The Analysis of Overall Listing of TCL Group

本文主要研究TCL集团吸收合并TCL通讯同时整体上市及其他的相关问题。由于证券市场发展的历史原因，上市公司往往是集团公司剥离企业生产，或服务中某一些环节的优质资产包装后上市。当公司发展到一定阶段，则希望通过集团整体上市达到理清产权关系、拓宽融资渠道、消除市场痼疾、整合集团内部资源的目的。因此，这种集团上市是一种特定市场环境下的整体上市模式，而不是一开始企业集团就整体上市的模式。本文通过分析TCL集团的整体上市，研究这种整体上市的模式给TCL集团带来的影响，给其它集团在整体上市时在整体上市模式、兼并收购的支付方式、换股比率的确定以及会计处理方式的选择等方面带来的借鉴，最后从实证的角度分析整体上市...AbstractThis thesis deals with the overall listing of group companies. Due to the development history of the securities market, a group company most usually would segment and package the high-quality assets in some of its manufacturing or service sections for listing. When a listed company develops to a certain stage, it becomes, however, intent on the overall listing of the group company with an ...学位：工商管理硕士院系专业：管理学院工商管理教育中心_工商管理硕士(MBA)学号：20021512

Studies on Dietary Protein Sources Utilization , Calcium and Phosphorus Requirements of Ivory Shell, Babylonia areolata Link

蛋白质和钙磷是水产动物重要的营养成分。本文选用鱼粉（Fishmeal:FM）、豆粕（Soybeanmeal:SBM）、菜籽粕（Rapeseedmeal:RM）、啤酒酵母（Beeryeast:BY）为原料设计六种不同蛋白源组合的饲料，在水温为25-28℃之间、盐度为26-28的条件下，对初始体重为2.95±0.28g、壳长为2.06±0.10cm的方斑东方螺（BabyloniaareolataLink）进行为期60d的生长实验，以确定方斑东风螺最适宜的蛋白源，并对方斑东风螺肉质营养组成和免疫应答能力进行实验分析。另外，本文在以酪蛋白-白鱼粉为基础日粮的等氮饲料（粗蛋白，39%）中添加五个处理水平...Protein, calcium (Ca) and phosphorus (P) are important nutrient compositions for aquatic animals. A 60-day growth study was conducted using ivory shell (Babylonia areolata Link) with mean initial weight and shell length of 2.95±0.28 g and 2.06±0.10 cm, respectively, to evaluate the efficacy of six practical diets containing various protein sources such as fish meal (FM), soybean meal (SBM), rapese...学位：理学硕士院系专业：海洋与环境学院环境科学与工程系_环境科学学号：2262006115235

社会保障税的国际比较与借鉴

人均GDP超过1000美元,人们基本过上小康生活,然而我国也进入了“高风险”时期:收入差距扩大、失业威胁 加剧、人口老龄化严峻。如何防范和解决好这类问题关系到改革、发展与稳定的大局。完善社会保障制度,真正发挥 社会保障“安全网”的功效已成为人们共识。本文比较分析了各国社会保障税的税制设置方式,并进一步探讨在我国 开征社会保障税的一些相关问题。福建省莆田学院科研基金项目(2005022)

Preliminary Study on Thermochemical Curing of Polycarbosilane Fibers

［中文文摘］以异丙醇锆(ZIP)为交联剂、聚碳硅烷(PCS)为先驱体,在Ar气氛的保护下通过干法纺丝、热化学交联工艺使PCS从热塑性转变热固性结构。研究了该工艺对PCS纤维质量变化、Si-H反应程度、溶解性及氧含量等性能的影响。实验结果表明:在不熔化过程中,PCS结构中的Si-H键与ZIP反应,在PCS分子间形成Si-O-Zr交联结构,随着交联温度和保温时间的升高,Si-H反应程度和纤维失重率相应提高;在测试范围内最大Si-H反应程度为73.06%,失重率2.678%,氧含量低于2.0%。［英文文摘］Polycarbosilane from dry spinning to SiC fiber through thermochemical curing,which is catalysed by zirconium iso-propoxide(ZIP) under Ar gas stream,is transformed from thermoplastic to thermoset structure.The effects of curing temperature and holding time on cured PCS fibers are mainly studied in this paper.The experimental result shows that Si-H bonds in polycarbosilane are crosslinked by ZIP during the curing process which is made up of Si-O-Zr structure in PCS molecule.And the reaction degree of Si-H bonds and mass loss of fibers are increased accordingly with thetemperature and holding time rising.The maxium reaction degree of Si -H bonds is 73.06%, mass loss 2.678%,and oxygen content no more than 2.0%, respectively.总装备部预研基金资助(51412020404QT870

Research Development of Curing Treatment of Polycarbosilane to Prepare Continuous SiC Fibre

［中文文摘］综述了先驱体转化法制备SiC纤维过程中聚碳硅烷(PCS)的各种不熔化处理方式及其发展状况。通过不熔化方式对终烧产物SiC纤维性能的比较,讨论了各种不熔化方式的优缺点及其对SiC纤维中氧含量的影响,并指出了制备高性能SiC纤维不熔化技术研究的国内外差距及发展趋势。［英文文摘］Different curing treatment methods of polycarbosilane fibres in the process of fabricating SiC ceramic fibres by preceramic polymer pyrolysis usually containing polymer synthesis, spinning, curing and pyrolysis, are reviewed in this paper. Current development situation of these manners is thoroughly presented. By comparing the element composition and mechanical properties of SiC fibre from different cross-linking manners, some advantages and drawbacks of these methods, and their effects on the oxygen content in SiCfibre are also discussed. Moreover , the developmental trend of cross　linking technique to fabricate excellent heat2resistant SiC fibres is proposed

Research Development of Nearly Stoichiometric SiC Fibers Derived from Polycarbosilane

[中文文摘]综述了聚碳硅烷制备近化学计量比SiC纤维的研究进展,总结了H2在PCS纤维裂解过程中的作用机理,比较了纯H2气氛、分阶段不同气氛、全过程H2/Ar混合气氛条件下得到的SiC纤维的组成和性能变化规律。纯H2气氛800℃以上保温4h,可得到近化学计量比SiC纤维;分阶段气氛下,气氛转换温度为800℃,烧结至1300℃保温1h,可得到近化学计量比SiC纤维;混合气氛下,氢气浓度为60%左右,烧结至1300℃保温1h,可得到近化学计量比SiC纤维。在这些气氛条件下得到的近化学计量比SiC纤维,烧结后的高温力学性能均优于非化学计量比SiC纤维。［英文文摘］Nearly stoichiometric SiC fibers prepared from polycarbosilane in three kinds of atmosphere are studied,namely first in H_2 atmosphere,then in Ar atmosphere and H_2/Ar mixed atmosphere. In pure H_2,when temperature T≥800℃ and holding time t≥4h,the stoichiometric SiC fibers could be got.In the second case,when PCS is pyrolided in H_2 from 25℃ to 800℃, in Ar 800～1300℃ and holded for 1h at 1300℃, stoichiometric SiC fibers could be got.In H_2/Ar, when H_2 concentration is 60% and holded for 1h at 1300℃,stoichiometric SiCfibers could be 2 got. In H / Ar , when H concentration is 60 % and holded for 1h at 1300℃,stoichiometric SiC fibers can be got. The　stoichiometric SiC fibers show great mechanical property in high temperature

River eco-regionalization oriented by ecological restoration

经济社会的快速发展不可避免的对河流生态系统造成了损伤,如何使受损河流生态系统恢复到健康状态已经成为当前亟待解决的重要环境问题之一.河流修复生态功能分区是对河流进行适应性生态修复的必要前提和基础,可为制定生态修复目标提供科学依据.本研究在已有分区体系基础上,依据生态功能分区的理论,对河流修复生态功能分区的内涵进行了辨析,从理论上对分区方法进行了探讨,并以永定河(北京段)为例进行了实证研究,提出了永定河(北京段)河流修复生态功能分区方案,最终结果划分6个区域;并结合区域社会经济发展状况和相关发展规划等因素,提出各区段的生态修复调控指标,为永定河(北京段)生态修复提供科学指导.Rapid socio-economic development would inevitably result in the damage of the river ecosystem at present and how to restore damaged river ecosystems to health status has become one of the important environmental issues urgent to be solved.Function zoning is the prerequisite for adaptive restoration,which could provide the scientific basis for the ecological restoration goal.In this work,function zoning of river was firstly compared with the main ecological regionalization,for both advantages and shortcomings.Based on the theories of ecological function regionalization,the conception of river restoration and eco-regionalization was discussed and the approach of eco-regionalization was studied theoretically.The Yongding River(Beijing segment) was selected as a study case and ecological function zoning including six river reaches was developed.The regulation index for ecological restoration of each reach was also proposed,which focused on ecological restoration of Yongding river in Beijing.北京市科学技术委员会"永定河生态修复目标体系研究"项目(No.D090409004009003);国家自然科学基金(No.41001108);山东省自然科学基金(No.ZR2009DL011);北京市生态学重点学科项目---

SDF-1α/CXCR4信号通路对轴向应力刺激促进骨再生中影响的实验研究

目的 通过轴向应力刺激促进骨再生,观察基质细胞衍生因子1α/趋化因子CXC亚族受体4(stromal cell-derived-factor-1α/cysteine X cysteine receptor 4,SDF-1α/CXCR4)信号通路变化,探讨轴向应力刺激促进骨再生的机制。方法 取72只雄性新西兰大白兔,于右后肢胫骨近端内侧制备直径8 mm圆形皮质骨缺损并脱蛋白松质骨支架修复模型后,随机分为3组(n=24)。A组腹腔注射PBS,B组术肢给予应力刺激治疗+腹腔注射PBS,C组术肢给予应力刺激治疗+腹腔注射CXCR4拮抗剂(AMD3100)。术后2、4、8、12周,摄X线片并采用Lane-SandhuX线评分标准评价骨愈合情况,取标本行HE染色观察新生骨组织及支架降解,免疫组织化学染色观察VEGF、CXCR4表达水平;4、8周取标本Western blot检测SDF-1α及CXCR4蛋白表达水平。12周行Micro-CT检查,计算新生骨体积及新生骨密度。结果 X线片检查示,除术后2周各组骨缺损区及支架无明显变化外,4、8及12周时B组骨愈合评分均优于A、C组(P<0.05)。12周时Micro-CT扫描可见B组骨缺损修复、髓腔再通,新生骨体积及骨密度均高于A、C组(P<0.05)。HE染色显示,术后4周开始B组骨再生及支架降解均明显快于A、C组。免疫组织化学染色示,各组VEGF及CXCR4阳性表达均在4周时达峰值;各时间点B组VEGF及CXCR4表达量均显著高于A、C组(P<0.05)。Western blot检测显示,4、8周时B组SDF-1α与CXCR4表达量均显著高于A、C组(P<0.05)。结论 轴向应力刺激促进骨再生可能与其促进骨缺损区组织高表达SDF-1α,激活与其下游调控BMSCs募集的CXCR4信号有关

SDF-1α/CXCR4信号通路在轴向应力刺激促进骨再生中的作用研究

目的通过轴向应力刺激促进骨再生,观察基质细胞衍生因子1α/趋化因子CXC亚族受体4(stromal cell-derived factor 1α/cysteine X cysteine receptor 4,SDF-1α/CXCR4)信号通路变化,探讨轴向应力刺激促进骨再生的机制。方法取72只雄性新西兰大白兔,于右后肢胫骨近端内侧制备直径8 mm圆形皮质骨缺损并脱蛋白松质骨支架修复模型,随机分为3组(n=24)。A组腹腔注射PBS,B组术肢给予应力刺激治疗+腹腔注射PBS,C组术肢给予应力刺激治疗+腹腔注射CXCR4拮抗剂(AMD3100)。术后2、4、8、12周,摄X线片并采用Lane-Sandhu X线评分标准评价骨愈合情况,取标本行HE染色观察新生骨组织及支架降解,免疫组织化学染色观察VEGF、CXCR4表达水平;4、8周取标本Western blot检测SDF-1α及CXCR4蛋白表达水平;12周行Micro-CT检查,计算新生骨体积及新生骨密度。结果 X线片检查示,除术后2周各组骨缺损区及支架无明显变化外,4、8及12周时B组骨愈合评分均高于A、C组(P<0.05)。12周时Micro-CT扫描可见B组骨缺损修复、髓腔再通,新生骨体积及骨密度均高于A、C组(P<0.05)。HE染色显示,术后4周开始B组骨再生及支架降解均明显快于A、C组。免疫组织化学染色示,各组VEGF及CXCR4阳性表达均在4周达峰值;各时间点B组VEGF及CXCR4表达量均显著高于A、C组(P<0.05)。Western blot检测显示,4、8周时B组SDF-1α与CXCR4表达量均显著高于A、C组(P<0.05)。结论轴向应力刺激促进骨再生可能与其促进骨缺损区组织高表达SDF-1α,激活与其下游调控BMSCs募集的CXCR4信号有关。国家自然科学基金资助项目(81401783);;\n福建省自然科学基金资助项目(2016J05208);;\n军队后勤科研项目基金(CNJ16C013);;\n军队青年医学科技培育项目(19QNP046)~

SDF-1α/CXCR4信号通路在轴向应力刺激促进骨再生中的作用研究

目的 通过轴向应力刺激促进骨再生,观察基质细胞衍生因子1α/趋化因子CXC亚族受体4(stromal cell-derived-factor-1α/cysteine X cysteine receptor 4,SDF-1α/CXCR4)信号通路变化,探讨轴向应力刺激促进骨再生的机制..