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Effects and complications of placement of motility coupling post in porous polyethylene orbital implants

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第6期9卷 464-469页

作者： hong-guang cui rong-rong hu hui-yan li wei han Department of Ophthalmology the First Affiliated Hospital School of Medicine Zhejiang University Hangzhou 310003 China

Objective： To investigate the effects and complications of primary and secondary placements of motility coupling post （MCP） in the unwrapped porous polyethylene orbital implant （PPOI） following enucleation. Methods： We investigated 198 patients who received PPOI implantation following the standard enucleation procedure in the First Affiliated Hospital, School of Medicine, Zhejiang University, hangzhou, China, from 2002 to 2004. These patients were subgrouped into PPOI-only patients （112 cases, received PPOI following enucleation）, primary MCP patients （46 cases, received primary placement of MCP during PPOI operation）, and secondary MCP patients （40 cases, received secondary placement ofMCP 6 months after the initial surgery）. Effects and complications among these three groups were compared. Results： The PPOI-only patients took shorter treatment course when compared with other two MCP groups （P〈0.001）, without significant difference noted between the two MCP groups. However, the two MCP groups had better prosthetic motility than PPOI-only group （P〈0.001）, without significant difference between the two MCP groups. In the early stage, 2 eyes in the PPOI-only group and l eye in the primary MCP group had PPOI infection. In PPOI-only group, 3 （2.68%） eyes had PPOI exposure, which occurred after fitting the prostheses; 4 eyes （8.70%） in primary MCP group and 1 eye （2.50%） in secondary MCP had PPOI exposure, which occurred before fitting the prostheses. After prosthesis was fit successfully, the excessive discharge and granuloma were 33.9% and 1.79% in PPOI group-only, 53.3% and 8.9% in primary MCP group, and 52.5% and 7.5% in secondary MCP group, respectively. Conclusion： Both primary and secondary placements of MCP into the PPOI following enucleation can help patients to obtain desirable prosthetic motility, but may be associated with more complications. The primary placement of MCP with skilled operation in selected patients is more recommendable than secondary placemen

关键词： Porous polyethylene orbital implant (PPOI) Motility coupling post (MCP)

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Deuterium distribution and behavior of blisters in pre-damaged and undamaged tungsten

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Tungsten 2024年第3期6卷 647-656页

作者： Cong li Xiao-Wa Wang Ran-Ran Su Xuan-Xin hu Shu-guang wei han-Jun Tu li-Qun Shi hong-liang Zhang Key Laboratory of Nuclear Physics and Ion-Beam Application Institute of Modern Physics Fudan University School of Mechanical Engineering Shanghai Jiao Tong University Department of Materials Science and Engineering University of Wisconsin

Tungsten(W),as a plasma-facing material,is subjected to high fluence plasma,resulting in both radiation damage and deuterium(D) *** study explores the blistering behavior and D supersaturated layers in both pre-damaged and undamaged W *** achieve a uniform damage profile similar to neutron irradiation,carbon(C) ions with multiple energies and angles were *** samples were further irradiated with low-energy D ions under two fluences at temperatures from ～380 to 640 *** various experimental techniques,we found that pre-damaged W samples can effectively suppress the formation of blistering and lower the threshold temperature at which the surface remains free of *** also observed the prominent D supersaturated peaks within the depth of 20 nm in both pre-damaged and undamaged ***,a close correlation between blistering and the D supersaturation was *** results suggest that neutron irradiation in the fusion reactors could increase the critical D concentration for blistering,while a greater depth of damage facilitated the inward diffusion of D,thereby reducing the D concentration gradient and alleviating surface blistering.

关键词： Tungsten Deuterium Supersaturated layer Blister Ion irradiation Pre-damage

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Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

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Nuclear Science and Techniques 2024年第8期35卷 132-141页

作者： Qiang li li‑Jiao Wang Xiang‑Biao Qiu Jing‑Wen li wei Xu Tao li Ze‑Bin lin Chang‑Jun Ning Yong‑Hao Chen Rui‑Rui Fan Kang Sun Jing‑Yu Tang rong Zhang han‑Tao Jing Bo Mei Qi An Hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Zhen Chen Zeng‑Qi cui An‑Chuan Fan Chang‑Qing Feng Fan‑Zhen Feng Ke‑Qing Gao Min‑Hao Gu Chang‑Cai han Zi‑Jie han Guo‑Zhu He Yong‑Cheng He yang hong Yi‑wei hu han‑Xiong huang wei‑hua Jia Hao‑Yu Jiang wei Jiang Zhi‑Jie Jiang Zheng‑Yao Jin ling Kang Bo li Chao li Gong li Jia‑Wen li Xiao li yang li Jie liu rong liu Shu‑Bin liu guang‑Yuan Luan Bin‑Bin Qi Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan Zhao‑hui Song Zhi‑Xin Tan Sheng‑Da Tang Peng‑Cheng Wang Zhao‑hui Wang Zhong‑wei Wen Xiao‑guang Wu Xuan Wu li‑Kun Xie Yi‑wei yang han Yi Yong‑Ji Yu Guo‑hui Zhang lin‑Hao Zhang Mo‑han Zhang Qi‑wei Zhang Xian‑Peng Zhang Yu‑liang Zhang Yue Zhang Zhi‑Yong Zhang Mao‑Yuan Zhao Lu‑Ping Zhou Zhi‑Hao Zhou Ke‑Jun Zhu Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China North Night Vision Science&Technology(Nanjing)Research Institute Co.Ltd. Nanjing 211106China Sino‑French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China 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

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.10B-doped MCPs(B-MCPs)have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy *** spatial and temporal resolutions are useful for neutron energy-resolved ***,their practical applications still face many technical *** this study,a B-MCP with 10 mol%10B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the China Spallation Neutron *** neutron detection efficiency was calibrated at 1 eV,which is approximately 300 times that of an ordinary MCP and indicates the success of 10 B *** factors that caused the reduction in the detection efficiency were simulated and *** neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods,and showed very good consistency for neutron energies below tens of *** response is more complicated at higher neutron energy,at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become *** is beneficial for the detection of neutrons,as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

关键词： Neutron radiation image 10B-doped MCP Neutron response Wide-energy range neutrons

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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 Laboratory 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 Laboratory 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 Laboratory 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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Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n

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Nuclear Science and Techniques 2024年第1期35卷 178-187页

作者： Sheng-Da Tang Yong-Hao Chen Jing-Yu Tang Rui-Rui Fan Qiang li Gong li Dong liu Zheng-Yao Jin Xing-Zhu cui Tian-Xiang Chen Yi-wei yang rong liu han Yi yang li Zhen yang Qi An Hao-Fan Bai Jiang-Bo Bai Jie Bao Ping Cao Qi-Ping Chen Zhen Chen Zeng-Qi cui An-Chuan Fan Chang-Qing Feng Fan-Zhen Feng Ke-Qing Gao Min-Hao Gu Chang-Cai han Zi-Jie han Guo-Zhu He Yong-Cheng He yang hong Yi-wei hu han-Xiong huang wei-hua Jia Hao-yu Jiang wei Jiang Zhi-jie Jiang ling Kang Bo li Chao li Jia-Wen li Xiao li Jie liu Shu-Bin liu guang-Yuan Luan Chang-Jun Ning Bin-Bin Qi Jie Ren Zhi-Zhou Ren Xi-Chao Ruan Zhao-hui Song Kang Sun Zhi-Xin Tan li-Jiao Wang Peng-Cheng Wang Zhao-hui Wang Zhong-wei Wen Xiao-guang Wu Xuan Wu li-Kun Xie Yong-Ji Yu Guo-hui Zhang lin-Hao Zhang Mo-han Zhang Qi-wei Zhang Xian-Peng Zhang Yu-liang Zhang Yue Zhang Zhi-Yong Zhang Mao-Yuan Zhao Lu-Ping Zhou Zhi-Hao Zhou Ke-Jun Zhu Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Institute of High-Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China USTC Archaeometry Laboratory University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Nondestructive and noninvasive neutron assays are essential applications of neutron *** resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental composition of an *** back-streaming neutron line(Back-n)is a newly built time-of-flight facility at the China Spallation Neutron Source(CSNS)that provides neutrons in the eV to 300 MeV range.A feasibility study of the NRTA method for nuclide identification was conducted at the CSNS Back-n via two test *** results demonstrate that it is feasible to identify different elements and isotopes in samples using the NRTA method at *** study reveals its potential future applications.

关键词： CSNS White neutron beam NRTA Nuclide identification Nondestructive method

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Characterization of a pangolin SARS-CoV-2-related virus isolate that uses the human ACE2 receptor

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Science China(life Sciences) 2024年第7期67卷 1502-1513页

作者： Luo-Yuan Xia Xue-Feng Wang Xiao-Ming cui Yi-Ming Zhang Zhen-Fei Wang En-Tao li Chang-Fa Fan Ke Song Yuan-Guo li Run-Ze Ye Fang-Xu li Dai-Yun Zhu Jie Zhang Zhuang-Zhuang Shi Ming-Zhu Zhang liang-Jing li Shi-Jing Shen Song Jin Ya-wei Zhang wei-guang Fu lin Zhao Wen-Hao Wang Tie-Cheng Wang You-Chun Wang Jia-Fu Jiang yan-ling hu Na Jia Yu-wei Gao Wu-Chun Cao Institute of EcoHealth School of Public HealthCheeloo College of MedicineShandong UniversityJinan 250012China Changchun Veterinary Research Institute Changchun 130122China State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and EpidemiologyBeijing 100071China Division of Animal Model Research Institute for Laboratory Animal ResourcesNational Institutes for Food and Drug ControlBeijing 102629China National Institutes for Food and Drug Control Beijing 102629China life Sciences Institute Guangxi Medical UniversityNanning 530020China College of life Sciences Shandong Normal UniversityJinan 250014China Research Unit of Discovery and Tracing of Natural Focus Diseases Chinese Academy of Medical SciencesBeijing 100071China

Various SARS-CoV-2-related coronaviruses have been increasingly identified in pangolins,showing a potential threat to *** we report the infectivity and pathogenicity of the SARS-CoV-2-related virus,PCoV-GX/P2V,which was isolated from a Malayan pangolin(Manis javanica).PCoV-GX/P2V could grow in human hepatoma,colorectal adenocarcinoma cells,and human primary nasal epithelial *** replicated more efficiently in cells expressing human angiotensin-converting enzyme 2(hACE2)as SARS-CoV-2 *** intranasal inoculation to the hACE2-transgenic mice,PCoV-GX/P2V not only replicated in nasal turbinate and lungs,but also caused interstitial pneumonia,characterized by infiltration of mixed inflammatory cells and multifocal alveolar *** population immunity established by SARS-CoV-2 infection and vaccination may not protect people from PCoV-GX/P2V *** findings further verify the hACE2 utility of PCoV-GX/P2V by in vivo experiments using authentic viruses and highlight the importance for intensive surveillance to prevent possible cross-species transmission.

关键词： pangolin SARS-CoV-2-related virus infectivity pathogenicity human cell lines human ACE2 receptor hACE2-transgenic mice

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高危儿神经发育障碍预防性早期干预研究进展

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中国当代儿科杂志 2024年第3期26卷 297-301页

作者：农绍汉余卫红李翠红(综述) 周晓光(审校) 广东省人民医院/广东省医学科学院新生儿科广东广州510080 中山大学附属第八医院新生儿科广东深圳518033 云南省文山壮族苗族自治州人民医院新生儿科云南文山663000

儿童神经发育障碍已成为影响全球儿童健康的重大公共卫生问题。国内目前对高危儿一般采用“早期诊断、早期治疗”的干预模式。近年来,国外开始探讨高危儿神经发育障碍的预防性早期干预新技术,并取得较好效果。该文对高危儿神经发育障碍... 详细信息

儿童神经发育障碍已成为影响全球儿童健康的重大公共卫生问题。国内目前对高危儿一般采用“早期诊断、早期治疗”的干预模式。近年来,国外开始探讨高危儿神经发育障碍的预防性早期干预新技术,并取得较好效果。该文对高危儿神经发育障碍预防性早期干预的开始时机、方法和干预模式等进行综述,以期提高临床医生对高危儿神经发育障碍预防性早期干预技术的认识水平,促进此干预技术在我国的临床研究与应用,降低高危儿神经发育障碍的发生率。

关键词：神经发育障碍预防性干预高危儿

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电解水制氢以及氢燃料电池用聚电解质阴离子交换膜的研究进展

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高分子通报 2024年第9期37卷 1210-1221页

作者：李佳纯韩晨光胡超魏天鹤贾妍张瑛中国石油大学(北京)新能源与材料学院北京102249

氢能是一种具有广阔应用前景的新能源,阴离子交换膜电解水制氢技术(AEMWE)与阴离子交换膜氢燃料电池技术(AEMFC)被认为是极具发展前景的氢能源技术,两者均需要聚电解质阴离子交换膜(AEM)。本综述首先概述了AEMWE和AEMFC技术原理,提出AE... 详细信息

氢能是一种具有广阔应用前景的新能源,阴离子交换膜电解水制氢技术(AEMWE)与阴离子交换膜氢燃料电池技术(AEMFC)被认为是极具发展前景的氢能源技术,两者均需要聚电解质阴离子交换膜(AEM)。本综述首先概述了AEMWE和AEMFC技术原理,提出AEM的技术要求,解释了AEM中OH^(-)的传输机制。接着根据主链结构的不同,重点对聚芳醚类、聚苯并咪唑类、聚苯烷撑类、聚烯烃类阴离子交换膜的研究进展进行了详细介绍,旨在为今后AEM的研发和设计提供思路。

关键词：氢能电解水制氢氢燃料电池聚电解质阴离子交换膜

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基于CEL法的砂土中相邻XCC桩贯入对既有XCC单桩影响的研究

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中国公路学报 2024年第4期37卷 141-154页

作者：周鹏夏良利刘汉龙徐长节崔杰曹光伟丁选明华东交通大学土木建筑学院江西南昌330013 广州大学工程抗震研究中心广东广州510006 重庆大学土木工程学院重庆400045 福州大学紫金地质与矿业学院福建建福州350116

目前现浇X形桩(XCC桩)的研究主要集中于黏土地基,而对于砂土中XCC桩的相关研究却很少;此外,在研究XCC桩贯入问题时,主要分析的是沉桩挤土效应,而忽略了实际工程施工中挤土位移荷载会对邻近既有桩产生附加桩身响应这一关键问题。为此,利... 详细信息

目前现浇X形桩(XCC桩)的研究主要集中于黏土地基,而对于砂土中XCC桩的相关研究却很少;此外,在研究XCC桩贯入问题时,主要分析的是沉桩挤土效应,而忽略了实际工程施工中挤土位移荷载会对邻近既有桩产生附加桩身响应这一关键问题。为此,利用耦合的欧拉-拉格朗日(CEL)大变形数值技术,建立了相邻贯入XCC桩-砂土-既有XCC桩的整体CEL有限元数值模型,并且将数值结果与室内模型试验测量数据进行比较,验证了CEL数值技术在分析相邻XCC桩-土体-既有XCC桩相互作用的可行性和有效性。然后,开展了一系列参数研究,探讨了贯入深度、相邻桩与既有桩的间距、既有桩桩头边界条件等因素对既有桩侧向响应的影响。最后,基于参数分析的结果,编制了一套可用于岩土工程师在设计初期阶段评估相邻XCC桩贯入引起的既有XCC桩最大侧向响应的设计图,以减轻桩基施工带来的相关风险。

关键词：路基工程 XCC桩 CEL大变形数值技术砂土侧向响应设计图

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大宝山含钨褐铁矿中钨的赋存状态与嵌布特征

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Transactions of Nonferrous Metals Society of China 2024年第4期34卷 1263-1274页

作者：唐鸿鹄刘丙建王翠张雄星韩海生王丽曹杨孙伟中南大学资源加工与生物工程学院长沙410083 中南大学湖南省关键金属矿产资源高效清洁利用国际联合研究中心长沙410083

通过多种分析方法,探究广东大宝山含钨褐铁矿的物相组成、元素分布等工艺矿物学特征,以揭示矿石中关键金属钨的赋存状态与嵌布特征。X射线荧光分析(XRF)、粉末X射线衍射(XRD)以及扫描电子显微镜和能谱(SEM-EDS)结果表明:矿石中主要矿物... 详细信息

通过多种分析方法,探究广东大宝山含钨褐铁矿的物相组成、元素分布等工艺矿物学特征,以揭示矿石中关键金属钨的赋存状态与嵌布特征。X射线荧光分析(XRF)、粉末X射线衍射(XRD)以及扫描电子显微镜和能谱(SEM-EDS)结果表明:矿石中主要矿物为含钨褐铁矿和石英,关键金属钨品位为1.35%。微区X射线衍射(Micro-XRD)和矿物解离度分析仪(MLA)结果表明:钨主要赋存于高铁钨华((W,Fe)(O,OH)_(3))中,而高铁钨华则以剥离和带状形式紧密分布在褐铁矿中。同时,还定量分析了有价元素在各主要矿物中的赋存和分布情况,并讨论了含钨褐铁矿风化演变和形成机制。最终提出了一种选冶联合分选回收流程,为高效回收含钨褐铁矿中关键金属钨提供理论基础。

关键词：含钨褐铁矿赋存状态微区X射线衍射

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