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Articles 58561 - 58590 of 65202
Full-Text Articles in Entire DC Network
Determination Of Bioavailable Contaminants In The Lower Missouri River Following The Flood Of 1993, Jimmie Petty, Barry Poulton, Colette Charbonneau, James Huckins, Susan Jones, Jennifer Cameron, Harry Prest
Determination Of Bioavailable Contaminants In The Lower Missouri River Following The Flood Of 1993, Jimmie Petty, Barry Poulton, Colette Charbonneau, James Huckins, Susan Jones, Jennifer Cameron, Harry Prest
United States Geological Survey: Staff Publications
The semipermeable membrane device (SPMD) technology was employed to determine the presence of bioavailable organochlorine pesticides (OCs), polychlorinated biphenyls (PCBs), and polyaromatic hydrocarbons (PAHs) in the water of the main stem of the lower Missouri River and three of its tributaries. The SPMDs were deployed in 1994 following the extensive flood of 1993. Specifically, the SPMDs were deployed for 28 days at Wilson State Park, IA; Nebraska City, NE; Parkville, MO; the Kansas River in Kansas City, KS; Napoleon, MO; the Grand River; Glasgow, MO; the Missouri River upstream from the confluence of the Gasconade River; the Gasconade River; and …
Occurrence Of Pesticides In Shallow Groundwater Of The United States: Initial Results From The National Water-Quality Assessment Program, Dana Kolpin, Jake Barbash, Robert Gilliom
Occurrence Of Pesticides In Shallow Groundwater Of The United States: Initial Results From The National Water-Quality Assessment Program, Dana Kolpin, Jake Barbash, Robert Gilliom
United States Geological Survey: Staff Publications
The first phase of intensive data collection for the National Water-Quality Assessment (NAWQA) was completed during 1993-1995 in 20 major hydrologic basins of the United States. Groundwater land-use studies, designed to sample recently recharged groundwater (generally within 10 years) beneath specific land-use and hydrogeologic settings, are a major component of the groundwater quality assessment for NAWQA. Pesticide results from the 41 land use studies conducted during 1993-1995 indicate that pesticides were commonly detected in shallow groundwater, having been found at 54.4% of the 1034 sites sampled in agricultural and urban settings across the United States. Pesticide concentrations were generally low, …
Zinc Phosphide Residues In Gray-Tailed Voles (Microtus Canicaudus) Fed Fixed Particles Of A 2% Grain Bait, R. T. Sterner, D. A. Goldade, R. E. Mauldin
Zinc Phosphide Residues In Gray-Tailed Voles (Microtus Canicaudus) Fed Fixed Particles Of A 2% Grain Bait, R. T. Sterner, D. A. Goldade, R. E. Mauldin
United States Department of Agriculture Wildlife Services: Staff Publications
This study measured depelted-carcass residues of zinc phosphide (Zn3P2, CAS # 1314-84-7) in 8 (4 males and 4 females) gray-tailed voles (Microtus canicaudus). Six (3 males and 3 females) voles were confined individually in 1.89 dkl (5 gal) plastic pails that contained 5,2% Zn3P2 steamrolled- oat (SRO) groats; 2 voles (1 male and 1 female) served as analytical (unbaited) controls. Four test voles (3 males and 1female) died within 7.5 h after bait exposure; whereas, 2 test voles showed no signs of toxicosis and were euthanized 7.0 h after bait exposure. …
A Comparison Of Advanced Time Series Models For Environmental Dependent Stock Recruitment Of The Western Rock Lobster, Saarah A. Farag
A Comparison Of Advanced Time Series Models For Environmental Dependent Stock Recruitment Of The Western Rock Lobster, Saarah A. Farag
Theses: Doctorates and Masters
Time series models have been applied in many areas including economics, stuck recruitment and the environment. Most environmental time series involve highly correlated dependent variables, which makes it difficult to apply conventional regression analysis, Traditionally, regression analysis has been applied to the environmental dependent stock and recruitment relationships for crustacean species in Western Australian fisheries. Alternative models, such as transfer function models and state space models have the potential to provide unproved forecasts for these types of data sets. This dissertation will explore the application of regression models, transfer function models, and state space models to modelling the puerulus stage …
Parametric Software Project Estimating: An Analysis Of Current Practice, Stuart Hope
Parametric Software Project Estimating: An Analysis Of Current Practice, Stuart Hope
Theses: Doctorates and Masters
As society and the world economy moves into the second millennium. the service industries involving knowledge workers will continue to increase. Software is the enabling technology that is driving the knowledge industry. As the development of software is mostly a design process, where new artefacts are conceived and built, the prediction of outcomes in the process is fraught with difficulties. Software project estimating is one of the essential Software Engineering techniques that will enable the rationalisation of decision-making regarding software development. Estimates that are more accurate will increase the probability of success and lower the risk. This thesis analyses the …
Performing Cooperative Work And Conferencing On An Intranet Using Java, Thaveeporn Limpanyalers
Performing Cooperative Work And Conferencing On An Intranet Using Java, Thaveeporn Limpanyalers
Theses: Doctorates and Masters
The process of organising, preparing and conducting a meeting is a time consuming one. Additionally, geographic separation compounds the amount of effort required. Within this study, an electronic conferencing system in an Intranet environment is designed and implemented, thus enabling employees in the same organisation to meet up electronically without the dual constraints of time and space. Specifically, the study investigates incorporation of facial expressions and an ongoing polling system. The results demonstrate that a presence of facial expressions helps users to better engage in on-line discussion and that users find an ongoing poll to be useful in determining direction …
Bioremediation Of Soil Contaminated With Explosives, Catherine A. Axtell
Bioremediation Of Soil Contaminated With Explosives, Catherine A. Axtell
Dissertations and Theses @ UNI
Bioremediation of contaminated soil and water has been the topic of considerable research interest. White rot fungi have recently been proposed for use in biodegradation of explosives. The explosives, TNT, RDX and HMX are integral components of the manufacture of munitions. The wastes from the production of these and other explosives have been discharged into the surrounding environment resulting in contamination. Phanerochaete chrysosporium and strain F600, a proprietary white rot fungus developed by Mycotech Corporation, were studied with regard to their ability to degrade TNT, HMX and RDX in liquid cultures and in soil. Laboratory studies demonstrated that P. chrysosporium …
Contaminated Communities: A Video Documentary Of The Alberton, Montana Mixed-Chemical Spill And An Analysis Of How Its Effects On Toxics Victims Fits Into A Larger Contamination Framework From A Political Ecology Perspective, Lisa A. Mosca
Graduate Student Theses, Dissertations, & Professional Papers
The small rural mountain town of Alberton, MT located 32 miles west of Missoula, MT was the 1996 site of the largest contamination event in railroad history involving a mixture of chemicals. On April 11, 1996 a Montana Rail Link train derailed just west of the town of Alberton, leaking 130,000 pounds of chlorine gas, 17,000 of potassium cresylate (spent oil refinery waste), and 85 dry bulk pounds of sodium chlorate into the Alberton environment. Approximately 1000 people were evacuated from their homes, many for the seventeen day evacuation period that followed. The video documentary project that I embarked on …
The Potential Impact Of Marpol Annex Vi On The Design And Operation Of Oil Tankers, Pratomo Setyohadi
The Potential Impact Of Marpol Annex Vi On The Design And Operation Of Oil Tankers, Pratomo Setyohadi
World Maritime University Dissertations
No abstract provided.
Protection Of Bangladesh Waters Against Accidental Oil Pollution From Ships, Khondaker Md. Asaduzzaman
Protection Of Bangladesh Waters Against Accidental Oil Pollution From Ships, Khondaker Md. Asaduzzaman
World Maritime University Dissertations
Bangladesh, as being a flag, coastal and port state, has a genuine concern about the threat of oil pollution from marine transportation in its waters. However, her concern for accidental oil pollution from ships is not adequately matched by appropriate preventive and remedial measures. As a result, the country continues to be in an absolutely vulnerable position with respect to the dangers of oil pollution. This dissertation is a study of the need for and the ways of protecting the marine environment of Bangladesh from oil pollution incidents. The threats of accidental spills in Bangladesh waters are discussed and the …
Audit Of The Department Of Energy's Contracts With Envirocare Of Utah, Inc., U.S. Department Of Energy, Office Of Inspector General, Office Of Audit Services, Eastern Regional Audit Office
Audit Of The Department Of Energy's Contracts With Envirocare Of Utah, Inc., U.S. Department Of Energy, Office Of Inspector General, Office Of Audit Services, Eastern Regional Audit Office
All U.S. Government Documents (Utah Regional Depository)
The Department of Energy (Department) is responsible for protecting human health and the environment by providing an effective and efficient system that treats, stores, and disposes of Departmental waste. The Department disposes of some of its waste at Envirocare of Utah, Inc., (Envirocare) a commercial treatment and disposal facility in Clive, Utah. The audit objective was to determine whether the Department and its contractors were using the most favorable rates available for the disposal of waste at Envirocare.
We found that the Department's contractors did not always use the most favorable rates available. Although volume discounts were available under Departmentwide …
Development Of An Atmospheric Fluidized Bed Combustor (Afbc), William Orndorff
Development Of An Atmospheric Fluidized Bed Combustor (Afbc), William Orndorff
Masters Theses & Specialist Projects
The relatively recent interest in the U.S. in the development of atmospheric fluidized bed combustion (AFBC) has been preceded by two main factors. First of these is the ever present problem of acid rain and growing public support for cleaner burning fossil fuels. Second is the increasing demand on public landfills and subsequent need for burning of municipal solid waste. From these factors and their corresponding influences, Western Kentucky University has the impetus and has received the financial assistance necessary to build and develop a laboratory scale AFBC system. A brief history of the events leading to this development, as …
Full Issue, The Mcnair Team
Acknowledgements, The Mcnair Team
Acknowledgements, The Mcnair Team
McNair Scholars Research Journal
No abstract provided.
An Investigation Of Plume Rise From Titan Iv Rocket Launches, Joseph D. Brands
An Investigation Of Plume Rise From Titan Iv Rocket Launches, Joseph D. Brands
Theses and Dissertations
Space launches at Cape Canaveral Air Station (CCAS) and Vandenberg Air Force Base (vAFB) produce exhaust ground clouds from the solid rocket boosters and liquid hypergolic fuels containing several toxic substances. In order to estimate the health effects that would be imposed upon the public by scheduled launches, range safety officials rely on the Rocket Exhaust Effluent Diffusion Model to predict ground level concentrations of these substances. A drawback to the REEDM is its underprediction of the initial ground clouds stabilization height. This underprediction causes an overprediction of the ground level toxic substance concentrations. This thesis focused on increasing the …
The Migration Of Arsenic And Lead In Surface Sediments At Three Kids Mine Henderson, Nevada, Douglas Brian Sims
The Migration Of Arsenic And Lead In Surface Sediments At Three Kids Mine Henderson, Nevada, Douglas Brian Sims
Publications (WR)
This study focused on the distribution of arsenic and lead in surface sediments at Three Kids Mine in Henderson, Nevada. The mine site encompasses approximately 470 acres of desert and is situated above two developing communities (Lake Las Vegas and Calico Ridge) and the Las Vegas Valley's water source (Lake Mead). Transport of arsenic and lead appears to have occurred within a limited range in both the eastern and western washes on the eastern and western sides of Three Kids Mine. Concentrations of arsenic range between 20 mg/kg (ppm) and 1130 mg/kg and between 20 mg/kg and 8400 mg/kg for …
Water Current, Volume 29, No. 6, December 1997
Water Current, Volume 29, No. 6, December 1997
Water Current Newsletter
New Equipment Enhances Water Sciences Laboratory's Research Capabilities
From the Director: USGS/NIWR Cooperation, Joint Programming Increasing; NRI Budget Reductions
27th Water Conference Begins Three-Year Look at "Nebraska Water 2000"
Annual Seminar to Examine Interrelationship of Water, Native Grasslands and Wetlands
Pesticide Container Recycling Hits Six Year Peak
Audubon Launches State Office
Environmental Decision Making Conference
MidAmerica GIS Symposium Comes to Cornhusker Hotel in May
Symposium Proceedings Available from Great Plains Foundation
Water News Briefs
Tips on Water Conservation
Useful Resources
Source Water Protection Conference Coming to Dallas in April
UNL Faculty Bring Home ASAE Educational Blue Ribbons
Notes From The Director, The Mcnair Team
Notes From The Director, The Mcnair Team
McNair Scholars Research Journal
No abstract provided.
Public Participation Program Development: An Analysis Of Public Participation In The Water Industry, Marcia Lynne Holmberg
Public Participation Program Development: An Analysis Of Public Participation In The Water Industry, Marcia Lynne Holmberg
UNLV Theses, Dissertations, Professional Papers, and Capstones
The field of public participation is a distinct, but yet unpolished facet within the public relations industry. While the purpose of and need for public participation are becoming increasingly clear, many remain unaware or unconvinced of its advantages. Likewise, even among those who endorse the necessity of public participation, its methods and strategies continue to be a mystery to most.
One industry, in particular, that has recognized and embraced the benefits of conducting public participation is the water utility industry. The purpose of this thesis is to 1) crystallize the understanding of why public participation is a necessary and advantageous …
A Plan For Characterizing Waste For The Defense Special Weapons Agency At The Nevada Test Site, Tiffany A. Hatcher
A Plan For Characterizing Waste For The Defense Special Weapons Agency At The Nevada Test Site, Tiffany A. Hatcher
UNLV Theses, Dissertations, Professional Papers, and Capstones
In 1976, Congress adopted the Resource Conservation and Recovery Act (RCRA) to govern hazardous waste. The Act was amended in 1984 with the Hazardous and Solid Waste Amendments in order to further define the requirements of RCRA. RCRA is meant to protect human health and the environment from the effects of hazardous waste, promote waste minimization, and encourage material recycling and recovery. For this purpose, regulations are implemented that cover every aspect of the hazardous waste problem, including generation, transport, treatment, storage, and disposal.
Generators of waste are the most important part of this chain. As defined in RCRA, a …
Pan, Ppn And Mpan Measurements And The Systematic Relationship Between Mpan And Macr At A Semi-Rural Site In Tennessee, George Nouaime
Pan, Ppn And Mpan Measurements And The Systematic Relationship Between Mpan And Macr At A Semi-Rural Site In Tennessee, George Nouaime
Masters Theses
Simultaneous measurements of peroxymethacryloyl nitrate (MPAN) and its primary and secondary precursors, methacarolein (MACR) and isoprene, were carried out for the first time in July 1995 at a semi-rural site southeast of Nashville. In addition to these compounds, peroxyacetyl nitrate (PAN), peroxypropionyl nitrate (PPN), other volatile organic compounds (VOCs) and supporting measurements were also collected in collaboration with other research groups. The mean concentrations of PAN, PPN, MPAN and MACR were found to be 485 pptv, 50 pptv, 30 pptv and 0.290 ppbv respectively. MP AN levels, which closely tracked those of MACR during the day, peaked and dropped earlier …
A Comparison Study Of Water Well Grouting Materials, Sherry L. Callaway
A Comparison Study Of Water Well Grouting Materials, Sherry L. Callaway
Masters Theses
To prevent contamination from occurring in water wells, and thereby groundwater, the annulus between the well casing and borehole wall must be sealed with a grout that is capable of maintaining a proper seal. Several factors and properties determine the integrity of the grout and the seal formed by that grout.
A field study discovered limitations in all of the tested grout types. Most grouts were found to vary greatly in thickness surrounding the well casing. Bentonite slurry grouts settled excessively. Cement and bentoni tecement grouts did not adhere to PVC well casing. Bentonite-cement grout fractured. The granulated bentonite was …
Laboratory Comparison Of Trench Design Options For Recovering Spilled Oil, Renuka Fernando
Laboratory Comparison Of Trench Design Options For Recovering Spilled Oil, Renuka Fernando
Masters Theses
The research goal was to improve the performance of drainage trenches used to recover spilled oil in the subsurface. Different trench designs were compared in two laboratory experiments. The first laboratory experiment clearly demonstrates that the performance of a oil recovering drainage trench could be improved by replacing the standard gravel pack sand used around the drain pipe with mixtures of teflon and sand. The effectiveness of a downgradient impermeable 'backstop' also was studied in the first experiment.
In experiment two, four trench designs were compared: perforated drain pipe; wire-wrapped horizontal well screen; perforated sheet pile; and gravel fill with …
Preliminary Investigation Of The Extent And Effects Of Sediment Contamination In White Lake Near Whitehall Leather Tannery, Richard Rediske, Gary Fahnenstiel, Tom Nalepa, Peter Meier, Claire Schelske
Preliminary Investigation Of The Extent And Effects Of Sediment Contamination In White Lake Near Whitehall Leather Tannery, Richard Rediske, Gary Fahnenstiel, Tom Nalepa, Peter Meier, Claire Schelske
Scientific Technical Reports
By using a combination of chemistry, toxicological evaluation, ecological analysis, and radiodating, this investigation has defined the ecological effects and the nature and extent of sediment contamination in the Tannery Bay area of eastern White Lake. The sediments in Tannery Bay represent a source of chromium transport for most of the eastern basin of White Lake. The recent deposition of chromium contaminated sediments exceeding 500 mg/kg in down gradient locations shows that export processes are responsible for the movement of this material from Tannery Bay. Arsenic and mercury appear to be less mobile and are retained in the sediments of …
Year In Review - 1997, Annis Water Resources Institute
Year In Review - 1997, Annis Water Resources Institute
AWRI Reviews
No abstract provided.
Inhibitory Effect Of Carbamate On The Cell Division Of Rat Bone Marrow, Mariam Hamad Rashed Al-Dhaheri
Inhibitory Effect Of Carbamate On The Cell Division Of Rat Bone Marrow, Mariam Hamad Rashed Al-Dhaheri
Theses
The cytotoxic effect of methomyl carbamate was studied in three groups (control group, 1 % treated group and 10% treated group) and each group contain 2-3 White Wistar rats. The 1% treated group was received 1 % of methomyl LD50, while the 10% treated group was received 10% of methomyl LD50. The administration was orally and repeated three times with 24 hr intervals time. The effect of methomyl was investigated in four experimental run, by analysing the change in cell count in bone marrow after methomyl treatment. It was found that methomyl treatment caused significant reduction …
Pesticide-Related Health Problems And Illness In Farm-Workers In The United Arab Emirates, Mahra Mohammed Mahmood Beshwari
Pesticide-Related Health Problems And Illness In Farm-Workers In The United Arab Emirates, Mahra Mohammed Mahmood Beshwari
Theses
Arabian Gulf countries, witnessed rapid development in many aspects of life. Although these
developments have improved the quality of life in the UAE, they have drawbacks that generated
health problems and environmental hazards. One of the consequences of rapid development is the
usage of large amounts of pesticides in agricultural production for the sake of increasing the yield of crops. However, the expanded use of these pesticides is known to result in acute respiratory symptoms and changes in body metabolism. To-date, no population-based study has been conducted to investigate the effects of pesticides on plasma amino acids and liver enzyme …
The Probe, Issue 182 - November 1997
The Probe, Issue 182 - November 1997
The Probe: Newsletter of the National Animal Damage Control Association
Contents: Exclosures Around Overflow Pipes and Trees Prevent Beaver Damage Calendar of Upcoming Events Deer, Dog in House Don’t Mix Indiana Nuisance Operators Organize Humane Trapping Standards Adopted Video Review: “Dealing With Urban Wildlife: Learn How to Protect Your Home and Property from Wildlife Damage” National Wildlife Refuge Improvement Act Passes Fund for Animals Tries to Cross-Up Deer Hunting Priests Beaver Damage Widespread Texas Coyotes Damage Melons Cranes, Hogs Decimate Corn Fox Attacks California Woman Drip Irrigation Damaged by Coyotes Wolf Conflicts Sets Record in Minnesota
Center For Sustainable Agricultural Systems Newsletter, November/December 1997
Center For Sustainable Agricultural Systems Newsletter, November/December 1997
Center for Sustainable Agricultural Systems: Newsletter (1993–2000)
Contents: CSAS Publishes Book That Reviews Sustainable Ag Literature NCR SARE Solicits PDP Proposals Integrated Farm Update: Impact of Spring-grazing Crop Residues Education in Scandinavia: from Farming to Food Systems NSAS 1998 Annual Meetings Ecosystems Provide Valuable "Services" Worth $33 Trillion USDA Creates New Office of Pest Management Sanet-mg Archives: A Valuable Resource
Evaluation Of Constructed Wetlands On Phosphate Mined Lands In Florida, G. R. Best, M. T. Brown, Thomas Crisman, Keven L. Erwin, D. A. Graetz, K. R. Reddy, H. Kale, P. Pritchard, T. M. Missimer, C. W. Walker, A. Owosina, M. J. Deuver
Evaluation Of Constructed Wetlands On Phosphate Mined Lands In Florida, G. R. Best, M. T. Brown, Thomas Crisman, Keven L. Erwin, D. A. Graetz, K. R. Reddy, H. Kale, P. Pritchard, T. M. Missimer, C. W. Walker, A. Owosina, M. J. Deuver
School of Geosciences Faculty and Staff Publications
Summarizing research conducted from June 1993 to May 1995 on hydrology, soils, water quality, and aquatic fauna on phosphate mined lands in Florida.