the catalytic oxidation of toluene to benzoic acid in the liquid phase has been studied in an un-stirred tank reactor. low concentration of acetic acid was added in order to increase the solubility of the catalyst in toluene. the dependence of the rate of reaction on the concentration of toluene catalyst and oxygen pressure was studied. it has been suggested that liquid phase oxidation of tolue...

background: immunization against diphtheria, tetanus and pertussis (dtp) has long been applied in iran using whole cell vac­cine. despite the role of whole cell dtp (dtwp) vaccine in reduction of mortality as a result of disastrous diseases such as diphtheria, tetanus, and pertussis, serious local and systemic complications have been attributed to these vaccines. this study was performed to det...

thionyl chloride (or oxalyl chloride) has been used as an efficient and cheap acid activator for one-pot synthesis of β-lactams in good to excellent yields by reaction between imines and acids in the presence of triethylamine at room temperature.

The authors have shown accelerated endothelialization on polyethylene terephthalate (PET) grafts preclotted with autologous bone marrow. Bone marrow cells have a subset of early progenitor cells that express the CD34 antigen on their surfaces. A recent in vitro study has shown that CD34(+) cells can differentiate into endothelial cells. The current study was designed to determine whether CD34(+...

OBJECTIVES This paper sought to determine if there were an association between drain placement and the incidence of wound complications. MATERIALS AND METHODS A single-center institutional review board-approved retrospective study between 2001 to 2008, comparing 680 kidney transplant patients who either had a drain placed or were left undrained. Linear regression modeling was used to adjust t...

background : since the introduction of silicone based medical devices in to clinical practice, several reports appeared in the medical literature regarding their adverse effects. however, there are few reports of immunologic reactions to these implants. case presentation : a case of systemic reaction to a breast implant inserted for immediate breast reconstruction in a breast cancer patient is ...

dear editor-in-chief we read with interest the study by khazaei et al. (1) in which the authors have nicely concluded that pcr is more sensitive test than ziehl-neelsen staining and histo-pathological examination for the diagnosis of tuberculosis (tb). they have rightly pointed to use pcr, selectively, in acidfast bacilli negative paucibacillary forms of tb. however, we intend to highlight few ...