Introduction: In nuclear medicine, the use of a pixelated semiconductor detector such as CZT is an of growing interest for introducing new devices. Especially, the spatial resolution can be improved by using a pixelated parallel-hole collimator with equal holes and pixel sizes based on the pixelated detector. The purpose of this study was to compare the effect of pixelated and ...

in this paper, we calculate electron and hole impactionization coefficients in in0.52al0.48as using a monte carlo modelwhich has two valleys and two bands for electrons and holesrespectively. also, we calculate multiplication factor for electronand hole initiated multiplication regimes and breakdown voltagein in0.52al0.48as pin avalanche photodiodes. to validate themodel, we compare our simulat...

Structures consisting of cables and membranes have been of interest to engineers due to their higher ratio of strength to weight and lower cost compared to other structures. One of the challenges in such structures is presence of holes in membranes, which leads to non-uniform stress and strain distributions, even under uniform far-field deformations. One of the approaches suggested for controll...

The methanolic leaf extract of Thuja occidentalis was evaluated for possible sedative activities in mice. Sedative activity was evaluated by using hole cross, open field, thiopental sodium-induced sleeping time and elevated-plus maze (EPM) tests at 200mg/kg and 400 mg/kg.  The extract decreased the locomotor activity of mice in hole cross, open field and EPM test and showed the remarka...

abstract disease incidence and favorable condition on disease severity is evaluated. w. carpophilus isolated of infected orchards. for fungus overwintering method in buildup were carried out bud washing by centrifuge and spot culturing on nutrient mediums. evaluation of shot hole in different areas showed that cultivars response to this disease is fixed inside of a climate but it is differ in d...

shot hole caused by wilsonomyces carpophilus is one of the main constraints to prune fruit production in iran particularly in khorasan razavi province. it causes foliage shot hole in spring and early summer; fruit-spotting and cankers on limbs and twigs during autumn rains. the fungus was isolated from the lesions of twigs and was purified on pda. the pathogenicity and virulence on detached twi...

Transitions between valence subbands resulting from hole-hole scattering in cubic semiconductors have been analyzed in the frame of Coulomb interaction of valence electrons in the Luttinger-Kohn representation. Expressions for transition rates are derived. Calculated rates for transitions between lightand heavy-hole bands are presented for germanium. Hole-hole scattering has remarkably differen...

A “clean” black hole is a black hole in vacuum such as the Schwarzschild black hole. However in real physical systems, there are matter fields around a black hole. Such a black hole is called a “dirty black hole”. In this paper, the effect of matter fields on the black hole and the greybody factor is investigated. The results show that matter fields make a black hole smaller. They can increase ...

The methanolic leaf extract of Thuja occidentalis was evaluated for possible sedative activities in mice. Sedative activity was evaluated by using hole cross, open field, thiopental sodium-induced sleeping time and elevated-plus maze (EPM) tests at 200mg/kg and 400 mg/kg.  The extract decreased the locomotor activity of mice in hole cross, open field and EPM test and showed the remarka...