检索结果-内蒙古大学图书馆

High temperature steam oxidation behavior of AlCrNbTiZr high entropy alloy coating modified by irradiation-induced atomic diffusion

引用

Surface and Coatings technology 2025年

作者： Zhaoming Yang Yuhuan Zeng Yinghao Ma Hengji He Ming Gu Guoqiang Zeng Chunhai Liu College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu 610059 China Post-Doctoral Research Station of Nuclear Science and Technology Chengdu University of Technology Chengdu 610059 China China Institute for Radiation Protection Taiyuan 030006 China College of Materials and Chemistry & Chemical Engineering Chengdu University of Technology Chengdu 610059 China School of Integrated Circuit Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China

High entropy alloys (HEAs) are considered as potential accident tolerant fuel (ATF) coatings due to their excellent properties. However, there is still a lack of understanding about the effects of irradiation on the steam oxidation behavior, which hinders the design of advanced ATF HEAs coatings. In the current work, the steam oxidation behavior of Au ions irradiated AlCrNbTiZr HEA coatings was investigated. It is found that irradiation changes the high-temperature steam oxidation behavior of the material primarily by enhancing elemental diffusion. Irradiation accelerated oxidation by increasing the diffusion rate and depth of oxygen (O). Irradiation optimized the phase composition of the surface oxide layer by enhancing outward diffusion of Ti, thereby releasing releases the growth stress of oxides and avoids cracking and peeling of the surface oxide layer.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Search for Solar Boosted Dark Matter Particles at the PandaX-4T Experiment

引用

Physical Review Letters 2025年第16期134卷 161003-161003页

作者： Guofang Shen Zihao Bo Wei Chen Xun Chen Yunhua Chen Zhaokan Cheng Xiangyi Cui Yingjie Fan Deqing Fang Zhixing Gao Lisheng Geng Karl Giboni Xunan Guo Xuyuan Guo Zichao Guo Chencheng Han Ke Han Changda He Jinrong He Di Huang Houqi Huang Junting Huang Ruquan Hou Yu Hou Xiangdong Ji Xiangpan Ji Yonglin Ju Chenxiang Li Jiafu Li Mingchuan Li Shuaijie Li Tao Li Zhiyuan Li Qing Lin Jianglai Liu Congcong Lu Xiaoying Lu Lingyin Luo Yunyang Luo Wenbo Ma Yugang Ma Yajun Mao Yue Meng Xuyang Ning Binyu Pang Ningchun Qi Zhicheng Qian Xiangxiang Ren Dong Shan Xiaofeng Shang Xiyuan Shao Manbin Shen Wenliang Sun Yi Tao Anqing Wang Guanbo Wang Hao Wang Jiamin Wang Lei Wang Meng Wang Qiuhong Wang Shaobo Wang Siguang Wang Wei Wang Xiuli Wang Xu Wang Zhou Wang Yuehuan Wei Weihao Wu Yuan Wu Mengjiao Xiao Xiang Xiao Kaizhi Xiong Yifan Xu Shunyu Yao Binbin Yan Xiyu Yan Yong Yang Peihua Ye Chunxu Yu Ying Yuan Zhe Yuan Youhui Yun Xinning Zeng Minzhen Zhang Peng Zhang Shibo Zhang Shu Zhang Tao Zhang Wei Zhang Yang Zhang Yingxin Zhang Yuanyuan Zhang Li Zhao Jifang Zhou Jiaxu Zhou Jiayi Zhou Ning Zhou Xiaopeng Zhou Yubo Zhou Zhizhen Zhou Haipeng An Haoming Nie School of Physics Beihang University Beijing 102206 China School of Physics and Astronomy Shanghai Jiao Tong University Key Laboratory for Particle Astrophysics and Cosmology (MoE) Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai 200240 China New Cornerstone Science Laboratory Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai 201210 China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213 China Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province China Yalong River Hydropower Development Company Ltd. 288 Shuanglin Road Chengdu 610051 China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen University Zhuhai 519082 China Department of Physics Yantai University Yantai 264005 China Key Laboratory of Nuclear Physics and Ion-beam Application (MoE) Institute of Modern Physics Fudan University Shanghai 200433 China Peng Huanwu Collaborative Center for Research and Education Beihang University Beijing 100191 China International Research Center for Nuclei and Particles in the Cosmos and Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang University Beijing 100191 China Southern Center for Nuclear-Science Theory (SCNT) Institute of Modern Physics Chinese Academy of Sciences Huizhou 516000 China SJTU Paris Elite Institute of Technology Shanghai Jiao Tong University Shanghai 200240 China School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China Department of Physics University of Maryland College Park Maryland 20742 USA School of Physics Nankai University Tianjin 300071 China School of Physics Sun Yat-Sen University Guangzhou 510275 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China Research Center for Particle Science and Technology

We present a novel constraint on light dark matter utilizing 1.54 metric ton/year of data acquired from the PandaX-4T dual-phase xenon time projection chamber. This constraint is derived through detecting electronic recoil signals resulting from the interaction with solar-enhanced dark matter flux. Low-mass dark matter particles, lighter than a few MeV/c2, can scatter with the thermal electrons in the Sun. Consequently, with higher kinetic energy, the boosted dark matter component becomes detectable via contact scattering with xenon electrons, resulting in a few keV energy deposition that exceeds the threshold of PandaX-4T. We calculate the expected recoil energy in PandaX-4T considering the Sun’s acceleration with heavy mediators and the detection capabilities of the xenon detector. The first experimental search results using the xenon detector yield the most stringent upper limits cross section of 3.51×10−39 cm2 at 0.08 MeV/c2 for a solar boosted dark matter mass ranging from 0.02 to 10 MeV/c2, achieving a 23-fold improvement compared with earlier experimental studies.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Design of weak current measurement system and research on temperature impact

引用

nuclear Science and Techniques 2024年第4期35卷 46-56页

作者： Chu-Xiang Zhao San-Gang Li Rong-Rong Su Li Yang Ming-Zhe Liu Qing-Yue Xue Shan Liao Zhi Zhou Qing-Shan Tan Xian-Guo Tuo Yi Cheng College of Nuclear Technology and Automation Engineering Chengdu University of Technology1#DongsanluErxianqiaoChengdu 610059China Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province Chengdu University of Technology1#DongsanluErxianqiaoChengdu 610059China University of Science and Technology of China Hefei 230026China School of Physics and Electronic Engineering Sichuan University of Science and EngineeringZigong 643000China

A dedicated weak current measurement system was designed to measure the weak currents generated by the neutron ionization *** system incorporates a second-order low-pass filter circuit and the Kalman filtering algorithm to effectively filter out noise and minimize interference in the measurement *** conducted under normal temperature conditions has demonstrated the system's high precision ***,it was observed that temperature variations can affect the measurement *** were collected across temperatures ranging from -20 to 70℃,and a temperature correction model was established through linear regression fitting to address this *** feasibility of the temperature correction model was confirmed at temperatures of -5 and 40℃,where relative errors remained below 0.1% after applying the temperature *** research indicates that the designed measurement system exhibits excellent temperature adaptability and high precision,making it particularly suitable for measuring weak currents.

关键词： Weak current measurement system Neutron ionization chamber Kalman filter algorithm Temperature correction model

来源：评论

学校读者我要写书评

暂无评论

An Improved CREAM Model Based on DS Evidence Theory and DEMATEL

引用

Computer Modeling in engineering & Sciences 2024年第3期138卷 2597-2617页

作者： Zhihui Xu Shuwen Shang Yuntong Pu Xiaoyan Su Hong Qian Xiaolei Pan State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment Shenzhen518172China School of Automation Engineering Shanghai University of Electric PowerShanghai200090China School of Safety and Management Engineering Hunan Institute of TechnologyHengyang421002China

Cognitive Reliability and Error Analysis Method(CREAM)is widely used in human reliability analysis(HRA).It defines nine common performance conditions(CPCs),which represent the factors thatmay affect human reliability and are used to modify the cognitive failure probability(CFP).However,the levels of CPCs are usually determined by domain experts,whichmay be subjective and ***’smore,the classicCREAMassumes that the CPCs are independent,which is *** the dependence among CPCs will result in repeated calculations of the influence of the CPCs on CFP and lead to unreasonable reliability *** address the issue of uncertain information modeling and processing,this paper introduces evidence theory to evaluate the CPC levels in specific *** address the issue of dependence modeling,the Decision-Making Trial and Evaluation Laboratory(DEMATEL)method is used to process the dependence among CPCs and calculate the relative weights of each CPC,thus modifying the multiplier of the *** detailed process of the proposed method is illustrated in this paper and the CFP estimated by the proposed method is more reasonable.

关键词： Human reliability analysis CREAM uncertainty modeling dependence Dempster-Shafer evidence theory DEMATEL

来源：评论

学校读者我要写书评

暂无评论

A method for correcting characteristic X-ray net peak count from drifted shadow peak

引用

nuclear Science and Techniques 2023年第11期34卷 155-167页

作者： Lin Tang Xing‑Ke Ma Kai‑Bo Shi Yeng‑Chai Soh Hong‑Tao Shen College of Electronic Information and Electrical Engineering Chengdu UniversityChengdu 610106China Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology Guangxi Normal UniversityGuilin 541004China National Engineering Research Center for Agro-Ecological Big Data Analysis and Application Anhui UniversityHefei 230039China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore College of Nuclear Technology and Automation Engineering Chengdu University of TechnologyChengdu 610059China

To correct spectral peak drift and obtain more reliable net counts,this study proposes a long short-term memory(LSTM)model fused with a convolutional neural network(CNN)to accurately estimate the relevant parameters of a nuclear pulse signal by learning of samples.A predefined mathematical model was used to train the CNN-LSTM model and generate a dataset composed of distorted pulse *** trained model was validated using simulated *** relative errors in the amplitude estimation of pulse sequences with different degrees of distortion were obtained using triangular shaping,CNN-LSTM,and LSTM *** a result,for severely distorted pulses,the relative error of the CNN-LSTM model in estimating the pulse parameters was reduced by 14.35%compared with that of the triangular shaping *** slightly distorted pulses,the relative error of the CNN-LSTM model was reduced by 0.33%compared with that of the triangular shaping *** model was then evaluated considering two performance indicators,the correction ratio and the efficiency ratio,which represent the proportion of the increase in peak area of the two characteristic peak regions of interest(ROIs)to the peak area of the corrected characteristic peak ROI and the proportion of the increase in peak area of the two characteristic peak ROIs to the peak areas of the two shadow peak ROI,*** measurement results of the iron ore samples indicate that approximately 86.27%of the decreased peak area of the shadow peak ROI was corrected to the characteristic peak ROI,and the proportion of the corrected peak area to the peak area of the characteristic peak ROI was approximately 1.72%.The proposed CNN-LSTM model can be applied to X-ray energy spectrum correction,which is of great significance for X-ray spectroscopy and elemental content analyses.

关键词： Peak correction Triangular shaping Deep learning Long short-term memory Convolutional neural network X-ray fluorescence spectroscopy Silicon drift detector

来源：评论

学校读者我要写书评

暂无评论

Failure Mode and Effects Analysis Based on Z-Numbers and the Graded Mean Integration Representation

引用

Computer Modeling in engineering & Sciences 2023年第2期134卷 1005-1019页

作者： Hanhan Zhang Zhihui Xu Hong Qian Xiaoyan Su School of Automation Engineering Shanghai University of Electric PowerShanghai200090China State Key Laboratory of Nuclear Power Safety Monitorig Technology and Equipment Shenzhen518172China

Failuremode and effects analysis(FMEA)is a widely used safety assessmentmethod inmany fields.Z-number was previously applied in FMEA since it can take both possibility and reliability of information into ***,the use of fuzzy weighted mean to integrate Z-valuations may have some drawbacks and is not suitable for some *** this paper,an improved method is proposed based on Z-numbers and the graded mean integration representation(GMIR)to deal with the uncertain information in ***,Z-numbers are constructed based on the evaluations of risk factors O,S,D for each failure mode by different ***,weights of the three risk factors and experts are ***,the integration representations of Z-numbers are obtained by a newmethod based on the ***,risk priorities of the failure modes are derived considering the weights of experts and risk *** examples and a case study are given to show the use of the proposed method and comparison with other *** results show that the proposed method is more reasonable,universal and simple in calculation.

关键词： Safety assessment FMEA risk priority number Z-number the graded mean integration representation

来源：评论

学校读者我要写书评

暂无评论

Handling Uncertainty in Human Cognitive Reliability Method for Safety Assessment Based on DSET

引用

Computer Modeling in engineering & Sciences 2022年第7期132卷 201-214页

作者： Yujun Su Xianghao Gao Hong Qian Xiaoyan Su State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment Shenzhen518172China School of Automation Engineering Shanghai University of Electric PowerShanghai200090China

Human Reliability Analysis(HRA)is an important part in safety assessment of a large complex *** Cognitive Reliability(HCR)model is a method of evaluating the probability that operators fail to complete during diagnostic decision making within a limited time,which is widely used in *** the application of this method,cognitive patterns of humans are required to be considered and classified,and this process often relies on the evaluation opinions of experts which is highly subjective and *** to effectively express and process this uncertain and subjective information plays a critical role in improving the accuracy and applicability of *** this paper,a new model was proposed to deal with the uncertain information which exists in the processes of cognitive pattern classification in ***,an evaluation panel was constructed based on expert opinions and processing including setting corresponding anchor points and qualitative indicators of different cognitive patterns,and mapping them to fuzzy numbers and unit ***,based on the evaluation panel,different analysts judge the cognitive pattern types of actual specific events and provide the level of confidence he or she has in the ***,the evaluation opinions of multiple analysts were expressed and fused based on the Dempster-Shafer Evidence Theory(DSET),and the fused results were applied to the HCR model to obtain the Human Error Probability(HEP).A case study was used to demonstrate the procedure and effectiveness of the proposed method.

关键词： Safety assessment human reliability analysis human cognitive reliability human error probability DempsterShafer evidence theory

来源：评论

学校读者我要写书评

暂无评论

Using Memory Alloy Material to Solve the Problem of Ice-covered Sag of Overhead Ground Wire of Transmission Line 2

Using Memory Alloy Material to Solve the Problem of Ice-cove...

引用

2nd IEEE China International Youth Conference on Electrical engineering, CIYCEE 2021

作者： Zhang, Yu Chen, Tianxiang Teng, Fuli Zhang, Ying School of Nuclear Technology and Automation Engineering Chengdu University of Technology China College of Electrical Engineering Sichuan University China

ISBN: (纸本)9781665400640

This paper analyzes the hazards of the ice-covered sag of the overhead ground wire of the transmission line, understands and grasps the causes of the excessive grounding sag of the high-voltage power line. To reduce the overhead ground wire ice sag, based on the conductor LGJ- 240/30 type, ground of GJ- 50 type ground of high voltage transmission lines ice sag problem as the research object, using shape memory alloy material temperature deformation characteristics has designed two kinds of overhead ground wire ice sag, using memory alloy temperature of phase transformation point of turning force on ground wire, make it keep safe distance between wires, and auxiliary deicing, automatically. The stress, sag, tension and gravity of the ground wire are calculated with the typical overhead ground wire design, and the memory alloy spring is selected. According to the design scheme, the simulation test is carried out and the feasibility of the design scheme is proved. © 2021 IEEE.

关键词： Ice

来源：评论

学校读者我要写书评

暂无评论

Assessment of Dependent Performance Shaping Factors in SPAR-H Based on Pearson Correlation Coefficient

引用

Computer Modeling in engineering & Sciences 2024年第2期138卷 1813-1826页

作者： Xiaoyan Su Shuwen Shang Zhihui Xu Hong Qian Xiaolei Pan School of Automation Engineering Shanghai University of Electric PowerShanghai 200090China State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment Shenzhen518172China

With the improvement of equipment reliability,human factors have become the most uncertain part in the *** standardized Plant Analysis of Risk-Human Reliability Analysis(SPAR-H)method is a reliable method in the field of human reliability analysis(HRA)to evaluate human reliability and assess risk in large complex ***,the classical SPAR-H method does not consider the dependencies among performance shaping factors(PSFs),whichmay cause overestimation or underestimation of the risk of the actual *** address this issue,this paper proposes a new method to deal with the dependencies among PSFs in SPAR-H based on the Pearson correlation ***,the dependence between every two PSFs is measured by the Pearson correlation ***,the weights of the PSFs are obtained by considering the total dependence ***,PSFs’multipliers are modified based on the weights of corresponding PSFs,and then used in the calculating of human error probability(HEP).A case study is used to illustrate the procedure and effectiveness of the proposed method.

关键词： Reliability evaluation human reliability analysis SPAR-H performance shaping factors dependence pearson correlation analysis

来源：评论

学校读者我要写书评

暂无评论

A new operation model of e-business

A new operation model of e-business

引用

International Conference on Internet technology and Applications, ITAP 2010

作者： Song, Bo Zhang, Haiwei School of Network Engineering Chengdu University of Information Technology ChengDu China School of Nuclear Technology and Automation Engineering Chengdu University of Technology ChengDu China

ISBN: (纸本)9781424451432

This paper mainly analyzes the main models of E-business , discusses the current situations of E-business, and on the basis of the present situations of E-business, put forward a new operation model B2B2C (Business to Business to Consumer). Based on this model, some typical cases are given, so that present e-business enterprises can be enlightened. At last, a sum-up and prospect for e-business is given. ©2010 IEEE.

关键词： Electronic commerce

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：