A systematic study of pseudotemary systems made of salted water, pentanol and SDS is presented for salt concentrations ranging from 20 to 80 g/l of Nacl. In the dilute part of the phase diagram, the system with the lowest salt concentration is known to present a continuous phase transition between phases of randomly interconnected membranes, namely a sponge (symmetric) and an asymmetric phase, ...

the main goal of this work was to synthesize and evaluate the effect of dehydration temperature on the potential application of hydroxy sodalite zeolite membrane. hydroxy sodalite zeolite membranes were synthesized via direct hydrothermal method onto a tubular alumina support without seeding in a hot air oven. the synthesized membranes were characterized by x-ray diffraction (xrd) and scanning ...

objective: different techniques have been suggested for the repair of bone defects at the injured sites. use of biomembranes, or application of plasma rich in growth factor (prgf) at the site of proliferation of osteoblasts are among the suggested techniques. the current study aimed to compare the biocompatibility of human periodontal ligament fibroblasts (hplf) cultured on hypro-sorb f, perica...

The gas-liquid membrane contactor (GLMC) is a promising alternative gas absorption/desorption configuration for effective carbon dioxide (CO2 ) capture. The physicochemical properties of membranes may synergistically affect GLMC performances, especially during the long-term operations. In this work, commercial polypropylene (PP) and polyvinylidene fluoride (PVDF) hollow fiber (HF) membranes wer...

Cell-cell fusion is essential for fertilization and organ development. Dedicated proteins known as fusogens are responsible for mediating membrane fusion. However, until recently, these proteins either remained unidentified or were poorly understood at the mechanistic level. Here, we review how fusogens surmount multiple energy barriers to mediate cell-cell fusion. We describe how early prepara...

We investigate a Larson-type model of a ternary mixture of nonionic amphiphiles, water and oil confined between walls or forming a membrane by performing Monte Carlo simulations on a cubic lattice. We compute the concentration profiles of water foil and the distribution of the amphiphiles with varying temperatures and distance from a solid wall. For temperatures below the critical temperature f...

We report on the mechanism of membrane fusion mediated by polyethylene glycol (PEG) and Ca(2+) by means of a coarse-grained molecular dynamics simulation approach. Our data provide a detailed view on the role of cations and polymer in modulating the interaction between negatively charged apposed membranes. The PEG chains cause a reduction of the inter-lamellar distance and cause an increase in ...

Self-organized nano-porous anodic aluminium oxide (AAO) membranes with small pore diameters were obtained by applying a low anodizing potential in sulfuric acid solutions. The pore diameters of the as-prepared AAO membranes were in the range of about 6–19 nm and the interpore distances were about 20–58 nm. Low potentials (6–18 V) were applied in anodizing processes to make such small pores. A l...

It remains an impor tant and challenging problem to characterize the interactions between biomembranes. In vitro, nonspecific interactions can lead to membrane-bound states, fusion, and budding (cf. Lipowsky, 1995; Chernomord ik and Zimmerberg, 1995; and references therein) . In addition, living cells possess a variety of protein-based mechanisms for performing and regulating such tasks as endo...

Cultured callus tissue of hazel (Corylus avellana L.), which has the potency of somatic embryogenesis, was used for the study of cell ultrastructure in the course of callus growth and embryoid formation. The meristematic cells of this tissue exhibit a specific organization of rough endoplasmic reticulum (RER), stacked into extensive parallel sheets. The membranes of the aggregated RER are assoc...