This work demonstrates the synthesis, characterization and application of a hyperbranched polyethyleneimine/polysulfone (HPEI/PSf) thin fi lm composite (TFC) membrane. The membrane was accessed via an interfacial polymerization of trimesoyl chloride and HPEI. The membrane samples were characterized by Fourier Transform Infrared-Attenuated Total Refl ectance (FTIR-ATR) s...

Seawater ultrafi ltration (UF) as a pretreatment of reverse osmosis (RO) process in a thermal power plant was investigated using a 100 kDa hollow fi ber membrane. The choice of the UF physical backwash conditions remains arbitrary or ensuing from a sensibility study. As the optimum must take into account the factors interactions, we led a response surface study to analy...

background: acute kidney injury (aki) is a common problem in critically ill patients and is independently associated with increased morbidity and mortality. recently, serum cystatin c has been shown to be superior to creatinine in early detection of renal function impairment. we compared estimated gfr based on serum cystatin c with estimated gfr based on serum creatinine for early detection of ...

the prevalence of chronic kidney disease (ckd), as defined by the nfk-kdoqi (the national kidney foundation kidney disease outcomes quality initiative) guidelines, is a glomerular filtration rate less than 60 ml/min/1.73 m2 or the presence of microalbuminuria. ckd is increasing worldwide, leading to an increased risk of cardiovascular disease. there is general agreement on the importance of an ...

background glomerular filtration rate (gfr) is widely estimated by serum creatinine based equations such as cockcroft-gault (cg) standardized for body surface, and an abbreviated formula derived from mdrd (modification of diet in renal disease) study. however, some studies suggested that creatinine based estimation of gfr formula can be replaced by cystatin c based formula. objectives the aim o...