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Supernovas

... occurs about once every 30 years in any one galaxy. At some time in their long lives, the supernova-spawned neutrinos of 20 million electron voltes or less interact with matter. These neutrinos include low energy electrons that give off light and can be detected in pure water. are massive exploding giant stars. When the explosion occurs, the resulting illumination can be as bright as an entire galaxy. One of the most energetic explosive happenings known is a supernova. occur at the end of a stars lifetime, when its nuclear fuel is exhau ...

Number of words: 1068 | Number of pages: 4

Genetic Engineering

... a bacterial origin of replication, when the whole recombinant construction is introduced into a bacterial colonies all derived from a single original cell bearing the recombinant vector, in a short time a large amount of DNA of interest is produced. This can be purified from contaminating bacterial DNA easily and the resulting product is said to have been "cloned". So far, scientists have used genetic engineering to produce, for example: - improve vaccines against animal diseases such as footrot and pig scours; - pure human products such a ...

Number of words: 390 | Number of pages: 2

Effects Of Marijuana

... around 44% of US high school students have smoked it. Marijuana users are not easily detectable, nor is the drug just used in one area of society. The Indian Hemp plant is found all over the world, including the US. There are three different types of Indian Hemp. They are Cannabis Sativa, Cannabis Indica, and Cannabis Rudderalis. These three plants vary in size and mood altering effect. The hemp plant has many uses and has been farmed for centuries. Marijuana can be taken in three ways, by eating, made into a tea, or smoking ...

Number of words: 1053 | Number of pages: 4

Depression 5

... to the point where it affects that person’s daily life and activities. Depressed individuals tend to feel helpless and hopeless, and blame themselves for these feelings. In some cases thoughts of death and suicide may come into play, depending on the seriousness of the depression. People who are depressed may find it difficult and become overwhelmed by simple daily tasks, which is why sometimes they withdraw from daily activities altogether. They may even withdraw from families and friends. Rod Steiger an Academy Award-winning actor who ...

Number of words: 2664 | Number of pages: 10

Angina

... Often an exercise test with radioactive thallium is performed if the diagnosis is in question, and sometimes even a cardiac catheterization is done if the outcome is felt necessary to make management decisions. This is a complex area which requires careful judgment by physician and patient. is a manifestation of coronary artery disease, the same disease leading to heart attacks. Coronary artery diseas refers to those syndromes caused by blockage to the flow of blood in those arteries supplying the heart muscle itself, i.e., the coronary art ...

Number of words: 801 | Number of pages: 3

Nucleic Acids

... of the helix. 3. The two strands are held together by hydrogen bonding between pairs of bases such that guanine always pairs with cytosine and adenine always pairs with thymine; this is called complementary base pairing 3. The diameter of the helix is 2.0 nm and adjacent bases are separated by 0.34 nm and inclined at 360 relative to each other. This means that each complete turn of the double helix contains about 10 base pairs. 4. The amount of guanine is usually equal to that of cytosine. The monomers of RNA and DNA are called nucleotides. ...

Number of words: 425 | Number of pages: 2

Reforestation

... in a forest begins. There are many reasons why forests are cut down. One is to benefit economically, with furniture and home building. But there is also another reason. Arguments say "the United States could help slow the atmospheric accumulation of carbon dioxide by replacing old-growth forests with faster-growing young trees". A new study of young and old forests says how this is in fact not true. Loggers have said that new trees pull the carbon dioxide better than old trees, and this may seem true, but it is not. There is one point b ...

Number of words: 795 | Number of pages: 3

Lsd 2

... It was first accidentally discovered by Albert Hoffman in 1938 in Switzerland, who was searching for possible therapeutic uses of Ergot. Hoffman continued his experiments, but never came in contact with the crystals until1943. (LSD can be absorbed through the skin.) Hoffman then sent LSD around the world to be tested and investigated to find medical uses. Lysergic acid deviates were found to relieve migraines and control postpartum hemorrhage because it causes veins to contract, but also caused gangrene of the limbs, and so further experime ...

Number of words: 769 | Number of pages: 3

Lyra-the Star

... which is just above Hercules. Looking south in July will allow you the most ease in locating it, as it is almost overhead and near the center. If you use a star chart to help in finding it, as I said it is near HERCULES in LYRA and is the brightest star shown as a large star shaped object, on the star chart it will easily be sighted by the name Vega written next to it. If your sense of direction is legendary you will have no problem finding this legendary star. Al-Waki or "The Falling" is the Arabic name for Vega, to the Greeks Lyra belonge ...

Number of words: 606 | Number of pages: 3

Cloning 7

... single genes, determine their nucleotide sequences, and reproduce them in the laboratory. This offers the possibility of creating entirely new genes with commercially or medically desirable properties. While the potential benefits of genetic engineering are considerable, so may be the potential dangers. For example, the introduction of cancer-causing genes into a common infectious organism, such as the influenza virus, could be hazardous. We have come to believe that all human beings are equal; but even mor ...

Number of words: 611 | Number of pages: 3

Should There Be A Nuclear Power Plant In Saskatchewan?

... power from other provinces in order to have, that is how serious the shortage is. In Saskatchewan there is lots of unemployment. Building a nuclear power plant would create more jobs. This would also benefit the government because less people would be collecting unemployment insurance and welfare. Thus adding to the amount the government could be spending on other things such as fixing highways, better healthcare, and more funding to school. Nuclear power is also a lot environment wise. Nuclear power requires a mere fraction of the space ...

Number of words: 436 | Number of pages: 2

Autism 2

... 15 of every 10,000 individuals. No one is certain why it occurs, but researchers have found that MRI (Magnetic Resonance Imaging) scans of people with autism show abnormalities in the structure of the brain. Significant abnormalities include differences in the cerebellum and in the size and number of Purkinje cells within the brain. Sometimes there is a pattern that exists within families from generation to generation. This indicates the possibility that autism is genetically related. However, no gene has been found. Every person with ...

Number of words: 1079 | Number of pages: 4

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