Study on the Polymorphism of Fatty Acid of Ralstonia solanacearum

细菌性青枯病是一种由青枯雷尔氏菌(Ralstoniasolanacearum)引起的植物毁灭性土传病害。作为最重要的植物病原微生物之一,青枯雷尔氏菌的不同菌株在寄主范围、地理分布、为害特征、流行特征、种下分类等方面存在较大差异，现有的种下分类体系仍不足以描述此差异。本论文对收集整理的40个菌株进行了研究，测定各菌株的生理小种、生化型和致病型；利用气相色谱技术检测菌株细胞内的脂肪酸，分析其脂肪酸的分布多态性；研究青枯雷尔氏菌脂肪酸多态性与现有种下分类方法之间的关系；运用统计分析方法初步建立了脂肪酸型判别模型。 研究结果表明：青枯雷尔氏菌在菌体形态、致病性、生理生化等方面都存在较大的差异，呈现出...Bacterial wilt disease is a fatal soil-transmitting disease attacking many plants especially eggplant, caused by Ralstonia solanacearum. There was significant polymorphism of its taxonomy as well as host range, geographical distribution, environmental interactions and epidemiology. The study included race, biovartype and pathogenicity of R. solanacearum; Fatty acids of 40 strains of R. solanacearu...学位：理学硕士院系专业：生命科学学院生物学系_细胞生物学学号：20042607

企业投资风险管理中的若干财务与会计问题研究

投资是现代企业的三大理财活动之一,它涵盖了企业的内部资金配置与外部资金投放。在本质上,一个企业可以看作是多项投资的组合。投资的成败,是企业生存、发展以及实现企业目标的关键,而投资又是风险与收益并存的活动,随着全球经济与科学技术的迅猛发展,企业投资面临的内外部环境日趋复杂,投资风险有加大的趋势。与此同时,企业缺乏风险意识,忽视技资风险管理的情况却较为普遍,近年来韩国大企业的衰亡,我国民营企业的大起大落,无不与忽视投资风险管理有直接的关系。本文试图对企业投资风险管理的若干财务与会计问题进行探讨,以此为企业重视投资风险,进行投资风险管理提供有益的思路。由于本人水平有限,时间仓促,文章难免存在错漏,敬...学位：管理学硕士院系专业：会计系_会计学学号：19961101

论选择权式国债操作策略

低利率时期,由于债券投资面临着利率波动的种种不确定性,特别是利率提高会给投资人带来巨大的投资损失。并且我国并不存在金融期货、期权等避险工具,使债券投资人在低利率时期非常被动。本文试图提出连动式债券(StructuredNote)为概念的“选择权式国债操作策略”,以能尽量避免低利率时期投资国债的风险

Analysis of Clinical Pharmacists Participating in the Warfarin Anticoagulation Treatment for 1 Double Valve Replacement Patient with Thrombocytopenia

目的探讨双瓣置换术后并发血小板减少的患者的抗凝治疗策略,为临床药师参与抗凝治疗提供参考。方法临床药师回顾性分析1例双瓣置换术后患者血小板减少的原因,结合药代动力学知识和相关文献资料,确定华法林初始剂量和目标国际标准化比值(INR),优化抗凝方案。结果患者血小板计数逐渐恢复正常;华法林抗凝治疗以5 mg为初始剂量,目标INR为1.8~2.5。经过五次剂量调整后以3.125 mg的维持剂量带药出院,出院时INR为1.5。结论临床药师参与可为患者提供更加安全、有效的治疗方案。Objective To explore the anticoagulation strategies for 1 double value replacement patient with thrombocytopenia, and to nsummarize the experience of clinical pharmacists participating in the anticoagulant therapy. Methods The clinical pharmacist retrospec-tively analyzed 1 patient with thrombocytopenia after double valve replacement. According to pharmacokinetic knowledge and related lit-eratures, the initial dose of warfarin and the target international normalize( INR) were determined and the anticoagulation regimen was optimized. Results The platelet counts gradually returned to normal; the warfarin anticoagulation was started with an initial dose of 5 mg,the target INR was 1. 8- 2. 5. After adjusting the dosage five times, the patient discharged with a maintenance dose of 3. 125 mg and an INR of 1. 5. Conclusion The participation of clinical pharmacists can provide more safe and effective treatment regimen for patients

A Study on the Application and Revelation of PPP in Philippine Infrastructure Construction

菲律宾新政府采取一系列措施推行PPP模式在基础设施建设中的应用,本文概述了PPP模式在菲律宾基础设施建设中的进展及发展趋势,分析了菲律宾政府大力推行该模式的经济动因及PPP模式的潜在风险,并提出相应建议及对我国的启示。Philippine government of President Aquino Ⅲ adopts a series of measures to improve the PPP(Public-Private Partnership)in the infrastructure construction recently.This article discusses the development and direction of the PPP in Philippine infrastructure construction,analyzes the economic motives and risks of Philippine government,makes some suggestions,and eventually puts forward some revelations for China

Hira基因产物在银鲫和彩鲫卵子发生过程中的动态变化

为进一步研究Hira基因在卵子发生和雌核发育过程中的作用,通过原位杂交和免疫荧光定位的方法检测了Hira mRNA和蛋白质在雌核发育银鲫和两性生殖彩鲫卵子发生过程中的动态变化。结果表明,银鲫和彩鲫卵子发生过程中Hira基因转录产物的变化基本一致,在Ⅰ期卵母细胞的细胞核中大量表达,至Ⅱ期卵母细胞时转至细胞质中均匀分布,在Ⅲ期卵母细胞中,杂交信号逐渐移向细胞的周边,到Ⅳ期时随着卵黄物质大量积累,杂交信号几乎不见。HIRA蛋白在银鲫和彩鲫卵子发生过程中的变化略有差别。HIRA蛋白在银鲫Ⅰ期卵母细胞中没有表达,

福尔马林固定白鱀豚标本DNA提取及其遗传多样性的初步研究

福尔马林固定标本是宝贵的遗传资源,但是如何有效利用其中的遗传信息一直存在问题。本文尝试从标本预处理、消化、PCR扩增各方面综合考虑和优化改进,成功提取并扩增21头福尔马林固定白豚标本线粒体DNA控制区410bp片段。采用了3种预处理方法尽量去除固定标本中残存的甲醛,从试验结果来看,从酒精梯度+临界点干燥处理的标本中提取的DNA在扩增时具有明显优势。通过蛋白酶K消化过程中对于酶的浓度、温浴时间的比较试验,发现随着采用大幅提高酶浓度、延长消化时间等高强度的蛋白酶消化操作后,DNA的质量和产量均得到显著提高

人民币套息交易:市场基础和收益风险特征

在全球经济金融虚拟化背景下,利率与汇率的波动性增强。以跨国公司为代表的经济主体为实现利润最大化目标,在全球进行资源优化配置,频繁进出利率与汇率市场,进行套息交易。相应交易的长期性和广泛性表明,利率平价理论提出的利率与汇率间的平价均衡关系并不成立,套息交易对金融系统安全性具有负面影响。在资本账户未完全放开的条件下,关于人民币套息交易机理机制的实证研究表明,人民币套息交易有多种途径,大宗商品交易是较突出的渠道。因此,在人民币国际化过程中须健全金融监管,协调好资本账户开放的步骤与速度,防范套息交易危害实体经济发展。国家自然科学基金项目“资金流、交易者异质性与股市波动”(71373225)阶段性成

Road Dust Loading and Chemical Composition at Major Cities in Fujian Province

采集并分析了福建省重点城市厦门、漳州、泉州和莆田城区具有代表性的57个地面扬尘和16个土壤样品的26种无机元素、8种水溶性离子和碳成分等组成.不同城市粒径≤100μM的路面尘负荷平均值在6.99 g.M-2与10.11 g.M-2之间,而粒径≤2.5μM的路面尘(PM2.5)负荷平均值在4.0 Mg.M-2和12.5 Mg.M-2之间.不同城市土壤尘和路面尘PM2.5中浓度最高的元素都是SI、CA、Al、fE和k,路面尘中CA元素明显富集,而主要人为来源的重金属元素如Cu、Pb、zn、Cr在路面尘PM2.5中的浓度显著高于土壤尘.漳州城区路面尘PM2.5中二次离子nH4+、nO3-和SO24-的含量明显高于其它地区,厦门、漳州和泉州城区路面尘PM2.5中Mg2+和CA2+之间都存在显著的正相关关系.四城市路面尘中有机碳(OC)的含量均高于济南、石家庄以及北京地面扬尘OC的含量,元素碳(EC)的含量均低于北京地区路面扬尘EC的含量.泉州和莆田两地OC和EC的相关性较好,说明路面尘中OC和EC有相同或相似的来源.质量平衡结果显示泉州和莆田路面尘PM2.5中含量最高的是土壤尘,其次为有机物.按化学组成特征对路面尘PM2.5进行聚类解析,得到受大气沉降影响、受土壤尘影响、受大气沉降和土壤尘共同作用以及受土壤尘和建筑尘共同作用4类样品.A total of 57 road dust and 16 urban soil samples were collected from four cities,Xiamen,Zhangzhou,Quanzhou and Putian in Fujian Province,China.Twenty-six elements,eight water soluble ions,organic carbon and elemental carbon in the fraction of particulate diameter less than 2.5 μm(PM2.5) derived through a suspension chamber were analyzed.The average loading of road dust with diameter less than 100 μm in the four cities ranged from 6.99 g·m-2 to 10.11 g·m-2,while the loading of PM2.5 ranged from 4.0 mg·m-2 to 12.5 mg·m-2.Both the soil and road dust samples were characterized with much higher concentrations of Si,Ca,Al,Fe and K.But for the anthropogenic elements such as Cu,Pb,Zn,Cr and Ti,much lower levels were found in the soil PM2.5 than those in the road dust PM2.5.Significantly higher levels of NH+4,NO-3 and SO2-4 were found in the road dust PM2.5 from Zhangzhou in comparison with those from other cities in this study.The calcium ion(Ca2+) content was significantly positively correlated with the Mg2+ content in the road dust PM2.5 from Xiamen,Zhangzhou and Quanzhou.The levels of organic carbon(OC) in the road dust PM2.5 in these four cities were higher than those reported in Ji'nan,Shijiazhuang and Beijing while the levels of elemental carbon(EC) were all lower than those in the urban road dust from Beijing,Significant positive correlation between EC and OC was found in samples from Quanzhou and Putian,suggesting the same and/or similar sources.The result of mass balance indicated that higher percentage compositions were soil and OM in both Quanzhou and Putian.Based on the cluster analysis,the 57 road dust samples were divided into four types: influenced by atmospheric deposition,influenced by soil dust,influenced by atmospheric deposition and soil dust,and influenced by soil and construction dust.国家自然科学基金项目(40971257;41171365); 环境保护公益性行业科研专项(201009004); 福建省自然科学基金计划项目(2009J05106

Establishment of air pollutant emission inventory in the West Coast of Taiwan Strait

以2009年为基准年,结合污染源普查数据、统计年鉴及工业活动、居民生活等多个方面对海峡西岸经济区包括SO2、nOX、PM2.5、VOCS和nH3在内的大气污染物的排放量进行了估算,建立了海西区大气污染物排放清单.结果发现,上述5类污染物基准年的排放量分别为40.67x104、55.84x104、50.57x104、152.26x104和26.18x104T.其中,SO2、nOX及PM2.5的排放主要来自电厂,占排放总量的比例分别为25.58%、34.89%和38.75%;VOCS和nH3的主要排放源分别来自植被排放和养殖业,其贡献量分别为49.12%和47.07%.采用gIS对排放清单进行网格化处理,得出SO2、nOX及PM2.5的高排放强度区域与固定源的空间分布较为一致.此外,结合国家和地方“十二五“发展规划,采用情景分析方法估算了2015年海西区大气污染物的排放清单.与基准年相比,SO2、nOX和nH3的排放量呈下降趋势,PM2.5和VOCS的排放量呈大幅度增加.基准年排放清单的不确定性分析显示,VOCS排放估算的不确定度最大,为225%.The emission inventories of SO2,NOx,PM2.5,VOCsand NH3 in the Western Taiwan Straits Economic Zone in the base year of 2009 were established based on the pollution source census,statistical yearbooks,industrial activities and residential activities.The total emissions of SO2,NOx,PM2.5,VOCs and NH3 were estimated to be 40.67×104,55.84×104,50.57×104,152.26×104and 26.18×104t,respectively.The power plants were the most important source and contributed to 25.58%,34.89% and 38.75% of the total emissions of SO2,NOxand PM2.5,respectively.However,the major source of VOCs and NH3 was vegetation and livestock breeding,which contributed to 49.12% and 47.07% of the total,respectively.The relative high emission areas of SO2,NOxand PM2.5were consistent with the locations of stationary sources based on GIS gridding techniques.In addition,the emission inventories in the year of 2015 were calculated using scenario analysis method based on the national and regional 12thFive-Year Plans.The emissions of SO2,NOx,and NH3 showed a slight decrease while the emissions of PM2.5and VOCs increase significantly(around 24.18% and 74.42%,respectively) in 2015,as compared to those in 2009.The estimate of VOCs had the highest uncertainty of around 225%.环境保护公益性行业科研专项(No.201009004); 厦门大学山海基金(No.2013SH011)~