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Articles 51121 - 51150 of 52381
Full-Text Articles in Physical Sciences and Mathematics
Effects Of Early And Late Irrigation In The Net Productivity Of Oryzopsis Hymenoids In Eastern Idaho, Lorentz C. Pearson
Effects Of Early And Late Irrigation In The Net Productivity Of Oryzopsis Hymenoids In Eastern Idaho, Lorentz C. Pearson
Memorandum
No abstract provided.
Rock Valley Validation Site Report, Frederick B. Turner
Rock Valley Validation Site Report, Frederick B. Turner
Memorandum
No abstract provided.
Growth And Development Of Sitanion Hystrix And Poa Sandergii, M. Hironaka, E. W. Tisdale
Growth And Development Of Sitanion Hystrix And Poa Sandergii, M. Hironaka, E. W. Tisdale
Memorandum
No abstract provided.
Reports Of 1971 Progress Volume 3 Terrestrial Validation Studies Part Ii. Individual Sites, U.S. International Biological Program
Reports Of 1971 Progress Volume 3 Terrestrial Validation Studies Part Ii. Individual Sites, U.S. International Biological Program
Progress reports
No abstract provided.
Reports Of 1971 Progress Volume 1 Central Studies, U.S. International Biological Program
Reports Of 1971 Progress Volume 1 Central Studies, U.S. International Biological Program
Progress reports
No abstract provided.
Reports Of 1971 Progress Volume 5 Aquatic Studies, U.S. International Biological Program
Reports Of 1971 Progress Volume 5 Aquatic Studies, U.S. International Biological Program
Progress reports
No abstract provided.
Abstract Of 1971 Progress Report, U.S. International Biological Program
Abstract Of 1971 Progress Report, U.S. International Biological Program
Progress reports
No abstract provided.
Reports Of 1971 Progress Volume 4 Terrestrial Process Studies, U.S. International Biological Program
Reports Of 1971 Progress Volume 4 Terrestrial Process Studies, U.S. International Biological Program
Progress reports
No abstract provided.
Assimilation, Metabolism And Growth Of Utah Chub, Gila Atraria, F.C. Cheng, R.L. Wallace, T.C. Bjornn, C. Macphee
Assimilation, Metabolism And Growth Of Utah Chub, Gila Atraria, F.C. Cheng, R.L. Wallace, T.C. Bjornn, C. Macphee
Progress reports
No abstract provided.
Reports Of 1971 Progress Volume 2 Terrestrial Validation Studies Part I. Methodological, U.S. International Biological Program
Reports Of 1971 Progress Volume 2 Terrestrial Validation Studies Part I. Methodological, U.S. International Biological Program
Progress reports
No abstract provided.
Dust Storms Cause Yield Losses, Department Of Agriculture, Western Australia, C. H. Trotman
Dust Storms Cause Yield Losses, Department Of Agriculture, Western Australia, C. H. Trotman
Journal of the Department of Agriculture, Western Australia, Series 4
Farmers and research workers are well aware that heavy grazing during summer loosens and exposes soil to the action of strong winds and summer thunder storms. They also realise that dust storms mean soil loss from paddocks, but until now there has been little idea of the effect of these storms on crop yields in subsequent seasons.
The Interspersion Index As A Technique For Evaluation Of Bobwhite Quail Habitat, William L. Baxter, Carl W. Wolfe
The Interspersion Index As A Technique For Evaluation Of Bobwhite Quail Habitat, William L. Baxter, Carl W. Wolfe
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
Some forty years ago, the concept of habitat interspersion was advanced by Aldo Leopold (1931). Indicating then that "we are only on the threshold of an understanding of the ecology of game species," Leopold went on to postulate his law of interspersion which recognized that “game is a phenomenon of edges.” Although the validity of Leopold's premises has been documented both directly and indirectly many times in the past four decades, the complexity and frustration in describing ecological diversity of game range has continued to pose a problem for wildlife managers since 1931.
Research Into Modular Construction, Richard L. Tash
Research Into Modular Construction, Richard L. Tash
Retrospective Theses and Dissertations
No abstract provided.
The Heat Treatment Of Soil By Microwaves To Control Pathogenic Parasitic Fungi, Dean Franklin Rich
The Heat Treatment Of Soil By Microwaves To Control Pathogenic Parasitic Fungi, Dean Franklin Rich
Retrospective Theses and Dissertations
No abstract provided.
Environmental Status Report - July, August, Spetember/October, November, December 1971, Florida Power Corporation
Environmental Status Report - July, August, Spetember/October, November, December 1971, Florida Power Corporation
Reports
The publication of this issue of the Environmental Status Report incorporates the environmental activities of Florida Power Corporation from July to December, 1971. Due to exigencies from the development and publishing of the Crystal River Unit 3 Environmental Report, the July-August-September, 1971 Quarterly is· sue was therefore postponed for inclusion with the October-November-December, 1971 Quarterly issue to provide a composite of the environmental programs and activities for the second half of 1971
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.
Environment And Communiy Organization In Grasslands Of Canyonlands National Park, Edgar F. Kleiner, K. T. Harper
Environment And Communiy Organization In Grasslands Of Canyonlands National Park, Edgar F. Kleiner, K. T. Harper
Canyonlands Research Bibliography
Sixty uniformly distributed stands in adjacent areas, 40 in Virginia Park (virgin) and 20 in Chesler Park (grazed), were analyzed. Cryptogamic and vascular species were recorded; cover was analyzed by the point sampling method, and frequency by means of 25 quadrats (each 0.125 m^2) per stand. The prevalent species (26 in Virginia, 23 in Chesler) were selected on the basis of a constancy-times-frequency index. Interspecific association patterns were determined by means of simple procedures based on quadrat frequency values for each species in the individual stands. Major environmental variables were recorded at each stand, and soil samples from four depths …
Water Resources Of Part Of Canyonlands National Park, Southeastern Utah, C. T. Sumsion, E. L. Bolke
Water Resources Of Part Of Canyonlands National Park, Southeastern Utah, C. T. Sumsion, E. L. Bolke
Canyonlands Research Bibliography
Canyonlands National Park is in about the center of the Canyon Lands section of the Colorado Plateaus physiographic province in southeastern Utah. The part of the park discussed embraces an area of about 400 square miles comprising isolated mesas, precipitous canyons, and dissected broad benches near the confluence of the Green and Colorado Rivers, the only perennial streams in the area. The climate is arid to semiarid; normal annual precipitation ranges from less than 8 to about 10 inches. Potential evapotranspiration is about 41 inches annually.
Geology of the park is characterized by nearly horizontal strata that dip gently northward. …
The Colorado Plateau, Robert Durrenberger
The Colorado Plateau, Robert Durrenberger
Canyonlands Research Bibliography
The Colorado Plateau was one of the last areas in the United States to be developed economically. Before the 1880s it was virtually empty except for Indians. Today the vast scenic and energy resources of the area are under development, and projections for future development are frightening. Problems of land use management are directly related to the fragmented nature of landholdings. Present methods of consolidation are inadequate, and new approaches to the organization of space must be devised if further degradation of the environment is to be prevented.
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 …
Fatty Acids And Hydrocarbons In The Surface Waters Of The York River, John G. Windsor
Fatty Acids And Hydrocarbons In The Surface Waters Of The York River, John G. Windsor
Dissertations, Theses, and Masters Projects
No abstract provided.
Acute Toxicity Of No 6 Fuel Oil To Intertidal Organisms In The Lower York River, Virginia, Jeffrey L. Hyland
Acute Toxicity Of No 6 Fuel Oil To Intertidal Organisms In The Lower York River, Virginia, Jeffrey L. Hyland
Dissertations, Theses, and Masters Projects
No abstract provided.
Optimizing Resistance Coefficients For Large Bed Element Streams, D. E. Overton, Harl E. Judd, C. W. Johnson
Optimizing Resistance Coefficients For Large Bed Element Streams, D. E. Overton, Harl E. Judd, C. W. Johnson
Reports
This is a report of a comparison of Darcy resistance coefficients calculafed for previously reported laboratory data and those calculated for large bed element streams. Large bed element (LBE) streams exist frequently in nature where rocks derived from valley walls or from channels cutting through ancient glacial or fluvial deposits are moved only under conditions of extreme flood. The height of bed elements is a significant part of the mean depth of flow. The stream gradients are high and are quite stable for all but the highest flows.
A National Survey Of Manpower Utilization And Future Needs Of Consulting Engineering Firms Engaged In Water Pollution Control, E. Joe Middlebrooks
A National Survey Of Manpower Utilization And Future Needs Of Consulting Engineering Firms Engaged In Water Pollution Control, E. Joe Middlebrooks
Reports
Introduction: As part of the overall evaluation of manpower needs in the environmental field, a survey of architectural and engineering firms was jointly sponsored by the Consulting Engineers Council, the American Association of Professors in Sanitary Engineering and the Environmental Protection Agency. A questionnaire was mailed to 8,.5. engineering and architectural firms that subscribe to the magazine
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 …
Experimental Study Of Water Hammer In Buried Pvc And Permastran Pipes, Roland W. Jeppson, Gordon H. Flammer, Gary Z. Watters
Experimental Study Of Water Hammer In Buried Pvc And Permastran Pipes, Roland W. Jeppson, Gordon H. Flammer, Gary Z. Watters
Reports
No abstract provided.
A Report On The Condition Of The Gascoyne Catchment, D G. Wilcox, E A. Mckinnon
A Report On The Condition Of The Gascoyne Catchment, D G. Wilcox, E A. Mckinnon
Resource management technical reports
Severe flooding in Carnarvon followed heavy rains on the Gascoyne Catchment in February 1961. The flooding and erosion were extensive enough to suggest that run-off from the catchment was excessive. Lightfoot (1961)* reported that excess run-off was due to degradation of the catchment area. This report will describe the catchment area in terms of the degradation of its rangeland and its susceptibility to erosion.
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.
Development Of Techniques For Distribution Of Baits To Raccoon For Chemosterilant Studies, Richard L. Nelson
Development Of Techniques For Distribution Of Baits To Raccoon For Chemosterilant Studies, Richard L. Nelson
Electronic Theses and Dissertations
Sudan Red IV, Sudan Black B, and demethylchlortetracycline (DMCT) were tested as physiological markers in baits for raccoon (Procyon lotor). DMCT was readily detected in the jawbone of raccoons given 50 mg when examined under an ultraviolet light at period of 7, 30, 75, and 450 days following treatment. Seven days after administering 75 mg of Sudan Red IV, it could not be detected in fat deposits. Sudan Black B, administered in similar dosage, could not be detected at 30 days. A total of 1826 chicken eggs containing 50 mg DMCT was distributed on a 25 square-mile study area between …