株

The homology of the nucleotide sequences and genetic variation analysis of NDV strains suggested that mere were obvious divergence in gene lever among NDV vaccine strains and epizootic strains isolated from different areas and different ages.The divergence may have effect on amino acid and structure and function of protein in some extent and lead to difference of immunogenicity ,which was one of reason being difficult in preventing from ND.

通过对NDV F基因核苷酸序列同源性比较及遗传变异分析发现：我国不同年代、不同地区分离的NDV毒株与疫苗毒株之间在基因水平上存在较大差异，这种差异对氨基酸及蛋白质的结构和功能可能会有一定影响，而NDVF蛋白的差异同时也造成免疫原性的差异，这很可能是新城疫的免疫防治十分困难的原因之一。

We suggest we should immune epizootiology Newcastle disease virus vaccine after immune tradition Newcastle disease virus vaccine, this can enhances the immunity effect, and reduces the rate.

建议种鸡群ND免疫接种时在使用传统毒株疫苗的基础上，进行ND流行毒株灭活疫苗的加强免疫，以提高免疫效果，降低ND的发生率。

The basic characteristics of the whole process were gained. When the seedling falling out of the tube feet, the difference of the time interval between 2 neighboring seedlings wasn't notable, and the difference of the time interval of 2 neighboring seedlings wasn't notable and the agricultural time was not special notable. These results showed that the uniformity of the pneumatic ordered throwing transplantation was excellent and could meet the demands from design and agriculture; Upstanding state was primary as the seedling falling out of the tube feet, it showed that the seedling could keep erective preferably when the seedling falling to the field.

结果表明：钵体苗从导苗管管脚中落出时，相邻2株钵体苗落出时的时间间隔差异不显著，从左中右3个管脚落山的相邻2株钵体苗的时间间隔与农艺要求的时间差异极不显著，说明气力有序抛秧均匀性好，能满足设计要求和农艺要求；钵体苗从导苗管管脚落出时以直立状态为主，表明气力有序抛秧的钵体苗落入田间时能较好地保持直立。

Yeast is one of the main ergosterol producers. Therefore, the ergosterol content should be increased as high as possible for application in ergosterol production.

野生型的酵母菌株在细胞生长和甾醇合成之间常存在一定的矛盾，因此通过自然筛选很难获得生长良好和麦角甾醇含量高的菌株。

Spherical yeast OS-194 is an only erythritol production osmophilic yeast. 10 percent of glucose ,0.5 g/dL for yeast extract and 0.1 g/dL for urea were the best components of medium,which obtained high erythritol yield by OS-194.The optimum culture conditions were 35℃,150 rpm,and 4 d.

球拟酵母OS-194是一株单产赤藓糖醇的耐高渗酵母，该菌株高产赤藓糖醇的最佳培养基配方为：葡萄糖10 g/dL，酵母膏0.5 g/dL，尿素0.1 g/dL。

The results showed that with the normal dosage 60g/hm2, inhibiting rate of the plant height and weight of Taiyu 2, Jinzhenzhu, Taiyu 15, Zinuo and other three breeds are beyond 40% and 30%, and it is obvious that plant growing is inhibited, the leaves etiolate and new leaves twist severely and couldn't grow normally. Inhibiting rate of the plant height of Ziyu 2, Taiyu 2, Liaoyu 18, Ludan 50, Zhengdan 958 and some other varieties are between 30.6% and 38.1%, the sensitivity of these varieties are lower and the plant modalities are not influenced bigger; in addition, Nongda 108, Nongda 2008, Xinyu 958 and Taiyu 12 grow healthy, the resistance to nicosulfuron are higher compared with other varieties.

温室盆栽测定结果表明，在烟嘧磺隆大田常规用量60g ai/hm2下，各品种对药剂的敏感性差异显著，泰玉2号、金珍珠、泰玉15号、紫糯等7个品种对烟嘧磺隆表现较为敏感，株高抑制率均在40.4%以上，鲜重抑制率在31.37%以上，表现为植株生长受到抑制，叶片黄化，新叶牛尾状扭曲不能正常抽出；淄玉2号、泰玉2号、聊玉18、鲁单50、鲁原单14、郑单958等品种的株高抑制率在30.6%～38.1%，敏感性略低；而农大2008、农大108、鑫玉958和泰玉12号生长正常，耐药性相对较高，无明显药害症状。

When grown in the light and with nutrition as the limiting factor, the wild type was less influenced due to its capability of photosynthesis and quickly became predominant over the mutant that has no photosynthetic apparatus. However, when grown heterotrophically in the dark, the mutant remained less competitive than the wild type, showing that the euglenoid proplastids play a role in competition.

在光照情况下，当营养物质成为限制因子时，由于具有光合能力野生型生长受影响较小，在与没有光合器的突变株的竞争中很快地显示出优势；在黑暗中二者均只能以异养方式生长，但突变株仍然处于竞争弱势，显示原质体结构对于生存竞争的作用。

Application of McAbs: the ascites of McAb A_12B_4 were purified with euglobulin precipitation, and tagged with colloidal golds, then the immuno-gold filtration assay was developed to examine avian influenza virus. The results showed that the positive outcome was gained with avian H_9, H_7 and H_5 influenza virus.

单抗的初步应用：A1284株腹水经优球蛋白沉淀法纯化后与胶体金标记，应用于胶体金试纸条检测试验，金标A1284株单抗与H9、H7、H5三种亚型禽流感病毒反应结果呈阳性。

The dominant male sterility was expressed normally in the new Taigu genic sterile wheat carrying the intergenomically translocated Ms2, and the female fertility mechanism in its male sterile plants was normal as well. Observation of the chromosome configuration at meiosis of pollen mother cells of the young ears of the sterile plants showed that they were euploid plants (2n=42). No configurations different from those of the Taigu geneic sterility gene located at the original locus were noticed of the Ms2 intergenomically translocated back into the common wheat.

所获携带易组Ms2基因的新型太谷核不育小麦其显性雄性不育特性表达正常，且雄性不育株的雌性可育机制正常，对不育株幼穗花粉母细胞减数分裂期染色体构型的观察可见其为整倍体(2n=42)，尚未发现回归普通小麦的易组太谷核不育基因与原位点的太谷核不育基因有不同的表型。

The production of subtilisin-like protease and total extracellular protease from different subcultures of Beauveria bassiana was investigated in cicada exuviae and maggot cuticle liquid culture.

以蝉蜕、蝇蛆壳两种培养基培养球孢白僵菌不同世代菌株，分析其类枯草杆菌蛋白酶（Pr1）和总胞外蛋白酶的产生水平及其与菌株毒力的相关性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。