The　procedures　are　described　involving　a　selective　Hofmanntype　elimination　of　the　2cyanoethyl　groups　from　the　bisimidazolium　salts　3　obtained　by　the　reaction　of　α,ωdihalides　2　with　1Himidazole1propanenitrile　1.

１（２氰乙基）咪唑１與α，ω二鹵化合物２反應(yīng)生成雙咪唑钅翁鹽３，３在堿的作用下發(fā)生選擇性Ｈｏｆｍａｎｎ型消去反應(yīng)以９０。

Using the –~CHR-(CH_2)_3-NFCH_3 (R = H, CH_3, CH_2CF_3, CHO, COCH_3) as the computational model, the two possible intramolecular reactions, nucleophilic substitution on nitrogen and elimination reaction, are studied at the theoretical level of MP2(full)/6-31+G(d,p).

我們在MP2(full)/6-31+G(d,p) 理論水平上,以–~CHR-(CH_2)_3-NFCH_3(R = H, CH_3, CH_2CF_3, CHO, COCH_3)為計算模型,對分子內(nèi)可能發(fā)生的兩條反應(yīng)路徑—氮原子上的親核取代反應(yīng)及消去反應(yīng)進行了理論研究。

deghost inverse filter

消除虛反射反濾波器

Remove Wavelet Dispersion in GPR Data by Using Inverse-Q Filter;

利用反Q濾波方法消除探地雷達信號子波頻散

Multiple Elimination Study Based on Wavefields Separation between the Reflecting and the Scattering

基于反射、散射波場分離的多次波消除方法研究

Single Phase Unidirectional DART Structure SAW Filter

單向單相分布式聲反射結(jié)構(gòu)的聲表面波濾波器

two-sided least-squares inverse filters

雙邊最小平方反濾波器

one-sided least-square inverse filter

單邊最小平方反濾波器

backward prediction error filter

反向預(yù)測誤差濾波器

bundle-integrated-guide-distributed reflector

集束波導(dǎo)分布式反射器

Tuning Coupled Cascaded Bandpass Filter Using Mixed Method of Reflection Coefficient Phase and Group Delay

反射系數(shù)相位與群時延混合法調(diào)諧耦合級聯(lián)帶通濾波器

The Research on Filering Noises of Biomedical Signals with Digital Filter;

生物信號噪聲消除的數(shù)字濾波器研究

A technology of tracking filtering in ARM terminal guidance phase

反輻射導(dǎo)彈末制導(dǎo)跟蹤濾波技術(shù)研究

Study on Using FK Filtering to Extract the Seismic Negative Reflection

基于FK濾波的TSP負反射提取方法研究

Effect of Feedback Filter Tap-Length on Decision Feedback Equalizer

反饋濾波器長度對判決反饋均衡器性能的影響

Research on Induction Logging Deconvolution Filter Design Method

感應(yīng)測井反褶積濾波器設(shè)計方法研究

Numerical simulation of wave run-up and breaking on the ave-absorbing beach and calculation of wave reflection coefficients

消波灘消波的數(shù)值模擬與反射系數(shù)計算

On Elimination Of Morality Straying In Legal Theory;

消除法律中的道德迷思——波斯納的反思

Multi-channel Orthonormal Wavelet with Symmetric or Antisymmetric Filter Banks;

具有對稱或反對稱濾波器組的多通道正交小波

The Principle of CFA and Its Application in the Voltage-Mode Filter;

電流反饋放大器原理及其電壓模式濾波器應(yīng)用