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Search results 901 - 910 of 1458 matching essays
- 901: Caffeine
- ... stimulates the brain, this makes you less tired, increases alertness, reaction time and improves motor coordination as well. Also, caffeine speeds up heart rate, movement of food in the digestive system, an increase of stomach acid and it makes certain muscles relax. The author says that caffeine may irritate an already existing ulcer. Caffeine can contribute to heart burn after a large meal because it relaxes the esophagus and stomach. Also ...
- 902: Arsenic
- ... At about 400° C it burns with a bluish flame, forming the As2O3 (arsenic trioxide), which is used as a rat poison. In water, arsenic combinations range from being quite soluble (sodium arsenite and arsenic acid) to practically insoluble (arsenic trisulfide). Twenty-one arsenic compounds are considered to be of concern because of their toxicity and/or presence in the environment. Commercial Uses Compounds of arsenic have been used since ancient ...
- 903: Anatomy Of A Muscle Cell
- ... enter the sarcoplasm both from the sarcoplasmic reticulum and from extracellular fluid. The mitochondria in cardiac muscle fiber are larger and more numerous than in skeletal muscle fiber. Cardiac muscle fibers can also use lactic acid produced by skeletal muscle fibers to make ATP, a benefit during exercise. I had already submitted my Email is Johnnynip@aol.com,please excuse me for forgetting my email address....thank you
- 904: Adamantane
- ... but not enough was created for the catalyst to be considered for mass production of adamantane. Catalysts that failed were: oil-bearing stone from Hodin with and without HF, aluminum silicate, aluminum oxide, concentrated sulfuric acid, zinc chloride, iron(III) chloride, tin(IV) chloride, antimony(V) chloride.5 It is believed that the reason many of the catalysts did not work, even though they are present in natural petroleum, is that ...
- 905: Charles Darwin And Richard Owen
- ... to them! In the literal sense of the word, no doubt, natural selection is a false term; but who ever objected to chemists speaking of the elective affinities of the various elements? - and yet an acid can be said to elect the base with which it in preference combines. It has been said that I speak of natural selection as an active power or Deity; but who objects to an author ...
- 906: Argumentative Environment
- ... cooperative efforts. It is hard to doubt that human beings are wasting or eroding the earth which we all live on. Not only have the industrial nations altered their natural settings by overbuilding dams, destroying rain forests, and driving species out of their natural habitats to die or mutate, but they have pushed the earth close to the limits of its resources. Lame Deer charges that because certain animals like coyotes ...
- 907: Animal Captivity
- ... endangered species even thought it is illegal and others buy the products made from these endangered species. There is more danger of loosing biodiversity from hunting, and loss of habitat. Every time part of a rain forest is cleared, animals are killed directly or indirectly when they lose their homes. Habitats are broken up by cities and farmland giving animals only small patches of land to live on and no way ...
- 908: Aids 4
- ... activity involves contact of infected semen or vaginal secretions with the mouth, esophagus (the tube that connects the mouth with the stomach) and the stomach. AIDS virus and infected cells most certainly cannot survive the acid environment of the stomach. Yet, it is still felt that there is a chance of catching the disease by having oral sex with an infected person. The chance is probably a lot smaller than in ...
- 909: Air Pollution
- ... lung cancer (Hodges 59). The second type is sulfur oxides which come from the burning of coal and industrial processes. Damage to materials, to vegetation, and to the human respiratory system are caused by the acid nature of oxides. Small quantities of sulfur oxides can increase illness and mortality (Hodges 59). The third type of pollutant is carbon monoxide. Carbon monoxide is a colorless, odorless, tasteless gas against which humans have ...
- 910: Awakenings And Tourette
- ... considered. He theorizes that a newly developed drug, L-Dopa, developed for the treatment of Parkinson's patients may benefit these patients. He doses Leonard, with no initial success. Once again he theorizes that the acid in the Orange Juice, which he had been giving with the medicine may actually be neutralizing the effects of the drug. He tries once more with milk, and obtains some rather startling results. The drug ...
Search results 901 - 910 of 1458 matching essays
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