株

One ESBLS-producing strains was detected in Pseudomonas aeruginose,Enteric aerogenes and Citrobacter,respectively.

由于ESBLS阳性株对临床常用抗生素的耐药率远远高于ESBLS阴性株，使临床治疗面临极大的困难，必须引起临床医生和临床微生物室的重视。

A mutant,designated as UV-3,was selected from wild-type Enterobacter aerogenes 10293 by application of UV irradiation in combination with cultivation in high glucose medium,leucine medium and diacetyl medium.

以产气肠杆菌(Enterobacter aerogenes，CICC 10293)为出发菌株，采用紫外线诱变，并结合亮氨酸平皿和丁二酮平皿筛选方法，获得耐高浓度底物-葡萄糖的高产丁二酮突变菌株，命名为UV-3。

Conclution: Aerogenesis variety strains type 14 are commonly exist in shandong province, they have high relevancy with E. coli O32 phenotype traits such as biochemical nature and antigen structure, which indicates we should pay attention to differential diagnosis on these two strains.

C14型产气变种菌株在我省普遍存在。C14型产气变种与大肠杆菌O32的生化特性和抗原结构等表型特性具有高度的相关性，提示在检验工作中应注重对两种菌株的鉴别诊断。

It was identified that the nif gene for aerogenic P. agglomerans strain waslocated on plasmid while for anaerogenic strains were located on chromosomes usingKlebsiella pneumoniae nifHDK as probe.

用nifHDK为探针进行Southern杂交证明固氮成团泛菌产气型的菌株固氮基因定位在质粒上，而不产气型菌株固氮基因定位在染色体上。

The paper introduced the method and steps of screening alcaligenes from active sluge.Analcaligenes strain which can be used for praducing PHB has heen got.

介绍了从活性污泥中筛选产碱杆菌的方法和步骤，并得到一株产PHB的菌株。

It showed better phenol degrading rate at pH 6.5~7.5, 28~32℃, rotation speed bigger than 160 r/min, the concentration of 600mg/L phenol as the substrate. It was identified as Alcaligenes sp.

对该菌株的降解性能研究表明：该菌株具有较强的苯酚降解能力，在温度为28~32℃，pH值为6.5~7.5，摇床振荡速度大于160r/min，苯酚浓度为600mg/L的条件下，单位时间内对苯酚的降解能力最强。

Our previous studies demonstrated that the IBV was easy broken, and the virus coronal was easy lost When IBV was isolated from the allantoic fluids of eggs, so It was hard to harvest the whole IBV antigen.

克隆了IBV M41毒株N基因和IBV H52毒株S1基因，对它们进行了序列测定和与GenBank中收录的IBV N基因、S1基因序列进行了比较分析，并用Clustal X和Mega软件将N基因、S1基因与公布的标准序列做同源性比较和系统进化分析。

The indirect ELISA developed by McAb/C6-H8 was used to screen the allantoic fluid of NDV, and the results showed that McAb/C6/H8 react only with NDV Genotype VI strains, while not with the other strains.

用McAb／C6-H8建立的间接ELISA法检测病毒的尿囊液，结果表明：McAb／C6-H8仅与基因Ⅵ型的毒株反应，而不与其它毒株进行反应。

Thirdly, we also examine the effect of these extracts on maize seed germination rate, maize seeding height and fresh weight, and the results show that three extracts are safe to maize at the concentration of 1:20, with a inhibit rate under 4 %.We further identified and purified organic acids, alkaloids hydroxybenzenes and neutral materials from extract and examined their effects on Amaranthus retroflexus L. seeds.

实验结果表明在干样：水为1：50以内，这三种向日葵的叶片提取液对反枝苋种子萌发和幼苗株高、鲜重及出叶数的抑制效果都非常显著；随着提取液浓度的下降抑制作用也呈明显的下降趋势；通过实验数据比较，这三种向日葵叶片提取液对反枝苋种子萌发抑制和对反枝苋幼苗株高、鲜重及出叶数的抑制效果略有差异。

The analysis of the mutants of amrA and amkA showed that the production of rifamycin SV had decreased about 10%-20%.

用双交换法在地中海拟无枝菌酸菌U32染色体上插入阿泊拉霉素抗性基因，成功地构建了了amrA，amkA和amrB基因的突变株，其中amrA，amkA基因突变株的菌丝形态与野生型U32之间有较明显的差别，在菌丝的末端形成卷曲或弯曲。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。