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Articles 8521 - 8550 of 8565
Full-Text Articles in Physical Sciences and Mathematics
Concentration Of Co, In The Air Above A Sugar Beet Field, K.W. Brown, Norman J. Rosenberg
Concentration Of Co, In The Air Above A Sugar Beet Field, K.W. Brown, Norman J. Rosenberg
School of Natural Resources: Faculty Publications
The concentration of CO, in air sampled above a sugar beet crop was measured during July, August, and early September 1966 at Scottsbluff, Nebr. During July the mean daytime concentration decreased from 310 ppm to 283 ppm as the leaf area index increased from 0.8 to 4.0. Only small deviations from the mean daytime Concentration of 283 ppm occurred during the remainder of the season. The mean nocturnal concentration during this period was 320 ppm and was more variable than the daytime concentration. The daily amplitude of concentration averaged 70 ppm and was as great at times as 100 ppm. …
Soil Conservation Handbook, D J. Carder, G W. Spencer, Soil Consevation Service
Soil Conservation Handbook, D J. Carder, G W. Spencer, Soil Consevation Service
Books & book chapters
Soil Conservation means, basically sound land management. With good management the Ste's resources of productive land can be bot only maintained but actually improved. It is a question of deciding the best use for each soil type and situation. Profitable Production must be kept up in changing economic conditions without destroying land assets in the process.
The Economic Value Of Natural Areas For Recreational Hunting, Kenneth Gene Holbrook
The Economic Value Of Natural Areas For Recreational Hunting, Kenneth Gene Holbrook
KWRRI Research Reports
The pressures of population growth, urbanization, and improved transportation are diminishing the availability of quality naturalistic sites for recreation while at the same time producing greater demands for their use. One cause contributing to the reduction in acreage in naturalistic areas is the construction of reservoirs. The recreational hunting value of the naturalistic area to be inundated should be considered as a negative consequence in the economic evaluation of a proposed reservoir site.
This study utilized hunting data collected by the Kentucky Department of Fish and Wildlife, from the 120 Kentucky counties to estimate the economic, value of the average …
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: Staff Research Publications
Ecological studies on the distribution of fairy shrimps have been made from 246 sites in the sandhills region of Nebraska. New records for Nebraska have been established for Artemia salina, Branchinecta campestris, B. lindahli, B. mackini and Cyzicus mexicanus. Seasonal populations of shrimp have been located in habitats containing permanent fish populations. Water mineralization was the dominant environmental condition related to the distribution of phyllopods with sodium and potassium compounds predominating in the strongly alkaline lakes. Several of the Artemia lakes were classified as hydroxide sites. Many of the alkaline ponds, where B. lindahli and B. campestris flourish, are …
The Impact Of Conflicting Uses Of The Coastal Zone On Naval Planning And Policy, Thomas M. Ward Jr.
The Impact Of Conflicting Uses Of The Coastal Zone On Naval Planning And Policy, Thomas M. Ward Jr.
Marine Affairs Theses and Major Papers
A brief review of the origin of the Navy's coastal real estate holdings and a method of approach to analysis of the present conflicts of multiple use of the coastal zone isused to assess the needs for continued use of these holdingsand provide valid arguments for retention of those that are required. The study also presents a method of analysis that could provide a means for anticipating or resolving conflicting uses of Navy held real estate. The pressure created by an increasing population combined with a reduction of the armed forces necessitates a review of all Navy coastal zone property …
The Ocean Resource: A Scenario For Its Control, Ronald Poitras
The Ocean Resource: A Scenario For Its Control, Ronald Poitras
Marine Affairs Theses and Major Papers
As man expands his horizons on planet earth, he is beginning to turn increasingly to the oceans as a source of resources, and at a pace commensurate with the growth of his needs and his technical ability. Traditionally the deep sea has always been a "no man's land," an unlimited source of space to be traversed and used infrequently. A scarcity of natural resources and an abundance of human extensions (i.e. technology) are together making deep ocean seclusion a thing of the past. Increasing use of a particular resource is a limited space sooner or later implies an increasing need …
New Life For Prairie Lakes, Clyde Brashier, T. W. Edminster
New Life For Prairie Lakes, Clyde Brashier, T. W. Edminster
2019: Dr. Clyde Brashier
No abstract provided.
The Agricultural Potential Of Owingup Swamp, C V. Malcolm, L T. Jones, J. P. Fallon
The Agricultural Potential Of Owingup Swamp, C V. Malcolm, L T. Jones, J. P. Fallon
Technical Bulletins
1. Soil Survey of Owingup Swamp
2. Comparison of Owingup and Grasmere Swamps
The two swamps, Owingup and Grasmere, shown on the location map are practically identical with regard to soil conditions. Grasmere Swamp however has been cleared and used for agriculture for some 60 years while Owingup Swamp is as yet unalienated. Soils on both swamps consist of mainly organic diatomaceous clay. The survey reported here was aimed at assessing the agricultural potential of Owingup Swamp in the light of experience gained since the clearing of Grasmere Swamp. Findings of the survey indicate that some 2000 acres at Owingup …
Study To Save Block Island, Designer's News, May 19,1969, Students Of Risd, Risd Archives
Study To Save Block Island, Designer's News, May 19,1969, Students Of Risd, Risd Archives
Ecology and Environment
RISD Landscape Architecture Study to Save Block Island Article from Designer's News, May 19, 1969 student newspaper.
The Effect Of A Large Reservoir On Local Government Revenue And Expenditure, Clyde T. Bates
The Effect Of A Large Reservoir On Local Government Revenue And Expenditure, Clyde T. Bates
KWRRI Research Reports
Development of a large multi-purpose reservoir within the area of their jurisdiction may affect property ta.x revenue and expenditure of county governments and school districts. Privately owned land sold to a federally sponsored reservoir is not subject to property taxes because of the doctrine of intergovernmental immunity. Local officials often assume that this loss of assessment will reduce their tax revenue and thereby their fiscal ability to provide an acceptable level of government services. They may also expect the influx of construction workers or the disruption of existing facilities to increase the cost of providing these services. The study approaches …
Patterns Of Land Use Change Around A Large Reservoir, Billy R. Prebble
Patterns Of Land Use Change Around A Large Reservoir, Billy R. Prebble
KWRRI Research Reports
Reservoirs are built to control floods, provide water for irrigation and municipal supply, generate electric power, augment low flows for navigation and water quality control, and provide improved fishing and recreation opportunity. A reservoir is justified if the benefit it provides to society exceeds the cost to develop it. Much research has been done to determine the benefit of a water resources development to society as a whole. Some research has explored the benefit of such a facility to a region. Very little research exists on the effects of a reservoir on the immediately surrounding area.
It seems reasonable that …
Economic Development Of Areas Contiguous To Multipurpose Reservoirs: The Kentucky-Tennessee Experience, Michael B. Hargrove
Economic Development Of Areas Contiguous To Multipurpose Reservoirs: The Kentucky-Tennessee Experience, Michael B. Hargrove
KWRRI Research Reports
This study analyzes the effects of multi-purpose reservoir projects on the economic development of areas contiguous to the dam and reservoir. The study concentrates on the development potential in a humid region where the provision of agricultural water is not critical to the economy. Can a reservoir project be a major part of a development program for a local area? How can the favorable effects of the project on the contiguous area be increased? These questions are answered by this study.
The study is divided into three major phases. The first phase is a theoretical analysis of the determinants of …
Economic Analysis Of Alternative Flood Control Measures, L. Douglas James, Thomas M. Rachford, James Ray Villines, Clyde R. Dempsey, James Norris Cline, Carlos Fix Miller
Economic Analysis Of Alternative Flood Control Measures, L. Douglas James, Thomas M. Rachford, James Ray Villines, Clyde R. Dempsey, James Norris Cline, Carlos Fix Miller
KWRRI Research Reports
Within the last few years, the growing realization that an effective flood control program must include non-structural measures (land use management and flood proofing) has resulted in Presidential Executive Order 11296 requiring Federal agencies to seek the optimum combination of structural and non-structural measures for flood control. The requirement has created a dilemma. No methodology is available for systematic evaluation of alternative combinations of structural and non-structural measures. Prospective procedures are too time consuming to be feasible under current financial and manpower limitations.
The only way out is to perform much of the planning process by digital computer. With this …
Agroclimatic Calendar For Nebraska, R. E. Neild
Agroclimatic Calendar For Nebraska, R. E. Neild
School of Natural Resources: Faculty Publications
Crops are planted so growth, development and harvest correspond closely to the season most favorable for yield and quality. With exception of fall-seeded small grains and some forages, most Nebraska crops are planted in the spring when temperature and precipitation are increasing.
Definite Plan Report On Southern Nevada Water Project, Nevada (First Stage): Project Development Report, U.S. Bureau Of Reclamation
Definite Plan Report On Southern Nevada Water Project, Nevada (First Stage): Project Development Report, U.S. Bureau Of Reclamation
Publications (WR)
This report presents the results of definite plan studies of the Southern Nevada Water Project in Clark County, southeastern Nevada. Construction of this project was authorized under Public Law 89-292 dated October 22, 1965. Authorization of the Southern Nevada Water Project was based on a project plan outlined in the feasibility report of August 1963 as supplemented in April 1965. The definite plan studies have confirmed the general project plan of the 1963 report as supplemented but some important modifications are now contemplated as explained in Part IV.
The project will be constructed in three stages. Stage development is desirable …
Derivation Of Reservoir Operating Rules By Economic Analysis, Charles O. Dowell
Derivation Of Reservoir Operating Rules By Economic Analysis, Charles O. Dowell
KWRRI Research Reports
The purpose of this study was to develop a methodology for determining an optimum set of reservoir operating rules specifying the of storage space based on the example of Rough River Reservoir, a Corps of Engineers project in Breckinridge and Grayson Counties, Kentucky, and assuming this multipurpose reservoir provides flood control, water supply, and recreation. The operating rules were derived by the method of marginal analysis which uses as its criteria achievement of maximum net benefits from the available storage capacity.
Benefit relationships were derived for each use. The variation of flood control benefits with available flood storage was determined …
Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia
Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Land grading in the South West Irrigation Areas with modern earth moving equipment first commenced in 1949.
The advantages of land grading are well recognised by farmers and this season grading operations were carried out on 208 farms.
Development, Verification, And Use Of Methods To Model Chemical And Thermal Processes Lakes Mead And Powell, Bureau Of Reclamation
Development, Verification, And Use Of Methods To Model Chemical And Thermal Processes Lakes Mead And Powell, Bureau Of Reclamation
Publications (WR)
PURPOSE
The purpose of the proposed research is to quantify the effects that Lakes Mead and Powell have on the salinity in the Colorado River system, and to evaluate changes that cap be made to the operating system of the reservoirs (within legal/institutional constraints) to enhance salt precipitation and/or minimize evaporation within the reservoirs. The effect of any changes (i.e., selective withdrawal uses, pumped storage, etc.) on reservoir evaporation could also be evaluated with a goal of minimizing evaporation. This will be accomplished through the development of a mathematical model of the reservoirs as described below.
BACKGROUND
Two major problems …
The Relationship Of Flooding And Saline Water Tables, Stanley Thomas Smith
The Relationship Of Flooding And Saline Water Tables, Stanley Thomas Smith
Journal of the Department of Agriculture, Western Australia, Series 4
IN Western Australia there are several ways in which salt manifests itself but the most serious and extensive of these is in the valley systems where shallow saline water tables occur.
This type of salt problem is called "valley waterlogging" and occurs in most of the flat valleys throughout the wheatbelt of W.A.
Ammonium Nitrate Blasting Agent (Anfo) For Land Clearing, G A. Greaves
Ammonium Nitrate Blasting Agent (Anfo) For Land Clearing, G A. Greaves
Journal of the Department of Agriculture, Western Australia, Series 4
The introduction of "prilled" AN has revolutionised explosives practice and made possible safer and cheaper methods of blasting.
This article outlines the methods of handling and using ANFO blasting agent for land clearing.
Ultrasonic Tracking Of Migratory Fishes With An Internal Tag, Ross M. Horrall, H. F. Henderson, A. D. Hasler
Ultrasonic Tracking Of Migratory Fishes With An Internal Tag, Ross M. Horrall, H. F. Henderson, A. D. Hasler
School of Natural Resources: Faculty Publications
First paragraph:
A small ultrasonic tag, 9 mm by 40 mm in size, has been developed by members of the fish orientation group at the University of Wisconsin. The tag emits a continuous signal at approximately 65 kc/sec. The signal is received via a directional hydrophone and a high quality communications receiver. Tracking ranges of up to 1 km have been obtained. The placement of the tag is internal: either into the stomach or into the body cavity of the fish. The tags and tracking equipment have been successfully employed in studies on the open water movements and orientation of …
Ground-Water Appraisal Of The Meadow Valley Area, Lincoln And Clark Counties, Nevada, F. Eugene Rush
Ground-Water Appraisal Of The Meadow Valley Area, Lincoln And Clark Counties, Nevada, F. Eugene Rush
Publications (WR)
This report, the 27th in the series of reconnaissance ground-water studies which were initiated following authorization by the I960 Legislature, gives the results of a study of the Meadow Valley area. This area includes eight valleys in southeastern Nevada - - Patterson, Spring, Eagle, Dry, Rose, Panaca, Clover, and Lower Meadow Valley - - all part of the Colorado River drainage system.
This study was made and report prepared by F. Eugene Rush, Geologist for the U. S. Geological Survey.
These reconnaissance ground-water resources surveys make available pertinent information of great and immediate value to many State and Federal agencies. …
Soil Conservation : Build Contour Banks With A Disc Plough, G W. Spencer, D. J. Carder
Soil Conservation : Build Contour Banks With A Disc Plough, G W. Spencer, D. J. Carder
Journal of the Department of Agriculture, Western Australia, Series 4
Heavy earthmoving machinery is not necessary for contouring; most farmers are already equipped to do the job themselves.
This article by soil conservation advisers G. W. Spencer and D. J. Carder tells how to build contour banks with a disc plough.
Dairy Farming In The Busselton-Margaret River District. Part 1. Stage Of Development, R A. Bettenay
Dairy Farming In The Busselton-Margaret River District. Part 1. Stage Of Development, R A. Bettenay
Journal of the Department of Agriculture, Western Australia, Series 4
This article is the first of four in a series reporting a survey of farming practices in the Busselton-Margaret River area.
Besides the development of farms the series will cover farm stocking rates and milk production on farms in the area.
THE survey of farms in the Busselton-Margaret River district began at the end of the 1962 season.
Information on the stage of development of the properties was obtained from 94 farmers during advisory visits.
Firebreaks Without Erosion : Hints To Prevent Firebreak Erosion, Department Of Agriculture, Western Australia
Firebreaks Without Erosion : Hints To Prevent Firebreak Erosion, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
AGRICULTURAL fire risks are now greater than they have been in the past and are steadily increasing with the advance of agriculture in Western Australia.
During the past 20 years the area of cleared arable land and the area under crop have more than doubled.
The area of established pasture is four times as great as it was. Pastures and crops are much more productive —and more liable to carry destructive fires than they were.
Profitable Returns From Saltland, C V. Malcolm
Profitable Returns From Saltland, C V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
The recent saltland survey disclosed that about 305,000 acres of land previously cleared and sown had become salt affected.
This represents a serious loss in production but is offset by the fact that much of the land is capable of producing high yields of good quality fodder.
Colorado River Storage Project, Glen Canyon Unit, Lake Powell, Area And Capacity Tables, Bureau Of Reclamation; United States
Colorado River Storage Project, Glen Canyon Unit, Lake Powell, Area And Capacity Tables, Bureau Of Reclamation; United States
Elusive Documents
No abstract provided.
Bulletin No. 13: What's Happening Along Our Roadsides?, Richard H. Goodwin
Bulletin No. 13: What's Happening Along Our Roadsides?, Richard H. Goodwin
Bulletins
Roadside spray practices in the National Forests, Recommended practices for Connecticu; Survey of what is actually happening. 24 pp.
Plan For The Pilbara, Department Of Agriculture, Western Australia
Plan For The Pilbara, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
A DOUBLE-BARRELLED plan for pasture regeneration and vermin control put into action by the Department of Agriculture this year gives promise for the rehabilitation of the run-down pastoral country in the rugged Pilbara region of Western Australia.
Shellfish Resources Of Washington, Robert Grant Levens
Shellfish Resources Of Washington, Robert Grant Levens
Graduate Student Research Papers
This paper will explore the salt water shellfish resources of Washington State. Particular emphasis will be placed upon the Pacific and Olympia Oysters, the Dungeness Crab, the research being done at Quilcene, and the lesser varieties of shellfish, including shrimp and the hardshell species of clams. The latter includes the littleneck, butter, Manila, and geoduc clams. A major emphasis will be the commercial importance of the shellfish, but the sportsman and the expanding role of Washington as a summer recreation area will not be overlooked.