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Articles 9601 - 9630 of 10916
Full-Text Articles in Entire DC Network
Effects Of Diet And Sex On Perception And Tolerance Of Cold Pressor Pain, Jo Ellen Cooley
Effects Of Diet And Sex On Perception And Tolerance Of Cold Pressor Pain, Jo Ellen Cooley
Electronic Theses and Dissertations
No abstract provided.
Synthesis And Evaluation Of 4-Anilidopiperidine Derivatives As Potential Analgetics, Catherine Louise Gatchell
Synthesis And Evaluation Of 4-Anilidopiperidine Derivatives As Potential Analgetics, Catherine Louise Gatchell
Electronic Theses and Dissertations
No abstract provided.
Acoustic Cavitation From Short Pulses Of Ultrasound, Jeffrey Brian Fowlkes
Acoustic Cavitation From Short Pulses Of Ultrasound, Jeffrey Brian Fowlkes
Electronic Theses and Dissertations
No abstract provided.
Optimization By Statistical Experimental Methods Of Lamination Annealing Of Electrical Steels, Sin Kin Peng
Optimization By Statistical Experimental Methods Of Lamination Annealing Of Electrical Steels, Sin Kin Peng
Electronic Theses and Dissertations
No abstract provided.
The Construct Validity Of The Attitudes Towards Aspects Of Humansexuality Scale And The Passionate Love Scale, Jeffrey Dean Fross
The Construct Validity Of The Attitudes Towards Aspects Of Humansexuality Scale And The Passionate Love Scale, Jeffrey Dean Fross
Electronic Theses and Dissertations
No abstract provided.
Pharmacological And Behavioral Variables Affecting Tolerance To The Sedative Properties Diazepam And Midazolam / By Joseph P. Tizzano, Joseph P. Tizzano
Pharmacological And Behavioral Variables Affecting Tolerance To The Sedative Properties Diazepam And Midazolam / By Joseph P. Tizzano, Joseph P. Tizzano
Electronic Theses and Dissertations
No abstract provided.
One-Carbon Acetogenesis And Autotrophy With Clostridium Thermoautotrophicum / By M. Dean Savage, Maurin Dean Savage
One-Carbon Acetogenesis And Autotrophy With Clostridium Thermoautotrophicum / By M. Dean Savage, Maurin Dean Savage
Electronic Theses and Dissertations
No abstract provided.
Thermodynamics Of Cyclodextrin Inclusion Complexes, Maria Louise Andy
Thermodynamics Of Cyclodextrin Inclusion Complexes, Maria Louise Andy
Electronic Theses and Dissertations
No abstract provided.
Determinants Of Patient Satisfaction With Hospitals : A Path Model, Robert Lewis Lence
Determinants Of Patient Satisfaction With Hospitals : A Path Model, Robert Lewis Lence
Electronic Theses and Dissertations
No abstract provided.
Insoluble Residue Zones Within The Demopolis Chalk In Northeastern Mississippi And Southwestern Tennessee, Louis Lafontisee Knight
Insoluble Residue Zones Within The Demopolis Chalk In Northeastern Mississippi And Southwestern Tennessee, Louis Lafontisee Knight
Electronic Theses and Dissertations
No abstract provided.
Dark Dreams / By Jeffery Alan Ritch, Jeffery Alan Ritch
Dark Dreams / By Jeffery Alan Ritch, Jeffery Alan Ritch
Electronic Theses and Dissertations
No abstract provided.
Enrichment, Isolation And Characterization Of Alachlor, Carbofuran, And Dicamba-Degrading Bacteria Obtained From Soil, Neal R. Adrian
Enrichment, Isolation And Characterization Of Alachlor, Carbofuran, And Dicamba-Degrading Bacteria Obtained From Soil, Neal R. Adrian
Electronic Theses and Dissertations
The production and use of synthetic chemicals for pesticide control increased dramatically after World War II. They were found to be highly effective, cheap to produce and easy to apply. Development of these chemicals has been one of the major developments for agriculture. In the 1970's public health risks and environmental damage caused by agricultural chemicals was recognized. Problems of chronic exposure, improper waste disposal and environmental damage developed which led to the federal government regulating their use and manufacture. Pesticide manufacturers have a variety of physical and chemical disposal methods for pesticide wastes. Disposal or detoxification methods for pesticides …
Isolation And Characterization Of Temperature-Sensitive Protein Synthesis Mutants Of Escherichia Coli By Directed Mutagenesis Of The Defective Bacteriophage Lambda Fus2, Kenton L. Lohman
Electronic Theses and Dissertations
Mutagenesis of the defective transducing bacteriophage lambda fus2 was used to isolate a collection of temperature-sensitive mutants of E. coli in the major ribosomal protein gene cluster. Four mutants were examined in detail. Two of the mutants were resistant to the ribosomal antibiotics neamine and spectinomycin. Another mutant was defective in 50S ribosomal subunit assembly at 42(DEGREES)C. The 30S subunit proteins S17 and S19 were changed in two different mutants. Each protein migrated as a more basic species in two-dimensional gels of ribosomal proteins. Ribosomes from each of the four mutants examined showed a temperature-dependent reduction in translational activity in …
Paleoecology Of Benthic Foraminifera From The Upper Cretaceous Selma Group Of Mississippi, Daniel Graham Wells
Paleoecology Of Benthic Foraminifera From The Upper Cretaceous Selma Group Of Mississippi, Daniel Graham Wells
Electronic Theses and Dissertations
No abstract provided.
Sulfate Leaching From Sulphur Binding Agents In Experimental Asphalt Pavement, Angelina County, Texas, Peter Blanchette
Sulfate Leaching From Sulphur Binding Agents In Experimental Asphalt Pavement, Angelina County, Texas, Peter Blanchette
Electronic Theses and Dissertations
Sulfate leaching from sulphur-binding agents used in asphalt pavement was significantly higher (p>.05) from four layers of a mixture of a single aggregate base material of hot sand, when compared to all other treatments. Analysis of the data showed that the other treatments had no overall effect on the soil sulfates. Four layers of a single aggregate of hot sand increased the quantity of sulfates in the soil by 107%. I recommend the use of sulphur-asphalt binder with the type "D" base material throughout construction or when two layers of the type "D" base material are placed on top …
Human Lung Tryptase Purification And Characterization, Timothy J. Smith
Human Lung Tryptase Purification And Characterization, Timothy J. Smith
Electronic Theses and Dissertations
Human lung tryptase (HLT), a mast cell derived trypsin-like enzyme, was isolated from whole human lung tissue obtained at autopsy. Increased yields from this purification process allowed extensive characterization of the enzyme. One of the critical steps in the purification scheme was the use of a linear heparin gradient to elute active material from cellulose phosphate. Gel filtration studies in 1.0 M NaCl yielded an apparent M(,r) of 135,000, and subsequent electrophoresis on sodium dodecyl sulfate-polyacrylamide gels demonstrated the presence of two active species with apparent M(,r) = 30,900 and 31,600. Enzymatic activity was sensitive to NaCl concentrations above 0.05 …
Inheritance Of Seed Yield, Its Components And Harvest Index In Flax (Linum Usitatissimum) Crosses, Nigatu Tadesse
Inheritance Of Seed Yield, Its Components And Harvest Index In Flax (Linum Usitatissimum) Crosses, Nigatu Tadesse
Electronic Theses and Dissertations
From a historical standpoint, flax or linseed is one of the oldest crops currently under cultivation. Flax is widely adapted to a range of climatic and edaphic conditions. Cultivation of flax in the U.S. started during the colonial period following the settlers westward migration to the Dakotas. In the U.S., flax is an important oilseed crop being used primarily as a drying oil for industrial coatings. At present, the major flax producing states are the Dakotas and Minnesota. The concentration of flax acreage in those states has been attributed to favorable climatic conditions. However, the average seed yield of flax …
Plant Regeneration In Callus Cultures Derived From Young Inflorescences Of Switchgrass (Panicum Virgatum L.), Wayne A. Sargent
Plant Regeneration In Callus Cultures Derived From Young Inflorescences Of Switchgrass (Panicum Virgatum L.), Wayne A. Sargent
Electronic Theses and Dissertations
Switchgrass (Panicum virgatum L.) is a native, tall, warm season, perennial, sod-forming grass with vigorous roots and rhizomes. It is found growing throughout most of the United States. However, it is most abundant in the Great Plains Where it is a co-dominant of the Tall Grass Prairie. Grasses have played a predominant role in natural pastures and reseeded grasslands. The world's human population depends heavily on grasses for food and they are a major source of protein and energy for animal growth and performance. Improved breeding methods for grasses are therefore needed to produce higher yielding and better quality forages …
The Effects Of Biological Type And Breed Composition On Production In Beef Cattle, Michael D. Monfore
The Effects Of Biological Type And Breed Composition On Production In Beef Cattle, Michael D. Monfore
Electronic Theses and Dissertations
Evaluation of breeds has developed beyond simple phenotypic performance comparisons to estimation of the various genetic components, additive and nonadditive, contributed by a breed (Dickerson ,1969). Alenda et al.; Dillard et al. and Robison et al. demonstrated methods for estimating breed genetic and maternal effects in crossbred populations. Alenda and Martin extended the use of regression models to allow estimation of optimal breed combinations. This procedure, based on work by Dickerson, involves construction of a mathematical model describing performance for a trait as the sum of breed additive, breed heterotic, breed maternal and maternal heterotic effects. Crossbreeding results have been …
Distribution Of Algae In Eastern South Dakota Wetlands, James D. Kreitlow
Distribution Of Algae In Eastern South Dakota Wetlands, James D. Kreitlow
Electronic Theses and Dissertations
One hundred and forty algal samples were collected from 52 wetlands in eastern South Dakota to address the following objectives: 1) to inventory the algae occurring in eastern South Dakota wetlands. 2) to classify algal samples into wetland habitat types according to the wetland classification system of Cowardin et al. (1979). 3) to statistically determine if the composition of algal populations differed significantly among different habitat types. 4) to statistically determine if the taxa of algae obtained within the same habitat type differed according to differences in pH, conductivity, alkalinity and sampling method. 5) to determine the percent frequency of …
The Relationship Between Obesity And Fertility In The Lethal Yellow Mouse (Ay/A; C57bl/6j), Kim William Jeppesen
The Relationship Between Obesity And Fertility In The Lethal Yellow Mouse (Ay/A; C57bl/6j), Kim William Jeppesen
Electronic Theses and Dissertations
The lethal yellow gene, (Ay) is a genetic mutation in mice which causes a number of defects. First described in 1905 by Cuenot, the Ay/- mouse has been the subject of one hundred or more studies. Yet, primary genetic and molecular lesions caused by Ay remain unknown. Cuenot reported that Ay caused three aberrant phenotypic alterations; these included yellow coat color, obesity, and embryonic lethality in Ay homozygous embryos (Ay/Ay). Since 1905, a number of other Ay-induced abnormalities have been reported. Among these aberrations is Ay-induced reproductive senescence. It is this particular Ay character (i.e. reproductive failure of Ay/- mice) …
Plasma Pepsinogen Test For Hypobiotic Nematode Larvae In Abomasal Glands Of Sheep, Richard Alex Jensen
Plasma Pepsinogen Test For Hypobiotic Nematode Larvae In Abomasal Glands Of Sheep, Richard Alex Jensen
Electronic Theses and Dissertations
The American Association of Veterinary Parasitologists reported that nematodes in sheep represent an unquestionably great production loss, and that the absence of deworming on a routine basis would hamper modern sheep production. After ingestion, the infective third stage larva, or L3, exsheaths and burrows into the digestive glands, and becomes a fourth stage larva, or L4. According to Armour, 18 to 21 days after L3 ingestion occurs, the nematode reaches sexual maturity. However, while in the gastric glands, these L4 invade the parietal, or hydrochloric acid (HCl) secreting cells, damaging them, and replacing them with non-acid secreting cells. This leads …
Ribonuclease Ii :A Glycoprotein With Differential Distribution In Tissues Of Two Nonacclimated Cultivars Of Winter Barley, Gregory James Bunkers
Ribonuclease Ii :A Glycoprotein With Differential Distribution In Tissues Of Two Nonacclimated Cultivars Of Winter Barley, Gregory James Bunkers
Electronic Theses and Dissertations
The purpose of this research was to develop a more efficient procedure that would enable purification of adequate RNase necessary to further characterize the physical, chemical, and catalytic properties-of the enzymes involved. Two cultivars of winter barley were selected because of previous observations showing differences in RNase amounts and types which was related to freeze survival potential. Plant RNases from many species and cultivars of plants have been studied. Reddi proposed a classification system for plant ribonucleases that was later extended by Wilson. All enzymes that cleave a polynucleotide can be identified as either a nuclease or a phosphodiesterase. Wilson …
Tryptophan And Threonine Requirements Of Pigs Fed A Low-Protein, Corn-Sunflower Meal Diet, Barton S. Borg
Tryptophan And Threonine Requirements Of Pigs Fed A Low-Protein, Corn-Sunflower Meal Diet, Barton S. Borg
Electronic Theses and Dissertations
The ultimate goal of the pork industry is efficient production of quality pork for the least monetary investment. Most swine diets are formulated using feedstuffs which supply 100% natural protein. Different protein sources differ in their amino acid content and availability. For example, soybean meal has been shown to contain more lysine than sunflower meal and the lysine in soybean meal is more available to the pig than that of sunflower meal. Protein sources which supply the correct balance of available amino acids relative to the needs of the animal are considered as being protein sources of the highest monetary …
Measurement Of Denitrification Rates In Agricultural Soils, Pamela A. Bonrud
Measurement Of Denitrification Rates In Agricultural Soils, Pamela A. Bonrud
Electronic Theses and Dissertations
Modern agriculture with its fertilizers, pesticides, and mechanized irrigation has not risen above the constraints imposed by the natural nutrient cycles which determine availability of food on this planet. Research is needed to ensure these biogeochemical cycles can maintain a long-term balance with man's needed production. Microorganisms play major roles in biogeochemical transformations and cycling of elements through various environment. These microbial actions are essential to the survival of plants and animals in a particular habitat and will determine the potential productivity of an ecosystem. Those elements most intensely cycled include carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur, all of …
A Quarterly Econometric Model Of The U. S. Livestock Sector, Mary Ann Bennett
A Quarterly Econometric Model Of The U. S. Livestock Sector, Mary Ann Bennett
Electronic Theses and Dissertations
Given the importance of the livestock sector to both the United States and South Dakota economies, it is vital to have the best and most accurate information available for planning by both livestock producers and government agencies. In the next few sections, some of the more important economic problems faced by the livestock industry will be discussed. The first is due to the biological nature of livestock production. The others have to do with the effect of government policy decisions and world market conditions on the domestic livestock industry. Due to the biological nature of the livestock industry there are …
Construction Of Shuttle Lac Plasmid Pbw314 And Transformation Of Escherichia Coli And High Ethanol Yielding Saccharomyces Cerevisiae Strains With This Plasmid, Safiollah Bagherpour
Construction Of Shuttle Lac Plasmid Pbw314 And Transformation Of Escherichia Coli And High Ethanol Yielding Saccharomyces Cerevisiae Strains With This Plasmid, Safiollah Bagherpour
Electronic Theses and Dissertations
Cheese whey is a by-product of the dairy industry and contains approximately 5% lactose, 0. 9% nitrogenous compounds, and small amounts of vitamins and minerals. It has often been treated as waste. In addition to the loss of these nutrients, its disposal creates pollution problems. Lactose which is the chief nutrient in whey, could be more profitably utilized by being converted into ethanol. Unfortunately, naturally occurring strains of brewer’s yeast (Saccharomyces cerevisiae) are unable to metabolize lactose and hence cannot convert it to ethanol. The overall objectives of my study were: 1.) To construct a S. cerevisiae - Escherichia coli …
Relationships Of Food Faddism To Critical Thinking, Nutrition Knowledge And Some Demographic Characteristics, Mary Angelyn Auch
Relationships Of Food Faddism To Critical Thinking, Nutrition Knowledge And Some Demographic Characteristics, Mary Angelyn Auch
Electronic Theses and Dissertations
A 1972 national survey conducted for the Food and Drug Administration (FDA) documented the pervasiveness of food faddism in the U.S. Among a randomly selected sample, fifty-two percent of the people had used vitamin or mineral supplements at some time during their lives. Ten percent of the sample, representing ten percent of the American population, believed that there are benefits to taking more vitamins than are normally needed. Three fourths of the sample believed that vitamins provide energy, and that feeling tired and run down indicates a probable need for more vitamins. One fifth believed that cancer and arthritis are …
Evaluation Of Seasonal Habitat Use By White-Tailed Deer In Eastern South Dakota, Thomas James Kramlich
Evaluation Of Seasonal Habitat Use By White-Tailed Deer In Eastern South Dakota, Thomas James Kramlich
Electronic Theses and Dissertations
Seasonal use of selected habitat types by white-tailed deer (Odocoileus virginianus) was investigated using radio telemetry locations during 1983 and 1984, on a predominantly agricultural area in east-central South Dakota. In the summer of 1983, radio-collared deer used corn, shelterbelts, and wetlands in proportion to their availability. Soybeans, grainfields, and grasslands were avoided. Deer selected shelterbelts in the fall and wetlands during the winter months, for protective cover. Habitat use shifted in the spring and shelterbelts received heavy use, once they became free of drifted snow. Shelterbelts continued to be selected by deer during the summer of 1984. IN the …
Evaluation Of Structure And Growth Of Bluegills And Black Bullheads Stocked With Largemouth Bass In South Dakota Farm Ponds, Charles E. Morris
Evaluation Of Structure And Growth Of Bluegills And Black Bullheads Stocked With Largemouth Bass In South Dakota Farm Ponds, Charles E. Morris
Electronic Theses and Dissertations
A two-year study estimated standing stock, growth, condition, survival rates, and population structure of bluegills (Lepomis macrochirus) and black bullheads (Ictalurus melas) stocked in South Dakota farm ponds with largemouth bass (Micropterus salmoides). Bluegills and black bullheads reproduced during the second growing seasons and by the end of the study three year-classes of fishes were present in most ponds. Mean back-calculated bluegill total lengths at annuli 1-3 were 58, 125, and 153 mm, respectively. Mean back-calculated black bullhead total lengths at annuli 1-3 were 82, 182, and 240 mm, respectively. A significant north vs south difference (P≤0.05) in third-year bullhead …