Life relies on the constant exchange of different forms energy, i.e., energy transduction. Therefore, organisms have evolved in a way to be able harvest made available by external sources (such as light or chemical compounds) and convert these into biological useable forms, such transmembrane difference electrochemical potential (???). Membrane proteins contribute establishment ??? coupling exe...

N-Acylamino acids are a new family of versatile biological surfactants capable of extracting integral membrane proteins of various topologies from the biological membrane, in many instances surpassing the efficiency of commercial detergents.

The role of biological membranes as a target in biological radiation damage remains unclear. In the present article, we show that the structural, biochemical and biophysical changes of a simple biological membrane, i.e. human erythrocyte membranes, which is altered after exposure, could be studied by membrane mimetics and conventional NMR spectrometers.

a lab-scale sbr equipped with a flat sheet membrane in submerged configuration that is named msbr was used for the treatment of composting leachate. it was fed by biologically treated leachate with overall 70-1360 mg/l chemical oxygen demand (cod). the values of ph, electrical conductivity (ec), and dissolved oxygen (do) were monitored routinely. however, analysis of total cod, soluble cod (sco...

background: soluble microbial products (smps) have an effective role on fouling of membrane in bioreactors (mbrs). the aim of this study was to survey the role of smps on mbrs used in treating municipal wastewater. materials: lowry and phenol sulfuric acid methods were used to measure carbohydrates concentrations and protein content, respectively. biochemical oxygen demand (bod), chemical oxyge...

in this study the catalytic dehydrogenation of ethylbenzene to styrene was investigated in a simulated tubular sodalite membrane reactor. the high quality microporous sodalite membrane was synthesized by direct hydrothermal method and characterized by single gas permeation measurements. the performance of the prepared membrane showed high potential for application in a dehydrogenation membrane ...

the effect of external magnetic and electric fields, in the range of electroporation and magnetoporation, on lucifer yellow (ly) fluorescence in the absence of cells is studied. electric-field-induced quenching and magnetic field-induced increase are observed for fluorescence intensity of ly. regard to the fact that the variation of field-induced fluorescence, even in the absence of cells, can ...

some wastes especially wastes of food industries need to be treated in order to recover some value-added products. one of these valuable products is biological pesticides. today, the most successful biological pesticides are produced by gram-positive, rod-shape bacteria, the genus bacillus that produces crystalline endotoxin proteins during spore formation. these toxins will be activated when t...

In recent years, with the continuous advancement of industrialization and economic globalization, oil spill pollution incidents have become more frequent, among which marine is most prominent. If a large amount oily sewage not treated in time, it will pose great threat to safety ecology. this work, natural biological materials were used prepare PDA-HAP hydrogel, membrane was by freezing salting...

Supramolecular chemistry has garnered important interest in recent years toward improving therapeutic efficacy via drug delivery approaches. Although self-assemblies have been deeply investigated, the design of novel drugs leveraging supramolecular is less known. In this contribution, we show that a Low Molecular Weight Gel (LMWG) can elicit cancer cell apoptosis. This biological effect results...