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Essays on Science

Genetic Engineering -
Download This PaperWords: 980 - Pages: 4

... reported that they cloned a sheep-named Dolly-from the cell of an adult ewe. The next goal of scientists is to sequence all human DNA by 2003, the Human Genome Projects current target date (Lemonick 46). But we should use genetic engineering in a proper way. Our goal should be to find areas where it is needed rather than try to misuse it for personal gain. Genetic engineering can provide medical benefits to humans, but limits have to be set. Our body contains one hundred trillion cells, inside most cells is a nucleus that contains a complete set of the body’s blueprints. Those blueprints are twisted into forty-six packets called chromosomes. Unravel a ...



Cryogenics: Is It Worth Waiting For
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... scale absolute zero has a value of zero degrees on the thermometer. In theory no substance can be lowered to or below zero degrees Kelvin or absolute zero. Temperatures in cryobiology range from zero degrees Celsius--water freezes--to just above negative two hundred and seventy three point sixteen degrees Celsius--absolute zero. The word "Cryogenics" comes from the Greek word “kryos” meaning cold (“Cryogenics” Raintree 127, Kavaler 16). The science of cryobiology was first recognized in the early nineteen sixties. Cryobiology is the study of the effects of extremely low temperatures on living animals and plants. The chief concern in cryobiology is to preser ...



Breast Implants
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... evaluations that need to be done ("Student Handbook"). The most important ones are the; Chemical Characterization, Pharmacokinetic Studies. These are all tests that the Plastic Surgery and Reconstructive Surgery Devices Branch Division of General Restorative Devices and the Office Of Device Evaluation all require (ODE documents 6). The Chemical Characterization, is an important test. It does all of the following. If fabrication of the device involves curing of polymeric components by chemical crosslinking, then data establishing should be provided. This may be done by a various methods, for example: Measurement of Young’s modulus at low strain, as this is appr ...



The Dog
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... they sometimes accept eating green plants. The ecology of dogs right know is that it helps the human in many fields of life. Since the cave dweller times, dogs have been domesticated by humans and it has helped him to hunt, in herding, protection, etc. It has been very important as a work animal and as a psychological support for humans. The habitat of the dog is where it’s owner lives. Different dogs have different adaptations to their ancestral habitat but nowadays, this is not applicable. ANATOMY SKELETON The skeleton of the dog is the articulated structure, moved by the muscles, that holds the dog’s body and protects some organs and the nervous system. It ...



Depression 7
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... Episodes can be short or long but are usually brought about by an incident in a person's life. An example of this is if someone close to them dies. The other kind is called bipolar or manic depressive illness, it is recognized by alternating depressed and manic episodes. This is an actual brain disfunction. In the major depression or the depressed phase of bipolar illness, a depressed mood predominates, even though the patient may not be aware of feeling sad. Typically, he or she loses all interest in activities. Symptoms include sleep disturbances, not able to concentrate or to make decisions, loss of appetite or greatly increased appetite, slowed thinki ...



Atom And Qi
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... universally believed by people to exist as the result of scientific evidence. In contrast, ¡¥qi¡¦ is not believed to be a scientific phenomena and is considered a religious or superstitious belief. As a result, in order to demonstrate the existence of ¡¥qi¡¦ and make it conceivable by modern physicists, the use of the scientific method becomes the qi researchers¡¦ best tool. In addition, while qi and the atom were both conceived by ancient philosophers, the notion of the atom was better developed by scientists than the idea of qi. Therefore, by looking back at the historical progression towards a belief in atoms and the deduction of their structure, we know how ...



Genetic Cloning ----
Download This PaperWords: 1390 - Pages: 6

... cycle of pigs. The biggest obstacle is the issue of rejection. The new organ is typically killed, even before the surgeon closes the incision, due to hyperacute rejection. This process clots the blood, by forming antibodies that attach to the endothelium of the blood vessels in the organ. The complement system creates gaps in vessels, allowing gaps to form and clots to accumulate. Therefore, a complement inhibitor was developed as the gene was cloned, introduced into pigs whose cells produced this protein. Another thing discovered, was that the cells lining the pig vessels have a sugar molecules called alpha-galactose, and humans have lots of antibodies again ...



Bats
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... Body Due to the great variety of species of bats some characteristics vary greatly but the Little Brown Bat is a good example of a bat. It has fur on its body, large naked ears, its rear legs have claws, it has a tail membrane, and it has the most distinguishing feature of a bat, wings (Lauber 9). The upper arm of the bat is short while the forearm is very long. The wrist is very small and from it comes the thumb and the four longer fingers. The thumb is short and used for climbing or walking. The fingers are long and thin. Interlocking the fingers is the wing. This set up of having the fingers in the wing gives the bat amazing flight maneuverability ...



Revolutionary QM212
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... for building an anti-fluorescein antibody in the DNA of bacteria. This antibody binds with fluorescein molecules. Into this chunk of material, they inserted instructions for buildin g a metal-ion binding sight. They discovered where to put this slot by simulating the antibody on a large computer. The resulting product revealed an anti-fluorescein antibody which binds to metal ions. After physically inserting the genetic code in to E. coli. bacteria, the researchers had a large batch of a new compound which they named QM212. When copper was added to this new batch, it binded with the metal-ion binding sight, decreasing the fluorescent emissions. Applica ...



Magnesium, Beryllium, And Calcium
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... (Epson salt) are well known. Milk of magnesia is used in medicine as a laxative. Magnesium is also used in artificial limbs, vacuum cleaners, snow skis, wheelbarrows, and lawn mowers. In 975AD calcium was useful for setting broken bones. There have been many uses for calcium over the years, but calcium has not been available on a large scale until the twentieth century. Calcium is a metallic element, which is fifth in abundance in the Earth’s crust. It is essential for forming leaves, bones, shells, and Portland Cement. Calcium occurs in many highly useful compounds such as marble, limestone, and chalk. Plants and animals must have calcium to live. A plant ...




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