Mangrove Wetlands:Distribution,Species Composition and Protection in China

红树林作为重要的海岸湿地类型之一，具有极高的生态系统服务价值。过去的50年中，中国红树林曾遭到极大的破坏。本文简要介绍了世界红树林分布现状，对中国红树林的分布、面积及红树植物种类组成进行详细叙述，并就红树植物分类体系进行讨论，认为中国红树植物种类应为38种，其中真红树植物13科15属27种，半红树植物有9科11属11种；对中国红树林的保护现状进行分析总结，以期为红树林的研究和管理提供参考。As one of the important coastal wetland,mangroves have a high value of ecosystem services.Over the past50years,China mangroves had been greatly damaged.The state of the world mangrove distribution was briefly described,and distribution and plant species composition of China mangrove were described in detail.Mangrove species classification system in China was discussed:Chinese mangrove plant species should be considered38species,including true mangrove species13families and27species,semi-mangrove plants11species in9families.Mangrove conservation status in China was analyzed in order to provide reference for the research and management of mangroves.基金项目:海洋公益性行业科研专项(201305021-2

Medium Optimization of Astaxanthin by Oceanic Red Yeast

为了提高海洋红酵母发酵虾青素的产量水平,对海洋红酵母的培养基成分进行了初步研究。试验结果表明,海洋红酵母能利用葡萄糖、淀粉水解糖、糖蜜等多种碳源,用淀粉水解糖为碳源培养海洋红酵母所获得的虾青素体积产率最大;用牛肉膏为氮源有利于提高海洋红酵母的生物量,以(NH4)2SO4、NH4Cl和蛋白胨为氮源有利于提高海洋红酵母的虾青素体积产率,用KNO3、草酸铵、蛋白胨、尿素有利于提高海洋红酵母的虾青素细胞产率;在海洋红酵母的培养基中添加Mn2+、Cd2+、Zn2+、Fe2+能增加生物量,添加Zn2+、Fe3+、Mn2+能增加海洋红酵母的虾青素体积产率,添加Fe3+能提高海洋红酵母的虾青素细胞产率。In order to improve the production level of astaxanthin by oceanic red yeast(ORY),the ingredients of medium for it were studied.The results of experiment showed that ORY could utilize many kinds of carbon sources such as glucose,starch hydrolyzed sugar(SHS),and molasses etc.However,volume productivity of astaxanthin was the biggest among these sugars when using SHS.Using beef extract as nitrogen source is helpful to enhance biomass of ORY, while(NH4)2SO4,NH4Cl and peptone were conducive to improve the ORY volume productivity of astaxanthin.In addition,KNO3,ammonium oxalate,peptone,and urea were conducive to improve the cellular productivity of astaxanthin.Adding Mn2+,Cd2+,Zn2+,and Fe2+ to the ORY medium,could increase the biomass.Adding Zn2+,Fe2+,and Mn2+ could increase the ORY volume productivity of astaxanthin.And adding Fe2+ could increase the ORY cellular productivity of the astaxanthin.福建省重点科技项目(2006H0033);; 厦门市科技项目(B04066

丙型肝炎病毒包膜蛋白E2的原核表达及鉴定

【目的】构建丙型肝炎病毒（HCV）包膜蛋白E2基因的重组原核表达质粒，并获得E2蛋白的高效表达。【方法】通过RT-PCR法从HCV RNA阳性的血清标本中扩增出HCVE2区基因595bp，PCR产物分别经BamHⅠ和Hind Ⅲ双酶切后连接到经同样酶切的原核表达载体PET22b（＋）上，转化大肠杆菌DH5α菌株，获得阳性重组质粒PETB，阳性质粒转化BL21（DE3），IPTG诱导表达，表达产物经SDS-PAGE和Westemblot鉴定。【结果】成功地克隆了HCVE2区基因，构建了其原核表达质粒，并在BL21（DE3）菌中表达HCVE2重组蛋白，Western blot显示表达蛋白具有抗原性。【结论】HCVE2重组蛋白的表达和鉴定为进一步了解HCV糖蛋白E2的功能及其与CD81二者的相互关系打下基础

CVI B-C基体改性2D C/SiC在低温湿氧中的自愈合行为

针对C/SiC低温氧化易失效的不足,研究了CVI B-C基体改性2D C/SiC在700℃湿氧中100MPa下加载至60h的氧化行为,利用SEM和TEM观察了改性材料不同服役时间的微结构特征,揭示了演变规律.研究表明,CVI B-C基体改性使C/SiC低温抗氧化能力显著提升.基体裂纹及其在应力加载下的开裂均为氧化气体提供进入通道,而后可被B-C氧化产物B2O3封填,抑制内部C消耗.CVI B-C与其氧化产物一同参与缺陷愈合.在60h内,B-C改性层愈合能力尚未完全发挥,可服役更长时间

大仓鼠背毛和腹毛红外光谱差异

为了探究通过被毛红外光谱特征进行啮齿目（Rodentia）动物种类鉴定的可行性，使用傅里叶红外光谱（FT-IR）及其二阶导数谱（SD-IR）对大仓鼠（Tscherskia triton）背毛和腹毛进行检测与分析。结果表明：大仓鼠的背毛和腹毛均能反映出该物种的特征性成分，背毛和腹毛的红外图谱基本一致，均在621、679、782、846、1562、1637 cm-1附近有明显的吸收峰形成，在3415、3470 cm-1均有明显吸收峰出现，形成W形图谱；二阶导数谱也基本相同，均在683、703、776、786、854 cm-1有明显的吸收峰。尽管存在这些相似性，但红外图谱和二阶导数谱也能明显地反映出背毛和腹毛的特定差异，腹毛吸收峰的峰面积和峰强明显比背毛的大。在红外图谱中，845~848 cm-1和1426~1439 cm-1处，二者出峰位置均有明显差异；在700~727 cm-1，二者的峰形有较大差异。二阶导数谱中，在621~645 cm-1处，腹毛形成2个W形图谱，背毛形成1个W形图谱；在707~718 cm-1处，背毛形成1个W形图谱，腹毛形成1个明显的单峰；在818~835 cm-1处，腹毛形成1个M形图谱，背毛形成2个M形图谱；背毛和腹毛分别在652~655、650~655 cm-1形成1个单峰；背毛在700 cm-1形成1个单峰，腹毛未形成明显的峰。研究认为，大仓鼠背毛和腹毛的红外光谱特征基本一致，但二阶导数谱能更好地反映出二者的差异。故红外光谱可用于大仓鼠不同部位被毛的识别与鉴定工作

design and implementation of trusted network system based on traffic characteristic

大多数可信网络系统使用的完整性度量技术仅能度量可执行文件而忽略了脚本文件,造成安全隐患。针对该问题,设计实现一种基于流量特征的可信网络系统,不仅对终端进行完整性度量,还利用终端网络流量的周期统计信息判断终端的完整性状态,由此保证脚本文件的可信性。在Linux上实现该系统,结果证明其能够快速检测出特定的脚本病毒。Most integrity measurement technologies of trusted network systems make use of focuses on executable files.In order to solve the problem that integrity measurement can not guarantee the credibility of the script files,this paper designs a trusted network system based on network traffic characteristics.Besides executing the integrity measurement,the system also computes the network traffic statistic information to judge the integrity state of the endpoint,which can be used to detect security threats when executing scripts.The system is implemented on Linux,and application results show that the system can detect some script viruses quickly