Two simple protocols for the synthesis of tetrahydrobenzo[a]xanthenes-11-ones using nano silica phosphoric acid are reported. Short reaction times, high yields, reusability of catalyst and easy workup are some advantages of these protocols.

inter simple sequence repeat (issr) markers were used to assess the genetic diversity among 23 outcross and self pollinated populations of fennel collected from different geographical regions of iran and some european countries. the experiment was carried out to determine the effect of self-pollination on morphological traits and genetic diversity in the next generation. fifteen primers produce...

carpal tunnel syndrome is known as an industrial new epidemic. in many of jobs, the same motions of hand are repeated thousands of times a day.  each day the number of people with the syndrome is increasing. clerks, workers in food preparation and packaging, and secretaries of large supermarkets have a high risk for suffering from this syndrome. in fact, all people who flex and extend their wri...

Introduction: Elderly patients suffer disproportionally from a number of chronically painful conditions, with arthritis leading the list. Osteoarthritis (OA) is the most common joint disorder and the most prevalent cause of joint pain across the spectrum of middle age to elderly. Enhancing behavioral intention toward self-care for OA, previously known as proximal predictor of self-care, is one ...

Although scientific forum has obliged its members to hide their presence particularly while they are discussing research outcomes to avoid personal biases, a recent trend is encouraging writers to demonstrate their identity as the author of the text through the use of first person pronouns in order to take responsibility for the content. Therefore, the present study focuses on intermediate and ...