t h e s p e c i a l c o n c e n t r i c a l l y b r a c e d f r a m e (s c b f) i s a c o m m o n t y p e o f s t e e l s t r u c t u r a l s y s t e m f o r r e s i s t i n g l a t e r a l l o a d i n g. t h i s t y p e o f s y s t e m p r o v i d e s t h e r e q u i r e d s t i f f n e s s a n d s t r e n g t h a t r e l a t i v e l y l o w c o s t. d e s i g n c o d e s, b a s e d o n p a s ...

determination of 1, 1-dimethylhydrazine (dmh) in air is carried out by spectrophotometry, gc or hplc analysis, but in this study dmh was analyzed by a gas sensor based on nanostructure conducting polyaniline. determination of dmh has been done very simplely and quickly in recent work. electrically conductive fibers have been prepared by polymerization of aniline on surfaces of commercial polyme...

1920x1200 abstract: background: down syndrome is the most common chromosomal abnormality due to 21 trisomy that usually is accompany with congenital heart diseases. about fifty present of children with down syndrome have heart defects. this study was designed for the aim of abundance percents of septal heart defects in children with down syndrome at imam reza and imam ali hospitals in kermansha...

introduction: β-carbolines (bcs) are heterocyclic indole alkaloids found in human body, grilled meat, alcoholic beverages and tobacco smoke. based on the present reports, there are controversies about the role of these compounds in the pathophysiology of parkinson' disease (pd). the aim of this study was to investigate the effect of norharman, a bc, in the prevention, exacerbation or creat...

a general synthetic route for the synthesis of 1,2-dihydro-1-aryl-naphtho[1,2-e][1,3]oxazine-3-one derivatives has been developed using perlite-so3h nanoparticles as efficient catalyst under both microwave-assisted and thermal solvent-free conditions. the combination of 2-naphthol, aldehyde and urea enabled the synthesis of 1,2-dihydro-1-aryl-naphtho[1,2-e][1,3]oxazine-3-one derivatives in the ...

in order to study the effects of post – anthesis heat stress on source of six wheat genotypes (vee/nac, chamran, s79-10, dez, fong and kaveer), two separate field experiments were conducted as delayed as against optimum sowing dates in ahvaz coditions. plants in delayed sowing date experienced heat stress at post-anthesis growth stage. as study of grain yield indicated that the highest and the ...

presence of antibiotic resistance markers has always been considered as one of the main safety concerns in transgenic plants and their derived products. elimination of antibiotic selectable markers from transgenics is a major hurdle for finding efficient and safe candidates. herbicide tolerance genes might be attractive alternatives. in this study, a variant form of the 5-enoylpyruvyl shikimate...

conclusions the positive interaction between depression and cad was probably mediated by inflammatory mechanisms. background severe depression may be accompanied by immune dysregulation and is also associated with increased risk of coronary artery disease (cad). objectives we investigated serum levels of 10 cytokines and their relationship with depression in patients with cardiovascular disease...

background: we aimed to assess the effects of anise on quality of life (qol) of patients with functional dyspepsia (fd) in a double-blind randomized clinical trial. materials and methods: of 180 patients attending the gastroenterology clinic, 107 ones with the diagnosis of postprandial distress syndrome according to rome iii criteria were enrolled. they were randomized into two groups, anise an...

a simple, green and efficient method for synthesis of 2,4,5-trisubstituted imidazoles is described via three-component cyclocondensation of benzil or benzoin, aldehyde and ammonium acetate by using the nano sio2-supported ferric hydrogen sulfate (fhs/sio2), as a catalyst, under solvent-free conditions. the nano sio2 support and catalyst were characterized by x-ray diffraction (xrd), transmissio...