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Articles 8461 - 8490 of 9775
Full-Text Articles in Entire DC Network
The Conversion Of Char-Nitrogen To No During Fluidized Bed Coalcombustion, Chun-Cheng T. Chan
The Conversion Of Char-Nitrogen To No During Fluidized Bed Coalcombustion, Chun-Cheng T. Chan
Electronic Theses and Dissertations
No abstract provided.
Performance Of Black Liquid Flat Plate Solar Collector Using Double Wall Polycarbonate Sheet, Mahmoud Zarif Ahoubareh
Performance Of Black Liquid Flat Plate Solar Collector Using Double Wall Polycarbonate Sheet, Mahmoud Zarif Ahoubareh
Electronic Theses and Dissertations
No abstract provided.
Experimental Investigation Of A Refrigerator And Heat Pump Usingnatural Zeolite, Maheshwar Bhattacharyya
Experimental Investigation Of A Refrigerator And Heat Pump Usingnatural Zeolite, Maheshwar Bhattacharyya
Electronic Theses and Dissertations
No abstract provided.
Unified Deactivation Theory, James Paul Henley
Unified Deactivation Theory, James Paul Henley
Electronic Theses and Dissertations
No abstract provided.
A Two Dimensional Finite Element Model For Coastal Hydrodynamicsimulation, Francisco Mauricio Toro Botero
A Two Dimensional Finite Element Model For Coastal Hydrodynamicsimulation, Francisco Mauricio Toro Botero
Electronic Theses and Dissertations
No abstract provided.
Finite Element Modeling Of Pollutant Transport In Subsurface Flows / By Yong Tang, Yong Tang
Finite Element Modeling Of Pollutant Transport In Subsurface Flows / By Yong Tang, Yong Tang
Electronic Theses and Dissertations
No abstract provided.
A Ph-Dependent Enzyme Deactivation Study Using Alpha-Amylase / By Carl Randall Snipes, Carl Randall Snipes
A Ph-Dependent Enzyme Deactivation Study Using Alpha-Amylase / By Carl Randall Snipes, Carl Randall Snipes
Electronic Theses and Dissertations
No abstract provided.
The Use Of Newspapers For Teaching Language Arts And Reading, Roy L. Gillis
The Use Of Newspapers For Teaching Language Arts And Reading, Roy L. Gillis
Electronic Theses and Dissertations
The problem of this study was to determine if achievement scores in reading and language arts could be increased for students who participated in the newspapers in education program. Ninety-three seventh grade students were selected for the study; seventy-seven students completed the study, sixteen students were lost due to attrition. Two experimental groups and one control group were selected by random assignment from the seventh grade class at one school. The Metropolitan Achievement Test was administered to all students as a pretest. After completion of the experimental treatment in two successive twelve week periods, the Metropolitan Instructional Test for reading …
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 …
Correlation Of Soil Moisture With Soil Surface Temperature Obtained By Thermography, Daniel Paul Roesler
Correlation Of Soil Moisture With Soil Surface Temperature Obtained By Thermography, Daniel Paul Roesler
Electronic Theses and Dissertations
Since the atmosphere attenuates the radiation emitted by the earth, the actual surface temperature is difficult to measure accurately from satellite heights. However, the temperature difference between two locations on the earth can be measured to a better approximation if the atmosphere attenuates the radiation equally over both surfaces. Thus, the temperature difference between two locations is more accessible than the actual surface temperature of each surface. If surface temperature difference does correlate to soil moisture difference, then relative moisture content can be calculated. Consequently, if a reference moisture is available for one location, the moisture content of the soil …
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 …
Rainbow Trout Cage Culture And Benthic Production In East-Central South Dakota Dugouts, Glenn David Schuler
Rainbow Trout Cage Culture And Benthic Production In East-Central South Dakota Dugouts, Glenn David Schuler
Electronic Theses and Dissertations
Forty-five cages, encompassing 1.0 m3 of water, distributed between three dugout ponds, were stocked with rainbow trout (Salmo gairdneri) fingerlings to determine the feasibility of raising annual fish crops. Growth rates were compared between feeding rate (0, 3, and 5% body weight/day [bwt/day]) and stocking rate (35, 52, and 70 fish/cage). Growth was significantly (P ≤0.05) greater at feeding rates of 3 and 5% bwt/day than 0% bwt/day. The fish fed 0% bwt/day decreased in mean weight by 0.7 g; the weight gain for the 3 and 5% bwt/day feeding rates were 47.2 and 45.2g, respectively. Significant differences (P ≤ …
Love In Major Novels Of Carson Mccullers, Lynn Margaret Butterbrodt
Love In Major Novels Of Carson Mccullers, Lynn Margaret Butterbrodt
Electronic Theses and Dissertations
Mrs. McCullers was not a prolific writer; this was largely due to the fact that she was hindered throughout much of her life by serious illnesses. When she was fifteen, doctors misdiagnosed rheumatic fever as "pneumonia with complications.” Her heart was severely damaged by this illness; consequently, she suffered strokes which resulted in blindness in one eye, complete paralysis of her left side, and complications therefrom. Her final stroke in 1967 left her comatose for forty-seven days until her death on September 29, 1967, at age fifty. Her doctors believed that had her early illness been correctly diagnosed, her lifestyle …
Energy Conservation Potential At The Brookings Wastewater Treatment Facilities, Barry Delano Johnson
Energy Conservation Potential At The Brookings Wastewater Treatment Facilities, Barry Delano Johnson
Electronic Theses and Dissertations
The past years have shown drastic changes in energy costs, largely the changes have been for the worse in the public sector. From 1970 to 1980, the price for one barrel of crude oil rose from $3.15 to $33.50, a 1060% increase. The prices of the various energy sources are shown in Table 1. The result of the increasing energy costs is improved management by energy consumers as well as energy conservation measures throughout the United States. The design of energy efficient units in wastewater treatment plants has been overlooked in the past. As a result of this neglection, the …
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 …
Patient Demand For Nursing Home Care, Kenneth Ray Spear
Patient Demand For Nursing Home Care, Kenneth Ray Spear
Electronic Theses and Dissertations
A great deal of attention has been devoted in recent years to the rising costs of health care and to the resulting pressures upon private and public budgets. Likewise, much attention has been focused on the economic well-being of the increasing number of older citizens. Surprisingly, the tools of economics have been infrequently applied to the nursing home industry, which is a growing segment of the health care sector that now provides services to over one million elderly persons annually (U.S., Department of Health and Human Services, 1981). Since economics is concerned with scarce resources and their efficient allocation among …
The Use Of Academic Performance As A Predictor Of Success Of The National Council Licensing Examination, Patricia O. Dardis
The Use Of Academic Performance As A Predictor Of Success Of The National Council Licensing Examination, Patricia O. Dardis
Electronic Theses and Dissertations
The purpose of this study was to determine the relationship between a baccalaureate nursing student's academic performance and scores received on the National Licensing Examination for Registered Nurses (NCLEX-RN); and to develop an equation to predict NCLEX-RN scores.
The sample consisted of 25 generic students who graduated in 1982 and 1983 from a small private baccalaureate liberal arts college located in the Midwest. An Ex Post Facto research design, using twenty independent variables that relate to academic performance (ACT, CPA, and NLN scores), and one dependent variable (NCLEX-RN), was utilized. Statistical analysis using Pearson's - r and Multiple Regression Analysis …
South Dakota Beef Producer Marketing Alternatives, Larry B. Swain
South Dakota Beef Producer Marketing Alternatives, Larry B. Swain
Electronic Theses and Dissertations
The general objective of the research presented in this thesis was to determine if differences in prices exist among several marketing alternatives available to beef producers. Beef producers are divided into two categories; feeders of beef for slaughter, and producers of feeder claves. The marketing alternatives analyzed are terminal market, direct buyers, auction sale barns and futures market. Specific objectives were: 1. To collect and analyze price data for slaughter cattle from the Sioux Falls terminal market, direct buyers, and futures contracts for a ten year period, 1973-1982, and determine if price differences existed between the three alternatives. 2. To …
Chromatographic Study Of Gas-Liquid And Gas-Solid Phase Equilibria, Monica Leah Bell
Chromatographic Study Of Gas-Liquid And Gas-Solid Phase Equilibria, Monica Leah Bell
Electronic Theses and Dissertations
No abstract provided.
Small Mammals In Prairie Wetlands: Habitat Use And The Effects Of Wetland Modifications, Grey W. Pendleton
Small Mammals In Prairie Wetlands: Habitat Use And The Effects Of Wetland Modifications, Grey W. Pendleton
Electronic Theses and Dissertations
Although well documented for other habitat types, small mammal habitat use patterns in prairie wetlands are poorly understood. The distribution of the mammal fauna of South Dakota is also not well known. Because of the lack of information in these areas, evaluation of the impacts of wetland modifications on the resident mammal community is not possible. The objectives of this study were (1) to document the species composition and abundance of small mammal communities inhabiting prairie wetland basins, (2) to determine the effects of small scale habitat modification on small mammals, (3) and to explain local species distribution patterns using …
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 …
Intensive Culture Of Largemouth Bass And Walleye Fry In Experimental Systems, Gerald A. Wickstrom
Intensive Culture Of Largemouth Bass And Walleye Fry In Experimental Systems, Gerald A. Wickstrom
Electronic Theses and Dissertations
Six genera of invertebrates were made available to largemouth bass (Micropterus salmoides) fry for 25 days. Brachionus spp. was selected for during both day and night (1100 and 2300 h) for the first seven days. Cyclops vemalis was selected on days 1 - 14; it was selected for more during the day for days 1 - 7. Daphnia pulex and D. magna were selected for during days 15 - 25. As the fry grew during the study they ate significantly (P < 0.05) larger D. pulex and D. magna. Moina brachiata was not selected for; it was eaten throughout the study in approximately the same proportion as available. Diaptomus spp. And Ceanestheriella setosa were not eaten. The fry increased in mean length from 6.5 mm on day 1 to 29.8 mm on day 25 of the study. Mean daily length increase was 0.93 mm. Newly hatched walleye (Stizostedion vitreum vitreum) fry were intensively cultured on a diet of live zooplankton under three conditions for 48 days. The fry were reared in tanks under constant illumination (375 lux), in tanks under reduced illumination (105 lux), and in tanks which contained visual interceptors (400 lux). Mean survival of walleyes was 14.0% in tanks under constant illumination, 11.6% in tanks under reduced illumination, and 4.7% in tanks which contained visual interceptors. Mean unaccountable mortality of walleyes was 21.8% in constant illumination tanks, 35.7% in reduced illumination tanks, and 27.4% in tanks with visual interceptors. The fry increased in mean length from 8.6 mm at the start of the study to 36.3 mm (0.76 mm/day) in constant illumination tanks, 36.6 mm (0.76 mm/day) in reduced illumination tanks, and 33.7 mm (0.70 mm/day) in tanks with visual interceptors after 48 days of intensive culture.
Food Selectivity Of Bluegill And Green Sunfish Fry, Aaron Barkoh
Food Selectivity Of Bluegill And Green Sunfish Fry, Aaron Barkoh
Electronic Theses and Dissertations
Four genera of zooplankton and cladoceran egg cases, collected from a municipal sewage lagoon, were made available as food to green sunfish (Lepomis cyanellus) and bluegill (Lepomis macrochirus) fry, to examine their food selectivity. Green sunfish and bluegill fry ranged in size from 8.5-11.0 mm and 8.0-10.5 mm at stocking and were reared for 31 and 30 days, respectively. The gut contents of 1488 green sunfish and 1440 bluegill fry, representing day and night samples were examined. Diet composition was evaluated using the linear food selection index. Both green sunfish and bluegill fry selected for Cvclops vernalis and consistently selected …
An Economic Valuation Of South Dakota Wetlands As A Recreation Resource For Resident Hunters, Craig W. Johnson
An Economic Valuation Of South Dakota Wetlands As A Recreation Resource For Resident Hunters, Craig W. Johnson
Electronic Theses and Dissertations
In spite of efforts to conserve wetlands, intensified agriculture, water projects, and urban development annually diminish the quantity and quality of wetland resources (Weller 1981). Leitch and Danielson (1979) noted that when the discounted value of the returns to drainage exceed drainage costs there is an economic incentive to drain. If present drainage rates continue, Weller (1981) estimated that most wetlands will disappear by the year 2140. Research has only recently focused attention on the need to estimate the public value of wetland benefits and the social costs of drainage (Leitch and Danielson 1979). The disparity between private and social …
Information Needs And Sources Of The South Dakota Horticulture Industry, Iris (Friedrichsen) Thoreson
Information Needs And Sources Of The South Dakota Horticulture Industry, Iris (Friedrichsen) Thoreson
Electronic Theses and Dissertations
Information is needed by horticulturists in areas such as chemical use and application, plant diseases and insects, cultural practices, and marketing techniques. Horticulturists can use a variety of sources to get the information they need. They can use printed material, radio or television, and personal sources. The individuals or groups wanting to communicate with horticulturists need to be aware of the kinds of information needed by the horticulturists and the sources used by them. A computer search of current literature disclosed limited findings on the information gathering processes used by commercial horticulturists. However, researchers have studied information gathering processes in …
Angler Harvest Survey Of Lake Francis Case, South Dakota, Lawrence M. Miller
Angler Harvest Survey Of Lake Francis Case, South Dakota, Lawrence M. Miller
Electronic Theses and Dissertations
An angler harvest survey, consisting of two independent surveys, was conducted on Lake Francis Case, South Dakota, from May through October 1981, and April through October 1982. An aerial angler count was used to estimate angle pressure, and an angler interview survey was used to estimate catch rate. In 1981, a section of Lake Francis Case in the vicinity of the Gregory County Pump Storage Project (Zone 2) was surveyed. IN 1982, the survey was expanded to include the entire reservoir (additional Zones 1 and 3). Estimated fishing pressure for Zone 2 in 1981 was 188,631 angler-hours and in 1982 …
Use Of Eastern South Dakota Shelterbelts By Nesting Birds Of Prey, Scott E. Norelius
Use Of Eastern South Dakota Shelterbelts By Nesting Birds Of Prey, Scott E. Norelius
Electronic Theses and Dissertations
This study was conducted in 1979 and 1980 to determine abundance, productivity, food habits, and ranges of raptors utilizing shelterbelts were in a 78 km² Brookings County study area. The shelterbelts were heterogeneous stands of trees and shrubsplanted in linear rows. Major tree species included elm (Ulmus spp.), green ash (Fraxinus pennsylvanica), cottonwood (Populus deltoids), Russian olive (Elaeagnus angustifolia), and eastern red cedar (Juniperus scopulorum). Major shrub species included honeysuckle (Lonicera tatarica) and lilac (Syringa vulgaris). Ninety-eight raptors were observed on the study area over the 2 breeding seasons investigated (1979-1980). Species observed were the American kestrel (Falco sparverius), Swainson’s …
A Numerical Study Of The Natural Resonances For An Infinitely Long Perfectly Conducting Strip, Shian-Uei Hwu
A Numerical Study Of The Natural Resonances For An Infinitely Long Perfectly Conducting Strip, Shian-Uei Hwu
Electronic Theses and Dissertations
No abstract provided.