B[e] stars are massive B type emission line in different evolutionary stages ranging from pre-main sequence to post-main sequence. Due their mass loss and ejection events these objects deposit huge amounts of energy into environment enrich it with chemically processed material, contributing significantly the chemical dynamical evolution host galaxies. However, large-scale environments enigmatic...

A practical and green method for the synthesis of 5H-dibenzo[b,i]xanthene-tetraones and spiro[dibenzo[b,i]xanthene-13,3'-indoline]-pentaones by the condensation of 2-hydroxynaphthalene-1,4-dione with aldehydes or isatins, respectively, in the presence of a catalytic amount of cellulose sulfuric acid (CSA) under solvent-free conditions at 100 °C is described. The significant features of this pro...

In order to study the clinical, serological, and morphological evolution of chronic hepatitis B virus infection in childhood, a prospective study has been carried out. A total of 90 children with a chronic infection were followed up for a mean (SD) of 3 (1.8) years. At the beginning of the study, 61 children were asymptomatic and 77 were household contacts of chronic carriers. Serologically 77 ...

The comparison of B-meson production cross sections as the results of PYTHIA code and Quark Gluon String Model (QGSM) is carried out for energies of proton colliders: Sp ¯ (p)S, Tevatron and LHC. Model predictions are based on the idea of supercritical Pomeron exchanges with the phenomenological intercept ∆ P (0)=0,3 for heavy quark production. Transverse momentum spectra of B-mesons are also c...

Drug Utilization Evaluation (DUE) studies facilitate assessing the appropriateness and rational use of medications.The goal of the present study was to evaluate Amphotericin B usage in neutropenic patients. A prospective DUE study was performed in Hematology-Oncology and Stem Cell Transplantation wards at Taleghani hospital for one-year. National comprehensive cancer network, clinical practice ...