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Some Effects Of Ph, Temperature And Light On The Production Of Zoosporagia In Saprolegnia Parasitica Coker, Philip C. Lee

Master's Theses

Pure cultures of Saprolegnia parasitica Coker were grown under varied conditions of temperature, pH, and light conditions. In liquid medium colonies were spherical with a zonal effect in the distribution of zoo sporangia. Near the limiting extremes of pH and temperature, beaded hyphal tips were found in place of normal sporangia. Teorell Universal buffer in the sporulation water inhibited production of sporangia . The pH minimum was 4.0 - 4.1, optimum 6.3 - 7 .4, ·and maximum 8.0 - 8.3. The maximum number of sporangia was produced at 15 C. Between 3.4 and 5 C, a delay in sporulation was …

Integrated Versus Departmentalized Teaching Of Eighth Grade Science At William Cullen Bryant Intermediate School, Wilson Lee Faris

Master's Theses

Scientific achievements in the past few decades have stimulated educators to investigate current content and practices in teaching science at the 8th grade level. Man at the threshold of space has become a reality as a result of achievements in science during the past decade. The most notable achievements have been the orbital space flights. Control of atomic energy, the development of powerful rockets, advancement in radar detection and communication, along with discoveries in space medicine have made it necessary to improve and strengthen the eighth grade science program in order to produce the science personnel needed for continued progress. …

Financial Statements: An Explanation For Investors, Edward N. Odom

Master's Theses

This thesis is presented in order to help investors understand the importance and meanings of financial statements. This is important because it is the foundation of our capitalistic society. When people try to create wealth from capital, they really heavily upon financial statements in order to analyze the flow of the market and the future of the economy.

Characterization And Determination Of Aldehydes By The Ultraviolet Spectral Changes Resulting From Acetal Formation, Edwin Patrick Crowell

Master's Theses

Aldehydes are a very important group of organic compounds because they have been round to contribute t the flavor and odor of many foods and plants . To the organic chemist, aldehydes are important because of their reactivity and interesting chemistry.

Because aldehydes are so prevalent in natural products and because they have . wide use in industrial and synthetic chemistry, their analytical chemistry is extensive . Despite this, there is still a need for rapid, simple, and general procedure for characterization or aldehydes that is not subject to extensive interferences.

The primary purpose of this study was to develop …

Mass Spectra Correlations And The Appearance Potentials Of The Major Tobacco Alkaloids, William Frederick Kuhn

Master's Theses

The main objectives of this investigation were three­ fold: (1) to design and fabricate a heated inlet system for the mass spectrometer; (2) to obtain the mass spectra of the major tobacco alkaloids under normal operating conditions; and ( 3) to determine the ionization potentials of the alkaloids as well as the appearance potentials of some of the major fragment ions derived from the alkaloids.

The mass spectrometer is designed to analyze only materials in the vapor state . Since some materials do not exert sufficient vapor pressure at room temperature under reduced pressure to be analyzed directly, it is …

Growth Stocks-Fact Or Fancy, Arthur Grey Staples Jr.

Master's Theses

Often in business articles the following remark may be seen: "If a company is to growing, it is retrogressing; for no business may stand still!" The sagacity of this observation with regard to individual enterprises cannot be stressed too frequently nor too strongly. Yet this truism becomes even more appropriate and apparent when applied to a nation's economy. Although this paper deals primarily with common stocks, seldom can any part of a nation;s economy move independently of the total trend. Therefore, a few explanatory remarks regarding the United States economy are in order.

Effects Of Surface Roughness On The Intensity Distribution Of Light Reflected From Aluminum Surfaces, Harvey N. Wingfield

Master's Theses

Only over the past few years have investigations of the intensity distribution of the light reflected from materials been attempted. Most of these investigations have been done by personnel at the National Bureau of Standards on matt surfaces, and acid etched black glass. It should be noted that separate investigations in the two fields, the methods of analysis of a surface's topography and the intensity distribution of reflected light from different materials have been and still are being performed. However, most correlations which exist between a surface's topography and its optical effects such as reflectance, intensity, absorption, and transmission are …

Low Temperature Infrared Cell And Its Application In Isoprene And Nitrogen Dioxide Reaction Studies, Gunars Vilcins

Master's Theses

The purpose of this research was to explore the application of low temperature infrared spectroscopy to the study of several chemical problems. In particular the following items were investigated:

1. The design, manufacture, and operation of a low temperature optical cell suitable for infrared spectroscopic studies or gas-solid samples at liquid nitrogen temperature (-196°c) and above.

2. The recording and study of the infrared spectra or nitrogen dioxide and isoprene at 25°c and at lower temperatures.

3. A preliminary study of the reaction between nitrogen dioxide and isoprene at various temperatures using infrared techniques.

In recent years infrared studies have …

The Understanding And Application Of The Arithmetical Vocabulary Of326 Fifth And Sixth Grade Students, Mary Sharon Jakicic

Master's Theses

No abstract provided.

A Study Of Inductive Reasoning Ability Among College Women, Ann Codd Forst

Master's Theses

No abstract provided.

Mrs. Gaskell's Cranford: "The Importance Of Living The Truth" As Its Unifying Theme, Donald Joseph Racky

Master's Theses

No abstract provided.

A Multidimensional Study Of The Perceived Structure Of Nations, Isabel O. Reyes

Master's Theses

No abstract provided.

A Study Of The Status Of High School Newspapers In The Virginia Public Schools, Joyce Still Gibson

Master's Theses

The school newspaper dates back over one hundred years, and it is now regarded as one of the most important activities of the modern high school.

The purpose of this study is (1) to present a brief history of journalism in the United States and in Virginia, (2) to acquaint the reader with various publications associations and the seryices they render, and (3) to present the status of high school news­ papers in the Virginia public high schools in 1961.

The writer will, in no way, attempt to discuss the technical aspects of the actual publication of a paper, but …

An Academic History Of The Class Of 1958 In A Selected Henrico County High School, Carrie Payne Barker

Master's Theses

Paced with rapid and continuous growth in the school population, the County School Board of Henrico County, Viginia, authorized in 1959 an intensive and extensive survey of the curricular offerings in its secondary Schools. The purpose of this survey was two-fold: to discover the educational needs of its youth and to determine to What extent the county high schools were meeting these needs.

Blood Oxygen Capacity Of Birds, J. R. Powell

Master's Theses

Avian blood oxygen capacity (BOC: Vol. %) was measured by a modified Roughton - Scholander syringe method with regard to parameters of body weight and sex. Two samples, collected from the Richmond vicinity, were investigated: the domestic pigeon (Columba livia Gmelin) and 25 other bird species.

Polysubstituted Piperazinethiocarboxamides, Donald W. Kreh

Master's Theses

Thiourea and its derivatives have found wide application in dyes, photographic film, elastomers, plastics and textiles. Certain thioureas possess biological properties and considerable work has been done in this area. The historical portion of this paper is divided into biological and non-biological properties of thioureas. In the literature search, primary importance was given to the biological properties of thioureas. The objective of the experimental work was to prepare compounds having potential pharmacological activity and to determine the physical constants of these compounds.

Analysis Of Scintillation Pulse Shapes For Stilbene Using Neutron And Gamma-Ray Excitation, Roland Lee Bowles

Master's Theses

In experimental nuclear physics it is often desirable to detect neutrons in the presence of a heavy gemna-ray background. This situation presents a problem since neutron counters also respond to gamma radiation. However, recently it has been shown that the scintillation counter employing an organic crystal scintillator and pulse-shape discrimination may well furnish the solution to this problem.

Determination Of A Molecular Weight Distribution For Intermediate Degradation Products Of Bovine Plasma Albumin, Sherwin M. Beck

Master's Theses

Within the last decade several important studies have been made on the large degradation of products of proteins. However, little work has been done on the intermediate degradation products. This study is concerned with the chromatographic separation of intermediate fragments from chrymotryptie hydrolysates of bovine plasma albumin and the determination of the molecular weights of the fragments. An automatic recording differential refractometer employing a differential cell of original design permitted the observation of chromatographic components as they were eluted f rom a column of Sephadex G-50. A fraction collector of original design collected 3 ml. fractions of the effluent. Three …

The Effect Of Group Phonics Drill On Non-Verbal Sub-Tests Of The Kuhlmann-Anderson Intelligence Tests, Form D., Alvaro Jimenez

Master's Theses

No abstract provided.

Coordination Of 2, 8- Bishydroxymethyl - 2, Elements Of The First Transition Series, Charles Edward O'Rear

Master's Theses

The preparation and study of 2, 8-bishydroxymethyl-2, 8-dimethyl-3, 7-diaza-1,5,9-nonanetriol with ions of the first transition series have been investigated. Spectrophotometric studies of solutions of this compound with Cu(II) and Ni(II) ions gave evidence of the formation of complexes containing one mole of ligand per metal ion throughout a wide pH range. The Cu(II) complex, the yellow colored Fe(III) complex formed at high pH, and the light blue colored Ni(II) complex have remained stable over several months. The red colored Ni(II) complex changes slowly into a more stable greenish-yellow complex. The ligand formed weaker complexes with Co(II) and Mn(II). Data from …

An Investigation Of The Analysis Of Turpentine By Gas Chromatography, John R. Wagner

Master's Theses

The development of gas chromatography and the publication of data on terpene analysis by this method has lead to this attempt to analyze turpentine by gas chromatography. The work has been limited to Gum Spirits of Turpentine and Steam Distilled Wood Turpentine since these are of chief importance and are the only types commonly retailed in small packages.

There have been three objectives:

1. To develop a method based on gas chromatography for distinguishing between Steam Distilled Wood Turpentine and Gum Spirits of Turpentine, and detection of mixtures and adulteration.

2. To identify as many components of the two turpentines …

An Inquiry Into The Absence Of Moral Advertence In A Sample Of Catholic High School Students With Specific Focus Upon Racial Prejudice, Mary Ignatius. Staley

Master's Theses

No abstract provided.

The Ethical Theory Of Charles L. Stevenson: His Problem And Solution, Leo Peter Cachat

Master's Theses

No abstract provided.

Some Aspects Of Culture Contact Between Foreign Students And Chicago Christian Family Movement Hosts, Marcel Fredericks

Master's Theses

No abstract provided.

A Study Of The Most Outstanding Problems Of Boys In The Third Year Of Three Catholic High Schools, James Joseph Merwick

Master's Theses

No abstract provided.

A Heuristic Structure For The Study Of Sociocultural Integration, Richard W. Moodey

Master's Theses

No abstract provided.

A Study Of The Curcumin Method For Boron Determination, James Edward Hardcastle

Master's Theses

The purpose of the research project, of which this thesis is a partial report, was two fold: first, to develop a method for determining small quantities of boron, and second, to develop a rapid field test for the determination of atmospheric boron. A literature survey revealed that the curcumin method is the most sensitive colorimetric method presently available for boron determination. Also, the curcumin paper test should be readily adapted to the determination of atmospheric boron.

A History Of Averett College, David Wesley Gray

Master's Theses

The first school in Danville was established by a Presbyterian minister, the Reverend Mr. J. Matthews, in the year 1802. This school lasted only twelve months and was followed by a procession of others which soon perished for one reason or another. In 1823 the Danville Male Academy was organized and became the forerunner of the modern public education system of Danville. Soon after, a number or schools were established for "females." This study is concerned with only one, the school that is now Averett College.

Gerard Manley Hopkins (1844-1889), Helen Levine Berkowitz

Master's Theses

Gerard Manley Hopkins' reputation as a poet has been almost wholly posthumous. He did not "arrive" in a critical way until the l930's when interest seemed to be centered more on the religious implications of his work than on the poetic. Today we are beginning to accept Hopkins as a major poet and to assess his virtues and limitations somewhat more objectively.

The Chelation Of Cu(Ii) With 1, 3-Bis(Tris(Hydroxymethyl)Methylamino)-2-Propanol And 1, 3-Bis (2-Hydroxyethylamino)-2-Propanol, David Andrew Jackson Jr.

Master's Theses

The chelating agent 1, 3-bis(2-hydroxyethylamino)-2-propanol dihydro­chloride was prepared and preliminary examinations of the Cu(ll) and Fe(lll) complexes were carried out spectrophotometrically. This dihydrochloride as well as 1, 3 bis(tris(hydroxymethyl)methylamino)-2-propanol dihydrochloride. were converted from the chloride salts to their corresponding ammonium bases. The conversion was carried out by passing an aqueous solution of each chloride salt through an ion exchange column containing Amberlite XE-78 resin.

Solutions of these bases were standardized for use in potentiometric titration&. Each ammonium base was titrated with standard perchloric acid at 20°C, 30°C, and 40°C. The dissociation constants. were calculated using these data. Aqueous solutions of …