Study on operator’s SA reliability in digital NPPs. Part 1: The analysis method of operator’s errors of situation awareness
作者：
Li Peng-cheng* ;Zhang Li;Dai Li-cao;Li Xiao-fang
期刊：
Annals of Nuclear Energy ,2017年102:168-178 ISSN：0306-4549
通讯作者：
Li Peng-cheng
作者机构：
[Li Peng-cheng; Zhang Li; Dai Li-cao; Li Xiao-fang] Univ South China, Human Factor Inst, Hengyang 421001, Hunan, Peoples R China.;[Li Peng-cheng] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Li Peng-cheng] U;Univ South China, Human Factor Inst, Hengyang 421001, Hunan, Peoples R China.
关键词：
Analysis method;Digitized main control rooms;Human error;Situation awareness
摘要：
Situation awareness (SA) is a key element that impacts operator's decision-making and performance in nuclear power plants (NPPs). The subsequent complex cognitive activities cannot be correctly completed due to errors of situation awareness (ESA), which will lead to disastrous consequences. In order to investigate and analyze operator's ESA in the digitized main control room (DMCR) of a nuclear power plant, the model of ESA is established, the classification system of ESA is developed based on the built ESA model, and the analysis method of ESA is also constructed on the basis of the observation of simulator and operator surveys. Finally, a case study is provided to illustrate the concrete application of the method. It provides a theoretical and practical support for the operator's SAE analysis in a digitized main control room of a nuclear power plant. © 2016 Elsevier Ltd
语种：
英文
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空间反应堆反应性事故分析
作者：
王浩然;李永琦;周蓝宇;姚明乐;曾文杰
期刊：
新型工业化 ,2017年7(5):39-46 ISSN：2095-6649
作者机构：
南华大学核科学技术学院,湖南衡阳,421001;[李永琦; 姚明乐; 曾文杰; 周蓝宇; 王浩然] 南华大学
关键词：
空间反应堆;稳态模型;动态模型;转鼓角度变化;安全性
摘要：
空间反应堆具有寿命长、功率大、体积小等优点,可以满足太空探索的需要。本文以TOPAZ-Ⅱ空间反应堆为研究对象,建立堆芯中子点堆动力学模型、堆芯热工模型以及堆芯反应性模型,通过编程计算得到堆芯满功率稳态下慢化剂温度和燃料温度。采用全隐式向后差分法求解动态方程组,并以堆芯稳态计算为基础,计算TOPAZ-II空间反应堆堆芯控制鼓转角变化时堆芯功率、慢化剂平均温度、燃料平均温度及反应性。计算结果表明随转鼓的角度发生变化的值越大时,反应性的变化趋势、堆芯热功率产生的波动、慢化剂的平均温度减小的速度和燃料的平均温度减小趋势越大,但一段时间后都能维持在某一稳定值,表明堆芯具有较好的安全性。
语种：
中文
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Molecular dynamics simulation of irradiation damage of SiC/Gra/SiC composites
作者：
Zhang, Chao* ;Song, Huai-Zhi;Mao, Fei;Wang, Cheng-Jun;Wang, Dong-Qi* ;...
期刊：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,2017年406(Pt.B):470-474 ISSN：0168-583X
通讯作者：
Zhang, Chao;Wang, Dong-Qi
作者机构：
[Song, Huai-Zhi; Wang, Cheng-Jun; Zhang, Chao] Anhui Univ Sci & Technol, Sch Mat Sci & Engn, Huainan 232001, Peoples R China.;[Mao, Fei] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Wang, Dong-Qi] Chinese Acad Sci, Inst High Energy Phys, Multidisciplinary Initiat Ctr, Beijing 100049, Peoples R China.;[Zhang, Feng-Shou] Beijing Normal Univ, Coll Nucl Sci & Technol, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China.;[Zhang, Feng-Shou] Beijing Radiat Ctr, Beijing 100875, Peoples R China.
通讯机构：
[Zhang, Chao] A;[Wang, Dong-Qi] C;Anhui Univ Sci & Technol, Sch Mat Sci & Engn, Huainan 232001, Peoples R China.;Chinese Acad Sci, Inst High Energy Phys, Multidisciplinary Initiat Ctr, Beijing 100049, Peoples R China.
会议名称：
27th International Conference on Atomic Collisions in Solids (ICACS)
会议时间：
JUL 24-29, 2016
会议地点：
Chinese Acad Sci, Inst Modern Phys, Lanzhou, PEOPLES R CHINA
会议主办单位：
Chinese Acad Sci, Inst Modern Phys
关键词：
Irradiation damage;SiC composites;Interphase;Electronic excitation effect;Two-temperature model
摘要：
Silicon carbide fiber-reinforced silicon carbide matrix composites have been investigated for their use as structural materials for advanced nuclear reactor. Although quite a number of researches have been devoted to probe the effects of irradiation on various properties of the composites, there is little known about the atomistic mechanism for irradiation resistance. In this study, a two-temperature model has been used to investigate the irradiation damage of SiC/Gra/SiC composites, which includes three parts and two SiC/C interfaces, two single crystal cubic silicon carbide on two sides and a few graphene sheets in the middle part. By simulating 100 keV displacement cascades, we find that the number of defects in the reinforcement is larger than that in the matrix, which indicates the damage in the reinforcement is more serious than that in the matrix. Moreover, we explicitly investigate the damage behavior of the interphase graphene layers and find that some atoms in one graphene sheet form many new chemical bonds with atoms in another one, which leads to the transition from sp(2) to sp(3) hybridization. The newly formed chemical bonds link the different graphene layers and make graphene-like electronic structure more "diamond-like", enhancing the irradiation resistance of the matrix. (C) 2017 Elsevier B.V. All rights reserved.
语种：
英文
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小型模块化反应堆发展趋势及前景
作者：
周蓝宇;齐实;周涛
期刊：
科技创新与应用 ,2017年(21):195-196 ISSN：2095-2945
作者机构：
南华大学 核科学技术学院,湖南 衡阳,421001;华北电力大学 核科学与工程学院,北京,102206;[齐实; 周涛] 华北电力大学;[周蓝宇] 南华大学
关键词：
小堆;发展现状;现有类型;应用前景
摘要：
大型核电厂前期投入高、建造时间长、选址要求高,对核能发展产生限制。结合我国的基本情况,从小堆的发展现状、现有类型出发,对小堆的发展前景和趋势进行分析。小型反应堆具有体积小,功率比大,适应性好等特点,可以很好的弥补以上核电厂缺点,且适应领域广泛,发展方向众多,未来有重要应用。
语种：
中文
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Forecasting the production of medical radioisotopes at Extreme Light Infrastructure - Nuclear Physics gamma-beam system
作者：
Niculae, D.;Puicea, F. D.;Ilie, S.;Luo, W.;Cuong, P. V.;...
期刊：
European Journal of Nuclear Medicine and Molecular Imaging ,2017年44(SUPPL-2):S565-S565 ISSN：1619-7070
作者机构：
[Niculae, D.; Ilie, S.] Horia Hulubei Natl Inst Phys & Nucl Engn, Magurele Ilfov, Romania.;[Ur, C. A.; Puicea, F. D.; Cuong, P. V.; Balabanski, D.] Horia Hulubei Natl Inst Phys & Nucl Engn, Extreme Light Infrastruct Nucl Phys, Magurele Ilfov, Romania.;[Puicea, F. D.; Ilie, S.; Danil, G. Cata] Politehn Univ, Bucharest, Romania.;[Luo, W.] Univ South China, Sch Nucl Sci & Technol, Hengyang, Peoples R China.;[Cuong, P. V.] Vietnam Acad Sci & Technol, Ctr Nucl Phys, Inst Phys, Hanoi, Vietnam.
语种：
英文
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Implementation of the n-body Monte-Carlo event generator into the Geant4 toolkit for photonuclear studies
作者：
Luo, Wen* ;Lan, Hao-yang;Xu, Yi;Balabanski, Dirniter L.
期刊：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT ,2017年849:49-54 ISSN：0168-9002
通讯作者：
Luo, Wen
作者机构：
[Lan, Hao-yang; Luo, Wen] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Balabanski, Dirniter L.; Xu, Yi] Horia Hulubei Natl Inst Phys & Nucl Engn IFIN HH, Extreme Light Infrastruct Nuclear Phys, 30 Reactorului, Bucharest 077125, Romania.
通讯机构：
[Luo, Wen] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
关键词：
Medical radioisotopes;Monte Carlo simulations;Particle sources and targets;Photonuclear reactions
摘要：
A data-based Monte Carlo simulation algorithm, Geant4-GENBOD, was developed by coupling the n-body Monte-Carlo event generator to the Geant4 toolkit, aiming at accurate simulations of specific photonuclear reactions for diverse photonuclear physics studies. Good comparisons of Geant4-GENBOD calculations with reported measurements of photo-neutron production cross-sections and yields, and with reported energy spectra of the<sup>6</sup>Li(n,α)t reaction were performed. Good agreements between the calculations and experimental data were found and the validation of the developed program was verified consequently. Furthermore, simulations for the<sup>92</sup>Mo(γ,p) reaction of astrophysics relevance and photo-neutron production of<sup>99</sup>Mo/<sup>99m</sup>Tc and<sup>225</sup>Ra/<sup>225</sup>Ac radioisotopes were investigated, which demonstrate the applicability of this program. We conclude that the Geant4-GENBOD is a reliable tool for study of the emerging experiment programs at high-intensity γ-beam laboratories, such as the Extreme Light Infrastructure –Nuclear Physics facility and the High Intensity Gamma-Ray Source at Duke University. ©2017 Elsevier B.V.
语种：
英文
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Quark matter and quark stars at finite temperature in Nambu–Jona-Lasinio model
作者：
Chu, Peng-Cheng* ;Li, Xiao-Hua;Wang, Bin;Dong, Yu-Min;Jia, Yu-Yue;...
期刊：
EUROPEAN PHYSICAL JOURNAL C ,2017年77(8):1-9 ISSN：1434-6044
通讯作者：
Chu, Peng-Cheng
作者机构：
[Jia, Yu-Yue; Chu, Peng-Cheng; Dong, Yu-Min; Wang, Shu-Mei; Ma, Hong-Yang; Wang, Bin] Qingdao Technol Univ, Sch Sci, Qingdao 266000, Peoples R China.;[Li, Xiao-Hua] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Peoples R China.
通讯机构：
[Chu, Peng-Cheng] Q;Qingdao Technol Univ, Sch Sci, Qingdao 266000, Peoples R China.
摘要：
We extend the SU(3) Nambu–Jona-Lasinio (NJL) model to include two types of vector interaction. Using these two types of vector interaction in NJL model, we study the quark symmetry free energy in asymmetric quark matter, the constituent quark mass, the quark fraction, the equation of state (EOS) for β-equilibrium quark matter, the maximum mass of QSs at finite temperature, the maximum mass of proto-quark stars (PQSs) along the star evolution, and the effects of the vector interaction on the QCD phase diagram. We find that comparing zero temperature case, the values of quark matter symmetry free energy get larger with temperature increasing, which will reduce the difference between the fraction of u, d and s quarks and stiffen the EoS for β-equilibrium quark matter. In particular, our results indicate that the maximum masses of the quark stars increase with temperature because of the effects of the quark matter symmetry free energy, and we find that the heating(cooling) process for PQSs will increase (decrease) the maximum mass within NJL model. © 2017, The Author(s).
语种：
英文
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基于“卓越工程师计划”的核工程与核技术专业实践教学研究
作者：
刘紫静;赵鹏程;于涛;何丽华;谢金森;...
期刊：
南昌师范学院学报 ,2017年38(3):21-23+64 ISSN：2095-8102
作者机构：
南华大学核科学技术学院,湖南衡阳,421001;[谢金森; 刘紫静; 赵鹏程; 李小华; 于涛; 何丽华] 南华大学
关键词：
核工程与核技术;校企合作;实践教学
摘要：
我国工程教育的"卓越工程师教育培养计划"对传统的实践教学提出了新的要求.分析当前我国核类企业的人才需求与工作内容的基础上,研究了核工程与核技术专业"3+1"培养方案;通过校企合作途径,以工程实践能力和创新能力培养为主线,加强实验室和实习基地建设,加强实践教学内容整合,构建满足卓越工程师知识、能力和素质要求的实践教学体系,对加强各实践环节的教学建设提供借鉴.
语种：
中文
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核电厂数字化SOP对人因失误的影响
作者：
张力;青涛;戴立操;罗克川;周杰
期刊：
核科学与工程 ,2017年37(3):427-433 ISSN：0258-0918
作者机构：
[张力] 南华大学核科学技术学院,湖南衡阳421001;[张力] 湖南工学院,湖南衡阳421002;南华大学核科学技术学院,湖南衡阳,421001;中广核核电运营有限公司,广东深圳,518116;[青涛; 戴立操] 南华大学
关键词：
事故规程;人因失误;数字化;界面管理任务
摘要：
主控室中数字化状态导向规程SOP(State-oriented Procedure)的应用使操纵员执行事故处理的逻辑和信息显示方式都发生了重大变化。本文介绍了SOP规程的原理,描述了数字化主控室中操纵员执行SOP处理电厂事故的流程。以核电厂主控室现场调研、行为观察、模拟机实验和操纵员访谈为依据,发现数字化SOP在操作控制、信息显示、班组合作等方面带来了大量可能导致人因失误的因素,以及可能出现的新的人误模式,可期为SOP规程的优化提供支持。
语种：
中文
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秦山一期堆本体退役源项估算及辐射场可视化
作者：
罗文;宋英明;邹树梁;周剑良;丁谦学;...
期刊：
核科学与工程 ,2017年37(2):302-307 ISSN：0258-0918
作者机构：
[罗文] 南华大学核科学技术学院,湖南衡阳421001;[罗文] 三门技师学院,台州317100;南华大学核科学技术学院,湖南衡阳,421001;上海核工程研究设计院,上海,200233;[高庆瑜; 宋英明; 周剑良; 邹树梁] 南华大学
关键词：
秦山一期堆本体;退役源项;三维辐射场;可视化
摘要：
针对我国秦山一期核反应堆实际情况,利用蒙特卡罗程序建立了细化到燃料棒结构的全堆芯pinby- pin模型进行中子输运计算,并对计算模型的可靠性进行了验证;基于堆本体结构部件的几何参数、材料参数及堆本体中子注量率分布,在假定功率运行史的情况下,利用燃耗计算程序计算了反应堆停堆后的中子活化产物作为堆本体退役源项的估算结果,并对源项产生的三维辐射场剂量分布情况进行了可视化建模与分析,模拟结果与理论分析一致。本研究是下一步建立我国秦山核电厂退役技术安全验证和虚拟仿真平台的关键性基础工作。
语种：
中文
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Ab Initio Study of Ferromagnetism Induced by Electronic Hole Localization in Al-Doped alpha-SiO2
作者：
Mao, Fei* ;Gao, Cong-Zhang;Wang, Feng;Zhang, Chao;Zhang, Feng-Shou
期刊：
Journal of Physical Chemistry C ,2017年121(41):23055-23061 ISSN：1932-7447
通讯作者：
Mao, Fei
作者机构：
[Mao, Fei] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Gao, Cong-Zhang] Inst Appl Phys & Computat Math, Data Ctr High Energy Dens Phys, Beijing 100088, Peoples R China.;[Wang, Feng] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China.;[Zhang, Chao] Anhui Univ Sci & Technol, Sch Mat Sci & Engn, Huainan 232001, Peoples R China.;[Zhang, Feng-Shou] Beijing Normal Univ, Key Lab Beam Technol & Mat Modificat, Minist Educ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China.
通讯机构：
[Mao, Fei] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
摘要：
We study the lattice and electronic structure of substitutional Al in α-SiO<inf>2</inf>based on the ab initio density functional method. For various charge states and doping concentrations of Al ions, our results show that the strongly localized O 2p derived hole states are created in the energy gap with local magnetic moments, which are predicted to have a ferromagnetic order due to the strong interaction between the electronic holes and the distorted lattice. Our ab initio calculations clarify for the first time that the paramagnetism observed in Al-doped α-SiO<inf>2</inf>originates from p-p ferromagnetic coupling, and the role of Al dopants is to mediate the short-range ferromagnetic coupling between the O ions on which the electronic holes are localized. Our results present an improved scientific understanding of the experimentally observed paramagnetism in Al-doped α-SiO<inf>2</inf>, and pave the way toward the realization of high-temperature ferromagnetism in Al-doped α-SiO<inf>2</inf>in the future experiments. ©2017 American Chemical Society.
语种：
英文
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全国辐射环境质量国控点空气中氡浓度累积测量方法研究
作者：
陆建峰;马永福;张荣锁;肖德涛;单健;...
期刊：
中国辐射卫生 ,2017年26(1):70-72 ISSN：1004-714X
作者机构：
浙江省辐射环境监测站,环境保护部辐射环境监测技术中心,浙江杭州310012;南华大学核科学技术学院;[马永福; 陆建峰; 宋建锋; 张荣锁] 环境保护部辐射环境监测技术中心;[肖德涛; 单健] 南华大学
关键词：
固体核径迹法;国控点;氡
摘要：
目的 为了监测全国辐射环境质量国控点空气中氡浓度长期变化趋势.方法 采用固体核径迹法测量,对不同点位测量的氡浓度测量数据进行归一化处理,分析了湿度、气压、高220 Rn对测量结果的影响.结果 对测量方法在标准氡实验室进行了验证,测量结果误差为7.1％.结论 固体核径迹法在标准氡实验室刻度后,可用于国控点空气中氡浓度累积测量.
语种：
中文
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核电厂化学和容积控制系统压力测量仪表检验周期延长论证分析
作者：
何丽华;郑平卫;于涛;刘紫静;谢芹;...
期刊：
科学技术与工程 ,2017年(17):227-230 ISSN：1671-1815
作者机构：
南华大学核科学技术学院
关键词：
周期延长;压力测量仪表;仪表漂移
摘要：
在核电厂长燃料循环周期的论证过程中,仪表标定周期延长的论证是很重要的一个部分。通过对化学和容积控制系统典型的压力测量仪表数据收集和统计分析,采用AFAL方法论证其周期延长的可行性。研究表明:该类仪表具有较好的稳定性,将检验周期延长到18个月后,其安全功能不低于原周期情况下的安全水平,周期延长可行。
语种：
中文
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Simulation calculation of the core physical characteristics of China experimental fast reactor with MCNP
作者：
Xiong Wen-bin;Cao Jian* ;Xie Qin;Wang Zhan-yong;Wang Chuang;...
期刊：
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING, 2017, VOL 5 ,2017年5
通讯作者：
Cao Jian
作者机构：
[Cao Jian; Yang Sen-gai; Xiong Wen-bin; Li Hu-wei; Mao Huan; Wang Zhan-yong; Wang Chuang; Wang Jing] MEP, Nucl & Radiat Safety Ctr, Beijing 10082, Peoples R China.;[Xie Qin] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
通讯机构：
[Cao Jian] M;MEP, Nucl & Radiat Safety Ctr, Beijing 10082, Peoples R China.
会议名称：
25th International Conference on Nuclear Engineering
会议时间：
JUL 02-06, 2017
会议地点：
Shanghai, PEOPLES R CHINA
会议主办单位：
[Xiong Wen-bin;Cao Jian;Wang Zhan-yong;Wang Chuang;Li Hu-wei;Yang Sen-gai;Mao Huan;Wang Jing] MEP, Nucl & Radiat Safety Ctr, Beijing 10082, Peoples R China.^[Xie Qin] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
摘要：
The whole core model of CEFR is established according to the parameters of China Experimental Fast Reactor which are given by IAEA-TECDOC-1531, and the physical parameters of CEFR are simulated with the MCNP4a program. The calculation results are compared with the data contained in the safety analysis report of CEFR. The calculation results are consistent with the design value, which successfully demonstrates the reliability of this MCNP model. The MCNP model will be further refined and applied for nuclear safety review of the CEFR in the future.
语种：
英文
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Mechanical Shim core operational strategy designed for CPR1000 nuclear power plant
作者：
Zhang, Y. W.;Zeng, W. J.*
期刊：
Nuclear Engineering and Design ,2017年322:14-26 ISSN：0029-5493
通讯作者：
Zeng, W. J.
作者机构：
[Zhang, Y. W.] Xi An Jiao Tong Univ, Dept Nucl Sci & Technol, Xian 710049, Peoples R China.;[Zeng, W. J.] Univ South China, Dept Nucl Sci & Technol, Hengyang City 421001, Peoples R China.
通讯机构：
[Zeng, W. J.] U;Univ South China, Dept Nucl Sci & Technol, Hengyang City 421001, Peoples R China.
关键词：
CPR1000;Load follow operation;MSHIM core control strategy;Power control analysis method
摘要：
The CPR1000, one of the water-cooled reactor types in China, employ MODE-G core control strategy through control rods and soluble boron to control the reactivity change during load follow operation, In spite of this, it has load follow capability for only 80% of cycle life, and also a large amount of radioactive waste liquid will be produced. In order to solve this problem, the MSHIM core control strategy was designed for CPR1000 in this paper. The MSHIM core control strategy has two independently moving RCCA groups are utilized for essentially simultaneous control of reactivity/temperature control and axial power distribution with complete boron-adjustment free load follow operation for up to more than 95% of cycle life. The prime objective of core control is to simultaneously manage core power level and power distribution to ensure the reactor operation safety. In the MSHIM core control strategy in CPR1000, reactor power control includes power level control and power distribution control. Power level control uses the reactivity balance analysis method; the objective of power distribution control is to ensure the safety related parameters, such as DNBRs and F-Q within its design limit, AO control analysis method is used. According to the reactivity balance analysis method, the control rods inserted in reactor core to offset the positive reactivity during load follow operation, and in CPR1000 core, part G1-bank is lifted to supply the positive reactivity prior to load follow operation. AO analysis result shows that the axial burnup distribution can affect the AO target value, AO control ability is enhanced with the increase of R-bank worth. Changing burnup history and redesigning the RCCAs are employed. (C) 2017 Elsevier B.V. All rights reserved.
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英文
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放射性气溶胶的扩散迁移规律与控制措施的模拟
作者：
王珂;宋英韵;张泽寰;谭至宇;宋英明
期刊：
中国科技论文 ,2017年12(5):581-588 ISSN：2095-2783
作者机构：
南华大学核科学技术学院,湖南衡阳,421001;[张泽寰; 谭至宇; 宋英明; 王珂; 宋英韵] 南华大学
关键词：
辐射防护与环境工程;放射性气溶胶;计算流体力学;受限空间;迁移;模拟分析
摘要：
针对小、中小、中、中大、大5种不同粒径正态分布下的放射性气溶胶在单、双隔间有限空间内的迁移过程进行了建模与计算.分析了隔间通道的不同长度、截面积大小对气溶胶扩散迁移及沉降的影响;在模拟计算风速、压差、空气湿度等气溶胶迁移影响因素的基础上,对实际过程中进行气溶胶迁移与沉降控制时使用的通风、负压、喷淋等措施进行了模拟.结果表明:对于防止气溶胶扩散,30 cm厚的墙体性价比较高.本文结论结合实验可对放射性气溶胶在受限空间内的扩散迁移实现有效控制.
语种：
中文
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The heterogeneous CTV-PTV margins should be given for different parts of tumors during tomotherapy
作者：
Tong, Ying;Gong, Guanzhong;Chen, Jinhu;Lu, Jie;Liu, Tonghai;...
期刊：
Oncotarget ,2017年8(51):89086-89094 ISSN：1949-2553
通讯作者：
Yin, Yong
作者机构：
[Cheng, Pinjing; Tong, Ying] Univ South China, Sch Nucl Sci & Technol, Hengyang, Peoples R China.;[Yin, Yong; Lu, Jie; Liu, Tonghai; Chen, Jinhu; Gong, Guanzhong] Shandong Univ, Shandong Canc Hosp, Radiat Phys Dept, Jinan, Shandong, Peoples R China.
通讯机构：
[Yin, Yong] S;Shandong Univ, Shandong Canc Hosp, Radiat Phys Dept, Jinan, Shandong, Peoples R China.
关键词：
CTV-PTV margins;MVCT;heterogeneity;setup errors;tomotherapy
摘要：
Objective: The purpose of this study was to evaluate CTV-PTV margins of tumors for tomotherapy. Methods: Setup errors were analyzed for 151 patients receiving helical tomotherapy treatment. 53 patients had head and neck tumors, 45 had thoracic tumors, 20 had abdominal tumors, and 33 had pelvic tumors. The setup errors were calculated in six directions, i.e. +X (left), -X (right), +Y (head), -Y (foot), +Z (ventral), and -Z (dorsal), after Megavoltage CT (MVCT) images were registered to simulation CT images. And then the CTV-PTV margins were calculated. Results: The setup errors along the +Z direction were significantly higher than that along the -Z direction (p < 0.05). The CTV-PTV margins on +X, -X, +Y, -Y, +Z, and -Z directions were asymmetric for all tumors, and the heterogeneity were more remarkable on the +Z and -Z directions. The CTV-PTV margins on +Z and -Z were 4.1 mm, 4.6 mm, 5.2 mm, and 8.4 mm; and 3.9 mm, 7.7 mm, 3.3 mm, and 7.7 mm for head and neck tumors, thoracic tumors, abdominal tumors, and pelvic tumors, respectively. Conclusions: The CTV-PTV margins for patients with different types of tumors were heterogeneous during tomotherapy. The individual margins of six directions should be given for those patients who accept tomotherapy. © Tong et al.
语种：
英文
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中国南方A尾矿库附近植物中铀和镉元素含量的测定与初步研究
作者：
王雅丽;陈强;张友根;宁明;邓武;...
期刊：
价值工程 ,2017年36(8):220-223 ISSN：1006-4311
作者机构：
南华大学核科学技术学院,衡阳,421001;[魏敏; 王明月; 陈强; 林睿智; 宁明; 邓武; 张友根; 苗迎超; 路萍; 王雅丽] 南华大学
关键词：
铀;镉;元素含量;测定;限值
摘要：
为评判中国南方A尾矿库附近植物的铀和镉元素含量是否符合＂食品中放射性物质限制浓度标准（GB14882-1994）＂和＂食品中污染物限值（GB2762-2012）＂的要求,从制定植物样品采集方案,现场采集植物样品,实验室处理样品,测定植物样品中铀和镉元素含量等方面开展了实验测量与初步研究工作。测量结果表明：尾矿库边界以东、南、西100m~800m范围内9个点植物样品中铀和镉元素含量测量结果范围分别位于1.14~1.48 mg/kg和0.15~0.19mg/kg,均大于或等于其对应的本底值0.24mg/kg和0.15mg/kg,小于GB14882和GB2762关于粮食和蔬菜类植物中铀和镉元素含量的浓度限值,此区域内种植粮食和蔬菜是安全的。尾矿库北面50m处植物样品中铀和镉元素含量值大于GB值,此区域内不适宜种植农作物。
语种：
中文
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Effect of coexisting cations on the adsorption of cesium onto poly (beta-cyclodextrin)/bentonite composite
作者：
Liu, Hongjuan;Xie, Shuibo* ;Wang, Tiancheng;Liu, Yingjiu;Zeng, Taotao
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2017年312(3):557-565 ISSN：0236-5731
通讯作者：
Xie, Shuibo
作者机构：
[Liu, Hongjuan; Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Wang, Tiancheng; Liu, Hongjuan] Univ South China, Inst Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, Yingjiu; Zeng, Taotao] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
通讯机构：
[Xie, Shuibo] U;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
关键词：
beta-CD/BNC;Bentonite;Cs+;Coexistent cation;Adsorption
摘要：
A novel poly(β-cyclodextrin)/bentonite composite (β-CD/BNC) was successfully prepared through graft polymerisation by using ammonium persulphate–sodium bisulphate as initiators, and characterized by FT-IR and EDS. The equilibrium data fit Freundlich isotherm satisfactorily. Adsorption kinetic was fitted with pseudo-second-order. The maximum adsorption capacities for Cs+ by β-CD/BNC in absence and presence of Na+ and Mg2+ were 48.83 ± 0.35, 47.30 ± 0.28, and 42.52 ± 0.85 mg g−1, respectively. Adsorption of Cs+ was suppressed by presence of Mg2+ more than Na+. β-CD/BNC had a higher affinity to Cs+ than Na+ and Mg2+. β-CD/BNC was an effective sorbent for the treatment cesium waste water. © 2017, Akadémiai Kiadó, Budapest, Hungary.
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英文
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Separating lanthanides and actinides from nitric acid solutions by using N,N-di(2-ethylhexyl)-diglycolamic acid (HDEHDGA)
作者：
Zhang, Y.;Yang, S.* ;Yuan, X.;Zhao, Y.;Tian, G.*
期刊：
Chemical Communications ,2017年53(48):6421-6423 ISSN：1359-7345
通讯作者：
Yang, S.;Tian, G.
作者机构：
[Tian, G.; Yuan, X.; Yang, S.; Zhao, Y.; Zhang, Y.] China Inst Atom Energy, Dept Radiochem, Beijing 102413, Peoples R China.;[Yuan, X.] Univ South China, Coll Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Tian, G.] Harbin Engn Univ, Nucl Chem Engn Dept, Harbin 150001, Heilongjiang, Peoples R China.
通讯机构：
[Yang, S; Tian, G] C;[Tian, G.] H;China Inst Atom Energy, Dept Radiochem, Beijing 102413, Peoples R China.;Harbin Engn Univ, Nucl Chem Engn Dept, Harbin 150001, Heilongjiang, Peoples R China.
摘要：
The extraction of Eu(iii), U(vi), and Pu(iv) from 0.1-3 M HNO3 solutions by using N,N-di(2-ethyl-hexyl)-diglycolamic acid (HDEHDGA) is presented. In contrast to common organic acid extractants, such as long-chain carboxylic acids, organophosphorus acids, and derivatives of beta-diketones, losing extractability, HDEHDGA exhibits a strong ability to extract lanthanide and actinide ions from high HNO3 solutions. © 2017 The Royal Society of Chemistry.
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英文
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