Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (6874)
- Montana Tech Library (1846)
- Utah State University (907)
- University of Colorado Law School (811)
- University of Nevada, Las Vegas (790)
-
- Portland State University (570)
- University of Arkansas, Fayetteville (503)
- Department of Primary Industries and Regional Development, Western Australia (497)
- SIT Graduate Institute/SIT Study Abroad (470)
- International Centre of Insect Physiology and Ecology (357)
- University of Kentucky (350)
- University of South Florida (336)
- Chulalongkorn University (323)
- Clemson University (314)
- City University of New York (CUNY) (265)
- Old Dominion University (263)
- Louisiana State University (262)
- University of Texas Rio Grande Valley (258)
- Edith Cowan University (250)
- World Maritime University (206)
- Montclair State University (201)
- University of Texas at El Paso (197)
- Western Kentucky University (193)
- Walden University (189)
- Chapman University (188)
- South Dakota State University (164)
- University of New Hampshire (159)
- The University of San Francisco (158)
- New Jersey Institute of Technology (156)
- United Arab Emirates University (150)
- Keyword
-
- Sustainability (578)
- Climate change (547)
- Water quality (458)
- Priority Soils (398)
- United States (327)
-
- Environment (310)
- Western Australia (302)
- Groundwater (296)
- Conservation (272)
- Metals Abatement (228)
- Agriculture (218)
- Drought (208)
- Water (197)
- Pollution (191)
- Invasive species (186)
- Colorado (181)
- California (179)
- Management (174)
- Natural resources (149)
- Environmental (148)
- Unreclaimed Sites (147)
- Utah (147)
- Biodiversity (146)
- Energy (145)
- Field Sampling (144)
- GIS (133)
- Remote sensing (132)
- Climate (127)
- Consent Decree (127)
- Quality Assurance (127)
- Publication Year
- Publication
-
- Silver Bow Creek/Butte Area Superfund Site (1835)
- United States Department of Agriculture Wildlife Services: Staff Publications (1243)
- School of Natural Resources: Faculty Publications (484)
- Great Plains Wildlife Damage Control Workshop Proceedings (478)
- Independent Study Project (ISP) Collection (441)
-
- All Peer-Reviewed Publications (357)
- Theses and Dissertations (332)
- Theses (277)
- Electronic Theses and Dissertations (263)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (258)
- USF Tampa Graduate Theses and Dissertations (227)
- Reports (221)
- Water Current Newsletter (200)
- LSU Master's Theses (196)
- Open Access Theses & Dissertations (196)
- Department of Environmental Studies: Undergraduate Student Theses (191)
- Walden Dissertations and Doctoral Studies (189)
- Eastern Pine and Meadow Vole Symposia (185)
- Graduate Theses and Dissertations (179)
- The Probe: Newsletter of the National Animal Damage Control Association (173)
- Applied Environmental Research (166)
- Dissertations and Theses (156)
- School of Earth, Environmental, & Marine Sciences Faculty Publications (156)
- S.C. Water Resources Conference (155)
- United States Geological Survey: Staff Publications (154)
- Human–Wildlife Interactions (148)
- School of Natural Resources: Dissertations, Theses, and Student Research (135)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (133)
- All U.S. Government Documents (Utah Regional Depository) (132)
- World Maritime University Dissertations (121)
- Publication Type
Articles 24541 - 24570 of 24937
Full-Text Articles in Entire DC Network
Survey Of Instrumentation For Air Quality Surveillance, John Bowling
Survey Of Instrumentation For Air Quality Surveillance, John Bowling
Retrospective Theses and Dissertations
No abstract provided.
Suppression Of Turbofan And Turbojet Engine Generated Noise, Harry David Master
Suppression Of Turbofan And Turbojet Engine Generated Noise, Harry David Master
Retrospective Theses and Dissertations
Every advance in the transformation of heat energy into mechanical energy has involved a noise problem, and in general it increases with the power production. The jet airplane is a good example: the large-scale turbulence of the exhaust gases in the jet forms an unusually intense source of sound the control of which is quite difficult. The additionally generated fan noises add characteristic fan tones which are particularly noticeable on landing approaches. the human ear is the vulnerable receiver of these noises, and the problem becomes one of deciding how much jet engine noise reduction is required for the comfort …
Food Habits Of Fish In A Multispecies Farm Pond, Thomas W. Gengerke
Food Habits Of Fish In A Multispecies Farm Pond, Thomas W. Gengerke
Electronic Theses and Dissertations
Food habits of yellow perch, bluegill, and black crappie were studied during 1970 and 1971 in Abbey Pond, South Dakota. Aquatic insects, zooplankton, mollusks, and fish were the most frequently consumed food items by the three species. Yellow perch led primarily on aquatic insects, zooplankton, and mollusks. Aquatic insects were dominant (by volume) in 40.0 and 61.5 percent of the samples respectively for the two years. Zooplankton, mollusks, aquatic insects, and bryozoans were the dominant food items by volume of adult bluegills. On an annual basis aquatic insects were the most important food item in the diet. Adult black crappies …
Determination Of Trace Elements In Water Utilizaing Atomic Absorption Spectroscopy Measurement, Gary D. Christian, J. Preston Miles Iii, Ronald Sensmeier, Melvin Sensmeier, Loraine Craig, Lynn Phibrick, Sudarshan Lal
Determination Of Trace Elements In Water Utilizaing Atomic Absorption Spectroscopy Measurement, Gary D. Christian, J. Preston Miles Iii, Ronald Sensmeier, Melvin Sensmeier, Loraine Craig, Lynn Phibrick, Sudarshan Lal
KWRRI Research Reports
A variety of flameless atomic absorption methods have been investigated for the possible determination of trace elements in water. The general applicability of each technique was determined and where applicable, procedures have been developed for the determination of trace elements in natural waters.
Metals were preconcentrated by electrodeposition on a wire. The metals were then atomized for atomic absorption measurement by resistive heating of the wire. As little as 0.01 part per million (ppm) of mercury could be determined in this way.
A mercury cold vapor cell was constructed in which the sample is treated with a reducing agent to …
Factors Regulating The Growth Of Algae In Continuous Culture In Diluted Secondary Sewage Treatment Plant Effluent And Subsequent Biodegradability, Edward G. Foree, Caroline P. Wade
Factors Regulating The Growth Of Algae In Continuous Culture In Diluted Secondary Sewage Treatment Plant Effluent And Subsequent Biodegradability, Edward G. Foree, Caroline P. Wade
KWRRI Research Reports
Heterogeneous algal cultures were grown in laboratory continuous culture in continuous flow, completely mixed chemostats in secondary sewage treatment plant effluent diluted to give an ammonia nitrogen concentration of 10 mg/1. Variables were lighting, pH, carbon dioxide availability, and hydraulic residence time.
Optimum growth occurred under pH 7.0, excess CO2, and continuous lighting conditions. The availability of artificially supplied excess CO2 greatly increased the mass (standing crop) at steady-state over that produced under otherwise identical conditions for all residence times studied. For the case of excess CO2 availability, the nitrogen concentration in the algal cells regulated …
The Great Salt Lake And Utah's Water Resources , Utah Water Research Laboratory
The Great Salt Lake And Utah's Water Resources , Utah Water Research Laboratory
Reports
Introduction: It is appropriate to introduce these proceedings with a brief description of this history and objectives of the American Water Resources Association (AWRA). Quoting from a recent information borchure published by the AWRA, it is a non-profit, scientific organization that was incorporated in the State of Illinous in March, 1964, with headquarters in Urbana, Illinois. A major factor in the establishment of the AWRA was the need for an organization to encourage and foster interdisciplinary communication between professionals of diverse backgrounds working on all aspects of water resources problems. The principal objectives of AWRA are stated briefly as follows: …
Development Of Regional Supply Functions And A Least-Cost Model For Allocating Water Resources In Utah: A Parametric Linear Programming Approach, Alton B. King, Jay C. Andersen, Calvin G. Clyde, Daniel H. Hoggan
Development Of Regional Supply Functions And A Least-Cost Model For Allocating Water Resources In Utah: A Parametric Linear Programming Approach, Alton B. King, Jay C. Andersen, Calvin G. Clyde, Daniel H. Hoggan
Reports
The development and allocation of the water resourcse within a state require water planners to prepare plans far in advance of the actual time new facilities are required. It is not easy to identify and evaluate all the possible alternatives for providing water which incorporate broad objectives such as economic efficiency, social welfare, regional development, recreation benefits, and conservation of environment. Water resources development entails the modification of a natural hydrologic system to better meet man's needs. The interrelationships among elements of the hydrologic system to better meet man's needs. The interrelationships among elements of the hydrologic system are relatively …
Toward An Energy Policy, Dean E. Abrahamson
Toward An Energy Policy, Dean E. Abrahamson
Journal of the Minnesota Academy of Science
The lack of a national policy on fuels and energy at a time of concern about the future supply and demand for energy and the environmental effects of creating energy is examined. Alternatives to present practices in generating and utilizing power are considered along with suggestions for measuring the "energy cost" of technological progress.
A Water Quality Survey, Dale E. Mcmichael
A Water Quality Survey, Dale E. Mcmichael
Journal of the Minnesota Academy of Science
Representative factors influencing water quality in the Albert Lea, Minnesota area were chosen as to assess water quality and changes in the watershed which has been described as an earlier valley of the Shell Rock River.
Parameters representative of chemical, bacterial, and thermal pollution were, respectively, total phosphorous, total and fecal coliform counts, and temperature. Statistical analysis has revealed that significant differences in some parameters measured do exist when various sampling stations of a given sampling date are compared. Statistical analysis also has indicated that correlations do exist between fluctuation patterns when all sampling stations of a given sampling date …
Analyses Of The Water And Wastewater Systems At Florida Technological University, Fred C. Jensen
Analyses Of The Water And Wastewater Systems At Florida Technological University, Fred C. Jensen
Retrospective Theses and Dissertations
In searching for a subject to meet the M. S. Degree Research Report requirements, I had several objectives in mind. I wanted (1) a project with relevancy in the environmental field which would broaden my understanding of the environmental systems which I have studied, (2) a subject which would allow me to apply some of the Principles which I have learned in Operations Research , and (3) a project which had good practical application. With these objectives in mind, I reviewed the suggested topics presented by the Faculty and selected the FTU Water and Wastewater System Analyses topic which was …
Interactions Of Pesticides And Phytoplankton, Pamela H. Philyaw
Interactions Of Pesticides And Phytoplankton, Pamela H. Philyaw
Retrospective Theses and Dissertations
No abstract provided.
An Investigation Of Methods For Reuse Of Rubber Tires, Charles Edward Armbruster
An Investigation Of Methods For Reuse Of Rubber Tires, Charles Edward Armbruster
Retrospective Theses and Dissertations
Methods of reusing/recycling the more than 250 million automobile and truck tires which are worn out each year were investigated. The existing methods of reusing tires account for about 30 percent of the volume of scrap tires generated each year. These methods are, Retreading, Reclaiming (by reducing to ground up rubber and fiber), and Tire Splitting (stamp items out of sidewall and tread areas). Several possibilities for reusing/recycling the unused 70 percent were discovered. These methods are as follows: Destructive Distillation -- a method of recovering chemicals from tires by pyrolitic action. It is anticipated that eventually as much as …
Plant Cover For Bare And Salt Affected Land, Department Of Agriculture, Western Australia
Plant Cover For Bare And Salt Affected Land, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
The contributions made by this State to land reclamation were recognised at an international level last year.
Mr. C. V. Malcolm, a research officer with the Soils Division, presented a paper entitled "Establishing Shrubs in Saline Environments" at a symposium on Useful Wildland Shrubs, Their Biology and Utilisation, at Utah State University, Logan, Utah.
The conclusion to Mr. Malcolm's review, set out below, summarises much of what is known about shrub establishment in saline areas.
Agriculture And Pollution In Western Australia. Part 2. Pollution Problems In W.A, C V. Malcolm
Agriculture And Pollution In Western Australia. Part 2. Pollution Problems In W.A, C V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
In Part I pollution was defined as a reduction in the usefulness of a resource and its significance in relation to resource fragility was discussed. Pollution problems in Western Australia are here considered in broad geographical regions with further subdivision into pollution types.
Water Quality And Benthos Of A Small East Central Illinois Stream, With A Selected Literature Review, Kenneth Lloyd Brummett
Water Quality And Benthos Of A Small East Central Illinois Stream, With A Selected Literature Review, Kenneth Lloyd Brummett
Masters Theses
Polecat Creek is an occasionally intermittent stream which drains approximately 18,368 acres in eastern Coles County, Illinois. It travels 15.2 miles through cropland and a partially wooded valley before it enters the Embarrass River 3 miles upstream from Lake Charleston. The stream ranges from 0.5 foot to 5 feet deep at a normal water level, with an average depth of 16 inches. It averages 12 feet wide, with a range from 4 to 20 feet.
A water quality study with 5 stations along the stream was conducted from January 1971 to July 1971. A qualitative benthos study at the same …
Biomonitoring Of Organochlorine Insecticides Using The Clam, Amblema Plicata, Terry M. Hogan
Biomonitoring Of Organochlorine Insecticides Using The Clam, Amblema Plicata, Terry M. Hogan
Masters Theses
No abstract provided.
Nitrate-Phosphate Levels Of A Small Mid-Western Lake, Pamela Kay Harmon
Nitrate-Phosphate Levels Of A Small Mid-Western Lake, Pamela Kay Harmon
Masters Theses
No abstract provided.
Conflicts In Water Managment, A. Alvin Bishop
Conflicts In Water Managment, A. Alvin Bishop
Faculty Honor Lectures
Today we hear a lot about the "quality of life" and the "quality of the environment," two terms that everyone understands, but as yet no one has defined. Like others, I will not attempt a definition but introduce my subject by saying that water is intimately tied up with both our life and our environment, and its management has a profound effect for good or bad, depending upon the point of view. Today also, clean water and anti-pollution are popular crusades. Someone or something has to be responsible and engineering and science are convenient scapegoats. Considerable emotionalism is involved and …
Metabolic Role Of Sulfates And Sulfides Producing Bacteria In Pollution Of Waters, M. I. H. Aleem
Metabolic Role Of Sulfates And Sulfides Producing Bacteria In Pollution Of Waters, M. I. H. Aleem
KWRRI Research Reports
Cytochrome transport particles from Nitrobacter catalyzed nitrite, ascorbate as well as NADH oxidation with concomitant phosphate esterification yielding P/0 ratios of 1.0, 0.6 and 2.0 respectively. Phosphorylation coupled to nitrite oxidation was not effected by rotenone, amytal or antimycin while 50 and 70% inhibition of the NADH-linked phosphorylation was observed in the presence of HOQNO and rotenone respectively. Cell-free extracts from Nitrobacter also catalyzed an energy-dependent reduction of NAD+ by nitrite. The reduction of cytochrome c by NŌ2 was energy-dependent which involved the reversal of electrons from cytochrome a1. The subsequent energy-linked reduction of the flavoproteins …
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist
EDITORIAL: Badlands-Old and New ▪ Paul B. Kannowski
SEASONAL INVESTIGATIONS OF ALGAE FROM DEVILS LAKE, NORTH DAKOTA ▪ Richard Verch and Dean W. Blinn
THE VASCULAR FLORA OF PEMBINA COUNTY, NORTH DAKOTA ▪ Rays E. Willenbring and William T. Barker
LET'S EAT WILD ▪ Alan M. Cvancara
SURF SCOTER IN NORTH DAKOTA ▪ Harold A. Kantrud
SNOW GOOSE-CANADA GOOSE HYBRIDS ▪ David C. McGlauchlin
NOTES
Cowbird parasitism of an upland plover nest ▪ Kenneth F. Higgins
Birds sighted within one hour from one observation point in Burleigh County, North Dakota ▪ William A. Buresh
Golden-winged warbler in Burleigh County, North …
Survival Of Some Freshwater Fishes In The Alkaline Eutrophic Waters Of Nebraska, D. B. Mccarraher
Survival Of Some Freshwater Fishes In The Alkaline Eutrophic Waters Of Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: Staff Research Publications
Of 14 species of freshwater fishes held in cages in one or more of 13 alkaline lakes and ponds in Nebraska, few species survived more than a month where carbonate alkalinity, mostly as compounds of Na2C03 and KC03, was above 300 mg/liter. Of the 14 species tested, Sacramento perch (Archoplites interruptus), fathead minnow (Pimephales promelas), northern pike (Esox lucius), and the black bullhead (lctalurus melas), were the most tolerant of alkaline environments. Most centrachid fishes except A. interruptusand the green sunfish (Lepomis cyanel!us), did …
Water Resources News, Volume 3, No. 9, November 1971
Water Resources News, Volume 3, No. 9, November 1971
Water Current Newsletter
Program for the 1972 Interdisciplinary Seminar on Water Issues
Simulation of Groundwater Systems
Summer Short Course Planned
Recyling of Water
OSW Awards Freezing Plant Design Contract
Cloud-Seeding Program
Water Rights Study
"Turn-Key" Approach Proposed for Construction of Waste Treatment Plants
Water Quality Guidelines for Nation Being Updated by NAS for EPA
Nebraska Water Resources and Irrigation Development Seminar for the 1970s
EPA Names New Head of Solid Waste Programs Office
Symposium on Costs of Waster Pollution Control
Research Need
Symposium on Watershed Management
EPA Revising Regulations for Grants and Contracts
Internships in Science and Engineering
Report On Water Pollution Problems In Las Vegas Wash And Las Vegas Bay, Environmental Protection Agency
Report On Water Pollution Problems In Las Vegas Wash And Las Vegas Bay, Environmental Protection Agency
Publications (WR)
This report was prepared by the Federal Water- Quality Administration, Pacific Southwest Region, now the Environmental Protection Agency (EPA), Region IX, at the request of the State of Nevada, Department of Health, Welfare, and rehabilitation. In a letter, dated December 5, 1969, this agency asked for technical assistance, as authorized by the Federal Water Pollution Control Act, in developing discharge standards appropriate for Las Vegas Bay, Lake Mead, and the Lower Colorado River. The subsequent study was performed by EPA from January through August, 1970. The establishment of Nevada State Water Quality Standards for these waters will enable responsible officials …
Ua77/1 Western Alumnus, Vol. 40, No. 2, Wku Alumni Relations
Ua77/1 Western Alumnus, Vol. 40, No. 2, Wku Alumni Relations
WKU Administration Documents
Quarterly magazine created for WKU alumni. Regular features are Hilltopics, Sports, Alumni Newsgrams and Notes and In Memoriam. This issue includes:
- Graduate School (College) is On Its Way
- Evening Class is Thataway
- The Hilltopper Hundred to the Rescue
- ETV - Keep Watching, It's All in Color
- Student Interns Learn How Government Works
- Significant Statements: The New Year Begins
- Good News for Fishermen: Reservoir Research
- There it Was! Your Homecoming - 1971
- Performing Arts Illuminate the Campus Scene
- Discovery 1 - Uncovering the Kentucky of Antiquity
- Discovery 2 - Reviving the Heritage of Kentucky
- Discovery 3 - The Intercultural Studies Program …
A Preliminary Ecological Study Of Areas To Be Impounded In The Salt River Basin Of Kentucky, Louis A. Krumholz, Stuart E. Neff, Edmond J. Bacon, Jerry S. Parsons, John D. Woodling
A Preliminary Ecological Study Of Areas To Be Impounded In The Salt River Basin Of Kentucky, Louis A. Krumholz, Stuart E. Neff, Edmond J. Bacon, Jerry S. Parsons, John D. Woodling
KWRRI Research Reports
This report includes work that is an extension of Project No. B-005-KY as reported in Research Report No. 43 of the University of Kentucky Water Resources Institute. That project was initiated in April 1968 as Project No. A-019-KY with principal emphasis on physical, chemical, and biological characteristics of the main stem of the Salt River upstream from the proposed damsite for Taylorsville Lake, an impoundment of about 3, 600 acres at seasonal pool. The report includes descriptions of an additional 13 stations along the stream, bringing to 38 the number of permanent collecting sites.
Values for dissolved oxygen ranged from …
A Preliminary Ecological Study Of Areas To Be Impounded In The Salt River Basin Of Kentucky, Louis A. Krumholz
A Preliminary Ecological Study Of Areas To Be Impounded In The Salt River Basin Of Kentucky, Louis A. Krumholz
KWRRI Research Reports
This report covers work that is an extension of Project No. A-019-KY. A series of 25 sampling stations was established in the mainstream and tributaries of the Salt River that extend from the source of the stream in Boyle County to a few miles below the site of Taylorsville Darn in Spencer County. Sampling for water chemistry and biota was carried out semimonthly. Data on temperature, oxygen, depth, and discharge, along with analyses for cations (Ca, Mg, Fe, Mn) and anions (PO4, NO3, NO2, CO3, HCO3) have been accumulated and …
Final Report Emission Inventory For The State Of Nebraska, The Ibm Corporation Federal Systems Division, Environmental Protection Agency
Final Report Emission Inventory For The State Of Nebraska, The Ibm Corporation Federal Systems Division, Environmental Protection Agency
United States Environmental Protection Agency: Publications
The following report represents the results of the work performed under BOA 68-02-0043, Task Order Number 1 from The Environmental Protection Agency, Air Pollution Control Office. A note of thanks is due to Mr. E. J. Lillis and D. Dunbar of the EPA Project Office and Mr. Peter Culver, the EPA Project Engineer for their assistance and excellent cooperation during the study. A note of special thanks is due to Mr. Gene Robinson of the Nebraska Division of Air Pollution Control without whose efforts successful completion of this task would not have been possible.
Environmental Status Report - January-February-March 1971, Florida Power Corporation
Environmental Status Report - January-February-March 1971, Florida Power Corporation
Reports
The publication of this quarterly issue of Environmental Status Report records the development of Florida Power Corporation's environmental activities since January 1, 1971. This report emphasizes those programs investigating the environs of the Crystal River Nuclear Plant now under construction. However, a progress report of the environmental efforts at the proposed Anclote fossil-fired generating site is included in Appendix G. The locations of the Crystal River and Anclote sites are shown in Figure 1 (page 5)_
Real Property Owned. By The Federal Government In The' State Of Nebraska, U.S. Environmental Protection Agency
Real Property Owned. By The Federal Government In The' State Of Nebraska, U.S. Environmental Protection Agency
United States Environmental Protection Agency: Publications
This inventory report Is a summary compilation of the major facilities of real property owned by the Federal Government in this state. The installations are listed alphabetically by the city in which they are located and the listing includes a brief description of the installation, the agency which operates the facility, the GSA inventory number, the GSA location code, the total floor area of all the buildings and a size classification code. The operating agency and Installation descriptions are those reported to the General Services Administration as of June 30, 1970. Installations with a total floor area less than 1,500 …
The Prairie Naturalist Volume 3, No.2. June, 1971
The Prairie Naturalist Volume 3, No.2. June, 1971
The Prairie Naturalist
EDITORIAL: Environmental Rights ▪ Paul B. Kannowski
RIVER BASINS PLANNING ▪ H. A. Hendrickson
WATER RESOURCE PLANNING GONE AMUCK ▪ Charles H. Stoddard
THE INTERACTION OF CITIZENS' GROUPS AND GOVERNMENT AGENCIES WITH RESPECT TO ENVIRONMENTAL PROBLEMS ▪ Robert L. Burgess
WORDS AND MEANINGS ▪ Paul T. Crary
ENFORCEMENT OF NORTH DAKOTA ENVIRONMENTAL LAWS AND REGULATIONS ▪ Robert E. Beck
BIRDS OBSERVED IN NORTH DAKOTA DURING THE WINTER OF 1970-71 ▪ John T. Lokemoen and Paul E. Springer
STATUS OF CLARK'S NUTCRACKER IN NORTH DAKOTA ▪ Lewis W. Oring and Robert W. Seabloom
WINGED ANTS AS FISH FOOD ▪ Charles H. …