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Articles 3391 - 3420 of 3886
Full-Text Articles in Earth Sciences
Agenda: Federal Lands, Laws And Policies And The Development Of Natural Resources: A Short Course, University Of Colorado. School Of Law, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Federal Lands, Laws And Policies And The Development Of Natural Resources: A Short Course, University Of Colorado. School Of Law, University Of Colorado Boulder. Natural Resources Law Center
Federal Lands, Laws and Policies and the Development of Natural Resources: A Short Course (Summer Conference, July 28-August 1)
Even before the [Natural Resources Law] Center was established [in the fall of 1981], the [University of Colorado] School of Law was organizing annual natural resources law summer short courses. To date four programs have been presented:
- July 1980: "Federal Lands, Laws and Policies and the Development of Natural Resources"
- June 1981: "Water Resources Allocation: Laws and Emerging Issues"
- June 1982: "New Sources of Water for Energy Development and Growth: lnterbasin Transfers"
- June 1983: "Groundwater: Allocation, Development and Pollution"
(Reprinted from Resource Law Notes, no. 1, Jan. 1984, at 1.)
Instructors for this conference included University …
Annotated Biobliography Of Remote Sensing For Highway Planning And Natural Resources, An, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor
Annotated Biobliography Of Remote Sensing For Highway Planning And Natural Resources, An, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor
Storrs Agricultural Experiment Station
No abstract provided.
Ground Driven Powered Tillage, Larry G. Wells, E. M. Smith, D. E. Hammett, H. J. Thompson Jr.
Ground Driven Powered Tillage, Larry G. Wells, E. M. Smith, D. E. Hammett, H. J. Thompson Jr.
Biosystems and Agricultural Engineering Faculty Publications
A ground driven powered tillage device is described which utilizes a passive rolling coulter propelled through the soil by a prime mover. The reaction torque imparted by the soil to the coulter is delivered via a torque transfer unit to a powered tillage blade. The tillage blade rotates counter to the direction of the passive rolling coulter and prepares a tilled furrow of some predetermined depth for seed placement and coverage.
Analysis is presented in which the torque developed by a passive rolling coulter engaging the soil is predicted. A relationship is presented for determining the velocity ratio between the …
Atmospheric Implications Of Studies Of Central American Volcanic Eruption Clouds, R. D. Cadle, A. L. Lazrus, B. J. Huebert, L. E. Heidt, William I. Rose, D. C. Woods, Raymond L. Chuan, Richard E. Stoiber, D. B. Smith, Robert A. Zielinski
Atmospheric Implications Of Studies Of Central American Volcanic Eruption Clouds, R. D. Cadle, A. L. Lazrus, B. J. Huebert, L. E. Heidt, William I. Rose, D. C. Woods, Raymond L. Chuan, Richard E. Stoiber, D. B. Smith, Robert A. Zielinski
Department of Geological and Mining Engineering and Sciences Publications
During February 1978 a group of scientists from the National Center for Atmospheric Research, several colleges and universities, the U.S. Geological Survey, and NASA used a specially equipped Beech Queen Air aircraft to make 11 sampling flights in Guatemala through the eruption clouds from the volcanoes Pacaya, Fuego, and Santiguito. Measurements were made of SO42−, SO2, HCl, HF, and 11 cations that were in water-soluble form, on samples collected by a specially designed filter pack. Particle size distributions were obtained with a piezoelectric cascade impactor, and the particles were identified by energy dispersive X ray …
There's Little To Choose Between Scarifier Points, C R. Lester
There's Little To Choose Between Scarifier Points, C R. Lester
Journal of the Department of Agriculture, Western Australia, Series 4
Tests on scarifier points showed that methods of treating them to prolong their life had little effect.
Handbook Of Remote Sensing Imagery Of Connecticut, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor
Handbook Of Remote Sensing Imagery Of Connecticut, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor
Storrs Agricultural Experiment Station
No abstract provided.
Effects Of Surface Drainage On Dryland Salinity, P R. George, T. R. Negus
Effects Of Surface Drainage On Dryland Salinity, P R. George, T. R. Negus
Journal of the Department of Agriculture, Western Australia, Series 4
Areas which are salt-affected are often also flooded. Although flooding is not the basic cause of salinity, surface drainage may improve conditions for plant growth, and this article describes suitable methods
Deep Drainage As A Method Of Treating Saltland, Eric Bettenay
Deep Drainage As A Method Of Treating Saltland, Eric Bettenay
Journal of the Department of Agriculture, Western Australia, Series 4
In some situations, deep drainage may be warranted to return salt-affected land to full production.
This method is being investigated at CSIRO's Yalanbee Experiment Station.
The Response Of Various Soil Strength Indices To Changing Water Content And Bulk Density, Larry G. Wells, O. Treesuwan
The Response Of Various Soil Strength Indices To Changing Water Content And Bulk Density, Larry G. Wells, O. Treesuwan
Biosystems and Agricultural Engineering Faculty Publications
Various soil strength parameters were measured in the laboratory using a bevameter and a recording soil cone penetrometer. Measurements were made at various levels of soil bulk density and water content. Results were discussed in terms of similar published analyses. Two dissimilar methods of predicting vehicular tractive performance were compared and evaluated in terms of potential utility with respect to prediction of soil trafficability.
Predicted And Measured Drainable Porosities For Field Soils, R. W. Skaggs, Larry G. Wells, S. R. Ghate
Predicted And Measured Drainable Porosities For Field Soils, R. W. Skaggs, Larry G. Wells, S. R. Ghate
Biosystems and Agricultural Engineering Faculty Publications
Experiments were conducted on large field cores to determine the relationship between drainage volume and water table depth for five soils. The measured drainage volumes were less than predicted from the soil water characteristics for three soils, but were in good agreement for the other two. Drainable porosities were calculated from both theoretical and experimental drainage volume-water table depth relationships by assuming that the unsaturated zone is essentially 'drained to equilibrium, with the water table. The experimental drainable porosities thus obtained were less than predicted.
Drainable porosities for drainage in two-dimensions were calculated from experimental results for one-dimension by assuming …
An Annotated Bibliography Of Ocs Documents In Maine, Maine State Planning Office
An Annotated Bibliography Of Ocs Documents In Maine, Maine State Planning Office
Maine Collection
An Annotated Bibliography of OCS Documents in Maine
Outer Continental Shelf Memorandum 1
Compiled by Edward H. Shenton & Charles S. Colgan
Maine Coastal Program, Maine State Planning Office, Augusta, Maine, 1977.
Contents: 1. Introduction / 2. OCS - General / 3. OCS - Federal Regulations / 4. Economic Aspects / 5. Environmental Studies / 6. Oil Spills - Effects and Studies / 7. Onshore Effects / 8. The North Sea Experience / 9. Legal Aspects / 10. Petroleum Drilling Technology
Vertical Drainage In Field Cores, Larry G. Wells, R. W. Skaggs
Vertical Drainage In Field Cores, Larry G. Wells, R. W. Skaggs
Biosystems and Agricultural Engineering Faculty Publications
No abstract provided.
Test Sites For Farm Dams, Department Of Agriculture, Western Australia
Test Sites For Farm Dams, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
A short article outlining procedures for testing potential dam sites.
Design Standards For Farm Surface Water Supplies, J L. Frith
Design Standards For Farm Surface Water Supplies, J L. Frith
Journal of the Department of Agriculture, Western Australia, Series 4
Design is usually concerned with getting adequate return from limited recources. Farm dams which dry up represent dam failure. Less seriously, so too do dams which, although not drying out, never fill; they waste a recource.
Geophysical Approaches To Coal Exploration, Gerald B. Rupert
Geophysical Approaches To Coal Exploration, Gerald B. Rupert
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The exploration for minerals by geophysical means has been confined largely to the search for hydrocarbons and metallics while applications to coal exploration are somewhat limited. However, the surface reflection seismic technique has been successfully applied not only to delineating coal deposits but also as a tool in mine exploitation. Furthermore, channel waves generated underground have demonstrated potential in detecting the presence of faults in advance of the coal face and Vibroisis* experiments have been conducted whereby abandoned underground workings have been detected by surface seismic arrays. Examples of all of the preceeding are presented and discussed.
Efficiency Of Sprinkler Irrigation Systems, T C. Calder
Efficiency Of Sprinkler Irrigation Systems, T C. Calder
Journal of the Department of Agriculture, Western Australia, Series 4
Shallow-rooted vegetable crops growing on sandy soils in hot, often windy summer weather, pose a difficult watering problem for most Western Australian vegetable growers.
Irregularities in wetting patterns are common. Wind effects are seldom taken into account in system design. The increasing popularity of knocker-type sprinklers makes these considerations particularily important.
Upward Water Movement In Field Cores, Larry G. Wells, R. W. Skaggs
Upward Water Movement In Field Cores, Larry G. Wells, R. W. Skaggs
Biosystems and Agricultural Engineering Faculty Publications
No abstract provided.
Bulletin 3933 - Trickle Irrigation For Home Gardens, K Cole
Bulletin 3933 - Trickle Irrigation For Home Gardens, K Cole
Bulletins - 3000 - 3999
The use of trickle irrigation in the home garden can save money, time and water.
Trickle irrigation is a concept first used in glasshouses in England, then applied to field crops in Israel and developed and refined in Australia and America. Today it is widely used in orchards, vineyards, vegetable gardens and now has gained wide acceptance in the growing of ornamental plants.
Any good trickle system uses small quantities of water over an extended period of time. In the home garden, flows of 2.25 litres to 4.5 litres per hour are usual though for small shrubs lesser amounts may …
Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin
Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin
Nebraska Agricultural Experiment Station: Historical Research Bulletins
This bulletin describes nutrient and energy composition of beef cattle waste fractions as a function of the ration roughage level and type of feedlot. Results can be used to plan engineering system approaches and research to develop handling and processing equipment necessary for recovery of the most valuable portion of waste.
Drought Effects On Wheat Cultivars Using Trickle Irrigation, R N. Weir
Drought Effects On Wheat Cultivars Using Trickle Irrigation, R N. Weir
Experimental Summaries - Plant Research
Trial 74M32 - The trial was aimed at - 1. Looking for cultivar differences in drought tolerance: particularly involving Gamenya and Insignia. 2. Considering trickle irrigation as a means of controlled water application. Four cultivars were sown at the end of July in salmon gum soil at Merredin. Drought effects on four wheat cultivars in controlled environment Trial 74GL8 - This work was aimed at assessing the performance of the cultivars Gamenya, Gambee, Darkan and Insignia under controlled moisture stress.
A Numerical, Time Domain Solution For The Response Of A Gimbal Supported Gyro, Floyd Stanley Hall
A Numerical, Time Domain Solution For The Response Of A Gimbal Supported Gyro, Floyd Stanley Hall
Doctoral Dissertations
"This paper develops an algorithm to generate a numerical solution for the response of a gimbal supported gyro to arbitrary forcing functions and base motion, and includes the normal parasitic effects of bearing friction, viscous pivot damping, and pivot spring constants. There are relatively few restrictions on gyro and gimbal structure geometry. Solution accuracy is limited only by the computing machine accuracy; the algorithm being an explicit function of the input data. The algorithm is fast and requires only a moderate amount of computer memory"--Abstract, page ii.
The Average Dissipation Curve Of An Attenuative Layered Earth Medium, Joong Hee Chun
The Average Dissipation Curve Of An Attenuative Layered Earth Medium, Joong Hee Chun
Doctoral Dissertations
"A feasible method of estimating the attenuative properties of a layered earth medium from a reflection seismogram has been developed. An average attenuation factor of n layers in the least squares sense is designated as ß and its usefulness in real applications is investigated. Techniques of extracting dissipation factors from both noise free and noisy reflection seismic traces are discussed. In order to describe the change of the factors with an increase of depth, an average dissipation curve the form of which is similar to the average velocity of layered medium is also introduced. Both the ß and the average …
Umr Journal: Alaska -- Its Mineral Potentials And Environmental Challenges, University Of Missouri--Rolla
Umr Journal: Alaska -- Its Mineral Potentials And Environmental Challenges, University Of Missouri--Rolla
UMR Journal -- V. H. McNutt Colloquium Series
No abstract provided.
Arctic Ecology: A Decade Of Experience, John F. Schindler
Arctic Ecology: A Decade Of Experience, John F. Schindler
UMR Journal -- V. H. McNutt Colloquium Series
A quick glance at the title of this presentation and the reader braces himself for another antipollution or “save-the-sod” type of discourse that has become so popular these days. I do not wish to detract from the importance or the need for such efforts but I would like to address myself to the the broader meaning of the term.
Ecology--the word comes from the Greek root “oikos” which means house or household. What I’d like to do is to tell you about this “house” I’ve been living in for the past 10 years.
The Environmental Challenges Facing Taps, A. V. Cardin
The Environmental Challenges Facing Taps, A. V. Cardin
UMR Journal -- V. H. McNutt Colloquium Series
Before the potential benefits of the recent oil discoveries on the North Slope of Alaska can be realized, the oil must be transported to refining and marketing areas. The Alyeska Pipeline Service Company has the responsibility for the first step in this transportation—to design and construct the Trans Alaska Pipeline System. We will pipe the oil from the discovery areas near Prudhoe Bay to an ice-free, deep-sea tanker loading terminal at Valdez of the South Coast of Alaska. From Valdez the oil will be transported to the West Coast by tankers. This is the most feasible system of a number …
The Environmental Challenges Of Alaskan Mineral Development, Earl T. Hayes
The Environmental Challenges Of Alaskan Mineral Development, Earl T. Hayes
UMR Journal -- V. H. McNutt Colloquium Series
To meet the challenges and to develop Alaska as a source of mineral and fuel resources that are essential to all of us, we must conduct the research and planning necessary to see that the environment is not abused. We cannot allow ourselves the luxury of thinking that we alone know what is best for Alaska. We must strive for cooperation -- cooperation between government and industry; between Federal and State governments; between the doer and the dreamer; and between the engineer and the ecologist. Remember, the quality of what we do today will determine the quality of Alaska in …
Mineral Potential Of Arctic Canada, R. G. Mccrossan, R. M. Procter
Mineral Potential Of Arctic Canada, R. G. Mccrossan, R. M. Procter
UMR Journal -- V. H. McNutt Colloquium Series
Canada is on the threshold of a major new phase in the development of its Arctic resources. The Prudhoe Bay discovery triggered a boom in northern petroleum exploration that is just getting into high gear this year. Mining activity also has greatly expanded in the last few years with some 73 active exploration programs underway and several large new mines just coming into production. The size of these ventures is indicated by ore reserves of two lead-zinc mines to the value of 900 million dollars at Pine Point in southern Northwest Territories, and 1.2 billion dollars at the Anvil property …
Arctic Pipelining -- Tough, Costly, But Feasible, William H. Pearn
Arctic Pipelining -- Tough, Costly, But Feasible, William H. Pearn
UMR Journal -- V. H. McNutt Colloquium Series
The development of vitally important Arctic petroleum resources presents new and interesting challenges. Although the answers to some questions will undoubtedly undoubtedly go unresolved until considerable operating experience has accrued, we can improve our present insight through an awareness of the work performed by others under similar conditions. This presentation focuses on Soviet pipelining experience in arctic and subarctic regions of Siberia.
Drilling Problems Associated With Arctic Minerals, Robert L. Parker
Drilling Problems Associated With Arctic Minerals, Robert L. Parker
UMR Journal -- V. H. McNutt Colloquium Series
With major involvements in Alaska, the experience gained from these operations reflect the success of talented personnel in meeting the challenges of climate, equipment, logistics, perma-frost, etc. Real concern stems from present delays in the Arctic program due to financing involved as well as increasing dependency of the United States upon these reserves in today’s market and supply situation.
Arctic Oil And The S.S. Manhattan, Russell H. Venn
Arctic Oil And The S.S. Manhattan, Russell H. Venn
UMR Journal -- V. H. McNutt Colloquium Series
The discovery of oil on Alaska’s North Slope in 1968 not only focused attention on that remote part of our world, it set the stage for one of the most exciting and significant scientific expeditions of our time—the voyage of the ice breaking tanker SS Manhattan through the Northwest Passage.
In the space available I would like to discuss with you that historic expedition, how it came to be, and comment on the results, as we see them.