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Articles 151111 - 151140 of 159658
Full-Text Articles in Entire DC Network
Distribution And Taxonomic Status Of Blarina Hylophaga Elliot (Insectivora: Soricidae), Sarah B. George, Jerry R. Choate, Hugh H. Genoways
Distribution And Taxonomic Status Of Blarina Hylophaga Elliot (Insectivora: Soricidae), Sarah B. George, Jerry R. Choate, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Systematic relationships of southern populations of short-tailed shrews (genus Blarina) are assessed on the basis of univariate and multivariate statistics. Populations are separated into two phena; southwestern short-tailed shrews are significantly larger morphometrically than southeastern forms. The two phena apparently represent distinct species. The name Blarina hylophaga is available for southwestern populations, and the name Blarina carolinensis is here restricted to short-tailed shrews in the southeastern United States.
Optimum Yield And The Fcma: Uneven Distribution Of Management Burden, Herrick J. Johnson
Optimum Yield And The Fcma: Uneven Distribution Of Management Burden, Herrick J. Johnson
Marine Affairs Theses and Major Papers
Until the establishment of the Fishery Conservation and Management Act of 1976 (FCMA), fish outside the United States' twelve mile fishery zone were, according to international law, common property and belonged to the nation or individual that caught them. This common property law was based on the concept that fish resources were so large that no amount of fishing would interfere with the right of others to catch fish. Modern technology, however, has created equipment that enabled foreign and domestic fishermen to over-fish the resource. A reduced domestic catch led coastal fishermen to support a bill that unilaterally extended the …
Clinical Thermoradiotherapy, H. I. Bicher, T. S. Sandhu, F. W. Hetzel
Clinical Thermoradiotherapy, H. I. Bicher, T. S. Sandhu, F. W. Hetzel
Henry Ford Hospital Medical Journal
No abstract provided.
Local Microwave Hyperthermia In Cancer Therapy. Preliminary Report, Carlos A. Perez, Walter Kopecky, Robert Baglan, D. Venkata Rao, Richard Johnson
Local Microwave Hyperthermia In Cancer Therapy. Preliminary Report, Carlos A. Perez, Walter Kopecky, Robert Baglan, D. Venkata Rao, Richard Johnson
Henry Ford Hospital Medical Journal
No abstract provided.
Small Mammals In Openings In Virginia's Dismal Swamp, Robert K. Rose
Small Mammals In Openings In Virginia's Dismal Swamp, Robert K. Rose
Biological Sciences Faculty Publications
In a study of small mammals of openings in the Dismal Swamp of Virginia, seven species were obtained using pitfall traps. Samples included several species rarely caught in the Swamp - seven specimens of the Dismal Swamp subspecies of the southern bog lemming, Synaptomys cooperi helaletes, the first collected in this century; two least shrews, Cryptotis parva; and 15 southeastern shrews, Sorex longirostris fisheri . Results are compared to previous studies, conducted primarily in forested habitats, in which the white-footed mouse, Peromyscus leucopus, and the golden mouse, Ochrotomys nuttalli, were numerically dominant.
The Nutritional Value Of Selected Vegetarian Meals, Kathleen R. Wheeler
The Nutritional Value Of Selected Vegetarian Meals, Kathleen R. Wheeler
Loma Linda University Electronic Theses, Dissertations & Projects
The complementary effect of various vegetable proteins as eaten by humans in vegetarian meals was evaluated using the PER method in rats. In addition, the quality of leaf protein as the only protein source in one of the diets was evaluated.
Five diets were formulated consisting of a typical breakfast menu, a typical lunch, a typical supper, a combination of the three meals, and a mixture of green leafy vegetables. The diets were isocaloric and isonitrogenous and consisted of 10% protein, 8% fat, 69% carbohydrate, 7% cellulose, 4% mineral mixture, and 2% vitamin mixture. The control diet was prepared using …
The Paleoecology Of Carbonaceous (Algal) Material In The Middle Devonian Rockport Quarry Limestone Of The Northeastern Portion Of Michegan's Lower Peninsula, Jeffrey Dean Spruit
The Paleoecology Of Carbonaceous (Algal) Material In The Middle Devonian Rockport Quarry Limestone Of The Northeastern Portion Of Michegan's Lower Peninsula, Jeffrey Dean Spruit
Masters Theses
The Rockport Quarry Limestone of the Lower Traverse Group represents a sequence of laterally contemporaneous carbonate platform sediments characterized in outcrop by four facies: (l) stromatoporoid biolithite, (2) organic-mud packstone, (3) biolithite-micrite transition, and (4) micrite. In facies (l), (2) and (3) dark brown 4-micron microspheres are found grouped or singly in wispy seams of brown carbonaceous material. Three species of filamentous blue-green algae were discovered in insoluble residues of facies (l) and (2). Numerous lamellar stromatoporoids and solitary corals occur with the carbonaceous-rich sediment in facies (l). Coalescing lenses of crinoid and bryozoan debris occur with the carbonaceous sediment …
A Study Of Habitat Preference For The Aestivation Of The Alfalfa Weevil Hyper Postica (Curculionidae: Coleoftera), Donald D. Myers
A Study Of Habitat Preference For The Aestivation Of The Alfalfa Weevil Hyper Postica (Curculionidae: Coleoftera), Donald D. Myers
Masters Theses
Habitat prefernce for the aestivation of Hyper postica was researched by the sampling of field borders. Sampling methods by the sampling of field borders. Sampling methods included soil and vegetative litter collection, sweeping of borders with an insect net and emergence trapping of wooded and grass habitat. Fields were swept once a week to determine if H. postica returned to the field before the winter season. The methods resulted in the following findings: Weevils do not aestivate litter. Data from sweeping indicated that weevils prefer areas that include alfalfa and grasses. Results of observations implied that there is a direct …
A Microbial Reductive Conversion Of The Steffimycin Chromophore: Chemical And Mechanistic Studies On A Soluble, Nadhdependent, Nonflavin-Containing Reductase From Streptomyces Steffisburgensis, John Rollin Hofstetter
A Microbial Reductive Conversion Of The Steffimycin Chromophore: Chemical And Mechanistic Studies On A Soluble, Nadhdependent, Nonflavin-Containing Reductase From Streptomyces Steffisburgensis, John Rollin Hofstetter
Dissertations
An understanding of a microbial reduction of the anthracycline antibiotic, steffimycin (1) was approached from two directions. First, the NADH-dependent enzyme responsible for the reduction was purified from the Streptomyces steffisburgensis cytosol and characterized. Second, information was obtained on the reduction and oxidation of 1.
The enzyme was a single polypeptide chain, acidic, and stable in solution. It had a molecular weight of 80,000 and no prosthetic groups.
The 5-step purification process resulted in greater than 1,000-fold purification and a 9% yield of the homogenous enzyme from extracts of S. steffisburgensis cells.
The enzyme reduced 1 by a two-electron mechanism …
The Systematics And Biology Of The Genus Zapus (Mammalia, Rodentia, Zapodidae), Gwilym S. Jones
The Systematics And Biology Of The Genus Zapus (Mammalia, Rodentia, Zapodidae), Gwilym S. Jones
All-Inclusive List of Electronic Theses and Dissertations
This study was undertaken to determine specific and intraspecific relationships within the genus Zapus (Mammalia, Rodentia, Zapodidae). Subspecies are based on the biological subspecies concept where the subspecies is an evolutionary step between a population and species. Approximately 20,000 Recent specimens and representatives of fossil taxa were examined. Cranial and postcranial characteristics, colors, and when available bacula, sperms and karyotypes were incorporated into the morphological analyses. In addition, published biological data were summarized and analyzed for evidence of primary and secondary isolating mechanisms. Supplemental data were acquired during collection of 450 specimens in midwestern and western United States, western Canada, …
Social, Spacing, And Cooperative Behavior Of The Collared Peccary, Tayassu Tajacu, John A. Byers, Marc Bekoff
Social, Spacing, And Cooperative Behavior Of The Collared Peccary, Tayassu Tajacu, John A. Byers, Marc Bekoff
Ethology Collection
Social behavior of the collared peccary was studied on the lower, eastern slopes of the Mazatzal Mountains, Arizona. The social unit in this species is a cohesive herd, in which small inter-individual distances are maintained. Two conspicuous acts, one olfactory and one auditory, functioned to maintain close spacing. Social interactions were brief but tended to synchronize the activities of animals and also to bring them closer together. Amicable and neutral actions occurred far more frequently than agonistic interactions. Most agonistic behavior did not involve physical contact. Cooperative nursing, predator defense, and feeding occurred; all adults were tolerant of young, and …
Electrophoretic And Immunological Studies On The Relationship Of The Brachyphyllinae And The Glossophaginae, Robert J. Baker, Rodney L. Honeycutt, Michael L. Arnold, Vincent M. Sarich, Hugh H. Genoways
Electrophoretic And Immunological Studies On The Relationship Of The Brachyphyllinae And The Glossophaginae, Robert J. Baker, Rodney L. Honeycutt, Michael L. Arnold, Vincent M. Sarich, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Electrophoretic and albumin immunological data indicate that the Brachyphyllinae as currently conceived is a natural assemblage, with Erophylla sezekorni and Phyllonycteris aphylla being more closely related to each other than either is to Brachyphylla cavernarum. In both data sets, values that distinguish Erophylla from Phyllonycteris are in the general range of values that characterize congeneric species of mammals. Immunological distance values for the species Glossophaga soricina, Monophyllus redmani, Anoura caudifer, Leptonycteris sanborni, Choeroniscus minor, and Hylonycteris underuoodi indicate that these taxa are approximately equidistant from the Brachyphyllinae. Immunological comparisons of Glossophaga and Monophyllus to Anoura, Leptonycteris, Choeroniscus, …
Kentucky Warbler (Vol. 57, No. 4), Kentucky Library Research Collections
Kentucky Warbler (Vol. 57, No. 4), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
The Hairless-Obese Mouse, William D. Stansfield
The Hairless-Obese Mouse, William D. Stansfield
Biological Sciences
Viable mice homozygous for two recessive autosomal genes, hairless (hr) and obese (ob) were produced with an average life span of 538 ± 34.1 days. On the average, hairless-obese mice weighed about 73 percent as much as obese mice. Since obese mice consumed approximately 73 percent as much oxygen per gram body weight per hour as hairless-obese mice at about 24°C, the weight averages appear to be closely inversely related to the oxygen consumption averages. The presence or absence of pelage seems to make a negligible contribution to oxygen consumption in these two types of obese …
Detergent Extraction Of A Presumptive Gating Component From The Voltage-Dependent Sodium Channel, W J. Culp, D T. Mckenzie
Detergent Extraction Of A Presumptive Gating Component From The Voltage-Dependent Sodium Channel, W J. Culp, D T. Mckenzie
Dartmouth Scholarship
A physiologically characterized radiolabeled neurotoxin complex obtained from venom of the scorpion Leiurus quinquestriatus has been used to identify detergent-solubilized presumptive sodium channel components in sucrose gradients. This toxin-binding component is found in extracts prepared from three sources of excitable membrane but appears to be absent from similar extracts prepared from nonexcitable membrane or from Torpedo californica membrane. Procedures that destroy the physiological activity of the Leiurus neurotoxin lead to a corresponding loss of toxin binding to the putative sodium channel component. The major component recognized by the Leiurus toxin sediments at 6.5 S. Scatchard analysis of quantitative binding experiments …
Mice Of The Genus Peromyscus In Guadalupe Mountains National Park, Texas, John E. Cornely, David J. Schmidly, Hugh H. Genoways, Robert J. Baker
Mice Of The Genus Peromyscus In Guadalupe Mountains National Park, Texas, John E. Cornely, David J. Schmidly, Hugh H. Genoways, Robert J. Baker
University of Nebraska State Museum: Mammalogy Papers
Mice of the genus Peromyscus are found in virtually every habitat type in Guadalupe Mountains National Park in West Texas. Because of their abundance and wide distribution, they comprise an important component of the park's ecosystem. The first known specimens of Peromyscus from the area now included in the park were collected by Vernon Bailey in 1901 (Bailey, 1905). He collected specimens of Peromyscus boyIii in Dog and McKittrick canyons. Davis (1940) collected P. leucopus at Frijole in 1938 and P. boylii in The Bowl in 1938 and 1939. Davis and Robertson (1944) reported collecting P. pectoralis from along Bell …
Nutritive Evaluation Of Warm-Season Grasses In Connecticut, R.W. Taylor, D.W. Allinson
Nutritive Evaluation Of Warm-Season Grasses In Connecticut, R.W. Taylor, D.W. Allinson
Storrs Agricultural Experiment Station
No abstract provided.
Scientist In The Making: [Dr. Alice Bendix Gottlieb], Fulvio Bardossi, Judith N. Schwartz
Scientist In The Making: [Dr. Alice Bendix Gottlieb], Fulvio Bardossi, Judith N. Schwartz
Rockefeller University Research Profiles
Rockefeller University Research Profiles are a series of scientific profiles that were published quarterly, from 1980-1990, by the Rockefeller University. Each issue features the research and achievements of an individual Rockefeller University scientist.
Estimation Of Harvest Rate And Vulnerability From Age And Sex Data, J. E. Pahoheimo, David Fraser
Estimation Of Harvest Rate And Vulnerability From Age And Sex Data, J. E. Pahoheimo, David Fraser
Wildlife Population Management Collection
A nonlinear least-squares procedure is developed to estimate harvest rate and differential vulnerability in wildlife populations that are harvested with 1 segment of the population more able than another. The method requires age data by category from a series of harvests, plus information on accumulated harvest effort, and assumes that the nonharvest mortality rate is the same for the categories. The data need not be from consecutive harvests, as long as the effort is known for missing Monte Carlo simulations were done to verify the estimation procedure. An example shows the application of the method to moose (Alces alces) harvest …
Activity Of Moose And White-Tailed Deer At Mineral Springs, D. Fraser, H. Hristienko
Activity Of Moose And White-Tailed Deer At Mineral Springs, D. Fraser, H. Hristienko
Social Behavior Collection
Activity of moose (Alces alces) and white-tailed deer (Odocoileus virginianus) was studied at two natural mineral springs (licks) in Ontario during the springtime and summer of 1977 to 1980. Most adult moose appeared to use a lick during a single 1- to 5-day period in a year; some returned at intervals during the season; and all seemed drawn principally by the mineral-rich water. Some young moose remained in the lick vicinity for 3 weeks or more, and often wandered in and out of the licks, grazing herbage as well as drinking. This suggested a social as well as a nutritional …
Seasonal Variation In The Foraging Behavior Of Some Migratory Western Wood Warblers, Richard L. Hutto
Seasonal Variation In The Foraging Behavior Of Some Migratory Western Wood Warblers, Richard L. Hutto
Biological Sciences Faculty Publications
I observed the foraging behavior of four warbler species (Dendroica petechia, Oporornis tolmiei, Geothlypis trichas, and Wilsonia pusilla) in the summer in Wyoming and in the winter in Nayarit, Mexico. Of six variables (absolute foraging height, relative foraging height, vegetation density, horizontal foraging position, feeding method, and foraging substrate) believed to be potentially important in distinguishing the warbler species ecologically, the two foragingheight variables provided the greatest separation of the four species in both summer and winter. An analysis of the behavioral similarity of each species from summer to winter revealed that feeding method was the least …
The Ecology Of Maine's Intertidal Habitats : A Report Prepared For The Maine State Planning Office, Peter F. Larsen, Lee F. Doggett
The Ecology Of Maine's Intertidal Habitats : A Report Prepared For The Maine State Planning Office, Peter F. Larsen, Lee F. Doggett
Maine Collection
The Ecology of Maine's Intertidal Habitats : A Report Prepared for the Maine State Planning Office
by Bigelow Laboratory for Ocean Sciences (Authors: Peter F. Larsen and Lee F. Doggett) , 1981.
Contents: Acknowledgements / List of Tables / List of Figures / Chapter 1 - Introduction / Chapter 2 - Human Impact on Intertidal Fauna / Chapter 3 - A Primer of Intertidal Ecology / Chapter 4 - A Sampler of Intertidal Species / Chapter 5 - Methodology / Chapter 6 - Results of Faunal Studies / Appendix 1 - Habitats With Date Sampled / Appendix 2 - List …
Drosophila Alcohol Dehydrogenase: Developmental Studies On Cryptic Variant Lines, Gurbachan Miglani, Franklin Ampy
Drosophila Alcohol Dehydrogenase: Developmental Studies On Cryptic Variant Lines, Gurbachan Miglani, Franklin Ampy
Department of Biology Faculty Publications
Thirty-five cryptic variant lines were used to examine the mechanisms involved in genetic modulation of alcohol metabolism in Drosophila. Late third-instar larval, preemergence pupal, and adult stages cultured at 18 and 28 C were examined. Spectrophotometric analyses for native alcohol dehydrogenase (ADH) activity and residual ADH activity after treatment with guanidine hydrochloride and heat were performed. Differential response of cryptic variants to treatment with the denaturants during development suggested that this variation may have an adaptive significance.
Agricultural Experiment Station News October 1981
Agricultural Experiment Station News October 1981
Agricultural Research Division: News and Annual Reports
CONTENTS:
From the Director’s Desk
The Curiosity Factor
IANR - 1982 Conference
Grants and Contracts
Sahs Sez
Energy Farm Progress
North Platte Station
Projects Approved
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - September 1981
New Experiment Station Personnel
South Dakota Farm And Home Research (Fall 1981), South Dakota State University
South Dakota Farm And Home Research (Fall 1981), South Dakota State University
South Dakota Farm and Home Research: 1949 -1998
This issue contains the 94th South Dakota Agricultural Experiment Station Annual Report. This report covers July 1, 1980 - June 30, 1981.
Director’s Comment [p] 2 “what price on comfort and beauty and vegetable gardens? What price on a windbreak? You might be surprised “
Honor to a sorghum scientist [P] 3 “ sorghum growing in South Dakota changed direction forever after Cliff Franzke’s remarkable discoveries in breeding plots“
Shut down? No way! [p] 5 “ Even if demand for fuels alcohol is at ‘simmer,’ SDSU’s plant is alive and brewing, ready for next go-round”
Fighting vandalism [p] 10 “Lighting, …
Number 11 (October 1981), Southern Fishes Council
Number 11 (October 1981), Southern Fishes Council
Southeastern Fishes Council Proceedings
A Revised List of the Freshwater Fishes of Maryland and Delaware. By D.L. Lee et al., 10 pp.
A Revised List Of The Freshwater Fishes Of Maryland And Delaware, David S. Lee, Steven P. Platania, Carter R. Gilbert, Richard Franz, Arnold Norden
A Revised List Of The Freshwater Fishes Of Maryland And Delaware, David S. Lee, Steven P. Platania, Carter R. Gilbert, Richard Franz, Arnold Norden
Southeastern Fishes Council Proceedings
No abstract provided.
Developmental Analysis Of The Tumorous-Head Eye-Antennal Disc In Drosophila Melanogaster: Fate Map And In Vivo Culture, Deborah J. Andrew
Developmental Analysis Of The Tumorous-Head Eye-Antennal Disc In Drosophila Melanogaster: Fate Map And In Vivo Culture, Deborah J. Andrew
Retrospective Theses and Dissertations
No abstract provided.
The Gradient Effect Of Homoeotic Transformations In The Tumorous-Head Mutant Of Drosophila Melanogaster, Julia L. Cook
The Gradient Effect Of Homoeotic Transformations In The Tumorous-Head Mutant Of Drosophila Melanogaster, Julia L. Cook
Retrospective Theses and Dissertations
Abnormalities in the eye of tumorous-head Drosophila melanogaster were compositely mapped to their respective positions in an archetypal eye. A dorso-ventrally oriented restriction line in the posterior eye, similar to that observed by Campos-Ortega and Waitz (1978) and Baker (1978) through clonal analysis, was observed. Restrictive areas that parallel and probably coincide with hose previously disclosed by Campos-Ortega (1978) were also demonstrated in both the dorsal and ventral eye. Transformation of tumorous-head Drosophila melanogaster were examined in order to investigate region specific correlations between head structure and their homoeotic replacements. Five different tumorous-head strains were analyzed and compared for maximum …
Compartments In The Imaginal Wing Disc Of Drosophila Melanogaster, Scott C. Fogerty
Compartments In The Imaginal Wing Disc Of Drosophila Melanogaster, Scott C. Fogerty
Retrospective Theses and Dissertations
No abstract provided.