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 17 of 17 for “"Concentration curve"”.
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Determination of Atrazine Concentration in Freshwaters Using Fluorescence Spectroscopy
… optimal wavelength of 363 nm. Known and unknown concentrations of atrazine will be analyzed using fluorescence spectrophotometer to develop a calibration curve. </p> <p>The calibration concentration curve developed would be used in the future as an analytical technique to determine the …
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The association between ambient air pollution and cardiorespiratory health outcomes of adults residing in informal settlements of the Western Cape in a 12 month period
… of PM2.5 and NO2 on the outcome of interest. A concentration curve was determined, while adjusting for confounders (paraffin exposure, mould exposure, smoke exposure, low education, unemployed, sex and age). Results: Most of the participants were female (89.9%), with a median age of 40 …
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The measurement of the diffusion coefficient of water in poly (ethylene oxide) water solutions using a nuclear magnetic resonance pulsed field gradient technique
… (ethylene oxide) solutions as a function of concentration using a pulsed field gradient NMR technique, for values of the concentration of poly-ox in H2O from to 1.2 gm poly-ox/gm. Near zero poly-ox concentration, the slope of the D vs. concentration curve is quite large. As the concentration …
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Study of the C-curve fluctuation analysis for a CSTR reactor
… was to determine whether the fluctuations of concentration in the exit stream for a RTD were statistically random. A 460ml one inlet, one outlet CSTR (Continuous Stirred Tank Reactor) was set up to perform the RTD (Residence Time Distribution) test. A electrical conductivity probe capable of …
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The effects of R(+)-lipoic acid supplementation on regulation of human skeletal muscle pyruvate dehydrogenase
… decreased the 180-min area under the glucose concentration and insulin concentration curve during an oral glucose tolerance test (OGTT) (n=4). In the same individuals, lipoic acid supplementation decreased pyruvate dehydrogenase kinase activity (PDK) (0.09 ± 0.024 min"^ vs. 0.137 ± 0.023 min'\ …
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An investigation into out of pocket health expenditure in India
… semi-parametric instrumental variable Engel curve model, Indian households, both rural and urban are found to protect food expenses and decrease spending on education, clothing, bedding and footwear expenses to cope with OOPHE. Rural Indians also increase travel expenses to cope with OOPHE. …
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Double burden of malnutrition among women in South Africa: evidence from the demographic health survey
… size was reduced to 3262 non-pregnant women. The concentration curve and the concentration index were used to assess the socioeconomic inequalities. Finally, an in-depth decomposition analysis uncovered the key driving factors contributing to the observed inequalities. The data management, …
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Analytical Solutions for Hydraulic Fracture Diagnosis
… solutions are developed for tracer response curves of: (1) conservative and/or reactive tracers in single-well push/pull tests, and (2) a conservative tracer that is contained in the fracture only. The hydraulic fracture is treated as linear flow with uniform flux fluid loss. It is found that …
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Analytical Solutions for Hydraulic Fracture Diagnosis
… solutions are developed for tracer response curves of: (1) conservative and/or reactive tracers in single-well push/pull tests, and (2) a conservative tracer that is contained in the fracture only. The hydraulic fracture is treated as linear flow with uniform flux fluid loss. It is found that …
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Socioeconomic inequalities in COVID-19 outcomes in south Africa
… were further investigated using the Wagstaff concentration index of inequality and concentration curves. Results: Using factor loadings attained from PCA, we grouped our variables into the 3 domains of socioeconomic standing, validating the intersectional framework conceptualised in the study. …
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Diagnostic and therapeutic biomarker responses in HIV and tuberculosis co-infected patients
… In general, isoniazid area under the concentration curve (AUC)0-∞ and maximum concentration (Cmax) were lower amongst the study 1 compared to study 2 participants. INH and AcINH PK parameters across genotypes were not statistically significantly different within each study. The log …
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Socioeconomic inequalities in non-communicable diseases in South Africa
… (NIDS) were used. The methods used include the concentration curve, concentration index and decomposition analysis to assess the drivers of socioeconomic inequality in NCDs and some causes of NCDs including smoking, obesity, high blood pressure; use of screening services and effective coverage …
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Preclinical Study of Potential Antiglioma Novel Tetrahydroisoquinoline Analogs: Pharmacokinetics and Mechanism of Action
… The ratio of the EDL-291 brain area under concentration curve (AUC) to plasma AUC between 20 - 180 min after intravenous injection was 14.0. The brain/plasma AUC ratio at 10 - 180 min after 50mg/kg subcutaneous injection to C57BL/6J mice was 4.07. The bioavailability (F) of EDL-291 after …
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Efeito relaxante de derivados N-sulfonilidrazônicos do rolipram em traqueia de cobaia : investigação do mecanismo de ação do LASSBio-1846
… participation of these receptors. The relaxation curve of LASSBio - 1846 was shifted to the right (pD 2 = 5.13 ± 0. 07) with reduction of 1 .7 folds on blocker presence, suggesting a participation of β 2 - adrenergic receptor on derivative induced relaxation. The β 2 - adrenergic receptor leads to …
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Population pharmacokinetic modelling for dose optimization of esomeprazole to treat early-onset preeclampsia
… with preclinical efficacy data showing it lowers concentrations of soluble fms like tyrosine kinase 1 (sFlt-1) and soluble endoglin (sEng), pathognomonic biomarkers identified in preeclampsia. A randomized controlled trial, Preeclampsia Intervention with Esomeprazole (PIE) trial, was conducted in …
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Nitrogen nutrition of harmful algal blooms in upwelling systems
… Dinophysis acuminata dominated when NO3<br/>- concentrations were <0.5 ?mol l-1 and ƒ-ratios <0.1 in 2007, although in 2008 it formed a subsurface maximum, often associated with high NO3- concentrations. Nutrient uptake kinetics showed that Pseudo-nitzschia spp. displayed the highest maximum …
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Mode of action of organosilicone surfactants in enhancing the performance of Triclopyr herbicide
… branches were assessed regularly. Chlorophyll concentration in young shoots on bush tops was determined at 2, 4 and 6 weeks after spraying to evaluate the rate of chlorophyll loss from sprayed gorse and to see whether this objective measurement was representative of formulation efficacy after …