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Articles 7051 - 7080 of 8975
Full-Text Articles in Entire DC Network
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 …
Wildlife Response To Stand Structure Of Green Ash Woodlands, Robert A. Hodorff
Wildlife Response To Stand Structure Of Green Ash Woodlands, Robert A. Hodorff
Electronic Theses and Dissertations
Vegetation, birds and mammals were sampled over two years in two types of green ash woodlands in extreme northwestern South Dakota. Woodlands referred to as closed canopy stands consisted of dense stands of various species of trees and shrubs in different size and age classes. Woodlands referred to as open canopy stands had sparse stands of older trees, with intermediate seedling, sapling and tall shrub layers nearly absent. Closed stands had significantly greater (P = .002) coverage of shrubs in the understory than open stands while open stands had significantly greater (P = .004) total coverage of grasses than closed …
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 …
Effectiveness Of Shelterbelts In Improving Microclimatic Conditions For Pheasants In Eastern South Dakota, Todd Matthew Schneider
Effectiveness Of Shelterbelts In Improving Microclimatic Conditions For Pheasants In Eastern South Dakota, Todd Matthew Schneider
Electronic Theses and Dissertations
To evaluate wintering habitat for ring-necked pheasants (Phasianus colchicus), this study compared microclimate regimes , as determined by wind and temperature, between shelterbelts containing 1 or 2 rows of coniferous tree species with shelterbelts comprised entirely of deciduous tree species and between wetland and shelterbelt habitats. Maximum temperatures within both shelterbelt types, particularly deciduous shelterbelts, were cooler than outside ambient air temperature during summer. Throughout November, December, and January, minimum temperatures in coniferous shelterbelts types were significantly (P≤0.04) warmer than deciduous shelterbelt types. Effectiveness of shelterbelts in reducing wind velocity decreased from an average of 71% during summer to 28% …
Extruded Blend Of Soybean Meal And Sunflower Seeds For Dairy Cattle In Early Lactation, James K. Drackley
Extruded Blend Of Soybean Meal And Sunflower Seeds For Dairy Cattle In Early Lactation, James K. Drackley
Electronic Theses and Dissertations
An extruded blend of 44% crude protein soybean meal (50%), sunflower seeds (45%), and premix (5%) was evaluated as a protein and energy source for dairy cows in early lactation. Thirty Holstein cows (24 multiparos and 6 primiparous) were assigned to either a corn-oats-soybean meal concentrate (SBM) or a concentrate where soy-sunflower blend replaced all soybean meal and portions of corn and oats (SSF). Dry matter of total mixed diets was 36% corn silage, 21% alfalfa haylage, and 43% concentrate. Yields of milk (33.6 and 33.8 kg/day) and 4% fat-corrected milk (30.9 and 30.5 kg/day) were similar for cows fed …
Protected Methionine And Heat-Treated Soybean Meal For High-Producing Dairy Cows, Che-Ming Jimmy Yang
Protected Methionine And Heat-Treated Soybean Meal For High-Producing Dairy Cows, Che-Ming Jimmy Yang
Electronic Theses and Dissertations
The effectiveness of a rumen-protected methionine preparation was studied as an amino acid source for high-producing dairy cows during wk 4 through 16 postpartum. Twenty-four Holstein cows (14 primiparous and 10 multiparous) were fed concentrate containing heat-treated· soybean meal without or with 50 g/cow/day of added ruminally protected methionine product which provided 15 g of added DL-methionine daily. Cows were fed 16% crude protein mixed diets containing 30% of dry matter as corn silage, 15% as alfalfa hay, and 55% as concentrate. Milk production and composition were adjusted for pretreatment values (3 wk postpartum) by analysis of covariance. Adjusted milk …
The Effects Of The Diet Suggested In The United States Dietary Goals On Serum Cholesterol Levels, Paula Kay Peters Madigan
The Effects Of The Diet Suggested In The United States Dietary Goals On Serum Cholesterol Levels, Paula Kay Peters Madigan
Electronic Theses and Dissertations
The effects of the diet suggested in the United States Dietary Goals on serum cholesterol levels was studied by using male Holtzman rats. There were twelve experimental diets. All of the diets contained 28% of total calories as fat. The type of fat was either saturated, unsaturated, or half saturated and half unsaturated. Two sources of carbohydrate, sucrose and cornstarch, and tw6 levels of each, 52% and 62%, were examined. The source of protein was the same in all diets, but varied in amount, 10% or 20% of total calories. The type of fat did not yield a significant difference …
The Effect Of Prostaglandin F2cl Administered During Early Gestation In Ewes, Paul E. Naasz
The Effect Of Prostaglandin F2cl Administered During Early Gestation In Ewes, Paul E. Naasz
Electronic Theses and Dissertations
Synchronization of estrus in the cyclic ewe can be accomplished by the use of prostaglandin F2a. Estrous synchronization offers the possibility of more uniform offspring, concentration of parturition which would allow for better use of facilities and labor, and the utilization of outstanding sires through artificial insemination. Some current estrous synchronization regimes for ewes consist of exposure to rams for a period of time followed by an intramuscular injection of prostaglandin F2a (PGF) to all ewes that have not previously mated. Administration of PGF to ewes that have already mated, however, may lead to termination of pregnancy. Before application of …
A Laboratory Study Concerning The Control Of Black-Tailed Prairie Dogs (Cynomys Ludovicianus) With Sodium Monofluoroacetate (Compound 1080), Charles David Ward
A Laboratory Study Concerning The Control Of Black-Tailed Prairie Dogs (Cynomys Ludovicianus) With Sodium Monofluoroacetate (Compound 1080), Charles David Ward
Electronic Theses and Dissertations
Sodium monofluoroacetate (Compound 1080) is a highly toxic rodenticide which has ·been used in control of prairie dogs (Cynomys spp.). The toxic effects of Compound 1080 to non-target species caused Compound 10SO to be banned as a rodenticide. This study was initiated to develop a low-level bait which could be effective in prairie dog control and would have a higher margin of safety to non-target species. Compound 1080 was administered to 83 black-tailed prairie dogs (Cynomys ludovicianus). The primary research objective was to determine the acute ·oral median lethal dose (LD50) in black-tailed prairie dogs. This was established at 0.173 …
Studies On The Immune Response To Bovine Herpesvirus Type 4 (Bhv-4) In Cattle, Shirley K. Wynia
Studies On The Immune Response To Bovine Herpesvirus Type 4 (Bhv-4) In Cattle, Shirley K. Wynia
Electronic Theses and Dissertations
Systemic cell mediated, systemic antibody, and local antibody responses were evaluated in cattle inoculated with bovine herpesvirus type 4 (BHV-4). Experiment 1 was designed to evaluate an in vitro lymphocyte transformation assay to quantitate the response of peripheral blood leukocytes (PBL) from cattle to BHV-4 infected target cells. Three types of target cells, bovine embryonic lung, bovine skin fibroblast-13, and Vero, were inoculated with BHV-4 at different multiplicities of infection and fixed in glutaraldehyde to retain BHV-4 surface antigens. Optimum effector to target cell ratios and length of incubation for the assay were also determined. Vero cells infected at an …
The Relationship Between Age-And Sex-Specific Death Rates And Quality Of Life Factors In The South Dakota Population 65 Years Of Age And Older In 1960, 1970 And 1980, Joyce I. Nelson
Electronic Theses and Dissertations
This study investigated age- and sex-specific death rates in South Dakota Counties among the population 65 and over in 1960, 1970 and 1980. Census Bureau and Vital Statistic data were employed to answer the basic question of how death rates and quality of life factors were related. Quality of life factors included; economics, urbanization, health technology, and education, which were operationalized at the county level. A description of county quality of life factors and age- and sex-specific death rates for males and females was presented. County death rates for the older population were regressed with county quality of life factors …
Lungworm Infections, Reproduction And Summer Habitat Use Of Bighorn Sheep In Custer State Park, South Dakota, Gary C. Brundige
Lungworm Infections, Reproduction And Summer Habitat Use Of Bighorn Sheep In Custer State Park, South Dakota, Gary C. Brundige
Electronic Theses and Dissertations
Bighorn sheep (Ovis canadensis) were once indigenous to the Black Hills and Badlands of South Dakota. When European settlers moved into this region during the late 1800' s, market hunting, loss of habitat, and introduction of animal diseases and parasites caused the subspecies of the region, the Audubon's bighorn sheep (O. c. auduboni), to become extinct by 1916 (Buechner 1960). To reestablish bighorn sheep in the Black Hills, 8 Rocky Mountain bighorn sheep (O. c. canadensis) were introduced into the former range of the Audubon's sheep in 1922. Finding the habitat to be very suitable, this small population increased to …
The Performance Of Quartzite And Natural Aggregate In Flexible Pavement : A Case Study, Mohammed Hossien Roghani
The Performance Of Quartzite And Natural Aggregate In Flexible Pavement : A Case Study, Mohammed Hossien Roghani
Electronic Theses and Dissertations
Two parking lots, one made of quartzite and the other made of natural aggregate, were compared using the Marshall method mix design test, skid resistance tests, and economic studies. It was found that the pavement with quartzite uses 13.3% less asphalt, gives a higher mean skid resistance, and saves 0.13 dollars per square yard per year during the life span of the pavement assumed in this study. It was determined that quartzite pavement is preferable to pavement with natural aggregate. The flexible pavement structure in a parking lot must have enough stability to meet the load exerted from parked cars …
The Sandhills Of South Dakota : A Regional Study, Robert E. Weimer
The Sandhills Of South Dakota : A Regional Study, Robert E. Weimer
Electronic Theses and Dissertations
This thesis is a systematic regional study of the Sandhills of South Dakota. The Sandhills of South Dakota occupy an area of slightly more than 400 square miles in south central South Dakota and are a northward extension of the much larger expanse of Nebraska Sandhills. Their distribution in South Dakota includes the southern portions of Shannon, Bennett, Todd, and Tripp counties. The Sandhills extend northward from the South Dakota-Nebraska border approximately five miles. Their east-west extent is some 100 miles. Sand dunes comprise the prevailing surface formation of the Sandhills. The dunes resulted from erosion of the underlying loosely …
Comparative Nutritive Value Of Soybean Meal, Sunflower Meal, And Meat And Bone Meal For Egg Production, Smart M. Oruseibio
Comparative Nutritive Value Of Soybean Meal, Sunflower Meal, And Meat And Bone Meal For Egg Production, Smart M. Oruseibio
Electronic Theses and Dissertations
Two experiments were conducted over a period of two years to evaluate the comparative nutritive value of soybean meal, sunflower meal, and meat and bone meal. Experiment 1 consisted of 864 Babcock--3OO pullets randomly distributed into twelve diet treatments. Each treatment was replicated six-times with twelve birds per unit. Layers diets were formulated at 16, 14, and 12% protein levels with and without amino acid supplementation. The 12% amino acid supplemented level served as the control in the experiment. Soybean meal, sum-lower meal, and eat_ and bone meal were utilized as major sources of protein supplement in yellow-corn based diets. …
Response Of Five Spring Wheat Cultivars To Drought, Gregory Keith Hess
Response Of Five Spring Wheat Cultivars To Drought, Gregory Keith Hess
Electronic Theses and Dissertations
Response of plants to water stress are numerous and interrelated. Morphological traits and growth patterns have been studied and reviewed extensively. Root growth patterns, leaf area and thickness, presence of cuticle hair and waxes, leaf movement, and wilting are only a few traits studied. Metabolic functions and how water stress affects these processes through stomatal behavior, transpiration rates and carbon dioxide exchange rates have also been reviewed. Plant breeders are continually searching for traits which aid in selecting for high yielding genotypes in any one environment. Moisture is often limiting in South Dakota's environment, leading to relatively low grain yields …
Effects Of Partial Homogenization Of Milk On Yield And Quality Of Cheddar Cheese, Anand Rao
Effects Of Partial Homogenization Of Milk On Yield And Quality Of Cheddar Cheese, Anand Rao
Electronic Theses and Dissertations
In the past decade, the cheese industry in the United States (US) has grown rapidly, with cheese sales increasing by 33% (36). The cheese industry, in 1983, utilized 29.2% of total US milkfat supply as compared to 20.3% utilization in 1973 (36). Compared to the total cheese production of 2,059,2Z8 kg (4,539,822 lb) in 1982, 2,185,611 kg (4,818,449 lb) of cheese were manufactured in 1983 in the .US (36). The increased production of cheese was made possible by modifications in the cheese making process and advent of modern equipment; and it was fostered by increased demand .and higher prices. One …
Tender Is The Night : A Critical Study, Beth Ann Maxfield
Tender Is The Night : A Critical Study, Beth Ann Maxfield
Electronic Theses and Dissertations
No abstract provided.
Evaluation Of Yield And Quality Of Cheddar Cheese Manufactured From Milk With Added Whey Protein Concentrate, Kirk Alan Baldwin
Evaluation Of Yield And Quality Of Cheddar Cheese Manufactured From Milk With Added Whey Protein Concentrate, Kirk Alan Baldwin
Electronic Theses and Dissertations
Large quantities of whey are produced as a by-product from the manufacture of cheese or casein. The United States has an annual cheese production of about 2.2 billion kg. The cheese industry has also experienced a steady increase in cheese production of about 6% a year (44). In the process, nearly 18.1 billion kg of whey are produced. Whey was once a discarded product of little value to the cheese producers. With the advent of laws and regulations governing the disposal of whey, whey became a problem that had few solutions. Even today, with the high cost of disposal and …
Identification Of Volatile Compounds Produced By Brevibacterium Linens That Inhibit Molds, Samuel E. Beattie
Identification Of Volatile Compounds Produced By Brevibacterium Linens That Inhibit Molds, Samuel E. Beattie
Electronic Theses and Dissertations
Mold contamination of processed food and its raw ingredients is a major concern in agriculture. Although at one time mold contamination of cheese and other foods was considered to be of little conse9uence, discovery of carcinogenic and/or teratogenic toxins (73) produced by molds commonly associated with food has changed this innocuous and frequent inconvenience into a serious health consideration. The presence of mold on or in cheese is a common occurrence, indeed, many cheeses depend upon molds to provide characteristic cheese flavor and texture. Cheeses such as blue, Roquefort, Camembert, and Brie are ripened under controlled conditions by species of …
Trapped, Tarnished Heroines : A Study Of Women In Selected Plays Of Eugene O'Neill And Tennessee Williams, Peggy Hussey Webb
Trapped, Tarnished Heroines : A Study Of Women In Selected Plays Of Eugene O'Neill And Tennessee Williams, Peggy Hussey Webb
Electronic Theses and Dissertations
No abstract provided.
Stratigraphic Distribution And Biometric Relations Of Two Uppercretaceous Exogyra Species In Northeast Mississippi And Southwest Tennessee, John Edward Johnston
Stratigraphic Distribution And Biometric Relations Of Two Uppercretaceous Exogyra Species In Northeast Mississippi And Southwest Tennessee, John Edward Johnston
Electronic Theses and Dissertations
No abstract provided.
Synthesis And Immunological Evaluation Of Peptidomimetics, Zainab A. Al-Shakarchi
Synthesis And Immunological Evaluation Of Peptidomimetics, Zainab A. Al-Shakarchi
Electronic Theses and Dissertations
No abstract provided.
A Comparative Study Of Students Utilizing Computer Assisted Instruction And Students Not Utilizing Computer Assisted Instruction, Constance German
A Comparative Study Of Students Utilizing Computer Assisted Instruction And Students Not Utilizing Computer Assisted Instruction, Constance German
Electronic Theses and Dissertations
No abstract provided.
Illustrations For The Encyclopedia Of Southern Culture : Interpretations Of Essays Concerning Contemporary Southern Cultural Distinctiveness, Gary E. Hauser
Illustrations For The Encyclopedia Of Southern Culture : Interpretations Of Essays Concerning Contemporary Southern Cultural Distinctiveness, Gary E. Hauser
Electronic Theses and Dissertations
No abstract provided.
A Study Of The Urinary Metabolites Of Primaquine In Rats, Lucia Jorge
A Study Of The Urinary Metabolites Of Primaquine In Rats, Lucia Jorge
Electronic Theses and Dissertations
No abstract provided.
Predator-Prey Interaction And Evolution Among Naticid Gastropodsof The Neogene Chesapeake Group Of Maryland, Jon Moxie Olivier
Predator-Prey Interaction And Evolution Among Naticid Gastropodsof The Neogene Chesapeake Group Of Maryland, Jon Moxie Olivier
Electronic Theses and Dissertations
No abstract provided.
Land And Life : Edwin Muir's Final Vision / By James Larry Wilson, James Larry Wilson
Land And Life : Edwin Muir's Final Vision / By James Larry Wilson, James Larry Wilson
Electronic Theses and Dissertations
No abstract provided.
The Stratigraphy Of The Owl Creek Formation And Midway Group Of Northern Tippah County, Mississippi / By Charles Travis Swann, Charles T. Swann
The Stratigraphy Of The Owl Creek Formation And Midway Group Of Northern Tippah County, Mississippi / By Charles Travis Swann, Charles T. Swann
Electronic Theses and Dissertations
No abstract provided.
In Vivo Evaluation Of Various Dosage Forms Of -Pdc-Diacetate In The Rat / By James Neil Rider, James Neil Rider
In Vivo Evaluation Of Various Dosage Forms Of -Pdc-Diacetate In The Rat / By James Neil Rider, James Neil Rider
Electronic Theses and Dissertations
No abstract provided.