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Articles 7081 - 7110 of 8975
Full-Text Articles in Entire DC Network
Emily Bronte And Folk Tradition / By Sara Ellen Selby, Sara Ellen Selby
Emily Bronte And Folk Tradition / By Sara Ellen Selby, Sara Ellen Selby
Electronic Theses and Dissertations
No abstract provided.
Agricultural Workers And Labor Laws In Pureto Rico, 1800-1873 / By Neysa Rodriguez, Neysa Rodriguez
Agricultural Workers And Labor Laws In Pureto Rico, 1800-1873 / By Neysa Rodriguez, Neysa Rodriguez
Electronic Theses and Dissertations
No abstract provided.
Evaluation Of Urea And Dried Whey In Diets Of Cows During Early Lactation, David Paul Casper
Evaluation Of Urea And Dried Whey In Diets Of Cows During Early Lactation, David Paul Casper
Electronic Theses and Dissertations
Previous research indicated that soluble nitrogen may be utilized more efficiently for rumen microbial production in diets containing dried whey. To further evaluate this, 33 Holstein, cows (30 multiparous and 3 primiparous) were fed one of three concentrate mixes containing all natural proteins (SBM). 1% urea (U), or 1% urea and 30% dried whey (UDW) from wk 3 through 16 postpartum. Urea replaced portions of the soybean meal in the SBM mix while dried whey replaced portions of the corn and soybean meal. Cows were fed total mixed rations consisting of 40% (dry matter basis) corn silage, 10% alfalfa hay, …
Host-Plant Interactions Of Diabrotica Cristata (Coleoptera: Chrysomelidae) And Prairie Grasses In East-Central South Dakota, Niamoye D. Yaro
Host-Plant Interactions Of Diabrotica Cristata (Coleoptera: Chrysomelidae) And Prairie Grasses In East-Central South Dakota, Niamoye D. Yaro
Electronic Theses and Dissertations
This thesis concerns the biology of Diabrotica cristata a small relatively inconspicuous beetle inhabiting relict prairie and grass lands in the Great Plains Region of North America. Diabrotica cristata has been classified taxonomically in the virgifera group and is, therefore, closely related to several very important pest species including Diabrotica virgifera virgifera LeConte, the western corn rootworm (WCR), Diabrotica virgifera Krysan and Smith, the Mexican corn rootworm (MCR) and Diabrotica barberi Smith and Lawrence, the northern corn rootworm (NCR). The genus Diabrotica (Chrysomelidae) is composed of three groups: fucata, virgifera and signifera. The virgifera group not only includes the above …
Robert Bly And The Twofold Consciousness, Mary A. Thelen
Robert Bly And The Twofold Consciousness, Mary A. Thelen
Electronic Theses and Dissertations
"How beautiful to walk out at midnight in the moonlight/ dreaming of animals." It is samplings of Robert Bly's poetry such as these which have prompted Eliot Weinberger to wonder, "What kind of windbag and language slob would write such a line?" But there are also such fine and startling images as "The bare trees more dignified than ever" or "lamplight that falls on all fours in the grass," which Ian Hamilton admires. Hayden Carruth has encapsulated the view of many of Bly's readers, who regard him as one of the most annoying and exciting poets of the 1960's and …
The Effect Of Varying Lysine Levels In Starter Diets On Pig Performance And On Subsequent Performance And Carcass Characteristics, Robert C. Thaler
The Effect Of Varying Lysine Levels In Starter Diets On Pig Performance And On Subsequent Performance And Carcass Characteristics, Robert C. Thaler
Electronic Theses and Dissertations
Lysine is the first limiting amino acid in most cereal-based diets for swine. Thus, in cereal-based diets the lysine- requirement must be met first if the pig's protein anabolism is to be efficient and maximal. The most widely used diet in the swine industry today is the corn-soybean meal diet. Corn is deficient in lysine, but soybean meal is a relatively good source of lysine, so soybean. meal is added to the corn base to increase the diet's lysine content. Synthetic lysine also can be added to corn-soybean meal diets to increase lysine content or added as a replacement for …
Possible Relationships Between Surface Water Chemistry And Aquatic Plants In The Northern Great Plains, Kristin K. Sletten
Possible Relationships Between Surface Water Chemistry And Aquatic Plants In The Northern Great Plains, Kristin K. Sletten
Electronic Theses and Dissertations
The possibility of establishing relationships between surface water chemistry and the occurrence of certain aquatic plant species was investigated on 281 wetland sites throughout the northern Great Plains. Ninety-seven species of aquatic plants were selected for the study, selection being based on the direct association of plants with water and on the number of sites at which the plants were found. The ranges and means of surface water conductivity, total alkalinity and pH values were determined on a species by species basis. Of the three chemical parameters measured, conductivity of surface water appeared to have the greatest influence on the …
A Critical Analysis Of Helen Keller's Socialist Speaking, Nancy J. Nelson
A Critical Analysis Of Helen Keller's Socialist Speaking, Nancy J. Nelson
Electronic Theses and Dissertations
The purpose of this inquiry was to determine. the effectiveness and the effect of the Socialistic rhetoric of Helen Keller as revealed in selected speeches on behalf of the Socialist movement. For purposes of this study it was necessary to define effectiveness and effect. Effectiveness refers to how well the rhetorical choices matched the established criteria. The effect is the immediate and long-range audience responses to· Keller's rhetoric. To accomplish the stated purpose, an attempt was made to answer the following questions: 1. What was the-historical background of the American Socialist Movement during the period in which these speeches were …
Abundance, Biomass, And Diversity Of Aquatic Invertebrates In Level Ditches And Adjacent Natural Emergent Marsh In An Eastern South Dakota Wetland, Michael R. Broschart
Abundance, Biomass, And Diversity Of Aquatic Invertebrates In Level Ditches And Adjacent Natural Emergent Marsh In An Eastern South Dakota Wetland, Michael R. Broschart
Electronic Theses and Dissertations
The aquatic invertebrate communities of level ditches and adjacent natural emergent marsh in a South Dakota prairie wetland were sampled during the summer of 1982. Collections were made in both the water column and the bottom substrates. Forty-five taxa were collected. Analysis of variance indicated that a significantly greater mean number of taxa and a larger mean number of all macroinvertebrates were present in level ditches than in the natural emergent marsh. No differences were detected for mean biomass of all macroinvertebrate taxa collectively. Several taxa had a greater mean number and biomass in the level ditches than in the …
Factors Affecting Water Quality And Microinvertebrate Distribution Within A Small Black Hills Stream, Henry G. Drewes
Factors Affecting Water Quality And Microinvertebrate Distribution Within A Small Black Hills Stream, Henry G. Drewes
Electronic Theses and Dissertations
A comparative evaluation of the benthic macroinvertebrate fauna was conducted concurrently with a physiochemical investigation on Slate Creek, Pennington County, South Dakota in the Black Hills. Water quality differences between years and among stations were detected in Slate Creek from both physiochemical and macroinvertebrate evaluations. The primary sources of disturbance to the Slate Creek study site during the sampling period were landscaping activities within the Deerfield Park Resort development and livestock activity. Increased runoff and elevated stream flows in 1982 were responsible for the variation in water quality between years. Water quality differences among stations indicated significantly (P < 0.05) higher turbidity and temperature immediately below the development site in 1981 and 1982. Significantly (P < 0.05) higher fecal coliform bacteria counts were observed at station 5 for both years, resulting from increased livestock activity. Phosphates and nitrates were highest at stations 4 and 5 but were not significantly (P > 0.05) different …
The Manufacture Of Cheddar Cheese Using Vacuum Concentrated Milks, Charles A. Bemis
The Manufacture Of Cheddar Cheese Using Vacuum Concentrated Milks, Charles A. Bemis
Electronic Theses and Dissertations
The United States (US) cheese industry has grown rapidly in the past decade. From 1971 to 1981, milk fat utilization for cheese manufacture increased from 17.7 to 27.6% of the total US milk fat supply, accompanied by a 49% increase in sales of cheese per capita (34). Offsetting substantial increases in sales and prices for cheeses, there have been marked increases in the cost of labor, energy, waste treatment, raw materials, and equipment. Hence, the manufacturers are realizing narrower profit margins. As a survival mechanism, cheesemakers have sought to maximize cheese yields per unit of milk, since increases in cheese …
Environmental, Nutritional, And Physiological Factors Associated With Hoof Growth And Wear In Holstein Cows, Lisa Hartson Bemis
Environmental, Nutritional, And Physiological Factors Associated With Hoof Growth And Wear In Holstein Cows, Lisa Hartson Bemis
Electronic Theses and Dissertations
Environmental, nutritional, and physiological parameters associated with hoof growth and wear were evaluated using data from 140 Holstein cows in five herds. Growth and wear of the dorsal and lateral regions of the front and rear outside claws were measured at approximately 2 mo intervals over a 14 mo period. Housing facilities varied from continuous confinement on concrete to confinement in dirt lots and included loafing sheds, free stall barns, and one comfort stall facility with rubber mats. Lateral hoof regions grew 24% faster than dorsal regions in the front and 20% faster in the rear hooves. Rear hooves grew …
Selenium And Arsenic Interaction In The Rat, Cecile Younan Andraos
Selenium And Arsenic Interaction In The Rat, Cecile Younan Andraos
Electronic Theses and Dissertations
Selenium was discovered by Berzelius and Gahn in 1817 while they were examining the sediment from a sulfuric acid plant at Gripsholm, Sweden. However, it was not until 1929 that the greatest interest in selenium and its compounds was aroused in relation to its toxic effects in the animal body. At that time, Franke at the South Dakota Experiment Station and other workers discovered that selenium was the toxic agent causing "Alkali disease", a chronic poisoning that affects livestock raised in certain areas of the Great Plains of the United States. It was found that certain plants could take up …
Biological And Chemical Analysis Of Echinacea Pallida (Nutt.) Nutt. With Emphasis On The Insecticidal Component, Gregory A. Bame
Biological And Chemical Analysis Of Echinacea Pallida (Nutt.) Nutt. With Emphasis On The Insecticidal Component, Gregory A. Bame
Electronic Theses and Dissertations
The genus Echinacea, family Asteraceae, contains several species of herbaceous, warm season perennials possessing varying amounts of biologically active materials. Echinacea is indigenous to the central or west-central U.S. and ranges from Texas and Alabama to Saskatchewan in Canada. McGregor recognizes 9 species and 2 varieties of Echinacea; the taxa of western distribution occurring in dry areas of prairie and grassland ecotype, those of more eastern distribution in dry, rocky, open woodlands, hillsides, or glades. All taxa are considered to be drought-tolerant, disease and pest-resistant plants of agriculturally marginal land. Morphological variation within this genus has led to much debate …
The Efficiency Of Four Selection Schemes For Improvement Of Cold Tolerance And Disease Resistance In Maize, Andrew Rocholl Bettendorf
The Efficiency Of Four Selection Schemes For Improvement Of Cold Tolerance And Disease Resistance In Maize, Andrew Rocholl Bettendorf
Electronic Theses and Dissertations
The economic worth of any individual (plant or animal) is usually dependent on more than one trait. Since there is usually more than one trait involved in selection, a breeder’s problem is determining the relative importance of each of these traits. They must then be placed in some logical order so that the best material is selected for the following generations. Arriving at reasonable economic weights for each trait may be fairly difficult, especially if not much is known about the material one is working with. other factors to consider when selecting within a population are, how heritable the trait …
The Effects Of Climate On Total Digestible Nutrient Consumption Of The Cow And Calf And Cow Efficiency, David G. Boom
The Effects Of Climate On Total Digestible Nutrient Consumption Of The Cow And Calf And Cow Efficiency, David G. Boom
Electronic Theses and Dissertations
Animal productivity is a function of energy intake and heat production. The body core temperature must remain relatively constant and this is accomplished by regulating the balance between heat gain and heat loss. If, due to climatic stress, more energy is needed to maintain homeothermy, less energy is available for production. The range of ambient temperatures in which the animal can maintain homeothermy without increasing its rate of heat production is the zone of thermal neutrality. The lower border of the zone of thermal neutrality is the lower critical temperature. Temperatures below this zone cause the animal to immediately increase …
An Epidemiological Study Of Listeria Monocytogenes Using Virulence, Agglutination, And Agglutinin Adsorption Techniques, James R. Hoffman
An Epidemiological Study Of Listeria Monocytogenes Using Virulence, Agglutination, And Agglutinin Adsorption Techniques, James R. Hoffman
Electronic Theses and Dissertations
The serological characterization of Listeria monocytogenes apparently began with the work by Seastone, who determined that a close serological relationship existed between cultures collected from humans and animals. Schultz et al. and Julianelle et al. later suggested that two serological types existed that could be connected to the origin of the strain. These initial studies were expanded by the work of Paterson, who studied the antigenic structure of Listeria monocytogenes using agglutination and adsorption techniques. Paterson studied somatic and flagellar antigens. The somatic antigens were prepared by growing bacteria on 1% glucose agar at 37°C for 18 h, removed with …
Forage Production And Utilization Systems For Cow-Calf Beef Production, Muftah M. Imsalem
Forage Production And Utilization Systems For Cow-Calf Beef Production, Muftah M. Imsalem
Electronic Theses and Dissertations
Native grasslands in South Dakota are extremely variable and have steadily declined in condition. Pasture techniques are currently available to modify vegetation composition and productivity to bring about higher yields. Development of pasture systems that increase forage production is of a major importance in South Dakota. Fransen found that tame pastures and interseeded native range produced more gain per hectare than native range. The average daily gain of the cattle dropped severely at the end of the season in native and native-interseeded range. However, the tame pastures required substantial inputs in terms of fertilizer nitrogen. The purpose of this study …
Inheritance Of Plant Height And Other Agronomic Traits In Nine Crosses Of Sunflower (Helianthus Annuus L.), Saif Ur Rehman Khan
Inheritance Of Plant Height And Other Agronomic Traits In Nine Crosses Of Sunflower (Helianthus Annuus L.), Saif Ur Rehman Khan
Electronic Theses and Dissertations
The USSR is the world leader in production of sunflower seeds harvesting about 4 to 4.5 million hectares per year with production remaining fairly stable since 1960. The US and Argentina rank second and third having planted about 1.6 and 1.3 million hectares during 1981 respectively. Spain, China, Romania, Bulgaria, Australia, and Canada follow in importance. The total amount of land devoted to sunflower production in the world increased from 8.4 million hectares in the 1960's to more than 11.6 million in 1981. Sunflower became a commercial crop· in the US during the late 1960's. Production during the 1970's increased …
A Study Of The Influence Of The Chinese Rhetorical Tradition On Current Speeches By Chinese Speakers In The Republic Of China, Jian Koh-Cheng
A Study Of The Influence Of The Chinese Rhetorical Tradition On Current Speeches By Chinese Speakers In The Republic Of China, Jian Koh-Cheng
Electronic Theses and Dissertations
The purpose of the study was to determine the nature of the rhetorical tradition in China and its influence on the current rhetorical situation in the Republic of China. Speeches delivered from 1975 to 1983 were examined to see whether this tradition still influences speakers. This study sought to find the relationship of Chinese ·traditional rhetoric to modern rhetoric in the ROC. Answers to these questions were sought: 1. What is the rhetorical tradition of China as found in the philosophy of Confucius and Mencius? 2. Does this rhetorical tradition still influence speakers in Taiwan, Republic of China? To answer …
A Morphometric Analysis Of Ultrastructural Changes In The Shoot Apex Of Glycine Max During The Morphogenetic Shift From Quiescence To Germination, Saba Mebrahtu
Electronic Theses and Dissertations
This research is a study of a morphogenetic shift of the soybean shoot apex from quiescence to germination. The minute changes in the organelles were recorded with the use of stereological methods. The ultrastructural data was statistically analyzed. The ultimate goal was the recognition of relationships between the cell's functional units and its structural units, with the identification of morphogenetic regulation mechanisms. Morphometric image analysis of cellular organelles indicated that storage reserves were transformed from lipid bodies to plastid starch. Proplastids and promitochondria, so difficult to differentiate in early stages of germination became obvious by 96 hours post germination. Significant …
The Effects Of Sex And Delayed Chill On The Biophysical And Organoleptic Properties Of Intact And Restructured Beef Steaks, Bruce Colin Paterson
The Effects Of Sex And Delayed Chill On The Biophysical And Organoleptic Properties Of Intact And Restructured Beef Steaks, Bruce Colin Paterson
Electronic Theses and Dissertations
The meat industry presently utilizes large, inefficient storage coolers for cooling carcasses rather than more efficient systems for cooling edible boneless meat. When these facilities are combined with the practice of chilling, reheating and rechilling tons of product each day, the need for efficient processing systems becomes evident. It is this inefficiency which has led to hot processing. Hot processing is the removal of bone and trim prior to chilling and it has several possible economic benefits: (1) removal of bone and trim prior to chilling which reduces the energy required to chill; (2) more rapid chilling; (3) decreased refrigeration …
Effects Of Different Feed Additives On The Growth Of Turkeys, Hossein Samie
Effects Of Different Feed Additives On The Growth Of Turkeys, Hossein Samie
Electronic Theses and Dissertations
A total of 3780 male and 216 female large white Nicholas turkeys were used in four experiments to determine the effect of different feed additives on turkey performance. In the first experiment, the effect of 60, 120 or 240 ppm Cu on the growth of male turkeys was examined as affected by 75, 100 or 125% of the suggested NRC (1977) levels of sulfur amino acids (S-AA). The second experiment was designed to study the effect of 60 ppm Cu, Neo-Terramycin at 200 gm per ton, (80 gm Terramycin after 12 weeks) and Zn- bacitracin at 50 gm per ton …
Effects Of Cellulase From Trichoderma Viride On Wheat Bran Utilization And The Minerals Influenced By Cell Wall Components In Broiler Diets, Kee Thomas Nahm
Effects Of Cellulase From Trichoderma Viride On Wheat Bran Utilization And The Minerals Influenced By Cell Wall Components In Broiler Diets, Kee Thomas Nahm
Electronic Theses and Dissertations
Two studies were conducted to evaluate the effect on the productive value of a diet for broilers containing high levels of wheat bran with a supplement of cellulose from Trichoderma viride. In both studies, broiler-type, mixed sex chicks were divided into replicate groups of 10 birds each and fed for 5 weeks. The wheat bran was defatted and added at 0, 10 and 20% levels. A fourth group received the 20% wheat bran plus a cellulose enzyme added at the level of 0.008%. The summarized data showed that the 20% wheat bran plus cellulose treatment had no significant effect on …
Protein Utilization By Cattle And Sheep As Affected By Feed Source, Processing Treatment And Level Of Supplementation, Luis Fernando Palmer
Protein Utilization By Cattle And Sheep As Affected By Feed Source, Processing Treatment And Level Of Supplementation, Luis Fernando Palmer
Electronic Theses and Dissertations
Feeding experiments, digestion-nitrogen balance trials, rumen fermentation studies and blood parameter determinations were conducted to evaluate protein utilization by cattle and sheep as affected by feed source represented by ingredients varying in solubility or degradability or protein and amino acid profile, processing treatment and level of supplementation. Growing and finishing cattle shower improved performance when fed ground ear corn or corn silage as basal diets supplemented with various sources of protein. Higher rates of gain and lower feed requirements were observed for cattle fed diets supplemented with urea, soybean meal, heat-treated soybean meal, heat-treated mix of 60% soybean meal and …
Brood-Rearing Period Cover Use By Wild Turkey Hens In Southcentral South Dakota, Kevin Francis Mccabe
Brood-Rearing Period Cover Use By Wild Turkey Hens In Southcentral South Dakota, Kevin Francis Mccabe
Electronic Theses and Dissertations
Brood-rearing period cover use by wild turkey (Meleagris gallopavo) hens with broods and those without, in Gregory County, South Dakota, was determined in order to formulate management suggestions for grassland/riparian woodland habitat. Two hens with broods and 12 hens without broods were studies through telemetry and direct observations form 5 July through 2 August and 3 August through 17 August of 1982 and 1982. Vegetational data were collected in 1983. Hens with broods selected for the grass/forb-dominated understory and 52% open canopy of south-facing savannah woodlands while their broods were less than 4 weeks of age. After 4 weeks, broods …
A Comparative Study Of Frederick Manfred's Lord Grizzly And A.B. Guthrie Jr.'S The Big Sky, Carol Dornberger-Jackson
A Comparative Study Of Frederick Manfred's Lord Grizzly And A.B. Guthrie Jr.'S The Big Sky, Carol Dornberger-Jackson
Electronic Theses and Dissertations
The purpose of this thesis is to do a comparative study of two books by two men who are interested in the mountain man and his period in American history. Frederick Manfred and A. B. Guthrie Jr., authors of Lord Grizzly and The Big Sky, have a deep love for the American West. Their books are about America's frontier and the dreams of the mountain men who first explored it. The mountain men's dreams were of freedom from civilization, excitement in discovery, and love for the vast sea of plains and soaring grandeur of mountains. The spirit of the wild …
The Effects Of Limited Energy Supplementation On Pasture And Level Of Dietary Energy In The Feedlot On The Finishing Performance And Carcass Traits Of Beef Cattle, Mark J. Goetz
Electronic Theses and Dissertations
Traditionally, pasture and range have been the major source of nutrients for grazing animals. The manner by which ruminants survive and thrive on range with no additional nutrients other than those supplied by forage is unique in the animal kingdom. Nevertheless, western man has cultivated a taste for grain-finished beef. To meet that demand, modern beef production involves both the grazing of forages and the feeding of rations high in concentrates. Major disruptive changes, either physical (as in prolonged drought) or economical (fluctuation in market prices) encourage the reexamination of traditional systems. Within the last 10 years, extreme fluctuations in …
Effects Of Dietary Dehydroepiandrosterone (Dhea) On Body Weight, Food Consumption, And Glucose-6-Phosphate Dehydrogenase (G6phd) Activity In Lethal Yellow (Ay/Aw) And White-Bellied Agouti (Aw/Aw) Mice (Strain 129/Sv), Lisa Deette Staber
Electronic Theses and Dissertations
Dehydroepiandrosterone (DHEA) is a non-competitive inhibitor in vitro of glucose-6-phosphate dehydrogenase (G6PDH), the rate controlling enzyme in the pentose-phosphate shunt. This pathway produces NADPH, a necessary co-factor for the synthesis of fatty acids and ribo- and deoxyribonucleotides. Some researchers believe that by decreasing G6PDH activity, DHEA produces an anti-obesity and anticarcinogenic effect in laboratory mice and rats genetically inclined toward obesity and cancer. It is DHEA's anti-obesity effect which lends it to the study of the yellow obese (AY/-) mouse with its peculiar pleiotropic syndrome. Yellow obese AY/AW mice were found to be more susceptible to dietary DHEA's effects than …
Forage Potential Of Some Annual Native Trifolium Species In The Ethiopian Highlands, Levi Mudogog Shadeya Akundabweni
Forage Potential Of Some Annual Native Trifolium Species In The Ethiopian Highlands, Levi Mudogog Shadeya Akundabweni
Electronic Theses and Dissertations
As initial testing, this research aimed to screen, describe and evaluate annul native clovers as potential forages. Pure clover stands were studied at three Ethiopian highland locations with introduced species used for comparison (checks). Intraspecific differences in T. tembense were studied as a spaced plant. Interspecific differences were evaluated with and without added phosphate on: dry matter yields at different harvest times, self-reseeding, seed yields, leaf tissue mineral contents, proportions of plant organs, and forage quality. Yields of clovers sown during short (SR) and long rainy seasons (LR) were compared. Native clovers performed significantly better than checks. Screening was best …