Mohamed Yalpani

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The possibility of producing biospecific affinity ligands for separating cells in two polymer aqueous phase systems on the basis of cell surface antigens was investigated. Rabbit anti-human erythrocyte IgG was reacted with cyanuric chloride-activated monomethyl poly(ethylene glycol) (PEG) fractions (molecular weights approximately 200, 1900, and 5000) at(More)
Following a brief historical account of the initial difficulties of introducing modern sciences, especially the Western art of independent scientific inquiry, into Iran, using data obtained from the ISI ( an attempt is made to analyze the apparent present successes of Iranian scientists on the international science(More)
Novel aqueous polymeric two-phase systems are described. These systems are formed by mixing hydroxypropyl cellulose (molecular mass 100,000, trade name Klucel L) with poly(ethylene glycol)-co-poly(propylene glycol) copolymer [molecular mass 6,500, poly(propylene glycol) content 50% w/w, trade name Pluronic P105], in a saline buffer. The phase diagram was(More)
The boranediylation of dihydroxy compounds and exchange reactions involving R —B —O groups of a number of their O-boranediyl derivatives with lsO and 10B labelled triethylboroxines has been investigated. It has been found that in simple 1,2-dihydroxy compounds only the RB group is substituted or exchanged. In hydroxy compounds such as ninhydrin 7 and(More)
The course of Aggregation of molecules of the title compound ( lb) through different, spectroscopically discernible and chemically identifiable forms of associations could be followed by matrix isolation and thin film infrared and UV-visible spectroscopy. It was found that molecules of l b in thin films form clusters which at low temperatures interact(More)
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