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Permeable Reactive Barriers, 2008.
A review of research and innovative technologies that have evolved to assist the removal of heavy metal from groundwater.
1,204 words (approx. 4.8 pages), 4 sources, APA, $ 41.95
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Abstract
The paper notes that heavy metals pose devastating health risks to humans. The paper comments that methods for removing heavy metals from water has become the focus of the development of remediation technologies and that permeable reactive barriers (PRBs) are the latest technology to be investigated for a multitude of site applications. This technology appeals to the "green" side of groundwater remediation and represents the newest attempts at large scale, low-cost technology for heavy metals and a variety of other contaminants. PRB's are in situ methods for purifying ground water that has been contaminated with a variety of substances. The paper discusses the introduction of this system, its applications, advantages and disadvantages.
Outline:
Introduction
Case Studies
Advantages/Disadvantages
Issues That Could be Encountered with Full-Scale Implementation
Cost Analysis
Alternatives to Technology
Conclusion and Recommendations
From the Paper
"Another key advantage is that it is highly customizable to the needs of the site. The configuration of the membrane can be modified to fit the hydrogeology of the site. The ability to customize PRBs makes it suitable for a number of sites where other technologies may be inappropriate. One of the key disadvantages of the technology is that it can take a long time before a reduction in contaminant will be noticed. This is particularly true where the natural water flow of the site is slow. There may be some species that are not cleaned by the system. The system must be maintained and repaired as needed. The technology is so new that no one knows how long the barrier will last before it has to be replaced."
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Deloro Mine, 2008.
A review of current and future arsenic remediation technologies at the Deloro mine.
4,520 words (approx. 18.1 pages), 12 sources, APA, $ 117.95
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Abstract
This paper discusses the new methods that are currently being utilized that may further assist in the reduction of post-treatment effluent to a level that would not be considered hazardous to humans. The paper focuses on exploring new technologies that may help to reduce the effluent levels that are currently being introduced into the Moira River. The paper further explores new technologies that may be applicable to the reduction of arsenic at the Deloro Mine site.
Outline:
Commonly Used Remediation Techniques
A Review of New and Innovative Technologies
Methodology
Results
Discussion
Which Technology is Currently Being used to Treat Arsenic at the Deloro Mines?
Conclusion
From the Paper
"As one can see, there are a number of treatment options available for the removal of arsenic in groundwater. There is no single best solution that will result in maximum results at all sites. These technologies are often combined to meet the needs of each individual situation. Treatment at the Deloro Mine uses chemical coagulation followed by sedimentation to process the effluent that will eventually be dumped back into the Moira River.The newest innovation in arsenic treatment was announced February 8, 2008 by AdEdge Technologies. This company has released a specialty adsorbent filtration system specifically designed to remove arsenic from water (Thern Inc., 2008). This technology has been awarded a grant for testing at three US sites. After testing is complete, this technology will be ready to market. This is the first filtration system specifically designed for arsenic, rather than general contaminants or metals. "
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Natural Disasters, 2008.
A comparative research of the natural disasters in South Africa and New Orleans.
2,154 words (approx. 8.6 pages), 6 sources, APA, $ 67.95
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Abstract
The paper compares the natural disasters of New Orleans and South Africa in terms of survival statistics in relation to their effect on children in terms of symptomatic trauma, interventions and resources in rebuilding the urban places after the disaster. The paper examines both South Africa and New Orleans to analyze what could have been done to mitigate some of the damage inflicted in these two instances and further to envision what might be done in retrospect to strengthen the response of humanitarian efforts at times of natural disasters. The paper includes a map and tables.
Outline:
Objective
Introduction
Disaster Assessment of South Africa & New Orleans
Flooding Greatest Risk in South Africa and New Orleans
Findings of Risk Assessment
Disaster Mitigation Requires 'Spirit of the Law' Application
Summary and Conclusion
From the Paper
"Those most affected were individuals who lived in homes that were constructed poorly. Identification of areas and communities that were affected had no uniformity. The results show that some communities received relief while others did not. Relief agencies were not well represented insofar as informing these individuals of what relief they were entitled to with many failing to miss such relief funding as Social Security for water-damaged property replacement. The report states: "...In these communities, rain or flood-affected households managed their losses alone or, in the case of many farm-workers residing on farms, repaired their homes with the farmer's assistance."
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Alexander Humboldt, 2008.
A biography of the German geographer Alexander Humboldt and the influence he had on modern geographic theories.
3,348 words (approx. 13.4 pages), 10 sources, APA, $ 95.95
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Abstract
The paper discusses a study that researches and examines the German geographer, Alexander Humboldt. The paper by means of biographical literature, reviews the study of the contributions that Humboldt made to, as well as the influences that Humboldt has upon, modern geographical theory.
Outline:
Purpose of the Study
Introduction
Humboldt's Quest for the Tropics
Humboldt and Topographical Map Development
Humboldt Traveler, Naturalist, Geologist...
Summary and Conclusion
From the Paper
"The work entitled: "Scientific Findings of Alexander Von Humboldt's Expedition into the Spanish-American Tropics (1799-1804) From a Geographical Point of View" states: "Alexander von Humboldt's expedition from 1799 till 1804 to the "equinoctial regions of the new world" led through Venezuela, Cuba, Colombia, Ecuador, Peru, and Mexico. In Europe, an increased knowledge of the "New World" was connected with the privately funded journey, which served purely scientific purposes and had nothing to do with the exploration and exploitation of natural resources. Besides the research results, which were based on new measuring methods and the quantitative ascertainment of scientific basics, the journey also made possible detailed descriptions in matters of regional studies including social, socio-economic, political, and economic-geographic circumstances, which were based on empirical field studies."
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Napa Valley for Wines, 2008.
A geological discussion on Napa Valley for the production of wines.
2,340 words (approx. 9.4 pages), 12 sources, APA, $ 71.95
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Abstract
This paper studies the geological features of Napa Valley in California in regards to grape-growing conditions, for wine making. It gives a short history of the natural occurrences ranging from volcanic eruptions to plate tectonics that form Napa Valley's foundation today and explains why Napa Valley is ideally suited for the production of quality wines.
Outline:
Geology and soil
Bedrock
Topography
Climate
Conclusion
From the Paper
"Naturally, the topography of Napa Valley has a significant influence on the region's climate, which can vary significantly by location, season, and time of day. As mentioned earlier, the coastal Mayacamas mountains affect the climate in other areas of Napa Valley. The Mayacamas can be cool and wet, receiving the chilling winds and moisture from the Pacific. On the other hand, they block cool air and humidity from reaching the Vacas range, which is warmer and dryer as a result. In essence, Napa Valley serves as a buffer between the cool coastal regions of Northern California and the hotter Vacas range. It can grow high- and low-humidity grapes within miles of each other."
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Yucca Mountain, 2008.
An overview of the issues associated with the development of the Yucca Mountain nuclear waste project in Nevada.
1,892 words (approx. 7.6 pages), 6 sources, MLA, $ 60.95
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Abstract
The purpose of this paper is to introduce, discuss, and analyze the topic of nuclear waste. The paper specifically discusses the Yucca Mountain nuclear waste project in Nevada and the opposition to the development of this project.
From the Paper
"Nuclear waste has been a growing problem since the spread of nuclear power plants in the 1950s and 1960s. The power plants rely on radioactive rods to generate nuclear power, and when the rods are spent, they are still highly radioactive, and must be stored somewhere. Currently, the spent rods are stored around the country in many different storage facilities, but for safety, the government wants to consolidate the storage in a remote facility built especially to handle large amounts of nuclear waste. While the idea sounds plausible, there have been numerous problems with the site chosen for the storage facility since its inception. "
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Water Issues in Florida, 2008.
This paper examines the water management issues in Florida.
1,514 words (approx. 6.1 pages), 14 sources, MLA, $ 49.95
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Abstract
The paper explains how the hydrologic cycle is fundamental for the overall health of the environment and the quality of the earth's water supplies. The paper then discusses the situation in Florida and emphasizes the importance of taking steps to conserve the water resources that are available, protecting the quality of Florida's aquifers and practicing good waste management techniques. The paper provides a glossary that contains key definitions for some of the terms important in the study of water management issues both in Florida and throughout the world.
Outline:
Introduction: The Hydrologic Cycle
Issues in Water Management
The Situation and Circumstances in Florida
Steps to Better Manage the Water Supply
Glossary
From the Paper
"The hydrologic cycle is the process by which water moves through the environment. Surface water evaporates or transpires from surface collections and plants to condense in the atmosphere as clouds. Those clouds release precipitation that falls back to the Earth. Some of that water percolates through the surface and charges underground deposits of water. The hydrologic cycle consists of the passage of water through the environment in different states in response to environmental conditions. The hydrologic cycle includes processes such as storage as ice/snow, precipitation, infiltration, ground water storage, ocean storage, evaporation, condensation, evapo-transpiration, surface runoff, springs, and sublimation (Cervone, "Florida Aquifers"; "Hydrologic Cycle"; Perlman)."
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Climate Change, 2008.
An illustration of science and skepticism when referring to climate change modeling.
1,761 words (approx. 7.0 pages), 5 sources, MLA, $ 56.95
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Abstract
The paper analyzes the positions of two researchers who are opposed on their views of climate change. The paper specifically considers their positions in light of several significant differences the two have, primarily on the issue of computer modeling. The paper notes that S. Fred Singer, an atmospheric physicist at George Mason University, when referring to global warming, argues that "the scenarios are alarmist, computer models reflect real gaps in climate knowledge, and future warming will be inconsequential or modest at most". The paper comments that the opposer is Tom Wigley, a climatologist and senior scientist at the National Center for Atmospheric Research who commands a wide array of evidence to support his claims regarding climate change. The paper considers the position of each on the issues of computer modeling and the potential impact of climate change, drawing on outside research to demonstrate which position has the greater likelihood of being correct.
From the Paper
"The issue is that when we are dealing with models that work on systemic averages, there is a certain degree of uncertainty and ambiguity built into the model itself. Climate change skeptics like Singer immediately prey upon this uncertainty. He argues that the models are too ambiguous and seemingly contra-dictory to warrant our support. Different models produced by different scientists to account for different data sets cannot even necessarily agree on the same things, therefore the models cannot be trusted. Singer even goes so far as to im-ply that we cannot trust the scientists who construct these models because they could tweak the models to produce the results they want, seemingly in order to impress their climate change colleagues and ensure funding for other projects. Of course, such a claim borders on slanderous and cannot be rightfully considered a mark in favor of Singer's position. Wigley responds generally, "Cooking the books would be a concern if that was what scientists were apt to do. But I don't think scientists generally behave that way". In fact, if we accept that scientists will do anything to ensure their next paycheck, then the integrity of the scientific process is lost and claims by all scientists--Singer in-cluded--cannot be trusted."
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Chromium Studies, 2008.
A report on remediation chemistry at chromium contaminated sites.
1,510 words (approx. 6.0 pages), 6 sources, MLA, $ 49.95
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Abstract
The paper evaluates some of the predominant methods of remediation of chromium contaminated sites. The paper notes that the methods employed are divided into two types: removal from the soil (in which various chemical extractants are used to flush chromium from the site) or immobilization in the soil (in which reducing agents are used to break down dangerous forms of chromium). The paper examines several of the more promising methods of remediation currently being employed, and concludes with a discussion and analysis of the methods in terms of their real-world applicability.
Outline:
Introduction
Remediation Methods
Discussion
From the Paper
" Chromium contamination, especially contamination of Cr(VI), is a significant environmental hazard. It will have a significant effect on the quality of the soil and the quality of the groundwater. Because of this, it is very important that effective and practical remediation techniques be developed that can chemically remove or immobilize the presence of chromium at the site. After briefly examining some of the methods currently being developed, which can be roughly divided into extractive versus immobilization techniques, there seems to be demonstrable promise in the possibility of cleaning up chromium-contaminated sites."
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