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Articles 21031 - 21060 of 22404
Full-Text Articles in Entire DC Network
Systems, Adaptation, And The Business Firm, Jerry Goen
Systems, Adaptation, And The Business Firm, Jerry Goen
Theses and Dissertations
No abstract provided.
Combined Law Enforcement Council Grants: An Empirical Study, Bruce Brenner
Combined Law Enforcement Council Grants: An Empirical Study, Bruce Brenner
Theses and Dissertations
No abstract provided.
High Pressure Liquid Chromatographic Methods For The Separations Of Derivatized Alpha-Keto Acids And Thiamine Phosphate Esters, Bruce Clark Hemming
High Pressure Liquid Chromatographic Methods For The Separations Of Derivatized Alpha-Keto Acids And Thiamine Phosphate Esters, Bruce Clark Hemming
Theses and Dissertations
Improved methods have been developed for separation of a-keto acid derivatives and for thiamine and its phosphate esters. Linear gradient reverse phase chromatography using ion-pair formation provides baseline resolution for a seven-component homologous series of a-keto acid dinitrophenylhydrazones having increasing carbon chain lengths. Branched-chain keto acids can also be separated. Aldehyde derivatives were examined as possible interfering compounds. Peak identification in biological material was confirmed for pyruvate by an enzymic peak shift technique. Monitoring near 365 nm permits low nanogram detection. Preliminary studies of keto acids in biological material illustrate the method's applicability. The same system with slight changes separates …
A Photochemical Study Of S-Triazolo[4,3-B] Pyridazine And 3-Diazo-4-Oxo-3,4-Dihydroquinoline, John Timothy Carlock
A Photochemical Study Of S-Triazolo[4,3-B] Pyridazine And 3-Diazo-4-Oxo-3,4-Dihydroquinoline, John Timothy Carlock
Theses and Dissertations
When subjected to ultraviolet radiation in the presence of an alkene, s-triazolo[4,3-b]pyridazine (STP) undergoes an unusual 3 + 2 photocycloaddition wherein the alkene adds to the 1 and 8 positions of STP with concommitant N4-N5 bond cleavage yielding 5,6-disubstituted-6,7-dihydro-7-methylene (and 7-cyanomethyl)-5H-pyrrolo[1,2-b]-s-triazoles. Amides and esters of indole-3-carboxylic acid have been synthesized by a novel reaction employing the ultraviolet irradiation of 3-diazo-4-oxo-3,4-dihydroquinoline (QDA) in the presence of amines or alcohols respectively. QDA, when irradiated, is postulated to undergo an internal Wolff Rearrangement to Indole-3-ketene which can add any amine or alcohol to form the corresponding amide or ester in modest to good …
The Synthesis Of Novel Macrocyclic Multidentate Compounds From Dioxodioic Acids (1), R. Elliott Asay
The Synthesis Of Novel Macrocyclic Multidentate Compounds From Dioxodioic Acids (1), R. Elliott Asay
Theses and Dissertations
A series of novel macrocyclic multidentate crown compounds have been prepared from a series of dioxodioic acids. The dioxodioic acids were prepared by treating various oligoethylene glycols or amines with maleic, succinic, citraconic, and glutaric anhydrides. The crown compounds were then synthesized from the dioxodioic acid chlorides obtained from the diacids and various oligoethylene glycols or ethylene diamine.
Real-Time Computer Optimized Scanning Potential Coulometry For Multi-Component Trace Analysis, Norman W. Petty
Real-Time Computer Optimized Scanning Potential Coulometry For Multi-Component Trace Analysis, Norman W. Petty
Theses and Dissertations
The instrumentation and methodology for real-time computer controlled scanning potential coulometry for multi-component trace analysis is described. The sensitivity limit was determined to be 10^-8 F for electrochemically reversible constituents. The sensitivity limit could be extended if measures were taken to compensate for the periodic signal found on the electrolysis current. Non-linear least squares curve fitting methods accurately resolved iron-platinum and silver-iron interferences to give accurate determinations for iron and silver. The resolving capability of this method was tested using theoretically generated scanning potential coulograms. The computer resolved sample constituents with a 1 to 100 concentration ratio and a formal …
A Comparison Of The Age And Growth Of Yellow Perch, Perca Flavescens (Mitchill) In Lake Audubon And Lake Sakakawea, North Dakota, 1978, Steven W. Kelsch
A Comparison Of The Age And Growth Of Yellow Perch, Perca Flavescens (Mitchill) In Lake Audubon And Lake Sakakawea, North Dakota, 1978, Steven W. Kelsch
Theses and Dissertations
The age and growth of yellow perch, Perca flavescens (Mitchill), were compared in two lakes which are part of a large Missouri River mainstem reservoir. Forty-five and one hundred and two perch were captured from Lake Sakakawea and Lake Audubon, respectively, by using experimental gill nets and frame fets. Longevity, condition, back- calculated annual growth, and length-weight relationships of the two perch populations were compared.
Studies of length-weight, annual growth, and condition revealed a relatively slow growth rate, reduced longevity, and poor condition in Lake Sakakawea; being on the order of a stunted population. Perch in Lake Audubon lived longer, …
The Development And Standardization Of A Reflective Eye Movement Questionnaire, Barbara Ann Arneson
The Development And Standardization Of A Reflective Eye Movement Questionnaire, Barbara Ann Arneson
Theses and Dissertations
Researchers have reported that when people are asked a question requiring reflection, they frequently look briefly to one side or the other before answering. The direction of this reflective eye movement has been shown to be a reliable individual characteristic and has been related to various physiological, intellectual, and personality characteristics. Recent reflective eye movement research has focused more specifically on the relationship between gaze shift directionality and cerebral hemispheric functioning. Results of these studies suggest that direction of eye movements is related to the cognitive content of the reflective questions. However, inconsistencies seem to exist between what the various …
Administrative Role Perceptions Of North Dakota Elementary School Principals As Related To Five Selected Dimensions Of Administrative Function, Rodney A. Desautel
Administrative Role Perceptions Of North Dakota Elementary School Principals As Related To Five Selected Dimensions Of Administrative Function, Rodney A. Desautel
Theses and Dissertations
Purpose of the Study: The purpose of this study was to determine: (1) the role dimension North Dakota elementary school principals perceive to be the most important in performance of the duties of a principalship; (2) whether North Dakota elementary school principals are functioning in the role dimension they perceive to be most important in performance of the duties of a principalship, (3) the perceived success of performance in each role dimension as judged by North Dakota elementary school principals, (4) what relationships exist between/among certain personality profiles of North Dakota elementary school principals and the perceived importance of and …
The Mammals Of Zion National Park With Emphasis On Ecology And Distribution Of Twelve Species Of Rodents, Paul A. Gardner
The Mammals Of Zion National Park With Emphasis On Ecology And Distribution Of Twelve Species Of Rodents, Paul A. Gardner
Theses and Dissertations
Information concerning the mammals of Zion National Park was needed for management purposes and general information. During the summers of 1975 and 1976, mammals observed throughout the park were recorded and habitat structure was measured for each animal at the immediate observation site. Ordinations based on stepwise discriminant analyses of the data on 12 rodent species were constructed and substantiated by Bray-Curtis analyses. The results showed that amounts of cover and boulders contrasted the habitats of Peromyscus eremicus, P. maniculatus, P. crinitus, P. boylii and P. truei. A second group of species--Eutamias minimus, E. umbrinus, Spermophilus variegatus, Tamiasciurus hudsonicus, Dipodomys …
A Study Of The Attitudes Of Selected Sixth Grade Students Concerning Social Studies, Norman C. Machart
A Study Of The Attitudes Of Selected Sixth Grade Students Concerning Social Studies, Norman C. Machart
Theses and Dissertations
Problem: The problem of this study was to determine the current attitudes held by sixth grade students toward social studies.
Purpose: The purpose of this study was to determine if there were any significant differences between the attitudes of sixth grade students toward social studies and science, spelling, mathematics, reading, and language. An attempt was also made to determine what effect the following factors might have upon sixth grade students' attitudes toward social studies: sex, size of school district, the degree of usage of several instructional strategies and types of materials, the degree of implementation of the "New Social Studies" …
Majority Rule: An Analysis Of Majoritarianism And Its Justifications, John P. Belter
Majority Rule: An Analysis Of Majoritarianism And Its Justifications, John P. Belter
Theses and Dissertations
No abstract provided.
An Exploratory Study Of Male Primary Teachers: Their Perceptions Of Professional Status And Potential For Increasing Their Number, Byron L. Meek
An Exploratory Study Of Male Primary Teachers: Their Perceptions Of Professional Status And Potential For Increasing Their Number, Byron L. Meek
Theses and Dissertations
Procedure: The problem of this study was to identify and describe the perceptions male primary school teachers hold about themselves and their profession. Through this, the professional status and potential for increasing the number of male primary teachers was determined.
Procedure: The research population consisted of the. twenty male primary teachers in the public school systems of Minneapolis and St. Paul, Minnesota. The data for this study was obtained through in-depth personal interviews which were based on an original questionnaire designed for the specific purpose of this study. A summary of responses given to each question was followed by an …
The Dependence Of The Apparent Pk Of Ion Exchange Celluloses Of Ionic Strength, Paul Cyril Gillespie
The Dependence Of The Apparent Pk Of Ion Exchange Celluloses Of Ionic Strength, Paul Cyril Gillespie
Theses and Dissertations
Diethylaminoethyl cellulose was titrated with acid and base in various concentrations of NaCl. The pK values were determined from titration curves using a graphical technique. Two titratable groups were observed from the acid titration curve, a major and a minor group. The minor group, which represented 20% of the acid titration, was barely detectable in the base titration curve and had a salt-independent pK of 6.0. The pK of the major group was strongly salt-dependent and was approximately a linear function of log N NaCl. An equilibrium shift caused by the counter ion may explain the salt dependence. Hydrogen bonding …
Isolation, Purification, Scanning Electron Microscopy And Bacterial Dna Uptake Of Plant Protoplasts, Bronwyn G. Hughes
Isolation, Purification, Scanning Electron Microscopy And Bacterial Dna Uptake Of Plant Protoplasts, Bronwyn G. Hughes
Theses and Dissertations
Protoplasts were isolated from tobacco and barley leaves in sucrose or mannitol using commercially available cellulases and macerozymes. Barley growth and protoplast isolation and purification conditions were optimized so that protoplasts were obtained in high yields free of unwanted debris and organelles. A technique for processing barley and tobacco protoplasts for examination by scanning electron microscopy was developed in which protoplasts seem to have maintained their structural integrity. Barley and tobacco protoplasts took up 3H-B. subtilis DNA, 125I-B. subtilis DNA or 125I-M. luteus DNA as a linear function of time (0-6 hr) and DNA concentration (0-200 μg/ml). Up to 16 …
Certain Edaphic And Biotic Factors Affecting Vegetation In The Shadscale Community Of The Kaiparowits Area, Vane Orlan Campbell
Certain Edaphic And Biotic Factors Affecting Vegetation In The Shadscale Community Of The Kaiparowits Area, Vane Orlan Campbell
Theses and Dissertations
A study area on the southern extensions of the Great Basin cold desert (Kaiparowits Basin, Utah) was selected which has had varying amounts of disturbance. Areas with similar slope and exposure in the Shadscale community were sampled. At each site, soil samples were collected and percent sand, percent clay, percent silt, soluble salts, and hydrogen ion concentrations were measured. Cluster analysis based on percent frequency of the perennial species showed that eight groups or sub-communities were definable within the area sampled. Patterns within the vegetation were shown to be independent with the use of cluster analysis. Discriminant analysis on soil …
Mccarthyism In Utah, Richard Swanson
Mccarthyism In Utah, Richard Swanson
Theses and Dissertations
The exaggerated anti-Communist crusade of Senator Joseph McCarthy allegedly gained the support of a majority of Americans during the early 1950's. It is historically important and interesting to question that supposition by considering the character of McCarthy's following in each state. This study shows that in Utah sympathy for the second Red Scare abounded and evidences of McCarthyism were readily apparent.
Three indicators illustrate Utah's support for the Wisconsin senator. The defeat of Elbert Thomas in 1950 dramatically epitomizes the successful use of incriminating allegations effectively employed by McCarthy. The election, or re-election, of McCarthy supporters and the defeat of …
One Means Of Providing Long-Term Financial Security For The Average American Family, Karl Provost
One Means Of Providing Long-Term Financial Security For The Average American Family, Karl Provost
Theses and Dissertations
This s tudy is designed to identify one means of providing financial security with a minimum of time, experience, and f unds . With the rise of inf lation and relative reduction in the buying power of disposable income, there exists a distinct risk of arriving at retirement and having little more t han social security. Through sound financial planning, and building of an investment portfolio, one can provide protection against a potentially drastic reduction in income
Development Of A Pictorial Leisure Interest Assessment Instrument For Use In Leisure Counseling, Nancy Ellen Mclennan
Development Of A Pictorial Leisure Interest Assessment Instrument For Use In Leisure Counseling, Nancy Ellen Mclennan
Theses and Dissertations
No abstract provided.
Applied Analysis Of Computer Simulated Decompression Profiles, Stephen Jack Settle
Applied Analysis Of Computer Simulated Decompression Profiles, Stephen Jack Settle
Theses and Dissertations
No abstract provided.
The Lectures On Faith: An Authorship Study, Alan J. Phipps
The Lectures On Faith: An Authorship Study, Alan J. Phipps
Theses and Dissertations
The Lectures on Faith, important since 1834 to the theology of The Church of Jesus Christ of Latter-day Saints, are of disputed authorship. In an attempt to ascribe the lectures to their true author from five possible candidates, Joseph Smith, Sidney Rigdon, Parley P. Pratt, Oliver Cowdery, and W. W. Phelps, the use of 738 function and other words in the lectures was compared with the use of the same words in known writings of the candidates.
The study showed that Sidney Rigdon's use of function words corresponded very closely with that in Lectures One and Seven, and fairly well …
An Economic Analysis Of North Dakota Water Requirements : An Input-Output Linear Programming Approach, Brian D. Eggleston
An Economic Analysis Of North Dakota Water Requirements : An Input-Output Linear Programming Approach, Brian D. Eggleston
Theses and Dissertations
No abstract provided.
The Late Cenozoic Geology Of West-Central Minnesota From Moorhead To Park Rapids, Roderic L. Perkins
The Late Cenozoic Geology Of West-Central Minnesota From Moorhead To Park Rapids, Roderic L. Perkins
Theses and Dissertations
Based on lithostratigraphic and geomorphic information, the Quaternary history of an area bounded by the Red River of the North, 95°00' west longitude, 47°00' and 46°45' north latitude in west central Minnesota, includes seven geologic episodes:
Glacial advances and retreats over all or part of the study area occurred during the first six geologic episodes. The glaciers advanced either southward across northern Minnesota, entering the study area from the northeast; or across eastern North Dakota and southwestern Manitoba, entering the study area from the northwest. As a result of these glacial events the sediment of Unit A, Sebeka Formation, New …
Stratigraphy And Paleontology Of The Upper Cretaceous Morden Member (Vermilion River Formation) In The Outcrop Area, Northeastern North Dakota, Fredrick D. Wosick
Stratigraphy And Paleontology Of The Upper Cretaceous Morden Member (Vermilion River Formation) In The Outcrop Area, Northeastern North Dakota, Fredrick D. Wosick
Theses and Dissertations
The Late Cretaceous Morden Member is the oldest exposed bedrock unit in North Dakota, cropping out in eastern Cavalier County in the northeastern part of the state. The Morden overlies the Greenhorn Formation and underlies the Niobrara Formation. The Canadian Morden Member of the Vermilion River Formation is used in lieu of the Carlile Formation because of the lithologic similarity and proximity to the Morden type area, and the distance from the Carlile Formation type section in southeastern Colorado.
Three principal sections were measured and sampled at 2-meter intervals for microfaunal and lithologic analysis. A single well was used for …
Western North Dakota Lignite Strip Mining Processes And Resulting Subsurface Characteristics, Laramie M. Winczewski
Western North Dakota Lignite Strip Mining Processes And Resulting Subsurface Characteristics, Laramie M. Winczewski
Theses and Dissertations
Data on subsurface conditions obtained prior to strip mining is useful in planning effective mining and reclamation procedures as well as predicting the subsurface characteristics after reclamation. The redistribution of the overburden sediments is less predictable, however.
Through field observations, the major mining factors controlling subsurface structure and overburden sediment redistribution were determined. These include the geometry of the coal body, pit sequence, pit curvature, overburden thickness and managerial input. At a given location, however, the detailed structures and distribution of sediment types within a waste bank were observed to depend upon the dragline cutting pattern, distance between dragline positions, …
Glacial Stratigraphy Of Southeastern North Dakota, Michael Camara
Glacial Stratigraphy Of Southeastern North Dakota, Michael Camara
Theses and Dissertations
Seven lithostratigraphic units are recognized in the glacial sediment {till) of southeastern North Dakota. Five of these units are not formally named; eventually most of these units will be correlated with formations in surrounding regions. Two of these units, Gardar and Dahlen, are formations recognized in northeastern North Dakota {Hobbs, 1975). The seven lithostratigraphic units are differentiated and correlated using the percentage of the sand, silt, and clay fractions of the till and using the proportion of igneous and metamorphic rock fragments, limestone and dolomite fragments, and shale fragments in the very-coarse-sand fraction (1 to 2 mm) of the till. …
Paleozoology Of Cores From The Tyler Formation (Pennsylvanian) In North Dakota, U.S.A., James C. Grenda
Paleozoology Of Cores From The Tyler Formation (Pennsylvanian) In North Dakota, U.S.A., James C. Grenda
Theses and Dissertations
A well-preserved fauna from the Tyler Formation was studied in cores from 34 wells drilled for oil in Billings, Golden Valley, McKenzie, Slope, and Stark Counties. Forty-four species of invertebrates, eleven form-species of conodonts, at least three types of fish, and at least four genera of plants· are present. Invertebrate species include 1 bryozoan, 15 brachiopods, 14 bivalves, 2 gastropods, 2 cephalopods, 2 annelids, 2 branchiopoda, at least 2 ostracodes, 2 malacostracans, 1 insect, and 1 echinoderm. Chordates include 1 "nonmarine" shark, at least 1 paleoniscoid fish, and 1 possible crossopterygian fish. A new genus and species of eocarid malacostracan …
Petrology Of The Alaskites Of The Boulder Batholith, Montana, Kenneth C. Malick
Petrology Of The Alaskites Of The Boulder Batholith, Montana, Kenneth C. Malick
Theses and Dissertations
The Boulder batholith outcrops in the Northern Rookies of western Montana. It is exposed over an area of 5700 km^2 and extends about 112 km along the continental divide from Mullen Pass on the north to 32 km south of Butte. The Boulder batholith represents an invasion of the upper zones of the crust by a large volume of fluid granodioritic quartz monzonitic magma emplaced at the close of a main orogenic episode during late Cretaceous and Paleocene time.
Eight alaskite bodies were chosen for sampling from previous field experience and from geologic maps published by the U.S.O.S. Textural descriptions, …
The Relationship Of Conformity And Nonconformity In Children To Preference For And Achievement In Mathematics And Spelling., James Bruce Knudsen
The Relationship Of Conformity And Nonconformity In Children To Preference For And Achievement In Mathematics And Spelling., James Bruce Knudsen
Theses and Dissertations
No abstract provided.
The Effects Of Differential Feedback On Expected And Actual Mathematical Achievement Of Male And Female College Freshmen., Shahin Oliyaee-Zand
The Effects Of Differential Feedback On Expected And Actual Mathematical Achievement Of Male And Female College Freshmen., Shahin Oliyaee-Zand
Theses and Dissertations
No abstract provided.