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Articles 13291 - 13320 of 14691
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Suppression Of S-Responding In Stimulus Matching : A Comparison Of Extinction And Punishment By Precurrent Timeout, Raymond Talmadge Case
Suppression Of S-Responding In Stimulus Matching : A Comparison Of Extinction And Punishment By Precurrent Timeout, Raymond Talmadge Case
Electronic Theses and Dissertations
No abstract provided.
The Effect Of The Race Of The Interviewer On A Southern Community's Responses To The Demands Of Negro Students, Jerry M. Presley
The Effect Of The Race Of The Interviewer On A Southern Community's Responses To The Demands Of Negro Students, Jerry M. Presley
Electronic Theses and Dissertations
No abstract provided.
Temperature And Concentration Dependence Of The N,N'-Diphenylformamidine And N,N'-Diphenylacetamidine And Related Compounds As Shown By Infrared Spectroscopy, Edward Mcsherry Williams
Temperature And Concentration Dependence Of The N,N'-Diphenylformamidine And N,N'-Diphenylacetamidine And Related Compounds As Shown By Infrared Spectroscopy, Edward Mcsherry Williams
Electronic Theses and Dissertations
No abstract provided.
The Pre-Court Career Of John Marshall Harlan., Thomas L. Owen
The Pre-Court Career Of John Marshall Harlan., Thomas L. Owen
Electronic Theses and Dissertations
The thesis deals with the political career of John Marshall Harlan prior to his appointment in 1877 as an associate justice of the United States Supreme Court. Throughout the majority of those twenty-three active years in Kentucky politics, Harlan was an adamant defender of the slave system, and despite the fact that he had been a strong Unionist during the Civil War, he resisted emancipation of the slaves and opposed every effort to gain civil rights for the blacks once they were freed. When Harlan became a Republican in 1868, he hurriedly reversed himself, and became a consistent advocate of …
Human Olfaction : A Study Of Its Significance As A Variable In Social Interaction/ By Albert Alexander Teel, Albert Alexander Teel
Human Olfaction : A Study Of Its Significance As A Variable In Social Interaction/ By Albert Alexander Teel, Albert Alexander Teel
Electronic Theses and Dissertations
No abstract provided.
Effect Of Ductility On Initiation And Spread Of Fracture In Solids, Tien Yu Hsieh
Effect Of Ductility On Initiation And Spread Of Fracture In Solids, Tien Yu Hsieh
Electronic Theses and Dissertations
The pioneer A. A. Griffith (1921), led by Inglis' idea (1913) of stress distribution around an elliptical void, set up the fundamental theory of rupture and flow in solids for the contemporary scientists in the field of fracture mechanics. Today his theory is the well known Griffith fracture criterion extensively used in investigation and explanation of fracture phenomena. Two of the recent researchers who contributed substan-tially to the field of fracture mechanics are I. N. Sneddon (1946) and R. Sack (1948). They have both derived expressions for the critical stress around a three dimensional penny-shaped crack. In addition, Sneddon found …
Effect Of Rhythmical Disturbances On Repetitive Assembly Work, Ranganatha Hemmige
Effect Of Rhythmical Disturbances On Repetitive Assembly Work, Ranganatha Hemmige
Electronic Theses and Dissertations
The field of industrial engineering has been traditionally based on the desire to produce more goods for less money. This goal has been accomplished by a variety of methods, including improved methods, monetary incentives, and nonmonetary incentives. In the modern industry all of these may be used. Studies to isolate the effects-of such types of incentives frequently, although not exclusively, have been conducted on highly repetitive tasks. This occurs for a number of reasons: 1. The simple task reduces the variability of the output both in quality and quantity. 2. Any given number of cycles will take less time since …
The Influence Of Sodium Phenobarbital On The Hepatic Adenosine Triphosphatase Activity And The Development Of This Enzyme In The Rat, Gerald H. Mettler
The Influence Of Sodium Phenobarbital On The Hepatic Adenosine Triphosphatase Activity And The Development Of This Enzyme In The Rat, Gerald H. Mettler
Electronic Theses and Dissertations
The purpose of this study was two-fold: {A) To obtain information concerning the influence of sodium phenobarbital on the hepatic microsomal enzyme system which reduces adenosine triphosphate in adult male and female rats; (B) To measure the development of hepatic adenosine triphosphatase activity of newborn and infant rats. Intraperitoneal administration of 30 to 150 mgm./Kq. of sodium phenobarbital for three to five days to adult male and female rats did not increase adenosine triphosphatase activity. These findings are rather pertinent since many enzyme systems are stimulated by much lower dosage levels of enzyme inducers, such as sodium Phenobarbital, over a …
Mathematical Modelling Of A First Order Transducer, Vijaykumar S. Monie
Mathematical Modelling Of A First Order Transducer, Vijaykumar S. Monie
Electronic Theses and Dissertations
First chapter lays the ground work for this research paper. The problem is posed immediately, enabling the reader to gain a better appreciation of the material that follows. The next article explains the thought process that motivated this problem. This is followed by reviewing the available. literature in the field and on which the author has relied quite extensively. The chapter concludes by explaining the more common terminology which will be used frequently throughout the dissertation. Given a configuration of linear, passive network elements, termed filter, how faithful a reproduction of the input process is the process at the output …
Reliability Study Of A Modified Los Angeles Rattler Test, Joe H. Smith
Reliability Study Of A Modified Los Angeles Rattler Test, Joe H. Smith
Electronic Theses and Dissertations
The ever constant demand for more and better roads and concrete structures has forced the engineer to seek construction materials with better physical properties. Because of this demand, our nation's once vast supply of high quality, easily accessible natural resources is becoming depleted. One such natural resource is mineral aggregates. These mineral aggregates may be classified as the smaller rocks composed of one or more minerals. The money expended for the procurement and placement of mineral aggregates for highway use represents approximately one-fourth of the total highway cost. Because of this large amount of money spent annually for mineral aggregates, …
Signal Attenuation In V.H.F. Biotelemetry, John Schmelzer
Signal Attenuation In V.H.F. Biotelemetry, John Schmelzer
Electronic Theses and Dissertations
In this paper, the change in loop resistance is examined when the loop is placed at the center of a spherical air cavity which is in turn surrounded by a sphere of physiological saline solution, as shown. The functional dependence of the magnitude of the dissipation resistance on the cavity radius will be studied. The validity of introducing a dissipation resistance will be experimentally tested by immersing a loop in a physiological saline solution and directly measuring the change in resistance with an r.f. bridge. Once the increase in resistance is established, the resultant reduction in radiated power will be …
Characteristics Of Low-Income Families In The Head Start Program In Three Eastern South Dakota Counties, Christopher Lee Smith
Characteristics Of Low-Income Families In The Head Start Program In Three Eastern South Dakota Counties, Christopher Lee Smith
Electronic Theses and Dissertations
Little has been published which deals specifically with families in the Head Start program. Therefore, it would seem most appropriate to ask: What characteristics do Head Start families possess; in what way, if any, do these characteristics differ from those characteristics which are frequently attributed to the "poverty type" family; and, what are the Head Start parents impressions of the Head Start program. Objective 1. To determine the extent to which a sample of Head Start families possesses certain social and demographic characteristics which have been cited as common among families participating in the Head Start program, or among poverty …
The Preparation Of Some Molybdenum And Tungsten Complexes, Linda Fay Bowden
The Preparation Of Some Molybdenum And Tungsten Complexes, Linda Fay Bowden
Electronic Theses and Dissertations
The original objective of the research was to compare the reactions of MoOCl3 [(C6H5)3P]2 and ReOCl3[(C6H5)3P]2. In particular a study of the molybdenum-oxygen moiety and the replacement of the chloride ion trans to the oxygen with an alkoxy group. These reactions were to be conducted in a sealed tube or unreactive solvent. In an attempt to simplify the synthesis of MoOCl3 [(C6H5)3P]2 , the reaction leading to the formation of ReOCl3[(C6H5)3P]2 was investigated with molybdenum compounds. Unexpected results led to extensive study of the reaction with molybdenum and tungsten. While this work was underway, synthesis of triphenylphosphonium salts and triphenylphosphine …
An Eye-Movement Analysis Of Five Ink Colors Printed On Yellow Stock, Robert Charles Clappsy
An Eye-Movement Analysis Of Five Ink Colors Printed On Yellow Stock, Robert Charles Clappsy
Electronic Theses and Dissertations
The use of color combinations of print and paper by commercial printers has increased steadily since 1930. The relation of color-of-print to color-of-background is an important factor to be considered in printing because color does effect legibility. The increased use of color emphasizes the need for scientific knowledge concerning the effect on legibility of various color combinations of print and background. Such scientific knowledge demands relevant research in many areas of color printing. This study will try to determine the effects on eye-movements of various ink colors printed on a controlled yellow stock. This information would be useful to printers …
A History Of The Speech Association Of South Dakota, Illona M. Clark
A History Of The Speech Association Of South Dakota, Illona M. Clark
Electronic Theses and Dissertations
For a number of years, the Speech Association of South Dakota has served as the vehicle for gathering together professionals in the field for the purpose of promoting and improving speech in South Dakota. The Speech Association of South Dakota was earlier named the South Dakota Speech Teachers’ Association. By reorganization in the spring of 1961, it came to represent, as defined in the constitution, “a confederation of the existing speech associations in the state.” The organizational members of this Association included South Dakota High School Speech Association, the South Dakota Intercollegiate Forensic Association, the South Dakota Speech and Hearing …
The Primary Structure Of Selected Peptides From Chymotryptic Digests Of Nifungin, Burton D. Cardwell
The Primary Structure Of Selected Peptides From Chymotryptic Digests Of Nifungin, Burton D. Cardwell
Electronic Theses and Dissertations
Nifungin, an antifungal peptide produced by Aspergillus giganteus, was studied and partially characterized. The amino acid composition of the antifungal peptide was investigated , and eighty-seven percent of the peptide constituents were identified. The presence of free –SH groups in the peptide was studies by spectrophototmetric titration of the peptide with p-hydroroxymercuribenzoate. Performic acid oxidation was used to disrupt the disulfide bridges present in the molecule, and subsequent enzymatic digestion of the oxidized peptide was accomplished with alpha chymotrypsin. Chromatographic separation of the digestion mixture produced eleven chymotryptic peptides. Six of these peptides were selected for amino acid sequence analysis …
Replacement Of Protein With Amino Acids In Diets For Laying Hens And Turkey Poults, Edwin J. Novacek
Replacement Of Protein With Amino Acids In Diets For Laying Hens And Turkey Poults, Edwin J. Novacek
Electronic Theses and Dissertations
Low protein diets were formulated for experiments with laying hens and turkey poults. The diets were supplemented with equal amounts of protein and different feedstuffs while maintaining equal calculated levels of selected amino acids. Single trails were also reported for factorially applied amino acid supplements to turkey starter and cage-layer diets. The three-year studies indicated that a typical corn-soy layer diet diluted with glucose monohydrate to 9.4 percent protein was deficient in methionine, lysine and tryptophan. Attempts to further improve the rate of egg production by additional supplements of arginine, isoleucine, valine, or diammonium citrate were not successful. The low …
Enhancement Of Foliar Penetration And Herbicide Activity By Oils, James F. Peacock
Enhancement Of Foliar Penetration And Herbicide Activity By Oils, James F. Peacock
Electronic Theses and Dissertations
To learn more about oils and how they affect post-emergence spray applications of herbicides, two major problem areas were investigated. The first dealt with specific physical and chemical properties of oils as they are associated with phytotoxicity and enhancement of herbicidal activity, while the second dealt with foliar penetration as a possible mechanism of enhancement. Simple correlation and multiple regression analyses were conducted for specific properties of mineral oils applied to green foxtail (Setaria verdis (L.) Beauv.) and grain sorghum (Sorghwn bicolor (L.) Moench. 'Northrup King 133') as 5% oil in water emulsions with and without 2.24 kg/ha of atrazine …
An Evaluation Of Frozen Precooked Breaded Beef Patties As To Flavor Acceptability Related To The Handling Procedures And Lossesdue To Reheating Methods / By Mary Sue Pylant Tettleton, Mary Sue Pylant Tettleton
An Evaluation Of Frozen Precooked Breaded Beef Patties As To Flavor Acceptability Related To The Handling Procedures And Lossesdue To Reheating Methods / By Mary Sue Pylant Tettleton, Mary Sue Pylant Tettleton
Electronic Theses and Dissertations
No abstract provided.
An Adaptive Redundancy Reduction Technique, Seon J. Chung
An Adaptive Redundancy Reduction Technique, Seon J. Chung
Electronic Theses and Dissertations
In telemetry systems, the limited power available from the RF transmitter imposes a constraint on the data transmission rate. For example, a spacecraft’s ability to communicate with a ground receiving station decreases with the square of the distance, and electrical power to operate the system increases with the data transmission rate. To solve this problem, considerable attention has been devoted toward improving the efficiency of telemetry systems by selecting advantageous coding, modulation and reconstruction techniques. One technique which is used to achieve this goal is to design a telemetry system which transmits only the significant information contained in the source …
Studies Of High Level Copper Supplementation To Rations For Growing-Finishing Swine, Larry Wayne De Goey
Studies Of High Level Copper Supplementation To Rations For Growing-Finishing Swine, Larry Wayne De Goey
Electronic Theses and Dissertations
Scientists are continually searching for new compounds, as well as optimum levels and combinations of existing compounds, in order to improve gain and feed efficiency of pigs fed common swine rations without adversely affecting the quality of the pork produced. Feed efficiency is of particular importance to a profitable swine enterprise since feed costs make up approximately 65% of total production costs. During the last two decades there has been considerable interest in the ability of copper to increase gains and feed efficiency when fed at high levels in swine rations. Several reports have indicated that copper is an effective …
A Comparison Of The Effect Of Overt And Covert Responses On The Retention Of Programed Material, Gary Merriam
A Comparison Of The Effect Of Overt And Covert Responses On The Retention Of Programed Material, Gary Merriam
Electronic Theses and Dissertations
It is the purpose of this study to help in the resolution of some of these questions by determining if the type of response made to programed material has any effect on the retention of the material. If, as was mentioned earlier, learning is the result of stimuli transmitted through the senses to the brain, it seems logical that the more senses involved in transmitting the stimuli to the brain the more effective and efficient the learning process will be. It is the hypothesis of this study that a person responding to programed material by having to think what the …
Light And Color Responses Of Apterous Cereal Aphids, Eugene Leslie Miller
Light And Color Responses Of Apterous Cereal Aphids, Eugene Leslie Miller
Electronic Theses and Dissertations
The four species of cereal aphids used in this study were the English grain aphid, Macrosiphum avenae (Fab.), the oat bird-cherry aphid, Rhopalosiphum padi, the greenbug, Schizaphis graminum (Rondani), and the corn leaf aphid, Rhopalosiphum maidis (Fitch). Aphid colonies were maintained on barley CI 666 in the greenhouse. Only active adult apterae from the stock colonies were counted into the cages. All tests were run in Percival or Sherer controlled environment chambers operating from 2O°C to 27°C, and with a photoperiod of 16 hours of light (3,000 Ft-c supplied by fluorescent and incandescent bulbs). The complex synthetic diet used in …
Effect Of Days Open On Lactation Production, Roger L. Ripley
Effect Of Days Open On Lactation Production, Roger L. Ripley
Electronic Theses and Dissertations
Accurate evaluation of dairy production records is essential if dairymen are to establish and maintain profitable dairy herds and efficient culling programs. Improper record evaluation may result in. saving breeding stock that otherwise might be eliminated. Many factors may influence the validity of individual production records. Adjustment factors, currently in use by the United States Department of Agriculture (USDA) for sire and cow evaluations, are generally accepted as removing the majority of these influences. Consequently, these factors are invaluable to practical dairymen. The adjustment factors, suggested by McDaniel, et al. (24) in 1967, take into account the geographical location, season …
Effects Of Orally Administered Allopurinol (Hyroxyprazolo 3,4-D Pyrimidine) On Uric Acid, Selected Blood Lipid And Hemogram Parameters In Rabbits, Gary A. Thibodeau
Effects Of Orally Administered Allopurinol (Hyroxyprazolo 3,4-D Pyrimidine) On Uric Acid, Selected Blood Lipid And Hemogram Parameters In Rabbits, Gary A. Thibodeau
Electronic Theses and Dissertations
Gout is one of the earliest disease entities to be described in medical writings. Hippocrates noted familial distribution patterns and described its classic symptomatology in the 5th century B.C. Empirical treatment employing colchicine was advocated by Alexander of Tralles in the 5th century A.D. A better understanding of the complex association between clinical manifestations of gout and uric acid, carbohydrate and lipid metabolism has made rational treatment possible only very recently. Ample experimental and clinical data now available show a definite association between disorders of purine metabolism resulting in hyperuricemia and frequent concomitant hyperlipidemia. A high incidence of both …
Ecology Of The Black-Footed Ferret And The Black-Tailed Prairie Dog, Robert G. Sheets
Ecology Of The Black-Footed Ferret And The Black-Tailed Prairie Dog, Robert G. Sheets
Electronic Theses and Dissertations
Research involving the black-footed ferret (Mustela nigripes) and black-tailed prairie dog (Cynomys ludovicianus) was conducted during 1968 and 1969. Eighteen prairie dog burrows were excavated in 1968 and 1969. Burrow systems ranged from 13 to 109 feet long and 3 to 14 feet deep. Fifteen of the burrows exhibited dome-shaped entrances leading to a gradually descending passageway which made an abrupt vertical ascent to a crater-shaped entrance. Nest chambers were found in 6 burrows. Earthen plugs created by prairie dogs in burrows after ferret departure ranged from 9 to 33 feet long. Eighty-two ferret scats were recovered. Animal remains found …
Ochratoxin In Poultry Feeds : Toxic Effects On Hens, Harlal Choudhury
Ochratoxin In Poultry Feeds : Toxic Effects On Hens, Harlal Choudhury
Electronic Theses and Dissertations
Ochratoxin is a toxin produced by fungus Aspergillus ochraceus Wilh. This is one of the poisonous metabolites, like aflatoxin, which when ingested by livestock, poultry, and human beings could produce toxigenic effects—so-called mycotoxicoses. The fungus A. ochraceus is widely distributed in nature and often found in soil and vegetation. Scientists, while searching for causative agents of certain diseases not of bacterial, viral, or nutritional origin, conducted a series of experiments a few decades ago using different species of fungi grown on food and feedstuffs. Toxic effects concurrent with antimicrobial activity of certain species of molds created problems in separating one …
Acceptable Regions For Approximations In Quality Control, Du Hung-Ching
Acceptable Regions For Approximations In Quality Control, Du Hung-Ching
Electronic Theses and Dissertations
The manufacturer's inspection of his own product or the product received from outside vender, serves two purposes: 1. To provide a basis for action with regard to the materials and goods at hand. For instance; to-decide whether the particular article or group of articles should be utilized, or whether some alternative disposition should be made, such as: inspected further, sorted, repaired, reworked or scrapped. 2. To provide a basis for action with regard to the future production process. For instance; to decide whether the process should. be left alone, or whether action taken to find and eliminate disturbing causes.
Infiltration Lagoons As A Tertiary Treatment Device, Terry L. Druyvestein
Infiltration Lagoons As A Tertiary Treatment Device, Terry L. Druyvestein
Electronic Theses and Dissertations
As the United States continues to grow and expand industrially, increased mechanization and shorter work weeks will result in a populace which will expect to enjoy increasing amounts of leisure time. Part of this leisure time will be used to participate in outdoor recreation activities, the result being an increased demand on lakes and streams. Maintaining these waters in a suitable condition for recreation and other beneficial uses has become the concern of most Americans. The Water Quality Act of 1965 and the subsequent state water quality standards are ample proof of the concern given to the control of water …
A Chromosome Study Of Chlorophytum Elatum, Dennis E. Driscoll
A Chromosome Study Of Chlorophytum Elatum, Dennis E. Driscoll
Electronic Theses and Dissertations
The spider plant, Chlorophytum elatum R. Br., a member of the family Liliaceae, is a native of South Africa. It has been propagated almost exclusively by vegetative means and it is now grown widely over the world as an ornamental plant. Many studies by other workers have revealed that with only two exceptions all species in the genus Chlorophytum have somatic chromosome numbers that are multiples of seven, ranging from 14 to 56 (c.f. Darlington and Wiley, 1955). Although the chromosome number of Chlorophytum elatum has ·been reported to be 2N = 28 (Sato, 1942; Baldwin and Speese, 1951) information …