Browsing Doctoral Dissertations by Issue Date
Now showing items 1-20 of 14916
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A study of the crease-resistance of viscose rayon
(Virginia Tech, 1942-05-01)Crease-resistance is a very greatly desirable property in textile fibers. Of the natural fibers, wool exhibits this property to the greatest degree, followed by silk, cotton, and flax, which has a very low crease-resistance. ... -
Reactions of cellulose in liquid sulfur dioxide
(Virginia Tech, 1942-06-29)It appears impossible to nitrate cellulose in a medium of liquid sulfur dioxide either ~~th ruming nitric acid, a mixture of fuming nitric acid and sulfuric acidt a mixture of fuming nitric acid and phosphorus pentoxide, ... -
The feasibility of commercial utilization of cotton fabric and cotton conversion products for synthetic lumber
(Virginia Tech, 1942-12-01) -
The dissolution of urinary calculi
(Virginia Agricultural and Mechanical College and Polytechnic Institute, 1943)A brief investigation was made of various organic and inorganic solvents for the dissolution of urinary calculi in vitro and Albright’s (1) citric acid buffer and a solvent designated in this investigation simply as “G” ... -
The solvent extraction of oil from acorns
(Virginia Polytechnic Institute, 1945) -
The physiology of the genus bacillus
(Virginia Polytechnic Institute, 1945)The object of the present investigation was to determine quantitatively the extent of glucose and d- and l-arabinose utilization in order to separate it from the other two factors influencing the pH change in the medium. ... -
The development and evaluation of a commercial process for the production of benzene hexachloride
(Virginia Polytechnic Institute, 1948) -
The correlation of mechanical properties of ethyl cellulose films with shape of distribution curves
(Virginia Polytechnic Institute, 1949) -
A correlation of the mechanical properties of cellulose nitrate films as a function of the shape of the distribution curve
(Virginia Polytechnic Institute, 1949) -
The experimental evaluation of definite integrals
(Virginia Polytechnic Institute, 1949)When making an estimate of the total of some quantity, sampling at carefully selected points will frequently be preferable to employing a method which involves randomization. The estimation of the total stand of timber on ... -
The oxidation of ethylene to ethylene oxide
(Virginia Polytechnic Institute, 1949)The purpose of this investigation was to determine the effect of the operating variables of type of reactor, catalyst, ethylene feed concentration, temperature, and contact time on the products of oxidation of ethylene to ... -
The design, construction, and operation of a centrifugal molecular still
(Virginia Tech, 1949-05-15)The three basic requirements for unobstructed, short path distillation are: a surface over which a think layer of distilland is distributed, a cooler condensing surface in close proximity to the evaporating surface, and ... -
Ultrasonic coagulation of phosphate tailing
(Virginia Polytechnic Institute, 1950)no abstracts provided by author -
Lactic acid fermentation of xylose by Escherichia coli: carbon tracer studies on the C₂ + C₁ condensation reaction
(Virginia Polytechnic Institute, 1950)The ubiquitous distribution of the pentose molecule in nature and particularly its presence in certain enzymes and in nucleic acids emphasizes the metabolic significance of these carbohydrates. In living systems the pentoses ... -
A study of the mechanism of aromatic cyclodehydration
(Virginia Polytechnic Institute, 1950) -
The oxygen uptake by pseudomonas fluorescens on glucose, xylose, arabinose and acetate under varying conditions of substrate concentration and environmental temperature
(Virginia Polytechnic Institute, 1951)Industrial waste pollution is a problem of considerable magnitude and of great importance to modern industry. One critical aspect of waste pollution is reduction of dissolved oxygen in natural waters resulting from the ... -
Respiration rates on various nitrogenous substrates by Zoogloea ramigera: a bacterium found in aerobic phases of sewage treatment
(Virginia Polytechnic Institute, 1951) -
Electrochemistry of systems containing aluminum phosphate dissolved in fused borate and phosphate mixtures
(Virginia Polytechnic Institute, 1952)The purpose of this investigation was to study the possibility of using, as electrolyte for the deposition of aluminum, systems containing aluminum phosphate dissolved in fused borate and phosphate mixtures. Aluminum ... -
Modification of the hog cholera virus
(Virginia Polytechnic Institute, 1952)Rabbit Passage of the Virus The hog cholera virus was carried through six alternate passages from pig to rabbit and then top five serial passages in rabbits. The virus could not be demonstrated in rabbit-spleen suspension ... -
A correlation of the mechanical properties of cellulose nitrate films as a function of the shape of the chain length distribution curve
(Virginia Polytechnic Institute, 1952)no abstract provided by author
