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Articles 39571 - 39600 of 40083
Full-Text Articles in Entire DC Network
Physics, Chapter 15: Heat And Work, Henry Semat, Robert Katz
Physics, Chapter 15: Heat And Work, Henry Semat, Robert Katz
Robert Katz Publications
Until about 1750 the concepts of heat and temperature were not clearly distinguished. The two concepts were thought to be equivalent in the sense that bodies at equal temperatures were thought to "contain" equal amounts of heat. Joseph Black (1728-1799) was the first to make a clear distinction between heat and temperature. Black believed that heat was a form of matter, which subsequently came to be called caloric, and that the change in temperature of a body when caloric was added to it was associated with a property of the body which he called the capacity. Later investigators endowed caloric …
Physics, Chapter 46: Nuclear Reactions, Henry Semat, Robert Katz
Physics, Chapter 46: Nuclear Reactions, Henry Semat, Robert Katz
Robert Katz Publications
One of the most important developments of twentieth-century physics was the formulation of the special theory of relativity. This theory was an outgrowth of the failure of all attempts to show that the motion of the source of light relative to the observer had any effect on the speed of light. It is impossible to account for these experimental findings of Michelson and Morley, and others, on the basis of classical mechanics and electromagnetic theory. In 1905, Albert Einstein put forth the suggestion that all experimental findings would be clarified if it were assumed that the speed of light is …
Research Notes: Experimental Infection With Strigoid Cercariae, Glenn L. Hoffman
Research Notes: Experimental Infection With Strigoid Cercariae, Glenn L. Hoffman
United States Fish and Wildlife Service: Publications
During the summers of 1947 and 1948 strigeoid cercariae from Carrol Lake, Wisconsin were collected and identified by the late Dr. F. G. Brooks and turned over to the writer for use in the experimental infection of frog tadpoles and various fish. It was hoped to establish or eliminate these animals as the second intermediate host. One of the 8 tested was found infective for fish, and 1 infected tadpoles. These records do not elucidate the life cycles of these worms, but it is hoped that the work may help in the future study of strigeoid cercariae.
The Fishery Of An Alkaline Sandhill Lake, Nebraska, D. B. Mccarraher
The Fishery Of An Alkaline Sandhill Lake, Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
The sandhill region of Nebraska is a plains regions that has been excessively modified by the force of wind. It is an area of partially changed environment through wind action, an area of dune sandhills, sandy basins and valleys, exposed ground water lakes and marshes, and possessing little surface runoff.
Effect Of Time Of Cutting On Yield And Botanical Composition Of Prairie Hay In Southeastern Nebraska, Elverne C. Conard, Vincent H. Arthaud
Effect Of Time Of Cutting On Yield And Botanical Composition Of Prairie Hay In Southeastern Nebraska, Elverne C. Conard, Vincent H. Arthaud
Nebraska Agricultural Experiment Station: Historical Research Bulletins
Approximately three and one-third million acres of native prairie are harvested annually in Nebraska for hay. In the four-year period 1948-1951, the State ranked first in wild hay production with an average yield of more than two and one-quarter million tons per year. This crop is an important natural resource in Nebraska's livestock industry. Studies were initiated in 1945 to determine the effects of time of cutting on the yield and feeding value of prairie hay in southeastern Nebraska. The studies were continued through the summer of 1952 to determine the effects of different cutting treatments on the vigor and …
Industrial Wastes: Bio-Assays For Control Of Industrial Effluents, Croswell Henderson, Clarence M. Tarzwell
Industrial Wastes: Bio-Assays For Control Of Industrial Effluents, Croswell Henderson, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
Waste effluents from many industries are toxic to fish and other aquatic life. The control or treatment of these wastes for safe release into receiving waters presents a problem of consider able magnitude.
Much effort has been expended by some industries to solve this problem, primarily through chemical analysis for possible toxic components and then generally by a search of the literature to find out how toxic a particular component may be. Unfortunately, this approach has not been successful, nor can it be expected to be productive of satisfactory answers.
Whole Issue Nebraska Bird Review (July 1957) 25(3)
Whole Issue Nebraska Bird Review (July 1957) 25(3)
Nebraska Bird Review
TABLE OF CONTENTS
Historical Sketch ........................34
Birding in Kearney at Four Miles Per Hour ........................37
Meetings and Reports ........................41
Arthur Sperry Pearse ........................42
Short Comments on Bird Behavior ........................43
General Notes ........................44
Excerpts from Letters to the Editors ........................45
Reports of Nests, Nestlings, and Fledglings ........................46
Book Reviews ........................48
Whole Issue Nebraska Bird Review (April 1957) 25(2)
Whole Issue Nebraska Bird Review (April 1957) 25(2)
Nebraska Bird Review
TABLE OF CONTENTS
1956 Nesting Report ........................18
Report .of the Mid-Winter Convention........................ 21
Dr. John Todd Zimmer ........................22
Letters of. Special Note........................ 22
Cowbird Eggs in Nests of Bell's Vireos........................ 23
Notes ........................24
Treasurer's Report for the Year 1956 ........................30
Brief Summary of 1956 Hikes........................ 31
Book Reviews ........................32
Specificity Of Intermolecular Forces Due To Quantummechanical And Thermal Charge Fluctuations*, Herbert Jehle
Specificity Of Intermolecular Forces Due To Quantummechanical And Thermal Charge Fluctuations*, Herbert Jehle
Department of Physics and Astronomy: Faculty Publications
The preceding note1 (Paper I) developed the theory of the specificity of some intermolecular forces: the forces due to fluctuations of electric charge distribution in and over the interacting molecules. It was found that for a mixture of molecules in a liquid medium these forces cause a rearrangement of the molecules, so that molecules which have the same distribution of oscillator polarizabilities and oscillator orientations over the frequency spectrum tend to associate. This means that like molecules tend to become nearest neighbors. For that reason it was said that there is specific attraction between identical molecules.
Biological Indices Of Water Pollution, With Special Reference To Fish Populations, Peter Doudoroff, Charles E. Warren
Biological Indices Of Water Pollution, With Special Reference To Fish Populations, Peter Doudoroff, Charles E. Warren
Other Publications in Wildlife Management
A number of investigators have very recently published discussions having to do with biological indices and biological measures of water pollution (1) (2) (7) (13) (14) (15) (16) (26) (27) (28) (29) (30) (36) (38). Fjerdingstad (12) has discussed some of the pertinent European literature. The fundamental concepts presented by these authors are not original, for the idea that aquatic organisms can be useful "indicators" of environmental conditions, and particularly of the degree of pollution of water with organic wastes, has a long history (12). Because of certain novel features and the relatively wide scope of the studies, and the …
Medial Pleistocene Fossil Vertebrate Localities In Nebraska, C. Bertrand Schultz, Lloyd G. Tanner
Medial Pleistocene Fossil Vertebrate Localities In Nebraska, C. Bertrand Schultz, Lloyd G. Tanner
Bulletin of the University of Nebraska State Museum (1924–2023)
The accurate geologic dating of Pleistocene vertebrate localities which occur outside the glaciated regions has always been difficult. Several new fossil localities in Nebraska now provide data for a better understanding of the paleoecology and faunal evidence of the medial Pleistocene of the Great Plains region.
A fossil quarry, containing the remains of both vertebrates and invertebrates, has been discovered in south-central Nebraska (11/2 miles south and west of Angus in Nuckolls County). The fossils are preserved in Sappa silts in a lime concentration zone (C horizon) of a Yarmouth paleosol. The calcium carbonate appears to have been responsible for …
Protein And Fat Requirements Of Baby Pigs, E. R. Peo, Jr., G. C. Ashton, V. C. Speer, D. V. Catron
Protein And Fat Requirements Of Baby Pigs, E. R. Peo, Jr., G. C. Ashton, V. C. Speer, D. V. Catron
Department of Animal Science: Faculty Publications
Present day research in swine nutrition with its early weaning programs and its use of the baby pig in biological assays has necessitated the determination of the nutritional requirements of the baby pig. The requirements for two of these nutrients (protein and fat) have not been clearly established. Early studies on the protein and fat requirements of baby pigs were conducted with liquid synthetic milk diets, which were formulated generally on the basis of the composition of sow milk.
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Game and Parks Commission: Publications
IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Game and Parks Commission: Publications
IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …
Recent Advances In Veterinary Entomology1, A.W. Lindquist, E. F. Knipling
Recent Advances In Veterinary Entomology1, A.W. Lindquist, E. F. Knipling
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The advances during the last 15 years in our knowledge of the biology and control of arthropod pests of livestock and vectors of animal disease agents exceed those made in any similar period in past history. Before 1942 we relied mainly on rotenone, pyrethrum, the thiocyanates, and the arsenicals for control of lice, ticks, mites, biting flies, and cattle grubs. While effective against some pests under certain conditions, these materials were not practical for wide-scale use and did not meet the public demand for better insecticides. Today we have highly effective and low-cost insecticides such as DDT, lindane, TDE, toxaphene, …
The Ticks Or Ixodides Of The U.S.S.R.: A Review Of The Literature, George Anastos
The Ticks Or Ixodides Of The U.S.S.R.: A Review Of The Literature, George Anastos
Harold W. Manter Laboratory of Parasitology: Library Materials
No abstract provided.
Translation By Virginia Ivens Of Coccidia Of Sheep And Goats Of Western Kazakhstan By S. K. Svanbaev In Works Of The Institute Of Zoology, Academy Of Sciences, Kazakh Ssr 7 (1957): 252-257, S. K. Svanbaev, Virginia Ivens
Translation By Virginia Ivens Of Coccidia Of Sheep And Goats Of Western Kazakhstan By S. K. Svanbaev In Works Of The Institute Of Zoology, Academy Of Sciences, Kazakh Ssr 7 (1957): 252-257, S. K. Svanbaev, Virginia Ivens
Harold W. Manter Laboratory of Parasitology: Library Materials
Translation number 1, College of Veterinary Medicine, University of Illinois, Urbana, Illinois, United States
Translation of Coccidia of sheep and goats of western Kazakhstan by S. K. Svanbaev, in Works of the Institute of Zoology, Academy of Sciences, Kazakh SSR (1957) 7: 252-257
Transliteration: K voprosu o faune i morfologii koktsidii ovets i koz zapadnogo Kazakhstana. Trudy Instituta Zoologii Akademie Nauk Kazakh SSR (1957) tom VII (1957): 252-257
Translated from Russian to English by Virginia Ivens, University of Illinois, March 21, 1960 (11 pages)
Specificity Of The London-Eisenschitz Wang Force*, Jerrold M. Yos, William L. Bade, Herbert Jehle
Specificity Of The London-Eisenschitz Wang Force*, Jerrold M. Yos, William L. Bade, Herbert Jehle
Department of Physics and Astronomy: Faculty Publications
The London force between macromolecules immersed in a liquid medium has an interesting property which may be of biological significance. For the purpose of formulating the London interaction, one may represent each macromolecule by a set of electric dipole oscillators of specified polarizability, frequency, and orientation. To consider the simplest case, one may study macromolecules of globular form not in direct contact with each other. (They might be separated by Debyeiuckel- Onsager atmospheres made up of molecules from the medium; then the equilibrium distance between the macromolecules would be regulated by concentration changes in the ionic medium.)' Such a geometrical …
Gyrodactylus Eucaliae N. Sp. (Trematoda: Monogenea) From The Brook Stickleback, Eucalia Inconstans*, Glenn L. Hoffman, Francis M. Ikezaki
Gyrodactylus Eucaliae N. Sp. (Trematoda: Monogenea) From The Brook Stickleback, Eucalia Inconstans*, Glenn L. Hoffman, Francis M. Ikezaki
United States Fish and Wildlife Service: Publications
A new species of Gyrodactylus was observed on the skin, gills, and fins of the brook stickleback from the English Coulee, Grand Forks, North Dakota during the summers of 1953-1955. Host-specificity is usually striking in the monogenetic trematodes and since this parasite was not observed on any other species of fish from this body of water or the nearby Turtle River, it was studied in detail and is here described as a new species, G. eucaliae.
Effects Of Water Fluctuation And Vegetation Change On Bird Populations, Particularly Waterfowl, Paul A. Johnsgard
Effects Of Water Fluctuation And Vegetation Change On Bird Populations, Particularly Waterfowl, Paul A. Johnsgard
Paul Johnsgard Collection
In recent years reclamation activities in the Columbia Basin of Washington have resulted in profound changes in the character of the entire landscape throughout this region. The present study is an attempt to clarify some of the biological effects of impoundment behind O'Sullivan Dam in the Potholes area, Grant County (Johnsgard 1955b). In this area, a large expanse of moving sand dunes and a high water table are responsible for causing the formation of numerous small water areas, or "potholes," between the dunes. The physical nature of the area and its limited potentialities have made it of little value to …
Stream Pollution- Aquatic Macro-Invertebrate Communities As Indicators Of Organic Pollution In Lytle Creek, Arden R. Gaufin, Clarence M. Tarzwell
Stream Pollution- Aquatic Macro-Invertebrate Communities As Indicators Of Organic Pollution In Lytle Creek, Arden R. Gaufin, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
Year-round field studies of the com position and ecology of stream communities associated with the purification of organic wastes in streams were initiated on Lytle Creek in October, 1949. This creek, which is located about 45 miles northeast of Cincinnati, Ohio, is a tributary of the Little Miami River. Its drainage basin comprises 27 sq. mi., a third of which is contained within the city limits of Wilmington, Ohio, a city of some 7,412 persons
The Coexistence Of Pathogens And Pseudomonads In Soluble Oil Emulsions, R. Samuel-Maharajah, Hilliard Pivnik, W.E. Engelhard, Sheila Templeton
The Coexistence Of Pathogens And Pseudomonads In Soluble Oil Emulsions, R. Samuel-Maharajah, Hilliard Pivnik, W.E. Engelhard, Sheila Templeton
Papers in Microbiology
This investigation is concerned primarily with the growth and virulence of pathogenic bacteria introduced into soluble oil emulsions. The soluble oils are petroleum or fatty oils emulsified with soaps of petroleum sulfonic acids, naphthenic acids, fatty acids, rosin, or tall oil. When mixed with water, the soluble oils form stable oil-in-water emulsions and, as such, are used in machine shops as coolants and lubricants in the cutting and grinding of metals. Unfortunately, they serve as excellent substrates for the growth of bacteria.
Rb56-178 Streak Mosaic Of Wheat In Nebraska And Its Control, R. Staples, W.B. Allington
Rb56-178 Streak Mosaic Of Wheat In Nebraska And Its Control, R. Staples, W.B. Allington
University of Nebraska-Lincoln Extension: Historical Materials
A mosaic of wheat was first observed in Nebraska by Peltier in 1922. Peltier found diseased plants in a large number of winter and spring wheat varieties at Lincoln, and in some instances, he successfully inoculated wheat and corn from the juice of infected plants. The temperatures under which Peltier maintained his inoculated plants are unknown and other criteria now employed to characterize the viruses were not utilized. It is probable, however, that he was working with what is now known as wheat streak mosaic virus.
This bulletin reports the results of studies on the epidemiology of wheat streak mosaic …
1956 Game, Forestation And Parks Commission Annual Report
1956 Game, Forestation And Parks Commission Annual Report
Nebraska Game and Parks Commission: Publications
No abstract provided.
Field Manual Fm 55-8, Transportation Intelligence, October 1956, Robert Bolin , Depositor
Field Manual Fm 55-8, Transportation Intelligence, October 1956, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
This is a manual describing the transportation intelligence activities of the Army in the mid-1950s. A more accurate title would be “Transportation Corps Intelligence” since the Army technical services were responsible for intelligence related to their field of expertise in the 1950s.
The modern US Army vision of the technical intelligence developed during World War II. Shortly before World War II, Army Technical Services had been instructed to set up intelligence sections in the offices of their chiefs. The technical services were bureaus which supplied weapons, equipment, and services to the Army, managed the careers of officers in a particular …
The Japanese Lawyer, Judson S. Woodruff
The Japanese Lawyer, Judson S. Woodruff
Nebraska Law Review
I. Introduction
II. Legal Education
III. The National Judicial Examination
IV. The Judicial Research and Training Institute
V. Judiciary
VI. The Public Procurators
VII. Bengoshi—The Practicing Lawyer
Arretotherium Fricki, A New Miocene Anthracothere From Nebraska, J. R. Macdonald, C. Bertrand Schultz
Arretotherium Fricki, A New Miocene Anthracothere From Nebraska, J. R. Macdonald, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum (1924–2023)
A new species of middle Miocene (early Hemingfordian) anthraco-there, Arretotherium fricki Macdonald and Schultz is described based on a cranium from the upper Marsland deposits of Nebraska. The holotype suggests that this genus was derived from the Oligocene genus Elomeryx Marsh.
Streak Mosaic Of Wheat In Nebraska And Its Control, R. Staples, W. B. Allington
Streak Mosaic Of Wheat In Nebraska And Its Control, R. Staples, W. B. Allington
Nebraska Agricultural Experiment Station: Historical Research Bulletins
This bulletin reports the results of studies on the epidemiology of wheat streak mosaic under Nebraska conditions. Particular attention is given to the occurrence and certain characteristics of the mite vector of the virus, the relation of weather and other factors to some of its activities, a correlation of certain mite situations with epidemics of the disease, and recommendations for disease control.
Grasslands Of The Great Plains: Their Nature And Use, J. E. Weaver, F. W. Albertson, B. W. Allred, Arnold Heerwagen
Grasslands Of The Great Plains: Their Nature And Use, J. E. Weaver, F. W. Albertson, B. W. Allred, Arnold Heerwagen
Papers of John E. Weaver (1884–1956)
This book is the result of a long-felt need by the authors and their students for a comprehensive survey of the numerous studies that have been made on plains grasslands. From southern Texas far into Saskatchewan the mid and short grasses form a magnificent prairie nearly 2,500 miles in length and approximately 400 miles wide. Kinds of communities, their composition, nature, significance and uses are fully described. Such information is of value not only to students, range technicians, and other professional conservationists, but also to ranchers and other land owners-in fact, to anyone interested in the economy of our midwestern …
Translation By Virginia Ivens Of The Taxonomic System Of Sporozoa, Phylum Protozoa By E. M. Cheissin [Kheisin] In Zoological Journal, Academy Of Sciences, Ussr 35 (1956): 1,281-1,298, E. M. Cheissin, Virginia Ivens
Translation By Virginia Ivens Of The Taxonomic System Of Sporozoa, Phylum Protozoa By E. M. Cheissin [Kheisin] In Zoological Journal, Academy Of Sciences, Ussr 35 (1956): 1,281-1,298, E. M. Cheissin, Virginia Ivens
Harold W. Manter Laboratory of Parasitology: Library Materials
Translation number 2, College of Veterinary Medicine, University of Illinois, Urbana, Illinois, United States, June 14, 1960 (21 pages)
Translation from Russian to English by Virginia Ivens
Transliteration: O sisteme sporovikov (klass Sporozoa, tip Protozoa) Zoologicheskii zhurnal, Akademie Nauk SSSR, tom XXXV, no. 9 (1956): 1,281-1,289