Microscopes and Electron Micro essays

Microscopes and Electron Micro essays There are many different types of microscopes and each of them works in different ways and are used to magnify different things. Some examples of these are light microscopes, transmission electron microscopes and scanning electron microscopes. Light microscopes, also known as a compound microscope, are the most simple. The condenser focuses light rays, which normally come from a lamp pointed at the mirror. It focuses light onto the object to be viewed. Light travels through the specimen and up to two lenses, one of which forms the image while the other greatly magnifies it so that we are able to see the detail in the specimen. An important part of how the microscope works is the fact that light travels through the specimen. For this to take place, the material must be cut very thinly. The material is then stained so that the different parts of the material are visible. A dye such as methylene blue is used because this dyes the material without killing it. Other dyes require the material to be killed first. An electron microscope is different to a light microscope. They have played an important part in our knowledge of the cell ultra structure. It shows us the fine details of the cell organelle. Electrons are used to make a magnified image of the cell. Electrons have a much shorter wavelength than light and so therefore it has a great resolving power. Instead of a lamp that was used with a light microscope to generate light an electron gun is used, which are then focused on electromagnets. Areas that are densely filled with electrons produce dark areas so we can clearly see the shape of the cells. The high-density electron beam can destroy parts of the tissue causing lighter parts on the image we see. The image produced is then seen on a screen or photographic plate. The photos of specimens produced are called electonmicrographs. Electron microscopes cannot be used to lo ...

Obesity evolved from a private matter to a political issue Essay

Obesity evolved from a private matter to a political issue - Essay Example Also, obesity has been associated with low self-esteem levels, and higher levels of anxiety, depression, and measures associated with impaired quality of life. The debate as to whether the obesity problem is personal or environmental or both will continue as long as the public attention lasts, and the prospect of public policy depends on continuation of publicity of the problem. The complex nature of attribution of responsibility has made it difficult for policy makers to assign blame or develop remedial policies. Even though pressure for action has been growing, the interaction of such factors has made it difficult to predict the future course of policy related to obesity. Policies to address issues surrounding obesity have all failed to pass Congress. Definition of the problem, response from Congress, administrative agencies, courts, and cultural consequences of policy debate is a familiar route for obesity as observed in tobacco and patient’s rights measure. Among all industrial countries, the United States has the highest occurrence of overweight condition, and obesity has become a pandemic problem with over half the population being obese. Diets, eating behaviour and lack of activity have been attributed for the rise of obesity. There has been little examination of the contribution of public policies in agriculture and economics resulting in the current agricultural and food environment. Obesity has been accelerating in the recent decades, suggesting that environmental conditions could be contributing factors in addition to individual eating behaviours and evolving lifestyles (Tillotson, 2004). A study has been conducted to review and understand the relevant history of the issue surrounding the emergence of obesity from a private matter to a political issue. The study has been conducted by review of relevant literature on the matter. The study serves to identify the direction of the issue based on the prevailing debate. Industrialization

Select writter Assignment Example | Topics and Well Written Essays - 1000 words

Select writter - Assignment Example This paper is narrowing the hospitality industry to discuss the hotel industry alone (hostels, hotels and resorts). In addition, this paper will discuss whether the hotel industry is perfectly competitive or not. The hotel industry is very competitive with lots of giant hotel companies in the market (Enz, 65). These hotels and resorts have huge finances thus give each other high and on toes competition. Huge finances ensures the hotels offer the best packages, best food variety and standards, best facilities with additionalinfrastructures like gyms, spas, Jacuzzi, internet, cableTV, Wi-Fi , salons and barber shops and many more . This industry no few firms can claim dominance because they are each giants in their own ways.Althoughin 2014, a list of the best hotels in the world included a few like the Hilton hotels, Fairmonthotels, the Four Season hotels, intercontinental hotels and the Grand Regency. A typical hotel business includes a building with a part set for the restaurant where clients can eat and drink. It may also contain a small side bar where smokers and alcoholic drinks are served where only adults are allowed entry. A typical hotel can also have rooms where clients can book to spend the nights. Other facilities like a telephone booth and ATM machines can be included. The management includes a manager, supervisors, waiters, cooks and cleaners(Barrows, Clayton & Thomas, 109). Also a person handling finances may be included. The hotel market is open to all thus serves a large number of consumer. In fact hotels are the most used services after transport and fashion because people have to eat daily and event take place daily. This is because due to the harsh competition every hotel has to package its services at a cost friendly price in order of the target market. This means everybody has his or her standard where they can find cost and quality attractive at the same time. According toHarris et al, hotels make an average of 4410 pounds

Self Introduction Essay Example for Free

Self Introduction Essay Goodmorning maam, classmates, and friends. Today, i would like to impart some facts about me. Most of you here dont know me yet so first of all, i would like to introduce myself. I am Jenifer Aya-ay. I was born on the 26th of September, 1993. I am 19 years old to be exact. I am taking up BS Tourism Major in Ecotourism and this is my third-year of studying in this university. I came from the Province of Misamis Occidental particularly in the city of Oroquieta. My campus address is in Ashreen Cottage Dimalna II, MSU-Marawi City. Normally, I am a loud type of person most especially when i am with my friends. So dont be surprised whenever i get noisy at times. I guess i have gotten this kind of attitude from my family because most of them are also talented of being a conversationalist. Id love to meet new people and socializing with them. In short, I could be everybodys friend. My favorite pastime is sleeping. I just love to sleep and i dont know why. Next is that I spend much time in surfing the internet particularly the social networking sites such as facebook and twitter. I also have interest in singing and dancing. Way back elementary and high school years, I used to join dance troupes and singing competitions but unfortunately, it was not practiced anymore when i entered college. As for now, I would like to share to you a more personal stuff. Everyone, I already have a baby. As for anyone who got pregnant for an early age, you will have mixed and strange emotions on how to deal with such difficult situation. But suddenly, i realized that Ive got nowhere to go and so I took the guts to tell the situation to my parents besides, no one else could help me get through this except them. By then, we had some mellow-dramatic moments you could never imagine. After I confessed everthing, it was when i can say that im truly blessed for having an open-minded, considerate and understanding parents eventhough i have disappointed them a lot. So much for that, i want to show you the most beautiful reward i got out from that experience. This is my precious little baby. I gave birth to her on the 25th day of January this year. As you can see, shes an innocent, delicate thing and indeed, a gorgeous daughter just like her mother. I am proud to say that this experience was the moment i did something that took a lot of courage and a milestone that seemed so bad but turned out to be good.

Bacterial Resistance Essay -- essays research papers

Bacterial Resistance   Ã‚  Ã‚  Ã‚  Ã‚  Bacterial resistance is a problem that has profoundly impacted the medical community. Bacterial resistance results when bacteria become resistant to individual antibiotics through the development of specific defense mechanisms which render the antibiotic ineffective. This problem has become evident in recent years as numerous cases have been reported in which antibiotics are not effective against the bacteria that they have fought off for years. The recent troubles with bacterial resistance have caused panic throughout the United States. The pharmaceutical industry hasn’t been producing many antibiotics because they thought that the antibiotics they had created had solved many of the problems resulting from bacterial infections. An increasing amount of attention has been given to antibiotic resistance with each passing year and experts are optimistic for the future; however, the threat of bacterial resistance exists today and is a major cause for concern.   Ã‚  Ã‚  Ã‚  Ã‚  The discovery of penicillin the 1940s proved to be the dawn of the antibiotic era. In less than two decades, major advancements had been made in the development of antibiotics. There were so many different antibiotics developed that doctors and scientists focused their attention on other problems plaguing the nation. Doctors prescribed antibiotics frequently, often when they were not even needed. According to a 1998 report by the Institute of...

Whole Foods Market Business Analysis

Sales have doubled since then and 66% of the British adults now consume organic food and drinks. Their weakness Is the fact they haven't expanded Into the global market except for Canada and the ASK. There has also been several recalls on brands purchased by the company. The opportunities appear to be significant In this retail market. There Is an Increasing desire for organic, healthy products which bodes well for the success of opening new stores. The threat is competition as the demand grows and more stringent regulation. Rental increases is also a concern.In making a decision on whether to invest in Whole Foods Market, the welfare and needs of the internal and external stakeholders need to be considered. Growth depends on Bonds and Stockholders. The company must show consistent growth in order to be able to have available borrowing outlets. The employees are instrumental in keeping the customer feel wanted and satisfied with their shopping. The surrounding community wants to feel compatible with Whole Foods facilities, products and service. And the distributors supplying the company's product need to know there Is a commitment from their customers.Whole Foods Market is a unique, organic food and natural product supermarket chain located in the US, Canada and ASK. As a wholly owned subsidiary, they are headquartered in Austin, Texas and employ approximately 64,200 people: 13,300 are part-time and 2,700 temporary employees (Denominator, 2012, p. 4). They have an increase in revenue in 2011 from the previous year of 12. 2%, an increase of 25% in operating profit and net profit increase of 42%. (â€Å"Event Brief of IQ , 2012 Whole Foods Market Earnings†, 2012).These figures are significant in recognizing the company's success in recovering from the recession which hit them In 2008. Presently, the organic food market Is fragmented with many small mom and pops which presents many opportunities for growth by Whole Foods. Fred Meyer, a discount chain, carri es an Increasing array of organic foods, but not the quality and quantity of their high end competitor. The company's strength is in its focused growth plan. â€Å"The new store openings has enabled it to grow at a compounded and annual growth rate of 26% during 1991-2011†. Denominator, 2012, p. 6). They have formalized their square footage for new and renovated stores by past analysis of their successes and allures. The expansion into the I-J market, in particular the 2007 acquisition of 80,000 square feet in London could be a major step into a market outside of the US. Sales have doubled and 66% of the British public consumes organic food and drink. (Live Business News, 2012, p. 3) Their weaknesses lay in lack of expansion into international operations, product recall of certain brands, and increasing rental costs.Recalls are an issue. They have had to withdraw Whole Foods Market Dairy Free bakery products because it contained milk which was not on the label. Texas had to c all cheddar cheese products because of an e-coli contamination and there was a possible Salmonella contamination for the Whole Foods, Carob Energy Nuggets in 2009. They have not been able to successfully expand into markets other than a few stores in Canada and the I-J. They have not been able to obtain competitive prices from their distributors for these stores because of the low volume.Whole Foods also has a weak advertising budget and relies heavily on Internet and word of mouth, a disadvantage when their competitors advertising strategies are expanded into other markets. (Live Business News, 2012, p. 7) Leases for space and equipment have increased significantly from 4. 8 million in 2004 to 201 million in 2007. Future growth could be impacted. The increasing demand for organic foods and the new emerging life styles of the American public appear as great opportunities for Whole Foods Market. â€Å"According to industry estimates, the sales of organic food increased three fold si nce 2000 to exceed $28. Billion in 2010† (Denominator, 2012 p. 7) With this increase in sales, the company is still the only chain catering and available to this market. They are continually expanding their product base to include such foods for customers with facial dietary needs. The trend of the American family is moving towards eating at home and eating healthy. Competition in the food retailing market is intense. Currently, Whole Foods does not experience significant competition in the organic food, natural products, and vitamin supplement area. But, as the demand and desire grow, so will the competition.

The Arguement for Gods Existance in Hume’s essay, Why...

Why does God let people suffer analysis? In David Hume’s essay, Why Does God Let People Suffer, he allows the reader to question if God exists in the world we live in with all the pain and suffering that goes on. Hume suggests that an all powerful God, such as the one most believe in, would not allow a world to exist with this much pain and suffering that goes on daily. Moreover, Hume basically argues that the existence of God is something that cannot be proven in the way in which scientists look for and gather proof about other scientific issues. In the following essay, I will demonstrate how David Hume feels that there is a God despite all the suffering and pain that exists in our world. â€Å"Is the World, considered in general, and as it†¦show more content†¦This has to do with faith. Faith means believing in the existence of something without having any physical proof. Therefore, it could very well be a test of faith put into place by an all powerful and all knowing being to have people toy with the no tion of its’ existence. As a result, Hume’s idea that we would be able to understand God’s plan is flawed. While we all can suggest that God would like for us to behave in a way conducive to showing we have love for all other human beings simply because this would allow for a peaceful universe, one can’t assume that this is God’s plan. Moreover, one definitely can’t assume that this enables us to understand God’s purpose for the world. Additionally, one can’t automatically assume that because our world is filled with various evils, an all powerful God does not exist. In fact, one could argue the exact opposite. Simply because our world is filled with evil acts and people committing these acts, there must be an all powerful God that exists in order to reward all those that manage to resist engaging in evil acts. Hume argues that we can’t infer that an all powerful being exists because of the tremendous amounts of evil tha t go on in our world. However, this could be an all powerful God’s way to get rid of all those he feels is not worthy of achieving eternal life in his heavenly kingdom. Therefore, this world could merely be a testing stage for humans to prove they