Tissue distribution analysis by rt - pcr and northern blot show that 17 - hsd1 was expressed exclusively in the ovary of tilapia while 17 - hsd3 was expressed exclusively in the testis , no signals were detectable in other tissues 17p一hsd3 . 17p一hsos )的克隆表达及酶活性鉴定验发现， 17p一hsdi的表达是卵巢特异性的，而17p一hsd3仅仅在精巢有表达。
Pyroelectric detectors are robust detectors which provide an ac type output signal on modulated radiation received . it is based on the pyroelectric effect . when there is no change of incidant radiation , no signal will be achieved 焦电型红外线人体感知器当所接收到的红外线的量有所改变时,即会输出一交流讯号;若所接收到的红外线的量未有所改变时,即没有输出
You see she is yet young ; you observe she possesses the ordinary form of childhood ; god has graciously given her the shape that he has given to all of us ; no signal deformity points her out as a marked character “你们瞧，她还很小。你们看到了，她的外貌与一般孩子没有什么两样，上帝仁慈地把赐与我们大家的外形，一样赐给了她，没有什么明显的残疾表明她是个特殊人物。
Whether the gene was transformed into the arabidopsis was confirmed by pcr - southern blotting , southern blotting and northern blotting . 1 . pcr - southern blotting showed that all kanamycin - tolerant plants had strong positive signals , and no signal was shown in wild type plants Pcr结果扩增出1 . 4kb的特异性条带，表明sod2已整合进拟南芥中， pcr - southern进一步证实了pcr结果的正确性。
Tom s excitement enabled him to keep awake until a pretty late hour , and he had good hopes of hearing huck s " maow , " and of having his treasure to astonish becky and the picnickers with , next day ; but he was disappointed . no signal came that night 汤姆也激动得很晚才睡着，他怀着极大的希望等着听哈克的“猫”叫，好在第二天野餐时拿出财宝给贝基和参加野餐的人一个惊喜，可他的如意算盘落了空，令他失望的是那天晚上根本没有任何“猫”叫声传来。
In nature , the optical fiber liquid height meter is one kind of the optical fiber fluid sensor , and it sufficiently utilizes the principle of the optical fiber sensor , making the examination field no signal of electricity , attaining completely an area no electricity examine , and making the safety supervision system essentially secure explosion proof 光纤液位计本质上是一种光纤液位传感器，它充分利用了光纤传感器的原理，使检测现场无电信号，完全做到罐区无电检测，使光纤传感安全监测系统本质安全防爆。
3 . northern analysis revealed the expression of sod2 mrna in t3 plants of several non - segregation transgenic lines while no signal was shown in wild type plants . several samples of transformants were self pollinated , and progenies from transformed and non - transformed plants ( controls ) were evaluated for salt tolerance Northern分析表明转基因植株均有杂交信号，野生型植株无明显信号，进一步说明sod2基因整合到拟南芥的基因组后已正常转录表达，由信号的强弱来看，表达量有明显的不同，可能与整合的外源基因的拷贝数相关。
Abstract : the nommiformity of solid state image sensor which degrades performance severely , even no signal can be detected must be corrected in the condition of present technology . in this paper , the cause of nonuniformity generation is analyzed . based on principle of ratio of performance to price and real time , one point and two point correction are used and their correction range are discussed . the hardware circuit sketch and result are presented 文摘:分析了非均匀性产生的主要原因，基于性能价格比和实时快速的原则，采用一点和两点法对固体图像传感器的非均匀性进行了校正并讨论了系统的校正范围，给出了用于实时校正的硬件电路框图和实验结果，取得了较满意的校正效果。
The results showed that nb14 and ny 13 had positive hybridization signals , but no signal in the parent - common wheat , and nb14 fragment only had positive signal hybridized with line24 . therefore , we can not deduced it is a responsive gene at present . much work still needed to confirm it 继续用ny13片段为探针，进行southern杂交分析，结果只与多枝赖草有杂交信号，且信号强，进一步证实该est是多枝赖草总基因组dna本身所具有的特异序列，杂交片段本身很可能是多枝赖草六侧协迫应答新基因之一或其一部分。
