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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 …
Tissue Culture Of Echinacea Purpurea (L.) Moench, Kevin M. Alberts
Tissue Culture Of Echinacea Purpurea (L.) Moench, Kevin M. Alberts
Electronic Theses and Dissertations
The genus Echinacea, member of the Asteraceae fami1y, contains several species of warm season perennials with brightly colored heads that are disease, pest and drought tolerant in varying degrees. Their native habitat ranges from Texas to Canada. In Europe, their use as garden ornamentals has gained greater interest than in the United States. Several new cultivars and races of E. purpurea have been developed in Germany for use as ornamentals. The flower col or ranges from deep purple red through rose-pink to white. The dried rhizome and roots causes numbness and salivation when placed on the tongue. It was used …
Parallel Plate Viscous Dampers, Mohammd Mawid
Parallel Plate Viscous Dampers, Mohammd Mawid
Electronic Theses and Dissertations
The subject of this investigation is to analyze the oscillation of multi-plates immersed in a viscous fluid and the damping forces. The concept of multi-plates oscillating in a viscous fluid with the view of using the plates as a damper is believed to represent a new application. Conventional dampers consist of a cylinder filled with a fluid, usually oil, containing a piston which is free to move under the action of an external force. The velocity of the piston is regulated by the viscous resistance of the fluid flowing through the annular space between the piston and the cylinder walls, …
Seal Development And Infiltration As Affected By Rainfall Kinetic Energy, Deah Abed Mahamad
Seal Development And Infiltration As Affected By Rainfall Kinetic Energy, Deah Abed Mahamad
Electronic Theses and Dissertations
The infiltration of water into soil has been studied for more than 50 years. Much of the effort has concentrated on obtaining infiltration rate measurements for different soils and on developing equations which describe the resulting data. A portion of the infiltration literature has dealt with the large affect that the development of a surface seal has had on the resulting infiltration measurement of a soil. This surface seal may be more significant in determining the infiltration characteristics of a soil than any other single or perhaps combination of factors. Surface seal development has been linked to both rainfall energy …
A Comparison Of High-Performance Short-Duration And Repeated-Seasonal Grazing Systems, Jerry David Volesky
A Comparison Of High-Performance Short-Duration And Repeated-Seasonal Grazing Systems, Jerry David Volesky
Electronic Theses and Dissertations
Six replications of l-herd 16-subunit High-Performance Short-Duration (HPSDG) and Repeated-Seasonal (RSG) (May-Sep.) grazing system treatments were compared during 1983 and 1984 at the Cottonwood Range and Livestock Research Station located in western South Dakota. Calves and lambs were allotted to the experimental pastures in sets approximately equal on an animal unit basis. Animal numbers were adjusted with put-and-take sets to attain planned forage levels for each cycle of rotation in HPSDG and comparable end of season forage use levels in both treatments. The HPSDG system was operated with four cycles of rotation that had 1, 2, 2 and 3 occupation …
Predicted Response To S1 Selection For Agronomic And Disease Resistance Traits In Two Sunflower Populations, Syed Sadaqat Mehdi
Predicted Response To S1 Selection For Agronomic And Disease Resistance Traits In Two Sunflower Populations, Syed Sadaqat Mehdi
Electronic Theses and Dissertations
Variances, heritabilities, genetic and phenotypic correlations, and predicted gains were computed for quantitative disease resistance and agronomic traits from pooled S1 family data of Gene Pool II and ND 761 Helianthus annuus L. populations. Broad-sense heritability estimates for all traits were significant in both populations. Observed genotypic correlation coefficients were larger than their corresponding estimates of phenotypic correlation coefficients. Significant positive genetic correlations between resistance to Alternaria blight and Septoria leaf spot; and non-significant genetic correlations between Sclerotinia wilt disease reaction and agronomic traits were observed in both populations. Resistance to Phoma black stem was not significantly correlated with resistance …
Modeling Of Soil Water Flow And Root Uptake, V. Rasiah
Modeling Of Soil Water Flow And Root Uptake, V. Rasiah
Electronic Theses and Dissertations
The soil water pressure head, h, versus soil water content, 9, and the hydraulic conductivity, K, versus θ, relationships appear as functional coefficients in the non-linear partial differential water flow model. Before the flow equation can be used to simulate the flow of water through soils, the h versus θ and K versus θ relationships must be established. This requires the estimation of the parameters that describe the h versus θ and K versus θ functional relationships. In-situ water retention and hydraulic conductivity measurements were determined from the knowledge of initial and boundary conditions and water content profiles during drainage. …
The Relationship Between Reciprocal Spring By Winter Wheat Crosses And The Contribution Of Their Parents To Hybrid Performance, George Warren Partelow
The Relationship Between Reciprocal Spring By Winter Wheat Crosses And The Contribution Of Their Parents To Hybrid Performance, George Warren Partelow
Electronic Theses and Dissertations
Five diverse spring and five diverse winter wheat cultivars were crossed in all possible spring by winter combinations including their reciprocals to determine whether agronomic differences in reciprocal spring by winter crosses occur, and to determine the relative contribution of spring and winter parents to general and specific combining ability. Traits examined in the F1 generation in this greenhouse study included: 1) grain yield (g/plant) 2) number of spikelets per spike 3) total kernel weight (g) per spike 4) number of kernels per spike 5) number of tillers per plant 6) weight (g) of 100 kernels 7) length (mm) of …
Nutritional Factors Modifying Fatty Liver Hemorrhagic Syndrome In Caged Laying Hens, Chandi C. Rakshit
Nutritional Factors Modifying Fatty Liver Hemorrhagic Syndrome In Caged Laying Hens, Chandi C. Rakshit
Electronic Theses and Dissertations
Three experiments each with two phases were conducted to study the effect of different levels of distillers dried grain (DDG), fat, oats and a mixture of oats and DDG on Fatty Liver Hemorrhagic Syndrome (FLHS) in caged laying hens. The second phase of each experiment was conducted by force-feeding the same diets used in the first phase at 120% of their normal intakes. This produces FLHS and thereby permits studying the effect of diets. During the force-feeding period of the third experiment, serum estradiol levels of hens from each treatment and each type of feeding were measured to study the …
The Differences In Learning Styles Between Generic And Adult Nursing Students, Dianne L. Clemens
The Differences In Learning Styles Between Generic And Adult Nursing Students, Dianne L. Clemens
Electronic Theses and Dissertations
The objectives of this study were:
1. To identify the learning style of generic nursing students enrolled in a midwestern Associate Degree Nursing Program,
2. To identify the learning style of adult nursing students enrolled in a midwestern Associate Degree Nursing Program,
3. To identify differences in learning styles between generic and adult nursing students enrolled in a midwestern Associate Degree Nursing Program,
4. To identify variables associated with learning style in generic and adult nursing students enrolled in a midwestern Associate Degree Nursing Program.
The Application Of A Falls Risk Index, Marcelline R. Harris
The Application Of A Falls Risk Index, Marcelline R. Harris
Electronic Theses and Dissertations
This study examined the prospective use of a falls risk index. The research question was: To what extent do the intrinsic factors identified in the Tinetti et al. falls risk index predict which patients are likely to experience a fall. Hogue's ecological model of falls in late life provided a conceptual framework for the study.
Direct observation was used to collect baseline data from a convenience/purposive sample of 26 male patients in a midwest nursing home care unit with a rehabilitation focus. Patients were then assigned to one of three risk groups: yes-fall, 30% chance of fall, no-fall. Reports of …
Hopelessness In The Institutionalized Elderly, Joanne Hansen
Hopelessness In The Institutionalized Elderly, Joanne Hansen
Electronic Theses and Dissertations
The losses and stresses of the elderly make them susceptible to powerlessness which ultimately may lead to hopelessness and death. The use of client initiated interventions designed to increase the individual's control of the environment may interrupt the powerlessness, hopelessness and death cycle. The research question for this study addressed the influence of client-initiated interventions on the hopelessness score among the institutionalized elderly.
The specific research questions were:
I. To what extent do the use of client-initiated interventions affect the level of hopelessness in the institutionalized client on a short- and long-term basis?
2. Which of the client-initiated interventions have …
Support Group Effects On Perceived Ease Of Transition Of The Lpn To Ad Student, Illa H. Reeve
Support Group Effects On Perceived Ease Of Transition Of The Lpn To Ad Student, Illa H. Reeve
Electronic Theses and Dissertations
The objectives of this study were: 1. To determine the expectations of the members entering a support group developed for the purpose of easing the transition from LPN to AD student.
2. To determine the extent those expectations are met by participation in the support group.
3. To determine the extent of perceived stressors change after participation in the support group as related to:
a. type of identified stressor
b. degree to which an identified stressor is a source of stress.
The Effect Of Nutritional Education Programs On Serum Cholesterol Values, Josephine A. Kahler
The Effect Of Nutritional Education Programs On Serum Cholesterol Values, Josephine A. Kahler
Electronic Theses and Dissertations
The three objectives of this study were: 1. To test a simplified nutritional education program and it's effectiveness on lowering serum cholesterol values.
2. To compare the effectiveness of two (partial vs. intense) nutritional education programs on the post serum cholesterol values.
3. To determine which demographic data influences a change in serum cholesterol values in response to a simplified nutritional program.
The Effect Of Nocturnal Noise Levels In Upper Midwestern Longterm Care Facilities On Sleep Interference In Selected Residents' Well-Being, Jane C. Walgenbach
The Effect Of Nocturnal Noise Levels In Upper Midwestern Longterm Care Facilities On Sleep Interference In Selected Residents' Well-Being, Jane C. Walgenbach
Electronic Theses and Dissertations
The objectives of this study were:
1. To determine noise levels in selected upper Midwestern longterm care facilities at night during August and September.
2. To determine to what extent noise levels interfered with residents' nocturnal sleep.
3. To determine to what extent sleep interference affected residents' well-being.
4. To determine to what extent noise levels interfered with residents' well-being.
Growth, Survival, And Reproductive Success Of Largemouth Bass Stocked With Selected Forage Fishes In South Dakota Ponds, R. Dean Beck
Growth, Survival, And Reproductive Success Of Largemouth Bass Stocked With Selected Forage Fishes In South Dakota Ponds, R. Dean Beck
Electronic Theses and Dissertations
Five fish stocking combinations were evaluated to determine effects of forage availability and geographic location on largemouth bass (Micropterus salmoides) growth, survival, and reproductive success two and three years following stocking. Four forage species stocked with largemouth bass included bluegills (Lepomis macrochirus), black bullheads (Ictalurus melas), golden shiners (Notemigonus crysoleucas), and fathead minnows (Pimephales promelas). A largemouth bass only stocking strategy was also evaluated. Largemouth bass survival two years after stocking in eastern South Dakota ponds averaged 26.5%. Largemouth bass only and largemouth bass-bluegill combinations exhibited the greatest survival rates (31.6% and 28.8%, respectively), while the largemouth bass-black bullhead combination …
A Turkey Nesting Study In Gregory County, South Dakota, Tara L. Wertz
A Turkey Nesting Study In Gregory County, South Dakota, Tara L. Wertz
Electronic Theses and Dissertations
Nest site vegetation characteristics and selection by wild turkey hens in Gregory County, South Dakota were examined during 1984 and 1985. A total of 23 adult and 12 juvenile hens were monitored during the study. Average adult nesting rate was 42% (31% in 1984 and 54% in 1985). No juveniles nested either year. Nesting success in 1984 and 1985 was 80% and 0%, respectively. Data was collected from 8 woodland and 5 grassland nests. Nest initiation dates ranged from 20 April to 13 June. Nest sites were chosen in locations having overhanging vegetation within 1 m above the nest bowl. …
Influence Of Geomorphological Origin Upon Macroinvertebrate Community Structure In Black Hills Streams, Matthew Lechner
Influence Of Geomorphological Origin Upon Macroinvertebrate Community Structure In Black Hills Streams, Matthew Lechner
Electronic Theses and Dissertations
The purpose of this study was to test a stream classification system proposed for the Black Hills National Forest. Stream physiochemical characteristics and macroinvertebrate community structure were compared among three geomorphically distinct landtype associations in the Black Hills. Stepwise disciminant analysis identified five physiochemical variables, which explained 90% of the variability among landtype associations. The classificatory discriminant procedure correctly reclassified 47 of 52 stations based on the five discriminating invertebrate taxa. Each landtype association was sufficiently different in stream physiochemical characteristics to permit classification. Macroinvertebrates exhibited distributional patterns related to changes in geomorphic structure and stream order, among landtype associations. …
Quantitation And Identification Of Free Sugars From Vascular Plants By Gas-Liquid Chromatography With Mass Spectrometry, Darnell A. Nehlich
Quantitation And Identification Of Free Sugars From Vascular Plants By Gas-Liquid Chromatography With Mass Spectrometry, Darnell A. Nehlich
Electronic Theses and Dissertations
The objectives of this thesis are both the further development of a method for the analysis of free sugars in plant tissues, and also the application of this method to tissues from vascular plants. The applied methodology is often referred to as the PAAN and/or PAKO procedure, an acronym for peracetylated aldononitrile and /or peracetylated ketooxime derivatives. The two-step derivatization procedure (oxime formation followed by peracetylation) will also convert polyols and non-reducing sugars to their corresponding peracetylated compounds. During the past decade there has been extensive application of this procedure, and also development of various aspects of the approach. A …
The Black Hills Aspen : Management Implications From Treatment Results, Steven Peter Riley
The Black Hills Aspen : Management Implications From Treatment Results, Steven Peter Riley
Electronic Theses and Dissertations
In the summer of 1984, 154 quaking aspen stands were sampled throughout the Black Hills National Forest in the Black Hills of South Dakota. The purpose of the study was to develop management directions based on existing treatment results. Some examples of treatments are clearcutting, thinning and removing all aspen while leaving various numbers of conifers on the stand. The purpose of treatment is to rejuvenate the aspen stand. Various data were collected and interpreted in two ways. A multivariate analysis was used to correlate numerous independent variables to the dependent variable, aspen regeneration index (feet of regeneration per acre). …
Impacts Of Large-Scale Gravel Excavations, Precipitation, And Runoff On Groundwater Movement And Quality, Mark L. Perry
Impacts Of Large-Scale Gravel Excavations, Precipitation, And Runoff On Groundwater Movement And Quality, Mark L. Perry
Electronic Theses and Dissertations
Groundwater makes up approximately one-half of the drinking water supply in the United States. Total groundwater withdrawals in 1980 including irrigation, rural, and industrial water usage consisted of almost 90 billion gallons per day am continues to increase. The knowledge of how groundwater moves and how quality changes occur is therefore very important. The Big Sioux River basin of eastern South Dakota contains a large groundwater source, the Big Sioux aquifer. The Big Sioux aquifer is a shallow aquifer consisting of sands and gravels which are good for gravel mining purposes. In the last 20 years, largescale gravel excavations have …
Flow Mechanics Through Stenosis Models, Chung Chin Wha
Flow Mechanics Through Stenosis Models, Chung Chin Wha
Electronic Theses and Dissertations
This study reports the results of an investigation made on flow through a single constriction and through. two and three constrictions placed in series in the flow path. Two types of constrictions having different geometric shapes were investigated. One was a blunt constriction which had a hollowed cylindrical shape and the other was a conical constriction type with a linearly converging and diverging inlet and outlet geometries water and sugar-water solution were used in the experiments. The sugar-water solution had a viscosity equal to the viscosity of blood. Experiments were run using tubes with diameters comparable to the diameters of …
Edward Hofer Of The Lennox Independent, Mary Beth Haan
Edward Hofer Of The Lennox Independent, Mary Beth Haan
Electronic Theses and Dissertations
In 1913 a 14-year-old South Dakota native walked into the local weekly newspaper office and applied for the position of "printer's devil." The teenager was hired. Edward Hofer's career, which has spanned more than 70 years, touched four southeastern South Dakota communities and included the responsibilities of editor/publisher at The Lennox Independent for more than 50 years. The journalist worked through two world wars, the 1930s depression, periods of prosperity, and great changes and advances in technology. The focus of this paper will be on a journalist/businessman supplying a community service--newspaper and job printing--for more than half a century in …
Dynamics And Distribution Of Fishes Occupying A South Dakota Power Plant Cooling Reservoir, Timothy R. Walters
Dynamics And Distribution Of Fishes Occupying A South Dakota Power Plant Cooling Reservoir, Timothy R. Walters
Electronic Theses and Dissertations
Distribution, population number, growth rate, and reproductive activities of walleyes (Stizostedion vitreum vitreum) were studied to evaluate the potential of the Big Stone Power Plant cooling reservoir as a source of walleye brood stock. In addition, dynamics and distribution of bluegill (Lepomis macrochirus) and orangespotted sunfish (L. humilis) were examined. Walleye grew well, reaching a weighted mean total length of 271 mm at formation of annulus I. Survival of walleye was poor, with population estimates of 41 and 43 fish in 1984 and 1985, respectively. Low sample size precluded analysis of distribution, but no consistent preference for an area of …
An Ecological Study Of Mourning Doves In A Cold Desert Ecosystem On The Idaho National Engineering Laboratory, Frank P. Howe
An Ecological Study Of Mourning Doves In A Cold Desert Ecosystem On The Idaho National Engineering Laboratory, Frank P. Howe
Electronic Theses and Dissertations
Mourning dove (Zenaida macroura) use of and movements around man-made ponds, as well as dove nesting ecology, were studied from 1983 through 1985 on the Idaho National Engineering Laboratory (INEL). Relative dove use was higher (P < 0.01) on some ponds than others, and multiple regression revealed a positive association (R 2 = 0.49) between relative use and the geographic isolation of ponds. Two peaks in diurnal pond use were exhibited by doves on the INEL: the mourning peak began around 0800 and lasted until approximately 1300, and the evening peak began at about 2030 and ended by 2150. Seasonal pond use fluctuated slightly through the summer then dropped rapidly in early September. Average and average maximum movements indicated that the 41 mourning doves trapped and fitted with radio-transmitters at the Test Reactor Area (TRA) and the Naval Research Facility (NRF) did not move off of the INEL on a regular basis. The average distance from mourning dove locations to TRA and NRF was <2.0 km, and the average maximum dove location was <3.5 km from either facility. Average (<2.0 km) and average maximum (<3.5 km) distances were also measured from dove locations to watering sites. Doves captured at both TRA and NRF moved, on average, 1.5 km from their nests; the average maximum distance from a dove's location to its nest was 2.8 and 5.4 km for doves caught at TRA and NRF. The average maximum distance between any 2 locations (for the same individual) at both TRA and NRF was <4.0 km. Mourning doves on the INEL are primarily ground nesters. Nesting success averaged 68% per year, with 1.8 fledglings produced per successful nest. Nesting densities averaged 0.02 nests/ha during the study. Three peaks in hatching occurred on the INEL: 1 during the fourth week of June, another during the third week of July, and a third during the first and second weeks of August. Annual production estimates for the INEL ranged from 11,300 to 17,000 doves, based on a model using 2 and 3 nesting attempts per summer. No differences (P > 0.05) were indicated in the percent coverage of shrubs, grasses, forbs, and bare ground, as measured with the line-intercept method, in the 5-m area surrounding dove nests and paired random sites. However, a difference in the percentage of grass cover and bare ground, as measured with a point-frame, was indicated in the 1-m2 (microhabitat) centered on the nest or random site; nest sites contained …
Stocking Density, Strain Performance, And Feeding Method Evaluation Of Cage Reared Rainbow Trout (Salmo Gairdneri) In Eastern South Dakota, Dale B. Allen
Electronic Theses and Dissertations
Methods for cage rearing rainbow trout (Salmo gairdneri) were investigated to assist in the development of a landowner aquaculture program for eastern South Dakota. Rainbow trout when stocked as small fingerlings in the spring did not reach a marketable weight (200 g). The fish did attain a size acceptable to some landowners for personal consumption. Maximum stocking density (fish/m3) was not determined. Densities greater than those used would have been needed to determine the optimum stocking rate. The use of a deeper culture cage (3 m) was justified in this area due to the high water temperatures that were common. …
Pheasant Nesting And Vegetation Development In Dense Nesting Cover Established Under The South Dakota Pheasant Restoration Program, Emmett J. Keyser Iii
Pheasant Nesting And Vegetation Development In Dense Nesting Cover Established Under The South Dakota Pheasant Restoration Program, Emmett J. Keyser Iii
Electronic Theses and Dissertations
Pheasant (Phasianus colchicus) nest use of dense nesting cover (DNC) established under the Pheasant Restoration Program was evaluated in Beadle, Codington, Tripp, and Walworth Counties in South Dakota from 1978 to 1981. Nest densities and success in DNC plots were compared to those found in roadsides and privately owned alfalfa (Medicago sativa) fields, pastures, and small grain fields. Vegetation density and cover development were monitored on DNC plots. Nest densities were generally greatest in DNC plots followed by roadsides and alfalfa fields. Pastures and small grain fields contained the lowest nest densities. No relationship was detected between nest success and …
Lactational And Systemic Responses To The Supplementation Of Protected Methionine In Soybean Meal Diets, Daniel J. Illg
Lactational And Systemic Responses To The Supplementation Of Protected Methionine In Soybean Meal Diets, Daniel J. Illg
Electronic Theses and Dissertations
The high producing dairy cow requires a complex balance of protein and energy. Microbial protein provides a substantial amount of the amino acids absorbed by the small intestine. High production rates cannot be attained with microbial protein as .the sole source of amino acids. The ten classical essential amino acids are required for milk protein synthesis. Increasing the amount of available amino acids to the mammary gland has improved casein production, indicating substrate availability as a controlling factor to milk protein synthesis. A major portion of the nitrogen component of milk is derived from free plasma amino acids. Uptake by …
Inhibition Of Psychrotrophic Bacterial Growth In Refrigerated Milk By Addition Of Carbon Dioxide, Robert Francis Roberts
Inhibition Of Psychrotrophic Bacterial Growth In Refrigerated Milk By Addition Of Carbon Dioxide, Robert Francis Roberts
Electronic Theses and Dissertations
The advent of on-farm refrigerated storage for raw milk in the late 1940's and its subsequent adoption by North American dairyman 'during the next 20 years essentially eliminated spoilage of milk by lactic acid bacteria. However, refrigeration does not prevent growth of all microorganisms present in raw milk (9, 33, 51, 52, 54, 55). Many microorganisms capable of growth at refrigeration temperatures, termed psychrotrophic bacteria, are present as normal contaminants in raw milk supplies. For purposes of clarity, psychrotrophic microorganisms have been defined as microorganisms capable of growth at 7°C or below regardless of their optimum growth temperature (9). Milk …