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In older children, midazolam, 0.1 mg/kg, may be substituted for pentobarbital.

年龄较大的儿童中戊巴比妥可用0.1mg/kg的咪达唑仑代替。

The structures and nonlinear second-order optical properties of phenothiazine derivatives substituted at nitrogen by different substituents have been studied.

研究了各种取代基在吩噻嗪的氮上取代后衍生物的结构和二阶非线性光学系数。

R is generally a substituted phenyl group in the most preferred compounds.

在大多数可取的化合物中，R通常为取代的苯基。

Thus, the photophysical properties of the polymers can be tuned by attaching different substituted side groups onto the phenylene.

溶剂的极性对聚合物溶液的光谱性能有显著的影响，溶液光谱随溶剂极性的增大逐渐向长波移动。

A series of so-called hairy-rod fluorene-alt-benzene based polymers with different substituted groups on phenylene were synthesized through Suzuki route.

通过光谱、电化学和模拟计算等手段研究了苯环上不同性质的侧基取代芴苯聚合物的发光性质、电化学性质和溶剂化效应等，同时研究了侧基性质的变化对这些物理性质的影响规律。

Red light-emitting polymer TPA-CNPPV was synthesized by alternatively introducing TPA and dicyano-substituted phenylene into the main chain.

通过将三苯胺与苯环上被对二氰基取代的PPV单元共聚，利用电子给体与电子受体交替的结构得到了发红光的聚合物TPA-CNPPV。

However, the spectral stability was increased, and the 0-1 transition and the full width at the half-maximum of photoluminescence spectra was decreased with the increase of the alkoxy length on phenylene. The nature (e.g. electron-donating and electron-withdrawing) of the substituted side groups on phenylene has obvious effect on the optical properties, QY and electrochemical properties of the polymers.

苯环上取代侧基的给吸电子性质变化对聚合物的光电性能具有全面的影响，改变取代侧基的给吸电子性质可调节芴苯共聚物的发光颜色和HOMO、LUMO能级以及HOMO-LUMO能隙等，因此，通过引入不同性质的侧基可以实现对此类聚合物光物理性能的调控。

Compared with PF6P, the attachment of alkyl or alkoxyl groups on phenylene effectively inhibits the formation of fluorenone-based excimers and thus remarkably improves the thermal stability of the spectra.3. Morphology and phase behavior of the polymers substituted with alkyl and alkoxyl groups on phenylene were investigated by differential scanning calorimetry, X-ray diffraction and other techniques.

一方面，未取代的PF6P薄膜和烷氧基取代苯的PF60C6薄膜在空气中退火后都产生了芴酮结构，随退火温度的升高所生成的芴酮结构的含量逐渐增大；另一方面，新的长波发射随退火温度的升高其荧光寿命明显增加，因此确定PF6P空气退火薄膜的长波发射是来源于芴酮的激基缔合物。

These polymers exhibit typical fibrillar morphology in the films. During heating in DSC, all the polymers substituted with alkoxy on phenylene show a nematic phase.

三、通过X-射线衍射、示差扫描量热仪和形貌表征等手段研究了苯环上取代基烷基、烷氧基长度对聚合物形貌、相转变过程等的影响。

In order to find active pesticide leading compounds, thinking about that triazolothiadiazoles had various biological activities, this paper designed and synthesized 11 novel title compounds from 3-substituted-4-amino-5-mercapto-1,2,4-triazoles with heterocyclic carboxylic acid via cyclization in the presence of phosphoryl chloride by the princple of combination of active strucural moieties. The structures of the title compounds were characterized by melting point, IR, 1HNMR and elemental analysis.

为了寻找高活性农药先导化合物，考虑到三唑并噻二唑衍生物具有广泛的生物活性，本文利用活性亚结构拼接原理，将活性基团分别引入1，2，4-均三唑并[3，4-b]-1，3，4-噻二唑杂环的3位和6位，合成了未见文献报道的3，6-二取代均三唑并[3，4-b]-1，3，4-噻二唑类化合物11个，并用IR、1HNMR及元素分析测试技术对其进行了结构表征。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！