PREPARATION OF LOW-FOULING POLYETHERSULFONE ULTRAFILTRATION MEMBRANES BY INCORPORATING HIGH-MOLECULAR-WEIGHT CHITOSAN WITH THE HELP OF A SURFACTANT

Preparation of low-fouling polyethersulfone ultrafiltration membranes by incorporating high-molecular-weight chitosan with the help of a surfactant

Increasing the resistance of polyethersulfone ultrafiltration (PES UF) membrane to fouling remains a challenging endeavor when developing UF membrane.This paper concerns the incorporation of chitosan into PES UF membrane to produce low-fouling PES UF membrane.The membranes were produced by means of phase inversion with chitosan as an additive.In or

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Second-Order Nonlocal Effects Mitigation in Brillouin Optical Time-Domain Analysis Sensors by Tracking the Brillouin Frequency Shift Profile of the Fiber

We report on an additional limitation that has been found in Brillouin optical time-domain analysis (BOTDA) sensors due to the so-called second-order nonlocal effects (NLE).Second-order NLE appear in BOTDA setups that deploy a double probe waves to compensate the transfer of energy between the pump pulse and the probe wave, and are related to a spe

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