to food consumption, obesity and how this compares to other common addictions in society today. After the technical and psychological foundations are established, the research will turn toward understanding the statistical data associated with fast food; it will also reveal if there is compelling evidence supporting the growing obesity epidemic and fast food consumption. Finally, if a determination for food addiction, driven by processed foods, is validated, this paper will suggest a strategy to acknowledge the issue and propose first steps toward better protecting consumers. The term or idea of processing food is nothing new after all, we processShow MoreRelatedEssay on Fast Food Addiction667 Words  | 3 Pagesï » ¿Fast Food is Our New Addiction Obesity is increasing rapidly because of the fast food. Showing and telling people how unhealthy to eat the fast food is extremely hard because it is now the popular culture for the societies those are dominated by the fast food industries. 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You want the best fuel for the car, but does fast food provide the right fuel for your body? The fast food industry gives that option to people, giving regular gas when gas-guzzler’s require premium fuel. The main reason fast food should be foods to avoid is an obvious one: it can leadRead More Were All Dying for a Big Mac Essay1699 Words  | 7 Pages and youve got an hour to eat. No problem; theres a McDonalds a mere five minutes from the office. You could go there-its hot, its fast, and its convenient. Besides, they supposedly have healthy foods like chicken and fish on the menu. Approximately 45.8 million people are served at fast food restaurants every day in America, and why not? Fast foods are pre-prepared meals that are served quickly at several restaurants strategically located throughout nearly every American city. But thereRead MoreAdvantages And Disadvantages Of Fast Food1327 Words  | 6 Pages The prevalence of fast food is growing at a rapid pace in more and more countries around the world. The advantages of fast food such as cost, taste, convenience, and fast service makes eating fast food a convenient and cheap source of food for busy individuals. While fast food has its advantages it also has its disadvantages such as high in fat/calories, weight gain, and serious health risks. In this paper, I will discuss the disadvantages of fast food and why they outweigh the advantages whileRead MoreThe Epidemic Of The United States1668 Words  | 7 Pagesjunk food companies, this outbreak continues to claim thousands of lives each year. In our country today, this epidemic trails tobacco use in the second leading cause of preventable death. Many researchers have studied this horrible plague, and the only cure is the motivation to live a healthier lifestyle. Although the profits from major junk-food companies contribute significantly to America s economy, the nation is blind to the detriment of junk food to their bodies: therefore, junk food shouldRead MoreEssay on The American Fast Food Industry1420 Words  | 6 Pages The fast food industry in America has many drawbacks at the cost of supplying food to the American population. Since many people are ignorant of the process their food goes through in order to become the edible meal they consume, American companies easily take advantage of them. In class, we discussed a â€Å"Food Bill of Rights†. I believe that this is necessary in order to keep the food industry safe for the American public and environment. The main focus of my â€Å"Food Bill of Rights†is to ensure
Sunday, December 15, 2019
MIS Coursework Free Essays
Answer 12: The intelligent techniques are the various ways into which the humans would devise an electronic device to perform what they do with their intelligence and manual energy. The various intelligent techniques would make sure that all the various collaborations among the machines are invested into various kinds of expertise which are required for making it replace human efficiency for productive use of time and effort. The behavioral attitude and the exposure which is required for fetching the right kind of mannerism and exact pattern matching on the part of the electronic devices for making them to perform in line with the humans. We will write a custom essay sample on MIS Coursework or any similar topic only for you Order Now The intelligent devices are of great interest to the businesses for knowledge management as they are required to manage the data which is very crucial for making the gross transition towards the management of knowledge and its successful retrieval. The organizational attitude towards various forms of knowledge must be understood and dealt accordingly with respect to demand. The priority of knowledge derivation and data warehousing would make sure that all the various forms of knowledge would be handled and managed for its being when a lot of evaluative and intelligent analysis is required for the job. Various patterns of knowledge are crucial to businesses to predict future actions and make help them in decision making in businesses. The various forms of decision making require valid data and information to derive at business solutions. The various differences between human intelligence are as follows: Human beings think and behave rationally while AI imitates the actions and behavior of human beings and their thinking and reasoning process. Human intelligence makes the computers intelligent and automates the activities like decision making, problem solving, learning and reasoning process so that still it can remain within human control. Answer 13: Expert systems are a branch of computer science, which deals with the study and creation of computer system that exhibits some form of intelligence. AI is the process of making machine intelligent, so that it can perform well and efficiently in absence of human beings. It is system that performs either of the following: i.     Learns new concepts and tasks. ii.     Reason and draw conclusion. iii.     Able to explain iv.     Process natural language. It is the process of developing computer programs to solve out complex problems by application of processes analogous to the human reasoning process. It is a system that thinks and behaves rationally like human. This definition has got two major parts: Computer solution for major problems is one where regular software exists Process, which is analogous to the human reasoning process, is the distinguishing feature of AI programs. Characteristics of AI programs: i.     AI programs manipulate symbolic information to a large extent in contrast to the conventional program. ii.     AI program has combinatorial explosion of solution. iii.     AI programs deal with real life problems to a large extent. iv.     A vital characteristic of AI program is that it is easy to learn. Intelligence requires knowledge and knowledge should have some desirable properties. AI technique is a method that exploits the knowledge that should be represented in such a way that 1.     Knowledge captures generalization i.e. it is necessary to group the objects together, which share important and common properties. ii.           It can be understood by people, who must provide it. iii.           It can easily be modified to correct errors and reflect changes in the world and in the world’s view. iv.           It should have a wide application and implementation area, even though it is incomplete and inaccurate. v.           It should be used to overcome narrow range of possibilities. Advantage: Generalized and self-explanatory like search strategies for knowledge representation. Disadvantage: Voluminous, hard to characterize and constantly changing. Three important AI techniques: i.           Search: It provides a framework in which any available direct technique can be embedded. It provides a problem solving method for which no more direct approach is available. ii.           Use of knowledge: Provides a way of solving complex problem, by exploiting the structure of objects involved. iii.           Abstraction: Provides a way of separating out important features and variations from unimportant ones. Expert systems help in knowledge management as the ability to learn from the environment and make decisions would contribute to the very catering of knowledge and its usage. The expert systems utilize knowledge and skills to a very large extent and make enough judgment for making a right mark. How to cite MIS Coursework, Essay examples
Saturday, December 7, 2019
A Critical Self Reflection on Scholarly Writing
Question: What is scholarly writing? Answer: Scholarly wring or academic writing is the writing style used in academic fields. Many national universities have made scholarly writing compulsory, failing to which becomes a mistake. As stated by Baldi, Sorcinelli and Yun, (2013), children are often asked to follow a particular pattern in the academic writing style to avoid or reduce mistakes. In case, when a particular style is not followed, it becomes unfamiliar and intimidating and it becomes tough to differentiate among the competitors. It has been opined by Matsuda and Silva, (2014), that being aware of what actually has to be done, kills the extra effort that one might put in the task. This makes them confined within a particular sphere and their talent or intelligence is hindered. It has been pointed out by McDougall, Ornelles and Rao, (2015) that by the time kids turn into adults they lost the ability to think of something creative and innovative. Thus, a born artist is killed in lieu of educating him or her. It can be said that educating people is more important than binding them to a particular frame. Every subject is not mathematics. Several approaches have been made in this respect, however, more effort are to be given. Reference list: Baldi, B., Sorcinelli, M. D., Yun, J. H. (2013). the scholarly Writing continuuM.Working with Faculty Writers, 38. Matsuda, P. K., Silva, T. (Eds.). (2014).Second language writing research: Perspectives on the process of knowledge construction. Routledge. McDougall, D., Ornelles, C., Rao, K. (2015). A primer on the pathway to scholarly writing: helping nascent writers to unlearn conditioned habits.College Student Journal,49(2), 262-270.
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