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Essays on Science

Cystic Fibrosis
Download This PaperWords: 383 - Pages: 2

... improved medical therapies and nurtrient rich diets have enabled suffers to survive into adulthood. Research into the cause of reads like a detective story. One clue is that patients have excess amounts of sodium and chloride in their sweat making it vey salty . At the University of North Carolina researchers found that salt imbalance caues thick mucus to accumulate in the patients lungd. High level of salt in lung cells draw water out of the mucus causing it to thicken.The level of salt in a cell is determained by the movement of ions across the cell membrane.Ions are carried across call memebranes by protein channels embedded in the cell membrane. Since the st ...



Mononucleosis
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... with such an illness, which requires time to develop. is known to be caused by the Epstein_Barr virus (EBV), which can be passed by coughing, sneezing or saliva transfer, where it gets it’s popular name, the “kissing disease”. Much like chicken pox, most people don’t receive a second time in their life, but it can happen. Relapses can occur, but are fairly uncommon. Although you can receive the disease very easily, is not highly contagious, according to the majority of sources. Symptoms There are many symptoms associated with infectious , but the symptoms all depend on the individual. The more common symptoms are fatigue, sore throat ...



Alchemy
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... or . HISTORY OF From an early period the Egyptians possessed the reputation of being skillful workers in metals and, according to Greek writers, they were conversant with their transmutation, employing quicksilver in the process of separating gold and silver from the native matrix. The resulting oxide was supposed to possess marvelous powers, and it was thought that there resided within in the individualities of the various metals, that in it their various substances were incorporated. This black powder was mystically identified with the underworld form of the god Osiris, and consequently was credited with magical properties. Thus there grew up in Egypt the be ...



Global Warming 2 --
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... only problem with this is that humans enhance the process even more. Over the past 200 years the emissions of greenhouse gases have been increasing due to the increase in technology that humans have developed (example, factories). These human-induced gases include carbon dioxide, methane, nitrous oxide, and ozone depleting substances such as CFCs, also known as Chlorofluorocarbons, hydrofluorocarbons, and perfluorocarbons. These gases are generated a number of human activities such as fossil fuel combustion, waste disposal in landfills, the use of a refrigerator, numerous agricultural and industrial activities, and the cutting down of numerous forests. These hum ...



Earthquakes 2
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... 15, however, can take great tolls in death and suffering. When an earthquake occurs, the earth's crust breaks along a surface known as a fault plane. Faults are not always visible at the surface of the earth. A fault is a fracture within a rocky mass within the earth's crust. The depth and the length of faults vary tremendously. Earthquakes are caused by faults that are active. An active fault is a fault along which the two sides of the fracture move with respect to each other. An earthquake is caused by the sudden movement of the two sides of the fault. Faults are divided into three main groups, depending on how they move. There are normal faults which ...



Bacillus Anthracis
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... be the cause of a disease. is a very large, gram positive sporeforming rod. The organism is cultivated on ordinary nutrient medium and grows best aerobically, but can also multiply under anaerobic conditions. The disease, Anthrax, is very deadly but it is rare. The risk of infection is 1/100,000. The disease is acquired when spores from a contaminated animal carcass inoculate an open wound. Then, the spores germinate and invade the blood stream, leading to death within 48 hours. is classified as a harmful, pathogenic bacterium. There is a vaccine for Anthrax in humans, but it produces no significant immunity. The vaccine is given primarily to people who work with ...



The Roswell Incident
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... 2. The Yearbook IV. Alien Autopsy A. Bodies B. Authenticity V. Conclusion A. Controversy Continues B. Final Thoughts The Roswell Incident The Roswell Incident, which enlightened our minds to the capacity of excepting all, has remained one of the most controversial issues today. In Roswell, New Mexico, 1947, a strange occurrence arises. An alien craft from outer space crashed in an open field. The issue lay still for almost thirty years, until the thought of a government cover-up arose. Society's opinions have changed over the years. Previous to the 1990's, people have despised the thought of sharing the universe with ...



Salt And Its Uses
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... with heart disease, circulator disorder, stroke and even early death. By many doctors and researchers are now beginning to feel that salt has gone too far. At the University of Alabama, a short-term research has been done on 150 people on the effect of the intake of salt related to high blood pressure. Result shows that those with normal blood pressure experience no change at all when placed in a extremely low salt diet, or later when salt was introduced, Of the hypertensive subjects, half of those on the low salt diet did experience a drop in blood pressure, which returned to its previous leel when salt was introduced. Of course, these are ot ...



Canadian Black Bear
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... areas on spawning salmon. Their habitat includes forests with occasional open areas such as meadows. They occupy all of Canada starting from the tree line going south. They live in all provinces and territories except Prince Edward Island, where heavy de-forestation has happened and preferably away from brown bears (larger competitors). The only main risk for black bears are poachers who sell their parts illegally to the Asian medicinal market. In northern areas of Canada, the bear undergoes a remarkable metabolic transformation as it prepares for hibernation. Hibernation is an energy-saving process bears have developed to let them survive for long periods wh ...



The Effects Of Hurricane Gilbert
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... of Hurricane Gilbert include: atmospheric conditions, the category rating, and the proximity of its' eye. The effects of the hurricane consisted of property damage, economic losses, casualties and some solutions such as insurance and funds. Atmospheric conditions were some of thefactors that contributed to Hurricane Gilbert's intensity. Hurricane Gilbert had extremely powerful winds that reached 160 knots which is about 175 mph and gusts up to 121 mph (Stengel 18). At 10, 000 feet, Gilbert's Counter clockwise winds reached up to 200 miles per hour, and at ground level the winds were around 175 mph(Stengel 17). With winds that strong, almost nothing could sto ...




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