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Regression model for stabilization energies associated with anion ordering in perovskite-type oxynitrides

Journal of Energy Chemistry 2019年第9期28卷 7-14页

作者： masanori kaneko.mikiya fujii Takashi Hisatomi Koichi Yamashita Kazunari Domen Department of Chemical System Engineering School of Engineering The University of Tokyo7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan Center for Energy & Environmental Science Interdisciplinary Cluster for Cutting Edge Research Shinshu University4-17-1 Wakasato Nagano-shi Nagano 380-8553 Japan

Certain perovskite-type oxynitrides have bandgaps suitable for renewable hydrogen production via photocatalytic and photoelectrochemical water splitting under visible *** the ordering of oxide and nitride anions in these materials is important because this ordering affects their semiconductor ***, the numerous possible orderings complicate systematic analyses based on density functional theory(DFT) calculations using defined elemental *** work shows that anion ordering in large-scale supercells within perovskite-type oxynitrides can be rapidly predicted based on machine learning, using BaNbO2N(capable of oxidizing water under irradiation up to 740 nm) as an *** learning allows the calculation of the total energy of BaNbO2N directly from randomly selected initial atomic placements without costly structural optimization, thus reducing the computational cost by more than 99.99%.Combined with the Metropolis Monte Carlo method, machine learning permits exploration of the stable anion orderings of large supercells without costly DFT *** work therefore demonstrates a means of predicting the properties of functional materials having complex compositions based on the most realistic elemental arrangements in conjunction with reasonable computational loads.

关键词： Machine learning Total energy Bandgap Local anion ordering Density functional theory

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基于图像处理技术的轨道车辆底部视觉检测系统

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智慧轨道交通 2024年第2期61卷 98-100页

作者： Akihide Uno Takehito fujii Hiroyuki Nakajima [日]masanori Endo 林凯(译) 王慧(译) 宋微(译) 吕俊超(译) 不详

利用图像处理技术,本文开发了一种用于机车车辆故障检测的系统。该系统能够自动检测诸如底部设备紧固螺栓松动或设备箱盖手柄转动等故障,如有必要,检验人员可以根据该系统显示的图像对机车车辆进行具体检查。目前系统已经具备了车辆底... 详细信息

利用图像处理技术,本文开发了一种用于机车车辆故障检测的系统。该系统能够自动检测诸如底部设备紧固螺栓松动或设备箱盖手柄转动等故障,如有必要,检验人员可以根据该系统显示的图像对机车车辆进行具体检查。目前系统已经具备了车辆底部设备侧面检测功能,我们正致力于将该系统应用于车辆底部设备中间区域及车顶设备的检测。本文对该系统及其用户界面进行了概述。

关键词：机车车辆底部设备检查图像处理线路摄像头

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Pneumoscrotum: A rare manifestation of perforation associated with therapeutic colonoscopy

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World Journal of Gastroenterology 2005年第32期11卷 5061-5063页

作者： Kuang-I Fu Yasushi Sano Shigeharu Kato Takahiro fujii masanori Sugito Masato Ono Norio Saito Kiyotaka Kawashima Shigeaki Yoshida Takahiro Fujimori Division of Gastrointestinal Oncology and Digestive EndoscopyNational Cancer Center Hospital East KashiwaChiba 277-8577Japan Division of SurgeryNational Cancer Center Hospital East KashiwaChiba 277-8577Japan Department of Surgical and Molecular PathologyDokkyo University School of Medicine 880 KitakobaysashiMibuShimotugaTochigi 321-0293Japan

Pneumoscrotum is uncommon and also rarely reported as a complication associated with colonic perforation. A case of colonic perforation in delayed fashion associated with EMR, revealed by pneumoscrotum, is reported and the associated literatures are reviewed. A 52-year-old male received piecemeal EMR for a laterally spreading tumor 35 mm in size in our hospital. He complained of enlargement of the scrotum and revisited our hospital the day after the procedure. A diagnosis of pneumoscrotum was made, and as most such cases have been reported to be associated with pneumoperitoneum, colonic perforation was suspected. Free air but no fluid collection was found by abdominal computed tomography, and delayed colonic perforation was diagnosed. However, as there were no clinical signs of peritoneal irritation,conservative treatment was administered and the patient recovered uneventfully. Pneumoscrotum could be a sign of colonic perforation after EMR, and treatment should be carefully chosen.

关键词：结肠镜治疗方法并发症肠穿孔

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