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Essays on Science

A Critique Of The Stanford Experiment
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... of what to do from outside sources, such as television and movies. The guards were given uniforms and night sticks and told to act like an ordinary guard would. The prisoners were treated like normal criminals. They were finger printed and booked, after that they were told to put on prison uniforms and then they were thrown into the slammer (in this case a simulated cellblock in the basement was used). All of the participants in this experiment at first were thought to be similar in behavior but after one week, all of that changed. The prisoners became "passive, dependent, and helpless." The guards on the other hand were the exact opposite. They became ...



Droughts
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... drought is usually defined as more than 14 days without a notable amount of precipitation, onthe other hand a drought may last for years. tend to be more severe in some areas than in others. Catastrophic generally occur at latitudes of about 15°-20° and in areas bordering the permanently arid regions of the world. Lands that are permanent arid is a characteristic of those areas where warm, tropical air masses, in descending to earth, become hotter and drier. When a poleward shift in the west ocurrs, the high-pressure, anticyclonic conditions of the permanently arid regions hit each other on areas that are normally used to seasonally wet low-pressure weather an ...



Marijuana 2
Download This PaperWords: 863 - Pages: 4

... be considered varieties rather than species. Most recreationally used cannabis is the result of interbreeding between these three types. The term 'hemp' is generally used to describe low-thc varieties of cannabis, which are grown for industrial uses. The strength of cannabis varies greatly from one variety to another. Some, known as 'one-hit-shit', requires only a single lung-full to reach full effects while other varieties require many hits to achieve the same effects. Additionally, the amount that one individual likes to smoke can be many times what another prefers. Generally, 1/8 ounce (3.5 g) of mid-quality bud could get around 20-30 people reasonably high. ...



Murder, Rape, And DNA
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... areas at the crime scene. The investigators gathered the evidence, and took it to the laboratory where it was analyzed. The jury determined that the samples were contaminated because of the way they were handled. DNA Typing is not perfect. There are many loop holes in it. An example is the O.J. Simpson trial. During the process the DNA may be tampered with or damaged. In most rape cases DNA Typing is used by taking semen off the body of clothes then amplifying the genes. The machine that copies the DNA is called the PCR. The DNA is then cut and placed the wells in trays. PCR copies the small pieces of DNA. It is performed by a blotting process. This pr ...



The Effects Of UFO's On People
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... sightings and stories of extra terrestrials are not authentic. The United States government has records of thousands of UFO sightings since 1948, including photos of alleged UFOs and interviews with people who claim to have seen them. Since UFOs were considered a potential security risk, the report on these sightings was originally classified as secret. (Craig, 917) When the report was later declassified it showed that 90 percent of all UFO sightings could be easily explained. Most of the sightings turned out to be celestial objects, such as stars or bright planets like Venus, or atmospheric events such as auroras or meteors falling through the atmosphere. Many ...



Evolution Of Immunity And The Invertebrates
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... animals today were present millions of years before when hey were just beginning to evolve. His studies opened up the new field of comparative immunology. Comparative immunologists studied the immune defenses of past and current creatures. They gained further insight into how immunity works. The most basic requirement of an immune system is to distinguish between one's own cells and "non-self" cells. The second job is to eliminate the non- self cells. When a foreign object enters the body, several things happen. Blood stops flowing, the immunity system begins to eliminate unwanted microbes with phagocytic white blood cells. This defensive mechanism is possessed ...



Diabetes
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... into the blood in the small intestine. People who don't have rely on insulin, a hormone made in the pancreas, to move glucose from the blood into the body's billions of cells. But people who have either don't produce insulin or can't efficiently use the insulin they produce. Without insulin, they can't move glucose into the cells. Glucose accumulates in the blood, a condition called hyperglycemia ("hyper" = too much, "glycemia" = glucose in the blood). Hyperglycemia causes intense thirst, the need to urinate frequently, blurred vision, fatigue, and other symptoms. Over time, high blood glucose can cause very serious medical problems. Adding up the total tol ...



Geneticists
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... amount of bioscience education possible. Jobs can be acquired by asking your professors, but, they may not be aware of any need for geneticists. Many times, reading advertisements may of some good. You may even make an appointment with biology and genetic firms yourself. Sometimes clinics or hospitals may even need a genetic specialist. I, myself, could also see a geneticist opening up his own clinic, such as radiologists do. In this way they could be able to make more money considering the amount of highly specialized geneticists with a Doctor of Medicine. The current payment outlook is not good for geneticists. A starting geneticist working makes ...



Awakenings And Tourette Syndro
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... era. Like many others who contracted this illness, Leonard and those like him were often misdiagnosed and eventually placed in mental hospital facilities because of their apparent vegetative state. Doctors who worked on the earlier cases believed the patients mental faculties to have been destroyed by the illness. Dr. Sayer (Dr. Oliver Sacks in real life) discovers that certain vegetative patients reacted to outside stimuli, such as a pattern on a floor, a tossed ball, or a television with a maladjusted vertical hold. Finally, Dr. Sayer comes across Leonard as a middle-aged man, some thirty years after he was originally afflicted with the disease. After doing ...



Chromium
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... Stainless steel is used to make cutlery and kitchen equipment because it does not rust easily and takes a mirror-like polish. This steel contains about 13 percent chromium and 0.3 percent carbon. The hardness of steel can be increased by adding small quantities of chromium to it. Chromium steel alloys (mixtures containing one or more metals) are used to make armor plating for tanks and warships. They are also used for ball bearings and the hard cutting edges of high-speed machine tools. Nickel is highly resistant to electric current and is often added to chromium steels to make them easier to work. For example, stainless steel sinks can be pressed out ...




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