CONSTAN相关论文
Electron density distributions of 2-aminoethanol (2AE) and 2-amino-1-propanol (2AP) are calculated in both the coordinat......
In liquid–liquid systems, the substrates in the liquids are inaccessible to each other for the reaction. By adding a sm......
Oleanolic acid 1 exists widely in food,medicinal herbs and other plants and possesses many attractive biological activit......
The thermoelectric performances of 1 T-ZrX_2(X=S and Se) single layers were investigated using a combination of density ......
The title compound crystallizes in the space group C_5~4 with unit cell constants a=17.900 (5)A, b=18.466 (7)A, c=15.48......
The problem of robust L 1 filtering with pole constraint in a disk for linear continuous polytopic uncertain systems is......
Dispersion effect on the current voltage characteristic of AlGaN/GaN high electron mobility transist
The current voltage (IV) characteristics are greatly influenced by the dispersion effects in AlGaN/GaN high electron mob......
The solubilities of two β-agonists,cimaterol and mabuterol,in supercritical carbon dioxide (SF-CO_2)were measured by a......
2007 was not a typical year in the diammonium phosphate (DAP) market.With the impact of increased demand for grain and ......
By employing many methods including distinguishing the land maps, interpreting the aerophotoes and Satellite photogr......
Community residents play an important role in the development of rural tourism. Taking the interest demands of stakehold......
With the rapid development of China’s economy, the annual growth rate of in- vestment in capital assets in the country......
China is among the first countries in the world in developing the science of urban planning,and has evolved her own uni......
The longitudinal generalized magneto-optical ellipsometry(GME) method is extended to the measurement of threelayer ultra......
Manmade fibers continue to find new areas of application.At the Techtextil 2013 trade fair,held from June 11-13,2013,at ......
In this paper, the hydraulic resistances and capacitances were evaluated. based on the development of non-(?) model of ......
Proterties of large-conductance calciumactivated potassium channel in pyramidal neurons acutely isol
Properties of large-conductance Ca~(2+) -achvated K~+ (BK_(Ca)channel were studied in ex-cised patches of pyramidal neu......
At present, the keystone for integration of the world’s economy is the liberalization of commodities, services, investm......
Design of new traditional Chinese medicine herbal formulae for treatment of type 2 diabetes mellitus
In the present study, 28 Chinese medicinal herbs belonging to traditional Chinese medicine(TCM) for the treatment of typ......
The optimized geometries, frequencies and interaction energy corrected with basis set superposition error (BSSE) of the ......
It can take the uninitiated a minute to realize that“Gangnam Style”is satire.When the absurdly infectious single by Ko......
The geometries of CF3OCF2·, CF3OCFCF3· and CF3OCF2CF2· radicals were investigated by density func-tional theory(DFT) ......
Until fairly recently economists envisaged three stages of economic development.First, there was the stage of capital ac......
Tidal harmonic analysis of TOPEX/POSEIDON data in the Northwest Pacific by introducing difference-ra
The difference-ratio relations are introduced to separate tidal constituents that are aliaseddue to the sampling interva......
As with many other methods and approaches， Grammar Translation tended to be referred to in the past tense as if it no lon......
本文旨在依据相关理论从话题、真实性、体裁、语言项、阅读活动和文化意识等方面理论性地对该教材中的阅读材料进行分析,以研究该......
Performance assessment of a proportional-integral-derivative (PID) controller is condueted using the PID-achievable mini......
针对脉冲激光应答测距易产生传输延迟时间抖动进而影响测距精度的问题，选用LD激光器，采取自动温度控制、自动功率控制和高精度的脉冲......
目前实用的选相元件在系统振荡时可能会误选相。有必要研究能适用于振荡时的选相方案。分析了振荡中再故障时故障回路测量阻抗不变......
随着社会生活和工业生产对环境保护、节约能源等的需求越来越多,LED路灯得到了越来越广泛的应用。本系统以MSP430F5438A单片机为调......
通常纵波入射且当入射角大于临界角时,由于反射系数的变化,角道集记录发生相位畸变,为实现同相叠加,要在叠加之前进行相位校正。本......
从SSSC定阻抗和定电压两种控制角度出发，分别将其视为可控电容器和可控电压源，分析了其各自的运行特点，并建立含SSSC的单机无穷大系统......
<正> 1. INTRODUCTIONG. Ladas and I.P.Stavroulakis [1] Consider oscillation of the solutionsin first order linear delay d......
文章重点介绍一种利用变频技术控制节流调速回路中液压泵的输出流量,使其等于油缸所需要的流量且保持恒定的控制系统的工作原理及......
光伏电池（阵列）的输出功率与辐照度和温度有关,为使得输出功率达到最大,需要进行最大功率点跟踪（MPPT）。本文对常用的两种控制方法进行......
介绍ＰＭＣ压力变送器的技术特点，由ＰＭＣ压力变送器、ＰＩＤ调节器、变频调速器的组成的系统在恒压供水中的应用，并阐述了该系统组成、工作原理和优点......
针对宽带信号的波束形成问题,利用Olen和Compton的自适应窄带波束优化设计方法的原理,提出了基于Olen-Compton的恒定响应宽带波束......
通用型变频器采用移相正弦脉宽调制（SPWM）作为控制算法，动态响应慢，低频性能差，大负载升、降频时输出电流会有超调现象。将定子电阻压降......
DXD系列包装机在工作中容易产生袋长误差，无法随机补偿、调整。文章介绍一种基于AT89C51单片机控制的恒频斩波细分驱动方案及实现技......
针对MnO2存在导电性差、真实比容低、离子传导性差等问题,开发了新的制备方法,制备出了纳米网状结构的Ti基IrO2-MnO2纳米涂层。采......
分析了发射信号幅度加权系数和阵元发射灵敏度随频率变化对宽带水声信号恒定束宽和恒定功率发射的影响，采用了由多谐振电路相互耦合......
The 2nd Annual Session of Energyand Information Committee,CSEE, chaired by Mr. Sun Jiaping was held inBeijing on Dec. 17......
本文介绍了用PLC控制叉车液压油缸测试系统的原理,说明了如何使用级式语言编制PLC控制程序的方法并且给出了测控系统的软、硬件设......
在原滚齿机工作台外侧增设扩径工作台、静压支承座等件组成静压导轨, 采用定量技术供油; 在底座与床身间增设加长床身、改换床身传......
本文研究了三硝基间苯三酚铅在不同环境压力下的燃烧现象,指出在高密度下,三硝基间苯三酚铅能够稳定燃烧并具有极快的燃烧速度.......
V^2控制是基于输出电压纹波的双环电压型控制方法,具有对负载变化的超快响应速度,通常应用于对输出响应要求较高的开关变换器中。......
本文针对目前电磁理论微扰法处理中的某些不足,提出微扰量、不变量和逐级处理这三个概念.以介质微扰为例,得到了精度更高的谐振腔......
射线弹跳法（SBR）是利用射线跟踪来进行电波传播预测的常用算法。传统的SBR算法引入自适应接收球来接收射线，对不同射线接收球半径不同......
