APMP process has been conventionally used to produce writing and printing papers. Maragheh Paper Industries Company (MPIC) was first company in Iran which started producing alkaline peroxide mechanical pulp (APMP) on a new Andritz 50000 tones/year at its mill in Maragheh city followed by establishment of another 50000 tones/year in Kermanshah city, Iran. Due to lack of required chemicals for th...

A predicted GTP-binding protein from the hyperthermophilic archaeon Sulfolobus solfataricus, termed SsGBP, has been cloned and overexpressed in Escherichia coli. The purified protein was crystallized using the hanging-drop vapour-diffusion technique in the presence of 0.05 M cadmium sulfate and 0.8 M sodium acetate pH 7.5. A single-wavelength anomalous dispersion data set was collected to a max...

nowadays service industry plays an essential and significant role in economic growth and development of nations, while the role and importance of insurance industry as a supporting base of other industries is apparent. on the other hand, the world of insurance is rapidly changing and getting competitive and correct understanding of customers' requirements and their satisfaction are essentials f...

Extraction ofRhodospirillum rubrum chromatophores by LiCl in the presence of ATP results in more than 95% loss of both ATP synthesis and hydrolysis activities. The lost activities are completely restored when the LiCl-ATP extract is recoupled to the LiCl-depleted membranes. The factor present in this LiCl-ATP extract, has been purified by ammonium sulfate precipitation and by gel filtration thr...

phosphoryl containing ligand tri-n-octylphosphine oxide (topo) in dichloromethane has been used as an extracting agent for tetravalent thorium and trivalent europium ions from their 1 m sodium nitrates. the equilibrium data reveal that both ions are extracted as the complexes at 1:3 metal/ligand ratio. the values of conditional extraction equilibrium constant (kex) show the superior extractive ...