Polyethersulfone (PES)-based anion exchange blend membranes were prepared from quaternized-PES (Q-PES) and N-Methyl-2-pyrrolidone (NMP) casting solutions with water as coagulant via non-solvent induced phase inversion. The compatibility of the blend system was investigated through thermodynamic studies while membrane formation was determined using the cloud point techni...

Conductive flexible hydrogel composites were printed on paper substrates using a functional ink, whichwas designed and formulated for screen-printing. The inkswere prepared using abundant and eco-friendlymaterials by blending carbon fibers into thematrix of a water-soluble cellulose derivative, carboxymethyl cellulose. For an optimal concentration of carbon fibers (10wt.%), the printed patterns...

Electrical constants of the plasma membrane of the Fundulus egg have been measured with microelectrodes by the transient method. No consistent and significant membrane potential was measured. Membrane capacity averages 0.63 microF/cm.(2) for both unactivated and activated eggs. Membrane resistance averages 3450 ohm-cm.(2) in the unactivated eggs, but increases 2 to 7 times to an average of 13,2...

Using a combination of the quartz crystal microbalance and a corresponding physical model for the compound resonator, the viscoelastic properties of polymer films have been studied. By using a compensated phase-locked oscillator system, both resonant frequency and resistance (motional resistance of the Butterworth-Van Dyke equivalent circuit) can be measured simultaneously. The behavior of resi...

expansible soils are those which will suffer considerable swelling and volume change when subjected to water. the resulting swelling pressure may cause complete destruction of such light structures as irrigation canal linings, floor slabs, etc. based upon previous investigations, swelling of clayey soils has been blamed for failure of many irrigation canals in iran and in other countries of the...