Physical Sciences and Mathematics Commons^™

Photoaffinity Labeling Of The Antimycin Binding Site In Rhodopseudomonas Sphaeroides, Emily Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to identify the site of interaction of antimycin with the ubiquinone-cytochrome b-c1 oxidoreductase in the photosynthetic bacteria, Rhodopseudomonas sphaeroides. To accomplish this goal, three areas of research were undertaken: the synthesis of a radiolabeled, photoaffinity analog of antimycin, identification of the inhibitory characteristics of this analog, and the photoaffinity labeling of the antimycin binding site. All three areas were accomplished.

The major finding of this study was the identification of an 11,000 dalton polypeptide as the predominantly labeled protein. Although this polypeptide was not exclusively labeled, it was consistently labeled and showed competition …

Petrology Of The Middle Jurassic Twin Creek Limestone, Lincoln And Sublette Counties, Southwestern Wyoming, David R. Raubvogel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Twin Creek Limestone of Middle Jurassic age was studied in the Tunp, Salt River, and Wyoming Ranges in southwestern Wyoming. Modern carbonate environments and their ancient analogs were compared with information obtained from field study and petrographic analysis of samples of the Twin Creek Limestone in order to delineate environments of deposition, paleogeography, and diagenetic history.

Six major lithofacies were recognized: (1) carbonate mudstone; (2) carbonate mudstone breccia; (3) fossiliferous wackestone; (4) packstone-grainstone; (5) terrigenous mudstone; and (6) sandstone. These lithofacies were deposited in a variety of environments, including outer shelf platforms (carbonate mudstone and fossiliferous wackestone), oolitic sand …

Patterns Of Earthquakes And The Effect Of Solid Earth And Ocean Load Tides At Mount St. Helens Prior To The May 18, 1980, Eruption, Stephen R. Mcnutt, R. J. Beavan

School of Geosciences Faculty and Staff Publications

Seismographs near Mount St. Helens Volcano recorded an earthquake swarm lasting nearly 2 months prior to the catastrophic May 18, 1980, eruption. The earthquakes are divided into four classes based on station CPW (Δ = 116 km) seismogram characteristics: (1) events with Sv:P amplitude ratio >3 and dominant frequency >3 Hz; (2) events with Sv:P ratio between 1 and 3 and dominant frequency >2 Hz; (3) events similar to characteristic 2 but with a strong (probably surface wave) phase just after the S phase; and (4) events with frequencies between 1 and 2 Hz lacking a clear S phase. The …

The Genus: A Macroevolutionary Problem, Cliff A. Lemen, Patricia W. Freeman

School of Natural Resources: Faculty Publications

This paper centers on the macroevolutionary problem surrounding the concept of the vertebrate genus. We have been fascinated by the apparent tendency of members of a genus to have the same shape in contrast to the great differences in shape among genera at the family level. If this is true, genera would be considered shape conservative groups. Our initial view of this contrast in shape variation within and among genera leads us to question whether the same evolutionary processes that produce genera can simply be extended to produce families. To approach this question two things need to be done. First, …

Structure And Petrology Of Tertiary Volcanic Rocks In Parts Of Toms Cabin Spring And Lucin Nw Quadrangles (Box Elder Co.), Utah, Bruce Edward Scarbrough

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A series of late Tertiary rhyolitic and dacitic flows, domes, and minor pyroclastic rocks form an elongate volanic mass along the northwestern Utah-northeastern Nevada border. The structure of the flow banding and the linear arrangement of vents indicate that the mass represents a multi-sourced extrusive complex which erupted through many fissure-type conduits. A 39 km² area at the southern end of the mass was studied in detail in order to gain a better understanding of the eruptive nature and history of these Tertiary volcanic rocks. Age dating reveals that volcanism in the study area was episodic, and covered a …

Evaluation Of Low-Temperature Geothermal Potential In North-Central Box Elder County, Utah, Matthew C. Davis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to continue the assessment of low-temperature geothermal resources in Utah started by the Utah Geological and Mineral Survey. The area of interest with in this report is north-central Box Elder County, Utah. Exploration techniques used included chemical analyses of water from wells and springs, temperature surveys, and temperature-depth measurements in unused wells within the study area. The highest water temperatures (31, 30, and 29°C) recorded in this research were located in three separate geographic regions, suggesting that no single warm water occurrence dominates the study area.

Total dissolved solid (TDS) concentrations ranged from 294 …

H2o2-Tfa-H2so4 Oxidation Of Coal & Coal Model Compounds, Darrell Pierce

Masters Theses & Specialist Projects

The Deno coal oxidation technique was investigated as a tool for the characterization of the aliphatic components of coal. This technique was applied to three high sulfur Kentucky coals:(1) No. 789673, (2) KCER 4002-Elkhorn No. 2, (3) KCER 7122-Ky. No. 12 and a low sulfur coal from Alpha Resources, Inc. Model compound investigations on toluene, ethyl benzene, propyl benzene, bibenzyl, indan and tetralin were also conducted. Different addition modes were investigated using ethyl benzene and diphenylmethane. The stability of the expected aliphatic acid products in the oxidation reagent were also investigated.

The data indicated the following:

1. Pyrite present in high …

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Desulfurization Of Coal Using Carboxylic Acids & Peracids, Dwight Watson

Masters Theses & Specialist Projects

Bituminous coals were desulfurized by leaching in a 325 ml, agitated, autoclave with hot, dilute solutions of carboxylic acids, buffered carboxylic acids, carboxylic salts, and carboxylic salt:alkali combinations. The partial pressure of oxygen was not increased as it was found not to increase the amount of organic sulfur removal. The effect of increasing carboxylic size and decree of desulfurization was studied. Among the carboxylic acids studied, formic acid removed the greatest amount of organic sulfur;and iso-valeric acid removed the greatest percentage of pyritic sulfur. It was found that there is a direct correlation between the amount of organic sulfur removal …

The Low-Temperature Pyrolysis Of A Nitrated North Dakota Lignite, Dennis Spears

Masters Theses & Specialist Projects

Low-temperature pyrolysis is the thermal degradation of coal in an inert atmosphere at temperatures below 700°C. Coal pyrolysis is well-studied, being a complex mix of many reactions. Pyrolysis is affected by changes in many different process variables, such as temperature, pressure and heating rate. Low-temperature pyrolysis is an old and well-studied process.

Chemical pretreatments have been used to beneficiate conversion processes, inducln pyrolysis. Nitration has not been one of them. Pyrolyzing a nitrated coal would, hopefully, rapidly devolatilize the coal and break up the matrix into more commercially usable products. The nitration procedure developed by The Standard Oil Company minimizes …

A Bacteriological And Chemical Analysis Of Nonpoint Source Pollution In A Karst Aquifer Bowling Green, Kentucky, Wayne Green

Masters Theses & Specialist Projects

Monthly water samples collected from four sites in the Lost River Groundwater Basin, a shallow karst aquifer in the Bowling Green-Warren County area of Kentucky, represented samples from sites receiving conduit and diffuse flow. All sites were severely contaminated with bacteria, and on some occasions the surface water criteria for some heavy metals were exceeded.

Of the total 334 bacterial colonies identified 92.1% were verified as Escherichia coli by the API20E system. Acinetobacter calcoaceticus var. anitratum accounted for 2.10% of colonies; Citrobacter freundii for 0.30% Klebsiella pneumoniae for 0.90%; Klebsiella oxytoca, 0.90%; Citrobacter amalonaticus 0.30%; Enterobacter cloacae, 1.20%; …

Spontaneous Heating Of Coal & Electrochemical Measurements Of Corrosion Rates, Bihan Naderi

Masters Theses & Specialist Projects

A new and relatively fast method for measuring the susceptibility of coal to spontaneous heating was studied in this work.

This method is based on the ability of coal to adsorb iron(III) from aqueous solutions. The more iron taken up by the coal, the more susceptible the coal is to spontaneous heating. The relationship holds for most of the coals being analyzed during this research project and for other succeeding ones.

The experimental procedures used and results obtained are discussed. A brief literature survey of other applied methods which have been studied, including a description of many factors affecting the …

Enteric Contamination Of An Urban Karstified Carbonate Aquifer: The Double Springs Drainage Basin, Bowling Green, Kentucky, Geary Schindel

Masters Theses & Specialist Projects

Biological and chemical analysis of water samples, collected from surface and subsurface streams was preformed to determine the quantity and biologic sources of enteric contamination in the Double Springs Groundwater Basin, an urban karstified carbonate aquifer under Bowling Green, Kentucky. Major flow paths, drainage basin boundaries and geologic/hydrologic relationships were identified for the basin. Analysis of biologic contaminates using fecal coliform /fecal streptococcus counts and ratios were conducted for baseflow and storm events and related to the Double Springs hydrographs. Analysis was also conducted to determine the source of sulfides responsible for the growth of sulfur fixing bacteria in the …

Non-Matrix Corrected Organic Sulfur Determination In Coal By Energy Dispersive X-Ray Spectroscopy, Carol Clark

Masters Theses & Specialist Projects

A method for non-matrix corrected organic sulfur analysis by energy dispersive X-ray spectroscopy has been developed using petroleum coke standards. This technique capitalizes on the fact that when a substance is excited by an electron beam it will emit photons of electromagnetic radiation in the X-ray range. The emitted X-rays are characteristic of the excited elements in the substance. Typically, electron beam microanalysis is a rapid, nondestructive analytical technique to quantitatively measure organic sulfur in coal. The results show good correlation to ASTM values for numerous well characterized bituminous coals with a wide range in total and pyritic sulfur content. …

Corrosion Of Carbon Steel In Synthetic Coal Liquid Wash Waters, Keith Evans

Masters Theses & Specialist Projects

The Potentiodynamic corrosion measuring technique is an electrochemical analytical method which measures corrosion rates of a metal exposed to a corrosive environment.

The corrosion characteristics of carbon steel A1044 in aqueous solutions of aniline hydrochloride,simulating a coal liquid wash water, were determined by this method. The effects of solution velocity and oxygen concentration on the system were also determined.

A bimodal corrosion rate effect was observed in deaerated solutions of 1000 and 5000 ppm chloride as aniline hydrochloride. This effect was interpreted to be the result of the formation of a film on the surface of the specimen.

Petrology Of The Middle Cambrian Ute Formation, North-Central Utah And Southeastern Idaho, Edward James Deputy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Middle Cambrian Ute Formation was studied in the Bear River Range and the Wellsville Mountains of north-central Utah and southeastern Idaho. The depositional textures and sedimentary structures found within the rocks were compared with similar modern sediments and ancient rocks to determine depositional environments, paleogeography, and diagenetic alterations.

The rocks of the Ute Formation were divided into five basic types. These five rock types were formed within four identifiable lithofacies: 1) elastic marine shelf; 2) carbonate marine shelf; 3) agitated shoal; and 4) quiet-water shoal.

The sequence of elastic and carbonate sediments is believed to have been deposited in …

Phocoena Spinipinnis, Robert L. Brownell Jr., Ricardo Praderi

United States Department of Commerce: Staff Publications

Order Cetacea, Suborder Odontoceti, Superfamily Delphinoidea, Family Phocoenidae. The genus Phocoena now includes four species. No subspecies are rec- ognized in P. spinipinnis.

Program Abstracts, 96th Session, Iowa Academy Of Science, April 27-28 1984, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science

The Annual Meeting Of The Iowa Academy Of Science April 27-28, 1984 [Program, 96th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Test 1514: Ford Tw-5 And 8530 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1517: Ford Tw-35 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1515: Ford Tw-15 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1516: Ford Tw-25 And 8730 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1511: Massey-Ferguson 3505 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1512: Massey-Ferguson 3525 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Flood Insurance Study, City Of Cedar City, Utah, Iron County

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the City of Cedar City, Iron County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study will be used to convert Cedar City to the regular program of flood insurance by the Federal Emergency Management Agency (FEMA). Local and regional planners will use this study in their efforts to promote sound flood plain management.

Further Comments On The Nature And Developmental History Of Quaternary Pumpkin Creek, Banner, And Morrill Counties, Nebraska, Robert F. Diffendal Jr.

School of Natural Resources: Faculty Publications

The occurrence of Quaternary anorthosite-rich sand and gravel deposits in south-central Morrill County, Nebraska, supports the idea that Pumpkin Creek formerly flowed farther east than it does today. This eastern extension of the creek was abandoned when another headward cutting tributary of the North Platte River cut through the divide between Pumpkin Creek and the North Platte just east of Jail and Courthouse rocks and captured Pumpkin Creek.

Unusual clast types found in Quaternary deposits along Pumpkin Creek in Banner County may be used to determine some characteristics of the streams that carried them. For example, armored mud balls and …

Test 1513: Massey-Ferguson 3545 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Mixing Angles, B-Meson Life-Time In The Six-Quark Model Based On So(10) X U(1)Pq, V. Parameswaran Nair, Louis Michel, Kameshwar C. Wali

Publications and Research

We show that a recently proposed multigenerational, grand unified model with three parameters (top-quark mass and two phases of Higgs vacuum expectation values) yields results in good agreement with the most recent phenomenological limits placed on the weak mixing angles of the quarks. These limits take into account the experimental value for B-meson life-time.

The Effects Of Mowing On The Rodent Community Of A Native Tall Grass Prairie In Eastern Nebraska, Cliff A. Lemen, Mary K. Clausen

School of Natural Resources: Faculty Publications

Although fires are an integral part of prairie ecology (Bragg and Hulbert 1976, Daubenmire 1968, Rice and Parenti 1978, Zimmerman and Kucera 1977), there is evidence that mowing can serve at least some of the functions of fire (Hover and Bragg 1981) in prairies. Mowing, in fact, has two major advantages over burning. First there is no need for large crews to control the fire, and second the hay produced can be used as a cash crop. Because mowing is an attractive alternative to burning for prairie preserves it is important to determine the effects of mowing on the prairie. …

Basidiomycete Fungi Reported On Living Or Dead Giant Sequoia Or Coast Redwood, Douglas D. Piirto, John R. Parmeter, Jr., W. Wayne Wilcox

Natural Resources Management and Environmental Sciences

No abstract provided.