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Articles 15031 - 15060 of 16174
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The Biology Of Geomylichus Gaomydis N. Sp. (Acari: Listrophoridae) From The Plains Pocket Gopher, Geomys B. Bursarius (Shaw), Charles Campbell Coffman
The Biology Of Geomylichus Gaomydis N. Sp. (Acari: Listrophoridae) From The Plains Pocket Gopher, Geomys B. Bursarius (Shaw), Charles Campbell Coffman
Electronic Theses and Dissertations
Geomylichus geomydis n. sp. is an obligate ectoparasite and associated with it on Geomys b. bursarius were large numbers of four other major ectoparasite species and small numbers of eight miscellaneous acarine taxa. Descriptions and measurements of life cycle stages of Geomylichus geomydis n. sp. are given. Geographical and host distribution records are also included. Seasonal population numbers of Geomylichus geomydis n. sp. and the other four major ectoparasite species were analyzed. Infestation rates for G. geomydis n. sp. were determined for seasons of the year and sexes and ages of the host. A least-squares analysis of variance was used …
Gentilesse And Gentility : Moral Criticism In The Novels Of Charles Dickens, Phyllis Anderson Ballata
Gentilesse And Gentility : Moral Criticism In The Novels Of Charles Dickens, Phyllis Anderson Ballata
Electronic Theses and Dissertations
There has been a considerable revival of interest in Dickens in the last thirty years. "As Bernard Darwin said when critical interest in Dickens was just beginning to gain momentum, ‘Mr. Pickwick once took another glass of punch just to see whether there was any orange-peel in it, because orange-peel always disagreed with him; and we can now all read Dickens yet again just to see if we were wrong about him.'" Edmund Wilson's seminal essay “Dickens: The Two Scrooges" appeared first in 1940 and again in The Wound and the Bow in 1947. Humphrey House's valuable Dickens World came …
A Study Of Selected Factors Associated With Environmental Attitudes Of Big Stone Lake Area Residents, Bradford George Perry
A Study Of Selected Factors Associated With Environmental Attitudes Of Big Stone Lake Area Residents, Bradford George Perry
Electronic Theses and Dissertations
A study of Big Stone Lake area residents was accomplished to aid in determining the following: (1) The existing attitudinal orientations of area residents relative to an incoming electrical generating facility (the Big Stone Power Plant); (2) The degree of association between selected variables and respondents' environmental attitudes; (3) The capability of the areas existing institutions to accommodate the local population, and possible effects of plant construction and operation; (4) The potential reference groups utilized for behavioral orientation. The unit of analysis consisted of Big Stone Lake area residents within a three county universe of discourse. Primary emphasis in sampling …
Recognizability And Reproducibility Of Airphoto Interpreted Landscape Units, Robert Dean Heil
Recognizability And Reproducibility Of Airphoto Interpreted Landscape Units, Robert Dean Heil
Electronic Theses and Dissertations
A physiographic terrain analysis study using the principles of airphoto interpretation was made: (1) to determine the internal homogeneity of airphoto interpreted mapping units, (2) to determine the variability in characteristics among different occurrences of the same mapping unit, and (3) to determine if the units differentiated were sufficiently different to warrant discrimination. The study was conducted in Sedgewick County, Colorado. The study area was comprised of four distinctly different land forms [sic]: a major river and its associated floodplain and terraces; a level to nearly level loamy upland plain; a level to sloping sandy upland plain; and steeply sloping, …
Carboxymethylcellulose As A Carrier For Follicle Stimulating Hormone In The Female Rat And Bovine, C. Leroy Johnson
Carboxymethylcellulose As A Carrier For Follicle Stimulating Hormone In The Female Rat And Bovine, C. Leroy Johnson
Electronic Theses and Dissertations
A series of biological assays were conducted to compare physiological saline (PSS) and carboxymethylcellulose (CMC) as carriers for follicle stimulating hormone (FSH) and to determine the optimum ratio of FSH to CMC. Constant individual dosages of 0.5 mg FSH were injected into a total of 384 immature female rats in four experiments. Treatments included single injections of FSH in PSS, FSH in 1 percent CMC at ratios (mg FSH: ml CMC) OF 1:3, 1:2, 1:1, 2:1, 3:1, 5:1 and FSH in 2 percent CMC at a ratio of 1:1. Parameters of primary and secondary response were ovarian and uterine weight, …
Evidence For The Presence Of Two Nucleases In Barley Tissue And The Influence Of Genotype On Their Properties, Clay G. Johnson
Evidence For The Presence Of Two Nucleases In Barley Tissue And The Influence Of Genotype On Their Properties, Clay G. Johnson
Electronic Theses and Dissertations
Several lines of evidence have shown that genetic variability exists within the barley species (Hordeum vulgare L.) with respect to the kinetics and specificity of yeast ribonucleic acid degradation. Initial efforts demonstrated that ribonuclease (RNase), in the crude soluble protein fraction from the cultivar Dicktoo, was inhibited by KC1 and phosphate. RNase activity was enhanced if heated to 60 C for short periods. In contrast, RNase in the crude soluble protein of the cultivar Tennessee Winter showed no altered response by either KC1 or phosphate. Maximal RNase activity was at pH 5.0 for extracts of both cultivars (0.16 M KC1), …
Estimation Of N Availability And No3-N Movement In Soils, Raymond Charles Ward
Estimation Of N Availability And No3-N Movement In Soils, Raymond Charles Ward
Electronic Theses and Dissertations
Objectives of this study were: (a) to evaluate several N soil tests that are used to estimate soil N availability, and (b) to measure the distribution of inorganic N in the soil profile after an application of fertilizer N. Small grain yield response from an application of 17, 34, or 67 kg N/ha was used as the parameter of N availability. These parameters were related to 23 independent variables by use of a step wise multiple regression program. Nitrogen soil tests and climatic factors (rainfall and temperature) were the independent variables involved in the analysis. Nitrogen soil tests included were …
The Effect Of Allopurinol (4-Hydroxypyrazolo(3,4-D) Pyrimidine) On Uric Acrid Metabolism In Differential Grasshoppers (Melanoplus Differentialis) And Armyworms (Pseudoletia Unipuncta), Henry C. Schroeder, Jr.
The Effect Of Allopurinol (4-Hydroxypyrazolo(3,4-D) Pyrimidine) On Uric Acrid Metabolism In Differential Grasshoppers (Melanoplus Differentialis) And Armyworms (Pseudoletia Unipuncta), Henry C. Schroeder, Jr.
Electronic Theses and Dissertations
Allopurinol, a potent inhibitor of xanthine oxidase in humans, was incorporated in the diets of differential grasshopper nymphs and adults and armyworm larvae. Uric acid contents of whole body homogenates decreased by highly significant rates. Feces uric acid decreased by highly significant rates in grasshopper nymphs and adults. Allopurinol also caused highly significant increases in mortality and inhibition of metamorphosis in study insects. These effects were not reversible by the addition of purine and pyrimidine bases, inosine, oxypurines, or uric acid. The effects were reversed by discontinuing application of allopurinol. Crude xanthine oxidase, assayed by measuring the reduction of NAD …
Urban Insurrections: A Multi-Disciplinary Approach Toward An Integrated Typology, James Russell Stewart
Urban Insurrections: A Multi-Disciplinary Approach Toward An Integrated Typology, James Russell Stewart
Electronic Theses and Dissertations
The purpose of this study is to investigate the possibility and appropriateness of employing a multi-disciplinary approach in the study of urban insurrections in an effort to construct a typology which would include all of the elements common to each disorder. The multi-disciplinary method is necessitated by the biases which are inherent in any analysis that is restricted to either a psychological, sociological, or politico-historical treatment of episodes of collective behavior. All of the disciplines make major contributions to any analysis, but it is the contention of this writer that the disciplines must be integrated before the most accurate depiction …
Effects Of Manganese Chloride On Gravid Gilts And Newborn Pigs, Dale A. Wade
Effects Of Manganese Chloride On Gravid Gilts And Newborn Pigs, Dale A. Wade
Electronic Theses and Dissertations
Excessive dietary manganese in young mammals has depressed hemoglobin levels, red blood cell synthesis and growth in some investigations, while in other research these were increased. Toxic levels, mode of action and specific physiological effects are unknown although manganese, cobalt and iron appear to compete for absorption mechanisms. Manganese functions in enzyme systems and in carbohydrate and lipid metabolism, is present in red cells and plasma and may be incorporated into the hemoglobin molecule. Gravid gilts were utilized in these investigations since piglet anemia is an economic problem and manganese effects in swine have not been fully defined. Gilt rations …
An Incrementally Distributed Mathematical Model Of A Watershed, Charles Arnold Onstad
An Incrementally Distributed Mathematical Model Of A Watershed, Charles Arnold Onstad
Electronic Theses and Dissertations
The utilization of distributed input parameters enables hydrologists to more adequately cope with watershed management problems. A distributed system aids in evaluating alternative solutions designed to alleviate a problem situation. As a result, the objectives of this study were (1) to develop a hydrological framework delineating the surf ace configuration of a watershed to consider parameter distribution; (2) to develop a model of hydrologic performance of a watershed using existing techniques and amenable to the physical framework; and (3) to demonstrate the versatility of the model using hypothetical data. The model versatility was demonstrated by showing the effects of different …
Amino Acid Supplementation Of Low Protein Layer Diets, Harlal Choudhury
Amino Acid Supplementation Of Low Protein Layer Diets, Harlal Choudhury
Electronic Theses and Dissertations
Experiments were conducted at the South Dakota State University Poultry Research Center to study the effects of amino acid supplementation of low protein diets on performance of laying type hens. Hans, housed in 8-inch cages, were fed at 24 weeks of age typical 16% protein corn-soy diets diluted with glucose to 10.8% protein and supplemented with 0.15% DL-methionine, 0.19% L-lysine and 0.04% DL-tryptophan. After about 20 weeks of depletion, supplements of 0.05 and 0.1% DL-threonine and DL-valine and 0.1% DL-isoleucine alone and in all combinations were fed for a further period of 16 weeks using a factorial design. Individual supplements …
The Theme Of Self-Discovery In Gone With The Wind, Patricia Robertson Mazzanti
The Theme Of Self-Discovery In Gone With The Wind, Patricia Robertson Mazzanti
Electronic Theses and Dissertations
No abstract provided.
Nitrate Movement In Freezing Or Frozen Soils, Donald G. Moore
Nitrate Movement In Freezing Or Frozen Soils, Donald G. Moore
Electronic Theses and Dissertations
Nitrate movement in freezing and frozen soils was studied in both disturbed and undisturbed soils by laboratory and field investigations. Thermoelectric cooling plates were placed in insulated freezing boxes. Soil cores placed in the freezing boxes were stored, frozen, or thawed at a specific temperature or temperature gradient. Field plots and soils columns reset into the field environment were used to observe migration of either fall- or winter-applied nitrate. Movement of surface applied nitrate was caused by passage of a freezing front through either saturated or unsaturated sand or saturated Vienna loam. The nitrate movement due to freezing was greater …
The Effect Of Level Of Dietary Protein On The Growth And Carcass Characteristics Of Growing-Finishing Swine Fed To A Heavy Weight, Keith E. Gilster
The Effect Of Level Of Dietary Protein On The Growth And Carcass Characteristics Of Growing-Finishing Swine Fed To A Heavy Weight, Keith E. Gilster
Electronic Theses and Dissertations
Two hundred sixteen crossbred barrows and 96 crossbred gilts were used in a series of three experiments to determine the effect of dietary protein level during three different growth periods on growth am quantitative and qualitative carcass traits of the growing-finishing pig. Pigs were fed from approximately 20 to 113 kilograms. Corn-soybean meal diets fortified with recommended levels of vitamins, minerals and an antibiotic were fed. Pigs fed 20, 18 or 16% protein diets from weights of 20 to 45 kg gained both significantly faster and more efficiently than pigs fed diets of 12% protein. Feeding a low (12%) protein …
The Horse As Symbol In D.H. Lawrence's St. Mawr, Dolores Elizabeth Horwood
The Horse As Symbol In D.H. Lawrence's St. Mawr, Dolores Elizabeth Horwood
Electronic Theses and Dissertations
What is most important about a novel like St. Mawr? The horse-symbol which dominates both the novel and this thesis? The "doctrine of spontaneity" which Lawrence espoused and wrote about on almost every page of the short novel? Or simply the fact that Lawrence's language is as spontaneous and powerful as the natural world of which he wrote? All of these are St. Mawr, and all are, to some degree, reflected in this thesis. Also reflected in this thesis is my admiration both for the works of Lawrence and for the man himself--and they are really one in the same.
Tolerance Studies To Wheat Streak Mosaic Virus In Winter And Spring Wheats, Fazal Rahman
Tolerance Studies To Wheat Streak Mosaic Virus In Winter And Spring Wheats, Fazal Rahman
Electronic Theses and Dissertations
Thirty-five winter and fourteen spring wheat varieties were evaluated for their reaction to wheat streak mosaic virus during 1969-1970 and 1970-1971. Plants were mechanically inoculated and the effects of virus were measured, relative to the control plots, in regards to seed yield, protein percentage, plant height, test weight, 1000-seed weight, number of tillers per plant, number of heads per tiller, number of seeds per head, and number of plants in the 2-foot subplot. Varieties were compared visually for their susceptibility to the virus in terms of percentage infection and severity of symptoms. Seed yield, plant height, test weight, 1000-seed weight, …
Bionomics Of Mallophaga Of Sharp-Tailed Grouse In South Dakota, Major L. Boddicker
Bionomics Of Mallophaga Of Sharp-Tailed Grouse In South Dakota, Major L. Boddicker
Electronic Theses and Dissertations
The ecologies of chewing lice (Insecta:Mallophaga) which parasitize sharp-tailed grouse, Pedioecetes phasianellus, were studied in southwestern South Dakota from 1964 to 1967. Five hundred twenty-eight hens, cocks and chicks were collected and examined for louse damage. Louse populations were monitored each month from December, 1964, to September, 1967. Five louse species which infested grouse in the study area were Goniodes nebraskensis Carriker, Amyrsidea megalosoma Overgaard, Lagopoecus perplexus Kellogg and Chapman, Goniocotes chrysocephalus and Lipeurus maculosis Clay. Goniodes nebraskensis fed on feather parts and skin debris and was found to have seasonally fluctuating populations. Cocks carried peak populations of 250 lice/host …
The Role Of Rainfall Impact And Surface Flow In Soil Detachment And Transport, Robert Alan Young
The Role Of Rainfall Impact And Surface Flow In Soil Detachment And Transport, Robert Alan Young
Electronic Theses and Dissertations
Soil erosion caused by rainfall is a very complex physical process. To evaluate the mechanism of erosion so that an assessment can be made of the extent to which it may be controlled necessarily begins with an understanding of the basic fundamental factors involved. The purpose of this study involves the development of an insight of the relative importance of the roles played by various contributors to the erosion process. Particular emphasis is placed on the contribution of rainfall detached soil to total soil loss. Three soil types, Barnes loam, Crofton silt loam and Central sandy loam, were prepared with …
A Simulation Of Sediment Deposit In Open Channels, Tsan-Wen Wang
A Simulation Of Sediment Deposit In Open Channels, Tsan-Wen Wang
Electronic Theses and Dissertations
In this study, two mathematical models have been developed to simulate sediment deposition in open-channel flow; a model based on three characteristic equations and a model based on two characteristic equations. A set of three partial differential equations for one dimensional transient flow with homogeneous density was provided to explain the mechanics of the phenomenon. By the method of characteristics, three partial differential equations were transformed into a set of three ordinary differential equations or a set of two ordinary differential equations by simplification in which the change of sediment layer thickness with respect to distance was assumed to be …
Analysis Of Variation Of River Flow And Water Quality In The White River Basin, Michael Stephen Thompson
Analysis Of Variation Of River Flow And Water Quality In The White River Basin, Michael Stephen Thompson
Electronic Theses and Dissertations
The main objectives of this White River Basin study were to analyze flow variation records, to investigate existing river water quality data as compared with the designated beneficial uses for the basin and to consider the influence of present and future irrigation development. Data were collected from a number of sources and brought together for interpretation with respect to these objectives. The streamflow study utilizes the streamflow records from 10 gaging stations in the White River Basin. It is expected that the results of this investigation may be of assistance to the South Dakota Water Resources Commission and the South …
Physiological Regulation Of Cyclic Flowering In Flax, Aurora Salazar Hovland
Physiological Regulation Of Cyclic Flowering In Flax, Aurora Salazar Hovland
Electronic Theses and Dissertations
The flowering pattern of flax (Linum usitatissimum, L.) is cyclic in nature with periods of blossoming separated by periods of rest. To study the regulation of flowering cycles, four experiments were conducted. The first two dealt with nutritional aspects of cyclic flowering by imposing environmental stresses which conceivably might regulate flowering pattern nutritionally. The third and fourth experiments dealt with regulation from hormonal systems and included in vitro regulation of bud growth by growth regulators as well as characterization of endogenous hormonal systems by fluorimetry and bioassays. In the first experiment, the effects of light intensity, temperature, nitrogen and defoliation …
The Effects Of Chlorpropamide In Diets Of Gravid Gilts On Embryo Survival, Fetal Weight And Fetal And Dam Blood Sugar Levels, Duane E. Wachholz
The Effects Of Chlorpropamide In Diets Of Gravid Gilts On Embryo Survival, Fetal Weight And Fetal And Dam Blood Sugar Levels, Duane E. Wachholz
Electronic Theses and Dissertations
Seventy-six primiparous, crossbred gilts averaging approximately 125 to 135 kg were used in a series of two experiments to determine the effects of chlorpropamide upon reproductive and blood criteria. The drug, fed at the rate of 1000 ppm (1816 mg per day) and 3000 ppm (5448 mg per day), was included in a 14% protein basal diet from the day following breeding until gilts were sacrificed after 60 or 95 days of gestation. The 515 fetuses collected from these gilts were used to obtain information about the effects of chlorpropamide on individual weights and blood glucose and fructose levels. Data …
A Study Of Selected Demographic Factors Associated With Changes In Age Structure In The Population Of South Dakota From 1960-1970, Robert Todd Wagner
A Study Of Selected Demographic Factors Associated With Changes In Age Structure In The Population Of South Dakota From 1960-1970, Robert Todd Wagner
Electronic Theses and Dissertations
A study of the population profile for South Dakota for 1960 and 1970 was made to determine: (1) the changes that transpired in the composition 0£ the population for the age categories 0-4, 0-14, 15-34, 35-64, 65+ and 75+; (2) the variation in the changes observed in the selected age categories when controlled according to residence, sex and race differentials; and (3) the extent to which changes in the basic demographic components of migration, fertility and mortality are associated with changes in the age interval 0-4. Each county in South Dakota was employed as the unit of analysis, and census …
Major Themes In The Novels Of Kurt Vonnegut, Jr., June A. Anderson
Major Themes In The Novels Of Kurt Vonnegut, Jr., June A. Anderson
Electronic Theses and Dissertations
Kurt Vonnegut, Jr. has written six novels which explore some of the most important problems confronting man in contemporary society. Little significant criticism has been written on Kurt Vonnegut since he began writing in 1949. Recently, however, he has experienced an increasing popularity with readers and critics who have found his novels successful probings into modern man’s feelings of alienation in a world which he perceives as increasingly absurd. This thesis is an analysis of Kurt Vonnegut’s use of black humor, satire and science fiction devices in his exploration of four major themes occurring throughout his novels: criticisms of science, …
Carlyle's Literature Of Heroism And Its Contemporary Model--Mao, Kang-I Eleanor Chang
Carlyle's Literature Of Heroism And Its Contemporary Model--Mao, Kang-I Eleanor Chang
Electronic Theses and Dissertations
Today when millions of Chinese people are shouting, "Long Live Chairman Mao” and waving their red books with flaming, uncontrollable enthusiasm, one wonders whether the worship is genuine, and whether this is the kind of worship which Carlyle means. However, the main emphasis of this thesis is on Carlyle's concept of heroism. Carlyle was greatly obsessed with the heroic ideal. After he was disappointed with the lack of modern heroes in America, he longed for a heroic nation to admire. Thus Carlyle, after a long pilgrimage became the good friend of Germany and the worshiper of German great men. He …
The Ontology Of Jean-Paul Sartre, James Ronald Lefler
The Ontology Of Jean-Paul Sartre, James Ronald Lefler
Electronic Theses and Dissertations
No abstract provided.
A Description Of The Use Of The Preposition E, Ex In Horace, Ovid, Propertius, Tibullus, And Vergil With A Concordance Of The Preposition For Each Author, Beatrice Mae Langston
A Description Of The Use Of The Preposition E, Ex In Horace, Ovid, Propertius, Tibullus, And Vergil With A Concordance Of The Preposition For Each Author, Beatrice Mae Langston
Electronic Theses and Dissertations
No abstract provided.
The Tragic Role Of Caddy Compson In The Sound And The Fury / By Daney Daniel Staub, Daney Daniel Staub
The Tragic Role Of Caddy Compson In The Sound And The Fury / By Daney Daniel Staub, Daney Daniel Staub
Electronic Theses and Dissertations
No abstract provided.
Lyapunov Stability Analysis Of Power Systems, R. Unnikrishnan
Lyapunov Stability Analysis Of Power Systems, R. Unnikrishnan
Electronic Theses and Dissertations
Over the past ten years, a vast outflow of research and publications has resulted from the use of Lyapunov's "second or direct method" of stability analysis. This research trend stems from the appearance of the original work of Lyapunov in 1892, more than three quarters of a century ago; but only recently has this concept been appreciated to the point where researchers in the area of stability of dynamic systems are aware of its potentialities. La Salle and Lefschetz wrote the first comprehensive book in English about Lyapunov stability theory. In most cases describing a physical system, the energy stored …