The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Shaoyi Jiang - One of the best experts on this subject based on the ideXlab platform.
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dry film refractive index as an Important Parameter for ultra low fouling surface coatings
Biomacromolecules, 2012Co-Authors: Norman D Brault, Harihara S Sundaram, Yuting Li, Chunjen Huang, Qiuming Yu, Shaoyi JiangAbstract:Here we demonstrate that the film refractive index (RI) can be an even more Important Parameter than film thickness for identifying nonfouling polymer films to undiluted human blood plasma and serum. The film thickness and RI are two Parameters obtained from ellipsometry. Previously, film thickness has been correlated to ultra-low fouling properties. Practically, the film RI can be used to characterize polymer density but is often overlooked. By varying the water content in the surface-initiated atom transfer radical polymerization of zwitterionic carboxybetaine, a minimum of ∼1.5 RI units was necessary to achieve <5 ng/cm2 of adsorption from undiluted human serum. A model of the film structure versus water content was also developed. These results point to an Important Parameter and simple approach for identifying surface coatings suitable for real-world applications involving complex media. Therefore, ultra-low fouling using a thin film is possible if it is densely packed.
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Dry Film Refractive Index as an Important Parameter for Ultra-Low Fouling Surface Coatings
Biomacromolecules, 2012Co-Authors: Norman D Brault, Harihara S Sundaram, Yuting Li, Chunjen Huang, Qiuming Yu, Shaoyi JiangAbstract:Here we demonstrate that the film refractive index (RI) can be an even more Important Parameter than film thickness for identifying nonfouling polymer films to undiluted human blood plasma and serum. The film thickness and RI are two Parameters obtained from ellipsometry. Previously, film thickness has been correlated to ultra-low fouling properties. Practically, the film RI can be used to characterize polymer density but is often overlooked. By varying the water content in the surface-initiated atom transfer radical polymerization of zwitterionic carboxybetaine, a minimum of ∼1.5 RI units was necessary to achieve
Heinz Dieter Isengard - One of the best experts on this subject based on the ideXlab platform.
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water an Important Parameter for the preparation and proper use of certified reference materials
Food Chemistry, 2006Co-Authors: S. Yazgan, Franz Ulberth, Alexander Bernreuther, Heinz Dieter IsengardAbstract:Abstract Property values of powdered certified reference materials (CRMs) are very often related to dry mass. The dry mass is indirectly determined by measuring the moisture content of the sample. The most commonly used methods are the drying oven method and the Karl Fischer titration (KFT). It is well known that these two methods may give different values for the moisture/water content. In this study thermogravimetry was used to simulate the drying oven method and to investigate the reasons of the differences between both moisture/water content determination methods. A mass spectrometer coupled to a thermobalance (TGMS) added further useful information regarding the release of volatile substances and the decomposition of the material during the drying process. The relative humidity of the laboratory may influence the water content of powdered CRMs because of their more or less pronounced tendency to take up water (hygroscopicity). This fact can lead to biased property values. The water adsorption kinetics and the water uptake capacity vary, depending on the constitution of the sample. This was studied analysing several powdered food CRMs and individual constituents thereof. The speed of water uptake and the water uptake capacity were described using an exponential function. The findings have consequences both for the producer and for the user of certified reference materials.
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Water - An Important Parameter for the preparation and proper use of certified reference materials
Food Chemistry, 2006Co-Authors: S. Yazgan, Franz Ulberth, Alexander Bernreuther, Heinz Dieter IsengardAbstract:Property values of powdered certified reference materials (CRMs) are very often related to dry mass. The dry mass is indirectly determined by measuring the moisture content of the sample. The most commonly used methods are the drying oven method and the Karl Fischer titration (KFT). It is well known that these two methods may give different values for the moisture/water content. In this study thermogravimetry was used to simulate the drying oven method and to investigate the reasons of the differences between both moisture/water content determination methods. A mass spectrometer coupled to a thermobalance (TGMS) added further useful information regarding the release of volatile substances and the decomposition of the material during the drying process. The relative humidity of the laboratory may influence the water content of powdered CRMs because of their more or less pronounced tendency to take up water (hygroscopicity). This fact can lead to biased property values. The water adsorption kinetics and the water uptake capacity vary, depending on the constitution of the sample. This was studied analysing several powdered food CRMs and individual constituents thereof. The speed of water uptake and the water uptake capacity were described using an exponential function. The findings have consequences both for the producer and for the user of certified reference materials. © 2005 Elsevier Ltd. All rights reserved.
Yanping Li - One of the best experts on this subject based on the ideXlab platform.
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blastocoele expansion an Important Parameter for predicting clinical success pregnancy after frozen warmed blastocysts transfer
Reproductive Biology and Endocrinology, 2019Co-Authors: Jing Zhao, Xi Huang, Yanping LiAbstract:To assess the predictive value of each individual morphological Parameter: blastocoele expansion degree, inner cell mass (ICM), and trophectoderm (TE) grades on the clinical pregnancy outcome in frozen–warmed embryo transfer (FET) cycles. This is a retrospective cohort study, including 1154 FET cycles receiving vitrified-warmed one or two blastocysts transfer from August 2011 through to May 2018. The correlation between blastocyst morphology Parameters and clinical outcome after FET was assessed. In the subgroup analysis based on clinical pregnancy, the patients who achieved clinical pregnancy had a significantly higher degree of blastocyst expansion (3.69 ± 0.68 vs. 3.53 ± 0.78, P = 0.000) and had a thicker endometrium (9.65 ± 1.63 vs. 9.28 ± 1.64) compared with those with non-clinical pregnancy. The logistic regression analysis showed that among the three blastocyst morphology Parameters, only the blastocoele expansion degree was significantly correlated with the clinical pregnancy outcome and had ability to predict the outcome after FET cycles with one or two vitrified-warmed blastocysts transferred. Both ICM and TE stages were not associated with pregnancy outcomes. The blastocoele expansion degree may be essential for successful pregnancy and should be given priority when selecting frozen blastocyst for transfer.
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Blastocoele expansion: an Important Parameter for predicting clinical success pregnancy after frozen-warmed blastocysts transfer
Reproductive Biology and Endocrinology, 2019Co-Authors: Jing Zhao, Xi Huang, Yanping LiAbstract:Objective To assess the predictive value of each individual morphological Parameter: blastocoele expansion degree, inner cell mass (ICM), and trophectoderm (TE) grades on the clinical pregnancy outcome in frozen–warmed embryo transfer (FET) cycles.
Srdjan Nesic - One of the best experts on this subject based on the ideXlab platform.
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a direct measurement of wall shear stress in multiphase flow is it an Important Parameter in co2 corrosion of carbon steel pipelines
Corrosion Science, 2016Co-Authors: Wei Li, B F M Pots, Bruce Brown, Srdjan NesicAbstract:Abstract Wall shear stress produced by turbulent multiphase flow is considered an Important Parameter in CO2 corrosion as it has been claimed to be responsible for the removal of protective corrosion product layers and corrosion inhibitor films. In this study, a floating element wall probe was used to directly measure wall shear stress in multiphase flow; the highest measured values were of the order of 100 Pa. Findings suggest that the wall shear stress alone, produced in multiphase flow patterns covered in the present study, is insufficient to mechanically damage the protective corrosion product layers or corrosion inhibitor films.
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A direct measurement of wall shear stress in multiphase flow—Is it an Important Parameter in CO2 corrosion of carbon steel pipelines?
Corrosion Science, 2016Co-Authors: Wei Li, B F M Pots, Bruce Brown, Srdjan NesicAbstract:Abstract Wall shear stress produced by turbulent multiphase flow is considered an Important Parameter in CO2 corrosion as it has been claimed to be responsible for the removal of protective corrosion product layers and corrosion inhibitor films. In this study, a floating element wall probe was used to directly measure wall shear stress in multiphase flow; the highest measured values were of the order of 100 Pa. Findings suggest that the wall shear stress alone, produced in multiphase flow patterns covered in the present study, is insufficient to mechanically damage the protective corrosion product layers or corrosion inhibitor films.
Norman D Brault - One of the best experts on this subject based on the ideXlab platform.
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dry film refractive index as an Important Parameter for ultra low fouling surface coatings
Biomacromolecules, 2012Co-Authors: Norman D Brault, Harihara S Sundaram, Yuting Li, Chunjen Huang, Qiuming Yu, Shaoyi JiangAbstract:Here we demonstrate that the film refractive index (RI) can be an even more Important Parameter than film thickness for identifying nonfouling polymer films to undiluted human blood plasma and serum. The film thickness and RI are two Parameters obtained from ellipsometry. Previously, film thickness has been correlated to ultra-low fouling properties. Practically, the film RI can be used to characterize polymer density but is often overlooked. By varying the water content in the surface-initiated atom transfer radical polymerization of zwitterionic carboxybetaine, a minimum of ∼1.5 RI units was necessary to achieve <5 ng/cm2 of adsorption from undiluted human serum. A model of the film structure versus water content was also developed. These results point to an Important Parameter and simple approach for identifying surface coatings suitable for real-world applications involving complex media. Therefore, ultra-low fouling using a thin film is possible if it is densely packed.
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Dry Film Refractive Index as an Important Parameter for Ultra-Low Fouling Surface Coatings
Biomacromolecules, 2012Co-Authors: Norman D Brault, Harihara S Sundaram, Yuting Li, Chunjen Huang, Qiuming Yu, Shaoyi JiangAbstract:Here we demonstrate that the film refractive index (RI) can be an even more Important Parameter than film thickness for identifying nonfouling polymer films to undiluted human blood plasma and serum. The film thickness and RI are two Parameters obtained from ellipsometry. Previously, film thickness has been correlated to ultra-low fouling properties. Practically, the film RI can be used to characterize polymer density but is often overlooked. By varying the water content in the surface-initiated atom transfer radical polymerization of zwitterionic carboxybetaine, a minimum of ∼1.5 RI units was necessary to achieve