Abstract : directing against the problem on detection of chemical polluting gas , i . e , butyl acetate , without special - purpose inducer , the paper makes an introduction of a new method with which both the detecting and the warning of chemical polluting gas , i . e , butyl acetate can be realized by using no special - purpose inducer during bulb production 文摘:针对化学污染气体醋酸丁酯的检测尚无专用传感器的问题，介绍了如何利用非专用传感器实现灯泡生产中化学污染气体醋酸丁酯的检测与预警的新方法。
From the result of electrophoresis , it known that the different components of the enzyme system were expressed cooperatively . in order to study the essence of cellualase induction of different carbon sources , the extracellular , plasm - membrane - bound and intracellular cellulases were made to transform different soluble inducers , and the productions were analyzed by gc chromatogram . the results supported the assumption that cellobiose acted as the direct inducer or the metabolic analogue , b - gentiobiose from cellobiose acted as the true inducer through different metabolism ways in different strains 制备细胞膜外、细胞膜、细胞内纤维素酶，用定位于这三部位的纤维素酶分别转化底物，然后进行气相色谱定性分析，从而探讨了不同碳源之间的诱导本质，结果认为不可溶的胞外纤维素以纤维二糖为桥梁，遵循不同的代谢途径，直接或间接地诱导了两株不同真菌纤维素酶的合成。
In order to use the responding ability to the inducers of pr - la promoter , two fragments , ip1 ( 900 bp ) and ips ( 603 bp ) were cloned from tobacco genomic dna by polymerase chain reaction ( pcr ) with primers designed according to the sequence reported in genbank . sequence analysis of the amplified 900 bp fragment indicated that the cloned sequence had 99 % of homology to the known sequence . its transcription start site , tata box and consensus sequence " tgac " conserved in pr genes were identical to those of pr - la promoter 根据pr - 1a基因的报道序列，设计两对引物，以烟草基因组为模板，通过pcr扩增得到900bp ( ipl )和603bp ( ips )两个目标片段，序列测定表明克隆的启动子与报道序列具有99的同源性，转录起始位点、 tatabox及保守序列tgac与报道序列均完全相同。
The paper begins with the discussion of the operating principle and function of the screw inducer , special element of the pump , and then gives the definition and relationship of the parameters and the curve function of the inducer as well , which is of great importance to data analyzing and pump - manufacturing 论文中首先分析了该泵的特殊部件? ?螺旋诱导轮的原理和作用，讨论了叶轮参数的定义、参数之间的相互关系和叶片的曲线与曲面方程，这无论对叶轮中的数值分析还是叶轮的设计制造都是十分重要的。
It is the optimal time for subjecting creatine to the medium when cultured to 12h and the concentration of creatine was 0 . 75 % . creatine , sarcosine and choline chloride could induce the creatinase production and creatine was the optimal inducer , but creatinine and urea could not induce the creatinase production . 3 purification of creatinase the process of creatinase purification was performed as follows : first the enzyme was completely precipitated in the range of 40 - 80 % of saturation with ammonia sulfate fraction precipitation 最佳氮源为玉米浆和蛋白胨，最佳比例为2 ： 3 ，最佳浓度为1 . 6 ；加入其它碳源时有助于菌株稳定产酶； 100ml摇瓶的最佳装液量为15ml ；肌酸、肌氨酸和氯化胆碱都能诱导菌株产酶，其中肌酸诱导产酶的效果最好，而肌酐和尿素不能诱导菌株产酶；诱导物肌酸的最适加入时间为接种培养12小时后，最适加入量为0 . 75 。
The engineered strain ehd - yz26 / e . coli bl21 ( de3 ) was incubated at 30 for 10 hrs without adding any inducers . the results show that the target product is soluble and active , which account for about 20 % compared with the total proteins in cells , and the enzymatic activity reaches 13 u / ml that is about 13 folds compared with the activity of strain yz - 26 Colibl21 ( de3 )中30生长10hrs ，在不需添加任何诱导剂的情况下可获得可溶性表达，目的蛋白的表达量约占总菌蛋白的20 ，其酶活力为13u ml ，约是原始菌株的d -海因酶表观活性的13倍。
Egg in diapause or not : logit ( p ) = - 41 . 832 + 1 . 422x1 ( sea - water temperature ) + 0 . 509x2 ( photoperiod ) ; female laying diapause eggs or not : logit ( p ) = - 89 . 001 + 6 . 611x ( photoperiod ) the former reflected the effect of environmental conditions on the amount of diapause eggs of this species in xiamen waters , and it is important to study the population dynamics of this species in this area ; while the latter reflected the effect of envi ronmental conditions on inducing the female of this species to lay diapause eggs , and it is important to research the diapause inducers of this species in this area and the physiological mechanism of diapause 卵是否滞育： logit ( p ) = - 41 . 832 + 1 . 422x _ 1 (海水温度) + 0 . 509x _ 2 (日照时间) ；雌体是否产滞育卵： logit ( p ) = - 89 . 001 + 6 . 611x (日照时间) 。前者反映的是海区环境对整个厦门海区该种类滞育卵多寡的影响，对于研究本海区该种类的种群动力学有着重要意义；后者反映的是海区环境对该种类雌体产滞育卵的诱导作用，对于研究诱导该种类在本海区滞育的环境因子和生理机制具有重要意义。
Beside , effect of - carotene inducer ( ( 2 - diethylamino ) - ethyl - 4 - methylbenzyl - ether ) on the endogenous aba levels and drought tolerance of maize was studied . the experimental results showed that 0 . 1 % ( w / w ) inducer can lightly inhibit the aba biosynthesis of maize under normal conditions , while it can improve the aba levels obviously and the drought tolerance of maize under water stress 结果表明：浓度为0 . 1 ( w w )的2 ?二乙氨基乙基? 4 ?甲基苯基醚在正常条件下能够抑制玉米叶片内源aba的水平，但在干旱胁迫条件下能够显著增强干旱胁迫的aba积累水平，提高玉米的抗旱性能。
