| Papers [1-16] of 100 :: [Page 1 of 7] | | Go to page : 1 2 3 4 5 6 7 —> | Search results on "SPECIES RADIATION": |
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Species Radiation, 2000.
The causes and effects of evolutionary abundance in certain geographical areas in certain eras. Includes specialization, adaptation, variations and theories.
1,575 words (approx. 6.3 pages), 7 sources, AU$ 88.95
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From the Paper
"Evolution is a process of change and development as organisms adapt to their environment and to changing circumstance through time. A variety of mechanisms have been identified as being involved in the process of evolution. This process does not take place in a steady and even manner, and eras of massive change have been identified in the fossil record during which a process called radiation has taken place, producing many new species and so many changes in a given population. Such a sudden and massive expansion of species has been identified in different parts of the world, such as the rapid growth in diversity of cichild fish in Lake Victoria in eastern Africa, where more than 500 species have evolved over the last 12,000 years. Scientists have sought to discover why such radiations occur.
Darwin explained the process of specialization and related..."
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Radiation Safety, 2004.
This paper discusses the uses of radiation and safety measures that can be taken to protect from overexposure.
3,080 words (approx. 12.3 pages), 10 sources, MLA, AU$ 143.95
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Abstract
This paper explains that it is next to impossible to avoid sources of natural radiation in our everyday life, but precautions can be taken to maintain distance from local sources of radiation and to use distance, time, and radiation-shielding as protection. The author points out that radiation is not responsible for the assumed mechanism of carcinogenesis caused by the exposure to magnetic fields. The paper relates that the nuclear industry and many other sources of radioactivity are used in an enormous range of industrial processes, such as industrial radiography, thickness gauges, smoke alarms, and medical diagnosis and treatment.
Table of Contents
Types and Sources of Ionising Radiation
The Effect of Radiation on the Body
Detecting Radiation
Regulating Body Standards and the Workplace
Ionizing Radiation
Contamination
Stochastic Effects
Deterministic Effects
Monitoring Radiation Exposure
Radiation Accidents
Types of Radiation Accident
The Food Industry Uses Radiation
From the Paper
"Ionising radiation does not accumulate in our body, but science proves that the radiation effects are evident from exposure to large amounts of radiation, as in sunburns from too much exposure to strong sunlight. Radiation carries energy that has a damaging effect on the living cells of living things and can either kill them or change their structure and function to inhibit correct functioning but this would take large doses to kill a good number of cells to cause death. Radiation dose would have to be several thousand times bigger than the dose received annually from the environment to cause death. Death would occur if the person were exposed more over a year. For example, exposure to sunlight over a year gives one a suntan, but one-day exposure of sunbaking could cause death by sunstroke."
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Endangered Species Act, 2006.
This paper discusses the Endangered Species Act of 1973.
2,954 words (approx. 11.8 pages), 10 sources, MLA, AU$ 139.95
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Abstract
In this article, the writer looks at the Endangered Species Act of 1973 (ESA) that was designed to protect plant and animal species that were - and are - threatened by extinction and to provide punitive measures for persons and organizations that violate the Act. This paper focuses on just the animals that are endangered (not those on the "threatened" list), not the plants, although there are numerous plant species listed as endangered and thousands of species of plants already extinct. The writer looks at the animals this act concerns and discusses the proposed legislation. The writer discusses challenges and complications related to the Act.
Contents:
Introduction
Animals Placed on the Endangered Species List
Removed from the Endangered Species List
Legislation Proposed will Radically Change the ESA
Grizzly Bears in Yellowstone Park
Cut Throat Trout Numbers Shrinking in Yellowstone Park
Florida Home Builders Association Sues
Florida Native Americans Sue Interior Secretary Gale Norton
International Marine Mammal Project
Marketing Endangered Species and Wildlife Conservation
From the Paper
"One of the animals that may soon come off the ESA's list in a certain, prescribed area, is the Grizzly Bear. The Department of Interior (DOI) (which runs FWS) has decided to remove the 600 or so Grizzlies "in and near Yellowstone National Park" from the federal endangered list. Why? It would put protection of the bears in the hands of state wildlife officials in Montana, Wyoming, and Idaho, according to a USA Today article.
The other reason for taking the Grizzly off the federal protected list is that the bears' population in the Yellowstone area has increased from around 200 in 1975, to about 600 today. The Grizzly once number around 50,000 throughout the western United States and now there are about 1,200 remaining. They live primarily in four regions: Yellowstone, Glacier National Park (Montana), the Selkirk Mountains (Idaho), and in the Cabinet Mountains in Montana. The Grizzlies in those other three areas will remain on the ESA list of protected animals."
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Protection of Endangered Species, 2006.
A look at how the human population is endangering the lives of numerous plant and animal species and what will happen if we don't protect those endangered species.
900 words (approx. 3.6 pages), 1 source, AU$ 56.95
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Abstract
Endangered Species are plants and animals that will be extinct soon and will possibly be never seen again in life. The reason why endangered species and habitats become extinct are primarily a result of an overpopulation of human beings who force the plants and animals out of their natural habitat, leaving them little room to grow or reproduce. This leads to scarcity and, eventually, extinction. This paper discusses how humans are threatening the natural habitat of animals and plants and the ultimate consequence of that threat.
From the Paper
"In other words, many goods and services from other countries are being exported to the United States in order to gather revenue for that country. Whether the products are fish or furniture--even if that countries ecosystem is in jeopardy--the wealth continues to flourish in order to keep the humans living. Another example, "In Florida, exotic plants, such as hydrilla (Hydrilla verticillata), water hyacinth (Eichhornia crassipes), and water lettuce (Pistia straiotes), are altering fish and other aquatic animal species, choking waterways, altering nutrient cycles, and reducing recreational use of rivers and lakes" (Liebold 4)."
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Dental Radiation, 2008.
A discussion on whether radiation is safe in dental offices.
1,465 words (approx. 5.9 pages), 5 sources, MLA, AU$ 77.95
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Abstract
The purpose of this research paper is to answer the question: "Is radiation safe in the dental office?" It hypothesizes that despite predominate thinking by dentists, cumulative radiation over time, even exposure to dental radiation in small amounts, can lead to health problems and significant health and safety issues for the patient and for personnel working in the dental office. This is especially true of women during their child bearing years. It also investigates whether information or empirical studies exist that quantify the amount of radiation people are exposed to for dental procedures and whether this level is safe to the patient or the people that may be around or inside of the room where the radiation is occurring.
Outline:
Introduction
Analysis of Dental Practices
Conclusion
From the Paper
"The proposition or purpose of radiography in the dental office is to provide dentists with diagnostic information about the bones in the mouth or teeth, while keeping radiation levels as low as possible. Dentists claim that X-ray examinations are ordinary examinations performed in the office with the purpose of maintaining a patient's dental care. There is evidence however that cumulative X-ray exposure may prove detrimental, so why would dentists continue to use it? I propose the use or over use of X-rays is partly a result of the lack of information about the cumulative effects of dental radiation. Dentists are as ignorant as patients in many cases when it comes to the safety of radiological exams. Most are likely taught at the university level that X-rays should be done annually or as often as necessary to promote proper health and detect early damage to the teeth."
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Radiation and its Effects on Memory, 2008.
A comprehensive account on radiation as a form of treatment for small cell lung cancer and its effect on memory.
10,203 words (approx. 40.8 pages), 35 sources, APA, AU$ 326.95
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Abstract
The paper deals with small cell lung cancer and the problem with regard to radiation and memory loss. The paper states that this form of cancer is prone to brain metastases. The paper confirms that prophylactic cranial irradiation is a controversial method of radiation that has shown to have positive outcomes in small cell lung cancer patients. However, little is known about the effects of radiation on the brain and especially on long-term cognitive and memory loss. The paper, in referring to various studies, concludes that the research is compounded by the large number of variables that need to be taken into account in ascertaining the effects of the process of radiation.
Outline:
Introduction
Prolegomena: Overview and Background
The Brain, Memory and Radiation Treatment
Summation and Conclusion
From the Paper
" Lung cancer is one of the most prevalent forms of cancer that affects both men and women in the United States and the world. As figure 1 above illustrates, the number of deaths from lung cancer in the United States far exceeds other common forms of cancer. There are numerous statistics that indicate the increased risks of lung cancer and small cell lung cancer. Figure 2 below illustrates a projection of morality rates in various countries over a ten your period of time. This again clearly indicates the importance of research into lung cancer and particularly the more severe form of small cell lung cancer."
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The Concept of Species, 2006.
An examination of ways to define the concept of species.
804 words (approx. 3.2 pages), 2 sources, MLA, AU$ 45.95
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Abstract
In this report the author looks at ways to define the concept of species. He considers that in a biological sense, it is a difficult task, considering that so many different organisms and variations of organisms exist. This author looks at the concept of species as having been pursued since the time of Aristotle and how it has consistently been revised, scrutinized, rejected and accepted by different disciplines and schools since the birth of western science. He then proceeds to suggest ways of defining species whether it be as an organism that can reproduce or the essential concept. The paper concludes with the summation that whether or not species is a convention created by humans, it has become an integral and fundamental unit of science.
From the Paper
"If two individuals in nature can produce fertile offspring, they are of the same species, and the opposite is true if offspring are produced but are infertile. The interbreeding of a horse and donkey is an excellent example of reproductive isolation. The individuals can successfully reproduce, but the offspring that is produced is not fertile. Therefore, the horse and donkey are not of the same species. With this, and the concept of reproductive isolation in mind, a species can then be defined as a group of reproductively isolated individuals. However there is a group of organisms to which this does not properly apply; those that reproduce asexually."
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The Endangered Species Act, 2007.
An overview of the the Endangered Species Act including a discussion on why it has been effective and recent attempts to undermine it.
2,275 words (approx. 9.1 pages), 16 sources, APA, AU$ 112.95
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Abstract
The Endangered Species Act is one of the most ubiquitous examples of environmental policy. Under the aegis of the Fish And Wildlife Service, the act lays out protocols for listing species, the protections that species have, and methods of enforcement for violations of the law. This paper deals with the details, as well as the history of the Act and recent attempts by a political appointee from the Department of Interior to undermine it.
Outline:
Introduction
Purposes of the Act
Protocols For Listing
Major Exceptions to the Rule
Command and Control
Success Stories
Recent Attempts to Undermine
Conclusion
From the Paper
"One of the most far reaching natural resources policy, as well as one of the most ubiquitous, is the Endangered Species Act (Title 16, Chapter 35, Section 1531 of the United States Code). This was created in response to a finding by congress that various fish, wildlife, and plants have gone extinct due to human actions, and other species, which have many values in terms of science and aesthetics, are being threatened by human activity (Cornell University Law School 2007), and that in its most basic form, states that no person may "harm harass, pursue, hunt, shoot, wound, kill, trap, capture, or collect any threatened or endangered species" (U. S.Department Of Agriculture 2007). This act has been amended several times throughout the years, and there have currently been attempts to make it harder to list a species, though recently, some rulings have been reversed."
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| Essay # 24424 |
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Cloning Endangered Species, 2004.
A look at the possibility of using genetic cloning to preserve endangered species.
1,518 words (approx. 6.1 pages), 6 sources, MLA, AU$ 80.95
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Abstract
This paper examines how, according to the World Wildlife Fund, it is estimated that about 20% of all present-day species could be extinct by the year 2025, and while conservation efforts under the Endangered Species Act are aimed at captive breeding programs, reintroduction, and habitat management, new methods of species preservation must be supported. It looks at how scientific methods like genetic cloning through interspecies transfer to produce viable young should be considered in the overall endangered animal protection plan and how the broad sense of the term ?risk?, as applied to limiting the use of presently endangered individuals to save their entire species, needs to be reconsidered and explained to allow advances in scientific technology that may possibly recover entire animal populations.
From the Paper
"Cloning technology requires a mother to act as a surrogate. While conservation biologists may be in support of, or on the fence about, cloning as a method of endangered-species conservation, the concept of using either a wild or captive endangered female of the same species to assist in reproduction or act as a surrogate mother is unfavorable as the risks may prove too great. To circumvent the risk of adversely affecting the present-day numbers of a species by using a surrogate of that species, or even to reintroduce a species that has been identified as being extinct, scientists have delved into utilizing methods of interspecies cloning to reproduce an animal using a surrogate mother of another, less endangered animal."
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Endangered Aquatic Species, 2008.
This paper focuses on the endangered aquatic species known as the shortnose sturgeon.
814 words (approx. 3.3 pages), 7 sources, MLA, AU$ 45.95
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Abstract
The paper discusses how the shortnose sturgeon is among the federally endangered aquatic species, which are protected by federal government
The paper relates that the shortnose sturgeon is regarded as one of the most successful recoveries of endangered species and will continue to be protected to the measure necessary to conserve its habitat and population. The paper adds that this will undoubtedly strengthen local economies and influence more protection measures of other declining aquatic species.
From the Paper
"The Shortnose Sturgeon, formally referred to as Acipenser brevirostrum, is among the federally endangered aquatic species, which are protected by federal government (SOCNFWR, 2007). The Shortnose Sturgeon is commonly found along the Connecticut River from Turners Falls, Massachusetts to the Long Island Sound. It is the smallest of three sturgeon species known to inhabit North America. These fish are known for their long life spans - known to exceed 65 years for females, and nearly 30 for males (Dadswell, 1984)."
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UV Radiation, 2001.
This paper looks at the positive side of ultraviolet radiation.
1,215 words (approx. 4.9 pages), 5 sources, APA, AU$ 66.95
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Abstract
This paper discusses the many positive aspects of UV radiation. The author examines the way ultraviolet light is commonly used, defines UV light, its dangers and how it's used in fluorescent lighting. The paper also describes how UV radiation is frequently used in water purification plants, destroying harmful bacteria.
From the Paper
"UV radiation is what is responsible for causing human skin to tan. Unlike x rays, ultraviolet radiation has a low power of penetration, so its only direct effects on the human body occur on the skin?s surface and include sunburn, suntan, aging, and carcinogenic changes. Most of us know that ?sunburn? is not simply a metaphor but is in fact like burns from other forms of radiation and can include symptoms ranging from redness and tenderness to blisters, swelling, seepage of fluid, and sloughing of the outer skin. Tanning ? while it is never healthy, as we know now, is simply a natural body defense that uses melanin to help protect the skin from further injury from UV radiation."
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Endangered Species Protection: Priority or Problem?, 2001.
This paper discusses the issues of endangered species protection.
3,306 words (approx. 13.2 pages), 12 sources, APA, AU$ 150.95
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Abstract
This paper looks at the nation?s existing biodiversity in a species-centered approach to environmental protection. It examines the costs it imposes on society and looks at the stakeholders involved in species protection issues include farming and industrial groups, environmentalists, and politicians and policy-makers.
From the Paper
"In today?s society, it would not be hard to convince the average U.S. citizen that saving Earth?s endangered species from extinction should be a national priority. Thanks to the press, over the years, most people seem to have gained a general ethical and scientific understanding of the value of biological diversity. This biological diversity, or biodiversity, is a concept that emphasizes the fragile nature of the genetic and social interrelationships of the many varieties of plant and animal life that can be found in any given ecosystem (DiSilvestro, 1993). If one species disappears, the entire ecosystem may be affected by the loss, in a possibly disastrous chain reaction that modern science does not currently have the capability to fully predict the outcome of."
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Endangered Species, 2002.
An essay about the American Endangered Species Act of 1973.
1,615 words (approx. 6.5 pages), 13 sources, MLA, AU$ 83.95
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Abstract
This paper explains the reasons why American congress felt the need to pass the Endangered Species Act of 1973 in a bid to stop the extinction of certain species of American flora and fauna. The paper studies the act, whether it has been effective and areas where the law can be improved.
From the Paper
"Many years ago there was a bird, the passenger pigeon that was very plentiful. When the flocks would fly, they covered the sky and nearly blocked out the sun. People killed them, not for food, but for fun. They thought the bird would be here forever. The last passenger pigeon died in a zoo in 1914. Black bears were abundant in New Jersey. In the mid 1970s, they were nearly driven to extinction. Laws were enacted and the bear has made a comeback. When man has taken actions that harm the planet and its balance of nature, the government must take action. Such is the case with the extinction of plants and animals. Why should they go to extinction?"
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Cell Phone Radiation, 2006.
A discussion regarding the dangers of cell phone radiation.
1,547 words (approx. 6.2 pages), 5 sources, MLA, AU$ 80.95
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Abstract
This paper takes a look at the danger of the radiation emitted from a cell phone in use. According to the paper, some of the potential health hazards that may evolve from cell phone use include noise in the ear, memory loss, headaches, malignant brain tumors and DNA damage.
Outline:
I.The Silent Enemy
Cover-up?
Radiation
II.Concerns for All Ages
In Light on Concerns
III. The Big Question
The Privilege to Listen
From the Paper
"Even though cell phones and fortune cookies may not initially appear to have a common thread, the concept that connects them is that those who market cell phones, in a similar sense, do not usually consider what happens to those who purchase and use cell phones. In the study completed by Salford et al funded by a grant from the Swedish Council for Work Life Research. Completed during 2002, the authors examine potential risks of radio-frequency electromagnetic fields for the human body. Their previous studies posit ". . . weak pulsed microwaves give rise to a significant leakage of albumin through the blood-brain barrier."
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Preserving the Species, 2004.
An argument in favor of preservation of species.
1,125 words (approx. 4.5 pages), 5 sources, APA, AU$ 62.95
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Abstract
This paper presents an argument favoring the preservation of species, from a philosophical viewpoint. The position argued posits value on individual members of species in a manner that merits a moral duty to protect them.
From the Paper
"According to Rolston, it is admittedly difficult to pinpoint precisely what a species is and there may be no single quintessential way to define species. Despite the complexities involved in fashioning an absolute definition of species for the purposes of this analysis, species will be defined according to the biological definition. Species are groups of interbreeding natural populations that are reproductively isolated from other such groups. Perhaps even more complex than a definition of species is the answer to why and under what circumstances we should preserve endangered..."
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