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 185 for “"H2S"”.
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Hydrogen Sulfide (H2S) and the Cardiovascular System
Hydrogen sulfide (H2S) has relatively recently been added to a list of endogenously produced gaseous signalling molecules. Our understanding of the science of H2S has advanced rapidly in recent years as exemplified by the fact that, within a mere 10 years, a range of H2S releasing drugs have …
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Self-assembled Peptide Hydrogels for Therapeutic H2S Delivery
Hydrogen sulfide (H2S) is a gasotransmitter that is produced endogenously and freely permeates cell membranes. It plays important roles in many physiological pathways, and by regulating these pathways, it provides many therapeutic effects. For example, H2S dilates vascular vessels, promotes …
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Synthesis, Properties, and Biology of Advanced H2S-Releasing Materials
Hydrogen sulfide (H2S) is an endogenously produced signaling gas involved in numerous cellular functions. At the appropriate concentration, exogenous administration of this gasotransmitter regulates vasodilation, promotes angiogenesis of endothelial cells, and generally exhibits beneficial effects …
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Biofiltration for Control of H2S from Wastewater Treatment Plant Gases
A low-cost and efficient methodology was used to test the performance of a biofilter removing gaseous hydrogen sulfide generated in the headworks and a primary clarifier of a local Wastewater Treatment Plant. The contaminated gas stream is distributed upward through 1,718 m3 of filter material. …
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Waste to an Asset, H2S to Hydrogen: A DFT Study
Electrolysis of hydrogen sulfide (H2S) offers a green and zero-emission process for producing hydrogen and for treating the harmful H2S from oil and gas industries. However, the development of such technology requires an efficient and stable catalyst. Herein, we investigate the mechanism of …
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Mechanistic Electrochemistry: Investigations of Electrocatalytic Mechanisms for H2S Detection Applications
This thesis describes the development of electrochemical analytical approaches for the investigation of sulphide detection in stagnant and fluidic environments. The project reports the use of Fourier transform large amplitude alternating current voltammetry (FTACV) as a novel analytical technique …
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Polymer-Nanohydrogels sensor for the determination of H2S in polluted air by UaV drone [Sensore a base di nanohydrogel polimerici per la determinazione di H2S in aria inquinata tramite droni UAV]
… La tesi si concentra sul solfuro di idrogeno (H2S), un gas altamente tossico, utilizzando un innovativo sistema di nanohydrogel (P-NHs). I P-NHs, ricchi di gruppi amminici, permettono un'efficiente chelazione di Cu2+, garantendo alta sensibilità e selettività a livelli di ppb. I test sul …
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Mesostructured metal oxide-based nanocomposites as sorbents for H2S removal from syngas coal gasification
… develop efficient MeOx/SBA-15-based sorbents for H2S removal in view of possible applications in hydrogen purification, air pollution control, and deep desulphurization of fossil fuels. It is precisely in the latter topic that the research project was born. The production of power, fuels and …
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Sulfide stress cracking resistance of API-X100 high strength low alloy steel in H2S environments
… NACE TM0177 "A" solution is a hydrogen sulfide (H2S) saturated solution containing 5.0 wt.% sodium chloride (NaC1) and 0.5 wt.% acetic acid (CH3COOH). The aim of this thesis was to study the effect of microstructure, non-metallic inclusions and alloying elements of the X100 on H2S corrosion and …
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Investigation towards controlled precipitation of nickel using H2S(g) by harnessing pH dependent sulphide speciation
… Ni2+, was utilised to determine the effect of H2S(g) as a precipitating agent.
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Review of H2S abatement in geothermal plants and laboratory scale design of tray plate distillation tower
… non-condensable gases (NCG) such as CO2 and H2S within geothermal fluids have led to increased interest in developing methods for decreasing these emissions through abatement systems or even potentially using these gases to generate value for use in industrial processes. A literature research …
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Viabilidad de un proceso para la eliminación conjunta de H2S y NH3 contenido en efluentes gaseosos
H2S y NH3 son compuestos altamente tóxicos, incoloros, irritantes y malolientes. Considerables concentraciones de H2S y NH3 son emitidos por procesos industriales como plantas petroquímicas, industria alimentaria, plantas de tratamiento de aguas residuales, vertederos, granjas animales e industria …
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Development of Polymeric Microparticle-Based Drug Delivery System for Sustained Delivery of H2S for Treatment of Glaucoma
… retinal neuroprotection. Hydrogen sulfide (H2S), an endogenous gasotransmitter, has shown therapeutic potential in glaucoma because of its dual action in lowering IOP and providing neuroprotection. However, the clinical application of H2S is challenging because of its gaseous nature, …
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The Effect of Fungicide Residues and Yeast Assimilable Nitrogen on Fermentation Kinetics and H2S Production during Cider Fermentation
… of apples and production of hydrogen sulfide (H2S) in cider fermentations. Yeast assimilable nitrogen (YAN) concentration and composition and residual fungicides influence H2S production by yeast during fermentation, but these factors have to date only been studied in wine grape fermentations. …
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Development of mouse models of hydrogen sulfide-induced neurotoxicity for the evaluation of neuroprotective strategies
<p>H2S is a colorless gas with a strong “rotten egg” odor. While at physiological concentrations, H2S is a vital gasotransmitter; exposure to high concentrations can result in extreme intoxication, leading to acute death within minutes. H2S poisoning is a leading cause of occupational deaths. Among …
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