نتایج جستجو برای: well type chamber

تعداد نتایج: 2691192  

Journal: :Journal of cancer research and therapeutics 2005
Narayan Prasad Patel Bishnu Majumdar V Vijiyan Pradeep K Hota

The Gammamed Plus 192Ir high dose rate brachytherapy sources were calibrated using the therapy level ionization chambers (0.1 and 0.6 cc) and the well-type chamber. The aim of the present study was to assess the accuracy and suitability of use of the therapy level chambers for in-air calibration of brachytherapy sources in routine clinical practice. In a calibration procedure using therapy ion ...

Journal: :Journal of Clinical Investigation 1926

Journal: :مهندسی بیوسیستم ایران 0
امین اله معصومی عباس همت علی شهریان

to reduce the storing space and handling costs for hay/straw bales, recompressing the original bales after adequate hay drying is recommended. in this project, a recompression machine was designed, constructed and evaluated. solidwork and nastran software were employed to model, and to analyze the stresses in the components of the machine, respectively. the components of the machine consisted o...

Journal: :معماری و شهرسازی 0
عیسی حجت استاد دانشکده معماری، پردیس هنرهای زیبا، دانشگاه تهران سعید گلستانی دانشجوی دکتری معماری، دانشگاه هنر اصفهان مهدی سعدوندی استادیاردانشکده معماری، دانشگاه هنر اصفهان

there are some evidences on elamite seals that show iranian people had enough knowledge to construct small dome on cylindrical spaces like silo in the third millennium bc. but the foundations of large dome over square spaces were formed in the parthian period. bazeh-hur dome chamber with the corners of wood in khorasan province is the most ancient dome from the sasanian dynasty. since the sasan...

2011
Joseph A. Jurcisek Amanda C. Dickson Molly E. Bruggeman Lauren O. Bakaletz

The chronic nature of many diseases is attributed to the formation of bacterial biofilms which are recalcitrant to traditional antibiotic therapy. Biofilms are community-associated bacteria attached to a surface and encased in a matrix. The role of the extracellular matrix is multifaceted, including facilitating nutrient acquisition, and offers significant protection against environmental stres...

Journal: :مهندسی بیوسیستم ایران 0
سید مهدی هاشمی نسب سید احمد طباطبایی فر مهدی قاسمی ورنامخواستی سعید مینایی محمدرضا علیزاده

whitening as one of the stages in rice processing is performed following dehusking. studies on performance of milling machines prevailent in mazandaran province, as the biggest rice producer province in iran, are essential and helpful in reducing rice losses. a research was undertaken to examine the effects of variety (tarom, hibrid, and fajr), milling machine (frictional and abrasive baed mill...

Ali Jabbari arfaei Ali Rajabi Mohsen bakhshandeh

Introduction: Quality assurance is essential for obtaining the best achievable tumor control, avoiding unnecessary side effects, accuracy and safety during performing High Dose Rate (HDR) Brachytherapy (BT). Quality assurance is extremely important because HDR BT procedures are performed quickly, with high doses given in a short time period, with little opportunity for correcti...

Journal: :Epj Web of Conferences 2021

The article proposes a mathematical model of radon accumulation in chamber, which takes into account the hereditary properties environment migrates. equation is fractional Riccati with derivative variable order Gerasimov-Caputo type, taking heredity, as well nonlinearity, responsible for mechanisms entry chamber. obtained curves process are compared real data. It shown that described work gives...

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