an efficient protocol for the selective oxidation of primary alcohols to aldehydes withh5io6/v2o5 in ionic liquid [bmpy][pf6] has been developed. high yields of the products, mildreaction conditions and simple experimental procedure make this protocol complementary tothe existing methods. the catalyst can be reused for several times without obvious loss of thecatalytic activity.

A 30-year-old healthy man came to our hospital with complaints of red, hot, and painful upper extremities which spontaneously appeared. These manifestations worsened with exercises and heat, but were alleviated by rest and cooling of the hands. There were 2 similar previous episodes of short duration. The patient was a healthy, non-alcoholic, non-smoker with no history of using medicine. ...

introduction teachers are one of the groups that in addition to teaching the students can have a role in control and identification of child abuse and violence in schools. certainly, before doing any action and choose an approach to reduce misbehavior, we should be aware of situation, how and prevalence of child abuse in schools. the present study aims to investigate the prevalence and types of...

multiple adhesive coating is a controversial topic, especially in primary dentition that should be clarified. we evaluated the effect of multiple consecutive adhesive resin coatings on the microshear bond strength (μsbs) of composite resin to primary tooth dentin utilizing a filled (adper single bond plus) and an unfilled (adper single bond) adhesive resin.thirty extracted primary canines were ...

this in-vitro study sought to assess the push-out bond strength of a total etch and 2 self-etch bonding systems to intracanal dentin of primary anterior teeth (pat).thirty-six primary anterior teeth were randomly divided into 3 groups of 5(th) generation (single bond 2), 6(th) generation (clearfil se) and 7(th) generation (single bond universal) bonding agents. the canal orifice was restored wi...

incomplete adaptation of stainless steel crown margins leads to microleakage. the aim of this study was to evaluate the effect of tooth preparation on microleakage of stainless steel crowns (sscs) placed on mesiodistally reduced primary mandibular first molars.in this in vitro study, 60 primary mandibular first molars with reduced mesiodistal dimension were selected. pulp cavities were filled w...

objective: this study proposed a model for provision of an effective universal coverage for mental health services based on global and national experiences, available resources and the nature of primary health care system of iran to reduce the burden of mental health conditions. method: a framework with prioritized mental and social health services was devised through a review of literature and...

statement of problem: primary teeth discoloration can cause mentally and socially unpleasant effects in children. this can also be a sign of systemic disease. despite the importance of this subject, a comprehensive study has not been performed yet. purpose: the aim of this study was determining the frequency of different types of primary teeth discoloration. materials and methods: in this cross...

conclusions a comparison of our results with those obtained from other centers in both western and asian countries (which reported cca in 3.6% - 36.5% of patients with psc), shows that the incidence of cca in the patients we studied is intermediate. results of the 181 patients, 16 were found to have cca, two of whom had been diagnosed after pathologic study of the explanted livers. therefore it...

primary sjögren's syndrome (pss) is a common autoimmune disease involving abnormal th17 activation. the aim of the current study was to investigate the immunosuppression effect of cyclosporine a (cys a), a potent immunosuppressor on the proliferation and activation of t cells, on the activation of th17 cells. blood samples from both inactive and active pss patients as well as healthy controls w...