The Experts below are selected from a list of 1029 Experts worldwide ranked by ideXlab platform
Redouane Borsali - One of the best experts on this subject based on the ideXlab platform.
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Phase-Separation Kinetics and Mechanism in a Methylcellulose/Salt Aqueous Solution Studied by Time-Resolved Small-Angle Light Scattering (SALS)
Macromolecular Chemistry and Physics, 2011Co-Authors: Marcos A. Villetti, Valdir Soldi, Cyrille Rochas, Redouane BorsaliAbstract:Phase-separation dynamics are investigated by SALS in aqueous MC solutions in the presence of 5% NaCl, promoted by a quench temperature. The observed scattering peak indicates that the phase separation occurs by the SD mechanism, leading to a bicontinuous structure. A Semilog Plot of I(q) against time in the early stage of SD gives a straight line, but the position of qmax varies; also, a Cahn–Hilliard Plot indicates that diffusive processes dominate and the data can be described by linear CHC theory. Dapp shows a kinetic dependency on the quench temperature. The spinodal temperature of the sample is 418C. In the late stages, S(q,t) collapses into a universally time-independent curve.
Richard A. Ferrell - One of the best experts on this subject based on the ideXlab platform.
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Specific heat of a BCS superconductor
Annalen der Physik, 1993Co-Authors: Richard A. FerrellAbstract:By expressing the free energy as an appropriate temperature integration over the square of the BCS energy gap function and by substituting simple but accurate analytic expressions for the latter, corresponding expressions are obtained for the specific heat in the superconducting state. In the upper portion of the temperature range, the ratio of the specific heats in the superconducting and normal states is 2.43 (1 + 0.936 in t), to better than one per cent accuracy, where t is the reduced temperature. Thus, the Semilog Plot of temperature versus the ratio of specific heat to temperature is a straight line over a large portion of one decade of specific heat. Corresponding expressions of similar simplicity and accuracy are obtained for the middle and low temperature ranges.
Marcos A. Villetti - One of the best experts on this subject based on the ideXlab platform.
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Phase-Separation Kinetics and Mechanism in a Methylcellulose/Salt Aqueous Solution Studied by Time-Resolved Small-Angle Light Scattering (SALS)
Macromolecular Chemistry and Physics, 2011Co-Authors: Marcos A. Villetti, Valdir Soldi, Cyrille Rochas, Redouane BorsaliAbstract:Phase-separation dynamics are investigated by SALS in aqueous MC solutions in the presence of 5% NaCl, promoted by a quench temperature. The observed scattering peak indicates that the phase separation occurs by the SD mechanism, leading to a bicontinuous structure. A Semilog Plot of I(q) against time in the early stage of SD gives a straight line, but the position of qmax varies; also, a Cahn–Hilliard Plot indicates that diffusive processes dominate and the data can be described by linear CHC theory. Dapp shows a kinetic dependency on the quench temperature. The spinodal temperature of the sample is 418C. In the late stages, S(q,t) collapses into a universally time-independent curve.
Kazuo Tsubota - One of the best experts on this subject based on the ideXlab platform.
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Turnover rate of tear-film lipid layer determined by fluorophotometry
The British journal of ophthalmology, 2009Co-Authors: Hiroshi Mochizuki, Masakazu Yamada, Shin Hatou, Kazuo TsubotaAbstract:Aim: This study was performed to independently assess the turnover rates of aqueous and lipid layers of the tear film. Methods: Two fluorescent dyes, fluorescein sodium and 5-dodecanoylaminofluorescein (DAF), which is a free-fatty-acid conjugate of fluorescein, were applied to the right eye of 12 healthy volunteers. Fluorescent intensity of the precorneal tear film was measured at the central cornea every minute for 10 min for fluorescein sodium, and every 5 min for 50 min for DAF. The turnover rate was calculated by Plotting fluorescent intensity against time in a Semilog Plot and expressed as %/min. Results: Turnover rates of fluorescein sodium and DAF were 10.3 (SD 3.7)%/min and 0.93 (0.36)%/min, respectively. The turnover rate of DAF was significantly lower than that of fluorescein sodium (p Conclusion: Our results indicate that the turnover of lipids in tears is much slower than the aqueous flow of tears, and that this lipid turnover is associated with the aqueous flow of tears in healthy adults.
Valdir Soldi - One of the best experts on this subject based on the ideXlab platform.
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Phase-Separation Kinetics and Mechanism in a Methylcellulose/Salt Aqueous Solution Studied by Time-Resolved Small-Angle Light Scattering (SALS)
Macromolecular Chemistry and Physics, 2011Co-Authors: Marcos A. Villetti, Valdir Soldi, Cyrille Rochas, Redouane BorsaliAbstract:Phase-separation dynamics are investigated by SALS in aqueous MC solutions in the presence of 5% NaCl, promoted by a quench temperature. The observed scattering peak indicates that the phase separation occurs by the SD mechanism, leading to a bicontinuous structure. A Semilog Plot of I(q) against time in the early stage of SD gives a straight line, but the position of qmax varies; also, a Cahn–Hilliard Plot indicates that diffusive processes dominate and the data can be described by linear CHC theory. Dapp shows a kinetic dependency on the quench temperature. The spinodal temperature of the sample is 418C. In the late stages, S(q,t) collapses into a universally time-independent curve.
