诱变

Strain 9813 of Alcaligenes eutrophus derived by physical mutation can ferment fructose-glucose syrup to produce PHB.

经过物理诱变得到能利用果葡糖浆生产PHB的真养产碱杆菌9813，摇瓶发酵的适宜条件是：初糖浓度为2.5％～3.0％，硫酸铵浓度为0.3％，发酵时间48h，PHB浓度为14.7～14.8g·L〓。

There are many studies on Bombyx mandarina and Antheraea yamamai in or out of China, but no paper about them that were irradiated by He-Ne laser is found yet.

有关野桑蚕和天蚕的研究，国内外的报道较多，而激光辐射对野桑蚕和天蚕的诱变研究至今未见报道。

In this study, using physiological and biochemical methods and molecular biology technology analyzed the inductive biological effects of Bombyx mandarina and Antheraea yamamai which were irradiated by He-Ne laser for the first time. The results were obtained as follows.

本研究首次采用He-Ne激光对野桑蚕、天蚕进行诱发，运用生理、生化方法和分子生物学技术，研究其诱变生物学效应，获得如下结果。

In addition ,an asporogenous mutant G5was obtained from Bs C3-41 wild strain ,in which the formation of the spore was blocked at the stage III of the sporulation course .

此外，还诱变筛选到一株稳定遗传的Bs无芽孢突变株G5，其芽孢形成阻断于第三期，能够形成晶体，二元素表达量较高，可作为后选的工程菌受体。

Through three-step continual EMS mutation, the adenine autotrophy strain(Ml-3) and the adenine-requiring revertant strain(M2-8) were screened successively, and the resistant strain(M3-20) to ammonium ion variant was further screened.

将MY-1经连续3次EMS诱变，依次选育富含核黄素的腺嘌呤营养缺陷型菌株(M1-3)和腺嘌呤缺陷型的回复突变株(M2-8)。

The contents of Mn, Cu, Fe, Zn in the leave, flower, seed of Impatiens balsamina induced by space flight are determined by flame atomic absorption spectrometry. The measure parameters for FAAS are optimized.

采用火焰原子吸收分光光度法测定了航天诱变凤仙花的茎、叶、花、种子中Mn、Cu、Fe、Zn四种微量元素的含量，优化了原子吸收分光光度法测定参数。

Several SP2 mutant plants were obtained from induced Impatiens balsamina L.seeds by space flight,and their blades were investigated in this paper.The writer calculated the K-S statistics and the levene statistics,also made use of SPSS 11.5 to have the independent-samples t test and the univariate in the prerequisite of some fundamental presumptions.

对航天诱变凤仙花SP2代若干单株的叶片长度和宽度进行了统计分析，对试验数据进行了柯尔莫哥罗夫-斯米尔诺夫检验，计算了样本的列文统计量，并采用Spss 11.5统计分析软件检验了基本假设的满足条件，进行了独立样本t检验。

Induced by spaceflight ; impatiens balsamina ; FAAS ; trace element

航天诱变；凤仙花；原子吸收分光光度法；微量元素

For example, benzidine and β-naphthalene amine, actually though its importance for the syntheses of dyes, especially azo dyes, have been banned for the sake of their strong carcinogenic activities to cause professional bladder cancer.

例如，联苯胺和β-萘胺曾经是非常重要的染料中间体，它们能导致职业性膀胱癌而被禁用，因此非诱变性芳胺的研究，特别是联苯胺和β-萘胺的代用研究，已经引起染料学科的广泛关注。

One was the pqsA' positive expression plasmid constructed by cloning the pqsA'-lacZ fusion digested from pYHP441 into miniCTX-1, whose sequence was then integrated into wild type PAO-1 chromosome by biparental mating procedure. The other was pqsA-E operon knock-out plasmid whose sequence between pqsD and pqsE operon was inserted by tetracycline cassette by the site specific insertion mutagenesis strategy and the mutant constructed by biparental mating of S17-1 that harbored the plasmid and pqsA' positive expression mutant.

一种是酶切质粒pYHP441获得pqsA'-lacZ片段后，亚克隆入质粒miniCTX-1中，构建成PqsA'的阳性表达质粒，随后将构建的质粒，通过双亲交配过程整合入野生型铜绿假单胞菌株PAO-1染色体组中；另一种是通过点特异插入诱变策略，将四环素基因盒插入启动子pqsD和pqsE之间，构建的阴性质粒转化入大肠杆菌S17-1株后，和上述pqsA'阳性表达突变株进行双亲交配过程。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。