experimental research on synthesis of p-tolualdehyde by ionic liquids catalytic carbonylation

the synthesis of α-hydroxy-α-methyl acetophenone

α-羟基-α-甲基苯丙酮的合成

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the influence of electric conductivity of polyaniline doped by toluene-p-sulfonic acid

掺杂对甲基苯磺酸对聚苯胺导电性能的影响

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firstly, we design the molecular structure for coal tar pitch, and modify industrial medium-temperature coal tar pitch with divinylbenzene ( dvb) and p-methyl benzaldehyde ( pmb) in the presence of p-toluene sulfonic acid ( pts), the modification mechanism of which is studied.

首先对煤沥青的分子结构进行设计，然后分别采用二乙烯基苯（DVB）、对甲基苯甲醛（PMB）对工业中温煤沥青进行了改性，并分析了煤沥青的改性机理；

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a novel type of functional polymer with designed structure, controlled molecular weight and low polydispersities can be prepared via atrp ( atom transfer radical polymerization).

通过由对氯甲基苯甲酸引发的苯乙烯原子转移自由基聚合（ATRP）合成了分子量可控、分子量分布窄的新型功能聚合物。

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regulation of dimethylbenzanthracene-induced p1-450 gene expression in human lung tumor cells in culture

二甲基苯并蒽对肺肿瘤细胞P1-450基因表达的调节

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ethane, isobutane, butane, cyclopentane, isopentane, toluene, ethylbenzene, m/ p-xylene, 1,2,4-trimethylbenzene, ethylene, propylene and isoprene are the main vocs in ambient air in jinan.

乙烷、异丁烷、正丁烷、环戊烷、异戊烷、甲苯、乙基苯、间/对二甲苯、1,2,4-三甲基苯、乙烯、丙烯与异戊二烯是济南市环境空气中主要VOCs。

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methods the solution or membrane containing dimethylbenzanthracene ( dmba) was pasted on rabbit's buccal mucosa three times a week for 12 weeks.

方法将二甲基苯并蒽（DMBA）制成DMBA丙酮溶液及DMBA药膜，涂抹或贴附于家兔口腔颊黏膜，3次/周，共12周。

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a new arrayed waveguide grating ( awg) multiplexer was fabricated by using synthesized 3f-pes as the waveguide core.

用合成的3-三氟甲基苯侧基聚醚砜（3F-PES）作为波导芯层材料制作了新型硅基聚合物阵列波导光栅（AWG）复用器。

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b stage pitch resin was synthesized at a low temperature taking benzaldehyde ( ba) as the cross-linking agent and taking p-toluene sulfonic acid ( pts) as catalyst to react with aromatic hydrocarbon material-phenanthrene ( ph).

用苯甲醛（BA）作为交联剂，菲（Ph）作为纯芳烃原料，在对甲基苯磺酸（PTS）的催化作用下，合成出B阶沥青树脂。

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photoreaction and thermal stability of the electron transfer photochromism system composed of n, n, n ', n'-tetramethyl-p-phenylenediamine ( tmpd)/ electron acceptor were studied in solutions and polymer films.

研究了由N，N，N′，N′-对四甲基苯二胺（TMPD）/电子受体组成的光致电子转移变色体系，及其在溶液中和高分子膜中的光反应和热稳定性。

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conducting polypyrrole films ( ppy) doped with p-toluenesulfonate ( tos-), clo-4, and cl-were electro-chemically prepared, respectively.

用电化学方法制备了分别以对甲基苯磺酸根（TOS-），高氯酸根（ClO4-）和氯离子（Cl-）掺杂的聚吡咯（PPy）膜。

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2-phenyl-1, 3-propanediol was prepared from the reduction of methyl tropate with sodium borohydride in organic solvent in more than 75% yield.

用硼氢化钠作为还原剂，在有机溶剂中还原α羟甲基苯乙酸甲酯，得到2苯基1,3丙二醇（PPD），产率大于75%。

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a novel method for reducing aldehydes to the corresponding alcohols with high selectivity in supercritical carbon dioxide using water as hydrogen donor and zn dust as electron donor has been developed.

报道了在超临界CO2中，实现氢转移反应的新方法，这一方法以水为氢授体，锌粉为电子授体，高选择性地还原对甲基苯甲醛为相应的醇。

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different pore size were adjusted by adding 1,3,5-trimethylbenzene ( tmb) as assistant agent.

加入不同量的1,3,5-三甲基苯（TMB）辅助剂来调整膜的孔径。

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this article compares methyl benzotriazole with benzotriazole in terms of their performance of anticorrosion, anti-corrosion efficiency in different ph condition, thermal stability and chlorine resistance.

比较了甲基苯三唑与苯三唑的缓蚀性能，不同pH值条件下的缓蚀效率、热稳定性和抗氯性能。

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effects of 7,12-dimethylbenz [ a] anthracene on the levels of ornithine decarboxylase and transforming growth factor-β mrna in mouse epidermis

二甲基苯蒽对小鼠皮肤表皮鸟氨酸脱羧酶和转化生长因子βmRNA水平的影响

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the new process study on the mixed c_9 aromatics being oxidized into methyl carboxyl phthalate through liquid phase oxidation with air

混合C9芳烃空气液相氧化制甲基苯二酸酯新工艺研究

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theoretical study on pyrolysis mechanism of toluene

甲基苯热裂解机理的理论研究

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dft kinetic study of the pyrolysis mechanism of toluene used for carbon matrix

碳源甲基苯热裂解机理的密度泛函动力学研究

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objective to compare and observe the effects of tropisetron mesylate and metoclopramide in the prevention of chemotherapy-induced digestive side effects.

目的对比观察甲磺酸托烷司琼与甲氧氯普胺两组药物控制化疗引起的胃肠道反应的疗效及其不良反应。

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