in this paper, the removal of phenol by using aqueous solution in a low pressure reverse osmosis membrane was investigated. the effect of feed pressure, feed concentration, feed flow rate and feed ph on phenol rejection was investigated. the results showed that feed ph is the most affective parameter on the phenol rejection. rejection of phenol increased with increasing ph from 2 to 10 under th...

In this paper, the removal of phenol by using aqueous solution in a low pressure reverse osmosis membrane was investigated. The effect of feed pressure, feed concentration, feed flow rate and feed pH on phenol rejection was investigated. The results showed that feed pH is the most affective parameter on the phenol rejection. Rejection of phenol increased with increasing pH from 2 to 10 under th...

Waves from hurricanes Lili and Isidore were measured using an ADCP directional wave gauge and an independent pressure sensor. The array is part of Louisiana State University’s WAVCIS ocean observing system located in the northern Gulf of Mexico. Data demonstrate the effects of strong storm surge induced currents on wavenumber. We investigate the effect of Doppler shifting of wavenumber to wave ...

constant rate of strain (crs) consolidation is a rapid test method used for determination of compressibility of clayey soils. in a crs test, the appropriate strain rate is selected based on pore water pressure ratio, i.e. the ratio of pore pressure to total stress. in the present study, to investigate the effect of strain rate on variation of relative pore water pressure, four different clay sa...

Recent reports have provided evidence for the separation of red cells and plasma within the kidney (1-3). Pappenheimer and Kinter have proposed an ingenious theory of plasma skimming to explain this phenomenon (2). According to these authors the energy for the separation is derived from the arterial pressure. Hence, there should be less separation at low pressure, and more at higher pressure. T...