Papers on Science and Environment
Cosmology
Words: 1156 - Pages: 5.... view of the universe (this because the explosion would have sent mass outward in every direction), but I wouldn’t think of it as the origin of the universe. I mean, in my mind, something had to be there to cause this super mass. Was the universe contracting until it formed this huge mass? I believe that we may never know how the universe came about, rather have some idea as to what came directly before it’s current state as well as before that and so on. We could come up with ideas until we die, and someone would just continue in our footsteps. I do have one idea as to how this super mass which is the being behind the big bang theory cam .....
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Chromatography
Words: 666 - Pages: 3.... mixture components to be separated from each other by using these differences to determine the transit time of the solutes through a column.
Simple liquid consists of a column with a fritted bottom that holds a stationary phase in equilibrium with a solvent. Typical stationary phases (and their interactions with solutes) are: solids (adsorption), ionic groups on a resin (ion-exchange), liquids on an inert solid support (partitioning), and porous inert particles (size exclusion). The mixture to be separated is loaded onto the top of the column followed by more solvent. The different components in the sample mixture pass through the column a .....
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Acid Rain
Words: 795 - Pages: 3.... is often quite difficult. A lake does not become
acid over night. It happens over a period of many years, or even decades.
The changes are usually to gradual for them to be noticed early.
At the beginning of the 20th century most rivers and lakes like the
river Tovdal in Norway had not yet begun to die. However by 1976 local
inspectors were noticing that many of the lakes were beginning to show
signs of death. Fish were found dead along the banks of many rivers. As the
winters ice began to melt off more and more hundreds upon hundreds more
dead fish were being found. As scientists continued to work they found many
piles of dead fish, up .....
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Mitosis In Cancerous Cells
Words: 1530 - Pages: 6.... making two daughter cells.
This is a very complex process which needs to be completed perfectly, in order for the cell to divide and replicate normally. Very often a cell loses its regulation, and begins replicating out of control, that is it becomes cancerous.
Abnormal cell growth is often known as cancer. During which, cancer cells do not respond normally to the body's control mechanisms. They often divide excessively, invade other tissues and, if unchecked, can kill the whole organism. Researchers studying cancer cells in culture have found that they do not respond to the normal signals that stop growth such as contact inhibition. The .....
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Alzheimer’s Disease
Words: 739 - Pages: 3.... ten percent loss is relatively minor, and cannot account for the severe impairment suffered by Alzheimer's victims. Neurofibrillary Tangles are also found in the brains of Alzheimer's victims. They are found within the cell bodies of nerve cells in the cerebral cortex, and take on the structure of a paired helix. Other diseases that have "paired helixes" include Parkinson's disease, Down's syndrome, and Dementia Pugilistica. Scientists are not sure how the paired helixes are related in these very different diseases. Neuritic Plaques are patches of clumped material lying outside the bodies of nerve cells in the brain. They are mainly found i .....
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Encephalitis -
Words: 699 - Pages: 3.... the brain tissue as they try to fight off the infection. The brain tissue swells (cerebral edema) and can cause destruction of nerve cells, bleeding with in the brain (intracerebral hemorrhage), and brain damage. This can cause neurologic deficits such as parplysis, speech changes, increased intracranial pressure, respiratory failure, seizure disorders, and shock can occur.
SIGNS AND SYMPTOMS
Mild cases absent superficial reflexes
Sudden fever *** exaggerated deep tendon reflexes
Poor appetite opisthotnos
Loss of energy nuchal rigidity
General sick feeling increases resp. tract problems .....
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Dna
Words: 977 - Pages: 4.... compounds, also called bases. The four are adenine (A), guanine (G), thymine (T), and cytosine (C). The deoxyribose molecule occupies the center of the nucleotide, with the phosphate group on one side and a base on the other. The phosphate group of each nucleotide is also linked to the deoxyribose of the adjacent nucleotide in the chain. These linked deoxyribose-phosphate subunits form the side rails of the ladder. The bases face inward toward each other, forming the steps of the ladder.
The nucleotides in one strand have a specific association with the corresponding nucleotides in the other strand. Because of the chemical affinity o .....
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Armadillo
Words: 438 - Pages: 2.... of larger Armadillo bones from
the past. Some of the past bones were as much as sixteen feet long
including the tail. Some even migrated to Texas.
There are several species of these animals. The Six-banded Armadillos
were good burrowers and massive devourers of insects. They also ate
vegetable matter and were useful for devouring carrion. One specie called
the Peludo was clumsy bet was effective in getting a snake to its armored
hide and grinding the life out of it. It then eats the snake not effected
by the poison. The king of the tribe is the Great Armadillo. It is a big
creature in appearance, a yard in length f .....
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The Downy Woodpecker
Words: 3725 - Pages: 14.... is
also a location call, known as a "whinny", made up of a dozen or more tchicks
all strung together.
Scientific Names
The downy woodpecker's scientific name is Picoides pubescens. There
are also six particular downies with six particular scientific names all from
different regions of the United States and southern Canada which I have listed
below:
southern downy / Dryobates pubescens Gairdner's woodpecker / Gairdneri pubescens
Batchelder's woodpecker / Leucurus pubescens northern downy / Medianus pubescens
Nelson's downy / Nelsoni pubescens willow woodpecker / Turati pubescens
The downy woodpecker is sometimes ref .....
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Global Warming
Words: 2223 - Pages: 9.... as a result of .
It is important that society treat human-induced as a serious global-scale environmental threat. The overwhelming majority of scientific experts believe human-induced climate change is inevitable. The question is not whether climate will change in response to human activities, but rather where (regional pattern), when (the rate of change) and by how much (magnitude). (17,18).
Alarming information and trends are leading the scientific community in this same belief. The concept of is predicting detrimental events for the future.
The most prevalent issue of is the increase in overall world temperature. In the thi .....
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