OBJECTIVES Optimum viewing conditions facilitate identification of radiographic details and decrease the need for retakes, patients' costs and radiation dose. This study sought to evaluate the effects of different viewing conditions on radiographic interpretation. MATERIALS AND METHODS This diagnostic study was performed by evaluating radiograph of a 7mm-thick aluminum block, in which 10 hole...

background: pistachio is a plant that has long been cultivated in different parts of iran. pistachios are very nutritious and contain vitamins e and b, flavonoids, antioxidants, and carotenoids. since the pistachio is effective in the treatment of some neurological disorders and is indigenous to iran and considering the substantial use of this nut, it is necessary to investigate its effects on ...

In this paper, we present calculations for different parameters of quantum dot infrared photodetectors. We considered a structure which includes quantum dots with large conduction-band-offset materials (GaN/AlGaN). Single band effective mass approximation has been applied in order to calculate the electronic structure. Throughout the modeling, we tried to consider the limiting factors which dec...

Background: Pistachio is a plant that has long been cultivated in different parts of Iran. Pistachios are very nutritious and contain vitamins E and B, flavonoids, antioxidants, and carotenoids. Since the pistachio is effective in the treatment of some neurological disorders and is indigenous to Iran and considering the substantial use of this nut, it is necessary to investigate its effects on ...

dormancy of eastern dodder and african rocket seeds makes the controlof them very difficult in orchards and farms. in order to study the effective factors in dormancy breaking of these two weeds species, a factorialexperiment based on crd with three replications was conducted at the research laboratory of birjand faculty of agriculture in 2008 and 2009. treatments were: control, soaking in sulf...

qasim‘ali qayinis manaz?ir wa maraya, that has written in 11th century a.h./18th a.d., is one of the last works in muslim’s tradition of optical writings. in this work, qayini? has defined the scope of ‘ilm-i- manaz?ir and has referred some predecessor like euclid and kindi. moreover he proceeds popular topics in optical works like reflection and refraction of light, burning tools, rainbow, the...