Experimental Determination and Thermodynamic Calculation of Phase Equilibria in the Fe-Co-(Nb, Zr) Systems

Fe-Co基合金由于其具有优异的软磁性能，良好的抗氧化和抗腐蚀性能及优异的综合力学性能和良好的生理相容性，广泛用于制造软磁材料、高温合金，在化学化工、能源、航空、医疗等方面占据着重要地位。相图计算在金属材料成分设计中有重大应用，因此，有必要掌握相图和热力学信息。本论文通过实验测定和热力学计算两种途径研究了Co-Zr二元系、Fe-Co-Zr和Fe-Co-Nb三元系在不同温度时全成分范围内的相平衡，主要研究工作如下： (1)实验测定了Co-Zr二元系在500℃到1350℃之间全成分范围内的相平衡，对已报道的Co-Zr二元系的实验信息进行了修正和补充。 (2)首次实验测定了Fe-Co-Zr三元系...Fe-Co base alloys are widely used as soft magnetic materials and ultrahigh-temperature alloys in the filed of chemistry and chemical engineering, energy, aviation and medical due to their good soft magnetism, good anti-oxidatin and corronsion resistance, excellent mechanical properties and good biological compatibility. Because the CALPHAD technology has the important application in the designing ...学位：工学硕士院系专业：化学化工学院材料科学与工程系_材料物理与化学学号：2072006115207

“CALIS重点学科网络资源导航库”标准与规范述评

“十五”期间,共54家高校图书馆参与“CALIS重点学科网络资源导航库”项目的导航资源建设工作。为保证信息发现、资源描述等行为的一致性和连续性,项目组制订了相关标准与规范。该文对项目所涉及的标准和规范的建设情况进行了述评、探讨,包括资源选择标准、元数据规范、著录规则和资源类型设定、分类体系的选择等

学术图书馆学科导航门户资源类型表的设定

在对DC和ROADS以及SOSIG、INFOMINE和CSDL等大型学科导航门户对资源类型设定的调研基础上,提出了区分和设定资源类型的原则,并根据该原则设定了适合于CALIS学科导航门户建设的资源类型表

Transformed Rice with Salt Tolerance-related Genes of Bruguiera sexangula by Agrobacterium Meditation

运用农杆菌介导法将红树林耐盐相关基因mangrin转入粳稻品种‘日本晴’中,通过GUS基因检测愈伤组织转化率,确定农杆菌菌液浓度OD600为0.5,浸染时间30min,共培养时间3d为最佳转化体系;经潮霉菌筛选,获得抗性再生植株。通过PCR扩增检测、Southern blot分析和GUS基因活性检测,结果表明,mangrin基因整合到再生水稻的染色体DNA上。耐盐性测定结果表明,转基因植株在200mmol/L NaCl胁迫下,成活率保持在83.3%,株高增长20%~40%,mangrin基因能提高转基因水稻对盐胁迫的抗性。Salt tolerance-related genes in Bruguiera sexangula were transformed into Oryza sativa subsp.japonica cv.Nipponbare,a keng-rice variety.The optimal system of the transformation was found by detecting the callus-transformation rate with GUS gene to be the one with the agro-bacterium concentration set at OD_ 600 0.5,the infection time set at 30 minutes and the culture time set at 3 days and then the regeneration plantlets were obtained by Hyg screening.mangrin gene was integrated in the DNA of the regeneration plantlets by PCR amplification,Southern blotting and GUS gene activity detection.The testing of the salt tolerance indicated that under the stress resulting from 200 mmol/L NaCl the transgenic plants maintained a survival rate of 83.3% and increased their heights by 20%~40% and thus mangrin gene could raise the resistance of the transformed rice to salt stress.中国科学院知识创新工程重要方向项目(KZCX3-SW-444);; 教育部重点项目(01102

应用微乳法制备二氧化硅包裹钯纳米粒子

以氯钯酸为钯源 ,正硅酸乙酯 (TEOS)为硅源 ,利用十六烷基三甲基溴化铵 (CTAB) /正己醇 /水构成的微乳体系制备了二氧化硅包裹纳米金属Pd粒子 .其中Pd的粒径可在 5～ 3 0nm调变 ,外部SiO2 层的厚度可在 5～ 3 5nm调变 .详细考察了氯钯酸和正硅酸乙酯的浓度、微乳体系中水和正己醇的量等参数对制备的Pd/SiO2 粒子的大小及形态的影响

临床药师干预对提高辅助用药应用合理性的作用研究

目的分析临床药师干预对提高辅助用药应用合理性的作用。方法回顾分析2018年1-12月医院普外科、骨外科、内科、产科、妇科等所收治470例患者的辅助用药资料,由医院临床药师对于辅助用药资料进行专项点评以及巡查,分析临床药师干预对提高辅助用药应用合理性的作用。结果经研究统计发现,470例患者的辅助用药医嘱数量为864份,依据《新编药物学》的分类方法统计分析辅助用药情况发现:医院所应用范围最为广泛的药物包括肠内营养乳剂、脂肪乳(10%)氨基酸(15)葡萄糖(20%)注射液、脂肪乳氨基酸(17)葡萄糖(11%)注射液、多种微量元素注射液(Ⅱ)、脂溶性维生素注射液(Ⅱ)、注射用水溶性维生素、匹多莫德颗粒、奥拉西坦注射液、丹参川芎嗪注射液、参芎葡萄糖注射液、丹红注射液、参麦注射液、丹参注射液、依达拉奉注射液以及注射用鼠神经生长因子。依据数据统计发现,不合理用药的情况主要包括超说明书用法用量、适应证不适宜、联合用药不适宜、溶媒选择不适宜、用药疗程延长、药物配伍不当以及使用未注意用药禁忌证。经临床药师干预后,医院不合理用药情况均有所降低,有效提高了辅助用药的合理性。864份辅助用药数量分别来自普外科、骨外科、神经外科、内科、妇科、产科、儿科、新生儿科。结论在临床辅助用药中,对于辅助用药实施审核评价,应保持客观依据,通过对临床药师进行干预,可提高辅助用药应用合理性,有利于辅助用药风险性的降低

Separation of Sperm Cells of Rhododendron simsii

作者简介：张玉红(1988-)，女，山东乳山人，硕士研究生，从事植物学研究。E-mail: [email protected] 注：田惠桥为通讯作者。E-mail: [email protected]杜鹃成熟花粉为二胞型,含一个营养细胞和一个生殖细胞,其精细胞在花粉管中形成。应用半离体技术培养杜鹃已授粉花柱,使花粉管从花柱中长出,再用渗透压冲击法促使花粉管破裂,释放出一对与营养核相连的精细胞。分离的精细胞经FDA方法检测,证明具活性。用显微操作仪可收集数量较多的分离精细胞。[英文文摘]The mature pollen of Rhododendron simsii is bicellular, containing one vegetative cell and one germ cell, with the sperm cells forming in pollen tube. Semi vitro technique was used in style pollinated to make pollen tube sprout from style. Then the pollen tube burst by osmotic shock method and released a pair of sperm cells which connected to vegetative nucleus. The sperm cells separated kept activities proved by FDA method. A fairly large number of separated sperm cells could be collected by micromanipulator.国家自然科学基金(30970275、31170289);公益性行业(农业)科研专项课题(200903016)资

纳米Co_3O_4的制备及其在富氢气氛下CO选择氧化反应中的催化性能

过渡金属氧化物四氧化三钴(Co3O4)在CO氧化反应中展示了较好的低温活性.Co3O4催化剂用于富氢气氛下CO选择氧化反应已引起了人们极大的关注,具有潜在的应用前景.采用液相沉淀-热解氧化方法制备了2种不同形貌的纳米Co3O4.用X射线衍射(XRD)、扫描电子显微镜(SEM)等技术考察了包括沉淀剂种类、老化时间、焙烧温度等合成条件对生成Co3O4形貌、晶粒尺度的影响.制备的Co3O4的外形与沉淀前驱物外形直接相关.焙烧温度越高,Co3O4的颗粒越大.研究了制得的Co3O4在富氢气氛下CO选择氧化反应中的催化性能.对比以上方法制备的Co3O4的催化性能发现,催化剂的粒径和比表面积与催化剂的活性存在关联.使用尿素沉淀法并经250~300℃空气热解氧化制得的Co3O4具有较好的催化活性

Oxidant-Free Dehydrogenation of Alcohols over Hydrotalcite-Supported Palladium Catalysts

联系人: 王 野. Tel: (0592)2186156; Fax: (0592)2183047; E-mail: [email protected][中文文摘]研究了多种载体负载Pd催化剂上苯甲醇无氧脱氢反应.结果发现,以兼具较强酸性和碱性的水滑石(HT)为载体时,Pd催化剂具有优异的苯甲醇转化活性和苯甲醛选择性,当Pd含量为0.32%～0.55%时催化性能最佳.Pd/HT催化剂可重复使用,且对于含推电子取代基的芳香醇、2-噻吩甲醇、α,β-不饱和醇与环状脂肪醇等的直接脱氢反应均具有较好催化性能.HT表面的Pd(II)物种反应后转变为平均粒径为2.0～2.5nm的Pd纳米粒子或纳米簇.具有较高分散度的Pd(II)物种易转变为较小的Pd纳米粒子,从而具有较佳的催化性能.本文推测,催化剂表面的碱性位可促进苯甲醇O-H键的活化,形成Pd-苯甲氧基中间体,该中间体进一步脱氢生成苯甲醛和Pd-H物种;而催化剂表面的质子酸位可与Pd-H作用,促进H2的脱除.[英文文摘]Pd catalysts supported on various supports have been studied for the oxidant-free dehydrogenation of alcohols.The Pd catalyst loaded on hydrotalcite (HT),which is an acid-base bifunctional support,demonstrates superior benzyl alcohol conversion and benzaldehyde selectivity.Detailed studies using the Pd/HT catalyst reveal that the best performance can be obtained over the catalyst with w(Pd)=0.32%-0.55%.The Pd/HT can be used repeatedly without significant deactivation and can efficiently catalyze the drogenation of various alcohols including the substituted benzylic alcohols, 2-thiophenemethanol, α,β-unsaturated alcohols, and cyclic aliphatic alcohols. The characterization results show that the Pd(II) species over the HT are transformed into Pd nanoparticles or nanoclusters with mean size of 2.0–2.5 nm during the reaction. The highly dispersed Pd(II) species in the catalyst precursors can lead to the formation of smaller Pd nanoparticles, favoring the catalytic performance. We speculate that the basicity of the catalyst may promote the activation of the O-H bond of alcohol to form a Pd-benzyl alcoholate intermediate, which undergoes β-H abstraction by Pd nanoparticles, and the Brönsted acid sites on the catalyst surface may facilitate the release of H2 by the interaction with the formed hydride species on Pd nanoparticles.国家自然科学基金(20873110,20625310,20923004); 国家重点基础研究发展计划(973计划,2010CB732303); 高等学校博士学科点专项科研基金(20090121110007); 福建省重大研究专项(2009HZ0002-1

Comparative analysis of leaf proteomes between tobacco plants growing in different ecological regions of China

为探讨不同生态区烟叶香气风格形成的机理,应用蛋白质双向电泳联用质谱技术,对河南平顶山(浓香型烟叶的典型生态区)和福建龙岩(清香型烟叶的典型生态区)的烟草(Nicotina tobaccum L.cv.K326)叶片蛋白质组成进行了比较研究。结果发现,51个蛋白质在两个生态区发生了差异表达,其中在河南表达量上升的有15个,在福建表达量上升的有25个。另外,还分别有2个和9个蛋白点为在河南和在福建样品中特异表达。采用MALDI-TOF/MS进行肽质量指纹图谱分析,经MSDB、NCBInr和SwissPort数据库查询,共鉴定出25种蛋白质,其中参与叶绿体发育、色素代谢、光合作用相关的蛋白在福建烟区高表达,与糖酵解途径相关的蛋白质在河南烟区中高表达。另外,在两生态区烟叶中都发现有相当数量的特异表达的抗逆和防御蛋白。首次在蛋白质组学水平对不同香气风格烟叶的形成机理进行了探讨。To explore the molecular mechanism of tobacco aroma style formation, protein profiles of mature leaves of tobacco (Nicotina tobaccum L. cv. K326) plants grown respectively in Henan province (Central China) and Fujian province (South China), were compared using two-dimensional electrophoresis. Fifty-one proteins were found to be differentially expressed between tobacco plants from the two different ecological regions. Among them, 15 proteins were up-regulated and 2 were specific to Henan tobacco leaves, while 25 proteins were up-regulated and 9 were specific in Fujian tobacco leaves. Next, the differentially expressed proteins were subjected to MALDI-TOF analysis for identification. It turned out 25 proteins matching homologous sequences in MSDB and NCBInr database. In particular, several proteins involved in chloroplast development, pigment metabolism, photosynthesis were up-regulated in Fujian tobacco leaves, while proteins involved in glycolytic pathway were relatively abundant in Henan tobacco leaves. In addition, some specific proteins related to stress responses were identified both in Henan and Fujian tobacco plants. Thus, the different expression patterns of leaf proteomes may contribute to the formation of special tobacco aroma style. To our knowledge, this was the first attempt to explore the mechanism of tobacco aroma style formation on a proteome level.烟草行业栽培重点实验室资助项目(06TCKL06004)~