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Articles 40681 - 40710 of 40779
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The Preparation Of Long Chain Secondary Aliphatic Amines, Robert Fay Betts
The Preparation Of Long Chain Secondary Aliphatic Amines, Robert Fay Betts
Bachelors’ Theses
As organic chemistry has always seemed to be the most interesting study to me, I have chosen this particular branch or chemistry for a thesis.
I found through correspondence with some of the larger petroleum companies in the United States that the preparation of long chain secondary amines would constitute a good thesis topic because these compounds have begun to assume importance as additives to lubricating oil.
Studies Of Antimony Occurrence With Special Relation To Its Effective Extraction, San Jose Antimony Mines, Wadley, San Luis Potosi, Mexico, J. C. Archibald Jr.
Studies Of Antimony Occurrence With Special Relation To Its Effective Extraction, San Jose Antimony Mines, Wadley, San Luis Potosi, Mexico, J. C. Archibald Jr.
Bachelors Theses and Reports, 1928 - 1970
The mines at San Jose which are within the Wadley unit are the largest antimony mines in Mexico. These mines produce more than half of the antimony produced by the company from its mining operations. Since the time of the author's connection with the company, a number of changes have been made in planning of development work, handling of labor, methods of mine development, cost improvement, and other problems inherent in the successful guidance of an operation.
Attempted Separation Of Similar Ionic Species By Means Of Paper Chromatography, Alexander Beresniewicz
Attempted Separation Of Similar Ionic Species By Means Of Paper Chromatography, Alexander Beresniewicz
Bachelors’ Theses
Chromatosraphy is a comparatively new analytical method which deals mainly with the separation of similar organic compounds. Until now, only a few papers have been published on inorganic paper chromatography. Up to the present time no investigator has made a serious attempt to organize and systematize the large amount of available information in order to clarify the underlying principles.
The author has attempted to investigate the influence of the charge of similar inorganic ions on their separation. In the case of adsorption chromatography, it may generally be stated that ions with higher valence are more readily adsorbed. Such a statement …
The Polarographic Determination Of Germanium, Herbert L. Bowkley
The Polarographic Determination Of Germanium, Herbert L. Bowkley
Masters Theses
"The purpose of this investigation was to study the polarographic behavior of germanium in various aqueous solutions. In addition to the simple polarographic behavior of germanium some attention was given to the applications or polarography for the development of an anlytical [sic] procedure for its quantitative determination in zinc ore concentrates and spelter fume materials"--Introduction, page 1.
A Stratigraphic Study Of Fusulinid Foraminifera In The Cherokee Group (Pennsylvanian) Of Western Missouri And Kansas, Ralph Orlansky
A Stratigraphic Study Of Fusulinid Foraminifera In The Cherokee Group (Pennsylvanian) Of Western Missouri And Kansas, Ralph Orlansky
Masters Theses
"Limestones or shaly limestones, from four stratigraphic levels in the Cherokee group (Desmoinesian series) of Missouri and Kansas, contain eight species and two varieties of fusulinid foraminifera, of which four species and two varieties are new, and one ophthalmidiid foraminiferal species (Hemigordius cf. regularis Plummer). The next to highest limestone (cap rock of the Fleming coal) is correlated with the Seahorne limestone of western Illinois, the Stonefort limestone of southern Illinois, and the Munterville limestone of Iowa. Hemigordius regularis, a limestone facies foraminifer apparently marks a correlatable interval in the Ardmore limestone. Descriptions of the fusulinids and the …
Polarization In Dielectric Liquids., Charlotte Zihlman Lemay
Polarization In Dielectric Liquids., Charlotte Zihlman Lemay
LSU Historical Dissertations and Theses
No abstract provided.
The Detection And Determination Of Antimony By Means Of Rhodamine B., William Cornelius Hamilton
The Detection And Determination Of Antimony By Means Of Rhodamine B., William Cornelius Hamilton
LSU Historical Dissertations and Theses
No abstract provided.
Radiolaria From The Porters Creek Formation (Paleocene, Midway Group) Of Stoddard County, Missouri, Eldridge Sellers Middour
Radiolaria From The Porters Creek Formation (Paleocene, Midway Group) Of Stoddard County, Missouri, Eldridge Sellers Middour
Masters Theses
"Fossil Radiolaria are described and figured from the Porters Creek formation (Paleocene) of Ardeola, Stoddard County Missouri. This is the first detailed treatment of fossil radiolarians from the Gulf Coast area. Thirty-one species are described and figured, all believed to be new, belonging to twenty-four genera. Fifteen families are represented, ten referable to the Legion Spumellaria, five to the Legion Nassellaria. Stratigraphic descriptions or the section at Ardeola is presented, and a discussion of laboratory techniques is included"--Abstract, page 3.
Effect Of Stubble Mulching On Number And Activity Of Earthworms, S. P. Teotia, F. L. Duley, T. M. Mccalla
Effect Of Stubble Mulching On Number And Activity Of Earthworms, S. P. Teotia, F. L. Duley, T. M. Mccalla
Nebraska Agricultural Experiment Station: Historical Research Bulletins
A survey of earthworm population under different cropping systems was made under stubble mulch farming and where the residue was plowed under. The influence of earthworms on some of the important physical and biological properties of the soil was studied. Their role in the decomposition of crop residues was also determined.
The Application Of Qualitative Inorganic Macro Procedures And Reagents To Spot Test Analysis, John Albert Stich
The Application Of Qualitative Inorganic Macro Procedures And Reagents To Spot Test Analysis, John Albert Stich
Bachelors’ Theses
Qualitative inorganic analysis is that branch of applied chemistry which has to do with the systematic detection or identification, and separation of the various metals and groups of elements which make up inorganic compounds. The indentification is made on the basis of precipitates and the color changes thereof, which result when a specific reagent is added to a solution of the sample. As opposed to quantitative analysis, measurability is not the essential factor, but it must be possible to observe the reaction easily and indubitably. It is not necessary for the material being tested for to be converted completely to …
The Effect Of Metals On Yeast Activity, Warren Joseph Chamberlain
The Effect Of Metals On Yeast Activity, Warren Joseph Chamberlain
Bachelors’ Theses
The writer, having been employed in the dry yeast research laboratory of one of this country's largest yeast concerns for the past three years, is very much interested in those factors which might affect the qualities of the final dry yeast product, and has therefore made the investigations presented in this paper.
Because of the numerous pieces of metallic equipment employed in the production of yeast, the possibility of metallic contamination in the final yeast product is considerable. Thus, the investigation presented in this paper was carried out in an effort to determine just what effect various concentrations of various …
Certain Coordination Compound Of The Element Thallium, David Albert Hill Roethel
Certain Coordination Compound Of The Element Thallium, David Albert Hill Roethel
Bachelors’ Theses
While pursuing courses at Marquette University, my curiosity was constantly piqued by that group of elements classified as the rarer elements. Because of its somewhat unusual properties, thallium in particular aroused my interest and I decided that I should like to investigate the element further to my own satisfaction. While thallium in all its ramifications has been studied at one time or another, comparatively little work has been done upon the coordination compounds that the element forms. In 1909 a German chemist, Gewecke, did a limited amount of work with these coordination compounds but since then very little has been …
Statistical Evaluation Of Laboratory Data Obtained From Two Methods Of Volumetric Analysis Of Titanium Compounds, Louis S. Winter
Statistical Evaluation Of Laboratory Data Obtained From Two Methods Of Volumetric Analysis Of Titanium Compounds, Louis S. Winter
Bachelors’ Theses
Titanium at last has entered the sphere of scientific practicality and general usefulness. It has overcome its position as an orphan of chemical interest and has been showered with the foistings of many industries. With this in mind, it is soon evident that a rapid and feasible system of analysis must be set up. Titanium presents a number of problems in the field of analytics, which are seldom, if ever, encountered when dealing with the commoner elements as iron, copper and tin. The purpose here is to study two methods of determination from the many which chemists have suggested and …
A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown
A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown
Bachelors Theses and Reports, 1928 - 1970
The objective of this thesis was to affect an efficient and economical recovery of corundum. The corundum occurs as a crude ore admixed with quartz and other diluents. Yet, this material is a potential Montana resource of a valuable non-metallic mineral. In view of the strategic importance and the relatively small production of this mineral in the United States, it seems advisable at this time in world affairs to investigate every possible source of this mineral.
The Renova "Syenite" Porphyry Madison County, Montana, James H. Clement
The Renova "Syenite" Porphyry Madison County, Montana, James H. Clement
Bachelors Theses and Reports, 1928 - 1970
Unique feldspar porphyries, syenitic in appearance, and granitic in composition, form an unusually thick sill intruding pre-Cambrian Belt graywacke about eight miles south of Whitehall in southwestern Montana. Commercial deposits of gold and silver ores occur nearby, and may possibly be genetically related to the porphyry, although direct association is not evident. The geologic age is believed to be late Cretaceous or early Tertiary, and the sill may be related to the Tobacco Root batholith.
The Construction And Testing Of An Ionization Chamber Designed For Use In Measuring The Roentgen Intensity Of An X-Ray Source, William F. Lindsay
The Construction And Testing Of An Ionization Chamber Designed For Use In Measuring The Roentgen Intensity Of An X-Ray Source, William F. Lindsay
Bachelors’ Theses
It was the author’s assignment for an undergraduate thesis, to construct an ionization chamber, which, when connected to a Dershem electrometer, could be used to determine the intensity of an X-ray source producing ionization within the chamber. It was desired that the chamber conform to the physical dimensions of the ionization intensity unit, commonly called the “Roentgen".
Studies In The Application Of Extraction Methods To Analytical Chemistry., Jack Kenneth Carlton
Studies In The Application Of Extraction Methods To Analytical Chemistry., Jack Kenneth Carlton
LSU Historical Dissertations and Theses
No abstract provided.
The Conservation Of Systems In Phase Space As Applied To The Liquid State., Ernest Ikenberry
The Conservation Of Systems In Phase Space As Applied To The Liquid State., Ernest Ikenberry
LSU Historical Dissertations and Theses
No abstract provided.
A Determination Of The Surface Tension Of Bismuth, Cadmium, Tin, And Lead, Edward Mckee Chandler
A Determination Of The Surface Tension Of Bismuth, Cadmium, Tin, And Lead, Edward Mckee Chandler
Masters Theses
"Various methods have been employed for the determination of surface tension including capillary rise, drop weight, maximum bubble pressure, sessile drops on flat surfaces, sessile bubbles formed underneath flat surfaces, and the shape of pendent drops. Each method is subject to characteristic advantages and disadvantages. Only two of these will be discussed. The method of maximum bubble pressure allows the formation of a fresh surface for every bubble but does not permit the study of a given sample over a period of time. The sessile drop in direct contrast, allows the observation of the same sample over any period of …
The Determination Of Hydrogen Numbers Of Various Olefins And Unsaturated Fatty Acids Using A Semi-Micro Hydrogenation Apparatus And To Compare These Numbers To Their Iodine Numbers, Francis J. Romeo
Bachelors’ Theses
Many important industrial applications for fatty acids and their derivatives are based on the ability of the unsaturated members of a series to combine with other molecules through the reactivity of their double bonds.
Investigators for quite some time have sought means and methods for determining the number and the position of these double bonds and correlating the results as a means of identification for the unsaturation in fats and oils. Iodine addition to the double bond is employed generally in analytical work as a measure of unsaturation and as a means of separating acids of varying degrees of unsaturation. …
The Synthesis And Physical Properties Of Several Aromatic Fluorides, Charles J. Basso
The Synthesis And Physical Properties Of Several Aromatic Fluorides, Charles J. Basso
Bachelors’ Theses
Since the advent of the Manhattan Project, more attention is being focused on fluorine compounds. Most of the inorganic fluorides are well known and are being used daily in industry. However, the realm of organic fluorides has not been investigated much up until recently, mainly because of the lack of safe and efficient fluorination reactions. Only within the last twenty-five years have reliable, indirect methods of fluorination been developed.
The purpose of this thesis is to give an outline of the most important fluorination processes, speaking of laboratory scale operations. The author illustrates the synthesis of an· aromatic fluoride by …
Electrolyte Equilibria In Blood, Edward J. Fitzsimons
Electrolyte Equilibria In Blood, Edward J. Fitzsimons
Dissertations
No abstract provided.
A Spectrophotometric Study Of Some Deuterium Substituted Toluenes--Infrared Region., Olen Alvin Nance
A Spectrophotometric Study Of Some Deuterium Substituted Toluenes--Infrared Region., Olen Alvin Nance
LSU Historical Dissertations and Theses
No abstract provided.
The Identification Of Various Alkyl Halides Through Formation Of Quaternary Ammonium Salts, John L. Canning
The Identification Of Various Alkyl Halides Through Formation Of Quaternary Ammonium Salts, John L. Canning
Bachelors’ Theses
Within the field of the characterization of organic compounds the preparation of suitable derivatives of the compound to be identified is the final process of the laboratory analysis. When the unknown is of such chemical nature that the preparation of derivatives is difficult or impossible the identification is not too satisfactory. This is often the case when the unknown is an alkyl halide. At present the identification of many of these compounds depends exclusively upon an examination of the physical constants.
It is the purpose of this paper to investigate the possibility of preparing quaternary ammonium compounds by treating the …
Concentration Of Manganese Dioxide From Philipsburg, Montana, W. M. Mcauliffe
Concentration Of Manganese Dioxide From Philipsburg, Montana, W. M. Mcauliffe
Bachelors Theses and Reports, 1928 - 1970
Imports of manganese ore probably supply a major proportion of the needs of the United States. Domestic production is reported to be higher than pre-war levels, but does not equal that of the peak production year of 1943. In 1946, the Anaconda Copper Mining Company accounted for 90 percent of the total shipments of manganese nodules, and this company is the largest producer of domestic metallurgical ore in the United States.
A Mineral Dressing Study Of The U.S. Grant Ore, John Emmett Murphy
A Mineral Dressing Study Of The U.S. Grant Ore, John Emmett Murphy
Bachelors Theses and Reports, 1928 - 1970
This investigation concerns the development of a satisfactory method or extracting or concentrating gold and silver from the ores of the U. S. Grant Mine. The choice between applying an extractive process and one by which the valuable mineral constituents are concentrated depends on more than one factor.
A Preliminary Study Of The Benefication Of Montana Kyanite, Donald Paul Mccarthy
A Preliminary Study Of The Benefication Of Montana Kyanite, Donald Paul Mccarthy
Bachelors Theses and Reports, 1928 - 1970
This investigation is a preliminary study of the beneficiation of Montana kyanite, and while preliminary in degree the information gained may serve as a guide for the eventual exploitation of this Montana resource.
American And British Atomic Energy Reports, O. Willard Holloway
American And British Atomic Energy Reports, O. Willard Holloway
United States Department of Commerce: Staff Publications
This publication lists all of the reports on atomic energy which have been released by the Office of Technical Services. Included are reports of both the United States and Great Britain. These reports are available to interested parties in either photostat
or microfilm form. Reports should be ordered from OTS by PB number and the order should be accompanied by a check or money order made payable to the Treasurer of the United States.
For convenience this publication is arranged in four parts:
Part 1. List of American Atomic Energy Reports.
Part 2. Numerical Index to American Atomic Energy Reports …
The Effect Of Metallic Fluorides On Oleic Acid At Elevated Temperatures, Lorraine W. Dupuis
The Effect Of Metallic Fluorides On Oleic Acid At Elevated Temperatures, Lorraine W. Dupuis
Bachelors’ Theses
The problem of finding the effect of metallic fluorine compounds on oleic acid at elevated temperatures was presented in connection with the thesis of J.J. Wocasek of Marquette University. Doctor Wocasek had used fluorine compounds as catalysts in a.n attempt to find a substitute for tung oil. He used the fluorides as catalysts in the esterification of glycerol with unsaturated acids.
Dielectric And Solvent Effects On The Alkaline Hydrolysis Of Ethyl-Acetate., James Edward Potts
Dielectric And Solvent Effects On The Alkaline Hydrolysis Of Ethyl-Acetate., James Edward Potts
LSU Historical Dissertations and Theses
No abstract provided.