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Articles 1 - 30 of 466
Full-Text Articles in Physical Sciences and Mathematics
Impurity Photomagnetoelectric Effect: Application To Semi-Insulating Gaas, David C. Look
Impurity Photomagnetoelectric Effect: Application To Semi-Insulating Gaas, David C. Look
Physics Faculty Publications
The theories of the photomagnetoelectric (PME) and photoconductivity (PC) effects in semiconductors are extended to include unequal excitation rates of holes and electrons, as might be expected from impurity photo-excitation. The results are applied to two semi-insulating Cr-doped GaAs crystals, which exhibit mixed conductivity. It is seen that the PC and PME effects give complementary information on the holes and electrons. In the impurity excitation region the PME current responds strongly to changes in the absorption coefficient, and provides a convenient way to study this quantity.
Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore
Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore
Technical Reports
No abstract provided.
Ellpack Distribution Guide, Ronald F. Boisvert
Ellpack Distribution Guide, Ronald F. Boisvert
Department of Computer Science Technical Reports
No abstract provided.
Observation Of Davydov Splitting In Pts Polydiacetylene Crystal Spectra, Hans Muller, Craig J. Eckhardt
Observation Of Davydov Splitting In Pts Polydiacetylene Crystal Spectra, Hans Muller, Craig J. Eckhardt
Craig J. Eckhardt Publications
The electronic spectra of polydiacetylene crystals have often been typified by poly-2, 4-hexadiyne-1, 6-diol-bis-(p-toluene sulfonate) (PTS). The spectra of crystals of this polydiacetylene have been unique in that they have displayed a pronounced “doubling” of the 300 K spectral bands at temperature below 170 K. The reflection bands are also observed to undergo a continuous red shift with continued decrease of temperature. The reflection band observed at lowest energy at 300 K is resolved at 77 K into two clearly separated bands at 15,700 cm-1 (Ib) and 16,050 cm-1(IIb). A recent study by modulated piezoreflection …
Volume 1, Number 5 (December 1977), The Otec Liaison
Volume 1, Number 5 (December 1977), The Otec Liaison
The OTEC Liaison
No abstract provided.
An Extension Trapper Program, Jerry Riedel
An Extension Trapper Program, Jerry Riedel
Great Plains Wildlife Damage Control Workshop Proceedings
South Dakota's Extension Trapping Program originated in July 1971 when the Department of Game, Fish and Parks initiated this type of animal damage control program for the eastern one-half of South Dakota. The funding for this program is derived by assessing a surtax on all farmers and ranchers at a rate of 1 cent per head on all cattle and 4 cent per head on all sheep. The monies gained here is then annually matched by the Game, Fish and Parks through hunting, fishing and trapping license by the Game, Fish and Parks. However, for the last two years a …
Brief Summary Of Prebaiting Study For Prairie Dog Control, Ken Seyler
Brief Summary Of Prebaiting Study For Prairie Dog Control, Ken Seyler
Great Plains Wildlife Damage Control Workshop Proceedings
Attached are two tables summarizing data collected during a pre-baiting study for prairie dog control. The study was conducted in the Pryor, Montana area of Big Horn County, July 13-21, 1977, and in the Tongue River area of Custer County, Montana, August 24-September 3, 1977, and October 17-24, 1977. Applications of strychnine oats (Sebesta's .44%) and zinc phosphide oats (U.S. Fish and Wildlife Service, Pocatello Suppy Depot, 2%) with and without prebait (steamrolled oats) were compared for effectiveness in the control of prairie dogs.
Table Of Contents
Great Plains Wildlife Damage Control Workshop Proceedings
Table of Contents
Trapper Education And Furbearer Management, Edward K. Boggess
Trapper Education And Furbearer Management, Edward K. Boggess
Great Plains Wildlife Damage Control Workshop Proceedings
Modern concepts of furbearer harvest on a controlled, sustained-yield basis are in accordance with recognized principles of wildlife management and natural resource conservation. Steel traps, in the hands of private citizens and regulated by state fish and game agencies, have been the primary tools used in this country for managing furbearers. Fur resource managers recognize that traps are important tools not only in furbearer management, but also in some programs of wildlife damage or disease control. Traps also provide a major source of outdoor recreation for many people.
The Use Of Aversive Agents For Predator Control, M.P. Botkin
The Use Of Aversive Agents For Predator Control, M.P. Botkin
Great Plains Wildlife Damage Control Workshop Proceedings
The studies have continued in the search for potentially aversive compounds and mixtures. To date, undecenovanillylamide is the most effective substance found and is most effective in a mixture with p-dichlorobenzene. Three materials which have been tested actually appear to stimulate attack by coyotes on the treated animal. These are: Skatol (a fecal compound), Naphthalene and Thiomalic acid ( a foul sulpher-like odor).
The Extension Approach To Wildlife Damage, Dr. H.G. Geyer
The Extension Approach To Wildlife Damage, Dr. H.G. Geyer
Great Plains Wildlife Damage Control Workshop Proceedings
The Extension Service is the educational arm of the U.S. Department of Agriculture. It is recognized as the largest, most successful informal educational organization in the world. Funded and guided by a partnership of federal, state, and local governments, it delivers information to help people help themselves through the land-grant university system. Programs embrace broad categories of agriculture, natural resources and environment, home economics, 4-H and other youth, and ocmmunity resource development. Extension programs are non-political, objective, and based on factual information obtained from university, government, and other sources to hellp people make their own decisions. Extension is also unique …
Usda Research On Impacts Of Predation, Russell L. Gum, Richard S. Magleby
Usda Research On Impacts Of Predation, Russell L. Gum, Richard S. Magleby
Great Plains Wildlife Damage Control Workshop Proceedings
This research by the U.S. Department of Agriculture, Economic Research Service, was done at the direct request of Congress, and with special funding in fiscal years 1974 and 1975. Basic questions guiding the research were: 1. How sizable are predation losses? How many producers are effected? 2. What effect has predation had on the decline of the sheep industry? 3. What are benefits and cost of predator control programs?
The Effects Of Coyote Control Operations On Non-Target Species In New Mexico, Gary Lee Nunley
The Effects Of Coyote Control Operations On Non-Target Species In New Mexico, Gary Lee Nunley
Great Plains Wildlife Damage Control Workshop Proceedings
In February of 1972 the use of compound 1080, sodium cyanide, and strychnine in Federal coyote control programs and on Federal lands was halted as directed by Executive Order 11643. Shortly thereafter, the Environmental Protection Agency cancelled the registration of these same toxicants as used in predator control. These actions were taken at the recommendation of the Advisory Committee on Predator Control in their report to the Council of Environmental Quality and to the Department of the Interior.
Depredations Control Research Of The U.S. Fish And Wildlife Service, Denver Wildlife Research Center, James R. Tigner
Depredations Control Research Of The U.S. Fish And Wildlife Service, Denver Wildlife Research Center, James R. Tigner
Great Plains Wildlife Damage Control Workshop Proceedings
Research to control predator depredations is one of three projects within the Section of Predator Damage. The project is directed from Denver, with several biologists and technicians at field stations located in Twin Falls, Idaho; Uvalde, Texas; and Rawlins, Wyoming, as well as in Denver. This is a brief summary of our efforts during the past 12 months and should be considered an informal progress report.
A Mammalogist's View Of Current Mammal Damage Control Trends, Sydney Anderson
A Mammalogist's View Of Current Mammal Damage Control Trends, Sydney Anderson
Great Plains Wildlife Damage Control Workshop Proceedings
Different mammalogists have different views on this subject. The following are mine. Historically, there was considerable controversy in the American Society of Mammalogists around 1930 on the question of predator control. The primary reasons for these different views, then and also now, are different value judgements. Science without non-scientific value judgements is not sufficient to lead one to a single view or set of views. Science embodies certain value judgments such as honesty, the public value of human knowledge, objectivity, the desirability of formulating testable hypotheses, and the examination of all relevant and available evidence. Scientists are human beings and …
Predation On Furbearers And Management Alternatives, Ronald D. Andrews
Predation On Furbearers And Management Alternatives, Ronald D. Andrews
Great Plains Wildlife Damage Control Workshop Proceedings
Most of the presentations from other members of the panel have discussed direct predation of one animal upon another with evidence and data to support it. Their presentations indicate that in some instances, considerable data has been collected that substantiates the fact that predation has been and can be a limiting factor in sustaining certain local animal populations. Suggestions have also been made concerning management alternatives that might help to reduce this predatory impact when desirable. Predation on furbearers and its impact is considerably more ambiguous and abstract. Facts and data concerning significant predation on furbearers, except for mink on …
Erratum: A Comparison Of The Rough Sphere Rotational Diffusion Model With Experimental Results For Liquid Methyl Iodide, Scott Whittenburg
Erratum: A Comparison Of The Rough Sphere Rotational Diffusion Model With Experimental Results For Liquid Methyl Iodide, Scott Whittenburg
Chemistry Faculty Publications
No abstract provided.
The Electrical Characterization Of Semi‐Insulating Gaas: A Correlation With Mass‐Spectrographic Analysis, David C. Look
The Electrical Characterization Of Semi‐Insulating Gaas: A Correlation With Mass‐Spectrographic Analysis, David C. Look
Physics Faculty Publications
The room‐temperature electrical properties of 28 semi‐insulating GaAs crystals have been determined by using a mixed‐conductivity analysis. It is shown that for most of these samples, such an analysis gives good accuracy for the electron mobility μn and electron concentration n, but poorer accuracy for the hole mobility μp, hole concentration p, and intrinsic concentration ni. The intrinsic concentration is determined at 296 °K to be ni ≈ (1.7±0.4) ×106 cm−3, which compares favorably with the theoretical value deduced from the band gap and the effective masses. From a …
Proceedings Of The Third Great Plains Wildlife Damage Control Workshop, F. Robert Henderson
Proceedings Of The Third Great Plains Wildlife Damage Control Workshop, F. Robert Henderson
Great Plains Wildlife Damage Control Workshop Proceedings
Agenda Roster
Long-Term Education Program In Predator Damage And Damage Control, Major L. Boddicker
Long-Term Education Program In Predator Damage And Damage Control, Major L. Boddicker
Great Plains Wildlife Damage Control Workshop Proceedings
The models for long-term education programs in predator damage and damage control are the Missouri and Kansas systems. We owe a great deal of gratitude to the founders and successors of these programs. most of the other efforts going today in the Extension animal damage control programs are modifications of those efforts.
Organizing And Motivating Public Groups To Support Rational And Positive Wildlife Management Efforts, Major L. Boddicker
Organizing And Motivating Public Groups To Support Rational And Positive Wildlife Management Efforts, Major L. Boddicker
Great Plains Wildlife Damage Control Workshop Proceedings
One of the privileges of working in wildlife management is working with positive people who still support the American dream of hope and opportunity. They call a spade a spade and fight adversity with enthusiasm. They genuinely express themselves.
Youth Fur Harvest Programs, Edward K. Boggess
Youth Fur Harvest Programs, Edward K. Boggess
Great Plains Wildlife Damage Control Workshop Proceedings
Youth fur harvest programs in Kansas have been developed as one phase of an overall series of youth education projects on ecology and the environment. Currently, the series includes Ecology, Acres for Wildlife, Kansas Mammals, Birds Around You, Reptiles and Amphibians, Fur Harvest, and Fishing. Basically, the fur harvester project was developed because, although many young people in the state are interested in trapping, few good sources of information or instruction were available to most young trappers. Because many objectionable trapping abuses are unintentionally caused by young or inexperienced trappers, it was hoped that this project would encourage ethical and …
Aspects Of Reproduction And Population Dynamics Of Bobcats In Wyoming, Douglas M. Crowe
Aspects Of Reproduction And Population Dynamics Of Bobcats In Wyoming, Douglas M. Crowe
Great Plains Wildlife Damage Control Workshop Proceedings
Distribution of the bobcat includes the 48 contiguous United States and limited occupance of southern Canada and northern Mexico. There are 11 subspecies, the one in Wyoming being Lynx rufus pallescens. Bobcats inhabit an amazing variety of habitat types, from northern boreal forests, southern swamp, and cane regions to the below sea level desert of Death Valley, California. Throughout this vast area, they utilize a wide variety of prey species. One study in Wyoming revealed at least 18 different species in the stomachs of bobcats; the cottontail rabbit being predominant. A similar study in New England revealed 20 different …
A Matter Of Understanding: An Environmental Protection Agency Film On Coyotes, F. Robert Henderson
A Matter Of Understanding: An Environmental Protection Agency Film On Coyotes, F. Robert Henderson
Great Plains Wildlife Damage Control Workshop Proceedings
This movie gives facts concerning the coyote. A better understanding of other living things will determine how responsibly we make adjustments in the environment and govern the earth we share with the coyote and other creatures.
Coydogs In Nebraska, Brian R. Mahan
Coydogs In Nebraska, Brian R. Mahan
Great Plains Wildlife Damage Control Workshop Proceedings
Skulls of 44 suspected coyote (Canis latrans) x dog (C. familiaris) hybrids, "coydogs" were collected in Nebraska from September 1975 through April 1976. Each skull was compared statistically with skulls of known coyotes, dogs, coydogs, gray wolves (C. lupus), and red wolves (C. rufus) for identification. Thirty-two males were identified as: 5 coyotes, 2 dogs, 25 coydogs; 12 females were identified as: 4 coyotes, 2 dogs, 6 coydogs. Three concentrations of hybrids were located in southeastern Nebraska.
Skunk Rabies Control And Surveillance In Central And Eastern Montana, Gary Nesse, Kenneth Seyler
Skunk Rabies Control And Surveillance In Central And Eastern Montana, Gary Nesse, Kenneth Seyler
Great Plains Wildlife Damage Control Workshop Proceedings
A skunk rabies control and surveillance program was initiated by the Department of Livestock, Vertebrate Pest Control Bureau, within designated areas of Fergus, Fallon and Richland counties between January 1, 1975 and July 30, 1975. The use of strychnine eggs employed by trained, licensed government pesticide applicators plus cooperation of local citizens proved to be a safe and selective method for conducting such a program. Of the 83 skunks diagnosed rabid by the Fluroescent Antibody Test as the Department of Livestock Diagnostic Laboratory in Bozeman, 72 percent were taken from control areas; however, of 284 skunks examined from control areas, …
Coyote And Dog Depredations, Joe Schaefer, Ronald D. Andrews
Coyote And Dog Depredations, Joe Schaefer, Ronald D. Andrews
Great Plains Wildlife Damage Control Workshop Proceedings
The objective of this study is to determine the impact of coyote and dog depredation on the sheep industry in southern Iowa and to evaluate the livestock husbandry practices associated with these losses. In order to obtain background information on sheep management practices and the number of alleged livestock losses caused by coyotes and dogs in southern Iowa, a questionnaire was sent to 3,173 sheep producers. Sixty-nine percent of the 1,260 respondents indicated that they did not have any problem with coyote depredations during 1975. However, the major cause of mortality was reported to have been coyote predation which accounted …
The Northern Swift Fox In South Dakota, Jon C. Sharps
The Northern Swift Fox In South Dakota, Jon C. Sharps
Great Plains Wildlife Damage Control Workshop Proceedings
Investigation by Fish and WIldife Srevice research biologist, Conrad Hillman and Department of Game, Fish and Parks have resulted in a five-month preliminary study of the swift fox in Shannon County, South Dakota. Thirteen fox were captured, marked, measured and released. Future plans will include an ecological study of the swift fox, introductions on private land for prairie dog control and a captive breeding program.
Predation On Big Game And Its Management, Samuel L. Beasom
Predation On Big Game And Its Management, Samuel L. Beasom
Great Plains Wildlife Damage Control Workshop Proceedings
This paper summarizes information from the literature and personal observation to present an overview of the effects of predators on big game populations. Specifically it examines control of prey populations, culling of inferior prey, and stimulation of prey productivity. Food habit investigations were omitted because of the impossibility of evaluating the impact of predation by this approach because of a lack of population data.
Prairie Dog Management: Educational Assistance To Local Governmental Units, Edward K. Boggess
Prairie Dog Management: Educational Assistance To Local Governmental Units, Edward K. Boggess
Great Plains Wildlife Damage Control Workshop Proceedings
There is a long history of involvement between Kansas State University (formerly Kansas State Agricultural College) and township governmental units regarding control of prairie dogs. In 1901 and 1903, the Kansas legislature passed laws authorizing townships to conduct prairie dog control programs and providing funds for the College to conduct experiments on methods of controlling prairie dogs and gophers. The acts also directed the College to procure and furnish to the townships the proper prepared materials for prairie dog control. The Experiment Station began supplying strychnine baits in January of 1902 and continued this practice until 1970.