purpose: the current research aims to investigate the status of knowledge sharing amongst librarians in lis, ala and alia discussion groups. methodology: through purposive sampling, librarians from three discussion groups (ala, alia & lis-iranian discussion list) who announced their intention to participate in the research (460 people) were asked to complete the questionnaire between 2010/10/23...

The development of a method for the quantitative determination sericin content ratio (SCR) is urgently needed silk refining and purification fibroin biomedical applications. In this work, series sericin/fibroin mixed samples with known SCRs were prepared by mixing initial extracted from Bombyx mori silk. Significant differences found in contents characteristic hydrophilic amino acids abundant h...

Uterine and umbilical uptakes of alanine (Ala) were measured in 10 ewes before (control) and during intravenous infusion of Ala, which increased maternal arterial Ala concentration from 115 ± 14 to 629 ± 78 μM ( P < 0.001). In 8 of these ewes, placental Ala fluxes were traced by constant intravenous infusion ofl-[3,3,3-2H3]Ala in the mother andl-[1-13C]Ala in the fetus. Rates are reported as mi...

one of the tragic consequences of the great wars is the spread of epi-demics. at the end of the first world war, flu spread in europe and soon spread in many parts of the world including iran. this event was accompanied by loss of many people in shiraz. in two notes remained from that time, one belongs to a liberal  and the other one belongs to one of the most famous physicians of shiraz, the o...

THE TITLE COMPOUND (SYSTEMATIC NAME tert-butyl 3-{[1-(methoxy-carbon-yl)eth-yl]amino-carbon-yl}-3-methyl-carbazate), C(11)H(21)N(3)O(5), is a precursor for the study of a new class of foldamer based on aza/α-dipeptide oligomerization [Abbas et al. (2009 ▶). Tetra-hedron Lett.50, 4158-4160]. The asymmetric unit consists of one mol-ecule in an extended conformation which is stabilized by inter-mo...

Some pseudo-peptide analogs of thiol proteinase inhibitors were synthesized by a conventional solution method. Among them, Suc-Ala-Val-Val-Ala-psi-(CH2-NH)-Ala-pNA (peptide 1) and Suc-Ala-Val-Val-psi-(CH2-NH)-Ala-Ala-pNA (peptide 2) showed a stronger inhibitory activity compared with parent peptide such as Suc-Ala-Val-Val-Ala-Ala-pNA. In particular, peptide 2 was about 10-fold as active as the ...