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Articles 24061 - 24090 of 24562

Full-Text Articles in Physical Sciences and Mathematics

Der Stand Der Hydrobiologischen Forschungen In Der Mongolischen Volksrepublik, Ayuur Dulmaa Jan 1981

Der Stand Der Hydrobiologischen Forschungen In Der Mongolischen Volksrepublik, Ayuur Dulmaa

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Die Entwicklung der Hydrobiologie in der MVR vollzog sich unter ständiger Orientierung an den volkswirtschaftlichen Interessen des Landes. Deshalb wurde neben grundlegenden Forschungen zu Fauna und Ökologie der Gewässer besonderes Gewicht auf die Akklimutisierung von Nutzfischen gelegt. Die dazu notwendigen Kenntnisse der hydrobiologisch bisher weitgehend unerforschten Seen der Mongolei erbrachten mehrjährige Expeditionen in verschiedenen Gebieten des Landes. Den gemeinsamen Biologischen Chövsgöl-Expeditionen der Universitäten Irkutsk und Ulan-Balor kommt dabei eine besondere Rolle zu. Am See Chövsgöl entstand auch die erste hydrobiologische Station der MVR. Die rasche Entfaltung der Hydrobiologie in den letzten zwanzig Jahren dokumentiert eine Reihe bedeutender wissenschaftlicher Publikationen ebenso …


Ua66/8/2 Climate Of Farmers, Kentucky, Wku Kentucky Climate Center, Glen Conner, Mark Simpson, Douglas Harper, Cliff Hardin Jan 1981

Ua66/8/2 Climate Of Farmers, Kentucky, Wku Kentucky Climate Center, Glen Conner, Mark Simpson, Douglas Harper, Cliff Hardin

WKU Archives Records

Climatological summary of weather and temperatures for Farmers, Kentucky from 1951 to 1980.


Ua66/8/2 Climate Of Madisonville, Kentucky, Wku Kentucky Climate Center, Glen Conner, Mark Simpson, Douglas Harper Jan 1981

Ua66/8/2 Climate Of Madisonville, Kentucky, Wku Kentucky Climate Center, Glen Conner, Mark Simpson, Douglas Harper

WKU Archives Records

Climatological summary of weather and temperatures for Madisonville, Kentucky from 1951 to 1980.


Ua66/8/2 Climate Of Mammoth Cave Kentucky, Wku Kentucky Climate Center, Glen Conner, Mark Simpson, Douglas Harper Jan 1981

Ua66/8/2 Climate Of Mammoth Cave Kentucky, Wku Kentucky Climate Center, Glen Conner, Mark Simpson, Douglas Harper

WKU Archives Records

Climatological summary of weather and temperatures for Mammoth Cave from 1951 to 1980.


Ua66/8/2 Climate Of Pikeville, Kentucky, Wku Kentucky Climate Center, Glen Conner, Tom Feeney, Douglas Harper Jan 1981

Ua66/8/2 Climate Of Pikeville, Kentucky, Wku Kentucky Climate Center, Glen Conner, Tom Feeney, Douglas Harper

WKU Archives Records

Climatological summary of weather and temperatures for Pikeville, Kentucky between 1951 and 1980.


Ua66/8/2 Climate Of Maysville, Kentucky, Wku Kentucky Climate Center, Glen Conner, Kevin Brown, Douglas Harper Jan 1981

Ua66/8/2 Climate Of Maysville, Kentucky, Wku Kentucky Climate Center, Glen Conner, Kevin Brown, Douglas Harper

WKU Archives Records

Climatological summary of weather and temperatures for Maysville, Kentucky from 1951 to 1980.


Ua66/8/2 Climate Of Owensboro, Kentucky, Wku Kentucky Climate Center, Glen Conner, Tom Feeney, Douglas Harper Jan 1981

Ua66/8/2 Climate Of Owensboro, Kentucky, Wku Kentucky Climate Center, Glen Conner, Tom Feeney, Douglas Harper

WKU Archives Records

Climatological summary of weather and temperatures for Owensboro, Kentucky from 1951 to 1980


Ua66/8/2 Climate Of London, Kentucky, Wku Kentucky Climate Center, Glen Conner, Mark Simpson, Douglas Harper Jan 1981

Ua66/8/2 Climate Of London, Kentucky, Wku Kentucky Climate Center, Glen Conner, Mark Simpson, Douglas Harper

WKU Archives Records

Climatological summary of weather and temperatures for London, Kentucky from 1954 to 1980.


Accelerated Mahaweli Programme (Amp) And Dry Zone Development: Some Aspects Of Settlement : Report Number Three, Thayer Scudder, Institute For Development Anthropology (Binghamton, N.Y.) Jan 1981

Accelerated Mahaweli Programme (Amp) And Dry Zone Development: Some Aspects Of Settlement : Report Number Three, Thayer Scudder, Institute For Development Anthropology (Binghamton, N.Y.)

Institute for Development Anthropology Papers

No abstract provided.


Reproductive Biology And Recreational Fishery For Spotted Seatrout, Cynoscion Nebulosus, In The Chesapeake Bay Area, Nancy J. Brown Jan 1981

Reproductive Biology And Recreational Fishery For Spotted Seatrout, Cynoscion Nebulosus, In The Chesapeake Bay Area, Nancy J. Brown

Dissertations, Theses, and Masters Projects

No abstract provided.


The Socioeconomic And Fisheries Characteristics Of Virginia's Commercial Sport Fishing Industry, Anne R. Marshall Jan 1981

The Socioeconomic And Fisheries Characteristics Of Virginia's Commercial Sport Fishing Industry, Anne R. Marshall

Dissertations, Theses, and Masters Projects

No abstract provided.


Behavioral Response Of The Amphipod Gammarus Fasciatus And The Isopod Asellus Communis To Fish (Lepomis Macrochirus) And Dragon Fly (Gomphidae), Bill D. Saunders Jan 1981

Behavioral Response Of The Amphipod Gammarus Fasciatus And The Isopod Asellus Communis To Fish (Lepomis Macrochirus) And Dragon Fly (Gomphidae), Bill D. Saunders

Dissertations, Theses, and Masters Projects

No abstract provided.


Preliminary Inventory Of Lifeline Systems And Evaluation Of Seismic Hazards In Reno And Sparks, Nevada, Barbara Priest Jan 1981

Preliminary Inventory Of Lifeline Systems And Evaluation Of Seismic Hazards In Reno And Sparks, Nevada, Barbara Priest

Dissertations and Theses

The Reno-Sparks community is in a seismically hazardous area. Recent research indicates that a Richter 7.0 or greater magnitude earthquake could affect the area. Many of the emergency and essential facilities are situated in dangerous geological locations and are housed in outdated structures which could be severely damaged in the event of a major earthquake. Detailed site evaluations need to be made with respect to location of new structures and of existing building safety. The 1979 Unified Building Code seismic provisions should be adopted without exception; Nevada Revised Statute 278 .160 needs to be revised to require a seismic safety …


Volume 4, Number 12 (December 1980), The Solar Ocean Energy Liaison Dec 1980

Volume 4, Number 12 (December 1980), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.


Monthly Planet, 1980, December, Mark Gardner, Huxley College Of The Environment, Western Washington University Dec 1980

Monthly Planet, 1980, December, Mark Gardner, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.


Volume 4, Number 11 (November 1980), The Solar Ocean Energy Liaison Nov 1980

Volume 4, Number 11 (November 1980), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.


Arkansas Wood Fuels: A Feasibility Study, Ralph O. Gunderson Oct 1980

Arkansas Wood Fuels: A Feasibility Study, Ralph O. Gunderson

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This report presents estimates of quantities and location of logging residues in Arkansas. Six sites are determined as potential fuel use sites for these residues. Estimates of the demand for wood fuel at these sites are made. The supply and demand for wood fuels are studied to determine the feasibility of utilizing logging residue as a fuel at these six locations in Arkansas.


Cogeneration Of Ethanol From I.C. Engine Powerplants: An Economical And Convenient Method To Supply Process Energy For Ethanol Production, Randall Noon Oct 1980

Cogeneration Of Ethanol From I.C. Engine Powerplants: An Economical And Convenient Method To Supply Process Energy For Ethanol Production, Randall Noon

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

I.C. engine power plants have significant and suitable waste heat for the production of ethanol. Such power plants are often located in conjunction with cattle and grain producing areas, two of the important ingredients for ethanol production. Cogeneration of ethanol from I.C. engines will afford significant production of ethanol without requiring more fuel than is currently used.


Full Food And Fiber Production, James D. Atwood Oct 1980

Full Food And Fiber Production, James D. Atwood

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Included in the Natural Gas Policy Act of 1978 is a section which provides priority treatment for essential agricultural users. The applicability and importance of this Act in maintaining a viable agricultural base in this nation is developed.


Ratepayer Financing Of Solar Thermal Electric Commercial Demonstration Projects, Mark D. Jarmie, Jeff V. Conopask Oct 1980

Ratepayer Financing Of Solar Thermal Electric Commercial Demonstration Projects, Mark D. Jarmie, Jeff V. Conopask

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Commercialization of a new energy supply technology requires demonstration of its feasibility to potential customers at each staqe of development. While small improvements of proven energy supply svstems are usually privately pioneered, larger or more uniaue research projects are often delaved as economic and technical concerns are assuaged through public sector R&D funding. For solar thermal central receivers, even though their technical viability has been tested on a small scale, acceptance by utilities will require full-scale field experiments and commercial-sized demonstration plants.


Wood Fuels In Power Generation, Yildirim Omurtag, Larry Wetzel, Michael Mcevilly Oct 1980

Wood Fuels In Power Generation, Yildirim Omurtag, Larry Wetzel, Michael Mcevilly

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

In order for wood to be considered a feasible energy source for power generation, it must prove to be economical, meet society's pollution criteria, and provide sufficient energy to meet its regional demand applications or requirements. This report looks at wood's availability, its potential as a fuel source, the different methods of energy conversion, and lastly, submits conclusions and recommendations concerning wood-fueled power generation.

The information and background was supplied and supported by actual application, government publications and documentations, and other sources. The availability report includes living biomass, wood residues, and potential biomass expansion. Once availability was determined, the portion …


Rate Of Return Regulatory Policy -- The Bane Of Electric Utilities?, Charles David Laderoute Oct 1980

Rate Of Return Regulatory Policy -- The Bane Of Electric Utilities?, Charles David Laderoute

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

In the past,rate of return regulation served to the advantage of electric utility stockholders. Today this is no longer the case. Furthermore, owners cannot assume that utility management can or will work totally in their behalf. As a result, this paper presents as its main thesis that utility stockholders should band together into advocacy groups to support their right to a fair rate of return.


Pipeline Gathering System Operations Model, Mark E. Ryan Oct 1980

Pipeline Gathering System Operations Model, Mark E. Ryan

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

A computer model to aid in the analysis of pipeline gathering system operations has been developed. The model simulates the actual daily operation of the gathering system, on a task by task basis, taking into account terrain, climate, and facility breakdowns. The model can be used to project operating requirements for new systems or analyze problems in existing systems.


The Price Of Oil, R. W. Clack Oct 1980

The Price Of Oil, R. W. Clack

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

An examination of major forces in the petroleum market with primary emphasis on the decade of the 1970s. The market force (s) responsible for the factor-of-ten increase in the price of crude oil is isolated, if not identified. The market's "message" is set forth for energy policy planners.


Amorphous Silicon Solar Cells: A Review, Robert D. Engelken, Patrick L. Cole Oct 1980

Amorphous Silicon Solar Cells: A Review, Robert D. Engelken, Patrick L. Cole

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Recent developments in the production and study of the properties of amorphous silicon containing hydrogen and fluorine impurities are reviewed. Especially emphasized are the properties of the material in regard to its photovoltaic potential and the roles of hydrogen and fluorine in modifying such properties as band gap and mobility from those of the pure amorphous and crystalline material.


The Regulatory Nemesis, K. Daniel Hinkle Oct 1980

The Regulatory Nemesis, K. Daniel Hinkle

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Energy sources are truly regulated from the bowels of the earth to the flame tip. Local, state and federal governments, whether by design or blind ineptitude, have created a maze of administrative regulations that affect the development of both current and future energy sources. Rather than discuss regulatory horror stories, it is the purpose of this paper to discuss the impacts of this maze of regulations on current and alternate energy sources.

The first section will review 16 federal acts that make up the regulatory nemesis. The second section will review an example of the maze in action on a …


Microprocessor Based Control For Wind Turbines, Mubde Absi, Curtis Dodd Oct 1980

Microprocessor Based Control For Wind Turbines, Mubde Absi, Curtis Dodd

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper will discuss the design of a microprocessor based control system for a Vertical Axis Wind Turbine (VAWT). A control philosophy is developed and the reasons for a microprocessor control are discussed.


Entropy Based Analytic Techniques, John O. Dow Oct 1980

Entropy Based Analytic Techniques, John O. Dow

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The study of energy supply futures is simplified when the end use of this energy is included in the analyses. The various supply and end use opportunities can be evaluated against a standard basis with the analytic techniques discussed here. A simplified theoretical background for these techniques is given and a wide range of energy supply and end use situations to which the techniques apply is presented.


Photovoltaic Performance With Concentration Theory And Experiment, M. H. Cobble, R. M. Wabrek, E. Lumsdaine Oct 1980

Photovoltaic Performance With Concentration Theory And Experiment, M. H. Cobble, R. M. Wabrek, E. Lumsdaine

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

A model of a photovoltaic cell having a resistance in series with the load, for use with solar concentration, has been analyzed and tested over a range of concentrations.


Use Of Ailerons To Improve Control Of Large Wind Turbines, Melvin H. Snyder, W. H. Wentz Jr., John T. Calhoun Oct 1980

Use Of Ailerons To Improve Control Of Large Wind Turbines, Melvin H. Snyder, W. H. Wentz Jr., John T. Calhoun

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Studies have been conducted to determine feasibility of using aileron or spoiler controls as alternates to pitch control for large horizontal axis wind turbines. Results of the study show that either ailerons or spoilers can provide control necessary to limit turbine power in high wind conditions. An aileron system is recommended for the present application, based upon the ability of ailerons to provide self-starting and added power at low wind speed conditions.