Results 21 to 30 of about 2,675,787 (276)

Controllable photomechanical bending of metal-organic rotaxane crystals facilitated by regioselective confined-space photodimerization

Nature Communications, 2022
The preparation of materials that display macro-mechanical responses to external stimuli is challenging. Here, the authors synthesize metal-organic rotaxane frameworks that contain photoactive axles as linkers; light irradiation triggers ...
Jun-shan Geng, Lei Mei, Yuan-yuan Liang, Li-yong Yuan, Ji-pan Yu, Kong-qiu Hu, Li-hua Yuan, Wen Feng, Zhi-fang Chai, Wei-qun Shi   +9 more
doaj   +1 more source

Treatment planning with a 2.5 MV photon beam for radiation therapy

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The shallow depth of maximum dose and higher dose fall‐off gradient of a 2.5 MV beam along the central axis that is available for imaging on linear accelerators is investigated for treatment of shallow tumors and sparing the organs at risk (OARs) beyond it.
Navid Khaledi, Chris Hayes, Louise Belshaw, Mark Grattan, Rao Khan, James L. Gräfe   +5 more
wiley   +1 more source

Validation of pencil beam scanning proton therapy with multi‐leaf collimator calculated by a commercial Monte Carlo dose engine

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract This study aimed to evaluate the clinical beam commissioning results and lateral penumbra characteristics of our new pencil beam scanning (PBS) proton therapy using a multi‐leaf collimator (MLC) calculated by use of a commercial Monte Carlo dose engine.
Yuki Tominaga, Yusuke Sakurai, Junya Miyata, Shuichi Harada, Takashi Akagi, Masataka Oita   +5 more
wiley   +1 more source

Top quark mass measurements at the $$t\bar{t}$$ t t ¯ threshold with CEPC

European Physical Journal C: Particles and Fields, 2023
We present a study of top quark mass measurements at the $$t\bar{t}$$ t t ¯ threshold based on CEPC. A centre-of-mass energy scan near two times of the top quark mass is performed and the measurement precision of top quark mass, width and $$\alpha _S$$ α
Zhan Li, Xiaohu Sun, Yaquan Fang, Gang Li, Shuiting Xin, Shudong Wang, Yiwei Wang, Yuan Zhang, Hao Zhang, Zhijun Liang   +9 more
doaj   +1 more source

Kinetic Mechanism of La3+ Reaction in LiCl-KCl-LaCl3 Molten Salt System

He huaxue yu fangshe huaxue, 2022
In this paper, the reaction kinetic mechanism of La3+ was studied in the LiCl-KCl eutectic salt at various temperatures. First, the diffusion coefficient of La3+(D) measured by cyclic voltammetry(CV) increases from 3.06×10-5 cm2/s to 6.08×10-5 cm2/s ...
LUO Wan, LIU Ya-lan, YANG Da-wei, JIANG Shi-lin, ZHAO Xiu-liang   +4 more
doaj   +1 more source

Evaluation of an EPID in vivo monitoring system using local and external independent audit measurements

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The aim of this work was to evaluate the SunCHECK PerFRACTION, the software for in vivo monitoring using EPID images. Materials/Methods First, the PerFRACTION ability to detect errors was investigated simulating two situations: (1) variation of LINAC output and (2) variation of the phantom thickness.
Samuel Ramalho Avelino, Juliana Rosada Dias, Taís Marques Peron, Gabriel Souza Vidal   +3 more
wiley   +1 more source

J-PARC hadron experimental facility extension project * [PDF]

EPJ Web of Conferences, 2022
The J-PARC Hadron Experimental Facility was constructed with an aim to explore the origin and evolution of matter in the universe through experiments with intense particle beams.
Sakuma Fuminori, Aoki Kazuya, Fujioka Hiroyuki, Gogami Toshiyuki, Hidaka Yoshimasa, Hiyama Emiko, Honda Ryotaro, Hosaka Atsushi, Ichikawa Yudai, Ieiri Masaharu, Isaka Masahiro, Ishii Noriyoshi, Ishikawa Takatsugu, Komatsu Yusuke, Komatsubara Takeshi, Lim GeiYoub, Miwa Koji, Morino Yuhei, Nagae Tomofumi, Nagao Sho, Nakamura Satoshi N., Nanjo Hajime, Naruki Megumi, Nemura Hidekatsu, Nomura Tadashi, Noumi Hiroyuki, Ohnishi Hiroaki, Ozawa Kyoichiro, Sawada Shinya, Sekihara Takayasu, Shim Sang-In, Shiomi Koji, Shirotori Kotaro, Tajima Yasuhisa, Takahashi Hitoshi, Takahashi Toshiyuki, Takeuchi Sachiko, Takizawa Makoto, Tamura Hirokazu, Tanida Kiyoshi, Ukai Mifuyu, Yamamoto Takeshi O., Yamamoto Yasuo   +42 more
doaj   +1 more source

Digital radiography image quality evaluation using various phantoms and software

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from visual evaluation. Methods Three commercial phantoms and a homemade phantom constructed according to the instructions given in the IAEA Human Health Series No.
Ioannis A. Tsalafoutas, Shady AlKhazzam, Virginia Tsapaki, Huda AlNaemi, Mohammed Hassan Kharita   +4 more
wiley   +1 more source

Broadband Spectral Shaping of Regenerative Amplification with Extra-Cavity Waveplate for Cross Polarized Wave Generation

Applied Sciences, 2022
We demonstrated extra-cavity gain narrowing pre-compensating in a regenerative amplifier with a multi-order triple-wavelength waveplate (WP). With a 1.117 mm thickness quartz waveplate, which was placed on the stretcher, the gain narrowing effect was ...
Baozhen Zhao, Xiaohua Zhang, Chong Lv, Qiushi Liu, Ji Zhang, Xianghao Meng, Mingjiang Ma, Guoqing Yang   +7 more
doaj   +1 more source

Evaluation of patient doses for routine digital radiography procedures toward establishing an institutional diagnostic reference levels: A case study in Sri Lanka

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract The present study was conducted as part of a comprehensive work to establish National Diagnostic Reference Levels (NDRLs) in Sri Lanka for the first time. DRLs can be used as an effective optimization tool for identifying unusually high or low patient doses during X‐ray examinations.
Sachith Welarathna, Sivakumar Velautham, Mihira Wanninayake, Sivananthan Sarasanandarajah   +3 more
wiley   +1 more source