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 25 for “"pH level"”.
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Biological and physical treatment of crab processing industry wastewaters
… flow rate, influent temperature, and influent pH. A maximum ammonia removal of 71% was observed when treating a waste, with an influent temperature of 580C and pH level of 12.2, at an air-to-water ratio of approximately 825 ft³/gal. Similarly, an ammonia removal rate of 67% was observed while …
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Application of electrokinetic remediation on contaminated alluvial soils in Sri Gading, Batu Pahat,
… gamma radiation doserate (TGRD) by reducing soil pH level during electrokinetic processes was somewhat new and exciting in this study. The TGRD and soil pH of various soil type within Batu Pahat and Kluang districts were measured. Soil with the highest TGRD was selected to be remediated by various …
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Paper-based microfluidic device with a gold nanoparticle sensor for arsenic detection applied to groundwater in Bangladesh
… at the World Health Organization (WHO) guideline level (10 μg/L). A method has also been developed to prevent interference from alkaline metals (Ca, Mg, K and Na) by altering the pH level on the μPADs. The heavy metals present in groundwater (Mn, Pb, Ni, Cd, Fe III and Fe II) are also confirmed no …
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Monitoring Dissolution of Nonsteroidal Anti-Inflammatory Drugs Using Infrared Spectroscopy
… by an IR probe for eight hours while using 0.1M phosphate buffer pH 7.4, 0.05M phosphate buffer pH 4.5 and simulated gastric fluid pH 1.2 as the medium. The percent dissolved was calculated for each brand and times vary depending on the pH level. All three brands dissolved one hundred percent in …
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The Effect of Feeding, Bilateral Parotidectomy, and Pilocarpine Treatment on Parotid Hormone Secretion in the Pig
… and masticatory stimuli on parotid hormone (PH) secretion is reported. Feeding a regular chow was shown to be a potent stimulus for PH secretion. The parotid endocrine system is highly sensitive to the eating stimulus, since a period of feeding lasting 30 sec is enough to cause a significant …
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The Use of Ceftiofur Sodium in the Extension and Cooled Storage of Equine Semen: Its Effects on Motion Characteristics, pH, Osmolality, and Bacterial Growth
… Inc., New York, NY) is a third generation cephalosporin antibiotic with high antibacterial activity and a broad resistance to β-lactamases. The purpose of the current study was to evaluate varying levels of ceftiofur sodium added to a skim milk-glucose based semen extender in comparison to …
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Cheddar cheese : Its texture, chemical composition and rheological properties.
… fat, moisture and salt contents and the pH level of the seventeen Cheddar samples were established. An inverse correlation between fat and moisture content and a positive correlation between pH level and salt content were observed. The rheological properties were measured using three …
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Chemistry directed assembly of multilayered polymer thin films and colloidal particles
… with maximal selectivity at the moderate pH level of 4.8; in contrast, polyallylamine hydrochloride (PAH) based multilayers are attracted to the EG surface under certain pH conditions, with maximal selectivity on EG also at a pH of 4.8. Chemical force microscopy was used to directly …
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Theoretical Modeling of Polymeric and Biological Nanostructured Materials
… to environmental stimuli such as temperature, pH level, and ionic strength have found important uses in these applications. Therefore, to optimize their performance and improve their design, precise characterization techniques are essential for understanding the nanoscale properties of polymer …
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Highly Integrated Graphene-Based Chemical Sensing Platform for Structural Monitoring Applications
Two-dimensional materials, such as graphene, hold promise for sensing applications. Graphene's remarkable surface-to-volume ratio, when employed as a transducer, enables the sensor channel to be readily modulated in response to chemical changes in proximity to its surface, effectively converting …
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Chemical Identification and Organoleptic Evaluation of Iodine and Iodinated Disinfection By-Products Associated with Treated Spacecraft Drinking Water
… potable water. Experiments were performed at pH 5.5 and 8, iodine concentrations of 10 and 50 mg/L, and organic concentrations of 5 and 50 mg/L. Gas chromatography/mass spectrometry was used to identify and monitor the concentrations of organic species. Spectrophotometry was used to monitor …
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Iron recovery from a representative water treatment plant sludge
… of soluble iron increased substantially when the pH was lowered to a level of 2.0 and then diminished at pH values below 1.0. Iron recovery appeared to generally follow the stoichiometry predicted. Acid addition to the sludge resulted in an improvement in sludge dewatering properties. Settling …
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Investigation of Divergent Metabolic Programs in the Tumor-Immune Microenvironment
… cancer cell metabolism independent of the acidic pH environment. Additionally, therapeutic lactate treatment significantly increased the glycolytic activity and effector functions of CD8+ T-cells, contrary to the current understanding that lactate dampens immune cell functions. The comparison …
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Mechanisms of Non-Enzymatic Peptide Bond Formation: Thioester and Transamidation Routes
… during both the thioester-based production of phenylalanine peptides and peptidyl thioesters, and the spontaneous cyclization of glutamine t-butyl ester (Gln-tbe) into pyroglutamic acid t-butyl ester. Internal standard-based quantitative MS determined that 4.9 x 10-5 sec-1 was the rate constant …
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Fluorescence photophysics, characterisation and application of labelled glucose/galactose binding protein
… also shown that alterations in temperature and pH level had deleterious effects on the sensor function. The dyes Texas Red and iodoacetamide nile red (IANR) were attached to the GBP binding site to investigate the possibility of producing an alternative, longer-wavelength sensor system than when …
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Investigation into the Production of Carbonates and Oxides from Synthetic Brine through Carbon Sequestration
… processes were carried out under a controlled pH level, to study the constant pH’s effect on the process and resulting precipitates. Other controllable factors include pH, temperature, initial concentration, stirring speed, and CO2 flux rate. In conclusion, the optimum parameters for the …
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Using Free Water Surface Constructed Wetland for the Mitigation of High PH Secondary Effluent From Municipal Wastewater Treatment Plant
… algal growth that results in sustained high pH levels in the system and effluent. Amherstview Water Pollution Control Plant (WPCP) in Amherstview, Ontario frequently experiences high pH effluent during the summer and is assessing the potential of a constructed wetland (CW) system to mitigate …
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Rekombinantinio TDP-43 baltymo sintezės ir gryninimo optimizavimas /
… solubility of the target protein. The effect of pH on the solubility of SUMO-TDP-43 protein in the 5-8 range was also evaluated. At pH 5, the SUMO-TDP-43 protein became unstable and insoluble, likely due to misfolding or denaturation. As the pH increased, the results improved, and the highest …
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Isolasi dan identifikasi bakteri asam laktat pada susu kambing segar
… faktor dan 3 kali ulangan. Faktor pertama adalah pH, level pH yang digunakan adalah 4,5, 5,5 dan 6,5. Faktor kedua adalah suhu, level suhu yang digunakan adalah 250 C, 350 C, 450 C. Adapun bakteri yang telah berhasil diisolasi dan diidentifikasi adalah bakteri asam laktat(BAL) Lactobacillus …
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Classification of Foetal Distress and Hypoxia Using Machine Learning
… the foetal heart rate with a cardiotocography, which has succeeded traditional methods for foetal monitoring since 1960. Despite the indication of normal results, these results are not reassuring, and a small proportion of these foetuses are actually hypoxic. This study investigates the use …
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