Digital Commons Network^™

An Experimental Investigation Of Highly Undercooled Magnesium Silicate Chondrule-Like Spherules, Harry Nicholas Planner

Earth and Planetary Sciences ETDs

A series of experiments, involving molten magnesium silicate spherules that were subjected to high initial cooling rates and allowed to nucleate at high temperatures (985-1350°C), were performed so as to compare their thermal histories to the resulting internal features. Such comparisons could be used to decipher the thermal history of chondrules and the conditions surrounding their formation based on their mineralogy, crystal morphology, and overall texture. Various features of the spherules were correlated with the initial high cooling rate process, nucleation temperature, and the maximum temperature attained during the recalescance to demonstrate the restrictions resulting from or their sensitivities to …

Geochemistry And Petrology Of The Orbicular Rocks, Sandia Mountains, New Mexico, Robert David Enz

Earth and Planetary Sciences ETDs

Orbicular rock located on the west side of the Sandia Mountains, New Mexico, at W. long. 106° 29' 30", N. lat. 35° 13' 04", was first reported by Fitzsimmons (1966). Recently Thompson and Giles (1974) published a paper describing.three types of orbicular rock in the locality which they believed to have been formed by a metasomatic process. Without knowledge of the work of Thompson and Giles, this thesis was initiated as a detailed field, petrographic, geochemical and geochronologic study of these orbicular rocks.

Four types of orbicular rock, including another previously unreported occurrence of orbicular granite about 2 km north …

Unusual Lavas From Molokai, Hawaii: Alkalic Olivine Basalts Transitional To Hawaiites And Strontium-Rich Mugearites, Paul Frank Hlava

Earth and Planetary Sciences ETDs

ABSTRACT

Systematic data has recently been published on the compositions of major mineral phases in rocks of the tholeiitic, alkalic, and nephelinic suites from the island of Maui, Hawaii. The present study was initiated to provide similar data from the rocks of Molokai, Hawaii, from which the nature of interisland variations could be established. During the study, it became obvious that many of the rocks were unusual and so this study also provides information on the bulk rock, trace element, and mineral compositions of alkalic olivine basalts transitional to hawaiites and Sr-rich mugearites.

From a total of 14 basalts collected …

Distribution-Free Interval Estimation Of The Largest Α-Quantile, William E. Plouff

Masters Theses

No abstract provided.

Public Access To The Beaches Of Connecticut, Don W. Oswalt

Theses and Major Papers

Elements of the public of Connecticut are engaged in direct conflict against private and municipal property rights over the issue of increased public access to beaches of the state. In Connecticut, as well as the nation, definite solutions to the problem are slow to materialize. The public's right to the whole beach is being clarified by only a few states, while public access under common law remains a clouded issue nationwide. The research study I am proposing would examine in detail the legal issues involved, the state and federal legislative actions, geographical considerations, etc. I feel that the resulting collation …

Debris Slides And Related Flood Effects In The 4-5 August 1938 Webb Mountain Cloudburst: Some Past And Present Environmental Geomorphic Implications, Carl A. Koch

Masters Theses

On the night of 4-5 August, 1938 a cloudburst occurred over Webb Mountain, Tennessee, that lasted three hours with a rainfall in excess of twelve inches. This sudden deluge caused considerable debris sliding and flooding which resulted in the loss of eight lives and extensive property damage in the narrow valleys below the slide area. Over 100 individual slide scars were identified in the study area, 40 of which occurred in the Matthew Creek watershed.

The debris slide movement is thought to have been initiated by sliding at the head of the scar, with the mass of moving rock, soil …

Geology Of Klump's Cave, Perry County, Missouri, Ernest L. Kern

Masters Theses

No abstract provided.

Spin-Flip In 12C (P,P') 12C Near The 9.14 Mev Doublet, John Ambani Muhanji

Masters Theses

No abstract provided.

Models For Estimating Psychiatric Bed Needs, Patricia A. Brenneman

Loma Linda University Electronic Theses, Dissertations & Projects

Inland Counties Comprehensive Health Planning Council wished to estimate the psychiatric bed needs by type (such as state hospitals, board and care homes, etc.) in San Bernardino County from the distributions of patient arrivals and of lengths of stay. A statistical description of the system during 1973 was considered the first step toward estimating future bed needs. A computer simulation model using IBM's programming language General Purpose Simulation System (GPSS) was developed and was found to be unsatisfactory.

Theorems were then developed for a statistical model, seeking to predict future bed needs. The most convenient of these theorems states that …

Asymmetric Induction In Grignard Reactions In A Chiral Solvent, John E. Davis

Dissertations

No abstract provided.

Debris Slides And Related Flood Effect In The 4-5 August 1938 Webb Mountain Cloudburst: Some Past And Present Environmental Geomorphic Implications, Carl A. Koch

Masters Theses

On the night of 4-5 August, 1938 a cloudburst occurred over Webb Mountain, Tennessee, that lasted three hours with a rainfall of twelve inches. This sudden deluge caused considerable debris sliding and flooding which resulted in the loss of eight lives and extensive property damage in the narrow valleys below the slide area. Over 100 individual slide scars were identified in the area, 40 of which occurred in the Matthew Creek watershed.

The debris slide movement is thought to have been initiated by sliding at the head of the scar, with the mass of moving rock, soil and forest debris …

Geology Of The Northern Part Of The Sierra Cuchillo, Socorro And Sierra Counties, New Mexico, Florian Maldonado

Earth and Planetary Sciences ETDs

The northern Sierra Cuchillo, Socorro and Sierra Counties, New Mexico is approximately 32 miles northwest of Truth or Consequences, New Mexico. The Sierra Cuchillo is a narrow fault-block range in the Basin-Range province and is a structurally high element west of the Rio Grande trough. It is bordered on the west by the Winston graben and the Black Range and on the east by Monticello graben and the San Mateo Mountains.

Permian rocks consist of the Yeso and San Andres Formation, with an aggregate thickness of 2100 ft (640 m). Upper Cretaceous rocks, 40 ft (10 m) thick, consist of …

The Development Of An Arsenic(V) Selective Electrode, Sandra Gee Kang

Dissertations and Theses

The object of this research was to develop an arsenic(V) selective electrode. The electrode is based on a solid state membrane prepared by pressing a precipitate of silver arsenate-silver sulfide into a pellet. After the electrode was made, experiments were designed to check for three general characteristics of the electrodes: dependence of potential on pH for constant arsenic(V) concentration; dependence of potential on arsenic(V) concentrations at constant pH and extent of interference due to phosphate and arsenic(III) ions. From these measurements, it was found that Ag₂HAs0₄ was formed originally in the membranes containing a small fraction of …

Solid Phase Peptide Synthesis, John Gibson

Honors Theses

Solid phase peptide synthesis is a relatively new biochemical process for polymerization of amino acids. It involves the selection of amino acids, blocking groups, and resins. This procedure was first investigated by R. B. Merrifield in an attempt to simplify previous methods of peptide synthesis. Since other methods involved amino acids, peptide esters, and diketopiperazines, peptide synthesis had been limited by amino acid selection and a host of technical problems. Solid phase synthesis alleviates many of these difficulties and limitations by supplying a faster and simpler stepwise addition of a wide variety of naturally occurring and synthetically prepared amino acids …

Quantitative And Qualitative Seasonal Analysis Of The Surface Zooplankton Of Magothy Bay, Virginia, Malcom E. Browne

OES Theses and Dissertations

No abstract provided.

The Thermal And Photolytic Rearrangements Of Isatoic Acid Diazide, Ana Alejandre Ciereszko

Chemistry & Biochemistry Theses & Dissertations

The primary objective of this research has been the thermolysis and photolysis of isatoic acid diazide 1. Thermolysis in low boiling solvents produced the acylazido benzimidazolone 10, while refluxing in high boiling solvents gave rise to the imidazoindazoline 31, presumably via Curtius rearrangements.

Photolysis of the diazide in methylene chloride gave rise to two photo products, 10 and 31, while photolysis in tetrahydrofuran produced only 31.

A study of the spectral and chemical characteristics of these products have been carried out.

The Purification And Characterization Of Methylmalonyl Coa Mutase From Bovine Brain, Damon Martin

Theses and Dissertations

Methylmalonyl CoA mutase has been purified over 2300-fold from bovine brain using fractional precipitation, ion exchange resins, and gel filtration procedures. The crude extract had an equal mixture of mutase in the halo- and apoenzyme form. After the final purification step the ratio had changed to 86% holo-enzyme and 14% apoenzyme. The mutase enzyme had a pH optimum of 7. 0 in Tris-HCI buffer. The Km values for L-methylmalonyl CoA and succinyl CoA were 7.7 x 10^-4 M and 1.8 x 10^-4 M respectively. The equiIibrium constant in the direction of succinyl CoA formation was 19. Inhibition with N-ethylmalei-mide was …

Characterization Of Zinc-Containing Metalloproteins By Resonance Raman Spectroscopy, Robert Edward Derry

Dissertations and Theses

Cobalt-substituted carboxypeptidase and carbonic anhydrase were chosen as candidates for resonance Raman spectroscopy because they possess visible absorption due to the Co(II)-protein complex. However, no evidence for resonance-enhanced peaks due to the cobalt-containing chromophore was found with laser excitation near the visible absorption bands (514.5 nm) or closer to the ultraviolet absorption bands (457.9nm).

Arsanilazocarboxypeptidase and model azotyrosine compounds were selected for a Raman spectroscopic investigation because they have intense absorption bands in the visible region. All of these substances yielded similar resonance Raman spectra. Although there was no evidence for specific zinc-ligand vibrations, shifts in vibrational frequencies of the …

Concerns Of Postnatal Mothers About Sexuality, Sheela A. Gideon

Loma Linda University Electronic Theses, Dissertations & Projects

An exploratory study was designed to find out what questions mothers had about postnatal sexuality. A questionnaire was prepared by the nurse researcher to find out answers to the following questions.

1. What specific questions do mothers have about sexual relations following delivery?
2. Do mothers feel free to initiate discussion about resumption of intercourse following delivery?
3. Do mothers like their husbands to be included in the discussion?
4. When do mothers prefer to receive information regarding sexual relationships following delivery?

The questionnaire was mailed to fifty primipara mothers between three and four weeks after delivery. Mothers with pronounced anemia, heart and lung …

Exploration Of The Incidence Of Identified Emotional Disorders In Selected General Hospitals Of Nebraska, Arlene M. Van Horn

Loma Linda University Electronic Theses, Dissertations & Projects

A descriptive-comparative survey using content analysis of medical records has been done to determine the frequency with which emotional disorders are identified by medical personnel in the population hospitalized in small general hospitals in north-central Nebraska.

A systematic, random sample of medical records was taken from two hospitals arbitrarily included in the study on the basis of bed capacity and distance from mental health facilities.

Each medical record that was reviewed has been placed in a category based on whether an emotional disorder was identified in it by the medical personnel, or whether it contained recorded behaviors that could indicate …

Prenatal Instruction Of Breast Feeding Mothers, Anita Berry

Loma Linda University Electronic Theses, Dissertations & Projects

This experimental study tested the effect of prenatal instruction on the success of a group of mothers who desired to breast feed their infants. It was hypothesized that mothers receiving information on how to nurse their infants, how to prevent complications and how to cope with common problems of breast feeding would have a higher success rate than those not so instructed.

Criteria for success was that the mothers would have an adequate supply of milk to meet the nutritional demands of their infant without supplementation, would have fewer and less severe complications, and would express a higher degree of …

Alumina-Catalyzed Cope Rearrangement, Paul Jhy-Shing Wang

Dissertations and Theses

The alumina-catalyzed Cope rearrangements of meso- and dl-3,4-diphenylhexa-1,5-diene were examined in detail, following up a preliminary observation by H. Berg at Portland State University. Commercial column-chromatography grade alumina was employed, and was further activated before use by heating at 650-700° for four hours.

Using a ratio of 20 mg of dl-3,4-diphenylhex-l,5-diene to 1 g of alumina in heptane, the Cope rearrangement was complete within 15 minutes at room temperature to give exclusively trans,trans-1,6-diphenylhexa-1,5-diene. This was identified.by melting point, infrared spectroscopy and vapor phase chromatography.

The catalyzed rearrangement of meso-3,4-diphenylhexa-l,5-diene was run using the same diene …

The Effects Of Pentachlorophenol On The Electrical Conductivity Of Lipid Bilayer Membranes, William Harvey Perman

Dissertations and Theses

The effects of pentachlorophenol (PCP), a widely used pesticide, on the electrical characteristics of lipid bilayer membranes has been studied. When a small amount of PCP (even at a concentration of a few micromoles per liter) is present in the electrolytic solution surrounding the membrane, the electrical conductivity of the membrane significantly increases. The present work was concerned with detailed measurements of the changes in the conductivity caused by PCP under chemically controlled conditions. The experimental results were analyzed to determine the permanent species in the membrane, and an attempt was made to correlate the data with existing models of …

Imbedding Cayley Graphs, Brian L. Garman

Masters Theses

No abstract provided.

The Benthic Communities Of The Eastern Rocky Shore Areas Of Goshen Bay, Utah Lake, Thomas Whitney Toole

Theses and Dissertations

Information about the benthic macroinvertebrate populations along the eastern shore of Goshen Bay, Utah Lake, Utah, can be used, in part, to determine future management of the lake. In the project herein reported, cement artificial substrate samplers were used to sample two types of substrate: rubble and compacted calcareous tufa. Monthly samples were obtained from each type of substrate from March 1972 to May 1973. An amphipod, Hyalela azteca and a chironomid, Dicrotendipes fumidus were the dominant organisms in numbers and tiomass. Amphipod numbers were dependent upon the amount of algal standing crop. Elimination of this area could affect the …

A Generalized Dirac Equation With Spin I, Tilahun Eneyew

Masters Theses

No abstract provided.

Geology Of The Sweetwater Canyon Area And Origin Of Interbasinal Canyons, Southwestern Montana, James Carl Peterson

Masters Theses

No abstract provided.

The Extended Tukey Procedure Compared To The Scheffe And Bonferroni Procedures, Wilber B. Emmert

Masters Theses

No abstract provided.

A Model Of An Environmental Advisory Committee For City Government, Henry Barrett Baker

Masters Theses

No abstract provided.

The Sediments And Sedimentary Environments Of A Barrier Island, Cedar Island, Virginia, John Walter Heinsius

Masters Theses

No abstract provided.