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Simple and cost-effective determination of ciprofloxacin hydrochloride by electrical micro-titration

Chinese Chemical Letters 2017年第7期28卷 1406-1412页

作者： xu-Zhi Zhang Meng-Shi Huang Qian-Qian Yang Dong-Sheng Ding Jun Zhao Wen-Rong Yang Ke-Ming Qu Yellow Sea Fisheries Research institute Chinese Academy of Fishery Sciences Qingdao National Laboratory for Marine Science and Technology College of Marine sciences Shanghai Ocean University School of Life and Environmental sciences Deakin University

By employing an electrical micro-titration system, in which a capacitively coupled contactless conductivity detector（C^4D） was used to monitor the reaction process in real time, herein a novel method for determining ciprofloxacin hydrochloride（CIPHCl） was developed for the first time. Mode 1. S{1.dard CIPHCl solutions at different concentrations were loaded into reaction cells, respectively, and were titrated with s{1.dard Ag^＋. Upon the titration, the formation of a precipitate alters the number of ions in the solution, raising the change of conductivity, which was monitored by a special C-4 D to construct a titration curve. The endpoint of the titration was located from the peak of the curve. Between the elapsed time and the initial concentration of titrand, a linear relationship was established over the range of2.0–8.0 mmol/L. Mode 2： S{1.dard Fe^3＋ took the place of Ag^＋, and was used as titrant to recognize ciprofloxacin contributed to the formation of complexation, which also resulting a change of solution conductivity. Under optimized conditions, a working range of 1.0–5.0 mmol/L CIPHCl was found. Because the reaction solutions were isolated from the working electrodes, this pioneer work shows significant simplicity and cost-effectiveness, by eliminating the requirements for detector exchange/renewal between different measurements, and by involving no auxiliary chemicals. Both of the two approaches were applied successfully to determine CIPHCl in tablet samples. And the results were in good agreement with those obtained by reference method.

关键词： Ciprofloxacin hydrochloride Determination Micro-titration Capacitively coupled contactless conductivity detector Pharmaceutical analysis

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Multishelled CuO/Cu_(2)O induced fast photo-vapour generation for drinking water

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Nano Research 2022年第5期15卷 4117-4123页

作者： xuanbo Chen Ping Li Jiao Wang Jiawei Wan Nailiang Yang Bo xu Lianming Tong Lin Gu Jiang Du Jianjian Lin(✉) Ranbo Yu Dan Wang Department of Physical Chemistry School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of Biochemical Engineering Key Laboratory of Science and Technology on Particle MaterialsChinese Academy of SciencesBeijing 100190China Key Laboratory of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Henan Province Industrial Technology Research institute of Resources and Materials Green Catalysis CenterCollege of ChemistryZhengzhou UniversityZhengzhou 450001China university of Chinese Academy of {1.s Beijing 100049China Center for Nano-chemistry Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Solar thermal interfacial water evaporation is proposed as a promising route to address freshwater scarcity,which can reduce energy consumption and have unlimited application *** large semiconductor family with controllable bandgap and good chemo-physical stability are considered as good candidates for ***,the evaporation rate is not satisfactory because the rational control of nano/micro structure and composition is still in its infancy ***,by systemically analyzing the photo-thermal evaporation processes,we {1. the hollow multishelled structure(HoMS)into this *** from the multishelled and hierarchical porous structure,the light absorption,thermal regulation,and water transport are simultaneously optimized,resulting in a water evaporation rate of 3.2 kg·m^(-2)·h^(-1.,which is among the best performance in solar-vapour *** collected water from different water resources meets the World Health Organization standard for drinkable ***,by using the CuO/Cu_(2)O system,reactive oxygen species were generated for water disinfection,showing a new route for efficient solar-vapour generation and a green way to obtain safe drinking water.

关键词： multishelled structure hollow structure water evaporation nano/micro structure

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Self-regulation in chemical and bio-engineering materials for intelligent systems

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CAAI Transactions on Intelligence Technology 2018年第1期3卷 40-48页

作者： Zhongyuan Huang Kewei Lei Dan He Yanbin xu Jacob Williams Liu Hu Macy McNeil Juan M. Ruso Zhen Liu Zhanhu Guo Zhe Wang Chemistry Department Xavier University of Louisiana New Orleans LA 70125 USA College of Chemistry and Chemical Engineering Xinyang Normal University Xinyang 464000 Henan People's Republic of China Materials science and Chemical Engineering Ningbo University Ningbo 315211 People's Republic of China Department of Pharmaceutical Analysis Chongqing Medical University Chongqing 400016 People's Republic of China School of Chemistry and Materials science Ludong University Yantai 264025 Shandong People's Republic of China Department of Physics and Engineering Frostburg State University Frostburg MD 21532 USA Department of Mechanical Engineering University of Maryland College Park MD 20742 USA Integrated Composites Laboratory (ICL) Department of Chemical & Biomolecular Engineering University of Tennessee KnoxvilleTN 37996 USA National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou 450002People's Republic of China Soft Matter and Molecular Biophysics Group Department of Applied Physics University of Santiago de Compostela15782 Santiago de Compostela Spain

Herein, the authors review the self-regulation system secured by well-designed hybrid materials, composites, and complex system. As a broad concept, the self-regulated material/system has been defined in a wide research field and proven to be of great interest for use in a biomedical system, mechanical system, physical system, as the fact of something such as an organisation regulating itself without intervention from external perturbation. Here, they focus on the most recent discoveries of self-regulation phenomenon and progress in utilising the self-regulation design. This paper concludes by examining various practical applications of the remarkable materials and systems including manipulation of the oil/water interface, cell out-layer structure, radical activity, electron energy level, and mechanical structure of nanomaterials. From material science to bioengineering, self-regulation proves to be not only viable, but increasingly useful in many applications. As part of intelligent engineering, self-regulatory materials are expected to be more used as integrated intelligent components.

关键词：复合材料纳米技术智能技术人工智能

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Electron-ion collider in china

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Frontiers of physics 2021年第6期16卷 1-78页

作者： Daniele PAnderle Valerio Bertone xu Cao Lei Chang Ningbo Chang Gu Chen xurong Chen Zhuojun Chen Zhufang Cui Lingyun Dai Weitian Deng Minghui Ding xu Feng Chang Gong Longcheng Gui Feng-Kun Guo Chengdong Han Jun He Tie-Jiun Hou Hongxia Huang Yin Huang KrešImir KumeričKi LPKaptari Demin Li Hengne Li Minxiang Li xueqian Li Yutie Liang Zuotang Liang Chen Liu Chuan Liu Guoming Liu Jie Liu Liuming Liu Xiang Liu Tianbo Liu Xiaofeng Luo Zhun Lyu Boqiang Ma Fu Ma Jianping Ma Yugang Ma Lijun Mao Cédric Mezrag HervéMoutarde Jialun Ping Sixue Qin Hang Ren Craig DRoberts Juan Rojo Guodong Shen Chao Shi Qintao Song Hao Sun PawełSznajder Enke Wang Fan Wang Qian Wang Rong Wang Ruiru Wang Taofeng Wang Wei Wang Xiaoyu Wang Xiaoyun Wang Jiajun Wu Xinggang Wu Lei Xia Bowen Xiao Guoqing Xiao Ju-Jun Xie Yaping Xie Hongxi Xing Hushan xu Nu xu Shusheng xu Mengshi Yan Wenbiao Yan Wencheng Yan Xinhu Yan Jiancheng Yang Yi-Bo Yang Zhi Yang Deliang Yao Zhihong Ye Peilin Yin C-PYuan Wenlong Zhan Jianhui Zhang Jinlong Zhang Pengming Zhang Yifei Zhang Chao-Hsi Chang Zhenyu Zhang Hongwei Zhao Kuang-Ta Chao Qiang Zhao Yuxiang Zhao Zhengguo Zhao Liang Zheng Jian Zhou Xiang Zhou Xiaorong Zhou Bingsong Zou Liping Zou Guangdong Provincial Key Laboratory of Nuclear science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China IRFU CEAUniversitéParis-SaclayF-91191 Gif-sur-YvetteFrance institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China university of Chinese Academy of {1.s Beijing 100049China Nankai university Tianjin 300071China Xinyang Normal university Xinyang 464000China School of Physics and Materials science Guangzhou UniversityGuangzhou 510006China Hunan university Changsha 410082China Nanjing university Nanjing 210093China Huazhong university of {1. and Technology Wuhan 430074China European Centre for Theoretical Studies in Nuclear Physics and Related Areas(ECT*)and Fondazione Bruno Kessler Villa TambosiStrada delle Tabarelle 286I-38123 Villazzano(TN)Italy School of Physics Peking UniversityBeijing 100871China Hunan Normal university Changsha 410081China institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Nanjing Normal university Nanjing 210023China Department of Physics College of SciencesNortheastern UniversityShenyang 110819China Southwest Jiaotong university Chengdu 610000China Department of Physics Faculty of ScienceUniversity of ZagrebBijenička c.3210000 ZagrebCroatia Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear ResearchDubna 141980Russia School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Lanzhou university Lanzhou 730000China Key Laboratory of Particle Physics and Particle Irradiation(MOE) Shandong UniversityQingdao 266237China Key Laboratory of Quark and Lepton Physics(MOE)and institute of Particle Physics Central China Normal UniversityWuhan 430079China School of Physics Southeast UniversityNanjing 211189China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai institute of {1. Physics Chinese Academy of SciencesShanghai 201800China Depa

Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as *** a future high energy nuclear physics project,an Electron-ion collider in china(EicC)has been *** will be constructed based on an upgraded heavy-ion accelerator,High Intensity heavy-ion Accelerator Facility(HIAF)which is currently under construction,together with a new electron *** proposed collider will provide highly polarized electrons(with a po-larization of 80%)and protons(with a polarization of 70%)with variable center of mass energies from 1. to 20 GeV and the luminosity of(2–3)×1.33 cm^(−2)·s^(−1..Polarized deuterons and Helium-3,as well as unpolarized ion beams from Carbon to Uranium,will be also available at the *** main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region,including 3D tomography of nucleon;the partonic structure of nuclei and the parton interaction with the nuclear environment;the exotic states,especially those with heavy flavor quark *** addition,issues fundamental to unders{1.ding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the *** order to achieve the above-mentioned physics goals,a hermetical detector system will be constructed with cutting-edge *** document is the result of collective contributions and valuable inputs from experts across the *** EicC physics program complements the ongoing scientific programs at the Jefferson Laboratory and the future EIC project in the United *** success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in china.

关键词： electron ion collider nucleon structure nucleon mass exotic hadronic states quantum chromodynamics 3D-tomography helicity transverse momentum dependent parton distribution generalized parton distribution energy recovery linac polarization spin rotator

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Management of granulomatous lobular mastitis: an international multidisciplinary consensus(2021.edition)

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Military Medical Research 2022年第4期9卷 389-403页

作者： Qian-Qian Yuan Shu-Yuan Xiao Omar Farouk Yu-tang Du Fereshte Sheybani Qing Ting tan Sami Akbulut Kenan Cetin Afsaneh Alikhassi Rami Jalal Yaghan Irmak Durur-Subasi Fatih Altintoprak Tae Ik Eom Fatih Alper Mustafa Hasbahceci David Martínez-Ramos Pelin Seher Oztekin Ava Kwong Cedric W.Pluguez-Turul Kirstyn EBrownson Shirish Chandanwale Mehran Habib Liu-Yi Lan Rui Zhou Xian-Tao Zeng Jiao Bai Jun-Wen Bai Qiong-Rong Chen Xing Chen Xiao-Ming Zha Wen-Jie Dai Zhi-Jun Dai Qin-Yu Feng Qing-Jun Gao Run-Fang Gao Bao-San Han Jin-xuan Hou Wei Hou Hai-Ying Liao Hong Luo Zheng-Ren Liu Jing-Hua Lu Bin Luo Xiao-Peng Ma Jun Qian Jian-Yong Qin Wei Wei Gang Wei Li-Ying xu Hui-Chao xue Hua-Wei Yang Wei-Ge Yang Chao-Jie Zhang Fan Zhang Guan-Xin Zhang Shao-Kun Zhang Shu-Qun Zhang Ye-Qiang Zhang Yue-Peng Zhang Sheng-Chu Zhang Dai-Wei Zhao Xiang-Min Zheng Le-Wei Zheng Gao-Ran xu Wen-Bo Zhou Gao-Song Wu Department of Thyroid and Breast Surgery Zhongnan Hospital of Wuhan UniversityWuhan430071China Department of Pathology University of Chicago Pritzker School of MedicineChicagoIL60637USA Department of Surgical Oncology and Breast Surgery Oncology CenterFaculty of MedicineMansoura UniversityMansoura35516Egypt Department of Breast Surgery Beijing University of Chinese MedicineBeijing100700China Department of Infectious Diseases and Tropical Medicine Faculty of MedicineMashhad University of Medical SciencesMashhad***Iran Breast Department KK Women’s and Children’s Hospital100 Bukit Timah RoadSingapore229899Singapore Department of Surgery Department of Public HealthDepartment of BiostatisticsBioinformatics and Medical InformaticsInonu University Faculty of Medicine44280MalatyaTurkey Department of General Surgery Faculty of MedicineÇanakkale Onsekiz Mart University17020ÇanakkaleTurkey Department of Radiology Cancer InstituteImam Khomeini HospitalTehran University of Medical SciencesTehran***Iran Department of Surgery College of Medicine and Medical SciencesArabian Gulf University-BahrainManama26671Bahrain Department of Radiology International Faculty of MedicineIstanbul Medipol University34810IstanbulTurkey Department of General Surgery Faculty of MedicineSakarya University54050SakaryaTurkey Department of Surgery HiU Clinic170Gwongwang-roPaldal-guSuwon16488Korea Department of Radiology Faculty of MedicineAtaturk University25240ErzurumTurkey Academic Support and Education Center Hırkai Serif DistrictKececi Cesmesi StrDoktorlar BuildingB/734091IstanbulTurkey Department of General and Digestive Surgery Hospital General CastellonAvda Benicassim S/N12812004CastellónSpain Radiology Department Ankara Training and Research Hospital305018AnkaraTurkey Department of Surgery The University of Hong KongChina The university of Hong Kong-Shenzhen Hospital Shenzhen518053China university of Miami Health {1. and Miller School of Medicine 1475 NW 12th AvenueM

Granulomatous lobular mastitis(GLM) is a rare and chronic benign inflammatory disease of the breast. Difficulties exist in the management of GLM for many front-line surgeons and medical specialists who care for patients with inflammatory disorders of the breast. This consensus is summarized to establish evidence-based recommendations for the management of GLM. Literature was reviewed using PubMed from January 1. 1.71.to July 31. 2020. Sixty-six international experienced multidisciplinary experts from 1. countries or regions were invited to review the *** of evidence were determined using the American College of Physicians grading system, and recommendations were discussed until consensus. Experts discussed and concluded 30 recommendations on historical definitions,etiology and predisposing factors, diagnosis criteria, treatment, clinical stages, relapse and recurrence of GLM. GLM was recommended as a widely accepted definition. In addition, this consensus introduced a new clinical stages and management algorithm for GLM to provide individual treatment strategies. In conclusion, diagnosis of GLM depends on a combination of history, clinical manifestations, imaging examinations, laboratory examinations and *** approach to treatment of GLM should be {1. according to the different clinical stage of GLM. This evidencebased consensus would be valuable to assist front-line surgeons and medical specialists in the optimal management of GLM.

关键词： Granulomatous mastitis Granulomatous lobular mastitis Idiopathic granulomatous mastitis Diagnosis Treatment

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基于词嵌入的地理知识库实体类别对齐方法研究

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地球信息科学学报 2021年第8期23卷 1372-1381页

作者：徐召华诸云强宋佳孙凯王曙山东理工大学建筑工程学院淄博255000 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室北京100101 江苏省地理信息资源开发与利用协同创新中心南京210023 中国科学院大学北京100049

地理知识库是地理实体及其相互间关系的集合,对于智能搜索、问答、推荐等知识服务有重要的支撑作用。然而,已有的地理知识库由于来源、形式、构建者等的不同,在实体地名、空间位置、类别等方面存在"同义异形"和"同形异义"的语义异构现象... 详细信息

地理知识库是地理实体及其相互间关系的集合,对于智能搜索、问答、推荐等知识服务有重要的支撑作用。然而,已有的地理知识库由于来源、形式、构建者等的不同,在实体地名、空间位置、类别等方面存在"同义异形"和"同形异义"的语义异构现象,影响了地理知识库间的知识融合与共享。语义对齐是解决语义异构的一种有效方法,其中实体类别对齐是语义对齐的基础,对于提高实体地名和空间位置的对齐精度具有重要作用。现有的实体类别对齐方法主要采用传统的字符相似度和结构相似度等来度量类别的相似度,无法捕捉实体类别深层次的语义相关性,从而影响了类别对齐的精确性。因此,本文提出了一种基于词嵌入的地理实体类别对齐方法,采用词嵌入模型从语料中学习实体类别的语义信息,并通过词向量来表达,以此弥补现有方法存在的缺失,进而提升实体对齐精度。进一步地,通过通用语料与地理信息语料的融合,本文实现了词嵌入模型所用语料在地理语义方面的增强,从而更精准地度量地理实体类别间的相关性。不同地理知识库实体类别对齐的实验表明,本文提出的方法能够有效捕捉地理实体类别的深层次语义信息,其实体类别对齐的调和平均值(F1.可达0.9568,有效提高了实体类别的对齐精度。

关键词：地理知识库语义异构地理实体实体类别类别对齐词嵌入词向量地理语料相似度

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BDS-3基本系统载波相位平滑伪距分析

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测绘科学 2020年第12期45卷 62-68页

作者：徐宗秋韩澎涛赵洪涛丁新展庄典徐彦田辽宁工程技术大学测绘与地理科学学院辽宁阜新123000 山东科技大学泰山科技学院建筑工程学院山东泰安271000 辽宁地质工程职业学院辽宁丹东118302 中国测绘科学研究院北京100036

为分析BDS-3基本系统载波相位平滑伪距单点定位性能,采用B1.B3单频以及B1.B3无电离层组合(B1.B3IF)3种模式,分别进行标准伪距单点定位和载波相位平滑伪距单点定位实验。对国际GNSS服务(IGS)测站数据进行处理,结果表明,载波相位平滑伪... 详细信息

为分析BDS-3基本系统载波相位平滑伪距单点定位性能,采用B1.B3单频以及B1.B3无电离层组合(B1.B3IF)3种模式,分别进行标准伪距单点定位和载波相位平滑伪距单点定位实验。对国际GNSS服务(IGS)测站数据进行处理,结果表明,载波相位平滑伪距可提高定位结果的稳定性;B1.B3和B1.B3IF 3种模式平滑后3D定位精度分别提高了0.08、0.04和0.93 m;平滑后B1.B3IF模式高程定位精度较B1.B3模式分别高0.99和2.38 m,表明BDS-3基本系统电离层延迟改正模型有一定优化空间。将载波相位平滑伪距应用于手机端定位,平滑后重复性定位精度和定位精度分别提高了39.7%和6%。

关键词： BDS-3基本系统载波相位平滑伪距单频 B1.B3无电离层组合定位性能

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基于相空间的复杂物理场建模与分析方法

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计算物理 2021年第6期38卷 631-660页

作者：许爱国宋家辉陈锋谢侃应阳君北京应用物理与计算数学研究所北京100088 北京理工大学爆炸科学与技术国家重点实验室北京100081 北京大学应用物理与技术研究中心和高能量密度物理数值模拟教育部重点实验室北京100871 北京理工大学宇航学院北京100081 山东交通学院航空学院山东济南250357

评述两个基于相空间的建模与分析方法及其应用。第一个是基于闵可夫斯基泛函的形态分析方法,第二个是基于离散玻尔兹曼方程的建模与分析方法。两者均是统计物理学相空间描述方法的进一步发展:以相对独立的行为特征量为基,构建相空间,使... 详细信息

评述两个基于相空间的建模与分析方法及其应用。第一个是基于闵可夫斯基泛函的形态分析方法,第二个是基于离散玻尔兹曼方程的建模与分析方法。两者均是统计物理学相空间描述方法的进一步发展:以相对独立的行为特征量为基,构建相空间,使用该相空间和其子空间来描述系统的行为特征;该相空间中的一个点对应系统的一组行为特征;两点间的距离d可用来描述两组行为特征的差异,其倒数可用来描述两组行为特征的相似度(S=1.d);一段时间内两点间距离的平均值d可用来描述两个动理学过程的差异,其倒数可用来描述这两个动理学过程的相似度(S_(p)=1.d)。从历史角度,基于闵可夫斯基泛函的形态相空间分析方法在先,接受其启发是离散玻尔兹曼方法朝着相空间描述方法发展过程中的关键环节。形态分析方法独立于数据来源,因而离散玻尔兹曼模拟得到的结果,除了可以使用其自带的分析功能之外,还可进一步使用形态分析方法获得另一个层面或视角的认识。在复杂介质动理学研究中,这两个方法从不同的视角,使得许多以前无法提取的信息得以分层次、定量化研究。

关键词：离散玻尔兹曼方法形态分析方法复杂物理场统计物理相空间

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A new Chinese standard for testing of quality control in medical proton/heavy ion beam radiotherapy equipment

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Radiation Medicine and Protection 2023年第4期4卷 177-181页

作者： Jilong Yuan Xiangjie Ma Quanfu Sun Haikuan Liu Shouping xu Yinxiangzi Sheng Xiaoyun Ma Xiangkui Mu Xinguo Liu Tao Yang Xin Zhang Hsiao-Ming Lu Jinsheng Cheng Key Laboratory of Radiological Protection and Nuclear Emergency China CDCNational Institute for Radiological ProtectionChinese Center for Disease Control and PreventionWHO Collaboration Center for Radiation and HealthBeijing 100088China institute of Radiation Medicine Fudan UniversityShanghai 200032China National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Department of Medical Physics Shanghai Proton and Heavy Ion Center Shanghai Engineering Research Center of Proton and Heavy Ion Radiation TherapyShanghai 201315China Heavy Ion Center of Wuwei Cancer Hospital Gansu Wuwei Academy of Medical SciencesGansu Wuwei Tumor HospitalWuwei 733000China Department of Radiation Oncology Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinan 250117China institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Department of Radiation Oncology The First Medical Center of Chinese PLA General HospitalBeijing 100853China Varian Medical systems{1. Co. LtdBeijing 100176China Hefei Ion Medical Center Hefei230088China Ion Medical Research institute University of Science and Technology of ChinaHefei 230088China

With the development of social economy and radiotherapy technique,proton/heavy ion radiotherapy has been applied widely to clinical *** present,there are at least 29 hospitals in{1. at various stages of planning,construction,commissioning or clinical operation of medical proton/heavy ion beam radiotherapy *** with common radiotherapy accelerators used in conventional external beam radiotherapy,the proton/heavy ion therapy system has more stringent requirements for quality control so as to achieve an optimum therapeutic *** order to protect the health rights of patients undergoing radiotherapy,to facilitate the relevant administrative supervision departments to carry out standard-based approval and routine supervision and to promote the development of related medical undertakings,the standard for testing of quality control for medical proton/heavy ion beam radiotherapy equipment is drafted to fill the gap in this regard in{1. and even *** standard contains five indicators and corresponding testing methods for radiological protection and safety and 1. indicators for quality control of equipment *** standard is a mandatory standard and is based on the relevant Chinese legal requirements for the testing of radiotherapy equipment,so all the indicators listed in the standard shall be *** the drafting of the standard,the opinions from hospitals that are currently using proton/heavy ion medical accelerators for radiotherapy purpose and from the related equipment manufacturers were taken into *** draft standard was revised with reference to these opinions and the feasibility of the related quality control *** official version of the standard was released on March 7,2023,and implementation is scheduled to begin on March 1.2024.

关键词： Chinese standard Proton Heavy ion Radiotherapy Quality control

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Ti/Co_(3)O_(4)/RuO_(2)-IrO_(2)纳米结构阳极电催化析氧研究

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表面技术 2022年第11期51卷 436-444,461页

作者：刘越仁辛永磊许立坤段体岗高显泽郭明帅中国船舶重工集团公司第七二五研究所海洋腐蚀与防护重点实验室山东青岛266237 哈尔滨工程大学材料科学与化学工程学院哈尔滨150001

目的研发含纳米结构Co_(3)O_(4)中间层的Ti/Co_(3)O_(4)/RuO_(2)-IrO_(2)阳极,并对其电化学析氧性能进行研究,以提升Ti/RuO_(2)-IrO_(2)金属氧化物阳极的电化学析氧性能。方法在Ti基底上电沉积制备Co(OH)_(2),烧结形成Co_(3)O_(4)纳米片结构,随后采用热分解工艺在Ti/Co_(3)O_(4)表面制备RuO_(2)-IrO_(2)电催化层,从而构建了Ti/Co_(3)O_(4)/RuO_(2)-IrO_(2)复合阳极。使用透射电子显微镜(TEM)、扫描电子显微镜(SEM)、X-射线衍射仪(XRD)和电化学工作站对涂层的微观表面形貌、物相组成、电化学性能等进行观察与分析。结果SEM显示出Ti/Co_(3)O_(4)纳米片上RuO_(2)-IrO_(2)的负载量随涂刷次数增加逐渐增多,最终完全遮盖Co_(3)O_(4)纳米片中间层。且随着RuO_(2)-IrO_(2)前驱体溶液涂覆次数的增加,XRD观察到RuO_(2)-IrO_(2)衍射峰强度在逐渐增大。TEM测试显示Co_(3)O_(4)中间层是由纳米颗粒堆叠组成且具有多孔结构。电化学极化曲线测试表明,涂覆三次RuO_(2)-IrO_(2)层的含Co_(3)O_(4)中间层阳极析氧电位最低,当电流密度达到1. mA/cm^(2)时,析氧电位仅为1.326 V(***),低于无中间层的Ti/RuO_(2)-IrO_(2)阳极(1.41. V)。循环伏安测试表明,Ti/Co_(3)O_(4)/RuO_(2)-IrO_(2)阳极的伏安电量达到62.83 mC/cm^(2),相较于Ti/RuO_(2)-IrO_(2)阳极的23.65 mC/cm^(2)提高了1.6%。稳定性能试验表明,在经过1.00次循环稳定性试验后,加入Co_(3)O_(4)纳米片中间层的复合阳极的伏安电量降低了35.94%,低于无中间层阳极48.88%的伏安电量损耗率。循环极化试验后的Ti/Co_(3)O_(4)/RuO_(2)-IrO_(2)复合阳极的电化学活性仍明显优于循环极化试验前的Ti/RuO_(2)-IrO_(2)阳极。结论Co_(3)O_(4)纳米片中间层的加入使得Ti/Co_(3)O_(4)/RuO_(2)-IrO_(2)阳极的电催化析氧性能和稳定性都得到了提升。

关键词： RuO_(2)-IrO_(2) Co_(3)O_(4)纳米片电催化析氧金属氧化物阳极伏安电量

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