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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 119 for “"Physico-chemical properties"”.
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Physico-chemical properties of polypropylene glycols
Poly(propylene glycol) (PPG) samples of different molecular mass were characterized using differential scanning calorimetry, modulated differential scanning calorimetry, thermogravimetry and thermally stimulated current (TSC) spectroscopy. It was shown, by TSC, that the glass transition temperature …
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Heusler alloys – processing, characterization and study of physico-chemical properties
La tesis trata de la fabricación de nuevos materiales basados en aleaciones Heusler ternarias y cuaternarias, que muestran elevados valores de polarización de espín, tanto teóricos, como experimentales. Las aleaciones Heusler son candidatas adecuadas para aplicaciones en espintrónica, por su gran …
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Some Physico-Chemical Properties of an Immunoglobulin-a Myeloma Protein
Made available in DSpace on 2014-12-09T22:04:18Z (GMT). No. of bitstreams: 1 6910677.pdf: 3800202 bytes, checksum: 98e2539f1200929e9f08c3afc90fe5c8 (MD5) Previous issue date: 1968
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Synthesis, physico-chemical properties and potential applications of colloidal gel particles
Four new N-isopropylacrylamide (NIPAM) based particles have been synthesized and characterized. The first experimental chapter reports that fluorescent poly(Nisopropylacrylamide-co-5% vinyl cinnamate) microgels were deposited on different solid surfaces to produce new environmental responsive …
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About the role of physico-chemical properties and hydrodynamics on the progress of a precipitation reaction
The size and morphology control of precipitated solid particles is a major economic issue for numerous industries. For instance, it is interesting for the nuclear industry, concerning the recovery of radioactive species from used nuclear fuel. The precipitates features, which are a key parameter …
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Solute-Polymer States of Water and the Physico-Chemical Properties of Food Model Systems (Crystallinity, Sorption, Hysteresis, Starch)
The objective was first to study physico-chemical properties of solute-polymer mixtures as related to water binding, solute content and water activity (a(,w)). It was hypothesized that these properties were due to the presence of solute (SOL) and polymer (POL) water. The second objective was to …
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Effect of storage temperature and duration on physico-chemical properties, microbial growth and nutritional composition of papaya and banana fruits
Kultivar pisang (Musa sp.) dan betik (Carica papaya) dituai dan disimpan selama sebulan pada suhu penyimpanan dan jangka masa berbeza. Buah-buahan ini diambil daripada kebun yang terletak di Johor Bahru, Malaysia. Masak dalam tempoh yang tidak diingini, perubahan warna kulit, penurunan berat, …
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Quantitative characterization of physico-chemical properties of the active layers of reverse osmosis and nanofiltration membranes, and their relation to membrane performance
… and analytical procedures to quantify different physico-chemical properties of the ultra-thin (~ 100 nm) active layers of reverse osmosis (RO) and nanofiltration (NF) membranes and their interactions with contaminants; (ii) to use such procedures to evaluate the similarities and differences …
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Kidney stone rarity in South Africa's black population : investigation of the biochemical and physico-chemical properties of Tamm Horsfall Mucoprotein as a possible contributory factor
… to compare the relative inhibitory and biochemical properties of this protein in South African black and white healthy and stone—forn1ing male subjects. THP was isolated by salt precipitation, purified by column chromatography and verified by electrophoresis on SDS-polyacrylamide gels. …
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Understanding the Toxicity Effects of Nanostructures: I. Effect of Physico-chemical Properties on Environmentally Relevant Organismal Toxicity. II. Design of Novel Nanostructures to Reduce Environmental Toxicity while Retaining Functional Properties
… unique optical, electronic, and antibacterial properties. However, proliferated use of nanomaterials will lead to increased entrance into the environment where toxicity can occur to plants and other organisms. The focus of this research is to understand the origin of nanomaterial organismal …
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A study of the effects of sucralfate in the bile duct litigated pig peptic ulcer model with particular reference to the effects on the physico-chemical properties of gastric mucus and including comparisons with famotidine and misoprostol
… claimed that Sucralfate acted by altering the physico-chemical properties of mucus to increase the viscosity and retard the back diffusion of H+ ions. The work described in this dissertation set out to verify, in vivo, these claimed effects on mucus, using an experimental porcine model of …
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Characterization of Organosilicone Surfactants and Their Effects on Sulfonylurea Herbicide Activity
… surface deposition, and various measurements of physico-chemical properties. In measuring physico-chemical properties, a logistic dose response relationship was found between adjuvant concentration and contact angle on parafilm. An AsymSigR relationship existed between adjuvant concentration and …
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Synthesis and characterization of nanofluids for cooling applications
… The aim of this project was to investigate the physico-chemical properties of nanofluids synthesized using submicron and high aspect ratio particles suspended in heat transfer fluids.
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The effect of phyllosilicate mineralogy and surface charge on the rheology of mineral slurries
… issues. Despite many good studies on the physico-chemical properties of phyllosilicates, there still remains a poor understanding of their suspension flow behaviour. The primary objective of this thesis was to characterise the colloidal behaviour of three commonly occurring …
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Partitioning and Diffusivity of arsenic(III) in the Active Layer of Thin-Film Composite Reverse Osmosis and Nanofiltration Membranes
… (1) successful characterization of membrane physico-chemical properties, including elemental composition, thickness and roughness of membrane active layer; (2) characterization of the partitioning behavior of neutral and ionic species at various pH and concentration conditions; (3) …
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Colloidal microgels as (trans)dermal drug delivery systems
… and release of model compounds with different physico-chemical properties (i.e. solubility and logKoct/w) to and from two colloidal gel systems. Secondly, the permeation of model compounds across a model skin membrane (silicone membrane), and human epidermis was investigated. The first part of …
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An investigation into polymeric excipient-drug compatibility in solid-liquid formulations
… of a given drug substance with known physico-chemical properties. This was achieved by quantifying the adsorption of different polymers onto a range of drug substances from different solvent environments and to establish which physico-chemical properties of the polymers control their …
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Studies on equine milk and comparative studies on equine and bovine milk systems
… and is claimed to have special therapeutic properties, it is becoming increasingly popular in Western Europe, where it is produced on large farms in several countries. Equine milk is considered to be highly digestible, rich in essential nutrients and to possess an optimum whey protein:casein …
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