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Qamar Adnan Anwar Zahid Ali Hassan Shaukat Rabia Imran Shahid Arshad Attique Ali Hafiz Muhammad Korakianitis Theodosios 《Journal of Thermal Analysis and Calorimetry》2022,147(1):23-46
Journal of Thermal Analysis and Calorimetry - Nanofluids have recently attracted attention of many researchers due to their growing potential applications in heat transfer devices. They possess... 相似文献
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Arain MB Kazi TG Jamali MK Afridi HI Jalbani N Memon AR 《Journal of AOAC International》2007,90(4):1118-1127
A simple and efficient procedure for the determination of arsenic (As), cadmium (Cd), and lead (Pb) in the edible parts of freshwater fish by ultrasonic-assisted acid pseudodigestion (USD) was developed. A Plackett-Burman experimental design was used as a multivariate strategy for the evaluation of the effects of several variables at once. Five variables--sonication time, sample mass of muscle tissue, temperature of the ultrasonic bath, mL of nitric acid, and mL of a mixture of acid and oxidant--were regarded as factors. From these studies, certain variables showed up as significant, and they were optimized by a 23+star central composite design, which involved 16 experiments. Optimum values of the variables were selected for the development of USD to determine the contents of As, Cd, and Pb in fish muscles used as pollution bioindicators from Lake Manchar (Sindh, Pakistan). The determination of the 3 toxic metals under study was performed by electrothermal atomic absorption spectrometry. The accuracy of the optimized procedure was evaluated by analysis of certified reference materials BCR 185R bovine liver and by comparison with conventional wet acid digestion methodology. The result obtained by the optimized method showed good agreement with the certified values and sufficiently high recovery. No significant differences were observed for P = 0.05. Relative standard deviation values (average of 10 separate determinations) were 1.21, 5.52, and 5.32% for As, Cd, and Pb, respectively. 相似文献
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We report the use of M-mode swept source optical coherence tomography (SS-OCT) for measuring sodium chloride (NaCl) salt concentrations
in liquid phantoms and in drawn whole blood based on temporal dynamics of light scattering. The Brownian motion of scattering
particle is affected due to the change in viscosity of liquid. An autocorrelation function was determined from the power spectrum
of SS-OCT signal and then was fit by mono and double exponential function to obtain decorrelation time. These translational
decorrelation times corresponding to translational diffusion coefficients enabled us to find the controlled viscosity of the
medium. The viscosities of the media were compared with literature values and a fair/excellent agreement was observed. Thus,
the technique has ability to quantify the salt levels in terms of viscosity in nonflowing medium suspensions and many research
routes necessary to determine its potential for in-vivo applications. 相似文献
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