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Managing Conflict In The Restored Church, C. Brooklyn Derr

BYU Studies

No abstract provided.

Full Issue

Swiss American Historical Society Newsletter

No abstract provided.

Book Review: Notes In Brief

Swiss American Historical Society Newsletter

A collection of short book reviews.

Letter Of The Editor, Leo Schelbert

Swiss American Historical Society Newsletter

Dear Compatriots and Friends:

Summer is here already, and soon Americans and Swiss will celebrated their respective days of National Independence. To commemorate these events I am pleased to include in this newsletter two addresses which were given last year in Boston and Cambridge, Massachusetts, on those festive occasions.

Book Review: Die Schweiz Die Wir Wollen; Stimmem Der Jungen Generation, Heinz K. Meier

Swiss American Historical Society Newsletter

This is a collection of short articles (two to fourteen pages) of 34 representatives of the "young generation" on a wide range of subject matters currently under discussion in Switzerland.

Β-Delayed Proton Decay Of 9c, David D. Allred, John E. Esterl, J. C. Hardy, R. G. Sextro, Joseph Cerny

Faculty Publications

The delayed-proton spectrum following the β decay of 9C (t1/2=126.5±1.0 msec) was found to consist primarily of a continuum extending from 13 to 1.5 MeV, the latter being the lowest energy observed. In addition to the previously observed peaks at 9.28 and 12.30 MeV (C.M.), possible peaks between 3 and 7 MeV have been tentatively identified.

Plants New To The Utah Flora, Larry C. Higgins

Great Basin Naturalist

New additions to the Utah flora include Cryptantha dumetorum Greene, C. elata (Eastwood) Payson, C. longiflora (Nels.) Payson (Boraginaceae), Hulsea heterochroma A. Gray, Parthenium incanum H. B. K. (Compositae), Arctostaphylos pringlei C. C. Parry (Ericaceae), Eremocarpus setigerus (Hook.) Benth., Euphorbia micromera Boiss, Tragia ramose (Euphorbiaceae), Leptochloa filiformis (Lam.) Beauv., Schismus arabicus Nees. (Gramineae), Epilobium nevadense Munz (Onagraceae), Lomatium megarrhizum (A. Nels.) Mathias (Umbelliferae), and Aloysia wrightii (Gray Heller) Verbenaceae.

Prey Stage Distribution, A Factor Affecting The Numerical Response Of Typhlodromus Occidentalis To Tetranychus Mcdanieli And Tetranychus Pacificus, B. A. Croft

Great Basin Naturalist

The ability of Typhlodromus occidentalis to oviposit and numerically increase when consuming various life stage distributions of Tetranychus mcdanieli and Tetranychus pacificus were studied at several interaction levels. On field-collected apple leaves and 6×6 cm artificial substrates, oviposition rates and rates of increase (r) were higher when predators were fed populations of spider mites with high proportions of eggs, and larvae as compared to prey colonies composed mainly of deutonymphs-male adults and female adults. Feeding studies indicated that reproductive differences were mainly due to increased predation and food intake when predators were offered eggs and larvae of Tet. …

Five New Varieties Of Eriogonum (Polygonaceae), James L. Reveal

Great Basin Naturalist

No abstract provided.

A Revision Of The Psoralea Lanceolata Complex (Leguminosae), C. A. Toft, S. L. Welsh

Great Basin Naturalist

The Psoralea lanceolata complex is widely distributed in western North America from Saskatchewan to Texas and westward to Washington, Oregon, Nevada, and Arizona. The complex has received many interpretations, mostly on the basis of provincial floras and manuals. The present paper attempts to summarize the treatments of previous workers and to present an overview of the complex. The Psoralea lanceolata var. stenophylla is proposed. Distribution maps and illustrations of all entities are included.

A New Species Of Gymnodamaeus From Colorado (Acarina: Cryptostigmata, Gymnodamaeidae), Tyler A. Woolley

Great Basin Naturalist

The taxonomic history of the genus Gymnodamaeus is reviewed for North American species. A new species, Gymnodamaeus chalazionus, is described from Colorado and compared with species from both the western and eastern U.S. Among other features, the new species differs from G. veriornatus Higgins, 1961, in the shorter interlamellar hairs and the surface structure of the notogaster and genital plates. The new species is also compared with G. quadricaudatus Jacot, 1937, G. pearsei and minor Banks, 1947; with G. gildersleeveae and ornatus Hammer 1952, from Canada, and with G. elegantulus Hammer, 1958, from South America. Twelve scanning electron micrographs are …

Full Issue, Vol. 32 No. 2

Great Basin Naturalist

No abstract provided.

Vegetation Zones Around A Small Pond In The White Mountains Of Arizona, B. Ira Judd

Great Basin Naturalist

Because of a previous study of wet meadows, an investigation of Carnero Lake, White Mountains of Arizona, which is ecologically advancing toward a wet meadow, was undertaken. Information on eutrophication and successional patterns in ponds of the ponderosa pine is needed for better understanding of that ecosystem. Aerial infrared photographs were taken to delineate areas containing aquatic vegetation and as an aid in identifying zones around the pond. Five zones from open water to ponderosa pine were found. Abundance of vegetation by species was estimated in each zone. Protein analyses are given for 29 of the 32 species listed.

Observations On The Nesting Biology Of The Long-Billed Curlew, Dennis M. Forsythe

Great Basin Naturalist

Observations were made on four nesting attempts by Long billed Curlews (Numenius americanus) in 1965 and 1966 in Box Elder and Cache Counties, Utah. The location, nest composition, and number of eggs of each nest are presented. In one instance eggs were laid at intervals of forty eight hours or less. Data on weight and measurement and color of eggs are given. Data for the only two completed nests indicates incubation periods of twenty-seven and twenty-eight days respectively. The distraction display of the incubating family is described for the first time.

The Sonoran Subspecies Of The Lizard Ctenosaura Hemilopha, Hobart M. Smith

Great Basin Naturalist

Five subspecies of Ctenosaura hemilopha are recognized, including C. h. hemilopa from Baja California; C. h. insulana from Isla Cerralvo, Gulf of California; C. h. conspicuosa from Isla San Esteban and (?) Isla Lobos. Gulf of California; and two new subspecies: C. h. macrolopha from Sonora and northern Sinaloa, and C. h. nolascensis from Isla San Pedro Nolasco, Gulf of California. The species is thought to have evolved from C. pectinata, through the somewhat similar C. h. macrolopha or its forerunner. Its range probably extended at an earlier time northward around the Gulf of California, thence southward through Baja California, …

Notes On Nevada Solpugids, Dorald M. Allred

Great Basin Naturalist

No abstract provided.

Front Matter, Vol. 32 No. 2

Great Basin Naturalist

No abstract provided.

Dead Great Blue Heron Found At 11,000 Foot Utah Elevation, Gary L. Hickman

Great Basin Naturalist

A Great Blue Heron (Ardea herodias) was found dead at the west end of the Utah Uinta Mountains at approximately 11,000 feet. Rain, fog, and very low cloud ceilings reducing visibility to almost zero causing directly or indirectly the heron's death was postulated.

End Matter, Vol. 32 No. 2

Great Basin Naturalist

No abstract provided.

Rotary Engine Designs Based On A Particular Off-Set Cavity/Rotor System, M. Dean Black

Theses and Dissertations

The subject of this thesis is a family of rotary engines, each consisting of a two-tipped rotor turning about an off-center axis within a nearly round cavity.

End Matter, Vol. 16 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 16 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

The Hyobranchium And Throat Myology Of The Adult Ambystomidae Of The United States And Northern Mexico, John E. Krogh, Wilmer W. Tanner

Brigham Young University Science Bulletin, Biological Series

The 16 species and subspecies of the Ambystomidae of the United States are placed into six groups according to their throat morphology as follows: The Dicamptodon group, the Rhyacotriton group, the A. Annulatum–A. cingulatum group, the A. gracile-A. jeffersonianum-A. mabeei-A. macrodactylum-A. maculatum group, the A. talpoideum group, the A. opacum-A. texanum group, and the A. rosaceum-A. t. tigrinum-A. t. melanostictum-A. t. nebulosum group. Dicamptodon appears to be the most primitive group and Rhyacotriton the most specialized. Based on the morphology of the throat region it is suggested that A. rosaceum be placed in the tiger salamander group as a subspecies …

Three New Species Of Petrified Wood From The Upper Jurassic Morrison Formation Of Southern Utah, David Arthur Medlyn

Theses and Dissertations

The petrified wood for this study was collected from the Upper Jurassic Morrison Formation in the south central part of Utah on the Colorado Plateau. The study area, located near Clay Point, Garfield County, Utah, is south of the Henry Mountains. The site is relatively undisturbed containing many well preserved specimens. This study constitutes the first detailed study of fossil coniferous woods of the Morrison Formation. Although this formation contains abundant petrified wood, its floral composition has been virtually unknown. Three genera have been identified in this study: Protopiceoxylon Gothan, Mesembrioxylon Seward, and Taxaceoxylon (Unger) Krausel. Protopiceoxylon has only been …

Electrolytic Synthesis Of [Gamma]-Diketones, Leon F. Pahler

Theses and Dissertations

Four γ-diketones were synthesized by using a modification of the Kolbe electrolytic condensation of β-ketocarboxylic acids. [--see equation in thesis--] The following γ-diketones were synthesized in moderate yields: 2,5-hexanedione, 4,7-decanedione, 2,2,7,7-tetramethyl- 3,6-octanedione, and 1,4-diphenyl-1,4-butanedione (34, 39, 23, and 27, respectively). However, attempted preparation of the following γ-diketones failed: 3,4-dimethyl- 2,5-hexanedione, 3,3,4,4-tetramethyl-2,5-hexanedione, and 1,4-di(2-thienyl)-1,4-butanedione. Attempts to electrolytically condense α-alkyl and α, α-dialkyl substituted monocarboxylic acids have been reported and all attempts have ended in failure; similarly, the attempts to synthesize 3,4-dimethyl and 3,3,4,4-tetramethyl- 2,5-hexanedione from 2-methyl and 2,2-dimethyl-3- oxobutanoic acid, respectively, failed. The preparation of 1,4-di(2-thienyl)-l,4-butanedione failed because the product or …

A New Method For The Preparation Of Alkylnaphthyl Ethers And Sulfides, Edward Ying-Shih Chen

Theses and Dissertations

The reaction of monohalonaphthalenes with metal alkoxides and mercaptides in a solvent mixture of the corresponding alcohol and dimethyl sulfoxide (DMSO) has been studied. These reactions are convenient methods for the preparation of alkylnaphthyl ethers and sulfides. Only direct nucleophilic substitution was observed in the reactions of bromonaphthalenes with sodium methoxide and sodium nbutyl mercaptide. The reaction of fluoronaphthalene with potassium t-butoxide also proceeded by way of direct nucleophilic substitution rather than the 1,2-dehydronaphthalene intermediate as in the reactions of bromonaphthalene with potassium t-butoxide. The use of a base which is weaker than t-butoxide can change the apparent reaction mechanism …

Rhenium Catalyzed Hydrogenation Of Maleic Anhydride And Crotonaldehyde, William Russel Dixon

Theses and Dissertations

The preparation of a number of supported rhenium catalysts is reported. The determination of their activity and selectivity and of optimal reaction parameters for the reduction of maleic anhydride and crotonaldehyde is reported. Optimal time of hydrogenation was chosen as one hour and pressures were chosen as 2000 psig for crotonaldehyde and 3000 psig for maleic anhydride. Quantitative reduction of maleic anhydride to tetrahydrofuran occurred at 275° with charcoal supported rhenium catalysts. Lower temperatures (ca. 200°) produce quantitative amounts of butyrolactone. Unsupported catalysts at low temperatures (100°) selectively reduce crotonaldehyde to crotyl alcohol, but at very low conversion rates. Temperatures …

The Reproductive Biology Of The Leech Helobdella Stagnalis (Linnaeus) In Utah Lake, David L. Tillman

Theses and Dissertations

The reproductive biology of the brooding leech Helobdella stagnalis (Linnaeus) in Utah Lake was studied for an 18 month period from June 1970 to December 1971. In determining the annual reproductive cycle, the number of adult leeches carrying eggs or young were counted at weekly intervals during the reproductive season and monthly during the rest of the year. Gonadal staging data from histological sections were correlated with the field collection data. It was found that two broods of young were produced by the adult animals during the reproductive season. Continuous water temperatures were recorded at the study site throughout the …

Toward Hydrogen Bonds Of Predictable Geometry, Robert Shao-Chih Hsu

Theses and Dissertations

A literature review on the geometry of hydrogen bonding showed that the geometry is often de-emphasized or even ignored, probably because of the inherent flexibility of many systems studied. Examination of molecular models suggested the geometrically constrained bicyclo [2, 2, 1] heptane system wherein hydrogen bond distances and angles might be more easily predicted. Dihydroboration-oxidation of norbornadiene was shown to yield exo, exo-2,5-norbornadiol, thus clarifying uncertainties in the literature. 2, 5-Norbornadiol was oxidized to the corresponding dione, heretofore inadequately characterized. Several derivatives of the dione were prepared, and spectral data were accumulated for the dione, its precursor, and its derivatives. …

The Optimum Design Of A Shock Absorber To Minimize The Force Transmitted To The Supporting Base Of A Vibrating Equipment, J. P. Singh

Theses and Dissertations

The present study involved two types of analyses as a part of the investigation leading to the design of a shock absorber providing optimal vibration control and minimum transmissibility. Those two types of analyses were the following.