Soy Protein Substitutes in Meat Products essays

Soy Protein Substitutes in Meat Products essays For the past couple of year the number of Americans that are overweight keeps increasing. Today fifty five percent of Americans are overweight. Because of this unhealthy trent the media, researchers, doctors and specialists have been educating and informing the population that eating a healthy diet is beneficial for the body in many ways. As a result of the growing awareness of the benefits of eating a healthy diet today's consumers have become more health-conscious than ever before. When researchers and scientists talk about a healthy diet they emphasize on cutting back on a diet high in animal fat, which increases one's risk for osteoporsis according to a study done at the University of California in San Francisco (shape magazine Nov. 2001) and focusing on a plant-based diet, which has many health benefits such as reducing the risk of heart disease, protecting against breast and prostate cancer, and helps in the prevention of osteoporosis. The focus on a plant-based diet has sti mulated the interest in soy products in the United States. Dana Jacobi states that soy is a complete vegetarioan protein derived from soybeans that has been consumed by people in Asian countries for thousands of years. This protein is considered "complete" because it contains all eight amino acids (protein building blocks) that are essential (cannot be made by the human body) to maintain healthy cells in the human body. "Recently soy has been gaining recognition and popularity as the American population learns more about its potential health benefits. In Octover of 1999 the Food and Drug Administration (FDA) approved the use of the "heart healthy" claim on soy protein products." The FDA put this claim on soy because it can reduce the risk of heart disease, which is the leading cause of deaths in the United States, can help protect the immune system, ward off heart attacks, strokes, osteoporosis, diabetes, and kidney disease. Soy is also an excellent sou...

Persecution vs. Prosecution, Persecute vs. Prosecute

Persecution vs. Prosecution, Persecute vs. Prosecute Persecution vs. Prosecution, Persecute vs. Prosecute Persecution vs. Prosecution, Persecute vs. Prosecute By Maeve Maddox Both persecution and the similar word prosecution come from Latin verbs meaning â€Å"to follow.† Prosequor, which gives us prosecute and prosecution, can mean merely â€Å"to accompany,† but it can also mean â€Å"to attack.† The English word prosecution has a legal meaning: â€Å"the instituting and conducting of legal proceedings against a person or persons in respect of a criminal charge; an instance of this.† This is the usual sense in which the word is used. Latin persequor, which gives us persecute and persecution, can be translated as â€Å"to follow with hostile intent.† The English word persecution means â€Å"systematic violent oppression directed against the members of a particular religious or racial group.† In addition to religion and race, sex, gender, and other aspects of human difference can also be made the target of persecution. The usual authors of persecution are governments; their targets are complete classes of people: Rep. Keith Ellison speaks against Pakistani persecution†¦of Shia  Muslims Shrinking Numbers and Growing Persecution Threaten Sikhs and Hindus in Afghanistan Government Persecution of Christians in China Worsens Significantly Persecution of Indian Women Moral crimes being used to persecute Afghan women A Call to End the Persecution of Women Globally Homosexuals in Africa face growing persecution Persecution is a strong word that stirs emotions and calls up images of ravening lions, flaming pyres, and yellow armbands. To use the word as a mere synonym for harsh criticism, unfair treatment, harassment, dislike, or annoyance seems a waste. For example: After nearly two months’ lull, the persecution of Alex Rodriguez [baseball player] has resumed. The persecution of Tony Blair Melissa Joan Hart persecuted for support of Romney Why childless people are persecuted The Persecution of Wisconsin Conservatives Liberals Are Being Persecuted on Campus Here are some possible alternatives for use in contexts that don’t really merit persecute or persecution: harass/harassment hound/hounding badger/badgering intimidate/intimidation pester/pestering bully/bullying victimize/victimization mistreat/mistreatment Persecute vs. Prosecute Persecute and prosecute and the verb forms of persecution and prosecution. Here are some quotations from the press using those words: Pope Francis called Sunday for an end to the violence in Iraq, where religious minorities are being persecuted and driven out by the militant group the Islamic State. USA Today Florida has no law to charge children who make school shooting threats, which will make it difficult to prosecute recent arrests made after last weeks attack in Parkland. USA Today Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Misused Words category, check our popular posts, or choose a related post below:Dialogue Dos and Don'tsCapitalization Rules for Names of Historical Periods and Movements10 Terms for the Common People

Team Performance Measurement Essay Example | Topics and Well Written Essays - 500 words

Team Performance Measurement - Essay Example Even though performance evaluation can be a successful process that acts as a basis for human resource development in healthcare organizations, there is a likelihood of various challenges being encountered especially if some of the team members consider it to be a punitive undertaking by the management. In a situation whereby individual accomplishments are valued more than teamwork (Sangvai et al. 2008), the junior staff in the healthcare cadre may regard performance measurement as an undesirable process due to their minimal contributions in the hierarchical structure where physicians dominate leadership and public trust. Such attitudes of inferiority may hamper the process of performance measurement as some team members feel intimidated (Castka et al. 2004). Members of a team usually have different perceptions regarding their individual performance and that of others. Some perceive themselves as the top performers, which may present a challenge in the performance measurement process when the continuous feedback to the group reveals results that are contrary to their expectations. If such individuals are rated below their counterparts in the preliminary results, they are likely to be de-motivated and discontented, thereby lowering their performance. Enthusiasm of such team members to participate in subsequent performance measurement processes may decrease; hence delaying the evaluation exercise and the ultimate results (Schrader & Lawless, 2004). Even though a strong team is expected to pursue shared objectives, the different roles require individual performance evaluation so that the management can determine the career development needs for each employee (Sanwong, 2008). This presents a major challenge since the teams normal workflow is affected by the idiosyncratic approach that promotes individualism rather than collective accomplishment of tasks. Some of the team members are likely to develop a pessimistic attitude thereby reducing their

B202 PART B TMA Essay Example | Topics and Well Written Essays - 1500 words

B202 PART B TMA - Essay Example Higher the ratio, higher is the margin of safety for the creditors. Main ratios used in the analysis are: For looking at long term trends in performance key ratios (as above) were obtained for the years 2005 to 2008. Comparison of these ratios over these four years shows the trend for the enterprise whether it is upward, downward or stagnant. It was also thought prudent to see how the enterprise stands as compared to the industry. In view of the fact that at present the economy is going through an exceptional downturn, it was thought best to analyze the past performance by averaging the data from 2005 to 2008. The average of figures from 2005 to 2008 obtained was then taken as base to calculate the analytical ratios. These ratios were then compared with the industry ratios to highlight the areas in which Tesco’s performance is better than its competitors. Profitability- In terms of profitability Gross Profit Margin is range bound showing only a marginal decline of 0.11% over four year period from 2005 to 2008. Thus there is no significant change in terms of operating cost or sale price in the years under consideration. Net Profit Margin has shown slight improvement in the comparative analysis by half a percent i.e., 0.508. Thus even though gross profit ratio is almost stagnant there is slight upward trend in net profit, this could be due to higher turnover wherein the net profit tends to increase after reaching breakeven point for every increase in sales. The other two profitability ratios also indicate the effectiveness of management in managing the resources and they reveal a small but definite upward trend over the four years. Return on assets has grown by 0.501% from 2005 to 2008. Return on equity shows even better growth of 2.301%. Thus retained earnings seem to have yielded increased profit over the years. The Liquidity Ratios on the other

The Late 19th Century and the Drive for Empire Essay Example for Free

The Late 19th Century and the Drive for Empire Essay 1. Effects of Industrialization on†¦ the economy The industrial revolution played a role in the emergence of the basic economic patterns that have characterized much of modern European economic life. Some historians characterize the period before 1895 and after 1873 as a great depression. Europeans experienced a series of economic crises during these years (Prices of agriculture produces fell). Slumps reduced profits in the business cycle. Although recession occurred at different times from 1895 to world war 2, Europe experienced an economic boom and got a prosperity level that encouraged people to look back at the era as la belle à ©poque (the golden age in civilization ) specific countries /zones Germany: replaced Great Britain as the industrial leader of Europe. Germany gained superiority in new areas of manufacturing (organic chemicals, electronic equipment). Britain had an established industrial plant and made it more difficult to shift to the new techniques of Industrial Revolution. The relationship between science and technology became closer. Germany was accustomed to change. European economic zones: Europe was divided into two economic zones. The growth led to new patterns for European agriculture that emerged. It included an abundance of grain and lower transportation costs caused the prices of farm commodities plummeting . Southern Italy, Austria-hungary ,Spain=little industrialized the urban environment Urban dwellers make up an increasing percentage of the European Population. There were 40% in Britain, 25% in France and Germany, 10% in Eastern Europe. Then after the industrial revolution, the population increased to 80% in Britain, 45% in F, 6% in germany, and 30% in Weastern Europe. There were also many inventions and innovations that occurred in this time period -Electricity- 1910. Hydro electric power stratons-coal fired steam plants. The electric railway was in 1879. Desire to own sewing machines, clocks,  type writers, etc. New consumer ethic. Mass marketing encourtages people to purchase new consumer goods. Introduction of chemical fertilizers. Workers were of people who abandoned farms because of hardships. Wanted cheaper labor. Ideologu of domesticity: Women should remain at home to bear and nuture children. This is said to keep the well being of familyand forced women to do marginal work at home. The urban and industrial lead was passed from Britain to Germany. demographics/ population patterns Dramatic population increases after 1870. Prices of food and manufactured goods declined. There were also lower transportation costs. The period of the depression was from 1873-1895. This period was composed of a series of European economic crises. There was an abundance of grain: Tarrif barries; machines for harvesting In 1850-1910, THe population grew to 460 million. There was a rising birthrate and also a decline in deathrate Emigration: Excess rural labor migrates to industrial regions. Emigration is about 500 thousand a year. There was improved nutrition because food was transported to poor harvest regions. 2. Social Changes Due to Industrialization Work/School Play/Leisure Mass Society Upper Class This elite was composed of people with the jobs of aristocrats, bankers, merchants, and industrialists. There were elites schools dominated by the children of the aristocracy. The educated elite got leadership roles in government and military. There were pleasures of country living and the aristocrats bought lavish town houses for part-time urban life. Common bonds were made when the sons of wealth families met during school or other meetings. The aristocrats and the plutocrats fused together to one class. The mass education was a product of mass society. To be educated, one had to attend a secondary school or university. European states showed little interest in primary education. Only in the German states was there a  state-run system for it. Europeans made a commitment to mass education becase they believed education was imprtant to social improvement and thought to supplant catholic education with moral training on secular values. Mass Leisure: The new industrial system where evening hours after work, weekends, and later a week or two in the summer. Leisure was the opposite of work; What people did in their free time or for fun Mass tourism: Creation of the first market for tourism. Its wages increased and workers were given paid vacations. One result of mass education was an increase in literacy. With the dramatic increase in literacy, there was also a rise of mass-circulation newspapers. Mass politics became a reality in western European states. Reforms encouraged the expansion of political democracy through voting rights for men. Middle Class This class was a level that included jobs such as professionals in law, medicine, and the civil service as well as moderately well-to-do industrialists and merchants. After the industrial expansion, new groups of jobs were added such as managers, new professionals, engineers, architects, accountants, and chemists. The lower middle class jobs consisted of shopkeepers, traders, manufacturers, and prosperous peasants provided The moderately prosperous and successful middle class shared similar lifestyles and values than the others that dominated 19th century society. The middle class members were active in preaching their world view to children and other society classes. They believed in working hard and christian morality. They had a right way of doing things and propriety. This also gave rise to more books. Lower Class The majority of the lwoerclass were landholding peasants, agricultural laborers, or sharecroppers. There were some prosperous landowning peasants that shared the same values as low middle class. The lower class consisted of the urban working class: Artisans, printing, jewlry making, and semiskilled laborers who included: Carpenters, bricklayers, and MANY factory workers The lower class of urban workers experienced a real betterment in the material conditions of their lives after 1871. Urban improvements meant better living conditions. There was also a rise in wages, then a decline in  consumer costs. This made it possible for workers to buy more than just the necessity food and housing. Workers were now permitted to buy more clothes and leisure that strikes and labor agitation were winning shorter workdays and Days off. Women’s Roles The second industrial revolution brought and enourmous impact on the position of women in the labor market. There was controversy of women for their right to work. The desperate need for money forced women to do marginal work. This work was done at home because it required little skill. A women was expected to nurture and care for children while ensuring the moral/physical well being of the family. Many lower class women were forced to be prostitutes. There were as many as 60k prostitutes in London. Many new job opportunities for women. 3. New Inventions invention its effects and applications Chemicals Electricity The internal Combustion Engine Tarrifs and Cartels A change in the method of making soda enabled France and Germany to take the lead in producing the alkalies used in the textile, soap, and paper industries. Laboratories overtook British in the development of new chemical compounds Electricity was a major new form of energy that provided great value since it was easily converted into other energy forms such as heat, light, and motion. The first generators were developed in 1881 The development of the combustion engine was made in 1878. This ran on gas and air. It was unsuitable for widespread use as a source of power until the development of liquid fuels- petroleum and its distilled derivatives. An oil  fired engine was made in 1897. The hamburg Amerika Line had switched from coal to oil on its new ocean liners. There was increased competition for free trade. protective tariffs guaranteed domestic markets for the products of their own industries. AFter a decade, Europeans returned to protective tarif protections. Cartels were being formed to decrease competition internally/ A cartel is where enterprises worked together to control prices and fix production quotas, restraining the kind of competition that led to reduced prices.

Robert Bolts A Man For All Seasons Essay -- Robert Bolt Man Seasons E

Robert Bolt's "A Man For All Seasons" In the play, written by Robert Bolt, 'A man for all seasons' the Common Man is a very important character and also a very important part of the play, not in the plot but in the way the play has been presented, he is both a narrator and a role player who makes the play more interesting and separates it from reality. The Common Man also introduces some of the ideas from Bertolt Brecht's work. The idea of the Common Man is a rare and rather unusual one. Robert Bolt used him intentionally to be like no other character in his play. One of the distinctive functions of the Common Man is obvious from his name. The word, 'common' meaning, 'common to us all.' Everybody in the audience should be able to relate to him. The Common Man plays a very plain and simple man and he sustains this through all his roles, especially the Boatman, who when asked to describe the life of a boatman says, 'its common.' We see the boatman as a typical hard working man as he talks about the strains of his job, 'from Richmond to Chelsea, downstream, from Chelsea to Richmond, upstream..' Yet this character is still able to make a joke about his wife to show that he is not bitter. The boatman is also the first to introduce the motif of the river, water imagery in the play. This involves the members of the play using the characteristics of water and portraying them into their own lives, an example being society figures as dry land. Throughout all the roles played by the Common Man, including the Steward, Boatman, Publican, Jailer, Foreman of the jury and a Headsman, he will always express a similar attitude, the attitude of the 'plain and simple man,' as the jailer says. The speech used amongst ... ... shows self-preservation at one point and a way in which he is not so simple and ordinary, when he declines the bribe, where as a simple man might have just taken the money, The Common Man understands the wrong and refuses the money. During his role as the Foreman of the Jury, The Common Man seems to bring all the roles together I think a quote that very well sums up the Common Man is when the jailer says, 'Better alive and no conscience, than dead with morals.' But I think the Common Man's most major function in the play is his part as narrator, if it wasn't for the Common Man the story would be told alone just by the characters, this could mean the story might be harder to understand as it goes along. Furthermore the story would be less interesting as well as harder to grasp. The Common Man is a very important part of the play 'A man for all seasons.'

Natural Selection Lab

Natural Selection Lab This hands-on laboratory exercise is a highly simplified model that attempts to simulate evolution by means of natural selection. Predators will act as agents of selection on their prey, a species whose members vary in color. We will assume that color is an inherited trait. Small squares of paper will represent the prey, which will be spread out of a piece of printed colored fabric that will serve as the habitat. The predators (you) will prey upon the population, with the surviving members reproducing and passing along the genes for color. Problem:How does a population change as a result of natural selection? Materials: * 5 different colors of paper cut into 1 cm ? 1 cm squares (at least 100 squares of each color) * Multicolored fabric or newspaper, approximately 1 meter ? 1 meter * 1 or 2 partners (friends or family) Procedure: * The prey will be represented by the small 1 cm ? 1 cm squares of paper and the habitat is represented by the 1 meter ? 1 meter piece of fabric. Hypothesize which color prey you think is most likely to be captured by the predator and which color prey is most likely to survive, and then record your hypothesis.Be sure that your hypothesis includes explanations for your predictions. * Have the two partners (prey) stand with their backs to the habitat while you scatter 20 squares of each color randomly on the fabric. Try to achieve a uniform distribution, and be sure to separate any that are clumped together. * Have the partner(s) randomly pick up the prey as fast as they can. Have them stop when they have collected a total of 75 prey, leaving the other 25 remaining in the habitat. * Count the number of survivors of each color. Each surviving prey has three offspring of the same color, bringing the total population back up to 100.Record the number of each color in the next generation in your data table. * Count out the correct number of each colored prey and scatter them on the fabric. Repeat the process two more time s, for a total of three generations. Hypothesis: I think the black color pieces are most likely to be captured because they are so easy to be identified. I think the blue color would most likely survive because of its color shade. Data and Observations: Color| 1. Blue| 2. Yellow| 3. Red| 4. Green| 5. Black| Generation 0| 20| 20| 20| 20| 20| Generation 1| 4| 1| 5| 10| 5|Generation 2| 6| 3| 2| 11| 3| Generation 3| 3| 2| 4| 15| 1| Record any observations. Data Analysis: Conclusion: * The surviving amount of prey population was drastically different from the original. There was much less of each color in the end. Over half of each color prey I gone. * When my two partners had their backs turned and I was scattering around the color pieces, once I told them that it was okay to turn around and pick them up, I saw that they tended to pick up the brightest colors. So, in conclusion, the brighter the prey the more the predators attract to them and hunt them. The green pieces of paper barely even got touched, but the yellow seemed to stand out the most. * If I were to continue, the yellow would have been extinct in like Generation 4. But, the prey as a whole would have been very scarce within two generations. The green would be the last to go. * Whatever the brightest color was would have died off first. * 1) You can’t re-collect the same prey once it’s been picked off 2) There might not be 25 surviving prey all the time. There could be more or less. 1) A large number of predators can really decrease population in a species dramatically. ) It’s a prime example of survival of the fittest because there will be animals trying to eat other animals. * If the predator knew the habitats of his prey. Then, he could bring back some more predators and they could take out a whole area of prey. * Camouflage can really help you survive in times of need. Let’s say there is a predator behind you and it is ready to eat you. If you know the perfect places to hide then you are safe. Especially if the hiding spot matches with your body color. The predator probably won’t recognize you.

Kirk Arnold

Kirk Arnold effectiveness as a manger and leader comes from the character and her management style. More than the skills or previous experience she has with other companies, her work ethics, manner and her interactions with other people in the company establishes confidence and admiration. This suggests that though she is goal-oriented person, she also recognizes the importance of building relationship and work partnerships within and outside the organization What could she do better? Considering the developing challenges in the industry Nerve Wire ranging from the slowing down of the economy and the intensification of competition, relationships with clients and other industry partners can be further developed. Arnold has already apparently recognized this need and has incorporated it significantly in her priorities and schedule. What aspect of her management style do you think contribute to her effectiveness or ineffectiveness? One key aspect that has contributed to the success of Arnold’s management in the company is her work ethics which are recognized by both her peers and subordinates as exemplary. She has established a reputation for directness, objectiveness as well as a willingness to work: suggesting that she doesn’t consider her position as a privilege but as a craft. Is her style well-suited to the current situation at NerveWire? In what other situations might it be effective? In what situations would it be ineffective? Her style of management, direct but responsive, suits the nature of NerveWire’s business. Since the company is consulting and systems development, there is a need to recognize particular requirements and unique business perspectives of clients. Unlike consultancy for operational or repetitive business concerns that would not creative thinking as much, Arnold thrives in NerveWire’s environment because it allows her to apply her experience and skills, as she designs it, in innovative settings. In what way is your own style like Kirk? In what way is your style different? Like Arnold, I recognize a challenge in trying to view problems in a new way and developing new perspectives and strategies for problems. Also, that though there are technical or operational requirements that need to be taken into consideration they should not be viewed as limitations. Unlike Arnold however, there is still a lot to be developed in my mentoring or coaching skills. Most likely, this aptitude can be further developed as I gain more experience and work with more people. Malcolm Frank. In what way is Malcolm effective? Malcolm Frank effectivity comes from the fact that he is capable as an executive as well as managing other executives. In his interview, he points out that the challenge of working with brilliant people is how to be able to channels their skills and experience productively and how to manage and resolve conflicts What could he do better? He can be more directly involved in building relationships with the various stakeholders of the company to be able to asses their perceptions on the directions of the industry and in general, the economy. This will allow him the context needed to examine scenarios that the company will face. Similar to Arnold, he has also recognized the need to build these relationships personally as reflected in his own priorities and schedule. What aspect of his management style do you think contribute to his effectiveness or ineffectiveness? The most critical to Frank’s effectiveness is his confidence in the organization and its executives without being threatened or having reservation in directing them to the company’s objectives. In doing so, he is able to develop an atmosphere that maximizes the skills and potentials of the organization, highlighting the importance cooperation and organizational development and effectiveness. Is his style well-suited to the current situation at NerveWire? In what other situations might it be effective? In what situations would it be ineffective? Frank is suited to Nerve Wire because he is able to exert his authority positively. However, this success is because Frank manages and organization that has positive sense of competition and strong organizational relationship. For NerveWire and similar organizations where there is high level of pressure and a significant collection of assertive and creative people, this is an essential skill to maintain the cohesiveness and cooperation of a group. In what way is your own style like Malcolm and in what way is your style different? Like Frank, I recognize and appreciate the need for expertise, knowledge and experience as well as an environment were can they can developed positively. In doing so, people will be able to work effectively with each other and increase the overall potential and capacity of an organization. . At the same time, I recognize that this degree of confidence in my work and managing the work of others has to still be honed by experience and training. Â  

Manhattan Conspiracy essays

Manhattan Conspiracy essays Thesis: The research for the first Atomic bomb was done in the United States, by a group of the best scientists; this research was given the name of The Manhattan Project. On Monday July 16th, 1945, a countdown for the detonation of the first atomic bomb took place near Los Alamos, New Mexico. This atomic bomb testing would forever change the meaning of war. As the atomic bomb was detonated it sent shock-waves all over the world. There was endless research done on the bomb in the United States. The research was called The Manhattan Engineer District Project but it was more commonly known as "The Manhattan Project."1 The Manhattan Project was brought by fear of Germany and it's atomic research. On account of the fear of Germany the United States took action upon testing their own atomic bomb. Once the bomb was tested, the United States had to decide whether it should be used and if so, where? Then there was the process of dropping the bomb. The Manhattan Project was overall one of t he highest and most significant projects ever done in the United States.2 The United States government was shocked by the news of German scientists discovering nuclear fission. The news came to the United States from Albert Einstein. Einstein found out the nuclear fission information from a German physicist named Leo Szilard. He then told it to President Franklin D. Roosevelt and urged him to start an investment toward atomic research. 3The research would then help construct an atomic weapon of mass destruction. Roosevelt was not especially concerned about investing in atomic weapon research because he didn't plan on getting involved in the War. When Pearl Harbor was attacked by the Japanese, Roosevelt entered the war and sent significant funds to the construction of the atomic weapon. Roosevelt speeded up the process of research by having General Groves setup a committee of the brightest minds from all around the world. Because most...

Antonie van Leeuwenhoek, Father of Microbiology

Antonie van Leeuwenhoek, Father of Microbiology Anton van Leeuwenhoek (October 24, 1632–August 30, 1723) invented the first practical microscopes and used them to become the first person to see and describe bacteria, among other microscopic discoveries.  Indeed, van Leeuwenhoeks work effectively refuted the doctrine of spontaneous generation, the theory that living organisms could spontaneously emerge from nonliving matter. His studies also led to the development of the sciences of bacteriology and protozoology. Fast Facts: Anton van Leeuwenhoek Known For:  Improvements to the microscope, discovery of bacteria, discovery of sperm, descriptions of all manner of microscopic cell structures (plant and animal), yeasts, molds, and moreAlso Known As: Antonie Van Leeuwenhoek, Antony Van LeeuwenhoekBorn:  Oct. 24, 1632 in Delft, HollandDied:  Aug. 30, 1723 in in Delft, HollandEducation:  Only basic educationPublished Works:  Arcana naturÅ“ detecta, 1695, a collection of his letters sent to the Royal Society of London, translated into Latin for the scientific communityAwards:  Member of the Royal Society of LondonSpouse(s): Barbara de Mey (m.1654–1666),  Cornelia Swalmius (m. 1671–1694)Children: MariaNotable Quote:  My work...was not pursued in order to gain the praise I now enjoy, but chiefly from a craving after knowledge. Early Life   Leeuwenhoek was born in Holland on October 24, 1632, and as a teenager he became an apprentice at a linen drapers shop. Although it doesnt seem a likely start to a life of science, from here Leeuwenhoek was set on a path to inventing his microscope. At the shop,  magnifying glasses were used to count the threads and inspect the quality of cloth. He was inspired and taught himself new methods for grinding and polishing tiny lenses of great curvature, which gave magnifications up to 275x (275 times the subjects original size), the finest known at that time. Contemporaneous Microscopes People had been using magnifying lenses since the 12th century and convex and concave lenses for vision correction since the 1200s and 1300s. In 1590, Dutch lens grinders Hans and Zacharias Janssen constructed a microscope with two lenses in a tube; though it may not have been the first microscope, it was a very early model. Also credited with the invention of the microscope about the same time was Hans Lippershey, the inventor of the telescope. Their work led to others research and development on telescopes and the modern compound microscope, such as Galileo Galilei, Italian astronomer, physicist, and engineer whose invention was the first given the name microscope. The compound microscopes of Leeuwenhoeks time had issues with blurry figures and distortions and could magnify only up to 30 or 40 times. Leeuwenhoek Microscope Leeuwenhoeks work on his tiny lenses led to the building of his microscopes, considered the first practical ones. They bore little resemblance to todays microscopes, however; they were more like very high-powered magnifying glasses and used only one lens instead of two. Other scientists didnt adopt Leeuwenhoeks versions of microscopes because of the difficulty in learning to use them.  They were small (about 2 inches long) and were used by holding ones eye close to the tiny lens and looking at a sample suspended on a pin. Leeuwenhoek Discoveries With these microscopes, though, he made the microbiological discoveries for which he is famous. Leeuwenhoek was the first to see and describe bacteria (1674), yeast plants, the teeming life in a drop of water (such as algae), and the circulation of blood corpuscles in capillaries. The word bacteria didnt exist yet, so he called these microscopic living organisms animalcules. During his long life, he used his lenses to make pioneer studies on an extraordinary variety of things- living and nonliving- and reported his findings in more than 100 letters to the Royal Society of England and the French Academy. Leeuwenhoeks first report to the Royal Society in 1673 described bee mouthparts, a louse, and a fungus. He studied the structure of plant cells and crystals, and the structure of human cells such as blood, muscle, skin, teeth, and hair. He even scraped the plaque from between his teeth to observe the bacteria there, which, Leeuwenhoek discovered, died after drinking coffee. He was the first to describe sperm and postulated that conception occurred when a sperm joined with an ovum, though his thought was that the ovum just served to feed the sperm. At the time, there were various theories of how babies formed, so Leeuwenhoeks studies of sperm and ovum of various species caused an uproar in the scientific community. It would be around 200 years before scientists would agree on the process. Leeuwenhoeks View on His Work Like his contemporary  Robert Hooke, Leeuwenhoek made some of the most important discoveries of early microscopy. In one letter from 1716, he wrote, My work, which Ive done for a long time, was not pursued in order to gain the praise I now enjoy, but chiefly from a craving after knowledge, which I notice resides in me more than in most other men. And therewithal, whenever I found out anything remarkable, I have thought it my duty to put down my discovery on paper, so that all ingenious people might be informed thereof. He did not editorialize on meanings of his observations and acknowledged he was not a scientist but merely an observer. Leeuwenhoek was not an artist either, but he worked with one on the drawings he submitted in his letters. Death Van Leeuwenhoek also contributed to science in one other way. In the final year of his life, he described the disease that took his life. Van Leeuwenhoek suffered from uncontrollable contractions of the diaphram, a condition now known as Van Leeuwenhoek disease. He died of the disease, also called diaphragmatic flutter, on August 30, 1723, in Delft. He is buried at the Oude Kerk (Old Church) in Delft. Legacy Some of Leeuwenhoeks discoveries could be verified at the time by other scientists, but some discoveries could not because his lenses were so superior to others microscopes and equipment. Some people had to come to him to see his work in person. Just 11 of Leeuwenhoeks 500 microscopes exist today. His instruments were made of gold and silver, and most were sold by his family after he died in 1723. Other scientists did not use his microscopes, as they were difficult to learn to use. Some improvements to the device occurred in the 1730s, but big improvements that led to todays compound microscopes didnt happen until the middle of the 19th century. Sources â€Å"Antonie Van Leeuwenhoek.†Ã‚  Famous Biologists Antonie Van Leeuwenhoek Comments, famousbiologists.org.Cobb, M. An Amazing 10 Years: The Discovery of Egg and Sperm in the 17th Century. Reproduction in Domestic Animals 47 (Suppl. 4; 2012), 2–6, Faculty of Life Sciences, University of Manchester, Manchester, UK.Lane, Nick. The Unseen World: Reflections on Leeuwenhoek (1677) ‘Concerning Little Animals.’  Philosophical Transactions of the Royal Society of London Series B, Biological Sciences 370 (1666) (April 19, 2015): 20140344.Samardhi, Himabindu Radford, Dorothy M. Fong, Kwun. (2010). Leeuwenhoeks disease: Diaphragmatic flutter in a cardiac patient. Cardiology in the Young. Cardiology in the Young. 20. 334 - 336.Van Leeuwenhoek, Anton. Letter of June 12, 1716, to the Royal Society, quoted by the University of California Museum of Paleontology, Berkeley.Vision Engineering. Later Developments.

In what ways can 'childhood' and 'youth' be understood as social Essay

In what ways can 'childhood' and 'youth' be understood as social constructions - Essay Example The objective of this essay is to identify the different ways childhood and youth is because of social construction. The essay will mainly use Kehily’s book understanding youths. Kehily is one of the most popular sociologists in the world today. She has researched on many issues relating to childhood, youths, gender and sexuality. In the book Understanding Youths, she has used history and sociocultural approaches to prove that childhood is a social construction. The use of history and sociocultural approaches is important in her book since in part one, she talks about perspective. She has used past researches by other sociologists in trying to show the changes that childhood has undergone based on the time period, culture and the economic activities during the time stated. She has used Aries findings that in the 15th century, children even at the age of 5 years were free to do anything that the adults were doing (Classen, 2005, p. 171). This changed in the 16th century, where children were for economic purposes since they could work to boost the family’s income. During the industrial revolution, childhood changed since the law against child labor was introduced thus children suffered from separation with their parents. In 1950, childhood took another twist and it was the beginning of children being very dependent on their parents (Veerman, 1992, p. 58). The second part of Kehily’s book is self-identity; she has based her argument on the historical findings that childhood is different due to the social status (Kehily, 2007, p. 19). She claims that in the West; whose occupants were wealthy spoilt their children, this is different with the Western region where childhood had no meaning since their parents were poor thus they had to work. The third part of the book covers the activities and that the youths engage in thus gaining experience. She states that