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We have analyzed the interaction between lightwave and microwave in polymeric electrooptic modulators. Local poling structure was suggested to apply to the waveguide modulators, which will enhance the interaction between lightwave and microwave and improve the modulation efficiency considerably. In addition, instead of the coplanar electrode, the microstrip line was proposed to be the modulating electrode.

对有机聚合物电光波导调制器中光波与微波的相互作用进行了分析,提出利用局域极化结构可使在光波导中传播的光波与调制微波间的相互作用明显增强,与传统的使用平面电极的电光波导调制器进行了比较,调制效率增强一倍以上。

Compared to NMR techniques, the fluorometric analysis method revealed that there are not only obvious interactions of quinoline or its derivates and cucurbit [ 7 ] uril, but also interactions of quinoline or its derivates and cucurbit[6]uril or cucurbit[8]uril which can not be observed by using ^1H NMR technique.

与核磁共振技术比较,荧光光谱分析方法具有高灵敏性的特点,不仅可观察到喹啉及其衍生物与七元瓜环相互作用而引起的荧光性质变化;还能观察到它们与六元瓜环或八元瓜环相互作用所产生的变化,这是通常的NMR方法所不能实现的。

This paper is made up of three parts:summarizing about the study of disyllabic or polysyllabic;analysing for the important and difficult disyllabic or polysyllabic of the book;the statistical analysis for the result of second part to find the rule and characterristics.

通过对这些问题的研究,对医学文献的复音词做详尽剖析,与其他文献比较、归纳,总结汉语词汇变化的趋势与特点。希望为汉语史与中医学的研究提供可资借鉴的材料,也希冀汉语研究能将研究视野拓宽。

Compared with traditional method, the new system is more expansible and reusable, and the difficulty of system design is lowered, so that the quality of the design is improved.

与传统方法比较,面向对象方法使系统具有更好的可扩展性和可复用性,降低了系统设计的难度,提高了系统设计的质量。

In this paper Ⅰ successfully applied these methods to fault diagnosis, and presenting some new innovative machinery fault diagnosis method; First Ⅰ present a new gear wornout fault diagnosis method, this method use the vibration signal's time-frequency attribute and instantaneous phase undulation to accurately detect gear's fault, and by comparing with the traditional frequency domain analysis method, this method reveals that many nonlinear and nonstationary characteristic exist in gear's vibration, this tell us that if we use frequency domain analysis method without pay attention to the signal's characteristic, we could get wrong diagnostic result; Then Ⅰ present a new bearing fault diagnosis method, this method use ATVFD and Hilbert transform to do envelop demodulation,Ⅰ analyze the envelop with time-frequency method and find out that this method is more accurate then traditional method.Ⅰ also explain that the modulation of the fault to the carrier wave may also be non-stationary and nonlinear; Finally Ⅰ present a cylinder pressure measurement method of diesel engine by means of vibration, cylinder pressure is an important parameter of diesel engine fault diagnosis, the pressure measuring is simplified a lot by this method,Ⅰ also use the ATVFD and time-frequency analysis to realize it.

本文中将上述理论方法成功地应用到故障诊断中去,提出了几点创新性的诊断方法;提出了一种齿轮磨损故障诊断的新方法,该方法利用振动信号能量的时频域分布特征与瞬时相位波动特征可以进行精确的齿轮故障诊断,并通过与传统的频域诊断方法的比较,揭示出齿轮振动中存在的明显的非线性与非平稳特征,说明了不加选择地利用频域分析方法进行齿轮故障诊断很可能会得到错误的诊断结果;提出了一种轴承故障诊断的新方法,该方法利用ATVFD分解与Hilbert变换进行包络解调,并对解调得到的包络信号进行时频域分析,可以实现更加准确轴承故障诊断,说明了故障对载波信号的调制往往也是非平稳与非线性的;提出了一种利用振动信号进行柴油机汽缸内压力检测的新方法,柴油机汽缸压力的变化是柴油机故障诊断的重要参数,利用振动方法可大大简化汽缸压力的检测过程,该方法也是综合利用ATVFD分解与时频域分析方法实现的。

In comparison with bugle shaped nozzle, bifurcated nozzle downward jet angle 45°, cow-nose nozzle and three-hole nozzle, in all, the last two are better than the former and bifurcated nozzle downward jet angle 45 is better than bugle shaped nozzle; Cow-nose nozzle is helpful for guaranteeing the product's quality, in order to protect jet flow from eroding the strand at narrow face, gain uniform temperature distribution at cross section and decrease heat flux, adding the block's width to 100 mm. Three-hole nozzle is advantageous to increase flux and casting speed, but should avoid weak shell thickness in the center broad. In the real production, setting the SEN's immersed depth or plugging the hole at the bottom can adjust the flow and temperature distribution in the mold.

对比喇叭形水口,双侧孔水口(45°),牛鼻子水口和三孔水口,总的说来后两者优于前两者;而双侧孔水口(45°)又优于喇叭形水口;牛鼻子水口和三孔水口比较各有特点,前者对保证铸坯质量有利,为防止流股对窄面的冲击,增加挡块宽度到100 mm,可使结晶器横截面上温度分布更加均匀,降低窄面热负荷;后者对增加流量,提高拉速非常有利,但要防止中孔射流过强导致铸坯中心坯壳变薄,在实际生产中可通过控制水口浸入深度或塞住浸入式水口的底孔来调节结晶器中的流动与温度分布状态。

In comparison with bugle shaped nozzle, bifurcated nozzle downward jet angle 45°, cow-nose nozzle and three-hole nozzle, in all, the last two are better than the former and bifurcated nozzle downward jet angle 45 is better than bugle shaped nozzle; Cow-nose nozzle is helpful for guaranteeing the product"s quality, in order to protect jet flow from eroding the strand at narrow face, gain uniform temperature distribution at cross section and decrease heat flux, adding the block"s width to 100 mm. Three-hole nozzle is advantageous to increase flux and casting speed, but should avoid weak shell thickness in the center broad. In the real production, setting the SENs immersed depth or plugging the hole at the bottom can adjust the flow and temperature distribution in the mold.

对比喇叭形水口,双侧孔水口(45°),牛鼻子水口和三孔水口,总的说来后两者优于前两者;而双侧孔水口(45°)又优于喇叭形水口;牛鼻子水口和三孔水口比较各有特点,前者对保证铸坯质量有利,为防止流股对窄面的冲击,增加挡块宽度到100 mm,可使结晶器横截面上温度分布更加均匀,降低窄面热负荷;后者对增加流量,提高拉速非常有利,但要防止中孔射流过强导致铸坯中心坯壳变薄,在实际生产中可通过控制水口浸入深度或塞住浸入式水口的底孔来调节结晶器中的流动与温度分布状态。

Technologies such as DirectX, object oriented programming and database are used to realize visual three-dimensional flight simulation system. In the simulation system, operator controls UAV with flight rod. The system can display the change of position and track for UAV with the change of operational input. Flight simulation data can be also recorded. Then we can analysis the operation and stable performance of UAV without empennage with qualitative and quantitative methods.

运用 DirectX、面向对象编程与数据库等技术,实现了基于 PC 机的三维虚拟飞行仿真系统,通过人机交互飞行,可以比较直观地显示无人机的姿态与轨迹随操纵输入变化而变化,同时也可记录分析仿真飞行数据,从而对无尾式无人机的稳定性与操纵性能进行定性与定量的分析评估。

After amplying a 2.2kb fragment form the PPV-SC1 RF-DNA,we clone the fragment into pMD 18-T,named pTNSl.The whole sequence which is 1989 bp long was determined by sequencing, including the complete ORF of PPV-SC1 NS1 which encoding 662 amino acids.Alignment of pairs of sequence indicates that there are 98% and 99% similary with other porcine parvovirus strains Kresse and NADL-2, respectively. Multiple sequence alignment discloses that there are a few difference between ppv-scl nsl gene and other ppv nsl gene: A-G at 39nt,T-C at 153nt,A-G at 175nt, A-C at 1117nt, A-C at 1535nt .Alternative codon in ppv-scl nsl have distinctly different frequentfy by codonbias analysis at EMBOSS(http://genopole.toulouse.inra.fr/bioinfo/emboss). Thereis not distinct hydrophobicity and transmenbrane helices in ppv-scl nsl protein. Struction domain anslysis of PPV-SC1 NS1 protein indicate that there are a ATP/GTP-binding site motif A at 398-405,16 Protein kinase C phosphorylation site,21 Casein kinase II phosphorylation site,and 3 cAMP/cGMP-dependent protein kinase phosphorylation site.At the same time ,there is a same motif between ppv-scl nsl and Poxvirus D5 protein-like which may share in the same fuction which is necessary during virion duplication.

将PPV-SC1 NS1序列与其他PPV NS1基因进行多序列比对,结果显示,PPV-SC1 NS1与其他的PPV NS1的同源性较高,仅存在个别的差异,分别是第39位A→G,第153位T→C,第175位A→G,第1117位A→C,第1535位A→C;同源搜索比较表明,PPV-SC1与PPV NS1同源性可达98%、99%,与其他的细小病毒NS1基因也存在很大的保守性;密码子偏向性分析结果表明PPV-SC1 NS1基因在同一氨基酸的不同密码子的选择上存在一定的偏向性;PPV-SC1 NS1蛋白总体上说具有亲水性不存在明显的疏水性区段,用swiss TMPRED软件预测PPV-SC1 NS1的跨膜区,返回的结果并没有得到有显著意义的跨膜区的存在;根据基于motif数据库的结构域预测,PPV-SC1 NS1的第393-415位氨基酸残基存在潜在的ATP/GTP结合位点,该蛋白还存在16个蛋白激酶C磷酸化位点,21个酪蛋白激酶2磷酸化位点,3个cAMP-/cGMP依赖蛋白激酶磷酸化位点,PPV-SC1 NS1蛋白与POX_D5(痘病毒D5蛋白)具有一致的保守结构域,推测NS1可能与POX_D5有类似的功能。

ResultsIn the writhing test, 10 mg·kg-1 of Nudicaulol significantly reduced the number of writhing induced by ip 0.05% antimony potassium tartrate, in the hot plate test, 10 mg·kg-1 of Nudicaulol significantly enhanced threshold value of pain induced by thermal stimulation in 30, 60 and 90min after sc Nudicaulol.

均皮下注射给药。采用小鼠扭体法、热板法观察药后30 min各组小鼠的扭体反应次数和热板法药后30,60,90 min的痛阈值。结果10 mg·kg-1努地可醇可明显减少扭体次数、提高痛阈值,与生理盐水组比较差异(P<0.01)。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。