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A feeding trial was conducted to study the effects of acidifier on the growth and digestive enzyme activity of common carp fed by diets containing compound acidifier with different levels (0, 0.2%, 0.3%).

在鲤鱼基础饲料中,分别添加不同梯度的复合酸化剂(质量分数分别为0、0.2%、0.3%),研究复合酸化剂对其生长和消化酶活性的影响。

A photoresist composition including a polymer is disclosed, wherein the polymer includes at least one monomer having the formula: wherein, R1 is selected from H, linear, branched or circular alkyl with 1-20 carton atoms, linear, branched or circular alkyl with 1-20 C atom, which is perfluorinated or semi-perfluorinated; and CN; R2 is alicyclic group with 5 or more carbon atoms; X is selected from methylene, aether, ester, amide and the connecting part of the carbonate; R3 is linear or branched alkylene with one or more carbon atoms or perfluorinated or semi-perfluorinated linear or branched alkylene; R4 is selected from H, CH3, CF3, CHF2, CH2F and perfluorinated or semi-perfluorinated aliphatic group; R5 is selected from the CF3, CHF2, CH2F and perfluorinated or semi-perfluorinated substituted and unsubstituted aliphatic group; n is 1 or higher integer; OR12 is OH or at least an acid unstable group selected from the tert-alkyl carbonate, tert-alkyl ester, tert-alkyl aether, acetal and ketal.

本发明公开了一种包含一种聚合物的光刻胶组合物,该聚合物包括至少一种具有下列结构的单体:其中,R 1 选自氢、具有1~20个碳原子的线形、支化或环状烷基、半氟化或全氟化的具有1~20个碳原子的线形、支化或环状烷基、以及CN;R 2 为具有5个或更多个碳原子的脂环基团;X为选自亚甲基、醚、酯、酰胺和碳酸酯的连接部分;R 3 为具有1个或多个碳原子的线形或支化亚烷基或者半氟化或全氟化的线形或支化亚烷基;R 4 选自氢、甲基(CH 3 )、三氟甲基(CF 3 )、二氟甲基(CHF 2 )、氟代甲基(CH 2 F)、以及半氟化或全氟化的脂族基团;R 5 选自三氟甲基(CF 3 )、二氟甲基(CHF 2 )、氟代甲基(CH 2 F)、以及半氟化或全氟化的取代或未取代的脂族基团;n为1或更大的整数;OR 12 为OH或者选自叔烷基碳酸酯、叔烷基酯、叔烷基醚、缩醛和缩酮的至少一种酸不稳定基团。

The quaternary ammonium salt of quinoline synthesized by alkyl halide and quinolin etc.,can be used as corrosion inhibiter during acidizing treatment of oil well when it is compounded with organic amine,suitable solvent and surfactant.

以烷基卤化物与喹啉等原料合成的喹啉季铵盐,当其与有机胺、适当溶剂、表面活性剂复配后,可作为油井酸化作业的酸化缓蚀剂。

The foam ed acid is often used to acidize in oil and water wells.

中外油田常用泡沫酸对油水井进行分流酸化,起泡剂的性能是影响泡沫酸酸化效果的关键因素。

There are some midst matters in wastewater, for removal of these matters the electrolyze time should exceed 30 min. The experimental results show that the bipolar packed bed cell has best treatment efficiency of phenol wastewater under condition that voltage is 10V, electrolyses time is 30 min, and velocity of flow is 1.03 cm/min.Basic on the study on treating of phenol wastewater, this paper carry on a research on treating of circuitry board film wastewater by bipolar packed bed cell.

本文在以上处理苯酚废水研究的基础上,论文研究了BPBC处理两种不同浓度得脱膜废水,试验结果表明,对于浓度较高的酸化气浮-光酚顿的出水,在外加氧化剂双氧水后,最佳处理工艺:槽电压8V,实际电解时间60min,双氧水的投加量为1倍理论药量,pH值为3,COD的去除率达到60%;在酸化气浮过程采用酸铜废液调节pH值将会降低COD的去除率。

The hydrogenation and methyl esterification of furoic acid over Pd-Ni/γ-Al2O3 catalysts was investigated in fixed bed micro-reactor under different conditions such as reaction temperature,pressure,H2 space velocity,space velocity of furoic acid and methol,ratio of H2 and furoic acid and so on.

以糠酸、甲醇、氢气为原料,采用连续流动固定床微反应器,Pd-Ni/γ-Al2O3为催化剂,使糠酸一步加氢甲酯化生成α-四氢糠酸甲酯。研究了反应的温度,压力,气、液体流速,进料流量等因素对催化反应的影响。结果表明:在1.5MPa,250℃,氢气空速3300 h-1,液体空速3.0 h-1(氢油比为50)时,糠酸转化率为96.6%,四氢糠酸甲酯的选择性97.2.0%,产率94.0%。催化剂稳定性较好,连续运转280小时后未见活性下降。该反应体系活性高,选择性好,反应压力低,催化剂性能稳定,操作简单,产物易分离

The production process of fatty acid methyl ester with high acid value acidulated oil and fatty acid replaced superior quality fat and oil by high temperature gas phase method and supplemental ester translation process was also introduced.

对间歇式酯化-酯交换工艺进行了具体分析,并着重介绍了采用高温气相法及补充酯交换工艺,以高酸值酸化油和脂肪酸代替高档油脂生产脂肪酸甲酯的生产工艺。

For the two digestions of material proportion 83∶17 and 62∶38)with pH adjustment to 7.2 at the acidification stage, the stable pHs for methane production were 7.4~8.0, total VFA concentrations were 500~900 mg·L-1, propionic acid concentrations were 100~550 mg·L-1, and no ethanol production was detected.

实验结果表明,与单独利用食物垃圾以及未调节酸化阶段pH的厌氧消化相比,调节酸化阶段pH=7.2的食物垃圾与废纸联合厌氧消化能够避免挥发性脂肪酸抑制、保证消化稳定性并提高消化性能。

The object of this study is to prepare of soy oleic acid from the acidic oil , which was made from soap stock by acidification with sulfur acid, followed by hydrolysis, distillation and emulsification separation.

本研究利用皂脚酸化得到的酸化油进行水解,得到粗制脂肪酸,然后通过蒸馏、乳化分离得到所需的大豆油酸产品。

The main component dehydroabietic acid and little component abietic acid, neoabietic acid, levopimaric acid and pulustic acid of a few types disproportionated rosin were determinated quantitatively by selecting the proper order of derivative, differential wavelength difference, scanning rate and quantitative method.

通过选择合适的求导阶数、微分波长差、扫描速度和定量方法,对不同批号的歧化松香中的主成分脱氢枞酸和微量组分枞酸、新枞酸、左旋海松酸及长叶松酸进行了测定(其中左旋海松酸和长叶松酸测定的是合量),实验结果令人满意。

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