PURPOSE To report early, specific changes in donor endothelial cell morphology as a predictor of an upcoming allograft rejection after Descemet membrane endothelial keratoplasty (DMEK). DESIGN Retrospective, observational case series. METHODS Out of a cohort of 500 eyes that underwent DMEK at a tertiary referral center, 7 eyes developed typical clinical signs of an allograft rejection. Spec...

A mass transfer model is proposed for prediction of permeate concentration and percent rejection at different inlet pressures and feed dye concentrations in membrane ultrafiltration. A differential equation in cylindrical co-ordinates considering the spiral wound membrane equivalent to a cylindrical module is derived which coupled with mass balance and permeate flux equations are solved to yiel...

Robust estimators of a correlation coefficient based on: (i) direct robust counterparts of the sample correlation coefficient, (ii) nonparametric measures of correlation, (iii) robust regression, (iv) robust estimation of the variances of principal variables, (v) stable parameter estimation, and (vi) the preliminary rejection of outliers from the data with the subsequent application of the samp...

Stress induced by application of electric foot shocks (300 microA/shock, five shocks per episode, 4 episodes at 1800, 1830, 1900 and 1930 hrs on the proestrus day) to rats at the time of pre-ovulatory progesterone secretion, abolished lordosis and resulted in maximum rejection co-efficient, whereas treatment with a CRF receptor antagonist (alpha-helical CRF9-41) or metapirone, an inhibitor of c...

In the present study, micellar-enhanced ultrafiltration (MEUF) was used to remove manganese (Mn) (II) from synthetic wastewater. The effects of different operational conditions on the filtration performance of MEUF or the membrane were studied. It was found that the transmembrane pressure has a major influence on the permeate flux and an insignificant effect on the rejection coefficient. The pe...

As one of the earliest natural refrigerants, CO2 has a lot of unique advantages, such as zero ODP, negligible GWP, excellent heat transfer coefficient, high volumetric capacity, non-toxicity, non-flammability, and cost effectiveness. Since it was proposed to applying in the mobile air-conditioning, the transcritical CO2 cycle has been attracting great attentions to replace CFC and HCFC refriger...

This paper presents a low temperature coefficient and wide range bandgap reference with high power supply rejection. High curvature compensation of this circuit is accomplished by MOSFET transistors operating in the subthreshold region. With proposed piecewise technique, extended. At same time, pre-regulator structure adopted to improve line sensitivity suppress ripple supply. The novel verifie...