An attempt has been made to partially characterize the substance responsible for the rhythmic incorporation of 35S (inorganic sulfate) in the course of the cell cycle in early Limnaea embryos. This trichloroacetic acid (TCA) insoluble substance is partly pronase sensitive, and dissociable into two fractions after treatment with NaCl. One of these remains TCA-insoluble while the other is TCA sol...

a new approach for the synthesis of prussian blue nanoparticles using the cationic surfactant cetyl pyridinium chloride (cpc) as capping agent has been developed in the present work. powder x-ray diffraction, transmission electron microscopy, uv–vis absorption spectra, and ir spectroscopy were employed to characterize the product. the tem image showed that the prussian blue nanoparticles with d...

Normal Rana pipiens gastrulae show more incorporation of isotopically-labelled galactose and glucosamine into TCA-insoluble materials than blastulae. Interspecific hybrid embryos which undergo developmental arrest at the onset of gastrulation often synthesize reduced amounts of galactose- and glucosamine-labelled materials. These materials are high-molecular weight, but not collagen. After pron...

This communication reports the formation of complex Langmuir monolayer at the air-water interface with the water-soluble N-cetyl N,N,N-trimethyl ammonium bromide (CTAB) molecules when interacted with the stearic acid (SA) molecules. The reaction kinetics of the formation of the CTAB-SA complex was monitored by observing the surface pressure versus time graph. Multilayered LB films of this compl...

Background: Alcohol is a potent teratogen and alcohol use in pregnancy and the periconception period can cause many complications in mother, fetus and neonate.  Discussion: Alcohol in the mother's blood passes through the placenta to the baby through the umbilical cord. Drinking alcohol during pregnancy can cause miscarriage, stillbirth, and a range of lifelong disorders. Alcohol-related birth ...

A new nanocomposite based on conducting polyaniline (PANI) and Algerian montmorillonite clay dubbed Maghnite is proposed to combine thermal properties (Mag). The PANI-Mag nanocompo-sites samples were made by in situ polymerization with CTABr (cetyl trimethyl ammonium bromide) as the galleries' organomodifier. In terms of ratio, electrical obtained nanocomposites are investigated. As amount incr...