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[Objective]To optimize the ultrasonic technology extraction of polysaccharides from RHIZOMA PHRAGMITIS. [Method]The effe......
A simple and quick method for the synthesis of water dispersible stable silver nanoparticles has been developed. Calix[4......
图1所表示的电路是一种直接采用一只低通滤波器,并通过其输入信号与滤波总输出信号相减的方法来构成一种稳定的高通滤波器的一种......
The solid phase extration disks method for analyzing radiostontium was developed in recent years. This method uses thin ......
Pulmonary arteriovenous malformations(PAVM) are congenital vascular communications in the lungs.They act as right to lef......
Double-wavelength recording used in a pulsed digital micro-holographic system to record ultra-fast processing of the ord......
The precise definition of polarization transform is proposed from the viewpoint of polarization domain transform for the......
A new filtering method is proposed to accurately estimate target state via decreasing the nonlinearity between radar pol......
A method for optimizing the spectral distortion of an ultrafast pulse in a polarization-maintaining picosecond linear-ca......
A 23.75-GHz frequency comb with two low-finesse filtering cavities in series for high resolution spe
A laser frequency comb with several tens GHz level is demonstrated,based on a Yb-doped femtosecond fiber laser and two l......
When the mixture of CpTiCl_3-KI is used, many acetals and ketals, which are difficuitly deprotected with CpTiCl_3 alone......
[Objectives] The aim was to establish a UPLC method for simultaneous determination of two components in Erjing pills and......
A series of succinate-derived macrocyclic amides(1) was synthesized via ring-closing metathesis(RCM) as the key step. Th......
Optimization of the Extraction Technology of Total Saponins in Lonicera fulvotomentosa Hsu. Et. S. C
[Objective] The paper was to optimize the extraction technology for total saponins in Lonicera fulvotomentosa Hsu. Et. S......
China Advanced Research Reactor (CARR), with a non-perturbed highest thermal neutron flux of 8×1014 cm-2·s-1, is one o......
According to the principle of photosythesis with sunlight and CO2 by phytoplankton supplying food for marine organisms,......
Vertical flux of particulate organic carbon in the central South China Sea estimated from ~(234)Th-~
~(234)Th-~(238)U disequilibria were applied to examine the particle dynamics in the euphotic zone of the central South C......
数字音频信号的取样频率规定为三种,32kHz,44.1kHz和48kHz。三种取样频率各用于不同的场合,CD使用的取样频率为44.1kHz,卫星音频......
CS8420提供了以前需要三个芯片才能完成的功能,是目前业内用于消费类和专业音响系统的集成度最高的采样速率转换芯片。其支持从8k......
This paper presents a new method for resynchronization attack, which is the combination of the differential cryptanalysi......
A baseband circuit for wake-up receivers with double-mode detection and enhanced sensitivity robustn
This paper proposes a baseband circuit for wake-up receivers with double-mode detection and enhanced sensitivity robustn......
The design adopts self-designed high accurate voltage source, Micro Control Unit (MCU), D/A converter and amplifier to c......
Filtration Structure of Finite-Dimensional Special Odd Hamiltonian Superalgebras in Prime Characteri
本文通过对荣华二采区10...
为了有效降低电子设备产生的传导电磁干扰噪声,需要设计合适的电磁干扰滤波器,而噪声抑制效果与噪声源阻抗的精度有关。插入损耗法......
图像分割就是把感兴趣的区域从背景中分割、提取出来,为了使分割出来的图像特征信息完整,根据图像的灰度值和空间距离构造了一种相......
Filtration Structure of Finite-Dimensional Special Odd Hamiltonian Superalgebras in Prime Characteri
The filtration structure of finite-dimensional special odd Hamilton superalgebras over a field of prime characteristic w......
反射波法作为灌注桩检测的常规手段。但是在实际检测中由于检测人员对这种方法的不了解不熟悉经常出现一些错误，结合工程实际谈谈反......
通过对油在滤芯内流动的力学特性分析,得出在其他条件不变的情况下,通过过滤系统的流量是影响滤芯寿命的主要因素,流量增加1倍,寿......
泥水盾构在高透水地层成膜困难是当前工程中亟待解决的难题，在泥浆中添加粗粒材料是解决此问题的一种有效手段。文章采用自行设计的......
对VB12发酵液进行絮凝预处理，由正交实验确定影响絮凝的主要因素，结果表明，最佳絮凝条件：絮凝剂为聚合氯化铝、加入体积分数7％、pH值6、......
在高频地波雷达工作过程中,工作频率和带宽需要随着探测距离的远近以及距离分辨率的不同而改变,要求所设计的FIR滤波器的阶数和系......
为克服单自由度PID控制器不能同时具备最佳的目标值跟踪特性和抗干扰性的缺点,结合内模控制(IMC)原理,为时滞控制系统设计了一种仅......
本文讨论格蕴涵代数中的直觉模糊滤子的概念及其性质。给出了直觉模糊格滤子与直觉模糊滤子的关系,得到了直觉模糊滤子的几个等价......
提出了用单ＣＣⅡ－实现二阶电流模式滤波器的新电路，仅用少量元件，即能实现二阶低通、带通滤波函数。电路用Ｐｓｐｉｃｅ程序进行了仿真。该电路具有电......
近五年来，国内卷烟产量逐年增长比率在5％左右，而卷烟配套用纸产量却急剧增长，产大于销。本文阐述了国内卷烟配套用纸的需求及生产情况，......
合成孔径雷达干涉相位质量直接影响到相位解缠精度，选择合适的滤波方法对干涉相位进行滤波处理是去除相位噪声、改善干涉相位质量的......
公路工程反滤设计的理论方法正在发展之中,存在方法多,难以取用;要求严,料难找,施工难度大,费用高等问题.本文在总结公路、水利等......
通过调查本室约2年的染菌统计,找出了导致染菌的主要因素--空气净化系统带菌.介绍了空气净化系统的工艺流程及主要设备,分析了其染......
In this paper,the theory of uniform filter banks using all-pass tilters is furtherdeveloped.A new structure of two stage......
设计了基于CAN（Controller Area Network）总线的多路车身传感器信号采集和车身各控制器之间通讯系统。设计电路对车身轮速信号、车速......
研究采用系统辨识方法建立平流层验证飞艇横侧向模型,针对飞行试验中风的扰动和测量噪声明显,对辨识参数的精度有影响。为解决上述......
本文介绍了Windows环境下根据网络设备接口规范(Network Device Interface SDecification)NDIS开发网络驱动程序的技术.并分析了开......
随着网络的快速发展,基于组的通讯已经成为一种重要的通讯机制,它可提供可靠的、顺序的消息传送以及提供组成员关系服务.安全群组......
随着Internet技术的迅速发展，各种各样的网络多媒体应用层出不穷，其中以流媒体技术为背景的应用发展最为迅速，其目的在于缩短客户对多......
简述了超细粉末在过滤、洗涤的特性，并介绍了高效精密微孔过滤机的原理及特点，通过超细碳酸钴粉末的生产实践证明：采用微孔过滤机进行......
在煤层气储层钻井过程中,井筒压力波动容易使钻井液侵入煤岩裂缝造成储层渗透率伤害。通过室内岩芯流动实验,分别测定了井筒压力稳......
为了利用迭代算法快速实现不完全投影数据下的图像重建,介绍了乘型ART(A lgebraic Reconstruction Techniques)迭代算法的快速实现......
通过对生物膜过滤的机理研究,利用哈尔滨文昌污水处理厂的污水处理再生全流程对污水进行一级、二级以及深度净化,定期从各取样口取......
研究了加氢氧化钠去除油田开采水中铁和出水含铁质量浓度对浊度的影响。铁的测定使用邻二氮菲吸收光谱法，浊度采用便携式浊度仪914......
