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اهمیت سرمایش در ساختار و تحول قرص های برافزایشی خودگرانش از طریق شبیه سازی های مستقیم عددی مورد تأیید قرار گرفته است. ما در این پژوهش یک مطالعه ی دو بعدی بر روی قرص های برافزایشی خودگرانشی را برای بررسی اثرات آهنگ سرمایش در ساختار این قبیل از قرص های برافزایشی ارائه می دهیم. این قرص با استفاده از یک توصیف پارامتری ساده ی (de /dt)_cool=(-e)_cool) مربوط به تابع سرمایش، سرد می شود که e ...
واکنش بیجینلی اولین بار در سال 1893 توسط پیترو بیجینلی انجام شد. این واکنش، یک واکنش چند جزئی ساده و مفید برای سنتز دی هیدرو پیریمیدینون ها با استفاده از αو β- کتو استرها، آلدهید ها و اوره یا تیو اوره در حضور اسید های لوئیس یا اسید های معدنی است. دی هیدرو پیریمیدینون ها در سالهای اخیر، به دلیل خواص دارویی و درمانی زیاد از جمله خواص ضدویروسی، ضد باکتریایی، کاهش دهنده فشار خون و ضد توموری توجها...
Southern corroboree frogs (Pseudophryne corroboree) may look cute clambering over moss in their Australian alpine bog homes, but the tiny amphibian's bright yellow bands are a potent warning. The animals fantastically toxic and best avoided. warnings signalled by many brightly coloured creatures depend on plant pigments – carotenoids consumed diets, Phillip Byrne Aimee Silla from University of ...
objective: β-thalassemia is caused by absence or reduction of β-globin chain synthesis. one of the effective therapeutic methods for this disease can be gene therapy by viral vectors. the capacity of lentiviral vectors is approximately 8 kb, we designed a 6 kb construct containing mini lcr and β-globin gene instead of lcr region. the aim of this study is to make a recombinant lentiviruses conta...
A design algorithm is derived, for a calculating minimum allowable electrical clearances in alternating and direct current permissible equipments, which are authorized to operate in gassy mines and tunnels under Part 18 of Title 30, Code of Federal Regulations [1]. The calculated clearances apply to operations at altitudes ranging up to 12 000 ft (3658 m) above sea level. The minimum allowabl...
Beyond the effect of communication patterns on family function, a great deal of psychosocial part of life affects by this patterns. Therefore, this research was done by the aim of Prediction of early maladaptive schemas (EMS) & anger based on family communication patterns (FCP). The study method was descriptive & correlation. The population of study was all the students of Islamic Azad Universi...
Background : Gestational trophoblastic neoplasia (GTN) disease is excessive and inappropriate proliferation of trophoblast after termination of the pregnancy. Many attempts have been made to improve follow-up procedures, but no studies have evaluated Human Chorionic Gonadotrophin (HCG) as a post treatment indicator. Thus we aimed to know β-HCG variability in post treatment pregnancies. Meth...
β-lactamases are enzymes which inactivate the β-lactam antibacterial agents and are one of the major causes of resistance against these drugs. Recently there are reports on the isolation of bacteria which does not produce β-lactamase, but are resistant to penicillins. In the present study, β-laclamase production was determined using iodometric method on 150 ampicillin resistance Escherichia col...
Wnt signalling and the signal transducer and activator of transcription 3 (STAT3) are oncogenic signalling pathways which are deregulated in colorectal cancer (CRC). Here we investigated the interaction of these two pathways. Firstly, we investigated biochemical interaction by inhibiting STAT3 and β-catenin (through gene knock-down and dominant-negative TCF4 expression) in nine CRC cell lines. ...
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