Asymmetric supported dense lanthanum tungstate membranes

Supported Dense Ceramic Membranes for Oxygen Separation

Supported liquid membranes : instability effects

The instability behaviour of several supported liquid membranes (SLMs) has been studied for a system in which nitrate ions are removed from an aqueous feed phase and concentrated in a stripping phase. The composition of the aqueous phases and of the membrane liquid has been determined after the aqueous phases had flowed parallel to the membranes for a period of six days. From the experimental d...

Selective Deposition of Lanthanum in Mammalian Cardiac Cell Membranes

Perfusion of beating false tendons of the dog heart with ionic lanthanum produced drastic but reversible modifications of the excitability and the transmembrane action potential of Purkinje cells. Ultrastructural examination of these cells revealed the appearance of a fine extracellular precipitate detectable on unstained sections. In addition, specimens perfused with La(+++) showed a striking ...

Dynamic Analysis of Asymmetric Structures Supported by a Sliding Foundation

Electroporation of asymmetric phospholipid membranes.

As plasma membranes of animal cells are known to be asymmetric, the transmembrane lipid asymmetry, being essential for many membranes' properties and functions, should be properly accounted for in model membrane systems. In this paper, we employ atomic-scale molecular dynamics simulations to explore electroporation phenomena in asymmetric model membranes comprised of phosphatidylcholine (PC) an...