A rapid procedure for the purification of ferredoxin from clostridia using polyethyleneimine

Nondenaturing procedure for rapid preparation of ferredoxin from Clostridium pasteurianum.

Lovcnberg and Williams (1‘1 have reported that, when a solution of Clostridium pastewianum ferredoxin in 90% ammonium sulfate is treated on a column of DEAE-cellulose, ferredoxin is retained by the column. They showed t,hat, ferredoxin is eluted when the ammoniuni sulfate concentration is lowered to about 35c/, saturation. Thcsc observations suggested the method described in this paper for puri...

the use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach

abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...

Residue of horse serum purification as a nitrogen source for growth of microorganisms, l-Clostridia

a study on thermodynamic models for simulation of 1,3 butadiene purification columns

attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...