电流

According to capability of the circuit of DC motor, build the model of DC motor; designed the speed-current double closed loop system based on the model of DC motor; analyzed the method to solve the problem of discontinuousness of current.

二、根据直流电机回路，建立电动机的数学模型；针对该电动机模型，选用速度——电流双闭环控制系统，建立双闭环系统的控制方框图；分析晶闸管相控整流方式中出现电流断续现象的解决方法。

The majority of neurons examined (80.90%) were sensitive to ATP (10-5~10-3M), ATP activated an inward currents in a concentration-dependent manner, and IATP were blocked by PPADSpyridoxalphosphate-6-azophenyl-2′,4′-disulfonic acid, an antagonist of the P2X receptor.

结果显示：(1)大部分受检细胞(80.90%)对外加ATP敏感，产生一具有浓度依赖性的内向电流，且该电流可以被P2X受体拮抗剂PPADS所阻断。

According to the neural cable model, this dissertation deduced a stable solution. Based on the lead model, the vibratory equation of electriferous lead in a static magnetic field is set up under the condition of coupling magneto-acoustic field. It is verified that the vibration in bio-tissue is proportional to with the product of the magnitude of the magnetic field, the current amplitude and the sinusoid of angle between them.

根据神经的电缆模型，论文导出直流稳态解；基于导线模型，根据洛仑兹方程和细弦上的波动方程，论文建立了磁声耦合条件下带电导线在磁场中的振动方程，导出生物组织中的振动与磁场的大小、电流的大小和磁场与电流角度的正弦值乘积成正比。

Electrosynthesis is a new method for preparation of αalanine. There is few reference about it, but electrosynthesis has a high selectivity and a high current efficiency. In addition, the operating condition is mild, and the reaction process is easy to be controlled.

有关电化学法合成α—丙氨酸的文献仅有两篇，虽然这方面的研究很不充分，但是电合成法避免了剧毒物质的使用，操作条件温和，通过选择电极材料、电极电位和电流密度等电化学参数，能够控制合成发应的进程，而且电合成可以具有很高的选择性和电流效率。

We theoretically investigated the effects of incorporating Ih, T-type Ca2+ current, sustained inward current, and/or low-voltage-activated L-type Ca2+ channel current on 1 creation of BP cells, 2 robustness of BP activity to electrotonic loads of nonpacemaking cells, and 3 BP cell ability to drive NP cells.

我们从理论上研究了合并Ih， T-型 Ca2+流，持续内向电流，和/或低电压激活的L-型Ca2+通道电流对1产生 BP细胞， 2 BP 活性对非起搏细胞电紧张负荷的稳定性，和 3 BP 细胞驱动 NP细胞的能力的作用。

Those are measured and calculated by computer such as voltage, current, frequency, active power, reactive power and power factor. The errorless of three-phase voltage and current is less than 0.5 percent.

用微机实现对电网电压、电流、频率、有功功率、无功功率、功率因数的测量和计算；计算高压配电线路得出的三相电压、三相电流有效值误差小于0.5％。

In this paper, titanium ethoxide was synthesized by the direct electrochemical method. The production was characterized by Raman spectra. The effects of different factors on the voltage, current efficiency, material yield and space-time yield were investigated.

采用直接电化学法合成乙醇钛，采用激光拉曼光谱对产物进行了表征，详细探讨了电解时间、电流密度、支持电解质浓度、电解液温度以及电极间距对槽电压、电流效率、产物收率和时空产率的影响。

In the presence of 500nM TTX, 70%M/T cells presented spontaneous activity. 80%M/T cells with spontaneous activity appeared excitory postsynaptic currents , which could be reverted at 20mv, 14%M/T cells appeared inhibitory postsy-naptic currents , which the reverse potential was -90mv. Few presented both EPSCs and IPSCs.

当细胞外液有1uM的河豚毒，70%的M/T细胞有自发活动，其中80%自发活动是兴奋性突触后电流、它的反转电位是20mv.14%的自发活动是抑制性突触后电流，它的反转电位是-90mv，极少数细胞同时有EPSPs和IPSPs。

This product is applicable to coal mine where has explosible dangerous gas and coal dust,It is used for controlling direct starting stop and reversion of three-phase squierrel cage type asynchronous motor whose rated current up to 400A in system of AC50Hz rated voltage 1140V or 660V, Meanwhile it protects the electromotor and relative circuit, The starter can be combined with firedamp sensor and used to test the consistency of mining working area,the starter will trip when it exceed the limit ;adopt intrinsic safety type circuit for the control circuit; possess the function of local control and remote control by single set and multi sets procedure control; display working voltage current and gas consistency can remember fault parameter

该产品适用于具有爆炸性危险气体和煤尘的矿井中，在交流50Hz，额定电压为1140V或660V ，控制额定电流只400A的三相鼠笼式异步电动机的直接起动，停止及反转，同时对电动机及有关电路进行保护，起动器可与甲烷传感器相连接用于检测才掘工作面的甲烷浓度，当其超限时起动器跳闸；控制电路采用本安型电路；具备单台就地控制与远方控制及多台程序控制功能，能显示工作电压、电流、瓦斯浓度，并能记忆故障参数。

Ion current is proportional to the concentration of corresponding species or faradaic current for the formation of this species.

离子电流I〓正比于物质的浓度c，或产生此物质的法拉第电流。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。