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Search results 161 - 170 of 291 matching essays
- 161: Hepatitis A
- ... 1977, the virus has since been characterized and labeled as a retrovirus. Delta hepatitis can also become chronic. A retrovirus is a virus that reproduces itself in a manner distinct from that of most other viruses. The core of any virus is a single molecule of nucleic acid, either DNA or RNA. When a virus invades a cell, this genetic material is usually replicated in its orignial form. A number of RNA viruses, however, make a facsimile of their genetic material in the form of DNA instead. In order to do so, they must be able to produce a particular enzyme that can construct a DNA molecule using ...
- 162: AIDS and HIV
- AIDS and HIV Introduction Being one of the most fatal viruses in the nation, AIDS (Acquired Immunodeficiency Syndrome) is now a serious public health concern in most major U.S. cities and in countries worldwide. Since 1986 there have been impressive advances in understanding of the ... is controlled by interactions between the host cell and elements in the viral LTR. The virus itself has no way of regulating when, here, or how much virus is produced. In contrast, the human immunodeficiency viruses have elaborate regulatory control mechanisms in the form of specific genes. Some of the genes permit explosive replication; other appear to inhibit production of virus. Mechanisms that suppress the production of certain viral proteins, such ...
- 163: Needle Exchange Programs
- ... clients of a needle exchange program were up to eight times less likely to contract hepatitis B and C than non-client intravenous drug users.(Holland n.p.) Reducing the spread of HIV and other viruses will save the world billions of dollars per year. Needle exchange programs are an extremely cost effective way to fight AIDS. By 1994, 125,000 people had developed AIDS as a result of injecting drugs ... increased frequency of IV drug use with all its concomitant social and medical consequences, and the number of IV drug users might increase" (Godalski 1). Although most studies show a decrease in new HIV/AIDS viruses, the latest data from Canada shows that needle exchanges have not "reduced the incidence of AIDS" (Wright 1), but in fact, it increased 1.7 %. In the United States, federal funding has been banned from ...
- 164: Antibiotics
- ... are chemical substances produced by various species of microorganisms and other living systems that are capable in small concentrations of inhibiting the growth of or killing bacteria and other microorganisms. These organisms can be bacteria, viruses, fungi, or animals called protozoa. A particular group of these agents is made up of drugs called antibiotics, from the Greek word anti ("against") and bios ("life"). Some antibiotics are produced from living organisms such ... the feed of animals. Chickens and beef cattle, for example, can be fed with these additives for better weight gains and to speed their growth. Current work in antibiotics is largely in the area of viruses. Although some antivirals are available, most have toxic effects so severe that they can be used only in life-threatening diseases where the negative effects are the lesser danger. Preliminary studies, however, are reporting success ...
- 165: The Communications Decency Act
- ... U.S. Copyright Act." (111) This "intellectual property" is defined to include computer software. (Cavazos 111) Software piracy is very widespread and rampant, and was even before the Internet became popular. The spread of Computer Viruses has been advanced by the popularity of the Internet. "A virus program is the result of someone developing a mischievous program that replicates itself, much like the living organism for which it is named." (Cavazos 114) Cyberspace allows for the rapid transfer and downloading of software over the entire world, this includes viruses. If a file has been corrupted before you download it, you are infecting your system. If you then give any software in any medium to any other user you run the risk of spreading the ...
- 166: Computer Crime In The 1990's
- ... around the world. On the net they say bits have no boundaries this means a hacker half way around the world can steal passwords and credit card numbers, break into computer systems and plant crippling viruses as easily as if they were just around the corner. The global network allows hackers to reach out and rob distant people with lightning speed. If cyberspace is a type of community, a giant neighborhood ... veterans and law enforcement agencies to radical crimes include: Computer Network Break-Ins Using software tools installed on a computer in a remote location, hackers can break into any computer systems to steal data, plant viruses or trojan horses, or work mischief of a less serious sort by changing user names or passwords. Network intrusions have been made illegal by the U.S. federal government, but detection and enforcement are difficult ...
- 167: Computer Crime: A Increasing Problem
- ... pp. 19. 2 Curtis E.A. Karnow, Recombinant Culture: Crime In The Digital Network. (Speech, Defcon II, Los Vegas), 1994. 3 S. Zuboff, In the Age of the Smart Machine, New York; 1992.Michael Gemignani, Viruses And Criminal Law. Reprinted in Lance Hoffman, Rogue Programs: Viruses, Worms and Trojan Horses, New York, 1990.4 Lauren Wiener, Digital Woes, 1993.5 John Perry Barlow, "The Economy of Ideas", Wired, March 1994.6 Martin Sprouse, "Sabotage in the American Workplace: Anecdotes of Dissatisfaction ...
- 168: Tom Clancy's Genius
- ... has even reached home to touch children and adults alike when the computer ceases to perfom as expected and even freezes up. The particular crash that disables the economy is quite commonly called a virus. Viruses effect Americans almost everyday in ways they might not even recognize. One of the most publicized viruses is the Michelangelo Virus. This virus attacks any infected computer booted up on March 6, the birthday of 16th century painter Michelangelo. It is obvious how the threat of a virus keeps readers noses in ...
- 169: Ebola Virus
- Ebola Virus With a ninety percent mortality rate, high mutation capability, and opportunities for genetic re-assortment Ebola Zaire is one of the most deadly and unforgiving viruses in the known world. A new family of viruses termed filoviruses, was first discovered in 1967 Marburg W. Germany. Ebola Zaire was first isolated in 1976 at Center of Disease Control, Porton Down in the UK, and at the Institute for Tropical Diseases in ...
- 170: Integrated Pest Management
- ... Japanese beetle, have been controlled by introducing their predators and parasites. Wasps that prey on fruit-boring insect larvae are now being commercially bred and released in California orchards. The many hundreds of species of viruses, bacteria, protozoa, fungi, and nematodes that parasitize pest insects and weeds are now being investigated as selective control agents. Another area of biological control is breeding host plants to be pest resistant, making them less ...
Search results 161 - 170 of 291 matching essays
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