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Although the intact-receptor based biosensors of the maxillary palp of cockroach Periplaneta Americana are not yet practical analytical devices at present. Yet, sensitive and selective responses to biomolecules involving amino acids and protein, as well as some simple substance such as salts and sugars have been firstly obtained. It is already evident that receptor based biosensors are enormously superior to isolated receptor biosensors in terms of response time and recovery times, thus, the intact receptor biosensor worth of further investigation and development.
总而言之,本论文首次从电生理信号上对美洲蜚蠊下颚须的化学响应进行研究,初步探讨了基于美洲蜚蠊下颚须的整合受体生物传感器的特性;发现了美洲蜚蠊下颚须能够整合其密集的感觉毛阵列对化学刺激的响应;得到了蜚蠊对氨基酸和蛋白质等生物分子以及简单物质如盐和糖等的敏感而具有选择性的响应信号,并发现了糖和蛋白质的特殊响应信号;表明了美洲蜚蠊下颚须是一种新型整合受体生物传感器的敏感材料,进一步深入地研究信号波形及其整合原理、探寻糖和蛋白质的特殊受体细胞等,对这一类型整合受体传感器的研究发展是很有意义的。
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A prediction model has been proposed to deal with threshold voltage shift as a function of 1MeV neutron flux and gate oxide thickness, and to deal with room-temperature annealing of threshold voltage shift induced-by 〓Coγ as a function of electric field and gate oxide thickness. The commonness and individuality of MOS device degradation between hot-carrier effect and ionizing radiation were investigated. The dependence of substrate current, gate current and threshold voltage shift due to hot-carrier on gate oxide thickness were simulated with MEDICI-2D simulator. The photocurrents of PN junction and bipolar transistor were studied. Their transient responses on varied bias voltages, pulse durations and absorbed doses were simulated. The influences of NPN base width on base and collector photocurrents were investigated. We also studied 1MeV neutron displacement damage in PN junction, and calculated reverse current leakage under the neutron flux of 2. 67×10〓 per square centimeter. 3 The study of nondestructive screening method for MOS radiation tolerance A theoretical and experimental study of nondestructive screening methods for radiation tolerance of nMOS and pMOS were firstly fulfilled. We determined the informative parameters pertinent to the method and proposed how to deal with experimental data and verify obtained results statistically, as well as make the required steps for nondestructive screening. Based on the experimental data of 180 samples of discrete pMOS devices, the relation between sample quantity and correlation coefficient, screening equation, and other significant results were obtained from the threshold voltage shifts of pre-and post-irradiation samples.
二、分立器件电离和位移辐射损伤响应研究在国内首次开展了电离辐射引起的氧化层阈值电压漂移和退火理论研究,编程计算了1MeV中子引起的MOS器件阈值电压漂移与中子通量及栅氧厚度的关系,计算了〓Coγ光子引起的阈值电压漂移及退火的时效曲线与纵向电场和栅氧厚度的关系等,对评估MOS型集成电路电离损伤和加固方法研究,以及论文中开展的MOSFETs无损筛选方法研究奠定了基础;分析了MOS器件热载流子损伤效应与辐射电离损伤效应之间的异同性,利用二维模拟软件MEDICI-2D模拟了衬底电流和栅电流,在不同栅氧厚度下随栅压的变化曲线,计算了热载流子效应造成的阈值电压漂移,研究结果对当前存在的以热载流子效应研究取代电离辐射损伤实验研究的设想,具有重要的参考价值;开展了PN结和双极晶体管电离光电流研究,计算了不同偏压、不同辐射脉宽和不同吸收剂量下PN结光电流的瞬时响应,计算了不同辐射脉宽下NPN晶体管基极电流和收集极电流的瞬时响应,以及基区宽度对NPN晶体管光电流的影响,研究结果对双极器件抗电离辐射损伤响应及加固方法研究具有重要意义;在国内首次开展了器件位移损伤的理论研究,分析了辐射产生的缺陷对电性能的影响,计算了注量为2.67×10〓cm〓的1MeV中子产生的缺陷对PN结反向电流的影响。
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Aiming at the dynamic performance of frequency tracker designed specifically for laser Doppler velocimeter, the analysis was accomplished and some results of the experiments are presented.
针对激光多普勒测速仪常用信号处理设备———频率跟踪器,采用实验方法分析了其动态响应特性及影响因素,发现其动态响应参数并不能全面反映其在实际测试中的动态响应能力,实际测试中的动态响应能力明显低于通常的估计。
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A control device (14) includes means for outputting a request signal to an electornic key (12) in response to the ON operation of a predetermined switch start switch (70 among a plurality of switches (winker switch, horn switch, etc.) arranged in the vicinity of a user who has sat on the driver seat of the vehicle (100B) request signal generation means (80, a transmission circuit (46), and a transmission antenna (72), means for detecting a response signal from the electronic key (12) a reception circuit (44 and response signal matching means (82), and monitoring means (84) for outputting a lock release instruction to a actuator (64) when the response signal shows that the request is from a regular user.
要约 一种控制装置(14)包括:响应安置在坐在车辆(100B)的驾驶员座位上的用户附近中的多个开关(方向灯开关、喇叭开关等)的预定开关启动开关(70的ON操作而将请求信号输出到电子密钥(12)的装置请求信号产生装置(80传输电路(46)和传输天线(72);用于检测来自电子密钥(12)的响应信号的装置接收电路(44、和响应信号匹配装置(82);以及用于当响应信号显示请求是来自正常的用户时将锁定释放指令输出到执行器(64)的监测装置(84)。
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MethodsBy means of orthogonally rotational combination design, microwave extraction mathematical simulation model was concluded by the linear regression analysis.
响应面法是采用多元二次回归方程来拟合因素与响应值之间的函数关系,通过对函数响应面和等高线的分析,能够精确地研究各因子与响应值之间的关系,寻求最优工艺参数,解决多变量问题的一种统计方法[3]。
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The simulated results were preparatorily validated by using two-point nonuniformity correction method which was based on the linear response model of infrared focal plane arrays.
用以线性响应模型为基础的非均匀性两点校正法对仿真结果进行了初步验证,仿真结果表明:校正以后非均匀性明显下降,但仍剩余的非均匀性与红外焦平面阵列的理想化响应模型以及基于各探测元间是互相独立不相关假设下的非线性响应模型相比,基于空间相关性的红外焦平面阵列非线性响应模型更为科学、客观,也更接近真实的红外焦平面探测器成像。
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As solenoid valve the key component in the electronic-control system, the essay focuses on certain solenoid valve construction and characteristics, and set the mathematics model, which used the Simulink to analyze the driving voltage, spring tension and mobile quality, and found that it is complicated on the influence of different factors on solenoid valve, one factor can accelerate the turning off response, but may slower turning on response.
由于电磁阀是电控喷油系统中的关键器件,因此本论文针对某型电磁阀的结构和特点,建立了数学模型。并运用Simulink软件对其进行了仿真研究,分析了驱动电压,回位弹簧预紧力以及运动件质量等对电磁阀响应特性的影响。研究发现影响电磁阀响应特性的因素是十分复杂的,一种因素往往在加速电磁阀关闭响应的同时却会延迟电磁阀开启的响应。
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Increasing the input noise may increase the signal-to-noise ratio of the output response V(t within the element's parameter region indicating that the periodic components of V increase as the input noise increases. The relationsip between the variation of the SNR of the V curve and the noise is similar to the that of the resonance.
结果表明:在一定的条件下,增大输入噪声的值不仅不降低输出响应信噪比;反而迅速增加输出响应的信噪比,使输出响应中周期信号的分量反而加强,而且输出响应的信噪比对于输入噪声的变化具有&共振&形状的曲线。
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The summary results are below:1. GUS expression under the driving of the BjCHI1 promoter (-1060/+17) was essentially undetectable in the young seedlings under normal growth conditions. GUS activity was first detected in the stigma of young flowers, peaked in the young siliques, and decreased when the siliques became older. No GUS expression was found in the mature siliques, seeds or root.2. The BjCHI1 promoter (-1060/+17) was inducible by NaCl, PEG, wounding and MeJA treatments. High levels of GUS expression were detected in the transgenic tobacco and Arabidopsis plants after wounding, NaCl, PEG, and MeJA treatment, indicating that the BjCHI1 promoter responses to both biotic and abiotic stresses.3. RT-PCR analysis confirmed that the expression of the BjCHI1 gene in B. juncea was inducible by PEG and NaCl.4. The transcription start site was determined by 5′-RACE, and was located at the 17th nucleotide upstream of the translation initiation codon of the BjCHI1 gene.5. A -805/+17 promoter fragment was enough to response to wounding and MeJA induction, which was proved in transgenic tobacco and Arabidopsis plants. The 397 bp region between -805 and -409 of the BjCHI1 promoter contains a cis-acting element that is essential for the wounding and MeJA inducibility.6. The -695/-620 region was necessary but not sufficient to confer MeJA-responsive expression. A T/G-box locates in -353 play an important role in the expression of the BjCHI1 gene in response to MeJA treatment. The 76 bp region is coupled with the T/G-box to confer full MeJA-inducible transcription of the BjCHI1 gene.
主要结果如下:1、利用转基因拟南芥植株分析表明,正常生长条件下,BjCHI1启动子(-1060/+17)驱动GUS基因主要在花柱中表达,幼嫩的荚也有表达,并随着果荚的成熟而减弱,成熟的果荚、种子和根没有显示GUS活性。2、BjCHI1启动子(-1060/+17)能驱动GUS基因在转基因烟草和拟南芥中响应伤害的诱导,转基因拟南芥的分析还证明BjCHI1启动子也受MeJA、NaCl和PEG的诱导,证明BjCHI1启动子是一个伤害、MeJA、NaCl和PEG等生物和非生物因素诱导启动子。3、RT-PCR进一步证明芥菜中BjCHI1基因也受NaCl和PEG的诱导表达。4、5′-RACE法鉴定了BjCHI1启动子的转录起始位点,位于翻译起始位点ATG上游第17个碱基A.5、转基因烟草和拟南芥分析证明,-805/+17的启动子片段足以响应伤害和MeJA的诱导,-805和-409之间397 bp的启动子片段含有对伤害和MeJA诱导必要的元件。6、本明烟叶片瞬时表达系统分析证明,一段76 bp的序列(-695/-620)对BjCHI1启动子响应MeJA的诱导是必要的,但不足以响应MeJA的诱导,位于-353的T/G-box也参与MeJA的诱导。76 bp的序列(-695/-620)与T/G-box协同起作用,赋予BjCHI1启动子MeJA诱导性。
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By comparison with responsive supply chain in three aspects,the paper brings to light that relativity advantage of RSC stems from the new industry paradigm ,and then puts forward it is the approach of improving the responsibility of ESC that remoulds ESC through the new industr.
市场环境复杂性的提高,使得适应于稳态环境的效率型供应链的需求响应性差的问题更加突出,本文通过其与响应型供应链的三方面对比,揭示出响应型供应链的相对优势实质上来自其代表的新产业模式趋势,并得出应用新产业模式改造效率型供应链作为其响应性问题的解决之道。
- 推荐网络例句
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In the United States, chronic alcoholism and hepatitis C are the most common ones.
在美国,慢性酒精中毒,肝炎是最常见的。
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If you have any questions, you can contact me anytime.
如果有任何问题,你可以随时联系我。
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Very pretty, but the airport looks more fascinating The other party wisecracked.
很漂亮,不过停机坪更迷人。那人俏皮地答道。