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» Browse Science and Environment Term Papers
Nickel Metal Hydrive Battery For Electric Vehicals
Number of Words: 610 / Number of Pages: 3
... hand, the hydroxyl ion ( from water) reacts with Ni(OH)2 at the positive electrode to form NiOOH. Ni now change from +2 to +3.
Ni(OH)2 +OH = NiOOH + H2O + e
From equation (1) and (2) there is no net change in electrolyte quantity or concentration over the charge and discharge cycle. We can see that it is different from other alkaline electrode such as NiCd which water is produced at both electrode during charge and used up during discharge. In the NiMH battery, the constant average concentration can reduce the corrosion and swelling.
MATERIAL REQUIRED
Because the NiMH battery need to store a ...
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Cellular Diffusion
Number of Words: 595 / Number of Pages: 3
... a region of high concentration, to a region of low concentration of that substance. In other words, a movement down the concentration gradient. Osmosis is very similar to diffusion, however it involves the concentration of water. Osmosis, like diffusion, is a passive process, and does not require energy to occur. Active transport does require energy though, as it involves movement up the concentration gradient. This involves protein carrier molecules binding to the substance and moving it into or out of the cell, against the concentration gradient.
If a large molecule needs to be moved in or out of ...
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Hemophilia Manitoba
Number of Words: 925 / Number of Pages: 4
... hemophilia disorder because all he can pass on is
the defective X-chromosome.
Males mostly have hemophilia, but women can also have
hemophilia. This is extremely rare though because two
defective X-chromosomes would be needed. In fact, the
first proven case of women having hemophilia was not until
the 1950’s (Bornstein 89). Female carriers are also at
risk. These women are known as asymptomatic carriers and
may suffer excessive menstrual bleeding, bruising,
nosebleeds, and problems during childbirth.
One serious problem with hemophilia is joint bleeds. When
a joint bleeds, ...
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MPD
Number of Words: 751 / Number of Pages: 3
... for the murder. Through the whole movie he had two personalities, one was a sweet, innocent, quite boy and the other was the man that had killed this other man. This personality was a very cruel and loud man. The court had decided to let him go because he had this disorder. At the end, come to find out the boy was just acting and there was no sweet, innocent personality. Only one and that was the one who was a cruel, cold-hearted murder. I believe that this movie shows why they can not use this disorder in court systems. Because there is no way that you can prove that you have this disorder ...
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The Metric System
Number of Words: 464 / Number of Pages: 2
... being zero and two hundred and twelve degrees being the boiling point, While the Celsius (metric unit of measure for temperature) is read with one degrees Celsius being the freezing point of water, and one hundred degrees Celsius being the boiling point.
I think that should be used everywhere in the world because it would make all measurements universal and understandable. I think that the United States of America will someday switch to the metric way of measuring.
There is only one thing that I really don’t like about and that is that a meter stick is like a ruler and it is most commonly used ...
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Endangered Species
Number of Words: 625 / Number of Pages: 3
... of species. For example, as tropical forests are cut down, primates have progressively smaller feeding and living spaces. They also become more accessible to hunters, who kill monkeys for food and trap many primates for sale as pets, research animals, and zoo specimens. Some animal species may move into human communities when their own are destroyed. Extermination of marauding monkeys, roaming tigers, or foraging deer is easy to justify by people whose livelihood is threatened. Pollution is another form of environments change. Forty species of birds in the United States, including peregrine haw ...
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Cloning
Number of Words: 1846 / Number of Pages: 7
... is to split the cells of a early
multi-celled embryo which will form two new embryos (Lawren).
For it to get started into practice it took more than fifty years of
questioning and testing. The first successful cloning experiment involved a
leopard frog. It took place in, 1952 with group of scientist from the
Institute for Cancer Research in Philadelphia (Lawren). To clone the frog they
used an embryonic frog cell nucleus(Margery). 1962, John Gurdon of Cambridge
University cloned a toad that survive threw adulthood and was able to reproduce.
He was also the first to take a nucleus from a fully co ...
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ESP
Number of Words: 1740 / Number of Pages: 7
... types of , clairvoyance, precognition,and telepathy. Clairvoyance is the extra sensory perception of events that are taking place at the exact time of the perception, but the sensor cannot know of these events through any of the five senses. Precognition is the extra sensory perception of events in the future. And finally, telepathy is the extra sensory perception of someone elses mental state.
For centuries, stories about ESP sounded suspicious to those who had scientifically trained minds. After all, they were usually tales told after the fact. The event had already happened when the subj ...
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Oil And Protecting The Environment
Number of Words: 357 / Number of Pages: 2
... 1997, the latest year that Coast Guard statistics are complete, the
volume of oil spilled in U.S. waters declined by two-thirds compared to
the year before, representing the lowest amount recorded since the Coast
Guard began publishing data in 1973. And more than three-fourths of those
spills were under 10 gallons -- less than a car's fuel tank holds.
Even as the industry strives to reduce the number and size of oil spills
still further, we've also learned a lot over the past decade about the
best way to respond when, despite all of our precautions, a spill does
occur.
Since the passage of the ...
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Pollution Getting The Best Of
Number of Words: 673 / Number of Pages: 3
... drive the same miles in four minutes?
Another popular source of waste is the post-consumer market. American citizens throw away millions of tons of garbage each year, and this trash has to go somewhere. While there are projects underway to clean and reuse this refuse most of it gets dumped into huge landfills. These landfills are disgusting festering blisters on our country's landscape. But people continue to consume and throw away more and more in the name of convenience. As they see it, when things
get old, throw it away and get a new one. They blame the government for the trash problem, but the ...
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