Physical Sciences and Mathematics Commons^™

On The Scintillation Of Stars., Mary Elizabeth Prince Phelan

Physics & Astronomy ETDs

The nature of stellar scintillation is important to the astronomer and to the atmospheric physicist, but little quantitative work has been done in this area. This paper describes the results of an objective study of stellar scintillation. The principle measurements were concerned with a determination of the scintillation pattern and rate of a star which was observed simultaneously in two photoelectric telescopes whose distance could be varied. Other items measured included variations in rate of scintillation with: stellar magnitude, stellar altitude, atmospheric changes, and time of evening.

Measuring Spin-Lattice Relaxation Times With A Super-Regenerative Spectrometer, Alfred C. Rester Jr.

Physics & Astronomy ETDs

Nuclear quadrupole resonance is a branch of radio frequency spectroscopy which was discovered in 1950 by Dehmelt and Kruger. (1). It is concerned with radio-frequency magnetic resonance absorption in molecular crystals. It results from the interaction of the nuclear quadrupole moment with the electric field gradient of the molecule charge cloud surrounding the nucleus. Different orientations of the nuclear axis relative to the field axis correspond to different energy levels. Resonance absorption takes place when an applied electromagnetic field cause transitions from one energy level to a higher one.

A Gated Digital Integrator And Its Application To The Measurement Of Nuclear Quadrupole Relaxation Times, Jack Curtis Wilcott

Physics & Astronomy ETDs

The thesis is divided into two sections. The first section discusses nuclear quadrupole resonance, relaxation times, experimental procedure, and apparatus, and some data is given. The second section describes the gated digital integrator in detail. The system uses the boxcar integrator technique for analyzing periodic waveforms obscured by noise. The average voltage of a small segment of the waveform is obtained by repeated sampling and is stored in a digital up-down counter. A digital-to-analog converter converts the stored digital number into a voltage to run a recording meter and to provide a feedback signal to compare with the input signal. …

Ultrasonic Suspension Of Liquid Droplets For Light Scattering Studies, David L. Cutchin

Physics & Astronomy ETDs

The construction and operation of an ultrasonic liquid droplet suspension device are described. The problem of generating intense sonic waves by matching the sonic transducer components is investigated. There is a description and analysis of a light scattering experiment performed on a suspended water droplet. The moat prominent characteristic of the scattered light was a rapid (10 to 100 cycles per second) time fluctuation in intensity. The variation in scattering cross section with droplet diameter predicted by the Mie theory and droplet shape oscillations are investigated as possible mechanisms producing the fluctuations.

Test 901: Massey-Ferguson Mf 150 (Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …

An Investigation Of Neutron Collimators And Their Application In Neutron Radiography., Roger A. Morris

Physics & Astronomy ETDs

One of the most important diagnostic tools in the fields of medicine and industry is the use of penetrating radiation to detect flaws, inhomogeneities, and abnormal conditions within an object without permanently changing or destroying the object being inspected. The equipment, technique, and type of radiation employed vary widely between hospital, shop, or laboratory depending upon the particular conditions that are encountered and the results that are expected. Probably the most widely used radiation types are X-rays or gamma-rays and their applications in the above-mentioned fields need no further description. However, beams of thermal neutrons are becoming more and more …

Maden Tetki̇k Ve Arama Ensti̇tüsü Yayinlari, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.

Avrupa'da Tabi̇i̇ Gaz İsti̇hsali̇ni̇n Bugünkü Durumu Hakkinda, Muammer Çeti̇nçeli̇k

Bulletin of the Mineral Research and Exploration

No abstract provided.

Extraction Des Spores Et Grains De Pollen A Partir De Divers Sediments, R. Coquel, S. Lobozi̇ak, E. Nakoman

Bulletin of the Mineral Research and Exploration

No abstract provided.

Geology Of Mianeh District Of Northwestern Iran, F. A. Afshar

Bulletin of the Mineral Research and Exploration

No abstract provided.

Über Das Alter Der Kohlenvorkommen Zwisghen Di̇vri̇ği̇ Und Oltu (Ne - Anatolien), Hartmann Wedding

Bulletin of the Mineral Research and Exploration

No abstract provided.

Die Ausgangsgesteine Für Die Bauxitbildung, Jobst Wippern

Bulletin of the Mineral Research and Exploration

No abstract provided.

The Geology Of Ahlat-Adi̇lcevaz Area (North Of Lake Van), Erdoğan Demi̇rtaşli, Carlo Pisoni

Bulletin of the Mineral Research and Exploration

No abstract provided.

Precisions Sur Le Metamorphisme Du Massif De Menderes Le Long De Sa Bordure Meridionale (Sw De La Turquie), P. De Gragiansky

Bulletin of the Mineral Research and Exploration

No abstract provided.

Note Preliminaire Sur Le Silurien D'İstanbul, Fuat Baykal, Orhan Kaya

Bulletin of the Mineral Research and Exploration

No abstract provided.

Minerals And Plant Growth

Green Revolution

No abstract provided.

Decision Problems, Lowell Anderson

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

From an intuitive point of view the notion of effective procedure consists of a set of rules or instructions that enables one, in a finite number of steps and in a purely mechanical way, to answer yes or no to any one of a given class of questions. This procedure requires no intelligence to carry out the instructions and, in fact, it is con­ceivable that some mechanical contrivance may be constructed to carry out these instructions. Should such an effective procedure exist, that answers either yes or no, then the group of problems in question is said to be effectively …

Axiomatic Set Theory, Ronald P. Smit

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

An analysis of the well known paradoxes found in intuitive set theory has led to the reconstruction of set theory by axiomatic means. This exposition is devoted to Zermelo-Fraenkel set theory with some changes made by Suppes.

The first order predicate calculus is presupposed. In addition to the usual quantifiers admitted, a unique existential quantifier is used. The primitive notions of the set theory are the empty set and the two place membership predicate.

Fredholm Solution Of Linear Integral Equations, Dewey F. Furness

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

An integral equation of the form

ζ(x) - λ∫ K(x, s) ζ(s) ds = f(x) a ≤ x ≤ b

is called a Fredholm equation. By the method of successive approximations a solution can be obtained if the parameter λ is sufficiently small. If the kernel, K (x, s), is degenerate then a solution can be obtained by reducing it to a system of linear algebraic equations. In the general case the kernel is represented as an infinite Fourier Series. With this representation the solution is obtained by combining the two methods mentioned. The solution is the solution of two …

Laplace, Finite Fourier Sine And Cosine, Transformations, Jan Eugene Wynn

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

The Laplace and finite Fourier sine transforms can be used to solve certain boundary value problems. Also the Laplace transform is a useful took in solving some integral and integrodifferential equations. This report is composed of transform solutions of seventeen such applied problems, while the author's first report is focused towards the theoretical aspect of these transforms.

Several different types of problems are solved in this report. Among these are Bessel's classical differential equation of index n, two electrical circuit problems, a beam problem, a vibrating string problem, a heat flow problem, and a temperature gradient problem.

One of the …

Spectral Analysis Of Time-Series Associated With Control Systems, Karl Leland Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The progress of science is based to a large degree on experimentation. The scientist, engineer, or researcher is usually interested in the results of a single experiment only to the extent that he hopes to generalize the results to a class of similar experiments associated with an underlying phenomenon. The process by which this is done is called inductive inference and is always subject to uncertainty. The science of statistical inference can be used to make inductive inferences for which the degree of uncertainty can be measure in terms of probability. A second type of inference called deductive inference is …

Paleozic Stratigraphy Of The James Peak Quadrangle, Utah, Harley D. King

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

General Statement

The James Peak quadrangle is a topographic map unit of the Geological Survey of the U. S. Department of Interior (Plate 1). It covers 7 1/2 minutes of latitude and longitude at a scale of 1:24, 000 or 1 inch to 2, 000 feet. It is bounded by lat 41°22'30" N. and lat 41°30' N. and long 111°45' W. and long 111 °52 '30" W The quadrangle includes 56 square miles and has maximum relief of about 4, 300 feet.

The James Peak quadrangle is located in northern Utah between the Wasatch Range on the west and the …

Factors Which Deterred Twenty-Three Selected Patients From Utilizing Public Health Nursing Services, Lora Wood Welch

Loma Linda University Electronic Theses, Dissertations & Projects

A study was conducted to identify factors which deterred twenty-three selected epileptic patients from utilizing public health nursing services. The literature was reviewed in areas relating to factors which may contribute to or deter patients use of clinic or public health services.

The descriptive survey approach employing an interview guide was used. Data on the guide were classified in two areas: (1) personal characteristics and (2) participant responses. The participant responses were further categorized according to (1) perception of the public health department and public health nursing services, (2) perception of the needs of the epileptic patient and his parents, …

Properties Of Chlorophyll Derivatives Bonded To Polymers, Richard Grant Jensen

Theses and Dissertations

Two types of water-soluble complexes of chlorophyll a with organic polymers have been investigated: chlorophyll a coordinately bonded to poly 4-vinylpyridine and a chlorophyll derivative, Mg-chlorin e_6 phytyl methyl ester, covalently bonded to GANTREZ AN (poly (methyl vinyl ether/maleic anhydride) ). The first complex was observed upon dissolving chlorophyll a and poly 4-vinylpyridine in aqueous ethanol solutions. The Mg-chlorin e_6 diester-GANTREZ AN complex (chlorophyll a/polymer) was made by aminolysing the chlorophyll ring V with 1, 6-hexanediamine to give an intermediate product, Mg-chlorin e_6 -6-N-(6' -aminohexyl) carboxamide, phytyl methyl ester. This was attached to GANTREZ AN by linkage of the 6'-amine …

Effect Of Calcium Availability On Alfalfa Grown In Calcareous High Sodium Soils, Harry Irving Nightingale

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In soil science we shall always be confronted with reactions in soils that involve Ca. Early recognition of this led to experimentation in this area. Due to the fact that Ca deficiency is most common in acid soils, the majority of the experimentation has in the past been largely confined to acid soils and their soil-Ca-plant relationships. There has been relatively little research done with Ca and its availability problems associated with alkaline or sodic soils.

Boolean Space, Tzeng-Hsiang Sun

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

M. H. A. Stone showed in 1937 and subsequently that many interesting and important results of general topology involve latices and Boolean rings. This type of result forms the substance of this thesis.

Theorem 4, page 11, states that for any r ≠ 0 in a Boolean ring, there exists a homomorphism h into I₂ , (the field of integers modulo 2), such that h(r) = 1.

Theorem 3, page 6, states that any subring of a characteristic ring of a Boolean space X is the whole ring if it has the two points property (that is, given x, …

Geology Of The Monte Cristo Area, Bear River Range, Utah, Robert B. Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Monte Cristo area is a 7 1/2-minute quadrangle located in the southeastern. part of the Bear River Range, northern Utah. It is within the Middle Rocky Mountain province and is 10 miles east of the Basin and Range province. Previous to this investigation little was known about the detailed geology of the area except for a reconnaissance study and general geologic map of the Cache County part included in the Geologic Atlas of Utah, Cache County, published by Williams (1958).

The purposes of this investigation were as follows: (1) to determine the formations present in the area and their …

Barypact Topological Spaces, Bradley Y. Maughan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Recently, Kimber [3] has discovered a general class of topological spaces, the members of which are termed barypact spaces, that includes the compact topological spaces. This class is distinct from the set of all compact topological spaces, but its members possess many of the useful properties associates with compactness. As a consequence, several standard compactness theorems become special cases of corresponding theorems in a more general setting and the techniques of proof applied to these extensions provide new, and sometimes remarkably simple, proofs of the very theorems they generalize. The purpose of this paper is to extend to this …

Formulation Of Error Structures Under Non-Orthogonal Situations, Justus Frandsen Seely

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To gain an appreciation or understanding for the title of this study we must first understand what the phrases "non-orthogonal" and "error structure" mean. With an understanding of these terms the title of this study will become clear.

To obtain an understanding of the term non-orthogonal, consider an experiment where differing treatments are applied to groups of experi­mental units in order to observe the differential treatment responses. If an equal number of experimental units are in each group, then we say we have an orthogonal situation. This means that when equal numbers exist among the experimental units, that the variability …

Error Structure Of Randomized Design Under Background Correlation With A Missing Value, Tseng-Chi Chang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The analysis of variance technique is probably the most popular statistical technique used for testing hypotheses and estimating parameters. Eisenhart (12) presents two classes of problems solvable by the analysis of variance and the assumption underlying each class. Cochran (9) lists the assumptions and also discusses the consequences when these assumptions are not met. It is evident that if all the assumptions are not satisfied, the confidence placed in any result obtained in this manner is adversly affected to varying degrees according to the extent of the violation.