Study on the Development Strategy for A Valve Company

流体控制行业是通用机械的重要分支，是国民经济建设的重要装备制造业。阀门作为流体控制的关键设备在国民经济建设中无处不在。虽然我国民营企业在阀门行业的发展中取得了一定成绩，但是规模普遍比较小，产品研发能力弱。 面对当前日趋激烈的市场竞争环境和行业发展机遇，作为阀门行业后起之秀的A流体控制公司在此背景下,如何加快发展,提升持续竞争力,从而在竞争日益激烈的市场中站稳脚跟、健康成长成为我们面临的当务之急。本文在对企业战略理论进行梳理的基础上,采用PEST分析、产业结构模型——五力分析模型、SWOT分析等工具,结合公司所处行业和外部环境进行研究,同时对公司生产能力、技术水平及主要财务情况等内部环境因素进...Fluid control industry is an important branch of general machinery, is an important equipment of national economic construction of manufacturing industry. The valve is a key equipment in the fluid control in the national economy construction everywhere. Although China's private enterprises have achieved certain results in the development of the valve industry, but the scale generally relatively sm...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：X201315626

Seasonal Variations in PM_(10) and Associated Chemical Species in Jiuxian Mountain in Fujian Province

于2011年3月~2012年1月期间在福建德化县九仙山气象站采集大气了PM_(10)样品,分析了九仙山大气PM_(10)中水溶性离子及二元羧酸,; 对其季节分布与来源进行了探讨。结果表明,九仙山大气PM_(10)、水溶性无机离子和有机二元羧酸的季节分布规律较为接近,都表现为春季的浓度显著高于; 其它季节,但9种二元羧酸对PM_(10)的贡献(0.51% 0.41%)显著低于水溶性离子(18.07 %; 8.73%)。其中,水溶性离子组成以NO_3~-和SO_4~(2-)的浓度为最高,其次为Na~+和NH_4~+;阴离子与阳离子当量浓度、NH_4; ~+与SO_4~(2-)当量浓度,以及NH_4~+与NO_3~-当量浓度之间都存在显著正相关关系。有机二元羧酸的组成以乙二酸的浓度为最高,占测量; 二元羧酸总量的75%左右,且随碳数增加呈逐渐递减趋势;来源特征比值(丙二酸/丁二酸、己二酸/壬二酸)、MODIS火点图及后向轨迹图显示,有机二元; 羧酸主要来自大气二次化学反应过程,生物质燃烧的直接贡献很小。PM_(10) samples were collected at the top of Jiuxian Mountain in Fujian; Province from March 2011 to January 2012 and were analyzed for inorganic; water-soluble ions and dicarboxylic acids to investigate their seasonal; variations and sources. The results showed that PM_(10) and its; associated species exhibited much higher levels in the spring than those; in other seasons but the total contribution of the nine species of; dicarboxylic acids to PM_(10) (0.51% 0.41%) was significantly lower; than that of the water-soluble ions (18.07% 8.73%). The water-soluble; ions were characterized by the highest concentrations of SO_4~(2-) and; NO_3~-,followed by Na~+ and NH_4~+. Significant positive correlations; were observed between cation and anion equivalents,as well as between; NH_4~+ and SO_4~(2-) or NO_3~-equivalents. Individual dicarboxylic acid; showed a monotonically decreasing trend with increasing carbon number in; which oxalic acid accounted for approximately 75% of the total; dicarboxylic acids. Characteristic ratios of malonic acid to succinic; acid and adipic acid to azelaic acid,MODIS fire spots,and backward; trajectories showed that dicarboxylic acids mainly originated from; secondary reactions in the atmosphere and that the direct contributions; of open biomass burning to dicarboxylic acid concentrations were; negligible.国家自然科学基金项目; 国家重点研发计划项目; 福建省自然科学基金计划资助项

室内燃烧源排放颗粒物及多环芳烃的粒径分布研究

室内燃烧源排放颗粒物及其多环芳烃（PAHs）的粒径分布是定量评估室内人群呼吸暴露风险的重要参数之一。该研究在再悬浮箱内模拟燃香、燃蚊香、艾灸和吸烟等过程,采用MOUDI采样器采集和分析颗粒物中17种PAHs;同时,采用颗粒物计数器,在实际房间中模拟艾灸和吸烟过程,得到室内颗粒物数浓度的衰减曲线。结果表明,燃烧源烟雾颗粒的排放因子为3.68～22.46 mg/g,颗粒质量粒径呈单峰型,峰值为0.25～0.44μm;US EPA 16种优控PAHs的排放因子为10.52～91.30μg/g,艾绒燃烧排放PAHs的粒径峰值为0.44～1.0μm,略大于其它燃烧源;<1μm颗粒中PAHs的BaP等效毒性当量(BaPTEQ)的贡献占比为85%～98%。来源特征比值的研究显示,艾灸、燃香和吸烟释放的PAHs均归属于生物质燃烧类别。实际室内监测显示,在艾绒和香烟燃烧后室内颗粒物数浓度快速上升,在燃尽时达到峰值,而后在4 h内呈指数规律衰减,且<0.3μm的细颗粒衰减最快。国家自然科学基金项目(41171365

A High-Precision Method for Determining the FBG Peak Wavelength Shift Based on FBG Actual Reflection Spectrum Match

针对目前光纤布拉格光栅(fbg)解调方案中采用低分辨率CCd测量fbg峰值波长时存在的问题,提出一种采用基于fbg实际反射谱构建基函数匹配CCd测量获得的有限测量点确定fbg峰值波长偏移量的新方法。分别在理论和实测上对这种方法的有效性和可行性进行了研究,证明这种采用fbg实际反射谱函数匹配有限测量数据的方法比采用特定函数拟合测量数据的方法能够更准确地获得fbg峰值波长的偏移量。实现了在CCd采样点数少、光谱分辨率较低的情况下对fbg峰值波长偏移量的高精度确定,有效地提高了实际工程应用中基于低成本CCd解调fbg峰值波长及其微小偏移量的准确性。Referring to the problems in using low-resolution charge coupled device(CCD) to measure fiber Bragg grating(FBG) peak wavelength,a high-precision method for determining the FBG peak wavelength shift by matching basis function based on the FBG actual reflection and sampling data measured by CCD is proposed.The effectiveness and feasibility of the new method are studied theoretically and experimentally.It is proved that compared with fitting sampling data by specific functions,the matching method based on FBG actual reflection spectrum can determine FBG peak wavelength shift more accurately.In the case of few sampling data and low resolution of CCD measurement,the high-precision determination of FBG peak wavelength shift is achieved.The accuracy of demodulation of FBG peak wavelength shift using low-cost CCD in the practical applications is improved effectively.国家自然科学基金(61077031);国家质检总局科技计划项目(2010IK077)资助课

经济全球化与中国文学

中国文学面临的冲击林兴宅:我们回顾20世纪90年代以来,中国的文学受到三次冲击。第一次是市场化或者叫商品化的冲击,最明显的变化就是文学边缘化,整个中心转移了,企业家充当了社会主流角色,文学退到社会的边缘再一个变化就是文学和商品的实现连在一起,精品文学慢慢失去社会的关注,而一些流行的、时尚的文学作品地位却在上升。第二次冲击是网

人肝细胞内戊型肝炎病毒结合蛋白的酵母双杂交筛选

为进一步深入研究戊型肝炎病毒(HEV)感染机制以及致病机理,用酵母双杂交系统从人肝细胞cDNA文库中筛选与戊型肝炎病毒衣壳蛋白E2相互作用的蛋白,核酸序列分析及同源性检索表明,4个克隆与E2相互作用,其中一个克隆与P38IP高度同源,细胞免疫共沉淀实验结果显示:在哺乳动物细胞水平仍能够检测到E2与P38IP片段的特异的相互作用

分子氮的电催化还原

对温和条件下分子氮的络合活化已有研究,但用修饰电极法电催化固氮成氨(或肼)尚未见报道,Shilov等曾发现在V(OH)_2-Mg(OH)_2的悬浮液中,V(Ⅱ)可起络合及还原作用,钒固氮酶在缺钼条件下也可活化分子氮,其活性中心可能与钼酶相似,也是通过有机硫配体而定位在蛋白质的肽链上,能否用含有机硫配体的钒表面配合物模拟钒酶,用电催化方法进行电子与能量的偶联从而固氮成氨?本文对此进行了研究

骨髓间充质细胞联合PDMS支架构建移植胰岛微环境的实验研究

目的为了提高移植胰岛的活性和功能,构建适合移植胰岛生存的微环境。方法采用聚二甲基硅氧烷(PDMS)和氯化钠晶体构建三维支架,联合骨髓间充质细胞(MSCs)、纤维蛋白和胰岛共同构建迷你\"人工胰腺\"。采用链脲佐菌素(STZ)诱导的糖尿病大鼠移植模型评价效果,将\"人工胰腺\"移植到糖尿病大鼠大网膜内,对照组行假手术,术后隔天监测移植大鼠血糖水平;数据采用t检验和曼-惠特尼U检验。结果用PDMS构建的三维巨孔支架,支架内可见大量不规则孔洞空间。胰岛和MSCs可成功装载入支架内,HE染色结果显示,支架孔内存在胰岛,胰岛周围包绕有MSCs。糖尿病大鼠大网膜内移植结果显示,移植后各时间点(1,3,5,7 d),\"人工胰腺\"移植组糖尿病大鼠血糖水平分别为(278.70±86.06) mg/dl、(323.50±44.29) mg/dl、(283.30±74.00) mg/dl、(304.80±13.33) mg/dl,较假手术对照组(606.00±52.40) mg/dl、(589.70±55.78) mg/dl、(615.00±54.84) mg/dl、(630.30±48.17) mg/dl均降低,差异具有统计学意义(t=7.96、9.15、8.82,U=0.00,P均<0.01)。结论 MSCs联合PDMS三维支架构建的微环境,可为移植胰岛提供生存的环境,为临床开展胰岛移植提供新的策略

ENERGY BUDGETS OF HALIOTIS DIVERSCICOLOR AQUATILIS FED BY GRACILARIACEAE LICHENIODES AND FORMULA FEED

通过投喂江蓠 (Gracilariaceaelicheniodes)和配合饵料对九孔鲍 (Haliotisdiversicoloraquatilis)的能量收支进行了比较研究 .结果表明 :两种饲料组的九孔鲍耗氧率在昼夜之间均并没有明显差异 (P >0 .0 5 ) ,九孔鲍摄食两种饵料的吸收率也没有显著差异 (P >0 .0 5 ) ,而饵料系数、蛋白质效率、总生长效率则有显著的差异 (P 0 .0 5 ) .因壳能很少 ,在测定中可以忽略 .配合饵料组的软体部生长能显著高于江篱组的 (P <0 .0 5 ) .摄食江蓠和配合饵料的九孔鲍能量收支方程分别为 :江蓠组10 0C =(12 .76± 1.2 2 )F +(76 .4 7± 5 .33)R +(2 .74± 0 .4 0 )U +(6 .75± 0 .4 6 )M +(2 .78± 0 .4 8)Pg+(0 .0 3±0 .0 1)Psh- (1.5 3±... 【英文摘要】 The energy budgets of Haliotis diverscicolor aquatilis fed by Gracilariaceae licheniodes and formula feed were studied in this paper. There was no significantly different diurnal oxygen consumption rate of H. diversicolor aquatilis between the two groups (P>0.05). The absorption efficiency of the two feeds groups was not significantly different (P>0.05), while the feed coefficient,protein efficiency ratio,gross growth efficiency were significantly different (P<0.05). Although the excretion energy of the for...福建省自然科学基金项目(B0110035)资助~

Interfacial Activation of Catalytically Inert Au (6.7 nm)-Fe3O4 Dumbbell Nanoparticles for CO Oxidation

通讯作者地址: Zheng, NF (通讯作者), Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 电子邮件地址: [email protected] nanoparticles epitaxially grown on Fe3O4 in Au (6.7 nm)-Fe3O4 dumbbell nanoparticles exhibit excellent stability against sintering, but display negligible catalytic activity in CO oxidation. Starting from various supported Au (6.7 nm)-Fe3O4 catalysts prepared by the colloidal deposition method, we have unambiguously identified the significance of the Au-TiO2 interface in CO oxidation, without any possible size effect of Au. In situ thermal decomposition of TiO2 precursors on Au-Fe3O4 was found to be an effective way to increase the Au-TiO2 interface and thereby optimize the catalytic performance of TiO2-supported Au-Fe3O4 dumbbell nanoparticles. By reducing the size of Fe3O4 from 15.2 to 4.9 nm, the Au-TiO2 contact was further increased so that the resulting TiO2-supported Au (6.7 nm)-Fe3O4 (4.9 nm) dumbbell particles become highly efficient catalysts for CO oxidation at room temperature.National Natural Science Foundation of China 20871100 20721001 Distinguished Young Investigator Grant 20925103 Research Fund for the Doctoral Program of Higher Education of China 200803841010 Natural Science Foundation of Fujian 2009J06005 Key Scientific Project of Fujian Province 2009HZ0002-