吡啶

The hydrogen bonding of 1:1 complexes formed between acetamide and three kinds of isomers of picolines have been completely investigated using B3LYP method at various basis set levels from 6-31G to 6-31+G and 6-31++G. The results show that the interaction energies of hydrogen bond complexes between acetamide and picoline isomers have great effects on the values of h_.

2采用密度泛函理论等方法研究了乙酰胺分子分别与甲基吡啶三种异构体分子以1：1的比例形成的氢键络合物，从B3LYP/6-31G到6-31++G基组水平进行了优化，利用结合能数据讨论了焓对作用系数的差异。

In the paper,a PVC membrane picric acid anion selective electrode is developed using Bromhexadecyl pyridine picrate ion pair as the active component and dioctyl phthalate as the plasticizer.

本文用苦味酸溴代十六烷基吡啶离子对作为电活性物质，以邻苯二甲酸二辛酯为增塑剂，研制成以PVC为基质膜的苦味酸离子选择电极。

Among which, the ligands with a so-called "pincer" structure have been investigated deeply recent years with regard to their synthesis as well as their potential application in homogeneous catalysis.

其中一类具有"pincer"结构的吡啶基含氮三齿配体的合成及其在均相催化中的潜在应用，近些年得到了较深入的研究报道。

ABSTRACT:OBJECTIVETo synthesis the 4alkyl 1［2(pyridin2yl ethoxy)ethyl］ piperazine and study its effects for ability of memory in mice.

［目的］合成4烷基1［2(2吡啶乙氧基)乙基］哌嗪，探讨减少了酯结构的合成物对小鼠记忆力的影响。

The mass fraction of isocyanurate was calculated by piperidine method.

采用六氢吡啶法测出了异氰腺酸酯的质量分数。

Functionalized tetrahydropyridine and piperidine ring systems are widely found in biologically active natural products and pharmaceuticals.

四氢吡啶和哌啶环结构是那些有生物活性和药用价值的天然产物中最常见的结构之一。

The details of this route as follows:With the piperidine as catalyst, p-hydroxylbenzaldehyde condensed with thiazolidine-...

同时，本文还对反应过程中产生的5-乙基-2-乙烯基毗啶、5-乙基-2-羟乙基吡啶、5-[(4-羟基苯基)甲基]-2，4-噻唑烷二酮、5-4-

Genomic DNAs were then purified from these cells and treated with piperidine for chemical cleavage. Adjust treated DNA concentration to 0.4μg/μl.

细胞裂解后，用常规方法制备基因组DNA，而后进行吡啶化学法裂解，调整裂解后的DNA浓度为0.4μg/μl。

Some new α,β-unsaturated sulfones were prepared by condensation of 4-nitrophenylsulfonylacetates with aromatic aldehydes in cyclohexane/CH_3CH_2OH in the presence of catalytic amounts of piperidine.

不饱和砜是以对硝基苯磺酰基乙酸酯为原料与芳香醛在六氢吡啶醋酸盐催化下发生缩合反应制得的。

Field potentials in a approximately 1 mm(2) region were simultaneously measured using an 8x8 microelectrode array with a polar distance of 150 microm. The extracellular solution contained nifedipine and tetrodotoxin to suppress activities of smooth muscle cells and neurons, respectively.

约1毫米面积的ICC-MyP 区域的场电位通过极距为150um的8x8微电极阵列进行测量，含硝苯吡啶和河豚毒素的细胞外液能抑制平滑肌细胞和神经元。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了