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Search results 3801 - 3810 of 5332 matching essays
- 3801: Darwinism
- ... genes. Supporters of neo-Darwinism believe that natural selection operating upon random variation gave rise rise to all animals and plants. While the source of variation is random, the direction of evolution is not. In effect, natural selection removes chance, and it makes the theory of evolution plausible. If neo-Darwinism is correct then numerous small successive changes guided by natural selection gave rise to all animals and plants. I will ...
- 3802: Chemistry Hits The Beach
- ... to irritate skin and to stain clothing. The next big break through didn't occur until the 1970s when the carboxylic acid group was functionalised with a long chain aliphatic alcohol. This change had no effect on it's absorption factor, but it was suddenly waterproof ! These PABA esters were also much less irritating to our skin. In the 80's a cry of distress was emitted by the public when ...
- 3803: Cancer Treatments And Breakthroughs
- ... developed during the 1940s, but they were given one by one, and weren't good forms of treatment. In the 1960s, doctors realized that if they would combine the drugs, they would have a better effect on the cancer. Now, chemotherapy can be effective, but doctors have to limit the doses that they give their patients. This is because the drugs ares so strong that the side effects could damage the ...
- 3804: Chemistry Investigation
- ... up the molecules more, it makes particles collide more often in a certain time, and makes it more likely that collisions result in a reaction. Because there are more effective collisions, temperature has a large effect on rates of reaction. If you raise the temperature by 10 C, you roughly double the rate of many reactions. Evaluation I think that there are some improvements that I could make to the way ...
- 3805: Cannabis Sativa
- ... anxiety, loss of concentration, slower movements and reflexes as well as time distortions. The drug also impairs short term memory which makes it as dangerous as alcohol as far as motor skills are concerned. The effect of the drug lasts from 2-4 hours, once the high is gone, a person feels drowsy, tired and unmotivated, headaches have also been reported. Long term users of marijuana risk cancer and other smoking ...
- 3806: Cryogenics And The Future
- ... a "thermodynamic process in which the temperature of a gas is expanded without adding or extracting heat from the gas or the surrounding system"(Vance 26). At the same time Pictet used the "Joule-Thompson Effect," a thermodynamic process that states that the "temperature of a fluid is reduced in a process involving expansion below a certain temperature and pressure"(McClintock 4). After Cailletet and Pictet, a third method, known as ...
- 3807: Cisc And Risc Processor Technologies
- ... the machine. Many specialized instructions aren't used frequently to justify their existence. Approximately 25% of the available instructions are used in a typical program. CISC instructions typically set the condition codes as a side effect of the instruction. Not only does setting the condition code takes time, but also programmers have to remember to examine the condition code bits before a subsequent instruction changes them. Next RISC is described and ...
- 3808: Creatine 2
- ... occurs when you use Creatine and work out for extended amounts of time. This can cause major constriction of the vessels around the heart causing abnormal heart rates and heart attacks. Pancretitis is another side effect where the pancreas stops working and fails. Creatine is said to be directly related to pancretitis if it is being used when it occurs. Asthma is said to be directly related to some types of ...
- 3809: Color Blindness
- ... New York: 1997 Color Blindness, Access Health, Inc., 1996 Morton Plant Mease Articles: Color Blindness, Diana H. Health, M.D., Morton Plant Color Blindness, Unknown webpage. Color Blindness, Robert A. Berthold The Physiological Factors That Effect Color Perception, unknown website.
- 3810: Cancer 3
- ... head-to-head double-blind studies, glucosamine sulfate was shown to produce better results that NSAIDs in relieving the pain and inflammation of osteoarthritis despite the fact that glucosamine sulfate shows little direct anti-inflammatory effect and no direct pain relieving effects. To support this statement, it has been shown that glucosamine produces consistent benefits in those with osteoarthritis. In addition, the use of glucosamine is said to be superior to ...
Search results 3801 - 3810 of 5332 matching essays
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