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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.
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Showing 241 to 250 of 6224 (0.028 seconds)| 241 |
A STUDY OF THE BIOGENESIS OF LONG-CHAIN FATTY ACIDS IN A HIGHER PLANT (FLAX, LINUM USITATISSIMUM L.)Gibble, Walter Paul, 1916- January 1955 (has links)
No description available.
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| 242 |
NUCLEIC ACID METABOLISM IN CHLAMYDOMONAS MOEWUSII GClay, Willard Frank, 1941- January 1972 (has links)
No description available.
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| 243 |
Corrosion resistance of duplex stainless steels in selected organic acids and organic acid/chloride environmentsAdams, FV, Olubambi, PA, Potgieter, FH, Van Der Merwe, F 17 May 2010 (has links)
Abstract
Purpose – The purpose of this paper is to supplement the scant previous investigations on the corrosion behaviour of 2205 and 2507 duplex stainless
steels in selected organic acids containing chloride additions.
Design/methodology/approach – Microstructural examination of the alloys was first carried out, after which the corrosion behaviour of the alloys in
citric, oxalic, formic and acetic acids containing chloride additions at varying temperatures was studied using electrochemical techniques.
Findings – The alloy 2507 material had a larger grain size than did the alloy 2205 sample. The corrosion resistances of the alloys generally are highest
in acetic acids and lowest in citric acid. The addition of chloride had a pronounced effect on their corrosion resistance. Alloy 2507 generally exhibited
higher corrosion resistance in all of the acids than alloy 2205, with the exception of acetic acid at room temperature. The 50:50 ratio of ferrite to
austenite composition, as revealed by phase compositional analysis, indicated no significant possibility for galvanic corrosion between the phases.
This suggests that the corrosion behaviour of the alloys is controlled by their grain sizes and chemical compositions.
Originality/value – Although the corrosion behaviour of duplex stainless steels in some organic acid media has been reported, this investigation
covers the major organic acids not previously reported. Since in real industrial systems a mixture of both organic and minerals acids/salts may typically
exist, investigations of the combined effect of chloride ions with the organic acids reported in this paper typify real industrial operations. The paper thus
provides a basis for material selection for the application of 2205 and 2507 in industrial systems where organic acids are mostly used.
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Efforts toward the total synthesis of 7-deoxyzaragozic acic A and galtamycinoneEscobar, Maya 05 May 2011 (has links)
Not available / text
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| 245 |
A study of the synthesis and properties of some oxiranyl and thiirangllong chain fatty acid esters and the production of furanyl derivativesfrom the seed oil of biota orientalis鄭一楓, Zheng, Yi-Feng. January 1988 (has links)
published_or_final_version / Chemistry / Master / Master of Philosophy
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| 246 |
A study of the synthesis and properties of some long chain fatty acid esters containing azido, amino, amido and amino acid residues and theanalysis of some seed oils used in Chinese medicine老洪柏, Lao, Hongbai. January 1989 (has links)
published_or_final_version / Chemistry / Master / Master of Philosophy
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| 247 |
An unusual turn structure in peptides containing alpha-aminoxyacids吳飛虎, Ng, Fei-fu. January 1998 (has links)
published_or_final_version / Chemistry / Master / Master of Philosophy
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| 248 |
Regulation of mammary tumor cell cycle kinetics and gene expression bydietary fatty acids吳欲勳, Ng, Yuk-fun. January 1998 (has links)
published_or_final_version / Zoology / Master / Master of Philosophy
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| 249 |
The growth and fatty acid formation of Monodus Subterraneus under mixotrophic conditions林萍萍, Lam, Ping-ping. January 2000 (has links)
published_or_final_version / Botany / Master / Master of Philosophy
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| 250 |
The fatty acid composition of grapefruit seed oilTeles, Francisco Franco Feitosa, 1941- January 1971 (has links)
No description available.
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