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A Comparison Of Some Numerical Integration Programs, J. Casaletto, M. Pickett, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

A Comparison Of The Effects Of Fluoride And Chloride Ions Upon The Activity Of Yeast Alcohol Dehydrogenase, Ellen J. Hannan

Dissertations and Theses

Very little is known about the effect of hydrofluoric acid and of the fluoride ion on enzyme systems. The purpose of this work was to determine the effect of hydrofluoric acid and of the fluoride ion on the enzyme, yeast alcohol dehydrogenase and to distinguish between the effect of the fluoride ion and of hydrofluoric acid. The rate of the enzyme reaction was followed spectrophotometrically at 340 mμ on the Cary 14 Model spectrophotometer according to the method of Racker. The data taken from the instrument recordings were plotted on two types of graphs, the Lineweaver-Burk plot and the Hanes …

Directional Correlation Of The 346-136 Kev Gamma-Gamma Cascade In Ta¹⁸¹, Robert Allan Wilson

Dissertations and Theses

The directional correlation of the 346-136 Kev gamma-gamma cascade in Ta¹⁸¹ was measured using the delayed coincidence method with a source of Hf¹⁸¹ in 27 N HF. The contributions to the composite delayed coincidence spectrum of the interfering 133-482 Kev and 133-346 Kev cascades were removed by the subtraction from this spectrum of appropriate 133-482 Kev pure delayed coincidence data. The extracted 346-136 Kev coincidence data then yielded the correlation coefficients A₂₂ = 0.190±0.011 and A₄₄. = -0.025±0.024 that are consistent with the established spin sequence 5/2(E2)9/2(M1 + E2)7/2 and with an admixture of 16.2%±1. 2% E2 radiation in the …

The Monte Carlo Method Applied To An Estimation Of Delayed Neutron Response, Garland David Turner

Physics & Astronomy ETDs

An experimental program has been undertaken at Los Alamos Scientific Laboratory to study delayed neutron effects. As a part of this program, experiments were conducted with thin disks of various fissionable materials to measure the delayed neutron response to a pulse of high-energy neutrons. In support of the experiments, calculations were made with a computer program which solves the Boltzmann transport equation by finite difference methods. Difficulties with the calculations led to an analysis showing that correct treatment of neutrons moving parallel to the faces of the disk was vital to the success of the calculation. As an extension of …

High-Field Studies Of Band Ferromagnetism In Fe And Ni By Mössbauer And Magnetic Moment Measurements, S. Foner, A. J. Freeman, N. A. Blum, Richard B. Frankel, E. J. Mcniff, Jr., H. C. Praddaude

Physics

High-field susceptibility χ_HF in Fe and Ni (at 4.2, 77, and 300°K) and high-field Mössbauer studies in Fe at 4.2°K are reported and related to the band structure of Fe and Ni and to band models of ferromagnetism. The Mössbauer effect was employed to measure the change in the hyperfine field H_n at the ⁵⁷Fe nucleus with application of an external field. Assuming H_n to be proportional to the bulk magnetization, a microscopic equivalent to χ_HF is obtained. We also show how the high-field data may be used alternatively to determine the nuclear g factor. …

The Convergence Of Numerical Solutions Of Hydrodynamic Shock Problems., Darrell Lee Hicks

Mathematics & Statistics ETDs

In 1944 von Neumann Conjectures that only averages of numerical solutions, produced by a discrete scheme he had proposed to solve hydrodynamic shock problems, would converge as the meshes were refined. The hydrodynamic shock problem is defined here as: Find a solution, allowing discontinuous solutions, to the three conservation laws, the increasing-entropy law, and the ideal-gas law when giben physically acceptable initial and boundary values. For discrete schemes similar to von Neumann’s, it is verified that the averages do converge and it appears that von Neumann was also correct in surmising that only the averages converge. A smoothing device named …

The Ias Bulletin, V3n3, May 1969, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- From the Editor
--- Attendance at 81st Session
--- Committee on Ecological Disturbances Continued
--- 1970 Plans Already Underway
--- New Corporate Member
--- Note to Visiting Scientists
--- Another Fall Articulation Conference Planned
--- ISTS Regional Meetings to be Featured in Science Education News
--- New Sections Being Considered
--- Members Urged to Support the Academy through Contributions
--- Fiscal Year Changed
--- Status of the Constitution Revision
--- Nomination of Fellows is in Order
--- What some of the Other State Academies are Doing
--- Newsletter to Have New Format
--- Our New President …

Some Aspects Of Geochemistry And Mineralogy Of Bear Lake Sediments, Utah-Idaho, Dean F. Davidson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bear Lake is located in southeastern Idaho and north-central Utah. The lake has a maximum altitude of 5923 feet and an area of approximately 110 square miles. Surrounding the lake are carbonates, shales, and sandstones of lower Paleozoic through middle Mesozoic ages. The many streams and springs that originate in these rocks are probably the main contributors to the chemistry of the lake. Water from Bear River, which flows into the north end of the lake, also contributes to its chemistry.

Quartz, aragonite, dolomite, calcite and clay minerals are the main minerals in the lake-bottom sediments. Quartz is generally the …

Chemical Effects Of Beta Decay Of Molybdenum-99-Labeled Molybdate, Jane A. Seck

Student Scholarship

This research investigates the chemical consequences of the beta decay of molybdenum-99 when in the form of the molybdate ion, specifically focusing on how these effects impact the efficiency of technetium-99m generators used in medical diagnostics. Technetium-99m is a vital radiopharmaceutical for tumor localization and brain scanning due to its short half-life and ideal gamma emission energy. However, clinical generators often fail to yield the theoretically calculated maximum amount of technetium, typically eluting only 60 to 80 percent of the activity. This study hypothesizes that the recoil energy produced during beta decay is sufficient to rupture metal-oxygen bonds, leading to …

The Thermodynamics Of Transition Metal Chelation In Dilute Aqueous Solution.|Ni.|Pthe Thermodynamics Of Interaction Of Serinate Ion With Divalent Co, Ni, Cu, Zn, And Cd Ions In Aqueous Solution.|Nii.|Pthe Calorimetric Standardization Of Dilute Ferrous Ion Solutions For Use In Determining 2,2'-Bipyridine, Joseph Willard Richards

Theses and Dissertations

Calorimetrically determined ΔH° values are given for the stepwise formation of chelate species between serinate ion and the divalent metal ions of Co, Ni, Cu, Zn, and Cd. These values of ΔH° are compared with those reported in the literature and were combined with values of ΔG° (log K) found in the literature to calculate values of ΔS°. These values of ΔG° and ΔS° are listed also. A new method of standardizing dilute ferrous ion solutions is reported. This procedure makes use of the thermometric titration technique to detect the equivalence point for the reaction of K_2Cr_2O_7 with ferrous ion. …

A Mathematical Problem Solving Language And Its Interpreter, Lawrence R. Symes

Department of Computer Science Technical Reports

No abstract provided.

The Practical Solutions And Computer Program Of Two Statistical Problems In Simulation, Yee Fong

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

In the last several years monte-carlo simulation has become a major tool for the analysis of complex queuing systems which are no readily amenable to analysis by conventional mathematical methods. By a complex queueing system is mean a system composed of, physically or by analogy, a network of stations or servers with traffic units moving through all or some of the servers, into the system and out or around within the system. A traffic unit desiring service by a server may either have to enter a queue first or may be served immediately. Such systems have been simulated often with …

Computer Programs For Incomplete Block Designs, Fred Miller

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

In most disciplines where research is involved, there exists an occasional problem of having minimal facilities and/or funds for conducting experiments. This often necessitates the use of designs known as incomplete block designs.

Since the calculations needed to provide an appropriate statistical analysis are somewhat tedious, particularJ..y in the larger designs, it is advantageous to have computer programs to do the necessary calculations.

There are several computer programs at Utah State University written in Fortran II language with Forcom subroutines that perform the analyses for incomplete block designs. These programs, for the most part, were authored by Justus Seely and …

Soils Of Nebraska, John A. Elder

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

A Study Of The Sidereal Diurnal Variations Of Cosmic Rays Underground., Albert Brunsting

Physics & Astronomy ETDs

The sidereal diurnal variation of cosmic rays has been measured using underground (40 m.w.e.) meson telescopes located near Albuquerque, New Mexico (35.20°N, 106.41°w) and at Chacaltaya, Bolivia (16.31°s, 68.15°w). Each ofthe two locations has telescopes which scan the vertical and four inclined directions.

Two and three complete years were used for the tele­scopes at the Bolivia and New Mexico locations respectively. The average solar diurnal variations were calculated for each telescope for each month. Based on these monthly averages, the sidereal diurnal variations were computed. A correction was made in the analysis for any yearly modulation of the solar diunal …

Remote Sensing Of Sea Surface Temperature, P. K. Rao, Alan E. Strong, E. P. Mcclain, W. R. Curtis

Space Congress® Proceedings

A thorough knowledge of the distribution of sea surface temperature over large areas is important in the geophysical and marine sciences. This enables one to understand certain atmospheric and oceanic processes, in the detection and monitoring of ocean currents, upwelling zones and other circulation systems. Unfortunately, a true and complete picture of the sea surface temperature distribution has not been available due to observational difficulties. Sea surface temperature charts that are available now are based on commercial ship reports and on data from research cruises. Comprehensive survey of this feature by means of sensors carried in aircraft, ships or any …

Knudsen- And Torsion- Effusion Measurements Of The Vapor Pressure Of Manganese(Ii) Fluoride, Walter Clayton Hitchingham

Masters Theses

No abstract provided.

Elastic Scattering Of 1.33 Mev Gamma Rays From Lead, William Jack Merrow

Masters Theses

No abstract provided.

Fabrication Of Lithium Drifted Germanium Detectors Of Planar Structures, Khin M. Yin

Masters Theses

No abstract provided.

Elastic Scattering Of 1.33 Mev Gamma Rays From Uranium, David Rood Schwandt

Masters Theses

No abstract provided.

Lattice Dynamics And Second-Order Raman Spectrum Of Naf, John R. Hardy, A. M. Karo, I. W. Morrison, C. T. Sennett, J. P. Russell

John R. Hardy Papers

The second-order Raman spectrum of NaF has been measured using an argon laser source. For a light beam incident along the [010] direction, polarized along the [001] direction, and viewed along the [100] direction, the scattered radiation is almost completely polarized. It is shown theoretically that it is possible to account for the polarization and the detailed shape of the observed spectrum within the experimental resolution using a Raman polarizability tensor whose second derivatives with respect to nuclear displacements depend only on the positions of first neighbors in the crystal, provided one uses the phonon frequencies derived from a deformation …

The Ias Bulletin, V3n2, March 1969, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Constitution Revision
--- Academy Conference to Conduct Editors' Workshop
--- Features of the Eighty-First Session April 18, 19 at University of Northern Iowa, Cedar Falls
--- Motel Information for the April Meeting
--- Reservations Required for Academy Banquet
--- Section Program Highlights
--- Revised Constitution 1969
--- Revised Bylaws

Meteorological Effects On Cosmic Rays At Albuquerque, New Mexico., David Nason Glidden

Physics & Astronomy ETDs

Ground-based observations of cosmic-ray intensity have the disadvantage of being more sensitive to variations of atmospheric temperature and pressure than to the more interesting variations in the primary cosmic radiation. It is, therefore, imperative to correct the recorded cosmic-ray intensity for variations of atmospheric origin before studies can be made of the smaller variations of the primary cosmic ray intensity.

In this thesis an attempt has been made to remove the variations of atmospheric origin from the cosmic-ray intensity recorded simultaneously by a neutron monitor and a meson telescope located at Albuquerque, New Mexico. It was found that the neutron …

Quasifree Knockout Of Deuterons In The ⁶Li(Α,Αd)⁴He Reaction At 23.6 Mev, K. Bähr, T. Becker, Oleksa-Myron Bilaniuk, R. Jahr

Physics & Astronomy Faculty Works

α−d correlations in quasi-elastic scattering of 23.6-MeV α particles on the deuteron cluster of the ⁶Li target were measured in and off the principal reaction plane. Despite the low c.m. energy of 14.2 MeV, the impulse approximation provides a reasonable description of the quasifree process. Computations were based on the asymptotic α−d S-state wave function and on the cluster-model wave function of ⁶Li. Insensitivity of the fits to the details of the ⁶Li cluster-model wave function indicates an extreme surface reaction mechanism. The full width at half-maximum of the spectator momentum distribution was found to be 48±6 MeV/c. By comparing …

A Polyalgorithm For The Automatic Solution Of Nonlinear Equations, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Evaluation Of Napss Expression Involving Polyalgorithms, Functions, Recursion, And Untyped Variables, Lawrence R. Symes

Department of Computer Science Technical Reports

No abstract provided.

Absence Of Induced Magnetic Fields At Gd Nuclei In Gdfe2, H. Maletta, Richard B. Frankel, W. Henning, R. L. Mössbauer

Physics

Measurements of the magnetic hyperfine field at ¹¹⁵Gd in GdFe₂ in external magnetic fields reveal the absence of induced magnetic fields, in disagreement with other reported data.

Application Of The Method Of Lattice Statics To Vacancies In Na, K, Rb, And Cs, John W. Flocken, John R. Hardy

John R. Hardy Papers

We have calculated the lattice distortion produced by a single vacancy in Na, K, Rb, and Cs. The calculations have been carried out using the technique of lattice statics, which is based on the Fourier transformation of the direct-space equilibrium equations, making consistent use of discrete lattice theory. Three distinct types of potential have been used to describe the interactions between the host atoms. The first of these applies only to sodium, and contains an ion-electron-ion term derived from the measured phonon dispersion curves. The second applies only to potassium, and has been similarly obtained. The third is based on …

Capitol Reef Historical Survey And Base Map, Lenard E. Brown

Elusive Documents

No abstract provided.

Conversion Pinyon-Junifer Woodland To Grassland, Richard S. Aro

Elusive Documents

No abstract provided.