It is well known that well-defined polyacrylonitrile (PAN) with high molecular weight (Mw > 106 g ̈mol ́1) is an excellent precursor for high performance carbon fiber. In this work, a strategy for initiators for a continuous activator regeneration atom transfer radical polymerization (ICAR ATRP) system for acrylonitrile (AN) was firstly established by using CuCl2 ̈ 2H2O as the catalyst and 2,21-az...

The concept of initiators for continuous activator regeneration (ICAR) in atom transfer radical polymerization (ATRP) is introduced, whereby a constant source of organic free radicals works to regenerate the Cu(I) activator, which is otherwise consumed in termination reactions when used at very low concentrations. With this technique, controlled synthesis of polystyrene and poly(methyl methacry...

Biofilm formation in Staphylococcus epidermidis is dependent upon the ica operon-encoded polysaccharide intercellular adhesin, which is subject to phase-variable and environmental regulation. The icaR gene, located adjacent to the ica operon, appears to be a member of the tetR family of transcriptional regulators. In the reference strain RP62A, reversible inactivation of the ica operon by IS256...

1 Crop Science Division, ICAR Headquarters, Krishi Bhawan, New Delhi -1100 01, India 2 Department of Crop Improvement, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur -176062, India 3 ICAR-Indian Agricultural Statistics Research Institute, New Delhi – 1100 12, India 4 ICAR-Sugarcane Breeding Institute, Coimbatore – 6410 07, Tamil Nadu, India 5 Gobind Ballabh Pant University of Agriculture...