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Showing 1 to 20 of 31 for “"Influence of pH"”.
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Influence of pH and protein ChePep on motility of Helicobacter pylori
… detect external acidic signal as they cross the pH gradient in the viscoelastic, gel-like mucus layer. The first part of this work explores the effects of pH on H. pylori’s motility in both culture broth (BB10) and porcine gastric mucin (PGM). In the human stomach there is a pH gradient across …
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Influence of pH and NOM on Sorption of Phenols onto Aquifer Material
… as retardation mechanism in subsurface transport of organic water constituents. Geosorption behaviour of Ionisable Hydrophobic Organic compounds (IHOCs) especially influence of dissolved natural organic materials on their sorption coefficients is poorly investigated. In this study influence of pH …
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The Influence of Ph, Phosphate, and Silicate on Zinc Adsorption by Clays and Soils
… in DSpace on 2014-12-12T00:17:44Z (GMT). No. of bitstreams: 1 7121192.pdf: 3244106 bytes, checksum: 4ef42d310db1670bc6b5c0260bcdba84 (MD5) Previous issue date: 1971
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Thermal Hydrolysis of LCFAs and Influence of pH on Acid-phase Codigestion of FOG
… to improve the management and performance of processes for the co-digestion of biosolids with fats, oils, and grease (FOG). The mechanisms of long chain fatty acids (LCFA) degradation in thermal hydrolysis pretreatment and the influence of pH on LCFA degradation in two-phase co-digestion …
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Influence of pH, phosphorus addition and soil water content on phosphorus pools in acid sulfate soils
… This thesis aimed to investigate the effect of P addition, pH and soil water content on P pools in ASS. A sandy sulfuric ASS (pH 3.2) was used in the experiments. In the first experiment, the ASS was amended with NaOH or Ca(OH)2) to achieve soil pH 4 or 5.5, without or with addition of …
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Determination of Calcium Binding to Beta-Casein at Various Ph Values Using the Calcium Murexide Method
Calcium binding to casein affects the formation of casein micelles and the behavior of the casein proteins during processing. Since calcium binding is pH dependent, it is important to understand the binding properties of the non-micellar caseins with calcium ions under the influence of pH. The …
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DEVELOPMENT OF ELECTRO-ENHANCED MICROEXTRACTION TECHNIQUES
… TECHNIQUES WHICH ARE BASED ON THE USE OF AN ELECTRICAL POTENTIAL APPLIED DURING THE EXTRACTION PROCESS TO ENHANCE ITS EXTRACTION EFFICIENCY. THE DRIVING FORCE AFFECTED BY ELECTRICAL POTENTIAL FOR ANALYTES EXTRACTION IN DIFFERENT SAMPLE MATRIXES WAS DEMONSTRATED TO BE THE KEY PERFORMANCE …
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Optical properties and biological applications of fluorescent gold nanoclusters
… materials such as good water-solubility, high photostability, large Stokes shift, ultrasmall size, nontoxicity, and good biocompatibility. Despite promising applications and intensive interests, the study of the fluorescence mechanism of AuNCs has so far been limited. In order to investigate …
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The Effect of Wine Matrix Ingredients on 3-Alkyl-2-methoxypyrazines Measurements by Headspace Solid-Phase Microextraction (HS-SPME)
The effect of wine matrix ingredients and conditions on the headspace (HS) sampling of 3-alkyl-2-methoxypyrazines was investigated with solid-phase microextraction (SPME) and capillary gas chromatography, using a nitrogen phosphorus detector. Changes in the recovery of 3-ethyl-, isopropyl-, …
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Etude des propriétés de surface et techno-fonctionnelles des fractions protéose-peptones
… fractions are complex heterogeneous mixture of thermoresistant proteins of whey. The general objective of this work was to contribute to a better knowledge and understanding of surface properties and techno-functional properties (foaming and emulsifying properties) and well as setting a …
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Electrokinetic separations in fused silica capillaries
Methods of co-optimizing resolution and detection in Capillary Zone Electrophoresis (CZE) and Micellar Electrokinetic Chromatography (MEKC) are examined by deriving mathematical expressions which illustrate the relative importance of various experimental parameters. For CZE, expressions are derived …
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Formation of (halo)acetamides and (halo)acetonitriles from the reaction of monochloramine and (halo)acetaldehydes in water
… States as a secondary disinfectant as a result of tighter regulations on selected disinfection by-products (DBPs) that include four trihalomethanes and five haloacetic acids. However, recent research suggests that unregulated nitrogen-containing DBPs formed by combined chlorine, such as …
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Isolation, Characterization, And Application Of Novel Bacteriophages For Preventing Experimental Infection With Mycobacterium avium subspecies paratuberculosis (MAP) Of Dairy Calves
… ruminants, poses a substantial economic burden of $28 million CAD annually to the Canadian dairy industry. The disease is caused by Mycobacterium avium subsp. paratuberculosis (MAP) and primarily spreads to youngstock through the ingestion of contaminated feed and water. Due to JD's prolonged …
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Understanding environmental influences on bioaccumulation of contaminants of emerging concern among fish species.
By 2050, ~ 70% of the global population will live in urban areas. Concurrently, chemical pollution presents risks to humans and the environment around the world, and chemical production exceeds interventions in many regions. Pharmaceuticals and per-and polyfluoroalkyl substances (PFAS) are two …
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The Influence of Water Quality Characteristics on Vanadium Toxicity to Model Aquatic Organisms
Vanadium (V) is a contaminant of emerging concern for the Alberta oil sands region that could present a risk for aquatic organisms. Petroleum coke (PC) has been experimentally used to treat oil sands process-affected water (OSPW) to reduce organic toxicants. However, PC contains up to 1,000 mg of V …
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Food safety in wine: optimization of analytical controls and evaluation of production technologies
This PhD thesis has been proposed to validate and then apply innovative analytical methodologies for the determination of compounds with harmful impact on human health, such as biogenic amines and ochratoxin A in wines. Therefore, the influence of production technology (pH, amino acids precursor …
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Relaxation dynamics in heme proteins
… are likely arranged in . a hierarchy consisting of a number of tiers. A hierarchical organization of conformational substates is expected to give rise to a multitude of nonequilibrium relaxation phenomena. H the temperature is lowered, transitions between substates of higher tiers are frozen out, …
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Using simulation and lab validation to develop a MnCO3 Recovery Process using CO2
… (Mn) is a critical metal in the production of lithium-ion battery (LiB) precursors due to its role in improving safety, stability and promoting higher efficiency and faster charging of LiBs. Battery-grade Mn or High Purity Manganese Sulphate Monohydrate (HPMSM, MnSO4·H2O), a key LiB …
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Volatile Fatty Acid Production in Ruminants
Volatile fatty acids (VFA) are important products of ruminal fermentation. The VFA are not only the major source of energy to the ruminant animals but also influence methane production in the rumen. Therefore it is important to understand mechanism controlling VFA production and to depict VFA …
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REMEDIATION OF TEXTILE AND MINING INFLUENCED EFFLUENTS USING NOVEL HETEROGENEOUS PAN CATALYST AND MODIFIED PAN MESH
The effectiveness of a modified PAN catalyst and hydrogen peroxide system in the treatment of textile effluent and a modified ion exchange PAN mesh in the remediation of non-coal mine drainage was investigated. The results show a tremendous potential in the treatment of such wastewaters. The …
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