Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 288361 - 288390 of 291673

Full-Text Articles in Physical Sciences and Mathematics

A Light Source To Be Used With A Vacuum Spectrograph, Roy George Woodle Jr. Jan 1951

A Light Source To Be Used With A Vacuum Spectrograph, Roy George Woodle Jr.

Masters Theses

"A grazing incidence vacuum grating spectrograph for use in the vacuum ultraviolet was designed and partially constructed by Mr. L. H. Chapin, as a research project for a Master’s Degree. This instrument is designed to photograph the region of the spectrum from 100 Å to 1000 Å. As Boyce pointed out in his exhaustive review, there is much important observational work to be done in this region.

The author of this paper has undertaken to develop a satisfactory source for the region from 100 Å to 1000 Å. This is part of a project to photograph the emission and absorption …


A Lead Sulfide Near Infrared Detection System, William V. Cummings Jr. Jan 1951

A Lead Sulfide Near Infrared Detection System, William V. Cummings Jr.

Masters Theses

"The infrared region of the spectrum is conveniently divided into the near infrared, which extends from the red end of the visible to about 25 microns, and the far infrared, which continues to an ill-defined division point of approximately 1,000 microns. The near infrared region has been further subdivided on the basis of instrumental techniques so that the particular portion of the spectrum consisting of radiations of wave length up to 3 microns has become known as the photoelectric infrared.

Several types of detection instruments have been designed and perfected for work in the photoelectric region, but new methods and …


A Correlation Function For Liquid Argon, Walter Graham Jan 1951

A Correlation Function For Liquid Argon, Walter Graham

Masters Theses

"X-ray scattering patterns have given considerable information concerning atomic distributions in matter, both crystalline and amorphous. Work on the diffraction of x-rays by crystals was begun in 1912 by Friedrich, Knipping, and Laue, and much valuable information concerning the arrangement of atoms in crystals has been supplied by this method. Diffraction of x-rays by gases was studied as early as 1911, and work in this field has given information concerning the arrangement of atoms in molecules and electron distribution in atoms. Work on the diffraction of x-rays by liquids was begun by Friedrich who obtained diffraction patterns of Canada Balsam, …


Geology And Mineralization Of The Jefferson Mine, Hardin County, Illinois, Robert Joe Cronk Jan 1951

Geology And Mineralization Of The Jefferson Mine, Hardin County, Illinois, Robert Joe Cronk

Masters Theses

"Purpose of the Investigation: The geology of the Jefferson Mine was mapped to determine the relationship of the two fluorspar veins exposed on the 260-foot level to the single vein on the 200-foot level to study the mineralogy and paragenesis of the ore, and to gain any other information that would lead to a better understanding of the fluorspar deposits"--Introduction, page 1.


The Detection And Determination Of Antimony By Means Of Rhodamine B., William Cornelius Hamilton Jan 1951

The Detection And Determination Of Antimony By Means Of Rhodamine B., William Cornelius Hamilton

LSU Historical Dissertations and Theses

No abstract provided.


A Spectral Study Of The Monodeuterated Isomers Of Bromobenzene., James Wallace Meadows Jan 1951

A Spectral Study Of The Monodeuterated Isomers Of Bromobenzene., James Wallace Meadows

LSU Historical Dissertations and Theses

No abstract provided.


Chromatographic Studies., Patrick Henry Monaghan Jan 1951

Chromatographic Studies., Patrick Henry Monaghan

LSU Historical Dissertations and Theses

No abstract provided.


A Study Of Some Factors Affecting Chromatographic Adsorption., Patterson B. Moseley Jan 1951

A Study Of Some Factors Affecting Chromatographic Adsorption., Patterson B. Moseley

LSU Historical Dissertations and Theses

No abstract provided.


A Kinetic Study Of The Autocatalytic Reaction Between Aniline And Benzoic-Anhydride In A Non-Polar Solvent., Jack Warren Knight Jan 1951

A Kinetic Study Of The Autocatalytic Reaction Between Aniline And Benzoic-Anhydride In A Non-Polar Solvent., Jack Warren Knight

LSU Historical Dissertations and Theses

No abstract provided.


Some Applications Of Chromatography To Specific Problems., Marvin Lee Owens Jan 1951

Some Applications Of Chromatography To Specific Problems., Marvin Lee Owens

LSU Historical Dissertations and Theses

No abstract provided.


Studies In Analytical Chemistry: I. New Methods For The Determination Of Ash In Petroleum Crudes. Ii. Studies In Oscillographic Polarography., Gerald Perkins Jan 1951

Studies In Analytical Chemistry: I. New Methods For The Determination Of Ash In Petroleum Crudes. Ii. Studies In Oscillographic Polarography., Gerald Perkins

LSU Historical Dissertations and Theses

No abstract provided.


X-Ray Studies Of Cadmium Selenide Transition Layers In Dry Disc Rectifiers., Paul B. Pickar Jan 1951

X-Ray Studies Of Cadmium Selenide Transition Layers In Dry Disc Rectifiers., Paul B. Pickar

LSU Historical Dissertations and Theses

No abstract provided.


Polarization In Dielectric Liquids., Charlotte Zihlman Lemay Jan 1951

Polarization In Dielectric Liquids., Charlotte Zihlman Lemay

LSU Historical Dissertations and Theses

No abstract provided.


Geology Of Ouachita Parish, Louisiana., Kia Kang Wang Jan 1951

Geology Of Ouachita Parish, Louisiana., Kia Kang Wang

LSU Historical Dissertations and Theses

No abstract provided.


Recent Foraminiferal Faunules From The Louisiana Gulf Coast., Harold Veral Andersen Jan 1951

Recent Foraminiferal Faunules From The Louisiana Gulf Coast., Harold Veral Andersen

LSU Historical Dissertations and Theses

No abstract provided.


Mudlumps At The Mouths Of The Mississippi River., James P. Morgan Jan 1951

Mudlumps At The Mouths Of The Mississippi River., James P. Morgan

LSU Historical Dissertations and Theses

No abstract provided.


An Analysis Of The Oil Of Echinocystis Fabacea Seeds, Francis Warren Sayre Jan 1951

An Analysis Of The Oil Of Echinocystis Fabacea Seeds, Francis Warren Sayre

University of the Pacific Theses and Dissertations

Echinocystis fabaceae, commonly called “Man Root” because of the peculiar shape of the root, not unlike that of a man, finds abundant occurrence in the central valleys of California. This plant, a member of the wild cucumber family, is of particular interest because it is an oilseed plant. The variety agrestis is especially common around Stockton. Other varieties are found throughout the Sacramento and San Joaquin Valleys and in the Coast Range Mountains.

Oils have played an important part throughout history and are continuing to do so in our present economy. An investigation of the oils of Echinocystis fabaceae seeds …


Intermediate Compounds In The Synthesis Of Lignin, Paul Spencer Gakle Jan 1951

Intermediate Compounds In The Synthesis Of Lignin, Paul Spencer Gakle

University of the Pacific Theses and Dissertations

The synthesis of a keto-aldehyde from salicylaldehyde and benzaldehyde was attempted. The first step was to protect the carbonyl with a non-reactive group.

The bisulfite addition product and the 2,4-dinitrophenylhydrazone of salicylaldehyde were prepared. The methyl acetal, the sodium bisulfite addition product, and the 2,4-dinitrophenylhydrazone of benzaldehyde were also prepared.

The bisulfite addition of both aldehydes was found to be too unstable in the presence of aldehyde was recovered in each case. The methyl acetyl chloride also decomposed. This necessitated finding a more stable group to protect the aldehyde.

The 2,4-dinitrophenylhydrazone was unaffected by treatment with anhydrous aluminum chloride in …


The Polarization Of Zodiacal Light, Maynard Cowan Jan 1951

The Polarization Of Zodiacal Light, Maynard Cowan

Physics & Astronomy ETDs

It was the purpose of this study, (1) to measure the polarization of zodiacal light, (2) to investigate the orientation of the plane of polarization, and (3) to deduce from results obtained information concerning the origin of zodiacal light.


Glacial Geology Of Wabash County, Indiana, William J. Wayne, William D. Thornbury Jan 1951

Glacial Geology Of Wabash County, Indiana, William J. Wayne, William D. Thornbury

Department of Earth and Atmospheric Sciences: Faculty Publications

Most of the topographic features of Wabash County are of glacial origin or are glacial deposits eroded by postglacial streams. Shales, limestones, and dolomites, all Silurian, are exposed only along some of the deeper valleys. Four major rivers and six smaller streams in Wabash County flow in glacial sluiceways. Only the Eel and Wabash sluiceways carried large quantities of melt-water. The Eel River valley train occupies an interlobate position, and the Wabash Valley bears evidence of its roles as a sluiceway and as an outlet for glacial Lake Maumee in late Cary time. Three topographic areas comprise the upland part …


United States Patent: Antenna Guy Fitting, Robert Katz Dec 1950

United States Patent: Antenna Guy Fitting, Robert Katz

Robert Katz Publications

The invention to be hereinafter described relates to coupling devices for the attaching of fixed wire antenna to aircraft.

Heretofore, it has been the general practice to make connections between the fixed wire antenna and aircraft by wrapping the antenna wire about a thimble or like device, as in making a splice.

This practice resulted in a number of sharp points and rough surfaces whose susceptibility to corona discharge is well known. This corona discharge resulted in bad weather extremely difficult or dangerous due to interruption of radio navigation and communication services.

The present invention is designed to overcome the …


The Monadnock Volume 25, Number 1, December 1950, Clark University Geographical Society Dec 1950

The Monadnock Volume 25, Number 1, December 1950, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 25, Issue 1 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).


Application Of X-Ray Technique To The Detection Of Internal Insect Infestation Of Grain, Max Milner, Milford R. Lee, Robert Katz Dec 1950

Application Of X-Ray Technique To The Detection Of Internal Insect Infestation Of Grain, Max Milner, Milford R. Lee, Robert Katz

Robert Katz Publications

During the course of a comprehensive investigation of methods for the determination of internal insect infestation in commercial wheat, radiographic techniques have been developed at this station which provide satisfactory delineation of internal infestation. We have applied these techniques to the observation of the growth of such insects as granary weevil, Sitophilus granaries L., and rice weevil, Sitophilus oryza L., from the hatching of the egg within the kernel through larval and pupal growth to emergence as a mature insect. Although considerable detail is always lost in the reproduction of radiographs during engraving and printing, the accompanying figures (1, …


Test 454: Dodge Power Wagon T137, Nebraska Tractor Test Lab Nov 1950

Test 454: Dodge Power Wagon T137, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 454: Dodge Power Wagon T137, Nebraska Tractor Test Lab Nov 1950

Test 454: Dodge Power Wagon T137, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary. All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University. Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …


The Kinetics Of The Exchange Between Sn(Ii) And Sn(Iv) In Absolute Alcohol, E. Gerald Meyer Nov 1950

The Kinetics Of The Exchange Between Sn(Ii) And Sn(Iv) In Absolute Alcohol, E. Gerald Meyer

Chemistry and Chemical Biology ETDs

The radiochemical exchange reaction may in general be written AX+BX= +BX where Xrepresents a radioactive atom of X. The species AX and AXare assumed to be chemically identical as are the species BX and BX. This assumption introduces no appreciable error even when working with atoms having an atomic weight as low as fourteen.


Lagoon Data (1950), Walter A. Lawrance Nov 1950

Lagoon Data (1950), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Supplement To Odor Report (1950), Walter A. Lawrance Nov 1950

Supplement To Odor Report (1950), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Odor Report (1950), Walter Lawrance Nov 1950

Odor Report (1950), Walter Lawrance

Walter Lawrance Papers

No abstract provided.


Sulphite Pulp Production (1950), Walter A. Lawrance Nov 1950

Sulphite Pulp Production (1950), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.