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 1338 for “"sulfate"”.
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Enzymatic and analytical tools for the characterization of chondroitin sulfate and dermatan sulfate glycosaminoglycans
… important subset of GAGs, namely heparin/heparan sulfate-like glycosaminoglycans (HSGAGs). The study of chondroitin sulfate and dermatan sulfate (CS/DS), an equally important subset of GAGs, has lagged behind partially due to a lack of enzymatic and analytical tools akin to those developed for …
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The chlorination of sulfate lignin
… of lignin obtained from the black liquors of the sulfate process of paper manufacture. Results of preliminary experimental work indicated that the optimum method of chlorinating lignin was by suspending or dissolving the lignin in methyl alcohol. The sulfate lignin was chlorinated in two liter …
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Heparan sulfate glycosaminoglycan regulation of vasculogenesis
… in stem cell differentiation. Heparan sulfate glycosaminoglycans (HSGAG) are a crucial part of the dynamic extracellular matrix and have been shown to regulate multiple signaling cascades, including vasculogenic specific growth factors VEGF and FGF. The goal of this thesis is to …
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Polyelectrolyte conditioning of ferric sulfate sludge
Tests were run on samples of ferric sulfate sludge collected from the sedimentation basins of a water treatment plant during basin cleaning operations. The purpose of the testing was to determine if cationic, anionic and nonionic polyelectrolytes could successfully condition the sludge to improve …
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The microbial immobilization of zinc sulfate
… power plant. To enhance sulfide production by sulfate reducing bacteria, an organic carbon source (1% cellulose g<sup>-1</sup> dry sediment) and 200 ppm sulfate were added into the microcosms. The rates of microbial respiration were determined by the analyses of carbon dioxide, oxygen, methane …
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Ionene and ionene alkyl sulfate stoichiometric complexes
… formed stoichiometric complexes with alkyl sulfates. The ionene alkyl sulfate complexes display mesogenicity, i.e. optically isotropic dry complexes underwent lyotropic and thermotropic phase transitions to the optically anisotropic phase (and vice versa) under controlled relative humidity. …
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Regulation of Bacteroides chondroitin sulfate utilization genes
… the first such study using the chondroitin sulfate utilization (csu) system in Bacteroides thetaiotaomicron as the model system to study regulation.
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Heat treatment and hydration of calcium sulfate
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1937.
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The swelling behavior of clay-sulfate rocks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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Measurements and modeling of deposition rates from near-supercritical, aqueous, sodium sulfate and potassium sulfate solutions to a heated cylinder
… The salts that are formed upon neutralization (sulfates, chlorides, phosphates, etc.) have low solubility in supercritical water (SCW) and consequently precipitate as solid phases. These salts can form agglomerates and coat internal surfaces, leading to plugging of transport lines and inhibition …
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Neuartige Sulfate der Platin- und Selten-Erd-Metalle
… Vordergrund standen dabei die Darstellung neuer Sulfate auf verschiedenen Wegen und ihre thermoanalytische Charakterisierung. Als potentielle Edukte für die Synthesen erfolgte u. a. der Einsatz neuartiger Chlorometallate der Platinmetalle. Aus der Umsetzung von Oleum und einem Hexachloroiridat …
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Laboratory Scale Study of Calcium Sulfate Hydration Forms
… understand the dehydration properties of calcium sulfate dihydrate, and the hydration of calcium sulfate hemihydrate as well as anhydrous calcium sulfate. The lab-scale kinetics of these processes were studied using thermogravimetric analysis and sorption analysis. Scanning electron microscopy …
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Heparan Sulfate Proteoglycans in Pancreatic Ductal Adenocarcinoma (PDAC)
<p>We have previously identified a heparan sulfate proteoglycan (HSPG), Syndecan-1 (SDC1), as a key effector for pancreatic ductal adenocarcinoma (PDAC) progression whose surface expression is driven by KRAS*. By leveraging various PDAC models, we found that surface SDC1 expression was initially …
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Sulfate soil stabilisation with silica fume-based binders
Sulfate soils are encountered in nearly every country in the world. These soils, where calcium-based stabilisers are added, can undergo heave-induced expansion as a result of the formation of ettringite. Therefore, this research examines the viability of using silica fume (a by-product of silicon …
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A Potentiometric Method for the Determination of Sulfate
The precipitation of barium sulfate is the basis of many sulfate analyses. The literature cites many direct volumetric methods using diphenyl benzidine as indicator. Other methods make use of ethylene diamine tetracetic acid sodium salt for direct precipitation titrations.
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