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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

the Metabolism of Alkylthioacids.

Brown, William Theophlus. January 1954 (has links)
The nitrification of ammonia and nitrite in soil is but one part of the overall nitrogen cycle. Essentially, nitrification may be defined as an oxidative-reductive mechanism whereby ammonium ions or nitrite ions are oxidized to nitrate by microorganisms.
12

The synthesis of diphosphopyridine nucleotide in the erythrocyte.

Malkin, Aaron. January 1956 (has links)
At the outbreak of World War II, work was initiated in the Department of Biochemistry at McGill University, under the direction of Dr. O. F. Denstedt, on a study of the means whereby the then existing methods of blood preservation might be improved. Similar investigations were undertaken in many other laboratories throughout the world, particularly in the United States and Great Britain. The availability of blood and plasma for prompt treatment of the wounded at the fighting front accounted for the tremendous saving of lives in World War II as compared with World War I.
13

Intermedin and Tyrosinase.

Purvis, John L. January 1956 (has links)
The literature on the enzyme tyrosinase is extensive and to a large extent contradictory. No attempt will be made to give a complete coverage of the publications on this subject. Because of the confusion in the nomenclature and classification of the various enzymes that oxidize phenols, as to properties and function, it is expedient to confine the survey to the relevant details. [...]
14

Metabolism of progesterone and cortisone.

Rao, Baindur. G. January 1956 (has links)
A quarter of a century has elapsed since the first steroid hormone was isolated. Since then, there has been a profound and significant advance in our knowledge of the biogenesis of these steroid hormones and their ultimate fate in the living organism. Less progress, however, has been made in understanding the mode of their physiological action. Studies during the last decade have pointed to a more or less common pathway of steroid biogenesis and metabolism.
15

Studies on carbohydrate metabolism in the central nervous system.

Parmar, Surendra. S. January 1957 (has links)
There have been remarkable developments in the field of the intermediary metabolism of carbohydrates during the past twenty five years. These developments were due (1) the elucidation of the anaerobic glycolytic breakdown of carbohydrate having its origin in Embden's discovery of phosphoglyceric acid in 1933 and (2) the oxidative tricarboxylic acid cycle discovered by Krebs and Johnson in 1937.The present concepts of the metabolism or carbohydrates centres round these two themes. However, the central role of these pathways is being challenged by the discovery and elucidation of alternative pathways of metabolism.
16

a Pentose Phosphate Metabolic Pathway in Human Erythrocytes.

Brownstone, Yehoshua Shieky. January 1959 (has links)
Ten years ago, the glycolytic system as elucidated by Embden, Meyerhof and others, along with the tricarboxylic acid system as elucidated by Krebs and others, was believed to be the sole pathway of carbohydrate metabolism. Other reactions, known to be concerned with the metabolism of carbohydrates, were considered to be side reactions of the major scheme. [...]
17

Effect of aliphatic alcohols on liver metabolism.

Majchrowicz, Edward. January 1959 (has links)
The work of Bourchadat and Sandras (1) was the first recorded attempt to determine the fate of ethanol in the body. They suggested that ethanol is completely burned in the organism to carbon dioxide. Although this observation was confirmed by others, the general belief persisted that ethanol was not oxidised at all, but was eliminated unchanged (2). This theory was based on the results of the animal experiments formed about 1870 which showed that ethanol appeared both in the urine and expired air. Later, Dupre, Anstie and others (3,4,5,6) found that most of the administered ethanol disappears and that the amounts recovered in the urine represent only a very small fraction of the original dose.
18

The isolation and identification of an estrone conjugate from human pregnancy urine.

Ramseyer, Judith. January 1960 (has links)
The object of this work was the isolation of an estrone conjugate, in a chemically pure form, from human pregnancy urine; and the characterization of this compound by classical procedures. In the course of the investigation, a partial separation of the various estrogen conjugates in pregnancy urine was accomplished through counter current distributions between nor-butanol and alkaline buffers.
19

Nucleic acids of normal and neoplastic tissues.

Spencer, John. H. January 1960 (has links)
In 1868 Miescher (1), by digesting pus cells with pepsin-hydrochloric acid and then shaking with ether, isolated nuclei and prepared from them an unknown compound which he called "nuclein". The substance was acidic in nature, insoluble in dilute acid but readily soluble in dilute alkali, and contained a high proportion of phosphorus. This latter property was noteworthy, for at that time the only known organic compound of phosphorus in the tissues was lecithin. Be subsequently prepared nucleins from a variety of tissues.
20

Glutamine metabolism in Ehrlich ascites carcinoma cells.

Coles, Norman. W. January 1961 (has links)
Glutamine was first isolated from beet juice in 1883 by Schulze and Bosshard (1), and since that time it has been the subject of continued interest and research. The widespread occurence of this amide in nature, in bath the free and combined state, is consistent with a significant metabolic role, and there is evidence for its participation in a variety of enzymatic reactions.

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