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Articles 27931 - 27960 of 29589
Full-Text Articles in Entire DC Network
The Sage Creek Mountain Local Fauna Of The Bridger Formation Near Lonetree, Wyoming, Steven W. Barker
The Sage Creek Mountain Local Fauna Of The Bridger Formation Near Lonetree, Wyoming, Steven W. Barker
Theses and Dissertations
The Bridger Formation in the Green River Basin has been divided into two members, the lower Black's Fork member and the upper Twin Buttes member. 'Ihe Black's Fork member is composed of' biostratigraphlc zones A and Band the Twin Buttes member is com-posed of biostratigraphic zones C, D and E. Recent workers have found that zones A and B contain the same fauna and therefore represent just one biostratigraphic zone (McGrew 1971, Robinson 1970). Future studies of the biostratigraphic zones of the Twin Buttes member are necessary to determine if the C, D and E zones are valid. Some are …
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 …
Plant Dioecy, Ecology, Evolution And Sex Reversal, D. Carl Freeman
Plant Dioecy, Ecology, Evolution And Sex Reversal, D. Carl Freeman
Theses and Dissertations
The distribution of dioecious species among forty-four plant communities of western United States was examined. The dioecious habit is most prevalent in harsh environments. In many communities, over 20 percent of the species and 40 percent of the individuals are dioecious. Dioecy is most common among woody species which are pollinated by wind. It is concluded that inbreeding depression alone is insufficient to account for all known facts concerning dioecy. Disruptive selection acting upon differential success of gametes produced on sites of differing quality appears to have played a major role in producing separate sexed individuals. Dioecious species reported to …
Drosophila Pseudoobscura Of The Great Basin, Monte E. Turner
Drosophila Pseudoobscura Of The Great Basin, Monte E. Turner
Theses and Dissertations
Four Utah populations of Drosophila pseudoobscura from the Wasatch Mountains in Utah were sampled and characterized for third chromosome gene arrangements. The original samples in this area were taken in 1940 and 1950. At that time the populations were essentially monomorphic for the Arrowhead arrangement, with small percentages of Pikes Peak and Chiricahua also found. The current samples show these populations to contain eight third chromosome arrangements; seven previously described (AR, PP, CH, ST, TL, OL, EP) and a newly discovered endemic arrangement (American Fork, AF), with breakpoints 63E and 70D. The frequency of AR had decreased to 25% in …
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 …
Bionomics Of A Subterranean Gall Midge (Diptera : Cecidomyiidae) From Artemisia Ludoviciana, Ranasinghe
Bionomics Of A Subterranean Gall Midge (Diptera : Cecidomyiidae) From Artemisia Ludoviciana, Ranasinghe
Theses and Dissertations
Bionomics of a gall midge that emerged from nodulelike structures of herbaceous sage, Artemisia ludoviciana Nutt., was studied as a part of a larger investigation on possible nitrogen fixation by this plant. Infested plants collected from the field were regularly examined in the laboratory where some of them were grown in a liquid nutrient medium. In the laboratory, adult midges were reared from the pupae and induction of infestation was attempted. Apparent nodulation on these plants is caused by the subterranean bud galls of a previously unknown gall midge species, Rhopalomyia subhumilis Gagne. The life history of this midge is …
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 Revision Of The Herbaceous Members Of The Genus Atriplex (Chenopodiaceae) For The State Of Utah, K. H. Thorne
A Revision Of The Herbaceous Members Of The Genus Atriplex (Chenopodiaceae) For The State Of Utah, K. H. Thorne
Theses and Dissertations
The herbaceous Atriplex species which occur in Utah are revised. This study is based on herbarium specimens and field observations throughout the state. My treatment largely follows that of Rall and Clements (1923). A brief discussion of the history, diagnostic characteristics and phylogeny is given. A descriptive key that includes all taxa has been prepared: type locality, synonyms, general habitat and distribution is reported for each entity. Illustrations and maps are included. One variety is described as new.
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 …
Phlox Longifolia Nuttall (Polemoniaceae) Complex Of North America, Frederick J. Peabody
Phlox Longifolia Nuttall (Polemoniaceae) Complex Of North America, Frederick J. Peabody
Theses and Dissertations
Over 1,000 herbarium specimens including 24 type specimens were examined in an attempt to achieve a clearer understanding of the Phlox longifolia complex. Four variables were measured for each specimen and the data were statistically analyzed by disciminant analysis. Using a previously published system of classification for the complex approximately 73% of the measured variation among the specimens was accounted for by that system. The clustering patterns produced in this first analysis indicated that a more conservative approach would be advisable. The formulataion and subsequent application of a modified system produced a grouping of specimens that accounted for 95% of …
Behavior And Age Class Structure Of Wintering Northern Bald Eagles (Haliaeetus Leucocephalus Alascanus) In Western Utah, Ronald A. Joseph
Behavior And Age Class Structure Of Wintering Northern Bald Eagles (Haliaeetus Leucocephalus Alascanus) In Western Utah, Ronald A. Joseph
Theses and Dissertations
Bald Eagles in Cedar and Rush Valleys of western Utah were studied from 1975 to 1977. Arriving in mid-November, the eagles departed in mid-March. A statewide Bald Eagle census revealed 200 to 300 birds. Wintering eagle populations have remained stable for the past 10 years. Immatures comprised 35% of the population in 1975-76 and 33% in 1976-77. While Black-tailed jackrabbits are the primary food source of wintering eagles in western Utah, other mammalian carrion serve as supplementary food items. Eagles utilized 4 communal night roosts. Three day communal roosts were located on south facing slopes. The social existence of Bald …
Organizations And Institutions, Sungha Kim, Toshiyuki Aoki, Tsuen-Hsuin Tsien, Robert Sewell
Organizations And Institutions, Sungha Kim, Toshiyuki Aoki, Tsuen-Hsuin Tsien, Robert Sewell
Journal of East Asian Libraries
No abstract provided.
What's New In Technical Processing, Thomas Hun-Tak Lee
What's New In Technical Processing, Thomas Hun-Tak Lee
Journal of East Asian Libraries
No abstract provided.
Taiwan College And University Library Collections: A Preliminary Statistical Profile, Anthony W. Ferguson
Taiwan College And University Library Collections: A Preliminary Statistical Profile, Anthony W. Ferguson
Journal of East Asian Libraries
No abstract provided.
A Translation And Commentary Of The Joseph Smith Hypocephalus, Michael Dennis Rhodes
A Translation And Commentary Of The Joseph Smith Hypocephalus, Michael Dennis Rhodes
BYU Studies
No abstract provided.
Ex Nihilo: The Development Of The Doctrines Of God And Creation In Early Christianity, Keith Norman
Ex Nihilo: The Development Of The Doctrines Of God And Creation In Early Christianity, Keith Norman
BYU Studies
No abstract provided.
Missionaries For The Dead: The Story Of The Genealogical Missionaries Of The Nineteenth Century, Jessie L. Embry
Missionaries For The Dead: The Story Of The Genealogical Missionaries Of The Nineteenth Century, Jessie L. Embry
BYU Studies
No abstract provided.
Publications, Frank Joseph Shulman, Howard G. H. Nelson, Eugene Wu, Rosemary Levenson, Tsuen-Hsuin Tsien
Publications, Frank Joseph Shulman, Howard G. H. Nelson, Eugene Wu, Rosemary Levenson, Tsuen-Hsuin Tsien
Journal of East Asian Libraries
No abstract provided.
Nathan Smith (1762-1828) Surgical Consultant To Joseph Smith, Leroy S. Wirthlin
Nathan Smith (1762-1828) Surgical Consultant To Joseph Smith, Leroy S. Wirthlin
BYU Studies
No abstract provided.
Truman Coe's 1836 Description Of Mormonism, Milton V. Backman Jr.
Truman Coe's 1836 Description Of Mormonism, Milton V. Backman Jr.
BYU Studies
No abstract provided.
Everybody Is Ignorant, Only On Different Subjects, Eliot Butler
Everybody Is Ignorant, Only On Different Subjects, Eliot Butler
BYU Studies
No abstract provided.
News From Molokai Alfons L. Korn, Robert J. Morris
Committee Activities, Paul J. Ho, Eugene Wu, Hideo Kaneko, Karl Lo, Gloria Hsia
Committee Activities, Paul J. Ho, Eugene Wu, Hideo Kaneko, Karl Lo, Gloria Hsia
Journal of East Asian Libraries
No abstract provided.
Some Issues In Teaching Agricultural Economics To Foreign Graduate Students, B. Gardner Delworth
Some Issues In Teaching Agricultural Economics To Foreign Graduate Students, B. Gardner Delworth
Faculty Publications
Several words in the title help set the scope of the paper. My concern is with the training of students from foreign countries, generally those best characterized as less developed countries (LCD's). These students come to the United States to be trained as professional economists and I assume will spend a career researching problems related to agriculture.
The Relationship Of Reduced Levels Of Atp To Inhibited Chondrogenesis In The Production Of Limb Deformity Induced By 6-Aminonicotinamide, Val C. Sheffield
The Relationship Of Reduced Levels Of Atp To Inhibited Chondrogenesis In The Production Of Limb Deformity Induced By 6-Aminonicotinamide, Val C. Sheffield
Theses and Dissertations
6-aminonicotinamide (6-AN), an analogue and antagonist of nicotinamide, impairs cartilage formation and results in shortening of the limb when administered to chick embryos. 6-AN forms an abnormal NAD analogue (6-ANAD), which inhibits the activity of NAD-dependent enzymes associated with the production of ATP. The mechanism of action of 6-AN was studied by measuring the biosynthesis of protein and DNA, and the sulfation and glycosylation of chondroitin sulfate in control and 6-AN treated cartilage from 8-day chick embryos. The cartilage was also assayed for ATP levels. Incorporation of Na235SO4 was inhibited by 6 h treatment with 10 μg/ml 6-AN, whereas 3H-thymidine …
The Genus Haemolaelaps (Acarina: Laelapidae) In The Northwest Ethiopian Biogeographical Region, Calvin J. Sakamoto
The Genus Haemolaelaps (Acarina: Laelapidae) In The Northwest Ethiopian Biogeographical Region, Calvin J. Sakamoto
Theses and Dissertations
This paper presents the results of a taxonomic stury of mites of the genus Haemolaelaps collected from small mammals of 8 political subdivisions of the northwest portion of the Ethiopian Biogeographical Region. Specimens taken from 2,863 small mammals from a wide variety of habitats and localities were examined. The Haemolaelaps fauna includes 23 species, 10 of which are described as new: H. bellasoma, H. caurinus, H. chaetospinicus, H. crocidura, H. desmodilliscus, He. ebsi, H. malachela, H. parahirsti, H. sikapusi and H. taterakempi. Numerical taxonomic and multicariate analyses were used to assess variation and clustering. A key for identification of females …
"Der Glarner": Abraham Blumer Of Zion Reformed Church, Allentown, Professor William T. Parsons
"Der Glarner": Abraham Blumer Of Zion Reformed Church, Allentown, Professor William T. Parsons
Swiss American Historical Society Newsletter
Up in the Lechadaal Pennsylvania Dutch Country, people tend to credit origins and you will often hear them say of virtues and of foibles, "he came by it honestly." They mean that children inherit characteristics, or that a new generation often mirrors the traits of its predecessor. So it was, surely, with Abraham Blumer, Ministre du Sancte Evangile, heir to family traditions of leadership in local church, business and civic affairs.
Sex-Linked Mental Retardation Without Physical Stigmata (Martin-Bell Or Renpenning Type) : A Genetic And Psychometric Approach, Craig L. Hanis
Sex-Linked Mental Retardation Without Physical Stigmata (Martin-Bell Or Renpenning Type) : A Genetic And Psychometric Approach, Craig L. Hanis
Theses and Dissertations
Screening the Utah State Training School (a resident institution for the mentally retarded) for kindreds having at least two institutionalized sibs generated 54 sib groups. Of these, 20-male only sibships had histories compatible with sex-linked mental retardation without physical stigmata (Martin-Bell or Renpenning type). Affected males had no characteristic physical stigmata (an appreciable number did have speech problems and/or seizure disorders) and exhibited IQs ranging from 5 to 74 with a mean of 34.2. Obligate carrier females had a mean IQ score of 91.9 (range, 79 to 106), which is as would be predicted due to random X-inactivation. Carrier females …