共生物

Under their theory, it is in these biofilms in the appendix, well positioned to avoid pathogens in the rest of the gut, that commensal bacteria take refuge.

按照他们的理论，正是这些阑尾中的生物薄膜给共栖菌提供了一个避难所，因为阑尾在人体内的有利位置使共栖菌避免受到其他肠道病原体的侵袭。

Through the purification and study of the North China type Permo-Carboniferous biostratigraphic units of Henan Province, 5 fusulinid and 4 conodont biostratigraphic units are collated and stipulated on the basis of the distribution of the fossils in the main section and the Stratigraphic Guide.

通过对河南省华北型石炭纪—二叠纪生物地层单位的清理与研究，根据和牙形石在主干剖面上的纵、横向分布规律，依据地层指南，共厘定出 5个类和 4个牙形石生物地层单位。

The crocic acid is used for living creature analysis realm, is the near red and outside fluorescence dyestuff that combines with the living creature member covalence at present.

现今克酮酸被用于生物分析领域，是与生物分子共价结合的近红外荧光染料。

Since most of the large molecules containing phosphorus element have double bonds, it is necessary to consider the special structures of double bonds in order to deal with these large systems more accurately. So, based on density functional theory and electronegativity equalization principle, applying a general atom-bond electronegativity equalization method , using separated program, through regression and least-squares optimization , the parameters of atoms and bonds in molecules are determined . By these parameters , the charge distributions and the energy of some molecules containing phosphorus element, especial the fragment of DNA, RNA, are calculated . The results are quite good.

由于这些含磷生物大分子体系都含有双键，为了明确的处理双键，进而更准确的解释带有双键和共轭双键的含磷生物大分子结构与性质的关系，我们以密度泛函理论~([1-4])和电负性均衡原理~([5-9])为基础，应用和开发原子-键电负性均衡方法中的σπ模型，利用最小二乘法，拟合确定了一些分子（含碳、氮、氧、氢以及磷等原子）的各种类型原子及化学键区域的参数，并利用上述参数计算了一些多聚核苷酸的电荷分布以及分子的总能量，进行了讨论，得到的结果可以和从头算相媲美。

The application of confocal and non-confocal optical path in microarray scanner is analyzed. The concept of CVR is briefly introduced.

着重分析了共聚焦光路与非共聚焦光路在生物芯片扫描仪中的应用特点，以及CVR技术指标。

The plant Quarantine Lab had intercepted more than 200 quarantine pests such as : Tilletia indica , Tilletia controversa , Bursaphelenchus xylophilus , sorghum halepense , Acanthoscelides obtectus , Sternochetes mangiferae , Bactrocera dorsalis , Coptoermes curvignathus for nearly 5000 batches ; The Animal Quanantine Lab had intercepted about 20 cow which had some pathogens evidence of infectious disease such as : bovine infectiouse rhinotracheitis , leukaemia bovum , paratuberculosis and so on ; The food microorganism lab had detected over 300 unqualified products such as Salm-Sury , Listeria monocytogenes , Mycobacterium paratuberculosis etc .

多年来，分中心各实验室切实履行严格把关的职责，植物检疫共截获大豆疫霉病菌、小麦印度腥黑穗病菌、小麦矮腥黑穗病菌、松材线虫、假高梁、菜豆象、芒果果核象甲、桔小实蝇、大家白蚁等国家禁止进境的危险性有害生物220 多种近10000 批次；动物检疫发现感染牛传染性鼻气管炎、牛白血病、副结核等传染病的疫牛20 多头；食品微生物检测共检测沙门、单增、副结核的不合格商品300 多批；分子生物学实验室为国内企业出具非转基因证书和不含有牛羊源成分证书50 余份，使相关的产品能够顺利出口到欧盟、韩国和日本等国。

And Homo Sapien fetal brain cDNA Library was used to screen PRL-3-interacting proteins. 3. Identification and bioinformatical analysis of CDH22, a candidate PRL-3-interacting protein Interaction between PRL-3 and CDH22, a candidate PRL-3- interacting protein was identified by GST-pull down assay, co-immunoprecipitation assay and co-localization analysis in vivo and in vitro.

PRL-3相互作用蛋白的鉴定及其功能的生物信息学分析运用基于蛋白质水平的谷胱甘肽-S-转移酶融合蛋白沉淀、免疫共沉淀和共定位分析等技术对酵母双杂交系统初步筛选的结果进行体内和体外的验证。

A review of river management history in various countries is used in this thesis to discuss the future development trends of river management and the relationship between river health and river management.Based on the characterization and assessment of river health, Five components of stream condition are presented in this thesis to characterize river health: water quality, aquatic life, physical form, hydrology and streamside zone. It is obtained by comparing the methods and criteria that have been developed by others and reviewing the river assessment practices in various countries. Accounting for the features of urbanization region in plain river network, an indicator system for river health assessment which provides scores for 5 subindices and 17 indicators is established. With almost 200 stream reaches in Shanghai as objective of study and Liwa stream and Zhangjiabang Creek as case study, the application of river health assessment in the planning, baseline survey and post-project appraisal of river management is explored by collecting historical literature and field monitoring. Consequently, some suggestions to improve river management effectiveness are presented from the angle of river health.

本文回顾河流管理漫长历程并指出当前国际发展趋势，进而辨析河流健康状况与河流管理的关系；以河流健康状况的表征和评价为核心，通过对国外RIVPACS、AUSRIVAS、IBI、RCE、ISC等河流健康状况评价方法的分析和比较，以及对美国、英国、澳大利亚、南非等国家河流健康状况评价实践的总结，尝试从理化参数、生物指标、形态结构、水文特征、河岸带状况5个方面全面表征河流健康状况；结合中国东部平原河网地区自身特点，通过评价原则、评价指标、评价标准、评价权重确定等步骤，初步构建了包含河流水文、河流形态、河岸带状况、河流水质以及河流生物5个一级指标(共17个指标)的河流健康状况评价指标体系；在此基础上，采用资料收集与现场实测相结合的方法，以上海近200条中心河道为研究对象，以丽娃河和张家浜为典型案例，分别就河流健康状况在河流管理规划、现状评估以及后评估中的应用进行实证研究，并尝试探讨如何从这三个阶段利用河流健康状况评估改进河流管理的对策。

In this thesis, rat-tails were used as experiment objects, there are 40 slices including transverse and longitudinal, HE-dyed and undyed. Excited by femtosecond laser, the changes of backward SHG and TPEF versus sample preparation, excitation wavelength, excitation power, penetration depth and so on were observed by two-photon laser scanning confocal microscope, effect factors of backward SHG and TPEF and differences of both were discussed and compared, and related comments were also presented.

以鼠尾组织作为实验对象，共40个切片，分为横向和纵向、HE染色和未染色四组，采用飞秒激光器作为激发光，用双光于激光扫描共焦显微镜(two-photon laser scanning confocal microscope， TPLSCM)观察和分析了样品在不同的制备方式、激发波长、激发功率、扫描深度等条件下的背向SHG和TPEF的变化曲线，讨论和比较了生物组织的背向SHG和TPEF的影响因素以及二者之间的异同，并尝试对实验现象做出了一定的解释。

To localize the functional positions of biomolecules in ciliates cell, we constructed a macronuclear artificial chromosome containing a gene encoding red fluorescence protein based on the structural characteristics of ciliates chromosome.

为了能够有效地分析生物大分子在该细胞中的功能作用位点，本研究根据该生物染色体结构的特征，构建了含有红色荧光蛋白的大核人工染色体EoMAC_R，并与之前构建的含绿色荧光的大核染色体EoMAC_G一起，对蛋白质合成终止有关的3个重要因子核糖体大亚基蛋白L11、多肽链释放因子eRF1和eRF3在八肋游仆虫细胞中进行了荧光共定位分析。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。