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Articles 9061 - 9090 of 9652
Full-Text Articles in Entire DC Network
Some Aspects Of Literary Criticism And The English Curriculum, Josephine Cleveland
Some Aspects Of Literary Criticism And The English Curriculum, Josephine Cleveland
Electronic Theses and Dissertations
No abstract provided.
A Comparison Of Two Smoking Reduction Treatments Under Conditions Designed To Be Interfering Or Not Interfering With The Smoking Habit., Gary Clive Salk 1944-
A Comparison Of Two Smoking Reduction Treatments Under Conditions Designed To Be Interfering Or Not Interfering With The Smoking Habit., Gary Clive Salk 1944-
Electronic Theses and Dissertations
Thirty smokers were solicited from the Wichita, Kansas community via the newspaper and broadcast media for a stop-smoking project. The volunteers were assigned to one of two treatments: double smoking or a modification of Von Dedenroth's (1964) treatment. Each of these treatments was further divided into two groups. These groups were designed to provide high and low interference with the smoker's habit. No effect was observed for interference and it was observed that the experimental conditions probably did not permit the possibility of more than a small interference effect in either group. However, a significant effect for time and time …
The Effects Of Selected Pesticides On Ten Isolates Of Terrestrial Algae., Martha Scheer Salk 1945-
The Effects Of Selected Pesticides On Ten Isolates Of Terrestrial Algae., Martha Scheer Salk 1945-
Electronic Theses and Dissertations
Ten algal isolates were obtained from soil into axenic culture and placed into defined media containing from 0 to 50 ppm of DDT, 2, 4-D,2,4,5-T, rotenone, or malathion (in two purities, 95 and 99%). For nine of the isolates, growth was measured photometrically every two weeks for a period of two months. Because of the twisted growth form, of the tenth isolate, a visual estimation was used to measure its growth over the same period of time. The results of the experiments in the light were as follows: 1) 2,4-D and 2,4,5-T were generally neutral in their growth effects. However, …
Effect Of Rhenium On Nitrogenase Activity Of Azotobacter Effect Of Rhenium On Nitrogenase Activity Of Azotobacter Vinelandiiinelandii, Stephen L.R. Erdody
Effect Of Rhenium On Nitrogenase Activity Of Azotobacter Effect Of Rhenium On Nitrogenase Activity Of Azotobacter Vinelandiiinelandii, Stephen L.R. Erdody
Electronic Theses and Dissertations
In recent years the biochemical aspects of molybdenum have come under increasing investigation. One phase of the investigation has centered on the function of Mo in nitrogenase enzymes. One way to study the biochemical function of an element with another which may mimic its function. A vanadium containing mitrogenase from Aztobacter vinalaudii has been prepared which displays properties indicative of replacement of the Moo by V. Attempts to prepare an active tungsteu analog have been unsuccessful as W exhibits an inhibitory effect. It has been suggested that rhenium analogs of Mo-nitrogenase rather than V or W, should be more useful …
Salmonella Detection By Coulter Counter Volume Displacement Using Specific Antibody Coated Latex, Gita Chandulal Parikh
Salmonella Detection By Coulter Counter Volume Displacement Using Specific Antibody Coated Latex, Gita Chandulal Parikh
Electronic Theses and Dissertations
The present study was designed to determine whether this Coulter Counter for detection of Salmonella typhimurium cells. The latex particles are coated with a specific antiserum which reacts with the particulate antigen, Salmonella cells. An increase in the volume of latex antibody and Salmonella cells is detected by the Coulter Counter data and a teletype to plot the data shortens the time consumption. This method also has a potential to be completely automated.
The Influence Of Soils And Vegetation On Landsat Spectral Signatures, Gary Dean Lemme
The Influence Of Soils And Vegetation On Landsat Spectral Signatures, Gary Dean Lemme
Electronic Theses and Dissertations
The National Aeronautics and Space Administration (NASA) of the United States government has realized the potential and importance of developing operational agricultural inventorying procedures using satellite data. They are actively carrying on an extensive research program titled: “Large Area Crop Inventory Experiment” better known by the acronym LACIE. One of the many areas being investigated is training set selection. Along these lines, a research project was undertaken during the 9174 growing season with the general objective being to study the influence of soils and vegetation on LANDSAT signatures. The specific objectives of the study were: 1. To investigate the relationships …
Nitrogen Fixation And Other Microbial Activities In Soil On Antelope Range Station, Thomas J. Schneeweis
Nitrogen Fixation And Other Microbial Activities In Soil On Antelope Range Station, Thomas J. Schneeweis
Electronic Theses and Dissertations
This is a study of the symbiotic and non-symbiotic nitrogen fixing organisms on Antelope Range Station. Symbiotic nitrogen fixation is carried out by the native leguminous plants and the bacterial genus Rhizobium. This bacterium causes nodules to form on leguminous plants, and this symbiotic relationship is capable of utilizing gaseous nitrogen as a nitrogen source. Some experimentation was also done on a lichen found throughout the area studies. While speciation was not attempted, the lichen specimens were morphologically similar. These lichens also represented a symbiotic relationship, but in this case a nitrogen fixing blue-green algae formed a thallus with a …
Effectiveness Of Selected Media For Removal Of Hydrogen Sulfide, Robert C. Renner
Effectiveness Of Selected Media For Removal Of Hydrogen Sulfide, Robert C. Renner
Electronic Theses and Dissertations
The studies described herein represent a preliminary effort toward developing an effective and economic method for controlling odors from anaerobic lagoons. The objectives of this investigation were: 1. To determine experimentally the effectiveness of various materials in reducing odors resulting from anaerobic treatment of wastewater. 2. To provide a recommendation concerning the thickness of the most effective materials for use as a cover to reduce odors from anaerobic lagoons.
The Infiltration Of A Lagoon Effluent For Final Waste Treatment, William B. Sherman
The Infiltration Of A Lagoon Effluent For Final Waste Treatment, William B. Sherman
Electronic Theses and Dissertations
The study and literature herein described was instituted for the purpose of examining the application of the stabilization pond effluent at Madison, South Dakota, to a soil type present in that area. The literature emphasized the importance of investigating the soil and water at each location because of variations witnessed in nearly every land application system that has been studied. With much assistance from officials of Madison, South Dakota, a lysimeter study was performed at the Madison lagoon by passing stabilization pond effluent through local soil,, collecting the resultant water to measure the rate of infiltration and analyzing the resultant …
Nitrogen Fixation By And Isolation Of Rhizobium Species From Native Legumes From A Tall Grass Prairie In South Dakota, Richard S. Steece
Nitrogen Fixation By And Isolation Of Rhizobium Species From Native Legumes From A Tall Grass Prairie In South Dakota, Richard S. Steece
Electronic Theses and Dissertations
This thesis is concerned primarily with the occurrence of nitrogen fixation in native legumes on burned vs. unburned sections of the tall grass prairie. It is also concerned with the isolation of the root nodule bacteria and their identification as rhizobia. Various other biological data such as plate counts a of soil bacteria and azotobacter plate counts along with the influence of abiotic factors such as temperature, soil moisture and organic matter were determined to see in a relationship could be detected with nitrogen fixation.
Integrated Numerical Simulation Of Drip Irrigation With Subsurface Drainage, James Ray Hoover
Integrated Numerical Simulation Of Drip Irrigation With Subsurface Drainage, James Ray Hoover
Electronic Theses and Dissertations
A numerical method and model were developed to simulate soil moisture during steady-state and transient flow toward a tile drain. Intermittent application of water by drip irrigation and rainfall were simulated by use of finite difference approximation equations. No known analytical solution for these flow situations exists because of the complex mathematics describing unsaturated flow in the soil. The computer model is based on the electrical resistance network analog. The explicit finite difference equations were solved by the successive over-relaxation method for steady-state flow and by iteration for transient soil moisture flow. The computer program for the model consists of …
A Study Of Factors Associated With Outdoor Recreational Participation In South Dakota, James W. Delong
A Study Of Factors Associated With Outdoor Recreational Participation In South Dakota, James W. Delong
Electronic Theses and Dissertations
Participation by South Dakotans in selected areas of outdoor recreation was studied to determine varying extents of participation and associated selected sociodemographic, socialization and attitudinal factors. A statewide random sample of 474 heads-of-households (or their spouses) was selected and interviewed using a pretested schedule. The findings were present in three forms: a descriptive summary, a nonparametric analysis of association and a multivariate analysis. The descriptive analysis revealed fishing, hunting and lakeside camping or picnicking to be the activities participated in most frequently. Conversely, water-skiing, ice fishing and snowmobiling were participated in least. Analysis of association showed that each of the …
Opinions And Sources Of Information And Influence Of South Dakota High School Guidance Counselors Concerning South Dakota Colleges And Universities, Roger A. Christianson
Opinions And Sources Of Information And Influence Of South Dakota High School Guidance Counselors Concerning South Dakota Colleges And Universities, Roger A. Christianson
Electronic Theses and Dissertations
The purpose of this study is to determine the opinions of South Dakota high school guidance counselors with respect to South Dakota colleges and universities, to determine their sources of information about various colleges and universities, and to identify factors which may influence counselors’ opinions of a college or university. Results of this study will: a) contribute to our understanding of the dynamics of information seeking by high school students concerning college choice, and b) serve college and university administrators in their efforts to provide prospective students with better, more effective, information about their institution’s programs and offerings.
Prevalence Of Listeria Monocytogenes In A Bovine Associated Environment, Verne D. Brakke
Prevalence Of Listeria Monocytogenes In A Bovine Associated Environment, Verne D. Brakke
Electronic Theses and Dissertations
Listeria monocytogenes has emerged into the realm of disease causing bacteria as a pathogen of public health importance. Its opportunistic and ubiquitous nature has led to an ever increasing number of case reports implicating this organism in human and animal disease. Following its discovery Listeria has been observed in many countries from the tropics to the arctic (6). In addition to human subjects, Listeria has been found with a very wide host range which includes 37 mammals, 17 fowls, ticks, fish, crustaceans, silage, soil, dust, slaughter house waste, stream water, sewage and mud.
Propagation Of Selected Native Prairie Plants By Leaf Tissue Culture, Bernard Erlyn Ellis
Propagation Of Selected Native Prairie Plants By Leaf Tissue Culture, Bernard Erlyn Ellis
Electronic Theses and Dissertations
Preservation of our native prairie has long been neglected while extensive farming practices have reduced the native prairie to isolated areas of untillable land. These diminishing acres of prairie (Jenkins 1971, Tinker 1971) are our remaining link with the stable environment after man has disrupted the landscape to his advantage. The objective of this investigation was to produce plantlets of selected native prairie plants by leaf tissue culture and to eventually establish them in the field. In doing this it was necessary to study the characteristic of each species in both culture and field behavior. Twenty species were selected for …
Bentonite Or Sodium Bicarbonate In High-Concentrate Lamb Diets, Gerald Bruce Huntington
Bentonite Or Sodium Bicarbonate In High-Concentrate Lamb Diets, Gerald Bruce Huntington
Electronic Theses and Dissertations
A rapid change of ruminants from high-roughage diets, often used in background feeding programs, to high-concentrate diets used in the finishing phase tends to promote various digestive tract disorders. A major change in diets gradually made over a period of 3 to 4 weeks generally allows time for the rumen microflora to become adapted to the new conditions and minimizes digestive problems. However, performance during this period is often unsatisfactory. In the short-term feedlot finishing of ruminants for slaughter, the importance of profitable weight gains during the initial adaptation phase of the feeding period becomes relatively more important. Methods of …
The Response Of The Turbellarian, Cura Foremani, To Iodide, Iodine, And Thyroxin / By Joseph Spencer Young, Joseph Spencer Young
The Response Of The Turbellarian, Cura Foremani, To Iodide, Iodine, And Thyroxin / By Joseph Spencer Young, Joseph Spencer Young
Electronic Theses and Dissertations
No abstract provided.
Effects Of Hydrogen Ion Buffers On Photosynthetic Oxygen Evolution In The Blue-Green Alga, Agmenellum Quadruplicatum, Susan Nancy Bridges
Effects Of Hydrogen Ion Buffers On Photosynthetic Oxygen Evolution In The Blue-Green Alga, Agmenellum Quadruplicatum, Susan Nancy Bridges
Electronic Theses and Dissertations
No abstract provided.
Monumental Forms And Imagery, Stephen Day Cook
Monumental Forms And Imagery, Stephen Day Cook
Electronic Theses and Dissertations
No abstract provided.
An Experimental Production Of An Adaption Of William Faulkner's Uncle Bud And The Three Madams, Michael Eugene Clark
An Experimental Production Of An Adaption Of William Faulkner's Uncle Bud And The Three Madams, Michael Eugene Clark
Electronic Theses and Dissertations
No abstract provided.
The American Rock Musical : A Revolutionary Movement, Marcia Marian Hansen
The American Rock Musical : A Revolutionary Movement, Marcia Marian Hansen
Electronic Theses and Dissertations
No abstract provided.
The Axial Dispersion In Fixed Beds Characterized By A Small Tube, Tom Chu-Shao Hsiang
The Axial Dispersion In Fixed Beds Characterized By A Small Tube, Tom Chu-Shao Hsiang
Electronic Theses and Dissertations
No abstract provided.
Creative Enrichment In The Dramatic Arts For Gifted Junior Highstudents, Maxine Weiner Mooers
Creative Enrichment In The Dramatic Arts For Gifted Junior Highstudents, Maxine Weiner Mooers
Electronic Theses and Dissertations
No abstract provided.
A Numerical Solution Technique For The Truncated Microstrip Transmission Line, Ray-Sun Chang
A Numerical Solution Technique For The Truncated Microstrip Transmission Line, Ray-Sun Chang
Electronic Theses and Dissertations
No abstract provided.
Users Versus Non-Users : Characteristics Of Marijuna Consumption Among University Of Mississippi Freshman, Elizabeth Rice Galloway
Users Versus Non-Users : Characteristics Of Marijuna Consumption Among University Of Mississippi Freshman, Elizabeth Rice Galloway
Electronic Theses and Dissertations
No abstract provided.
A Three-Dimensional Study In Design Through The Use Of Two-Dimensional Transparent Media, Alice Stallworth Lancaster
A Three-Dimensional Study In Design Through The Use Of Two-Dimensional Transparent Media, Alice Stallworth Lancaster
Electronic Theses and Dissertations
No abstract provided.
Sojourn : A Poetic Dramatization Of The Black Experience, James A. Peters
Sojourn : A Poetic Dramatization Of The Black Experience, James A. Peters
Electronic Theses and Dissertations
No abstract provided.
Fragments Of Life : A Creative Visual Project Uniting Thoughts And Feelings / By Barbara Ellen Upchurch, Barbara Ellen Upchurch
Fragments Of Life : A Creative Visual Project Uniting Thoughts And Feelings / By Barbara Ellen Upchurch, Barbara Ellen Upchurch
Electronic Theses and Dissertations
No abstract provided.
Attitudes Toward Mental Health In Pontotoc County, Mississippi, William Max Grisham
Attitudes Toward Mental Health In Pontotoc County, Mississippi, William Max Grisham
Electronic Theses and Dissertations
No abstract provided.
The Legal Development Of Farmer Cooperatives / By William Ewing Scott, William Ewing Scott
The Legal Development Of Farmer Cooperatives / By William Ewing Scott, William Ewing Scott
Electronic Theses and Dissertations
No abstract provided.