论国有外贸企业的资本经营

随着国内外经济环境的变化我国宏观经济政策将在继续搞好总量控制的同时切实将工 作重点转到调整和优化经济结构上来经济结构调整将是一项全局性的任务与外经贸发展 有着密切关系一方面我国经济结构调整的艰巨任务给外经贸工作提出了更高的要求 迫切需要外经贸领域加快实行两个根本性转变提高发展水平和质量走上以经济效益为中 心的发展轨道从而为经济结构调整作出更大的贡献另一方面外经贸领域也要按照经济结 构调整的总体部署和要求加快自身结构调整和优化的步伐从而对国民经济总体经济结构 调整发挥重要促进作用因此外经贸工作在国民经济结构调整过程中将肩负着双重任务 一是作为国民经济的功能性部门通过提高自身发展水平...学位：经济学硕士院系专业：经济学院国际贸易系_国际贸易学学号：19951300

Proteomic Analysis of Rice Cultivar Jiafuzhan in the Responses to Xanthomonas campestris pv.oryzicola Infection

作者简介: 陈芳育(1978-) , 男, 讲师。E-mail : cfy307@ sohu. com * 通讯作者(Corresponding author) : 陈亮( 1963-) , 男, 教授, 博士生导师, 研究方向: 细胞与分子生物学。E-mail: chenlg@ xmu. edu. cn[中文文摘]运用双向电泳分析高抗水稻品种“佳辐占”受强毒力细菌性条斑病病原菌侵染2d后的叶片蛋白质组变化,共发现38个蛋白质发生差异表达,其中32个上调,5个下调,1个新增。用MALDI-TOF-MS分析和数据库检索鉴定出其中的33个差异表达蛋白质,并将它们分为4个功能类群,即信号转导相关蛋白、防卫相关蛋白、代谢相关蛋白和蛋白质稳定相关蛋白。这些蛋白分别参与了信号识别、信号传递、抗氧化、糖代谢、细胞壁加固、植保素合成等抗病生理反应。研究表明,水稻对细菌性条斑病病原菌的侵染存在着一个复杂的抗病信号应答和代谢调控网络,其作用机理可以通过差异表达的蛋白质(酶)反映出来,其中差异表达的8个R蛋白和3个PR蛋白可能与水稻对细菌性条斑病的抗病性密切相关。本研究为进一步揭示水稻对细菌性条斑病的抗性机理及相关抗病基因的功能克隆提供了依据。[英文文摘]Rice bacterial leaf streak( BLS) caused by the pathogen Xanthomonas oryzae pv. oryzicola ( Xooc) is one of the major rice diseases in South China. Here we focus on proteomics as a tool for the discovery of differentially expressed proteins closely related to the disease resistance. The leaves of rice cultivar Jiafuzhan (Oryzae sativa L. ) highly resistant to the disease, were infected by"89773-1- 1" strain of the Xooc with strong pathogenicity. Total proteins were extracted from the leaves sampled at two days after inoculation, and separated by two- dimensional electrophoresis. It was found that there were thirty- eight proteins expressed differentially, of which thirty-two were up-regulated, five down-regulated and one was "new". Of the thirty- eight responsive proteins, thirty-three were identified by MALD-I TOF-MS and database searching.Based on the predicted function, we grouped them into four clusters: signal transduction, defensive responses, substance metabolism and protein stabilization, which were involved in many resistant physiological react ions, including signal recognition and transduction, antioxidant react ion, carbonhydrate metabolism, cel-l wall reinforcement and phytoalexin biosythesis. In turn a complex signal transduct ion and metabolic regulative network in the resistant responses to the infection of Xooc was outlined in this work, and the molecular mechanism was revealed by differentially expressed protein/enzyme patterns during Xooc infection. In this study, eight R proteins and three pathogenesis- related(PR) proteins which might relate closely to the disease-resistance were found. This result provides us the basic information to further reveal the resistant mechanism and conduct functional cloning of the resistan-t related genes in rice to BLS.生物农药与化学生物学教育部重点实验室( 福建农林大学) 开放课题基金项目( KF0411

民事担保制度比较研究

民事担保制度是民法的重要组成部分，世界各国民法规范无 不对其作了详尽的规定。商品经济的发展极大地丰富了民事担保 制度的内容，也为民法科学带来了许多值得探讨的问题。198 7年1月1日开始施行的我国《民法通则》标志着我国立法对民 事（债务）担保制度的确认，然而《民法通则》中关于担保制度 的规定是极为原则的，远远满足不了实际需要，一方面对应有的 某些规未作出规定，同时对已有的规定尚未达到明确与规范化， 这一立法状况不仅落后于世界各国民事立法的总体状况，也落后 于我国现实经济关系发展的实际需要，因此，本文拟以民事担保 制度为课题。鉴于有关担保制度在我国民法理论和实践中还很薄 弱，...学位：法学硕士院系专业：法学院法律系_民商法学(含劳动法学、社会保障法学)学号：xy00026

The radula research of 13 Thais species in China coast

利用扫描电镜对13种荔枝螺属种类的齿舌形态进行观察,发现本属齿舌式均为0:1:1:1:0。齿舌中央齿尖锐突出与本属物种均为肉食性相符。各物种齿舌中央齿基部均较宽,具1枚中央齿中间齿,2枚中央齿侧齿。中央齿上布满侧生小齿,大部分为中央齿侧齿内小齿和侧齿外小齿,同种不同个体的小齿形态、数目存在差异,侧生小齿具有不对称性和可变性,因此在对本属种类分类时中央齿小齿仅可作为部分参考依据。本属种类的中央齿缘齿有较大的区别,红豆荔枝螺和刺荔枝螺不具中央齿缘齿,其余11种具有明显的中央齿缘齿,因此齿舌的分叉类型也分两种,红豆荔枝螺和刺荔枝螺为较原始不具中央齿缘齿的三分叉型,其余11种为两端分叉型。通过齿舌形态的分析,结合比较外部形态和分子系统发育,认为红豆荔枝螺和刺荔枝螺与其余11种之间已达到属间关系,建议将红豆荔枝螺和刺荔枝螺归为红螺亚科的MAnCInEllA属。We observed the radula of 13 Thais species by scanning electron microscopy.The results showed that the radula form of Thais is 0︰1︰1︰1︰0.Radula prominent and sharp consistent with the species are carnivorous.All species have a wide-based central tooth which has a central cusp, two lateral cusp.All species have two lateral teeth which are like slender curved sickle.The central teeth are covered with denticle, which are asymmetric and plastic, with different number and shape in the same species.Most of them are inner denticle on lateral cusp and outer denticle on lateral cusp.Therefore, they can be used as part of the basis in the classification of Thais genus.Marginal cusps are different in all species.All species have two marginal cusp except T.mancinella and T.echinata,The radula of T.mancinella and T.echinata are Three-pronged model, the rest of the species are both ends of bifurcation model.Comprehensive comparison of the radula, shell morphology and molecular phylogeny inferred that evolutionary relationship of the species of T.mancinella, T.echinata and other 11 species beyond the genus classification definitions.We suggest classify T.mancinella and T.echinata into Mancinella gunes.This research provides materials for taxonomy of Thais and Muricidae in China coasts.海洋局公益性项目(201205024-2); 国家贝类产业技术体系项目(CARS-48