Rare base

5-methylcytosine ( m5C ) as a rare base exists in eucaryotic genomes , it is a normal constituent of many eucaryotic DNA , whose existence is a character of eucaryotic DNA .

迄今为止，不少人认为5-甲基胞嘧啶的存在可能是基因突变的热点。然而，事实上5-甲基胞嘧啶作为一种稀有碱基，本来就是许多真核生物DNA的正常组分。

Results : Recombination vectors were obtained by both methods and better cloning efficiency was achieved and rare base deletion and mutant were found in the PCR method .

结果：两种方法均能得到重组质粒，但是双链PCR法构建效率高且不易引起碱基的缺失和突变。

Rare earth base alloy with special characteristic make them potential candidates for function materials .

稀土基合金的特性能满足人们在特殊材料上的实际需求。

But research on multi-carriers modulation recognition especially OFDM was rare . Base on this reason , multi-carriers modulation classification and parameters estimation are studied in this dissertation .

基于上述原因，同时结合实际工作需要，本文对多载波信号的识别与参数估计进行了研究。

Rare earth-Schiff base complex Nd ( H2Salen ) 2Cl3 · 2C2H5OH was synthesized by a simple and convenient method , and characterized by IR and elemental analysis .

采用简便的方法合成了稀土席夫碱配合物Nd（H2Salen）2Cl3.2C2H5OH（H2Salen是指N，N-′disalicyli-deneethylenediamine），用红外光谱、元素分析和络合滴定的方法确定了配合物的分子式。

Establishment of rare earth trading base for effective adjustment and control of regulatory market

在股票或日用品市场上侵略地交易的投资者。建立稀土交易基地有效调控和规范市场

Rare Earth Cobalt Base Permanent Magnets with Special Application

特殊用途的稀土钴基永磁体

Room temperature polymerization of alkyl-isocyanates catalyzed by rare earth Schiff base complexes

稀土Schiff碱配合物催化烷基异氰酸酯室温聚合

However , current research in this area is rare because the base far away from the fault source and the vibration signals collected relatively weak .

但是，由于基座离故障源较远，采集到的振动信号比较微弱，所以目前基于基座的故障诊断技术尚处于探索阶段。

Establishment of rare earth trading base for effective adjustment and control of regulatory market Fluorescence spectra showed that two kinds of complexes have good fluorescence properties .

建立稀土交易基地有效调控和规范市场结果表明两种稀土配合物具有较好的荧光性质。

Polymerization of Styrene and Isoprene with Rare Earth Schiff Base Complexes ; Synthesis and characterization of hydroxyl-terminated polyisoprene and its copolymer

稀土席夫碱配合物催化苯乙烯、异戊二烯聚合端羟基聚异戊二烯及其共聚物的合成与表征

SURFACE PROPERTIES OF RARE EARTH OXIDE SOLID BASE CATALYSTS ⅰ . Characterization of Surface Active Sites of Rare Earth Oxide Catalysts

稀土氧化物固体碱催化剂的表面性质Ⅰ.稀土氧化物表面活性中心的表征

The FTL-1 desulfurization additive is composed by rare earth element and base metal , which for sulfur reduction of FCC during FCC process was tested and evaluated in a confined-fluidized-bed reaction apparatus .

FTL-1脱硫添加剂主要由稀土和碱土金属组成。

To improve the ability of anti oxidation and anti pulverization of rare earth / nickel base hydrogen storage alloy , palladium was coated by electroless plating , and the influence of the coated palladium on the properties of the alloy with different Pd contents was investigated .

利用化学镀的方法，在储氢合金粉末表面包覆金属钯，以改善稀土镍基储氢合金的抗氧化和抗粉化能力，并研究了不同的钯包覆量对合金性能的影响。

We believe that the focus of previous state rectification action was rare earth , including building a national rare earth strategic reserve base in Baotou .

我们认为，国家之前的整治活动重心在于稀土，包括在包头建立国家稀土战略储备基地。