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基于OpenMC制作轻水堆中子少群截面用于OpenMOC计算

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现代应用物理 2024年第2期15卷 61-69页

作者：周峰杨永伟吴翔房鹏王慧巧杨磊先进能源科学与技术广东省实验室广东惠州516000 中国科学院近代物理研究所兰州730000 中国科学院大学核科学技术学院北京100049

为了给确定论特征线程序OpenMOC提供高精度轻水堆少群截面库,研究了蒙特卡罗程序OpenMC的输出计数文件,开发了计数转换截面代码CSC,可以将OpenMC计数文件中的中子注量和各反应类型的反应率(单位体积内反应数占总反应数比率)计数进行处... 详细信息

为了给确定论特征线程序OpenMOC提供高精度轻水堆少群截面库,研究了蒙特卡罗程序OpenMC的输出计数文件,开发了计数转换截面代码CSC,可以将OpenMC计数文件中的中子注量和各反应类型的反应率(单位体积内反应数占总反应数比率)计数进行处理得到中子少群截面。采用这种截面制作方式,制作了不同输运修正方式和不同精细程度能群的少群截面库,提供给OpenMOC计算。分析了轻水堆燃料组件和基准题结果,得到了截面库制作精度较高的方式。采用内散射近似和CASMO-40群制作了中子少群截面库,以OpenMC的计算结果为参考解,对C5G7基准题的结果做了对比。结果表明,k_(eff)偏差为322.5×10^(-5),燃料棒功率相对偏差均小于2%,组件功率相对偏差均小于1%,通过这种方式制作的轻水堆截面库精度良好。

关键词： OpenMC OpenMOC 中子少群截面计数转截面代码CSC 输运修正能群结构 C5G7基准题

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基于威布尔的R2R系统维护决策研究

机电工程技术 2019年第12期48卷 98-102页

作者：姚可星周慧巧李伟杰邓耀华广东工业大学机电工程学院

针对柔性材料卷对卷(Roll to Roll, R2R)系统过度使用或过度维修的问题,结合柔性材料R2R系统不同性能退化阶段的特点,以最大可用度为决策目标构建了威布尔比例故障率模型,并以此制定柔性材料R2R系统维修策略。将上述维护决策模型应用到... 详细信息

针对柔性材料卷对卷(Roll to Roll, R2R)系统过度使用或过度维修的问题,结合柔性材料R2R系统不同性能退化阶段的特点,以最大可用度为决策目标构建了威布尔比例故障率模型,并以此制定柔性材料R2R系统维修策略。将上述维护决策模型应用到实际的印刷车间R2R系统中,通过历史状态监测数据制定合理维修策略。结果表明,印刷车间放卷辊轴运行时长在50~72天期间,决策指数趋近于最佳维护决策曲线;运行时长72天之后,决策指数大幅度上升,逐渐进入中期退化状态,建议采取适当的预防性维修措施。

关键词：威布尔维护决策 PCA特征提取 R2R系统

Space-confined vapor deposition synthesis of two dimensional materials

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Nano Research 2018年第6期11卷 2909-2931页

作者： Shasha zhou Lin Gan Deli Wang huiqiao Li Tianyou Zhai School of Materials Science and Engineering School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China

Two dimensional （2D） nanomaterials are promising fundamental building blocks for use in the next-generation semiconductor industry due to their unique geometry and excellent （opto）-electronic properties. However, large scale high quality fabrication of 2D nanomaterials remains challenging. Thus, the development of controllable fabrication methods for 2D materials is essential for their future practical application. In this review, we will discuss the importance of the space-confined vapor deposition strategy in the controllable fabrication of 2D materials and summarize recent progress in the utilization of this strategy for the synthesis of novel materials or structures. Using this method, various high quality ultrathin 2D materials, including large-area graphene and boron nitride, ReS2/ReSe2 HfS2, pyramid-structured multilayer MoS2, and the topological insulators BiaSe3 and BiaTe3, have been successfully obtained. Additionally, by utilizing van der Waals epitaxy growth substrates such as mica or other 2D materials, patterned growth of 2D nanomaterials can be easily achieved via a surface-induced growth mechanism. Finally, we provide a short prospect for future development of this strategy.

关键词： two dimensional vapor deposition space confinement transition metaldichalcogenides

Geometry dependent photoconductivity of In2S3 kinks synthesized by kinetically controlled thermal deposition

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Nano Research 2016年第12期9卷 3848-3857页

作者： Xing Xiong QiZhang Lin Gan Xing zhou Xiaonan Xing huiqiao Li Tianyou Zhai State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology (HUST) Wuhan 430074 China

High quality In2S3 kinks were synthesized via a kinetically controlled thermal deposition process and their optoelectronic characteristics were systematically explored. The growth mechanism was attributed to the combination of kinetic dynamic, crystal fadal energy, and surface roughness. Two trap induced emission bands were evidenced via a low temperature cathodoluminescence （CL） study. Furthermore, the nanowire junctions demonstrated a degenerative photodetection performance, as compared to the straight arms, attributed to a stress-induced extra series resistance measured from the kinked area. The well-controllable shape of the inorganic nanostructures and the detailed exploration of their optoelectronic properties are particularly valuable for their further practical applications.

关键词： geometry dependence photodetection In2S3 kinks thermal deposition

Approaching ohmic contact to two-dimensional semiconductors

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Science Bulletin 2019年第19期64卷 1426-1435页

作者： Kailang Liu Peng Luo Wei Han Sanjun Yang Shasha zhou huiqiao Li Tianyou Zhai State Key Laboratory of Material Processing and Die & Mould Technology School of Material Sciences and Engineering Huazhong University of Science and Technology

Two-dimensional semiconductors have attracted immense research interests owing to their intriguing properties and promising applications in electronic and optoelectronic ***,the performance of these devices is drastically hindered by the large Schottky barrier at the electric contact interface,which is hardly tunable due to the Fermi level pinning *** this review,we will analyze the root causes of the contact problems for the two-dimensional semiconductor devices and summarize the strategies on the basis of different contact geometries,aiming to lift out the Fermi level pinning effect and achieve the ohmic ***,the remarkable improvement of the device performance thanks to these optimized contacts will be *** the end,the merits and limitations of these strategies will be discussed as well,which potentially gives a guideline for handling the electric contact issues in two-dimensional semiconductors devices.

关键词： Two-dimensional semiconductor Ohmic contact Fermi level pinning Schottky barrier

Ypel5 regulates liver development and function in zebrafish

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Journal of Molecular Cell Biology 2023年第3期15卷 44-54页

作者： Yun Deng Xiao Han huiqiao Chen Chaoxian Zhao Yi Chen Jun zhou Hugues de The Jun Zhu Hao Yuan Shanghai Institute of Hematology State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiRuĳin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China CNRS-LIA Hematology and Cancer Sino-French Research Center for Life Sciences and GenomicsRuĳin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Department of Hematology Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310011China Universitéde Paris 7/INSERM/CNRS UMR 944/7212 Equipe Labellisée Ligue Nationale Contre le CancerHôpital St.LouisParis 75010France

YPEL5 is a member of the Yippee-like(YPEL)gene family that is evolutionarily conserved in eukaryotic *** date,the physiological function of YPEL5 has not been assessed due to a paucity of genetic animal ***,using CRISPR/Cas9-mediated genome editing,we generated a stable ypel5^(−/−)mutant zebrafish *** of ypel5 expression leads to liver enlargement associated with hepatic cell ***,hepatic metabolism and function are dysregulated in ypel5^(−/−)mutant zebrafish,as revealed by metabolomic and transcriptomic ***,Hnf4a is identified as a crucial downstream mediator that is positively regulated by *** hnf4a overexpression could largely rescue ypel5 deficiencyinduced hepatic ***,PPARαsignaling mediates the regulation of Hnf4a by Ypel5 through directly binding to the transcriptional enhancer of the Hnf4a ***,this work demonstrates an essential role of Ypel5 in hepatocyte proliferation and function and provides the first in vivo evidence for a physiological role of the ypel5 gene in vertebrates.

关键词： YPEL5 hepatomegaly hepatic function HNF4A PPARαsignaling

血液肿瘤患者PICC置入部位医用粘胶相关性皮肤损伤的多因素分析

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中国实用护理杂志 2017年第5期33卷 335-340页

作者：赵慧函黄惠桥韦琴周雪梅凌瑛李高叶应燕萍广西医科大学第一附属医院护理部南宁530021 广西医科大学第一附属医院血液内科南宁530021 广西医科大学第一附属医院肿瘤内科南宁530021

目的了解血液肿瘤患者PICC置入部位医用粘胶相关性皮肤损伤（MARSI）的流行情况并分析其相关因素.方法持续2周的横断面观察性研究在广西医科大学第一附属医院血液内科开展,同一研究者在PICC维护过程采集局部皮肤信息及皮肤图片,其他... 详细信息

目的了解血液肿瘤患者PICC置入部位医用粘胶相关性皮肤损伤（MARSI）的流行情况并分析其相关因素.方法持续2周的横断面观察性研究在广西医科大学第一附属医院血液内科开展,同一研究者在PICC维护过程采集局部皮肤信息及皮肤图片,其他相关信息通过电子病历系统收集.皮肤科医生及PICC专科护士共同对皮肤损伤进行分类.统计MARSI的流行情况,同时分析其相关因素,明确独立危险因素.结果总共纳入153例研究对象.MARSI的总发生率为33.99%（52/153）,分别包括：机械性皮肤损伤22.87%（35/153）、接触性皮炎（CD）9.80%（15/153）、潮湿相关性皮肤损伤0.65%（1/153）、毛囊炎0.65%（1/153）.多因素分析发现年龄≥50岁（P=0.016,OR=5.919,95%CI 1.389~25.220）、非PICC专科护士维护（P=0.013,OR=8.333,95%CI 1.566~44.360）为机械性皮肤损伤的独立危险因素.皮肤过敏史（P=0.000,OR=12.333,95%CI 3.669~41.454）、经PICC输注三氧化二砷（P=0.003,OR=4.565,95%CI 1.661~12.547）为CD的独立危险因素.结论血液肿瘤患者PICC置入部位MARSI发生率较高,本研究分析了流行病学数据及独立危险因素,为此领域今后的研究提供了基础.

关键词：血液肿瘤导管插入术中心静脉流行病学因素分析统计学皮肤损伤

Modulation of the Anisotropic Electronic Properties in ReS_(2) via Ferroelectric Film

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CCS Chemistry 2019年第3期1卷 268-277页

作者： Renyan Wang Fengya zhou Liang Lv Shasha zhou Yiwei Yu Fuwei Zhuge huiqiao Li Lin Gan Tianyou Zhai State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Shenzhen R&D Center Huazhong University of Science and TechnologyShenzhen 518000China

Anisotropic response in two-dimensional materials has emerged with attractive potential applications in angle-sensitive ***,the challenge with current studies on anisotropic response is due to the main use of the structural materials of pristine to examine the physical properties in different direc-tions,which cause restriction of the anisotropic ratio within a narrow range,thereby,limiting their practical applications.

关键词： anisotropic ReS_(2) PVDF polarization ferroelectric

Fine mapping of the awn gene on chromosome 4 in rice by association and linkage analyses

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Chinese Science Bulletin 2011年第9期56卷 835-839页

作者： HU GuangLong ZHANG DongLing PAN huiqiao LI Ben WU JianTao zhou XueYa ZHANG QunYuan zhou Lei YAO GuoXin LI Junzhou LI JinJie ZHANG HongLiang LI ZiChao Key Laboratory of Crop Genomics and Genetic Improvement of Ministry ofAgriculture Beijing Key Laboratory of Crop Genetic Improvement College of Agronomy and Biotechnology China Agricultural University Beijing 100193 China Key Laboratory of Btomformattcs and Bioinformatics Division of Ministry of Education Tsinghua National Laboratory for Information Sciences and Technology Department of Automation Tsinghua University Beijing 100084 China Division of Statistical Genomics Washington University School of Medicine St Louis MO USA

Awnness is a key trait in rice domestication, yet no studies have been conducted on fine mapping or association mapping of the rice awn gene. In this study, we investigated the awnness and genotype of a core collection of 303 cultivated rice varieties and a BC5F2 segregating population of 200 individuals. Combining association and linkage analyses, we mapped the awnness related genes to chromosome 4. Primary association analysis using 24 SSR markers revealed five loci significantly associated with awnness on chromosome 4. The associated markers cover previously identified regions. Fine association mapping was conducted using another 29 markers within a 4-Mb region, covering the associated marker in34, which is close to the awn gene Awn4.1. Seven associated markers were revealed, distributed over an 870-kb region. Combining the fine association mapping and linkage analysis of awnness in the 200 BC5F2 segregating population, we finally identified a 330-kb region as the candidate region for Awn4.1. The results indicate that combining association mapping and linkage mapping provides an efficient and precise approach to both genome-wide mapping and fine mapping of rice genes.

关键词： 4号染色体水稻品种连锁分析精细定位基因图谱协会 SSR标记分离群体