نتایج جستجو برای: pressure driven membrane
تعداد نتایج: 996194 فیلتر نتایج به سال:
Pressure-driven membrane filtration is an essential part in the juice industry as a tool for clarification and concentration due to its low-temperature treatment, high selectivity, lower energy consumption. However, fouling compromises these benefits significantly reduces performance durability, hence increasing operating maintenance costs. This paper reviews recent advances related processing ...
The zero-temperature quantum phase transition (QPT) is driven by quantum fluctuations, in contrast to the more familiar finite temperature transitions driven by thermal fluctuations. This paper demonstrates our work on two kinds of QPTs in two different materials, respectively. The first work focuses on the pressure-driven antiferromagnetic QPT in pure chromium which is a model system for study...
Continuous hydrolysis of an active pharmaceutical ingredient intermediate, and subsequent liquid−liquid (L-L) separation of the resulting organic and aqueous phases, have been achieved using a simple PTFE tube reactor connected to a miniscale hydrophobic membrane separator. An alkoxide product, obtained in continuous mode by a Grignard reaction in THF, reacted with acidic water to produce parti...
We demonstrate a nonlinear, nonequilibrium field-driven ion flux phenomenon, which unlike Teorell's nonlinear multiple field theory, requires only the application of one field: robust autonomous current-mass flux oscillations across a porous monolith coupled to a capillary with a long air bubble, which mimics a hydrophobic protein in an ion channel. The oscillations are driven by the hysteretic...
Contact resistance among the components of a polymer exchange membrane fuel cell (PEMFC) has a crucial effect on cell performance. The geometry of the endplate plays an essential role in the contact pressure distribution over the membrane electrode assembly (MEA) and the amount of contact resistance between plates. In this work, the effects of endplate geometry on the contact pressure distribut...
Theoretical studies of micro-electro-mechanical systems provide important insight into the mechanisms and optimization such devices for a range applications, including biomedical chemical engineering. Inspired by emerging applications microfluidics, unsteady viscous flow in microchannel with periodic membrane pumping modulated electro-magnetohydrodynamics is analyzed mathematical framework. The...
The quest for new transition metal dichalcogenides (TMDs) with outstanding electronic properties operating under ambient conditions draws us to investigate the 1T-HfSe2 polytype hydrostatic pressure. Diamond anvil cell (DAC) devices coupled in situ synchrotron X-ray, Raman, and optical (VIS–NIR) absorption experiments along density functional theory (DFT)-based calculations prove that (i) bulk ...
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