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Articles 43231 - 43260 of 52626
Full-Text Articles in Entire DC Network
Hydrogeology And Stable Isotope Investigations Of A Landfill Impacted Site In Southwest Michigan, Eliot Anong Atekwana
Hydrogeology And Stable Isotope Investigations Of A Landfill Impacted Site In Southwest Michigan, Eliot Anong Atekwana
Dissertations
The Cork Street landfill in the City of Kalamazoo is unlined and constructed in glacial drift material. Although water quality in some of the landfill monitoring wells is poor, the degree of the landfill’s influence to groundwater, wetlands and Davis Creek located downgradient of the landfill is unknown. The objective of this study is to evaluate the degree of the landfill’s impact in this region through hydrologic and stable isotope analysis.
Site characterization using geophysical surveys and specific conductance measurements indicates highly conductive shallow groundwater probably attributable to groundwater contamination. Hydrologic evaluation of this region shows that groundwater flows towards …
The Biodegradation Characteristics Of Proposed Fuel Systems Icing Inhibitors (Fsii), Charles E. Meshako
The Biodegradation Characteristics Of Proposed Fuel Systems Icing Inhibitors (Fsii), Charles E. Meshako
Theses and Dissertations
The biodegradation characteristics of three fuel system icing ihhibitors (FSII) were evaluated. FSII are jet fuel additives that partition into water readily and are present in the water drained from storage tank bottoms in concentrations approaching 40%. These concentrations raise concerns as to the disposal and handling of these wastes. The current FSII, DiEGME was evaluated along with two new candidates, dipropylene glycol and glycerol formal. DiEGME appeared to be moderately but not completely biodegradable. It is likely that much of it would be removed in a wastewater treatment plant. Dipropylene glycol only showed signs of degradation after more than …
An Activity Driver Based Analysis Of Hazardous Materials Usage At Wright-Patterson Afb, Charles D. Perham
An Activity Driver Based Analysis Of Hazardous Materials Usage At Wright-Patterson Afb, Charles D. Perham
Theses and Dissertations
As the Air Force has progressed and succeeded in the realm of pollution prevention, the opportunities for further progress have become more challenging. With the 'low-hanging fruit' now gone from the pollution prevention tree, new methods to identify opportunities must be adopted. This research effort applied a subset of activity based costing, activity driver analysis, to reveal pollution prevention opportunities in regards to hazardous materials usage. A sample of base organizations (civil engineering and aircraft maintenance), and a sample of the hazardous chemicals (Class C or most hazardous) used by those organizations were investigated to determine the drivers behind usage.
Laser-Induced Breakdown Spectroscopy On Solution Samples Using Surface Excitation, Leonard M. Berman
Laser-Induced Breakdown Spectroscopy On Solution Samples Using Surface Excitation, Leonard M. Berman
Theses and Dissertations
Laser-induced breakdown spectroscopy (LIBS) is a spectroscopic technique where output from a pulsed laser is focused onto a target in order to create an intense plasma. The optical emission is characteristic of the elements in the focal volume and can be used for elemental analysis. Research on the detection of nickel in solution in addition to solvent detection of CCl4, CHCl3, C2Cl4, and C2HCl3 has been performed. Breakdown was formed at the sample surface via a Q-switched Nd:YAG laser. Initially, operation of the laser was at 1064 nm/repetition rate of 5 Hz. Experiments …
Mass Transport Of Volatile Organic Compounds Between The Saturated And Vadose Zones, Monte S. Harner
Mass Transport Of Volatile Organic Compounds Between The Saturated And Vadose Zones, Monte S. Harner
Theses and Dissertations
Volatile organic compounds (VOCs) dissolved in the saturated zone are transported into the vadose zone primarily by gaseous phase diffusion. If the saturated zone is remediated, VOCs present in the vadose zone may become a secondary source of contamination for the groundwater. The amount of VOCs that remain in the vadose zone is dependent on site hydrology, soil properties, and the chemical properties of the contaminants. The purpose of this study was to determine what conditions caused VOC concentrations in the vadose zone to significantly recontaminate the saturated zone. A one-dimensional numerical model was developed to investigate the transport of …
Evaluating The Hazardous Materials (Hazmat) Pharmacy Among Air Force Majcoms Using Waste Reductions And Activity Indicators, W. Edward Iseman Jr.
Evaluating The Hazardous Materials (Hazmat) Pharmacy Among Air Force Majcoms Using Waste Reductions And Activity Indicators, W. Edward Iseman Jr.
Theses and Dissertations
The Hazardous Materials (HazMat) Pharmacy has been designed as an environmentally friendly vehicle to handle, store, dispense, track, recycle, and dispose of hazardous materials in the Air Force. This thesis effort proposed a method in which valuable feedback for the pharmacy can be obtained. Because it is still in the early stages of implementation, there has been little feedback on the pharmacy. An activity index that uses a variable most closely associated with the generation of hazardous waste in a MAJCOM is proposed. Using an aircraft maintenance related variable, like maximum take-off weight, the fluctuations in mission over time can …
Local Effects Of Solid Rocket Motor Exhaust On Stratospheric Ozone Concentrations, Brian K. George
Local Effects Of Solid Rocket Motor Exhaust On Stratospheric Ozone Concentrations, Brian K. George
Theses and Dissertations
Solid Rocket Motors (SRMs) power the initial flight of the Space Shuttle and Titan IV rocket. During those first two minutes after liftoff, the exhaust plumes from these motors emit large quantities of chlorine compounds and alumina particles into the atmosphere. For years scientists have argued that such a large chlorine input, injected directly into the stratosphere, would photochemically react with the surrounding air to cause significant ozone depletion. To answer the question of whether SRM exhaust causes a significant ozone depletion, Version 7 data from the Total Ozone Mapping Spectrometer (TOMS) instrument was analyzed for the 30 days prior …
Modeling Marine Exposure To Polychlorinated Biphenyls From Sunken Ships, Charles N. Wendt
Modeling Marine Exposure To Polychlorinated Biphenyls From Sunken Ships, Charles N. Wendt
Theses and Dissertations
In the past, the U.S. Navy has routinely conducted SINKing EXercises (SINKEX) for training, weapon effectiveness tests, and economic disposal of aging assets. Recent concern over polychlorinated biphenyl (PCB) chemicals aboard such target vessels has resulted in a suspension of SINKEX. The U.S. Navy has approximately 200 vessels currently requiring such disposal. Environmental legislation and health concerns preclude selling such vessels to foreign governments or scrapping. This work attempted to model the fate and transport of these PCBs by examining their transport to coastal water and their accumulation in the marine food chain. The model includes biodegradation, upwelling, partitioning of …
Surfactant Enhanced Microbial Degradation Of Jp-8 Contaminated Soil, John D. Thomas
Surfactant Enhanced Microbial Degradation Of Jp-8 Contaminated Soil, John D. Thomas
Theses and Dissertations
This research effort used an automated respirometer to evaluate the enhancement of JP-8 fuel biodegradation, from surfactant addition. Two nonionic surfactants, Novell 1412-7 and Alfonic 810-4.5 were chosen for addition to contaminated JP-8, microcosms at three levels of treatment. The three levels of treatment included sub-CMC, CMC, and supra-CMC concentrations for each surfactant. The Novell II, nonionic surfactant, exhibited inhibitory characteristics, and was eliminated from the study. The focus of the study was to determine if JP-8 was actually degraded, and if enhancement of JP-8 biodegradation would be achieved from surfactant addition. The respirometer was found to be repeatable within …
The Prairie Naturalist Volume 28, No. 4. December 1996
The Prairie Naturalist Volume 28, No. 4. December 1996
The Prairie Naturalist
IMPLANTED MICROCHIPS USED TO INDIVIDUALLY IDENTIFY BLACK-FOOTED FERRETS IN MONTANA ▪ R. Stoneberg
GRAY WOLF STATUS IN NORTH DAKOTA ▪ D. S Licht and L. E. Huffman
VARIATION IN SELECTION OF MICROHABITATS BY MERRIAM'S TURKEY BROOD HENS ▪ M. A. Rumble and S. H. Anderson
SURVIVAL AND REPRODUCTIVE CHRONOLOGY OF FEMALE RING-NECKED PHEASANTS IN SOUTH DAKOTA ▪ A. P. Leif
EFFECTS OF LOGGING SLASH ON ASPEN REGENERATION IN GRAZED CLEARCUTS ▪ M. A. Rumble, T. Pella, J. C. Sharps. A. V. Carter, and J. B. Parrish
BOOK REVIEWS
The Poetry of Ecoregions ▪ J. Pastor
Saving Texas' Rare Ones ▪ …
Evaluation Of Carcinogenic Potential Of Benzo(Α)Pyrene And Dimethylbenzanthracene In Mouse Leukemic Cells, Mohammad Sharif Sultan Al Ulama
Evaluation Of Carcinogenic Potential Of Benzo(Α)Pyrene And Dimethylbenzanthracene In Mouse Leukemic Cells, Mohammad Sharif Sultan Al Ulama
Theses
The carcinogenic potential of benzo[α]pyrene (B(α)P) and dimethylbenzanthracene (DMBA) was tested using mouse leukemic cell lines L-5178 R and S types in tissue culture condition. It was found that B(α)P and DMBA inhibited the synthesis of DNA of R and S types of cells to about 34%, at 10 mM concentration. While B(α)P and DMBA did not show any acute toxic effect on mouse cell line Rand S types at 1 mM concentration separately. Both R and S types of cells were allowed to grow for several days in the presence of 1 mM DMBA and B(α)P respectively. Several independent …
Prairie Legacies - Mammals, Russell A. Benedict, Patricia W. Freeman, Hugh H. Genoways
Prairie Legacies - Mammals, Russell A. Benedict, Patricia W. Freeman, Hugh H. Genoways
School of Natural Resources: Faculty Publications
Few North American ecosystems have been as dramatically altered by humans as the prairies of the Great Plains. Occupying the immense interior of North America, these deceiving grassland oceans hid their complexity and diversity from many early travelers who saw this area merely as an obstacle to overcome in their westward journeys. But for the careful observer, prairies hold a tremendous quantity of life, arranged in a diverse mosaic of patches ranging in scale from minute anthills to the vastness of the Nebraska Sandhills or Kansas Flint Hills. Not only is a given ridgetop subdivided into a number of areas …
Directory Of Water Related Courses Offered At Colleges And Universites In Arkansas, Kenneth F. Steele
Directory Of Water Related Courses Offered At Colleges And Universites In Arkansas, Kenneth F. Steele
Arkansas Water Resources Center Technical Reports
This publication lists the water and water-related courses at several universities and colleges in Arkansas as reported during the Fall of 1996. It Is anticipated that users of this directory will extend beyond college students, and will include professionals seeking continuing education, and professors desiring to exchange information on courses. This directory is not an "absolute" source of water and water-related courses because all of the higher learning institutions in Arkansas are not listed, and, secondly, because the definition of "water and water-related" varies from institution to institution. None-the-less this directory provides a very valuable and impressive reference on water …
The Probe, Issue 171 – November 1996
The Probe, Issue 171 – November 1996
The Probe: Newsletter of the National Animal Damage Control Association
Park Service Thwarts Cat Allies, by Marilyn Davis, Native Species Network, Bodega Bay, California
Jim Miller Elected VP of Wildlife Society
ADC Aerial Hunting Accident Kills 2
Obituary: Carl R. Gustavson
HSUS Former Employee File Lawsuits
Rats Shut Down Internet at Stanford
Call for Papers: A Symposium on Mammal Trapping August 1997 in Edmonton, Alberta
Fur in Cyberspace: The Fur Institute of Canada announces it has established a site on the World Wide Web, at the following address: http://www.fur.ca.
Book Review: Beaver and Otter: Open Water Techniques, by Charles Dobbins 1992. Beaver Pond Publishing and Printing, P.O. Box 224, Greenville, …
Center For Sustainable Agricultural Systems Newsletter, November/December 1996
Center For Sustainable Agricultural Systems Newsletter, November/December 1996
Center for Sustainable Agricultural Systems: Newsletter (1993–2000)
Contents: Nebraska IMPACT Project Update North Central Region Evaluates Sustainable Agriculture Training Annual Meetings in Nebraska to Showcase Innovative Strategies for Successful Farming Integrated Farm Update: To Graze or Not to Graze? USDA Announces Policy Directive Committing Agency to Sustainable Ag Transformation of Land Grant Universities Food Circles: A Bioregional Approach Fund for Rural America Ag Production and Nutrition Conference Richard Olson Named Presidential Fellow
แก้มลิงเอกชน : การจัดระบบในพื้นที่ลุ่มเพื่อแก้ไขปัญหาน้ำท่วมในชุมชน, เกษมสันติ์ สุวรรณรัต
แก้มลิงเอกชน : การจัดระบบในพื้นที่ลุ่มเพื่อแก้ไขปัญหาน้ำท่วมในชุมชน, เกษมสันติ์ สุวรรณรัต
Thai Environment
No abstract provided.
น้ำที่ท่านใช้ปลอดภัยจริงหรือ, สิริกร เกรอต
การป้องกันมลพิษ - ยุทธศาสตร์ใหม่ของการรักษาคุณภาพสิ่งแวดล้อม, ธีรพล คังคะเกตุ
การป้องกันมลพิษ - ยุทธศาสตร์ใหม่ของการรักษาคุณภาพสิ่งแวดล้อม, ธีรพล คังคะเกตุ
Thai Environment
No abstract provided.
แผ่นทำความสะอาดมลพิษทางอากาศ, จันทรา ทองคำเภา
การใช้ไม้สักสร้างเส้นปริมาณน้ำฝนและอุณหภูมิในอดีต, นาฏสุดา ภูมิจำนงค์
การใช้ไม้สักสร้างเส้นปริมาณน้ำฝนและอุณหภูมิในอดีต, นาฏสุดา ภูมิจำนงค์
Thai Environment
No abstract provided.
โลกเขียวด้วยฉลากเขียว, เชิดพันธ์ สุคนธ์พงษ์เผ่า
โลกเขียวด้วยฉลากเขียว, เชิดพันธ์ สุคนธ์พงษ์เผ่า
Thai Environment
No abstract provided.
ธุรกิจสิ่งแวดล้อม : "กองทุนสีเขียว" อุตสาหกรรมควบคู่สิ่งแวดล้อม, อ้อย พันธเดช
ธุรกิจสิ่งแวดล้อม : "กองทุนสีเขียว" อุตสาหกรรมควบคู่สิ่งแวดล้อม, อ้อย พันธเดช
Thai Environment
No abstract provided.
รายงานสิ่งแวดล้อม : "ฟินิคซ พัลพ" อุตสาหกรรมกับปัญหาสิ่งแวดล้อมชุมชน, อ้อย พันธเดช
รายงานสิ่งแวดล้อม : "ฟินิคซ พัลพ" อุตสาหกรรมกับปัญหาสิ่งแวดล้อมชุมชน, อ้อย พันธเดช
Thai Environment
No abstract provided.
The Use Of Bauxite Residue As A Soil Amendment In The Peel-Harvey Coastal Plain Catchment - Report On Results Of 1995 Environmental Monitoring Program, Mark Rivers
Natural resources published reports
This report was submitted in accordance with the recommendations of the Environmental Protection Authority (EPA) who have stated that a monitoring program shall be undertaken by Agriculture Western Australia within six months of the widespread use of bauxite residue as a soil amendment. Although this widespread use of bauxite residue has not yet formally commenced, pre-emptive monitoring has been undertaken in order to gain some understanding of the general environmental characteristics of the Peel-Harvey catchment and, in particular, the characteristics and quality of the water flowing through the catchment.
It represents the second annual report submitted to the EPA describing …
Western Australian Salinity Action Plan, Agriculture Western Australia, Department Of Conservation And Land Management, Department Of Environmental Protection, Water And Rivers Commission
Western Australian Salinity Action Plan, Agriculture Western Australia, Department Of Conservation And Land Management, Department Of Environmental Protection, Water And Rivers Commission
Natural resources published reports
Salinity is one of the State's most critical environmental problems, threatening major economic and social consequences. It is preventable and, in the long term, reversible. Complete elimination is not realistic, but we can dramatically reduce its impact.
Salinity is caused by replacing deep-rooted native plants with shallow-rooted crops and pastures. More rainfall passed below the root zone and accumulates as groundwater so that watertables rise. The groundwater mobilises natural salts in the soil as it rises and carries them towards the surface, eventually degrading land and streams.
แนะนำโครงการ : โครงการการศึกษาผลกระทบสิ่งแวดล้อมของการก่อสร้างพิพิธภัณฑ์สถานแห่งชาติไดโนเสาร์ ภูกุ้มข้าว จังหวัดกาฬสินธุ์, ลือชัย ครุธน้อย
แนะนำโครงการ : โครงการการศึกษาผลกระทบสิ่งแวดล้อมของการก่อสร้างพิพิธภัณฑ์สถานแห่งชาติไดโนเสาร์ ภูกุ้มข้าว จังหวัดกาฬสินธุ์, ลือชัย ครุธน้อย
Thai Environment
No abstract provided.
สัมภาษณ์พิเศษ: ดร.เกษมสันติ์ สุวรรณรัต รองผู้อำนวยการสำนักงานนโยบายและ แผนกรุงเทพมหานคร
สัมภาษณ์พิเศษ: ดร.เกษมสันติ์ สุวรรณรัต รองผู้อำนวยการสำนักงานนโยบายและ แผนกรุงเทพมหานคร
Thai Environment
No abstract provided.
จับตากฎหมายใหม่ : ระเบียบสำนักนายกรัฐมนตรีว่าด้วยการรับฟังความคิดเห็นสาธารณะโดยวิธีประชาพิจารณ์ พ.ศ. 2539, อุษณีย์ ศิริสุนทรไพบูลย์
จับตากฎหมายใหม่ : ระเบียบสำนักนายกรัฐมนตรีว่าด้วยการรับฟังความคิดเห็นสาธารณะโดยวิธีประชาพิจารณ์ พ.ศ. 2539, อุษณีย์ ศิริสุนทรไพบูลย์
Thai Environment
No abstract provided.