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تعداد نتایج: 6209227 فیلتر نتایج به سال:
abstract: sayyed mohammad tabatabaee is accounted as one of the effective persons in iran contemporaneoushistory and his role in the events of iran constitution revolution is inevitable. sayyed mohammad tabatabaee from the time of naser al din shah qajar and arrival to iran, informed of the advantages and the basis of constitution, was in the thought of making the iran rule as a constituti...
In this research, White spot syndrome virus (WSSV) with 105.4LD50.mL-1 inactivated with gamma irradiation at a dose rate of 14-15 kGy.sec-1 was used as a vaccine. Three hundred and sixty shrimp of Litopenaeus vannamei, medium body weight (MBW) 1.0±0.17g), were prepared and experimentally exposed. They were distributed among four groups, inclusing vaccinated-virus exposed (T1), vaccinated-nonvir...
Background: Since the low concentration and short-time treatment with sodium nitroprusside (SNP), a nitric oxide (NO)–donor, cause no harm to rat bone marrow mesenchymal stem cells (MSCs), we studied the impact of SNP on MSCs differentiation. Methods: MSCs were treated with 100 and 1000 µM of SNP for 1 hour in every 48 hours and after 5, 10, 15, and 21 days in osteogenic media. The viability an...
Background: Food intake of rats increases during pregnancy. This requires changes in the structure of the small intestine to absorb additional food. The aim of the present study was to investigate the morphological changes in the layers of small intestine in rats during pregnancy. Materials and Methods: Duodenum, jejunum and ileum of 18 pregnant Sprague-Dawley rats (day 7, 14 and 21 pregnancy) ...
Background and purpose: During present research the effects of low power helium-neon laser rediation on rabbit’s tibia after partial ostetomy were studied by quantitively histological methods. Materials and Methods: The type of the research was experimental. 42 male adult rabbits randomly divided into experimental (ex) and control (co) groups. Ëach group divided into 3 equall sub groups. Ünd...
The Match technique was used to determine chemically induced ozone loss inside the stratospheric vortex during the Arctic winter 2002/2003. From end of November 2002, which is the earliest start of a Match campaign ever, until end of March 2003 approximately 800 ozonesondes were launched from 34 stations in the Arctic and mid latitudes. Ozone loss rates were quantified from the beginning of Dec...
Carbonic anhydrase (CA) facilitates acid-base transport in several tissues. Acidosis upregulates membrane-bound SDS-resistant hydratase activity in various tissues and CA IV mRNA in rabbit kidney. This study was designed to assess whether the expression of membrane-bound CA IV isozyme in mouse placenta is regulated developmentally and by maternal ammonium chloride loading at the end of pregnanc...
Young children with history of maternal stress during pregnancy suffer from several neurological and psychological disorders in the childhood. The purpose of this study was to investigate the effect of maternal stress during pregnancy on the neural apoptosis in the newborns. Pregnant Wistar rats were divided into control and stress groups. Stress was applied on the pregnant females from day 15 ...
introduction: glycoconjugates are molecules with a carbohydrate bounded to proteins. the terminal sugars of glycoconjugates are specific identified by lectins. glycoconjugates play an important role in various developmental processes. this study examines the developmental changes in certain glycoconjugates during the development of meckel's cartilage through lectin histochemistry. materials and...
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