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experiments on antibiotic effectiveness
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Antibiotics have played a major role in our society thanks to Sir
Alexander Fleming's careful observations in 1928. Without it, many lives
would be in danger due to infectious diseases.
Antibiotics are chemical substances produced by various species of
microorganisms and other living systems that are capable in small
concentrations of inhibiting the growth of or killing bacteria and other
microorganisms. These organisms can be bacteria, viruses, fungi, or
animals called protozoa. A particular group of these agents is made up of
drugs called antibiotics, from the Greek word anti ("against") and bios
("life"). Some antibiotics are produced from living organisms such as
bacteria, fungi, and molds. Others are wholly or in part synthetic - that
is, produced artificially.
Penicillin is perhaps the best known antibiotic. Its discovery and
later development is among mankind's greatest achievements. Antibiotics
have enabled the medical profession to treat effectively many infectious
diseases, including some that were once life-threatening.
How Antibiotics Work ?
Antibiotics can be bacteriostatic (bacteria stopped from multiplying)
or bactericidal (bacteria killed). To perform either of these functions,
antibiotics must be brought into contact with the bacteria.
It is believed that antibiotics interfere with the surface of bacteria
cells, causing a change in their ability to reproduce. Testing the action
of an antibiotic in the laboratory shows how much exposure to the drug is
necessary to halt reproduction or to kill the bacteria. Although a large
amount of an antibiotic taken at one time might kill the bacteria causing
an illness, such a dose usually would make the per...
... middle of paper ...
...ry studies, however, are reporting
success in the development of safer antiviral drugs, and their use should
be possible within the near future.
Works Cited:
1. Pharmaceutical Preparations, Except Biologicals, 1978, Current
Industrial Reports, Series MA28(78)-1, U.S. Department of Commerce,
Bureau of the Census, Washington, D.C.
2. Synthetic Organic Chemicals, United States Production and
Sales of Medicinal Chemicals, U.S. Tariff Commission (1972-73)
United States International Trade Commission (1974-75), U.S.
Government Printing Office, Washington, D.C.
3. L.S. Goodman and A. Gilman, The Pharmacological Basis of
Therapeutics, 5th ed., Macmillan Publishing Co., New York,
1975.
When most American people think of Germany, they think of sports cars made for the autobahn, sauerkraut, Adolf Hitler, and the Holocaust. Compared to Germany, when most American people think of Japan they think of sushi, Godzilla movies, Japan’s attack on Pearl Harbor, and the atomic bombings of Hiroshima and Nagasaki. World War II was such a significant event in history that almost 70 years after it came to an end, today’s younger generations often associate former Axis controlled countries with the war. People around the world are filled with disgust and immense hate when they hear the name Hitler, mainly because of his leadership under the Holocaust; which was the discriminatory mass genocide of 11-17 million people, the vast majority of which were European Jews. Hirohito, former Emperor of Japan, should strike a similar bell with people when they hear his name because Japan carried out genocide on Chinese civilians and soldiers in World War II. Japan’s attack on the Chinese city of Nanking, was one of the most atrocious events in history. This event has been named both the Nanking Massacre and the Rape of Nanking. The torturous, violent techniques used by the Japanese army upon Chinese civilians and soldiers including dehumanizing them, addicting them to drugs, and other perverse and violent acts, are some of the most grosteque methods ever recorded that could only be thought of by sadistic Japanese soldiers. The events committed by the Japanese army in Nanking, are equally as disgusting as the acts that Nazi Germany committed and should become a major topic involved with World War II in the future, despite the lack of light shed on it in the past for various reasons.
Throughout The Crucible, Reverend Hale is a faithful and intelligent minister. He comes to Salem as the spiritual doctor to respond to the rumors of witchcraft, which have been flying in Salem after the strange illness of Reverend Parris’s daughter, Betty Williams. Hale never declares witchcraft, but he relies on people’s evidence of it because of the large amount of evidence. As the play goes on, Hale’s intelligence leads him to other sources of hysteria and accusations. The change in the character of Reverend Hale is noticeable throughout the play. In The Crucible by Arthur Miller, Reverend Hale grows from a confident, authoritative figure, trying to end witchcraft in Salem, to a regretful, fair character who wants to end injustice and save innocent lives.
The Salem witch trials were a time period in which there was mass chaos and very little reason. In, “The Crucible,” by Arthur Miller, there were an elect group of people that overcame this hysteria of the trials. Among the people of reason arose, Reverend Hale, who displayed both sides of the hysteria. Reverend Hale is a dynamic character as he transforms from a character following the strict law and causing the deaths of many, to a character that understands the ridiculousness of the trials.
The Rape of Nanking uses Nanjing Massacre as the core and analyzes the holocaust from the national perspective of China, Japan and Western countries; it also analyzes this piece of history that has been distorted for half of the century. The book is divided into two parts; the author starts the first part by explaining the Japanese bushido spirit and how it was forced to open the country to others, from the Meiji Restoration to enhancing the troops; from tasting the sweetens of external expansion to the depression of international exclusion; from the earthquake disaster to the economic crisis and then expanded its military and the reasons to invade China; it explains how the Japanese soldiers were divided into three groups and invaded Nanjing and when they got there how did they killed the Chinese soldiers and citizens and raped the Chinese ladies and she also mentions the matter of comfort women to bring in the issue and analyzes the motivation for the massacre. Nanking was in great chaos at that time and even the infants could not escape from the disaster. Chang also analyzes the Chinese tragic massacre scene by showing how the...
Edgar Allen Poe is often thought of as being one of the most depressed and morbid American writers of all time. His fascination with death can be seen in his short stories, such as “The Masque of the Red Death”, and his poetry, such as “Spirits of the Dead”. His tragic life left him with depression, a drinking problem, a suicide attempt, and eventually, an untimely death. Though one could argue that Poe’s depression was due to his unfortunate life, his behaviors and drinking problems, coupled with his argumentative nature and lack of self control point to a personality that is high in neuroticism and low in agreeableness and conscientiousness.
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Despite having the horrific Nanking Massacre occur 70 years ago, its history is barely buried like many of the dead were at the time. The Nanking Massacre (also known as the Rape of Nanking) occurred as a part of the 2nd Sino-Japanese War, which would then become part of World War II. This war involved the Republic of China defending against the invading Japanese forces. Unfortunately, China was weakened due to a civil war between the Communists and the Nationalists, so it was easily invaded. The Nanking Massacre shows the negative elements of Human Nature and should be taught in schools because it portrays the brutality of the Japanese in Asia.
The relationship between Elizabeth and Darcy, in Jane Austen’s novel “Pride and Prejudice” explores marriage and love. It shows how their class expectations and marriage play a major role in deciding how their relationship will end. When they meet each other at the first ball, Darcy says “She [Elizabeth] is tolerable, I suppose, but not handsome enough to tempt me; I am in no humor at present to give consequence to young ladies who are slighted by other men. You [Bingley] had better...
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When 1937 arrived, Japanese soldiers raided China’s capital of Nanking and began to mass murder citizens. A sole leader of the Japanese Imperial Army was non-existent. There were many of people in power such as generals who allowed these behaviors to occur. Baron Koki Hirota, Foreign minister at the time, proceeded to do nothing while being well aware of the Japanese’s persecution of the Chinese. These unsympathetic murders of those who were thought to be Chinese soldiers as well as woman, children and elderly. This massacre lasted between the 1937 and 1938. Within this time 300,000 Chinese citizens were viciously killed. This genocide is called Rape of Nanking because of raping the woman before killing them. Most likely this group was selected because the second world war happened in Asia. This was significant because a country was able to kill half the population of another. I believe the reason of this Genocide was for Japan to take advantage of China while expand Japan. Most likely the Japanese wished to exterminate China’s entire population.
In Pride and Prejudice, Elizabeth Bennet and Mr. Darcy both go through dramatic changes in their attitude towards each other. Darcy is devoted to Elizabeth, but denies it because of her family and her lower status. Elizabeth believes Darcy to be arrogant and interfering. Through conversations these characters have, their true regard for each other is discovered. Austen effectively uses dialogue to develop the change in the principal characters’ moral temperament, and also to advance significant concerns in the novel such as marriage and wealth-based status.
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Kanemasu, Yoko. "Rugby Is a Sport That Has given Fiji International Recognition. The Professionalisation of Rugby Has Led to a Growing Number of Elite Players Emigrating from Fiji." International Review for the Sociology of Sport. Dec2013, Vol. 48 Issue 6, P720-735. 16p (n.d.): n. pag. Web.
The advent of penicillin forever changed the world of medicine at its discovery with its ability to treat diseases, deadly at the time, that are now considered commonplace and easily treatable. Penicillin was one of the greatest discoveries of the twentieth century, as antibiotics are one of the most highly prescribed drugs in the world today. Although its discovery is often described as serendipitous, the process by which it was cultivated was quite meticulous, and continued attention has been paid to penicillin's further development. It is because penicillin and its derivatives have played such a vital role in everyday medicine that it is such an important topic.
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