Results 71 to 80 of about 8,745 (215)

تعیین ویژگیهای دزیمتری چشمه‌های براکی‌تراپی کم انرژی بر اساس دستور کارTG- 43U1 با روشهای مختلف محاسبه دز در کد MCNP [PDF]

مجله علوم و فنون هسته‌ای, 2005
مرکز تحقیقات کشاورزی و پزشکی هسته‌ای سازمان انرژی اتمی ایران، با توجّه به کاربرد روزافزون چشمه‌های کم انرژی I125و Pd103در براکی‌تراپی سرطان پروستات، ساخت اینگونه چشمه‌ها را در دستور کار خود قرار داده است. لذا در این تحقیق بر آن شدیم تا با محاسبات دزیمتری
غلامرضا رئیس علی, فریبا مخلص گرامی, رضا خدادادی, بهناز پیروزفر   +3 more
doaj  

New para‐hydrogen cold neutron source at the Budapest Research Reactor: Monte Carlo simulations

Journal of Applied Crystallography, Volume 59, Issue 2, Page 392-403, April 2026.
This paper explores the options for upgrading the cold neutron source at the Budapest Research Reactor.The planned upgrade of the neutron guide system at the Budapest Research Reactor (BRR) provides an opportunity to enhance the performance of its cold neutron source.
Dmitrii Shapiro, Petr Konik, Mina Akhyani, Alexander Ioffe   +3 more
wiley   +1 more source

Maxwell Spectrum as a Parameter to Verify the Dose in Brain Cancer (Glioblastoma) by Boron Neutron Capture Therapy (BNCT) using Monte Carlo Method

Brazilian Journal of Radiation Sciences
To evaluate the efficiency of neutron capture therapy (BNCT) treatment in glioblastoma multiforme, it is necessary to evaluate the impact of the neutron beam on the tumor cell and find better results so that BNCT treatment is viable.
Otto Haubrich, Domingos D'Oliveira Cardoso, Marcos Paulo Cavaliere de Medeiros   +2 more
doaj   +1 more source

بررسی تأثیر نوع آلیاژ آلومینیوم بکار رفته در دیواره اتاقک یونش چاهکدار مرتبط با هوای آزاد بر پاسخ اتاقک در انرژی پرتوهای گامای Cs137، Co57 و Am241 [PDF]

مجله علوم و فنون هسته‌ای, 2007
اتاقک‌های یونش چاهکدار مرتبط با هوای آزاد در مراکز پرتو درمانی برای اندازه‌گیری شدت چشمه‌های براکی تراپی به کار می‌روند. در این کار پژوهشی با استفاده از کد مونت کارلوی MCNP-4C، اتاقک یونش چاهکدار مدل HDR-33004 شبیه‌سازی شده است.
غلامرضا رئیس علی, معصومه دهقانی مقدم, سعید حمیدی, مصطفی غفوری, عبدالرضا سلیمانیان, ارژنگ شاهور, کوروش اربابی   +6 more
doaj  

Initial study of regolith exposure ages and burial conditions on Ryugu: Cosmogenic nuclides score in two touchdowns

Meteoritics &Planetary Science, Volume 61, Issue 4, Page 565-579, April 2026.
Abstract Surface processes on the asteroid Ryugu have been investigated using cosmic‐ray‐produced radionuclides, 10Be, 26Al, and 36Cl, and stable noble gases, on eight samples returned by the Hayabusa2 spacecraft. The 10Be and 26Al along with 21Ne measurements indicate that the two Chamber A samples A0105 collected during the first touchdown (TD) were ...
Kunihiko Nishiizumi, Keisuke Nagao, Marc W. Caffee, Ryuji Okazaki, Jozef Masarik, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Hiroshi Naraoka, Hikaru Yabuta, Kanako Sakamoto, Kasumi Yogata, Toru Yada, Shogo Tachibana, Sei‐ichiro Watanabe, Yuichi Tsuda, Masanao Abe, Kazuya Kumagai, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Hirotaka Sawada, Satoshi Tanaka, Tomohiro Usui, Koji Wada, Hajime Yano, Makoto Yoshikawa, Hayabusa2 Initial Analysis Volatile Team   +30 more
wiley   +1 more source

Criticality calculations with MCNP{trademark}: A primer

, 1994
With the closure of many experimental facilities, the nuclear criticality safety analyst increasingly is required to rely on computer calculations to identify safe limits for the handling and storage of fissile materials.
Briesmeister, J. F., Harmon, C. D., II, Busch, R. D., Forster, R. A.   +3 more
core   +1 more source

Neutron Activation and Layout Optimization Experiments by MCNP Code for the Main Elements of Cement [PDF]

مجله علوم و فنون هسته‌ای, 2016
Iran is the fourth largest cement producing country in the world, and one of the pioneers in this industry. For this reason, study and further research in the fields related to the cement industry are of great importance.
S.A. Safari, S. A Moussavi Zarandi, A Jafari   +2 more
doaj  

Irrigation Monitoring With Cosmic‐Ray Neutron Sensors: Unraveling Field Experiments With Neutron Transport Simulations

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Irrigation is essential for stabilizing yields and sustaining food production, yet it faces increasing challenges, especially in water‐scarce regions. Cosmic‐ray neutron sensors (CRNS) are a promising tool in irrigation management as they can continuously monitor soil water content (SWC) over large areas.
C. Brogi, F. Nieberding, L. Scheiffele, A. Daccache, M. Schrön, H. R. Bogena   +5 more
wiley   +1 more source

Tumor‐Associated Macrophages as Therapeutic Targets: Deciphering Interaction Networks and Advancing Clinical Translation

MedComm, Volume 7, Issue 2, February 2026.
Tumor‐associated macrophages are the most abundant immune cells in the tumor microenvironment, driving malignant progression and treatment resistance. This review summarizes the protumor mechanisms of TAMs (including phagocytosis modulation, metabolic reprogramming, exosomal communication, and immune interactions), evaluates three major strategies ...
Wurihan Bao, Xiaojie Qu, Yiqi Wang, Dan Huang, Huiling Zhang, Mingyuan Dong, Han Sun, Zhaogang Yang, Xuefeng Li   +8 more
wiley   +1 more source

An Algorithm of Converting UG Model to MCNP Geometry Model

, 2011
MCNP input file has the characteristics of complicated form and is error-prone in describing geometry model. An algorithm of converting UG model to MCNP geometry model was researched and implemented through UG OPEN API and C++ programming language.
Jian Sheng Zhang, Xi Zhan
core   +1 more source