Synthesis and Characterization of Lithium-Conducting Composite Polymer-Ceramic Membranes for Use in Nonaqueous Redox Flow Batteries.

Redox flow batteries (RFBs) are a burgeoning electrochemical platform for long-duration energy storage, but present embodiments are too expensive for broad adoption. Nonaqueous redox flow batteries (NAqRFBs) seek to reduce system costs by leveraging the large electrochemical stability window of organic solvents (>3 V) to operate at high cell voltages and to facilitate the use of redox couples that are incompatible with aqueous electrolytes. However, a key challenge for emerging nonaqueous chemistries is the lack of membranes/separators with suitable combinations of selectivity, conductivity, and stability.

[Ultrastructure of dendritic spines in the somatosensory cortex of rat's brain following 5- and 33-day hypergravity].

Electron microscopy examination of layers III-IV in the somatosensory cortex of rat's brain following 5- and 33-day and repeated 5-day exposure to 2 G revealed ultrastructural changes in dendritic spines, synapses, axon terminals and nervous cell body suggesting their functional activation and increase of the afferent input from hindlimb mechanoreceptors Hypertrophy of the acicular apparatus (AA) due to hypergravity, growth of AA destruction as a result of 33-day exposure and its ample evidence after repeated 5-day exposure lead to the conclusion that AA ultrastructure can be used for assessing afferent input into the brain cortex of animals exposed in a changed field of gravity.

[The characteristics of the chemical composition and biological activity of Proteus antigens isolated using hydroxylamine].

The comparative study of the chemical composition and biological properties of antigens isolated from Proteus vulgaris with the use of hydroxylamine and by two classical methods (Boivin's and Westphal's methods) has been made. As shown in this study, the treatment of bacteria with hydroxylamine makes it possible to obtain antigenic complexes with lower toxicity. At the same time hydroxylamine produces no denaturing effect on lipopolysaccharides and protein fractions of bacterial cells.