Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 125 for “"polyamine"”.
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Surface Characteristics of Silica Polyamine Composites
… to explore the surface characteristics of silica polyamine composites (SPC) by elucidating coordination environments, measuring surface stability, and comparisons with analogous materials. Application of SPC materials as supports for heterogeneous catalysts was also investigated. Analytical …
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Surface Characteristics of Silica Polyamine Composites
… to explore the surface characteristics of silica polyamine composites (SPC) by elucidating coordination environments, measuring surface stability, and comparisons with analogous materials. Application of SPC materials as supports for heterogeneous catalysts was also investigated. Analytical …
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Characterization of the expression profile of polyamine biosynthetic genes (Spermidine synthase) and polyamine metabolic regulation in arabidopsis
<p>Polyamines are ubiquitously distributed cationic compounds, which play important roles in numerous cellular functions in plants. This study was aimed at elaborating the regulation of polyamine biosynthetic gene expression and polyamine metabolism. The organ/tissue specific expression patterns of …
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Transgenic manipulation of polyamine metabolism in poplar
<p>Polyamines are low molecular weight polycations found in all living organisms. They are involved in plant stress response and development. The study was aimed at analyzing the effects of altered polyamine metabolism on the polyamine and related pathways in transformed poplar cells overexpressing …
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Gene expression profiling of polyamine-depleted Plasmodium falciparum
Polyamines play an important role in DNA, RNA and protein synthesis as well as a variety of other biological processes (cell division, differentiation and death) as outlined in Chapter 1. Assaraf and co-workers (1984) demonstrated that treatment with DFMO resulted in the inhibition of polyamine …
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The Structure Function Relationship of Silica Polyamine Composites
… thesis were to improve the performance of silica polyamine composites by manipulating the surface structure and to understand the relationship between, polymer structure and ligand modification of the grafted polyamine. Improvements in silica polyamine composite performance resulted from modifying …
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The Structure Function Relationship of Silica Polyamine Composites
… thesis were to improve the performance of silica polyamine composites by manipulating the surface structure and to understand the relationship between, polymer structure and ligand modification of the grafted polyamine. Improvements in silica polyamine composite performance resulted from modifying …
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Polyamine metabolism in Arabidopsis: Transgenic manipulation and gene expression
<p>The metabolism of polyamines (Putrescine, Spermidine and Spermine) in wild type and transgenic Arabidopsis thaliana (Col 0 ecotype) plants was studied using the techniques of transgenic manipulation and gene expression. Two specific objectives were: (1) To study the effects of inducible and …
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USE AND MACRO-MOLECULAR STRUCTURE OF SILICA POLYAMINE COMPOSITES
The use and macro-molecular structure of silica polyamine composites was examined through a series of experiments. Precious metals were removed from both prepared and industrial solutions to gain familiarity with the composites and to develop separation procedures. A number of methods were …
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Comparison of Silica Polyamine Composites and Crosslinked Polystyrene Resins
The development of silica polyamine composites (SPC) was inspired by the need for more environmentally benign ways of extracting and recovering technologically important and environmentally dangerous metals from waste streams. These solid phase adsorbents are designed to endure the extreme …
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USE AND MACRO-MOLECULAR STRUCTURE OF SILICA POLYAMINE COMPOSITES
The use and macro-molecular structure of silica polyamine composites was examined through a series of experiments. Precious metals were removed from both prepared and industrial solutions to gain familiarity with the composites and to develop separation procedures. A number of methods were …
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Comparison of Silica Polyamine Composites and Crosslinked Polystyrene Resins
The development of silica polyamine composites (SPC) was inspired by the need for more environmentally benign ways of extracting and recovering technologically important and environmentally dangerous metals from waste streams. These solid phase adsorbents are designed to endure the extreme …
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Synthesis and Characterization of Polyamine Bicycles for Anion Binding
Abstract This thesis details the interaction between anions, such as Br-, Cl-, and F- and a group of familiar Schiff base derived azacryptands. Often these systems are synthesized by tosylating i.e., protecting, the bridging amine sites to prevent them from undesirable interactions. Only after …
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Understanding polyamine metabolism through transgenic manipulation in poplar suspension cultures
<p>Polyamines are low molecular weight aliphatic amines that are obligatory requirements for cell survival and growth. The commonly occurring polyamines in plants are putrescine, spermidine, and spermine. Suspension cultures of poplar (Populus nigra x maximowiczii), transformed with a mouse …
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Novel polyamine based anticancer agents: evaluation of the mode of action.
Novel bisnaphthalimidopropyl polyamine analogues (BNIPPs) were previously synthesised and found to bis-intercalate to DNA via the major groove and have interesting anticancer properties prompting this study to evaluate their mode of action. All BNIPPs synthesised exert cytotoxicity in colon, breast …
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The synthesis of biologically active oxa-polyamine analogues, homologues and conjugates.
Polyamines such as putrescine, spermidine, and spermine and their derivatives are found to be present in every living cell. Being products of amino acid metabolism polyamines play an important role in normal cell function and replication. Analogues, homologues, and derivatives of natural polyamines …
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Human retroplacental serum polyamine oxidase : purification and characterization / by Robin James Storer.
… the purification and characterization of human polyamine oxidases found in rectoplacental serum.
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