Results 81 to 90 of about 4,887,906 (384)
Method for the preparation of thin-skinned asymmetric reverse osmosis membranes and products thereof [PDF]
A method for preparing water insoluble asymmetric membranes from water soluble polymers is discussed. The process involves casting a film of the polymer, partially drying it, and then contacting it with a concentrated solution of a transition metal salt.
Katz, M. G., Wydeven, T. J.
core +1 more source
Highly stable graphene-oxide-based membranes with superior permeability
Increasing fresh water demand for drinking and agriculture is one of the grand challenges of our age. Graphene oxide (GO) membranes have shown a great potential for desalination and water purification.
K. Thebo+5 more
semanticscholar +1 more source
Universal Negative Poisson Ratio of Self Avoiding Fixed Connectivity Membranes [PDF]
We determine the Poisson ratio of self-avoiding fixed-connectivity membranes, modeled as impenetrable plaquettes, to be sigma=-0.37(6), in statistical agreement with the Poisson ratio of phantom fixed-connectivity membranes sigma=-0.32(4).
A. Cacciuto+38 more
core +3 more sources
The protonated form of butyrate, as well as other short‐chain fatty acids (SCFAs), is membrane permeable. In acidic extracellular environments, this can lead to intracellular accumulation of SCFAs and cytosolic acidification. This phenomenon will be particularly relevant in acidic environments such as the large intestine or tumor microenvironments ...
Muwei Jiang+2 more
wiley +1 more source
Evaluation of drying performance of sports bras
Introduction Fabrics used for manufacturing sports bras have to be lightweight, breathable, have fast drying behaviour, and moisture management properties (Uttam, 2013).
Ivona Jerkovic+5 more
doaj +1 more source
Effects of precipitation conditions on the membrane morphology and permeation characteristics [PDF]
[[abstract]]The permeability and permselectivity of asymmetric and particulate membranes towards glucose and proteins of various molecular sizes were studied.
Lin, Dong-tsamn
core +1 more source
A stepwise emergence of evolution in the RNA world
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley +1 more source
Recent theoretical advances in elasticity of membranes following Helfrich's famous spontaneous curvature model are summarized in this review. The governing equations describing equilibrium configurations of lipid vesicles, lipid membranes with free edges,
Ou-Yang, Z. C., Tu, Z. C.
core +1 more source
The preparation and characterization of alumina membranes with ultra-fine pores : Part 4. Ultrafiltration and hyperfiltration experiments [PDF]
The rejection characteristics of three types of alumina membranes for polyethylene glycol (PEG) polymers and dextrans soluted in water have been investigated. If the temperature at which the membranes are treated is increased, the pore size increases and
Burggraaf, A.J., Leenaars, A.F.M.
core +4 more sources
We introduce a new computability model, of a distributed parallel type, based on the notion of a membrane structure. Such a structure consists of several cell-like membranes, recurrently placed inside a unique “skin” membrane. A plane representation is a
G. Paun
semanticscholar +1 more source