69 research outputs found

    The Feasibility Study of LiFePO4 Project

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    随着全球燃油供求矛盾加剧以及环境污染问题日益严重,世界各国加快战略部署,把发展新能源汽车作为国家战略。锂离子电池凭借其独特的优势备受业界推崇,磷酸铁锂作为锂离子电池的正极材料,具有超长寿命、使用安全、大容量、耐高温、无记忆效应、绿色环保等优点,受到理论界和实业界的关注。 本文主要研究磷酸铁锂项目的可行性,运用文献回顾法和实地调研法对本项目进行研究。首先运用文献法对国内外磷酸铁锂正极材料的研究进行了详细的归纳和评述。在此基础上,采用PEST、波特五力模型、SWOT方法,从宏观、中观、微观三个层面系统的分析了磷酸铁锂项目所面对的环境。接着,阐述了项目的投资估算及资金筹措问题,从财务、社会效益、生...As the conflict between supply and demand of oil is intensified and the environmental pollution becomes serious, new energy vehicles has been considered a national strategy for many countries. The use of Lithium Ion Battery is highly emphasized by the industry for its outstanding advantages. As the cathode material of Lithium Ion Battery, LiFePO4 therefore has attracted serious concerns of the the...学位:工商管理硕士院系专业:管理学院_工商管理硕士(高级管理人员工商管理硕士)学号:X201515618

    Study on the Nutrient Content of Bamboo Leaves and Soil in Coastal Region of Fujian

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    第一作者简介:陈松河,男, 1968年出生,福建长泰人,研究员,硕士生导师,硕士,主要从事园林植物(竹类)分类、栽培与抗逆性研究。通信地址: 361003厦门市思明区虎园路 25号, Tel:0592-2039619,E-mail:[email protected]。[中文文摘]为了研究福建滨海地区竹类叶片与土壤养分状况,对福建滨海3地厦门园博苑百竹园、莆田赤港华侨农场竹园和莆田湄洲岛竹类植物叶片和土壤养分进行实地调查取样分析。结果表明:3地17种竹类成熟叶片和衰老叶片氮(N)、磷(P)含量存在显著差异,且存在明显的地域性差异;竹类生长土壤氮(N)含量均值大小依次为厦门园博苑0.3697mg/g、莆田赤港0.2820mg/g、莆田湄洲岛0.1921mg/g;磷(P)含量均值大小依次为莆田湄洲岛0.3926mg/g、厦门园博苑0.3134mg/g、莆田赤港0.2152mg/g;莆田赤港和莆田湄洲岛10种竹类成熟叶片叶绿素a含量(Ca)和叶绿素b含量(Cb)均值比达到2.17,Ca和Cb间经11种单因子模型拟合,最优的拟合方程为:YA=0.9699+3.7374B-0.7166B2+0.0439B(3A代表Ca,B代表Cb),相关系数的平方达0.934,呈极显著相关关系;竹类植物盐害等级为0级的有5种,盐害等级为1级的有10种,盐害等级为2级的有2种,盐害等级为3级以上的未见。[英文文摘]In order to study nutrient status in bamboo leaves and soil,3 coastal region in Fujian, Xiamen Garden & Flower Expo (XMYB), Farm for Returned Overseas Chinese in Putian (PTCG) and Meizhou Island of Putian (PTMZ) were studied in this paper by field investigation and sampling analysis. The results were shown as follows: the content N and content P in mature and senescent of 17 species leaves in 3 coastal region were significant difference, also significant difference in region. The average value content N of bamboo soil inXMYB, PTCG, PTMZ were 0.3697, 0.2820, 0.1921 mg/g in turn. The average value content P of bamboo soil inPTMZ, XMYB, PTCG were 0.3926, 0.3134, 0.2152 mg/g in turn. The proportion of 10 mature bamboo speciesaverage value between content Ca and content Cb was 2.17, through 11 models of single factor analysis, the relation between the bamboo’s chlorophyll a content and chlorophyll b content accorded with model cubic: YA= 0.9699 + 3.7374B-0.7166B2 + 0.0439B3 (A stands for content Ca, B stands for content Cb), the square of itscorrelation coefficient was 0.934, it was very significant. Bamboo salt damage 0 degree had 5 species, 1 degreehad 10 species, 2 degree had 2 species, no species in 3-5 degree.厦门市科学技术局科研项目“竹类植物耐盐机理与筛选应用研究”(3502Z20102003);厦门市市政园林局科研项目“竹类植物在观赏园艺上的应用研究”(YK-2000-02

    On the Origin and the Judicial Application of Chinese Modern Marriage in Hong Kong: Also on the Characteristics of Judicial Reasoning of the Hong Kong Courts

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    新式婚姻是香港婚姻法律史上一种特殊的婚姻形式。20世纪30年代至60年代,新式婚姻从中国大陆地区传入香港并广泛流行,但那时候,这种婚姻在香港不具有法律效力。这种状况与港英政府的法律治理背道而驰。1970年,港英政府制定《婚姻制度改革条例》,将1971年10月7日以前在香港缔结的新式婚姻纳入从英国引进的法律制度之中,使这些婚姻的当事人获得已婚者的法律地位。 由于新式婚姻的产生和文化背景特殊,为了避免将人们所认可的新式婚姻排除在受法律认可的有效婚姻之外,《婚姻制度改革条例》用了一种相当笼统的方式对“新式婚姻”进行定义。香港法院在审理有关新式婚姻的司法案件时,通过追溯这种婚姻的历史和文化渊源并参考...Chinese modern marriage is a unique form of marriage in the history of marriage law of Hong Kong. During 1930s and 1960s, Chinese modern marriage was informally introduced from Mainland China to Hong Kong and flourished there. However, such form of marriage had no validity in Hong Kong, thus damaging the rule of law in Hong Kong. To solve this problem, Marriage Reform Ordinance was enacted in 1970...学位:法学硕士院系专业:法学院法律系_法学理论学号:1362009115010

    Progress of C_2-Symmetric Biphenyl Bisphosphine Ligands Ⅲ

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    手性膦配体的合成及其在手性诱导催化反应中的应用一直是不对称合成与催化研究中非常重要的研究领域之一。近10年来,大量的C2-轴对称手性双膦配体被合成出来并成功地应用于不对称催化研究,本文从C2-轴对称联苯类手性双膦配体的介绍、合成方法、C2-轴对称联苯类手性双膦配体在不对称催化氢化、以及其在其他不对称诱导反应中的应用4个方面综述了相关研究进展,并对今后配体的合成及应用前景进行了展望。A vast number of biphenyl atropisomeric diphosphine ligands are successfully applied in asymmetric catalysis.The synthesis and applications of this type of ligands are a continuous interesting theme in organic chemistry.This review describes recent progress in synthesis and application of C2-Symmetric diphosphine ligands on the asymmetric catalysis hydrogenation and other asymmetric induced reaction,and the future ligand synthesis and application prospect.国家自然科学基金(20272037); 教育部博士点基金(20080610022); 四川自然科学基金重点项目(07ZA109

    Progress of the Study on C_2-symmetric Biphenyl Bisphosphine Ligands(一)

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    手性膦配体的合成及其在手性诱导催化反应中的应用一直是不对称合成与催化研究中非常重要的研究领域之一。近10年来,大量的C2-轴对称手性双膦配体被合成出来并成功地应用于不对称催化研究,本文从C2-轴对称联苯类手性双膦配体的介绍、合成方法,C2-轴对称联苯类手性双膦配体在不对称催化氢化,以及其在其他不对称诱导反应中的应用4个方面综述了相关研究进展,并对今后配体的合成及应用前景进行了展望。A vast number of biphenyl atropisomeric diphosphine ligands are successfully applied in asymmetric catalysis.The synthesis and applications of this type of ligands are a continuous interesting theme in organic chemistry.This review describes recent progress in synthesis and application of C2-Symmetric diphosphine ligands in the asymmetric catalysis hydrogenation and other asymmetric induced reaction.And the future ligand synthesis and application are predicted.国家自然科学基金(20272037); 教育部博士点基金(20080610022); 四川自然科学基金重点项目(07ZA109

    Progress of C_2-Symmetric Biphenyl Bisphosphine LigandsⅡ

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    手性膦配体的合成及其在手性诱导催化反应中的应用一直是不对称合成与催化研究中非常重要的研究领域之一。近十年来,大量的C2-轴对称手性双膦配体被合成出来并成功地应用于不对称催化研究,本文从C2-轴对称联苯类手性双膦配体的介绍、合成方法、C2-轴对称联苯类手性双膦配体在不对称催化氢化以及其在其他不对称诱导反应中的应用4个方面综述了相关研究进展。A vast number of biphenyl atropisomeric diphosphine ligands have been successfully applied in asymmetric catalysis.The synthesis and applications of this type of ligands are a continuous interesting theme in organic chemistry.This review describes recent progress in synthesis and application of C2-Symmetric diphosphine ligands on the asymmetric catalysis hydrogenation and other asymmetric induced reaction.国家自然科学基金(20272037); 教育部博士点基金(20080610022); 四川自然科学基金重点项目(07ZA109

    资源性植物提取物的抗氧化机理及其在饲料中的应用

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    近年来大量研究表明,天然植物抗氧化剂由于高效、低毒已成为抗氧化制品研究开发的热点。本文针对我国特有的资源性植物,综述了茶叶以及几种大面积栽培的资源性植物及其提取物的抗氧化机理,并展望其在饲料中的应用前景

    海上风电柔性直流系统设计及工程应用

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    针对中国第一个海上风电柔性直流送出工程—江苏如东工程,从系统拓扑方案构建、过电压与绝缘配合、系统功率盈余问题与交流故障穿越技术以及控制保护技术等方面开展了深入研究,构建了轻型紧凑化的海上风电柔性直流系统拓扑方案,取消了海上换流站的启动回路与接地回路等;提出了海陆换流站的避雷器配置方案与参考电压的选取原则,形成了海陆换流站的绝缘配合方案的典型范式;提出了集中式、分布式、混合式直流侧有功功率动态平衡装置的典型拓扑方式,解决了陆上换流站交流侧故障穿越难题;提出了工程的整体控制保护方案,并研究了一种基于电压前馈环节比例谐振控制的有源谐振抑制方法,显著降低了工程的振荡风险。通过工程实际运行,全面验证了所提技术的有效性

    AFLP analysis of arbuscular mycorrhizal fungi in roots of Prunus mume

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    第一作者: 蔡邦平,博士,副研究员。主要研究方向: 园林植物与观赏园艺、植物菌根。电话: 0592--2039576 Email : cbangping@ 163.com 地址: 361003 福建省厦门市思明区虎园路25 号厦门市园林植物园。[中文文摘]为了解决梅根系共生的丛枝菌根(AM)真菌难以应用形态学鉴定的问题,以巢式PCR的AFLP方法研究梅根系AM真菌DNA多态性。试验采集梅花期的根系样品,应用改良CTAB法提取总DNA,经纯化处理后,应用巢式PCR扩增根系AM真菌基因片段,进行AFLP分析。结果表明,18个梅品种的30个根系样品中,仅有8个样品经巢式PCR后获得纯化的DNA片段,占试验样品数的26.7%;8个样品共得到指纹图谱带24条,各样品平均多态性位点数为3.0个,Nei’s基因多样性为0.4097±0.0848,Shannon信息指数为0.5968±0.0955;利用Nei’s遗传相似性系数聚类,梅品种根系内AMF基因组DNA的聚类类别与梅"品种群"这一分类级别无相关性。该试验为植物根系共生AM真菌DNA多态性研究提供了一种简便的技术。[英文文摘]DNA polymorphism of arbuscular mycorrhizal fungi (AMF) was analyzed through the method of DNA amplification by nested PCR based on AFLP marker,in order to solve the difficulty of identifying the species of AMF associated with mei flowers (Prunus mume Sieb.et Zucc.).A total of 30 root samples from 18 mei cultivars were collected in the flowering phase from Wuhan Mei Garden as experimental materials.The results show that the purified DNA can be extracted only from eight root samples that account for 26.7% of total root samples.Totally 24 polymorphic loci were obtained from eight sample roots,averaging 3. 0 loci for each sample.The average genetic identity was 0. 409 7 ±0. 084 8,and the Shannon information index was 0. 596 8 ± 0. 095 5. The clustered groups of AMF DNA by AFLP marker from different cultivars were not identical with cultivar groups of P.mume.The results indicate that the AFLP marker technology is a brief and effective method to study the DNA polymorphism for the AMF in the roots of a plant.教育部科学技术研究重点项目(104034);; 国家自然科学基金项目(30670047);; 厦门市科技计划项目(3502Z20072010、3502Z20112004
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