A gas chromatographic analysis method was established in the study of the conversion of acrolein to 1,3-propanediol by hydration and hydrogenation.

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Studies on Production of Cyclohexanol by Hydration of Cyclohexene Ⅰ.

環(huán)己烯水合制備環(huán)己醇的研究Ⅰ欧美强奸乱码中文字幕。

Coleophora obducta (Lepidoptera: Coleophoridae) is a defoliator of larch and exclusively latent in leaves. This article tested behavioral responses of C.

運(yùn)用觸角電位儀和"Y"型嗅覺儀測(cè)試鞘蛾對(duì)落葉松9種揮發(fā)物黄a淫荡视频，即R-α-蒎烯、S-α-蒎烯18以下禁止岁观看网站、β-蒎烯91综合视频在线、羅勒烯、水芹烯、3-蒈烯欧美二区在线综合亚洲欧美网站、月桂烯1024手机看片啪爱爱、莰烯和葉醇的EAG和行為反應(yīng)。

Bromoethyl acetate was synthesized by reacting ethylene glycol with an aqueous solution of hydrogen bromide(47%) and acetic acid(1:1:1.3) in the water-carrying agent, which formed an azeotrope with water but not with 2-bromoethyl acetate.

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Objective: To explore the effects of Paecilomyces Gunnii extracts of water-alcohol on hyperlipemia in rats.

目的：探討古尼擬青霉水-醇提取物對(duì)大鼠高脂血癥的影響三级片黄色网站在线无码免费观看。

Coleophora obducta (Lepidoptera: Coleophoridae) is a defoliator of larch and exclusively latent in leaves. This article tested behavioral responses of C.

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The process industrial synthsis of tert-dodecyl mercaptan from dodecylene and hydrogen sulfide with aluminium trichloride as catalyst was introduced, which consists of four units including the preparation of catalyst, purification of raw dodecylene, additive reaction and separation of reaction product.

介紹了以無水三氯化鋁絡(luò)合物為催化劑，十二烯和硫化氫直接加成法生產(chǎn)叔十二烷基硫醇的工業(yè)試驗(yàn)工藝国产一级婬片a免费播放口。

The relaxation strength obtained from Cole-Cole plots (1) is associated with the amount of water molecules subjected to electric conduction, while the obtained from Cole-Cole plots (2) mainly represents the total amount of methylol groups and adsorbed water molecules possible to reorient.

由 Cole-Cole 圓弧則(1)得到的弛豫強(qiáng)度與進(jìn)行離子導(dǎo)電性的水分子的數(shù)量有關(guān)黑人操屄，而由 Cole-Cole 圓弧則(2)得到的弛豫強(qiáng)度則代表木材中可能進(jìn)行回轉(zhuǎn)取向運(yùn)動(dòng)的伯醇羥基和吸著水分子的總數(shù)。

The optimum condition of preparing process were obtained: the amount - of - substance ratio of sodium hydroxide and eerie sulfate tetrahydrate was 4.8:1 ,the quantity of PEG was 8 mL in reaction and 7 mL in washing, absolute alcohol was 10 mL in washing, irradiation time was 6 min, constant microwave irradiation pressure was 0.14 MPa, microwave power was 232 W, the ultrasonic wave dispersing time was 10 min and the microwave drying time was 10 min.

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According to Johnson's Rule and IR spectra, their possible structures are suggested. The bonding parameters of those complexes are calculated by ESR parameters. And the crystal field parameters are calculated by using electronic spectral data. It can be seen that the vanadyl complexes in the solution are ionic complexes and that the α〓 values of those complexes decrease following the increasing of the N donor replacing the O donor of water on the equatorial plane in those complexes. This means that the covalent bonding between vanadium and ligand increases as Ser, Phen or Bipy replace water ligands. The results show the competitive coordinate law that the coordination reactivity of Phen and Bipy is much stronger than that of Ser. The simulation program of ESR is compiled by the theory of ESR in the present work.

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