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Remarques Sur La Signification Des Expériences En Géodynamique Karstique, Ph. Renault

International Journal of Speleology

Distinction is made between the experiment which “demonstrates” having an argumentative value - and the experiment which “questions” nature by isolating one factor and by determining the mode of its action. The concept of experiment in geology and in geodynamics and the distinctions between geodynamics and geophysics are discussed. Karstic geodynamics considers the action of fluids - mainly liquids - on a soluble rock. It is a science bordering the different branches of geochemistry, hydrology, the mechanics of rocks, and geophysics. Researches in karstic geodynamics are based upon measurements obtained through field surveys, or upon the utilization of a subterranean …

Écologie De Fonticola Notadena De Beauchamp (Turbellarié, Triclade) Dans La Grotte De La Balme (Isère, France); Survie En Période De Sécheresse, René Ginet, Rodolphe Puglisi

International Journal of Speleology

During many months a year the acquatic Planaria (F. notadena) living in a small pool in the La Balme cave are subjected to a drought with the complete drying out of their biotope; they support in situ this lack of water and, living in a latent way inside the clayey matrix. Thanks to the great hygroscopy of the clay, enough humidity stays around the Planarians to enable them to survive. During this period the Planaria may undergo spontaneous divisions resulting in their asexual multiplication.

Die Bedeutung Der Pleistozänen Vogelfaunen Der Höhlen Im Ungarischen Mittelgebirge, Tibor Farkas

International Journal of Speleology

In the present study, the fossil bird fauna of the caves of the Hungarian Middle Mountains is examined for evidence in support of the hypothesis that the Carpathian Basin may have served as a faunal refugee during the last Quaternary glacial period. As an introduction, the reasons for the refugee hypothesis, including paleobotanical and glacial theoretical aspects, are discussed. Since the first bird fossils of the cave fauna considered in this paper belong to the Würm I-II, the faunistic conditions of the Riss glacial period are not discussed in detail, The known faunas up to the Würm II are interstadial, …

Antrolana Lira, A New Genus And Species Of Troglobitic Cirolanid Isopod From Madison Cave, Virginia, Thomas E. Bowman

International Journal of Speleology

Antrolana lira, a new genus and species of troglobitic cirolanid isopod, is descnibed from Madison Cave, in the Appalachian Valley of Virginia. The problem of its origin from a marine ancestor is discussed. A supplementary description is given of Cirolanides texensis, and records of its occurrence are given. A key is given to the troglobitic Cirolanidae of the Western Hemisphere, and their known distribution is shown on a map. The subgenus Speocirolana Bolivar y Pieltain is raised to genus.

I. Preparation And Properties Of Alkyl And Aryl Substituted Thioquinazolines And Sulfoxides ; Ii. An Investigation Of The Quinazoline 3-Oxide--1,4-Benzodiazepine 4-Oxide Rearrangement, Marvin C. J. Kuchar

Theses and Dissertations

I. The quinazolines, a branch of the benzodiazine class of aromatic nitrogen hetercycles, do not occur to any great extent in naturally occurring compounds. The discovery of the antimalarial febrifugine and its structure elucidation led to the preparation and investigation of a host of new quinazolines in the search for new and more effective antimalarials. Most of the present body of information governing the quinazolines arose out of these synthetic studies. The present study has been accomplished with a four-fold purpose in mind: (1) to investigate the susceptibility of chloroquinazolines to nucleophilic displacement reactions by thiols or their salts, (2) …

Energy Migration In Rare Earth Complexes, John Jerome Freeman

Chemistry and Chemical Biology ETDs

Complexes of trivalent samarium, europium, terbium, and dysprosium were prepared for investigations of the luminescence properties of complexed rare earth ions. Rare earth chilates derived from benzoylacetone, dibenzoylmethane, and acetylacetone; rare earth chlorides solvated with water and deuterium oxide; and rare earth oxides dissolved in sodium metaphosphate glasses were synthesized for these studies.

Decay Of Intensity Of Certain Hg Lines In An Hg-Ar Discharge, Edward E. Stepp, Richard A. Anderson

Physics Faculty Research & Creative Works

The afterglow of four mercury spectral lines was examined in a mercury-argon electric discharge. The 2537- Å line decays in a complex fashion with three definite modes of decay. The 4077-, 4358-, and 5461- Å lines exhibited an even more complicated decay. These lines exhibited an initial rapid decay followed by an increase in intensity. Finally the intensity of these lines went through two maxima before they decayed in intensity at a slow constant rate. The actual intensity behavior of the 2537- Å line was masked by the imprisonment of resonance radiation. It is postulated that the main processes governing …

Radiochemical Studies: Isotopic Exchange Reactions, Solvent Effects, Preparation And Properties Of Carrier-Free Amalgams, Hans L. Hamster

Chemistry and Chemical Biology ETDs

The work described in this section is concerned with the kinetics of an S_N2 reaction, the isotopic exchange reaction between iodide ions and p-nitrobenzyl iodide, carried out in an aprotic solvent, acetone, in the presence of various substituted phenols and anisole. This reaction was carried out at concentration of potassium iodide low enough to insure the absence of ion pairs.

Thermodynamics Of I) Metal Cyanide Coordination, Ii) Water Formation, And Iii) Metal Halide Coordination, John Dewey Hale

Theses and Dissertations

ΔH values for the formation of Ni(CN)4(aq)= have been determined calorimetrically at 25° using a simple calorimeter and a thermometric titration procedure at high and low ionic strengths, respectively. Extrapolation of these ΔH values to infinite dilution resulted in a ΔH° value of -42.7 kcal./mole. Combination of ΔH° and ΔF° values gives a ΔS° value of -5.5 e.u. for Ni(CN)4(aq)= formation. A value of +70 e.u. is calculated for the ionic entropy of Ni(CN)4(aq)=. A preliminary investigation of the Zn(CN)4(aq)= system indicated the existence of zinc cyanide complexes other than Zn(CN)4= and allowed calculation of an approximate ΔH° value of …

Neuron-Proton Scattering At 23.6 Mev, Jerome G. Beery

Physics & Astronomy ETDs

The angular distribution for neutron-proton scattering was measured at a neutron energy of m3.6 MeV. The measurement was made using the Los Alamos Variable Energy Cyclotron and a liquid hydrogen bubble chamber. The angular distribution was normalized to a total n-p cross section of 408 mb.

Application Of Shower Theory To High Energy Total Absorption Čerenkov Radiation Counter, Frederick Young

Physics & Astronomy ETDs

Theoretical calculations describing the performance of a Čerenkov counter designed as a total absorption gamma ray spectrometer for the energy range 100-1000 Msv are presented, using approximation "A" from the standard shower theory, and R. Wilson's quasi-analytical method of cascade shower analysis.

The Diffraction Of Polarized Light From A Laser By A Straight Edge, Robert Lawrence Berger

Physics & Astronomy ETDs

The purpose of this experiment was to determine the effect of the polarized light from a highly coherent light source on the diffraction pattern of a metallic straight edge.

An Investigation Of Steric Inhibition Of Resonance In Liquid Scintillators, Richard L. Taber

Chemistry and Chemical Biology ETDs

It is well known that the replacement of two or more of the ortho hydrogen atoms in the benzene rings of biphenyl by lager atoms or groups hinders the rotation about the l.l'-carbon single bond in the biphenyl system. If the groups are so large that they are unable to pass each other upon rotation of the l,l'-bond, then the two benzene rings are forced to assume a non-planar configuration.

Study Of Fission Neutron Spectra With High-Energy Activation Detectors, James A. Grundl

Physics & Astronomy ETDs

The energy spectra of neutrons from the fission of U235, U233, and Pu239 have been studied with seven high-energy activation detectors covering the range 0.6 to 16 Mev. Interpretation is in terms of the Maxwellian spectral function E^1/2 exp(-E/T). By means of a unique cavity arrangement within a moderator to obtain pure thermal-neutron-induced fission neutrons, the average energies of the three spectra are found to be in the ratios

U235: U233: Pu239= (1): (1.016+or-0.003): (1.039+or-0.003).

Differences between the normalized spectra are most pronounced at high energies as exemplified by the relative Pu239:U235 flux ratios 1.17+or-0.013 for 611 Mev.

Review Of The Physical Aspects Of Osmotic Pressure, Joseph F. Goffaux

Physics & Astronomy ETDs

It should be mentioned that this paper deals mostly with the work done by others and only a certain portion is original. The student wishes to state that he is presenting a thesis that would be considered theoretical and not empirical. The history of the work done in the field of osmotic pressure is treated at length and much of the theory used by the experimenters is derived. Many periodicals carry the papers written by the scientists of osmotic pressure and some of these men have spent perhaps fifteen of twenty years on their experiments.

The Monadnock Volume 37, June 1963, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 37 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

A Transister Quenching Circuit For Geiger Counter Tubes, Andrew M. Simko

Physics & Astronomy ETDs

This thesis attempt to provide a solution to a basic problem inherent in the operation of Geiger-Mueller counting tubes, that is, reduction of the insensitive time, or “dead time”, following the discharge. Many researchers, using various quenching gases for internal quenching and various vacuum tube circuits for external quenching, have succeeded in reducing the “dead time” significantly. Reduction of the insensitive time provides more efficient and accurate counting. The solutions presented in this thesis utilize transistor circuits instead of vacuum tube circuits for external quenching. In an extensive research of current literature, no attempts to transistorize a quenching circuit could …

Telemetry Of The Azimuthal Orientation Of A Balloon-Borne Package, Edwin L. Vandenoord

Physics & Astronomy ETDs

It is the purpose of this paper to investigate a method of determining azimuthal orientation during flight by detecting the polarization of the carrier wave used in the telemetry equipment. Equipment was constructed which demonstrates the feasibility of this method.

A Correlation Between The Responses Of A Cherenkov Counter, And A Liquid Scintillator, To An Extensive Air Shower, John Wolcott

Physics & Astronomy ETDs

To date there have been no adequate measurements of the energy spectrum of high energy cosmic gamma-rays. This information can only be obtained from instrumentation located above the atmosphere. An experiment has been designed by Dr. Leavitt at the University of New Mexico to obtain this information. It is to be orbited in the S-17 Orbiting Solar Observatory.

Fast Neutron Induced Fission Of U238, Michael J. Bennett

Physics & Astronomy ETDs

This work describes an experimental study of the energetics of the fission of U²³⁸ performed with solid state detectors. The fissions were produced by fission-spectrum neutrons from a reactor. The procedure used for calibrating the detector response is described and the effects of some experimental uncertainties, such as pulse height defect and neutron emission, are discussed.

A Theoretical And "Experimental" Investigation Of One-Dimensional Molecular Distribution Functions, Samuel Blackman

Physics & Astronomy ETDs

The presence of long range forces and of various types of boundary conditions may be expected to cause deviations from the well known Maxwell-Boltzmann velocity distribution, resulting in a spatially dependent velocity distribution. One possible method for obtaining a theoretical spatially dependent velocity distribution is to attempt an approximate solution for Liouville's equation. This is done in this thesis. The effects of a long range repulsive force inversely proportional to the interparticle separation as well as the effects of three types of wall boundary conditions upon the velocity distributions of a one-dimensional set of ordered particles have also been investigated …

A Radio Frequency Power Oscillator And Impedance Matching Device., Charles D. Preston

Physics & Astronomy ETDs

Certain molecules, called “globular” molecules, when first solidified form what are called “plastic” crystals. They are called “globular” either because they may exhibit an approximate spherical symmetry about their center of structure or because they may be small enough or of such a shape as to appear spherically symmetric because of rotation. The first case might be exemplified by methane (CH4) which has the configuration of a regular tetrahedron. The second case might be exemplified by hydrogen chloride (HCL).

Survey Of Concepts Held By Bedside Nurses Relative To The Prevention Of Pressure Sores, Joan Winifred Sommer

Loma Linda University Electronic Theses, Dissertations & Projects

This study was concerned with the problem of determining what understandings the bedside nurse has of the principles involved in the prevention of pressure sores. Since pressure sores are still a problem in nursing care, a study such as this was needed to ascertain the knowledge of the bedside nurse relative to their prevention. The immediate purpose of the study was to determine the concepts held by bedside nurses by asking them to state what they did to prevent pressure sores. The long range purpose was to contribute to better in-service education through the use of information gained in the …

The Efficacy Of A Limited Clinical Undergraduate Orthodontic Program, Benjamin H. Robson

Loma Linda University Electronic Theses, Dissertations & Projects

One of the major and long standing problems in undergraduate education has been the operation and maintenance of an efficient orthodontic clinic.

Literature based on the history of undergraduate orthodontic clinics, as well as of previous investigations into their operations was reviewed. Little if any, specific recorded information could be found.

The specific purpose of this investigation was to inspect the elements of and the accomplishments of a specific undergraduate orthodontic clinic. The efficacy was based upon an investigation along two avenues of study: (1) A complete review of all case histories and records for an analysis of the nature …

Identification Of Emotional Needs Of Patients With Infectious Hepatitis, Elizabeth Tidmore Shafqat

Loma Linda University Electronic Theses, Dissertations & Projects

It was the purpose of this study to identify the emotional needs of patients with infectious hepatitis through the use of nursing process studies. The information obtained, it was hoped, would be helpful in giving nurses better insight into the emotional needs of these patients and to give a basis for planning nursing care.

The descriptive survey was the method used; the tool, the nursing process study. Nursing care was given to six patients between the ages of 18 and 45 who had infectious hepatitis without other complications.

The nursing process studies were filled out by the investigator on each …

An Evaluation Of Two Cleansing Techniques Used On Female Catheterization, Fern Iva Potter

Loma Linda University Electronic Theses, Dissertations & Projects

The Problem: This study was designed to ascertain which of two pre-catheterization cleansing procedures now in common use for the female patient is more effective in producing an area relatively free of microorganisms.

The Need: Indications of need for the study were: (1) an increasing body of literature linking catheterization with frequent urinary tract infections, many of which are "silent" but have extremely serious sequelae; (2) lack of uniformity in defining adequate pre-catheterization cleansing; and (3) absence of any recorded research to determine an adequate cleansing technique.

Method: The experimental method of research was used to collect data on one …

A Study Of Fever Differences Following Cardiac Surgery, Cleta Phyllis Lane

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to find out whether the temperature level following heart and great vessel surgery is greater following the use of the heart-lung machine than those following closed heart surgery or cardiac and great vessel surgery with the use of hypothermia.

The method used was the descriptive survey. Data were obtained from medical records in one selected hospital. The desired number of charts was 50 for each of the three categories. The categories were identified by groups as follows:

Group I: patients having had cardiac surgery by a closed heart technique. All of the patients in …

Reasons For Choice Of A First Position By Graduates Of Diploma School Of Nursing, Carol Adele Craig

Loma Linda University Electronic Theses, Dissertations & Projects

It was the purpose of this study to investigate reasons for the choice of a first position by graduates from diploma programs in nursing. This included factors motivating the choice, the time of choice, and reasons for liking and disliking clinical areas. Questionnaires were mailed to 756 graduates of the class of 1961 from twenty-three representative schools. Approximately 46 percent were returned completed.

Major findings were as follows:

1. Reasons for choice of a first position rating a high percentage of total possible score on the rating scale were: to increase technical skill, 84.6 per cent; to continue learning, 81.6 …

Transistorized Circuits For Telemetry, Dominick Misciascio Jr.

Physics & Astronomy ETDs

This thesis is concerned with the telemetry of small DC signals from photomultiplier tubes. The circuitry must have a high input impedance so as not to load down the photomultiplier tube and a low output impedance which is capable of controlling the current through a small incandescent bulb. This bulb is used to illuminate a photoresistor. The output of the circuit consists of a variation of the resistance of the photoresistor. This variable resistance is conventionally converted into a variable audio frequency which is transmitted to the receiving station on a radio-frequency carrier. The output resistance must be independent of …

Prediction Of Scholastic Success For Students Of Nursing, Rachel M. Anderton

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to ascertain whether a combination of grade point averages from high school and one year of prescribed courses in a liberal arts college could be used as a tool in the prediction of scholastic success in two selected schools of nursing.

A descriptive survey of grades and test results was done on 121 students from these schools. The nursing school CPA and results from the state board test pool were used as criteria of success. Total GPA's from secondary school and college, and grades in English, science and non-science subjects were the predictors.

The …