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Journal of Integrative Plant Biology 2009年第8期51卷 774-781页

作者： Yinlian shi sha Zhao Jialing Yao College of Life Science and Technology Huazhong Agricultural University Wuhan 430070 China

Photoperiod-sensitive genic male-sterile （PSGMS） rice （Oryza sativa L.）, a natural mutant found in the rice cultivar Nongken 58, is very useful for the development of hybrid rice cultivars. Despite its widespread use in breeding programs, the initial stage of the abortive development of PSGMS rice and the possible cytological mechanisms of pollen abortion have not been determined. In the present study, a systematic cytological comparison of the anther development of PSGMS rice with its normal fertile counterpart is conducted. The results show that pollen abortion in PSGMS rice first occurs before the pollen mother cell （PMC） stage, and continues during the entire process of pollen development until pollen degradation. The abortive process was closely associated with the abnormal behavior of the tapetum. Although tapetum degeneration in PSGMS rice initiates already at the PMC stage, it proceeds slowly and does not complete until the breakdown of the pollen. Such cytological observations were supported by the results of the TUNEL （TdT-mediated dUTP Nick End Labeling） assay, which detects DNA fragmentation resulting from programmed cell death （PCD）, indicating that the premature tapetum degeneration is in the process of PCD.

关键词： male-sterility Oryza sativa programmed cell death tapetum ultrastructure

On the parity-check matrix of generalized concatenated code

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Science China(Information Sciences) 2020年第4期63卷 233-235页

作者： sha shi Yang LIU Junzhi YAN Jingliang GAO Yunjiang WANG Engineering Research Center of Molecular and Neuro Imaging Ministry of Education School of Life Science and Technology Xidian University National Computer Network Emergency Response Technical Team/Coordination Center of China China Mobile Research Institute State Key Laboratory of Integrated Services Networks Xidian University

Dear editor,Single-level concatenation using a nonbinary code as outer code and a binary code as inner code is widely used in communication and digital data storage systems to achieve high reliability with reduced decoding complexity [1]. Moreover, concatenation can be multilevel, where multiple outer codes are concatenated with multiple inner codes

关键词： On the parity-check matrix of generalized concatenated code

Synthesis and Photoluminescence Enhancement of Silver Nanoparticles Decorated Porous Anodic Alumina

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Journal of Materials Science & Technology 2011年第2期27卷 165-169页

作者： Song Ye Yidong Hou Renyi Zhu Shulong Gu Jingquan Wang Zhiyou Zhang sha shi Jinglei Du School of Physical Science and Technology Sichuan UniversityChengdu 610064China Department of Physics and Electronic Science Chaohu CollegeChaohu 238000China

Silver nanoparticles（Ag NPs） were successfully assembled in porous anodic alumina（AAO） templates via a green silver mirror *** Ag NPs/AAO composite templates then were characterized by field emission scanning electron microscopy（FESEM）,energy-dispersive X-ray microanalysis（EDX）,and X-ray diffraction（XRD）.Furthermore,the photoluminescence（PL） properties were also *** with the blank AAO,the PL intensity of Ag NPs/AAO templates are enhanced and the maximum enhancement is 2.58 *** on the local electric field enhancement effect,the theoretical values were also deduced,which are basically coincident with the experimental.

关键词： Nanocomposite Photoluminescence enhancement Local electric field enhancement

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金融衍生品与全球资本竞争

证券市场导报 2019年第2期 4-7,24页

作者：沙石中国金融期货交易所上海200122

从经济的视角看,当代主要国家之间的竞争形式已经从全球资源和市场的竞争,升级为全球资本的竞争。国际资本带来产业进步、科技创新,带来市场和就业,对一国经济的贡献是传统大国竞争方式无法比拟的。现代金融衍生品是在资本跨国竞争中诞... 详细信息

从经济的视角看,当代主要国家之间的竞争形式已经从全球资源和市场的竞争,升级为全球资本的竞争。国际资本带来产业进步、科技创新,带来市场和就业,对一国经济的贡献是传统大国竞争方式无法比拟的。现代金融衍生品是在资本跨国竞争中诞生的,对西方大国资本市场的规模成长、效率提升和科技创新发挥了巨大的推动作用。目前我国金融衍生品市场发展水平与中国的经济大国地位和进一步市场开放的大局极不相称。本文阐述了金融衍生品在扩大我国资本市场对外开放、助推人民币国际化、保障金融安全、强化我国全球资本竞争地位等方面的必要性和重要意义。随着我国"五位一体"的衍生品监管体系的完善和风险管控能力的提高,加快金融衍生品市场发展和国际化步伐应该早日提上议事日程。

关键词：资本竞争金融衍生品人民币国际化金融安全

Spread of Staphylococcus aureus between medical staff and high-frequency contact surfaces in a large metropolitan hospital

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International Journal of Nursing Sciences 2015年第4期2卷 366-370页

作者： Li-sha shi Chun-juan Xu Hong-bing Jia Wei Chen Xiao-feng Zhou Xiu-hua Li School of Nursing Capital Medical UniversityBeijingChina China-Japan Friendship Hospital BeijingChina School of Nursing Beijing University of Chinese MedicineBeijingChina Chinese Nursing Association BeijingChina

Objective:To examine whether bacteria are transferred between the hands of medical staff and high-frequency contact surfaces within and between departments of a major metropolitan hospital,and to further analyze the patterns of ***:Microbiological samples were collected from the hands of 112 hospital employees as well as from 120 high-frequency contact surfaces in four hospital *** were collected on agar plates,analyzed for the presence of Staphylococcus aureus or methicillin-resistant ***(MRSA)by standard microbiology testing,and partially genotyped using pulsed-field gel ***:Genetically identical MRSA was identified on the surface of an electrocardiography device in the medical intensive care unit and on the same type of device in the neurosurgical *** similar *** was identified on an infusion pump in the medical intensive care unit and on the hands of several doctors in a different department who regularly use that *** identical *** was also identified on bedside rail restraint in the medical intensive care unit and on the hands of the nurse in the neurosurgical ***,genetically similar MRSA was identified both on the surface of an electrocardiography device and on the suction apparatus in the medical intensive care ***:Cross-contamination of *** or MRSA on medical workers'hands and contact surfaces was demonstrated within and between departments of a large metropolitan *** are needed in medical staff hygiene habits and in the cleaning of highfrequency contact surfaces to help prevent and control nosocomial infections.

关键词： Pathogenic bacteria Hand contamination Medical staff Nosocomial infection Cross-contamination

Depositional environment in the southern Ulleung Basin,East Sea(Sea of Japan),during the last 48000 years

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Acta Oceanologica Sinica 2010年第5期29卷 52-64页

作者： LIU Yanguang sha Longbin shi Xuefa SUK Bong-Chool LI Chaoxin WANG Kunshan LI Xiaoyan Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Department of Geography East China Normal University Shanghai 200062 China South Sea Research Institute Korea Ocean Research and Development Institute （KORDI） Geoje 656-830 Korea

The present study is based on the sedimentological data from a piston core KCES1 off the southern Ulleung Basin margin,the East Sea（Sea of Japan）.The data include sediment color（L^＊）,X-ray radiographs,grain size distribution and AMS^14C *** kinds of sediments（homogeneous,laminated,crudely laminated and hybrid sediments） are identified according to the characters of the sedimentary structures that were considered to reflect changes in bottom-water *** of dark laminated/crudely laminated sediments and light homogeneous sediments represent millennial-scale variations that are possibly associated with the high-resolution changes in the East Asian monsoon（EAM）.The relative contributions of the East China Sea Coastal Water（ECSCW） and the Tsushima Warm Current（TWC） were likely the main reasons for the repetition of the anoxic and oxic depositional conditions in the East Sea since the last 48 ka *** the interstadial,the strengthen summer EAM was attributed to the expansion of the ECSCW because of more humid climate in central Asia,and then more strongly low-salinity,nutrient-enriched water was introduced into the East *** ventilation of deep water was restricted and therefore the dark laminated layer deposited under the anoxic bottom water *** the lowest stand of sea level in the last glacial maximum（LGM）,the isolated East Sea dominated by stratified water masses and the euxinic depositional environment *** homogenous sediments have been predominating since 17.5 ka BP indicating that the TWC has intruded into the East Sea gradually with the stepwise rise of sea level and the bottom water oxygen level was *** the late Younger Dryas（YD） period,the last dark laminated layer deposited because the ventilation of bottom water was restricted by stronger summer *** TWC strengthened and the bottom water became oxic again from 10.5 ka BP.

关键词： East Sea depositional environment East Asian monsoon Tsushima Warm Current

Design and Simulation of a Electrorheological(ER) Control High Voltage Power Supply

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International Journal of Plant Engineering and Management 2009年第3期14卷 142-146页

作者： ZHU shi-sha HUANG He-qing BAI Quan Institute of Mechanical Engineering Xiangtan University Xiangtan 411105 P. R. China

Few applications with electrorheological （ER） fluids have been found in industry. One reason is high voltage power supplies cannot meet the requirement for ER effect. In this paper, an ER control high voltage power supply for engineering application was designed which reduced power wastage by adopting soft switch technology; lessened its volume to satisfy micromation when adopting the planar transformer and improved its response character- istic by choosing an assistant discharging circuit. Simultaneously, a simulation analysis has been carried out. As results, the output voltage of this high voltage power supply is 5 kV, and the voltage can be continuously regulated and the voltage ripple is only 0. 7 %, so the requirement of stability is also achieved.

关键词： ER control high voltage power supply application design soft switch technology simulation

Material Design and Experimental Analysis of a New Type of Semiconductor ER Fluids

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Journal of Beijing Institute of Technology 2000年第2期9卷 155-159页

作者：朱石沙魏宸官北京理工大学车辆工程学院北京100081

To improve the electrorheological effect of electrorheological fluid (ERF), a new type of the electrosensitive particle material, polynaphthalene quinone was prepared, whose molecules contain blended atoms of nitrogen, oxygen, sulphur and big π bond conjugate system. In both DC and AC electric fields, the ERF material showed a distinct ER effect. Especially, in the alternating electric field, the shear stress of this material versus AC voltage has a better quadratic relation than that of the other materials. The experimental data showed that organic semiconductor polymers with big π bond conjugate system are a new type of electrosensitive particle materials which are worth well developing.

关键词： electrorheological fluid(ERF) alternating electric field regression analysis

银团贷款方式的参与行数量博弈分析——基于大型基础设施BOT项目的研究

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湖南师范大学社会科学学报 2008年第5期37卷 104-107页

作者：石莎莎史安娜张鑫河海大学商学院江苏南京210098

银团贷款能满足大型基础设施BOT项目的资金需求,但银团中"参与行的数量"不能有效确定,就会引起项目融资前期借贷双方的低效率,影响融资活动的顺利进行。我们试图运用混合策略博弈方法建立相应的模型,将被"参与行数量"所影响的各决策变... 详细信息

银团贷款能满足大型基础设施BOT项目的资金需求,但银团中"参与行的数量"不能有效确定,就会引起项目融资前期借贷双方的低效率,影响融资活动的顺利进行。我们试图运用混合策略博弈方法建立相应的模型,将被"参与行数量"所影响的各决策变量置于该博弈框架下运行分析,由此找出均衡数量并提出相应的对策建议。

关键词：基础设施BOT项目银团贷款参与行数量混合策略博弈

内蒙古锦鸡儿属植物叶片矿质元素的电感耦合等离子体质谱分析

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光谱学与光谱分析 2018年第4期38卷 1240-1244页

作者：惠岑怿冯金朝石莎中央民族大学生命与环境科学学院北京100081

基于内蒙古典型草原相同生境条件,以柠条锦鸡儿、小叶锦鸡儿和狭叶锦鸡儿为灌木类植物的代表,研究锦鸡儿属植物叶片中11种矿质元素含量特征及离子平衡对植物适应环境尤其是逆境的响应。应用在线内标加入和碰撞/反应池(ORS)技术消除质谱... 详细信息

基于内蒙古典型草原相同生境条件,以柠条锦鸡儿、小叶锦鸡儿和狭叶锦鸡儿为灌木类植物的代表,研究锦鸡儿属植物叶片中11种矿质元素含量特征及离子平衡对植物适应环境尤其是逆境的响应。应用在线内标加入和碰撞/反应池(ORS)技术消除质谱干扰,以电感耦合等离子体质谱法(ICP-MS)快速、同时测定植物叶片中K,Ca,Mg,P,Mn,B,Na,Zn,Cu,Ni和Mo等多种矿质元素含量。以硝酸和双氧水为消解酸,微波仪消解样品,选择相应同位素,以3.5mL·min^(-1)为He流速;K,Na,Ca,Mg和P元素检出限为0.62~2.90μg·L^(-1);Cu,Zn,Mn,Ni,Mo和B元素检出限为0.01~0.12μg·L^(-1);样品加标回收率在82.0%~117.2%,相对标准偏差在1.12%~3.68%之间,具有较高的准确度和精密度。该方法实现对灌木类植物样品中大量元素和微量元素进行同时、快速及批量分析,结果显示三种锦鸡儿属植物叶片矿质元素含量大小顺序均为K>Mg>P>Ca,K^+作为抗旱性机制中重要的渗透调节物质,含量最高,均值达到1.27%;狭叶锦鸡儿叶片Mn,Cu和Zn元素含量高于柠条锦鸡儿和小叶锦鸡儿,后两者一致;叶片11种矿质离子平衡总量以柠条锦鸡儿最大(40 089.32μg·g^(-1)),明显高于狭叶锦鸡儿和小叶锦鸡儿。该研究通过对锦鸡儿属植物叶片多种矿质元素进行快速、同时测定并分析逆境适应下多种矿质元素含量特征,初步探讨植物叶片矿质离子平衡对植物抗性的响应。

关键词：电感耦合等离子体质谱锦鸡儿属矿质元素八级杆碰撞/反应池系统