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Articles 31051 - 31080 of 32987
Full-Text Articles in Entire DC Network
Recent Developments In The Control Of Vertebrate Problem Animals In The Province Of The Cape Of Good Hope, Republic Of South Africa, Douglas Hey
Vertebrate Pest Conference Proceedings: 3rd (1967)
In an earlier paper (Hey, 1964 an account was given of the topography and climate of the Cape Province, a description of the vertebrate animals and birds which might be considered to fall in the category of problem animals and the control methods used. The present paper will, therefore, deal with advances in control techniques which have since been made. At this juncture, it would be appropriate to record our sincere appreciation to the Director and Staff of the U.S. Fish and Wildlife Service and particularly to the Senior Officers of the Denver Research Center, District Agents Malcolm Allison and …
Federal Wildlife Importation Regulations: The Why And Wherefore, Joseph P. Linduska
Federal Wildlife Importation Regulations: The Why And Wherefore, Joseph P. Linduska
Vertebrate Pest Conference Proceedings: 3rd (1967)
This is a hasty and in many ways superficial review of the motivations that started us in the business of importing new, strange, beautiful, and hopefully useful wildlife. It is a capsuled account of the high cost of ill-advised introductions and of near misses that were avoided thanks to a few individuals who viewed such transplants with skepticism and even alarm. And I have touched also on the highlights of the legislative base from which we now operate in efforts to safeguard agriculture and other values from ravages of exotic wildlife; wildlife that may succeed too well with us and …
Conference Participants
Vertebrate Pest Conference Proceedings: 3rd (1967)
The Third Vertebrate Pest Conference was an enormous success with 265 in attendance, of these, 203 were registered participants. The attendance was made up of individuals having varying interests in vertebrate pest problems including foresters, agriculturalists, conservationists, pest control operators, vector control specialists, health officials, wildlife specialists, product distributors and manufacturers, instructors and researchers from twenty three states plus Washington D. C. and South Africa.
Epizootic Ecology In The Training Program Of The Vector-Borne Disease Section, Harold E. Stark
Epizootic Ecology In The Training Program Of The Vector-Borne Disease Section, Harold E. Stark
Vertebrate Pest Conference Proceedings: 3rd (1967)
To fulfill the primary objective of the Vector-Borne Disease Section of NCDC to reduce the incidence of vector-borne diseases - a series of courses on vertebrates and arthropods and their role as reservoirs, vectors, and disease-causing agents is presented. Literature is prepared and a museum is maintained. One of these courses, Epizootic Ecology, illustrates some of the aspects dealt with in these courses. Definitions and concepts are presented followed by a brief review of principles of epidemiology and ecology. Specific examples constitute the bulk of the course. One of these, tularemia, is especially useful for the purposes of this course …
Stratigraphic Chart Of The Waubansee Group In Nebraska, R. R. Burchett, E. C. Reed
Stratigraphic Chart Of The Waubansee Group In Nebraska, R. R. Burchett, E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Unopa Notes, Volume 5, Issue 7, March 1967
Unopa Notes, Volume 5, Issue 7, March 1967
UNOPA: Newsletters
Inside this Issue 1 President's Letter . . . . . 2-3 1867 - 1967 A Great State . . . . . 3 A Great Institution . . . . . 4-5 A Fourth Dimension . . . . . 5 Centennial Highlights . . . . . 6 As I See It . . . . . 5 March Meeting Notice . . . . . 5 Salute to Another New Member of UNOPA . . . . . 6 Professional Patter . . . . . 6 Do You Know That? . . . . . 7 …
Low Temperature Sample Orienting Device With Two Degrees Of Freedom, David J. Sellmyer
Low Temperature Sample Orienting Device With Two Degrees Of Freedom, David J. Sellmyer
David Sellmyer Publications
The purpose of this note is to describe a sample orienting device which has been used successfully at liquid helium temperatures to measure the high-field magnetoresistance of several single-crystal metallic compounds in a solenoidal field.
Occasional Papers On The Limnology Of Nebraska, D. B. Mccarraher
Occasional Papers On The Limnology Of Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
Nebraska limnological studies got under way throughout the state during 1966. Since this was the first full year of activities, field collections were made at as many sites as possible to accumulate extensive limnological data from which to determine lakes for future studies. A total of 44 reservoirs, natural Sand Hill lakes, rainbasin lakes, and Interstate 80 lakes was sampled. Methodology was perfected throughout the year in order to establish sampling techniques applicable to both natural and impounded waters.
Preliminary data revealed some conspicuous differences in physiochemical and biological characteristics from the geographically different regions of Nebraska. Distributions of properties …
Precambrian Well Data In Nebraska, Including Rock Type And Surface Configuration, Marvin P. Carlson
Precambrian Well Data In Nebraska, Including Rock Type And Surface Configuration, Marvin P. Carlson
Conservation and Survey Division: Faculty and Staff Publications
This bulletin presents, in tabular form, information relating to the Precambrian surface and includes a configuration map of this surface in Nebraska. The data from all of the 1460 deep tests reaching the Precambrian as of January 1, 1966 are listed. It is anticipated that further studies utilizing this data will be made due to the important influence of the Precambrian surface on later sedimentation and structure and the possibility of minerals of economic importance being present in Precambrian rocks. Specific information for each well and samples, except as noted in the tabulation, are on file and available for study …
Elephant Teeth From The Atlantic Continental Shelf, Frank C. Whitmore Jr., K. O. Emery, H. B. S. Cooke, Donald J. P. Swift
Elephant Teeth From The Atlantic Continental Shelf, Frank C. Whitmore Jr., K. O. Emery, H. B. S. Cooke, Donald J. P. Swift
United States Geological Survey: Staff Publications
Teeth of mastodons and mammoths have been recovered by fishermen from at least 40 sites on the continental shelf as deep as 120 meters. Also present are submerged shorelines, peat deposits, lagoonal shells, and relict sands. Evidently elephants and other large mammals ranged this region during the glacial stage of low sea level of the last 25,000 years.
Paleotectonic Investigations Of The Permian System In The United States, Edwin D. Mckee, Stephen S. Oriel, Henry L. Berryhill, Eleanor J. Crosby, Donald A. Myers, George H. Dixon, Marjorie E. Maclachlan, Melville R. Mudge, Edwin K. Maughan, Richard P. Sheldon, Earl R. Cressman, Thomas M. Cheney, Walter E. Hallgarth, Keith B. Ketner
Paleotectonic Investigations Of The Permian System In The United States, Edwin D. Mckee, Stephen S. Oriel, Henry L. Berryhill, Eleanor J. Crosby, Donald A. Myers, George H. Dixon, Marjorie E. Maclachlan, Melville R. Mudge, Edwin K. Maughan, Richard P. Sheldon, Earl R. Cressman, Thomas M. Cheney, Walter E. Hallgarth, Keith B. Ketner
United States Geological Survey: Publications
(A) Allegheny region, by Henry L. Berryhill, Jr
(B) Gulf Coast region, by Eleanor J. Crosby
(C) West Texas Permian basin region, by Steven S. Oriel, Donald A. Myers, and Eleanor J. Crosby
(D) Northeastern New Mexico and Texas-Oklahoma Panhandles, by George H. Dixon
(E) Oklahoma, by Marjorie E. MacLachlan
(F) Central Midcontinent region, by Melville R. Mudge
(G) Eastern Wyoming, eastern Montana, and the Dakotas, by Edwin K. Maughan
(H) Middle Rocky Mountains and northeastern Great Basin, by Richard P. Sheldon, Earl R. Cressman, Thomas M. Cheney, and Vincent E. McKelvey
(I) Western Colorado, southern Utah, and northwestern New …
Roughness Characteristics Of Natural Channels, Harry H. Barnes Jr.
Roughness Characteristics Of Natural Channels, Harry H. Barnes Jr.
United States Geological Survey: Publications
Color photographs and descriptive data are presented for 50 stream channels for which roughness coefficients have been determined. All hydraulic computations involving flow in open channels require an evaluation of the roughness characteristics of the channel. In the absence of a satisfactory quantitative procedure this evaluation remains chiefly an art. The ability to evaluate roughness coefficients must be developed through experience. One means of gaining this experience is by examining and becoming acquainted with the appearance of some typical channels whose roughness coefficients are known. The photographs and data contained in this report represent a wide range of channel conditions. …
A Revision Of The Bees Of The Genus Andrena Of The Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae), Wallace E. Laberge
A Revision Of The Bees Of The Genus Andrena Of The Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae), Wallace E. Laberge
Bulletin of the University of Nebraska State Museum (1924–2023)
This paper is the first part of a monograph of the bee genus Andrena in the western hemisphere and treats the subgenus Callandrena. Available data regarding phylogeny, distribution, biology, and flower preferences are presented together with keys to separate the species, diagnoses and descriptions of the species and discussions of geographic variation when applicable. Seventy-nine species and one subspecies are recognized. Sixteen names are relegated to synonymy, one to homonymy and eight are removed from the subgenus Callandrena. The thirty-nine species new to science are: aerifera, aeripes, afimbriata, ardis, auripes, balsamorhizae, beameri, bilimeki, bullata, calvata, dreisbachorum, fulminea, fulminoides, …
Sympatry Changes And Hybridization Incidence In Mallards And Black Ducks, Paul A. Johnsgard
Sympatry Changes And Hybridization Incidence In Mallards And Black Ducks, Paul A. Johnsgard
Papers in Ornithology
Changes in general fall and winter distributions of Mallards and Black Ducks over the past century have resulted in markedly increased sympatric contact during pair formation between these two forms, and have been responsible for increased opportunities for hybridization. Bureau of Sport Fisheries and Wildlife records of hybrids from 34 states indicate a minimal current hybridization rate that is about 4% of the frequency expected on the basis of mating according to mathematical probabilities of chance contact. Thus, hybridization is most frequent where both forms are almost equally abundant, indicating that no reinforcement of differences reducing hybridization in the primary …
Antitrust Standards For 1975, J. Fred Weston
Antitrust Standards For 1975, J. Fred Weston
Nebraska Law Review
The formulation of standards for antitrust policy has long been an important goal of researchers in the field of industrial organization. This paper seeks to pursue its objective of a consideration of the formulation of standards for antitrust policy with reference to their future implications by analysis of four areas. First, the main outlines of the characteristics of the economy of 1975 are set forth. Second, the objectives of antitrust policy are reconsidered, reformulated, and restated. Third, propositions about the structure and behavior of industries in the economy are considered. Fourth, the implications of the foregoing background materials are related …
A New Species Of Rhinoceros, Aphelops Kimballensis, From The Latest Pliocene Of Nebraska, Lloyd G. Tanner
A New Species Of Rhinoceros, Aphelops Kimballensis, From The Latest Pliocene Of Nebraska, Lloyd G. Tanner
Bulletin of the University of Nebraska State Museum (1924–2023)
An uncrushed skull and associated skeletal elements of a very large rhinoceros are the basis for the description of a new species of Aphelops from Frontier County, Nebraska. The major differences are: the skull is much larger in most dimensions than other Aphelops; it has an extremely elevated occipital region in comparison to Aphelops mutilus; the narial notch is retracted to a point perpendicular to the center of molar one; and the teeth are more hypsodont than any other species of this genus. The sediments which yielded the skull and skeletal parts are considered to be Kimballian in …
The Brule-Gering (Oligocene-Miocene) Contact In The Wildcat Ridge Area Of Western Nebraska, C. Bertrand Schultz, Charles H. Falkenbach, Carl F. Vondra
The Brule-Gering (Oligocene-Miocene) Contact In The Wildcat Ridge Area Of Western Nebraska, C. Bertrand Schultz, Charles H. Falkenbach, Carl F. Vondra
Bulletin of the University of Nebraska State Museum (1924–2023)
The contact between the Brule Formation (Oligocene) and the Gering Formation (Miocene) can be readily distinguished in the Wildcat Ridge area, as elsewhere in western Nebraska. At the critical fossiliferous exposures at Castle Rock in Scotts Bluff County, the contact on the south face between the two formations is defined as 129 feet above the base of the "Upper Ash" bed, which corresponds to the upper portion of Darton's (1899, PI. C, Fig. D, following p. 754) "sandy phase" in the upper part of the Brule. Certain key beds in the Gering Formation can be traced laterally from a channel …
Ec67-1214 Marketing And Utilization Of Nebraska Timber, Ralph T. Monahan
Ec67-1214 Marketing And Utilization Of Nebraska Timber, Ralph T. Monahan
University of Nebraska-Lincoln Extension: Historical Materials
Extension Circular 67-1214: marketing and Utilization of Nebraska Timber; The forest resource, history of Nebraska’s Timber Industry, Saw timber, Pulpwood, Wood Shavings, Black Walnut, Measurement, Veneer, Cooperage, Posts, Christmas trees, Baskets and Wooden Shoe Soles.
Centennial Guidebook To The Geology Of Southeastern Nebraska, R. R. Burchett, E. C. Reed
Centennial Guidebook To The Geology Of Southeastern Nebraska, R. R. Burchett, E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Devonian Of The North-Central Region, United States, C. Collinson, Marv Carlson
Devonian Of The North-Central Region, United States, C. Collinson, Marv Carlson
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
The Information Gap In Antitrust Enforcement, Kirkley S. Coulter
The Information Gap In Antitrust Enforcement, Kirkley S. Coulter
Nebraska Law Review
In a series of cases culminating in the decision of United States v. Von's Grocery Co. in May 1966, the Supreme Court seems to have embraced a more and more rigidly mathematical approach to the enforcement of the Celler-Kefauver Anti-Merger Act of 1950. In this case no misbehavior on the part of the defendant (or of anyone else) was charged. The attack went not to conduct but solely to industry structure. The illegality was found by the court to rest heavily on certain statistical trends which it believed constituted an increase in "economic concentration" in the Los Angeles grocery market. …
Proceedings Of The Second Annual Meeting Of The National Collegiate Honors Council. Washington, D.C., October 20-22, 1967, Walter D. Weir
Proceedings Of The Second Annual Meeting Of The National Collegiate Honors Council. Washington, D.C., October 20-22, 1967, Walter D. Weir
National Collegiate Honors Council Monographs
The National Collegiate Honors Council conducted its second annual meeting at the Statler-Hilton Hotel, Washington, D.C., October 20-22, 1967. About 230 faculty members, administrators, and students attended this meeting. The proceedings of that meeting are contained in this volume. The meeting was basically devoted to three concerns: (1) the problem of liaison between secondary schools and college honors programs; (2) problems and developments in the offering of science courses for honors students; (3) the exchange of information about problems and new directions in the honors program of those participating in the meeting. For the most part, the papers in this …
Physicochemical Limnology Of Four Reservoirs In Southwest Nebraska, Donald L. Tennant, Robert E. Thomas, Robert E. Thomas, Joe Gray
Physicochemical Limnology Of Four Reservoirs In Southwest Nebraska, Donald L. Tennant, Robert E. Thomas, Robert E. Thomas, Joe Gray
Nebraska Game and Parks Commission: Staff Research Publications
Physicochemical data from four reservoirs in Nebraska taken within a 30-hour period in August, revealed moderate thermal stratification, closely associated in two reservoirs with the functioning low-level outlet. The reservoirs with thermoclines exhibited greater temperature ranges and contained cooler waters than did reservoirs without thermoclines. The distribution of fish as detected on sonar often revealed the presence and location of a thermocline prior to physical or chemical data verification.
Without exception, the larger the reservoir and the lower the outlet, the better the reservoir fishery. Downstream fisheries ranked the same with one exception.
Centennial Guidebook To The Geology Of Southeastern Nebraska, R. R. Burchett, E. C. Reed
Centennial Guidebook To The Geology Of Southeastern Nebraska, R. R. Burchett, E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Theory Of Rbe For Heavy Ion Bombardment Of Dry Enzymes And Viruses, J. J. Butts, Robert Katz
Theory Of Rbe For Heavy Ion Bombardment Of Dry Enzymes And Viruses, J. J. Butts, Robert Katz
Robert Katz Publications
The response of dry enzymes and viruses to heavy ion bombardment may be predicted from their response to γ-irradiation (and no further knowledge of their size and structure). The molecules are approximated as point particles whose response to ionization is the same for heavy ion bombardment as for γ-rays. From the δ-ray distribution formula and an extrapolated range-energy relation for electrons, the radial distribution of secondary ionization energy may be found. Under this dosage distribution the inactivation probability may be found as a function of radial distance from the ion's path, and then may be integrated over all space to …
Panthera Atrox (Mammalia: Felidae) From Central Alaska, Frank C. Whitmore Jr., Helen L. Foster
Panthera Atrox (Mammalia: Felidae) From Central Alaska, Frank C. Whitmore Jr., Helen L. Foster
United States Geological Survey: Staff Publications
A lower jaw of the large Pleistocene cat Panthera atrox (Leidy) was found on an alluvial flat near the mouth of Lost Chicken Creek, about 180 miles northeast of Fairbanks, Alaska. It was probably washed out of carbonaceous silt deposits which, in the adjacent area, have also yielded bones of Equus, Bison, Rangifer, Cervus, and Elephantidae. The Panthera jaw falls within the size range of the series from Rancho La Brea, California, and differs from Rancho La Brea specimens only in a few characteristics. P. atrox appears to have been significantly larger than extinct or …
The Monotypic North American Subgenus Larandrena Of Andrena (Hymenoptera: Apoidea), D. W. Ribble
The Monotypic North American Subgenus Larandrena Of Andrena (Hymenoptera: Apoidea), D. W. Ribble
Bulletin of the University of Nebraska State Museum (1924–2023)
Larandrena contains a single species, A. miserabilis Cresson. This small, common Andrena is found throughout most of the United States and southern Canada in the spring. The subgeneric position, nomenclature, redescription. variation, notes on the biology, parasites, range, seasonal activity and plant host records are included. A. rniserabilis is thought to be an important pollinator of fruit trees.
Citellus Kimballensis, A New Late Pliocene Ground Squirrel, Douglas C. Kent
Citellus Kimballensis, A New Late Pliocene Ground Squirrel, Douglas C. Kent
Bulletin of the University of Nebraska State Museum (1924–2023)
A new fossil sciurid, Citellus kimballensis, is described. This new species was found in the Kimball Formation, uppermost Ogallala (very late Pliocene) at the University of Nebraska State Museum Collecting Locality Cn-1O1, northeast of Sidney, Cheyenne County, Nebraska. Characters of the dentition and skull of C. kimballensis are compared with those of other species of the genus, and with those of Cynomys.
Nebraska Groundwater Level (Decline & Rise), 1967
Nebraska Groundwater Level (Decline & Rise), 1967
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Early Silurian Brachiopods From The Subsurface Of Southeastern Nebraska, M. P. Carlson, A. J. Boucot
Early Silurian Brachiopods From The Subsurface Of Southeastern Nebraska, M. P. Carlson, A. J. Boucot
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.