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Late Quaternary glacial cycle and precessional period of clay mineral assemblages in the Western Pacific Warm Pool

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Chinese Science Bulletin 2012年第28期57卷 3748-3760页

作者： wu jiawang liu {2. zhou chao state key {2. of marine Geology Tongji University Shanghai 200092 China

关键词：西太平洋暖池冰期旋回矿物组合岁差周期晚第四纪黏土河流径流量粘土矿物

10B-doped MCP detector developed for neutron resonance imaging at Back-n white neutron source

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Nuclear Science and Techniques 2024年第8期35卷 58-68页

作者： Qiang Li Li‑Jiao Wang Jing‑Yu Tang Xiang‑Biao Qiu Zhen Chen Mao‑Yuan Zhao Chang‑Jun Ning Kai Pan Wei Xu Tao Li Su‑Peng Lu Han Yi Rui‑Rui Fan Chang‑Qing Feng Rong Zhang Xiao‑Yang Sun Qi An Hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Yong‑Hao Chen Zeng‑Qi Cui An‑Chuan Fan Fan‑Zhen Feng Min‑Hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He Yong‑Cheng He Yang Hong Yi‑Wei Hu Han‑Xiong Huang Wei Jiang Zhi‑Jie Jiang Zheng‑Yao Jin Ling Kang Bo Li Gong Li Xiao Li Yang Li Jie liu Rong liu Shu‑Bin liu Yi‑Na liu Guang‑Yuan Luan Jie Ren Zhi‑zhou Ren Xi‑chao Ruan Zhao‑Hui Song Kang Sun Zhi‑Xin Tan Sheng‑Da Tang Jin‑Cheng Wang Peng‑Cheng Wang Zhao‑Hui Wang Zhong‑Wei Wen Xiao‑Guang wu Xuan wu Cong Xia Yong‑Ji Yu Guo‑Hui Zhang Hang‑Chang Zhang Lin‑Hao Zhang Qi‑Wei Zhang Xian‑Peng Zhang Yu‑Liang Zhang Yue Zhang Zhi‑Yong Zhang Zhi‑Hao zhou Ke‑Jun Zhu Chong Zou Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China state key {2. of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China state key {2. of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China North Night Vision Science and Technology(Nanjing)Research Institute Co.Ltd Nanjing 211106China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China state key {2. of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China key laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China china Academy of Engineering Physics Institute of Nuclear Physics and ChemistryMianyang 621900China USTC archaeometry lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China university of Chinese Academy of Sciences Beijing 100049China china Shipbuilding Trading Co. LtdBeijing 100044China

Neutron resonance imaging(NRI)has recently emerged as an appealing technique for neutron *** complexity surpasses that of conventional transmission imaging,as it requires a high demand for both a neutron source and ***,the progression of NRI technology has been sluggish since its inception in the 1980s,particularly considering the limited studies analyzing the neutron energy range above *** white neutron source(Back-n)at the china Spallation Neutron Source(CSNS)provides favorable beam conditions for the development of the NRI technique over a wide neutron energy range from eV to ***-sensitive microchannel plates(MCP)have emerged as a cutting-edge tool in the field of neutron detection owing to their high temporal and spatial resolutions,high detection efficiency,and low *** this study,we report the development of a 10B-doped MCP detector,along with its associated electronics,data processing system,and NRI experiments at the *** heavy elements such as gold,silver,tungsten,and indium can be easily identified in the transmission images by their characteristic resonance peaks in the 1–100 eV energy range;the more difficult medium-weight elements such as iron,copper,and aluminum with resonance peaks in the 1–100 keV energy range can also be *** particular,results in the neutron energy range of dozens of keV(Aluminum)are reported here for the first time.

关键词： Neutron resonance imaging 10B doped MCP detector White neutron source Sample nuclide identification

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台湾海峡水沙数值模拟与地貌冲淤分析

海洋学报 2024年第4期46卷 90-105页

作者：钟皓周洁琼吴自银赵荻能曹振轶朱超自然资源部第二海洋研究所浙江杭州310012 自然资源部海底科学重点实验室浙江杭州310012 上海交通大学海洋学院上海200030 卫星海洋环境动力学国家重点实验室浙江杭州310012

台湾海峡是我国最大的海峡,也是东海和南海进行物质和能量交换的主要通道。海峡内地形变化剧烈,海洋动力环境复杂,加上两侧众多山溪性河流携带大量泥沙流入海洋,是研究动力沉积作用的理想场所。目前,由于缺乏海峡整体的高分辨率地形以... 详细信息

台湾海峡是我国最大的海峡,也是东海和南海进行物质和能量交换的主要通道。海峡内地形变化剧烈,海洋动力环境复杂,加上两侧众多山溪性河流携带大量泥沙流入海洋,是研究动力沉积作用的理想场所。目前,由于缺乏海峡整体的高分辨率地形以及相关实测水文数据,以整个台湾海峡为研究区域的动力沉积模拟尚不多见。本文基于高分辨率地形和相关水文数据,建立了台湾海峡水动力数值模型,耦合泥沙输运模块,模拟台湾海峡的动力沉积过程,并用现场观测资料对模型进行了验证。动力模拟结果表明,台湾海峡的潮流流场由南、北两个潮波控制,具有明显的时间和空间特征,潮流流速夏季大于冬季,海峡中部小于南北两侧,北侧小于南侧。基于冲淤模拟结果,将台湾海峡划分为淤积区、侵蚀区、冲淤平衡区三大类共计7个沉积分区,淤积区沉积速率最大可达5 cm/a,主要集中在台湾浅滩北部,侵蚀区冲刷速率为2.5 cm/a。结合模拟结果,本文建立了台湾海峡沉积输运模式与“源-汇”格局模式,阐述了台湾海峡冲淤变化的动力学机制和“源-汇”过程。

关键词：台湾海峡数值模拟水动力泥沙输运地貌演变

Measurement of the neutron total cross section of^(9)Be at the Back-n white neutron source of CSNS

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Chinese Physics C 2024年第8期48卷 140-152页

作者： Jiangbo Bai Jingyu Tang Liqun Shi Yonghao Chen Han Yi Jie Bao Yu Bao Ping Cao Haolei Chen Zhen Chen Zengqi Cui Ruirui Fan Changqing Feng Keqing Gao Xiaolong Gao MinHao Gu Changcai Han Guozhu He Yongcheng He Yang Hong Yiwei Hu Hanxiong Huang Xiru Huang Haoyu Jiang Wei Jiang Zhijie Jiang Hantao Jing Ling Kang Bo Li chao Li Jiawen Li Qiang Li Xiao Li Yang Li Jie liu Shubin liu Ze Long Guangyuan Luan Changjun Ning Mengchen Niu Binbin Qi Jie Ren Xichao Ruan Zhaohui Song Kang Sun Zhijia Sun Zhixin Tan Xinyi Tang Binbin Tian Lijiao Wang Pengcheng Wang Zhaohui Wang Xiaoguang wu Xuan wu Likun Xie Xiaoyun Yang Li Yu Tao Yu Yongji Yu Guohui Zhang Linhao Zhang Qiwei Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Luping zhou Zhihao zhou Kejun Zhu Institute of Modern Physics Fudan UniversityShanghai 200433China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Sate key laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China key laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China state key {2. of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China state key {2. of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Northwest Institute of Nuclear Technology Xi’an 710024China university of Chinese Academy of Sciences Beijing 100049China

The neutron total cross section data of^(9)Be are essential in the nuclear structure model research of light nuclei and nuclear power *** neutron total cross section of^(9)Be in the 0.3 eV−12. MeV energy region has been measured using time-of-flight and transmission methods with the Neutron Total Cross Sectional Spectrometer(NTOX)based on the multi-cell fast fission chamber at the china Spallation Neutron Source(CSNS)-Back-n white neutron source(Back-n).The fission count-neutron energy distributions of ^(2.5)U and ^(2.8)U without samples and with Be samples with three thicknesses were measured in the double-bunch operation mode for a beam power of 100 *** Bayesian method was used to eliminate the influence of the double-bunch problem on neutron measurement in the energy region above 10 *** neutron total cross section of^(9)Be results was consistent with ENDF/B-VIII.0 evaluation library data in the 0.3 eV−2. MeV energy *** the energy ranges of 0.3 eV to 10 keV and 0.01 to 2. MeV,the deviations between our results and the evaluation results of ENDF/B-VIII.0 were within 2.5%and 15%,*** the resonance energy region,the measured resonance energies in our experiment were 0.63,0.82.and 2.8 MeV,*** results showed that the total cross section uncertainties of three Be samples were within 2.2.in the energy region below 1 *** total cross section uncertainty of 30 mm Be from ^(2.5)U was the smallest and less than 5%in the energy region of 0.3 eV−12. *** results of this experiment can provide technical support for further data analysis and related nuclear data evaluation.

关键词： ^(9)Be neutron total cross section CSNS Back-n time-of-flight method transmission method multi-cell fast fission chamber

Indoor Human Fall Detection Algorithm Based on Wireless Sensing

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Tsinghua Science and Technology 2022年第6期27卷 1002-1015页

作者： chao Wang Lin Tang Meng zhou Yinfan Ding Xueyong Zhuang Jie {2. key laboratory of Specialty Fiber Optics and Optical Access Networks Joint International Research Laboratory of Specialty Fiber Optics and Advanced CommunicationShanghai UniversityShanghai 200444China Department of Computer and Information Sciences Temple UniversityPhiladelphiaPA 19122-6096USA

As the main health threat to the elderly living alone and performing indoor activities,falls have attracted great attention from institutions and ***,fall detection systems are mainly based on wear sensors,environmental sensors,and computer vision,which need to be worn or require complex equipment ***,they have limitations and will interfere with the daily life of the *** the basis of the indoor propagation theory of wireless signals,this paper proposes a conceptual verification module using Wi-Fi signals to identify human fall *** module can detect falls without invading privacy and affecting human comfort and has the advantages of noninvasive,robustness,universality,and low *** module combines digital signal processing technology and machine learning *** paper analyzes and processes the channel state information(CSI)data of wireless signals,and the local outlier factor algorithm is used to find the abnormal CSI *** support vector machine and extreme gradient boosting algorithms are used for classification,recognition,and comparative *** results show that the average accuracy of fall detection based on wireless sensing is more than 90%.This work has important social significance in ensuring the safety of the elderly.

关键词： wireless signal channel status information fall detection wireless sensing

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海洋导管架平台弃置方案与技术方法研究进展

海洋学研究 2024年第2期42卷 113-124页

作者：张宗峰陈同彦周家兴赵徐唐超聂元训刘锦昆吴必胜中国石化上海海洋油气分公司上海200120 中石化石油工程设计有限公司山东东营257026 清华大学水利水电工程系北京100084 清华大学水利部水圈科学重点实验室北京100084 清华大学水圈科学与水利工程全国重点实验室北京100084

导管架平台具有适应性强、安全性高等优势,在海上油气开发中应用广泛。随着越来越多的导管架平台即将达到或已达到设计寿命,平台弃置已成为海洋油气开发领域面临的重要问题。该文系统介绍了国内外关于导管架平台弃置的法律法规,重点阐... 详细信息

导管架平台具有适应性强、安全性高等优势,在海上油气开发中应用广泛。随着越来越多的导管架平台即将达到或已达到设计寿命,平台弃置已成为海洋油气开发领域面临的重要问题。该文系统介绍了国内外关于导管架平台弃置的法律法规,重点阐述了各国际公约的约束内容、适用范围及其异同点,总结了中国、英国、挪威、美国弃置管理的要点,对国内外四个典型导管架弃置工程进行了梳理和分析,对不同弃置方案适用范围以及弃置过程中拆除、切割和吊装三个关键工艺的操作难点和实施细节进行了总结,可为海洋导管架平台弃置方案与关键技术的优选提供依据,对海洋环境保护、通航和渔业生产等具有重要的工程意义。

关键词：海洋油气开采导管架平台弃置技术方案

Dissolution, Hydrolysis and Crystallization Behavior of Polyamide 6 in Superheated Water

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Chinese Journal of Polymer Science 2015年第9期33卷 1334-1343页

作者： Zhi-liang Wang Jia-li Xu Lian-jia wu Xin Chen 杨曙光 Hui-chao {2. Xian-ju zhou state key {2. for Modification of Chemical Fibers and Polymer Materials College of Material Science and Engineering Donghua University R & D Center Guangdong Xinhui Meida Nylon Co. LTD. Department of Mathematics and Physics Chongqing University of Posts and Telecommunications

The dissolution, crystallization and hydrolysis behaviors of polyamide 6 （PA 6） in superheated water （140℃ _〈 TH 〈 2.0 ℃） are investigated. The hydrothermal processing of PA 6 can be divided into four regions：（I） TH 〈 140 ℃, （II） 140 ℃ 〈 TH 〈 155 ℃, （III） 155 ℃ 〈 TH 〈 160℃ and （IV） TH 〉 160 ℃. Below 140 ℃, the hydrothermal processing does not have obvious impact on PA 6. Between 140 ℃ and 155 ℃, an annealing effect is observed that the hydrothermally treated resin shows increased melting temperature and lamellar thickness compared with the original PA 6. Between 155 ℃ and 160 ℃, the hydrothermal processing induces both annealing and surface swelling. Above 160 ℃, PA 6 dissolves fully in the superheated water. As PA 6 dissolves in the superheated water, hydrolysis takes place and becomes more prominent at higher temperatures and longer processing time. The hydrolysis induced molecular weight decrease fits an exponential decay.

关键词： Nylon 6 Superheated water Annealing Crystallization Hydrolysis.

Structural insights into substrate recognition and translocation of human peroxisomal ABC transporter ALDP

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Signal Transduction and Targeted Therapy 2023年第3期8卷 1269-1281页

作者： chao Xiong Li-Na Jia Wei-Xi Xiong Xin-Tong wu {2.-Lin Xiong Ting-Hua Wang Dong zhou Zhen Hong Zheng {2. Lin Tang Department of Neurology State Key Lab of Biotherapy and Cancer CenterWest China HospitalSichuan University and Collaborative Innovation Center for Biotherapy610041 ChengduSichuanChina Institute of Brain Science and Brain-inspired Technology of West china Hospital Sichuan UniversityChengduChina Institute of Neurological Disease State Key Lab of BiotherapyWest China HospitalSichuan University610041 ChengduSichuanChina School of Life and Health Kobilka Institute of Innovative Drug Discoverythe Chinese University of Hong Kong(Shenzhen)ShenzhenChina

Dysfunctions of ATP-binding cassette,subfamily D,member 1(ABCD1)cause X-linked adrenoleukodystrophy,a rare neurodegenerative disease that affects all human *** in the peroxisome membrane,ABCD1 plays a role in the translocation of very long-chain fatty acids for theirβ-***,the six cryo-electron microscopy structures of ABCD1 in four distinct conformational states were *** the transporter dimer,two transmembrane domains form the substrate translocation pathway,and two nucleotide-binding domains form the ATP-binding site that binds and hydrolyzes *** ABCD1 structures provide a starting point for elucidating the substrate recognition and translocation mechanism of *** of the four inward-facing structures of ABCD1 has a vestibule that opens to the cytosol with variable *** acid(C2.:0)-CoA substrate binds to the transmembrane domains(TMDs)and stimulates the ATPase activity of the nucleotide-binding domains(NBDs).W339 from the transmembrane helix 5(TM5)is essential for binding substrate and stimulating ATP hydrolysis by ***1 has a unique C-terminal coiled-coil domain that negatively modulates the ATPase activity of the ***,the structure of ABCD1 in the outward-facing state indicates that ATP molecules pull the two NBDs together and open the TMDs to the peroxisomal lumen for substrate *** five structures provide a view of the substrate transport cycle and mechanistic implication for disease-causing mutations.

关键词： starting hydrolysis insight

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei {2. Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH university of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central china Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan china academy of engineering physics MianyangSichuan china building materials academy Beijing china Center of Advanced Science and Technology Beijing china Institute of Atomic Energy Beijing china Jiliang university HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china university of Geosciences Beijing china university of Geosciences WuhanHubei china university of Mining and Technology XuzhouJiangsu china West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East china university Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by china,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2.s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2.15)and the Conceptual Design Report(CDR,2.18),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2.2.-2.2.,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2.30s.

关键词： initiated exceeding precise