查询词典 acid

By reactions of p-hydroxybenzoic acid with the chlorides of adipic acid, suberic acid, sebacic acid and 1,10-decanedicarboxylic acid respectively four new diacids, and then their dich-lorides, were obtained. The four diacids were found to be thermotropic.

将己二酸、辛二酸、癸二酸、1，10-十二烷基羧酸经酰氯化后，分别与对羟基苯甲酸合成，得到了四种二元羧酸以及与其相应的四种二元酰氯，并发现前者具有热致液晶性。

An experiment was conducted to study the antifeeding effects of ethanol, ethyl acetate and water solutions of linoleic acid, pimelic acid, suberic acid, azelaic acid, and n-nonanoic acid against imago of Pissodes punctatus. Absolute antifeeding rate and relative antifeeding rate were used to appraise the antifeeding effects of organic acids.

为了寻找华山松木蠹象(Pissodes punctatus Langor et Zhang)环境友好的防治方法，研究了亚油酸、庚二酸、辛二酸、壬二酸、壬酸的酒精溶液、乙酸乙酯溶液和水溶液对华山松木蠹象成虫的拒食作用，采用了完全拒食虫率与相对拒食率来评价有机酸的拒食效果。

The DSC results showed that calcium carbonate,sodium benzoate and terephthalic acid were the nucleating agents of polypropylene with high thermal stability of the nucleating effect,while the thermal stability of nucleating effect of pimelic acid,suberic acid,azelaic acid,and the two component nucleating agents suberic acid/calcium carbonate and azela...

研究了碳酸钙、苯甲酸钠、对苯二甲酸和脂肪二元酸：庚二酸、辛二酸、壬二酸及其与碳酸钙组成的双组分成核剂对聚丙烯结晶成核效果的热稳定性。

Including: HM-165701, HM-165607, HM-165703, whiskey flavoring, brandy flavoring, sulfurous acid, citric acid, PVSP, potassium sorbate, aspartame, glycerol, Citric Acid monohydrate , citric acid, anhydrous citric acid, tannin, bentonite, pectinase, AK sugar, pepper refined, Sodium Cyclamate, etc..

包括：HM-165701、HM-165607、HM-165703、威士忌香精、白兰地香精、亚硫酸、柠檬酸、PVSP、山梨酸钾、阿斯巴甜、甘油、一水柠檬酸、无水柠檬酸、单宁、皂土、果胶酶、AK糖、辣椒精、甜蜜素等。

In order to study the effects of acid catalysts on wood liquefaction in phenol, the liquefaction of wood powder from Chinese fir and poplar in the presence of phenol using several relatively weak acids as catalysts, such as phosphoric acid (85%), sulfuric acid (36%), hydrochloric acid (37%) and oxalic acid (99%), were investigated.

为了探讨酸性催化剂对木材苯酚液化的影响，该研究采用磷酸(85%)、低浓硫酸(36%)、盐酸(37%)、草酸(99.5%)4种弱酸性无机酸，在不同温度下进行了木材的液化试验。

The isomerization of resin acid was studied by HCl catalysis method, high temperature catalysis method and microwave-assisted method. Separation of abietic acid was analyzed with recrystallization method and many organic amine salt methods; Using abietic acid separated from resin acid as raw materials, 6 compounds of abietic-type resin acid derivetives were synthesized.

从产率、纯度和成本等方面分析对比了改进的二戊胺盐法、A胺盐法、B胺盐法和文献报道的二戊胺盐法分离提纯枞酸；以得到的枞酸为原料，进行氧化合成，得到6种枞酸的氧化衍生物，通过柱分离得到2种枞酸氧化衍生物纯品，并测试了其抑菌和对家蝇的拒食活性。

The same year with the Institute of Fine Chemicalto develop fine chemical products - o-aminobenzoic acid, and 1.4 million yuan of funds into an annual output of 200 tons built anthranilic acid production line, by the province for the Prohibition of Chemical Weapons Convention to fulfill the work of leadership Office approval in April 2002 with an annual output of 200 tons of the scale of operation, product quality compared with similar products in the domestic leading level, in October 2002 to carry out technical transformation again, the scale of production from 200 tons; years expanded to 500 tons; in size, and product performance, production capacity of plant expansion requirements, in 2003 officially put into operation. The end of 2004 our company moved to Sequoia small city are on the 1st, covering over 20,000 square meters, anthranilic acid after the removal of the production line expanded to 1200 tons; in size, at the same time developed a 2,2 - Dithio Benzophenone acid, benzo-iso thiazoline -3 - one, dichloro-acetonitrile, thiophene tons of ketones, a series of inter-amino benzoic acid, etc. Fine Chemical Products.

同年公司与上海桑迪精细化工研究所合作开发精细化工产品—邻氨基苯甲酸，并投入140万元资金建成了年产200吨邻氨基苯甲酸生产线，经省履行禁止化学武器公约工作领导小组办公室批准于2002年4月以年产200吨的规模投入运行，产品质量与国内同类产品相比处于领先水平，2002年10月公司再次进行技改，把生产规模由原来的200吨；年扩到500吨；年规模，且产品性能、生产装置能力达到扩产的要求，2003年正式投入运行。2004年末我公司搬迁至杉城小均1号，占地2万多平方米，搬迁后邻氨基苯甲酸生产线扩大到1200吨；年规模，同时开发了2，2-二硫代二苯甲酸、苯并异噻唑啉-3-酮、二氯乙腈、噻吨酮、间氨基苯甲酸等一系列化工精细产品。

The structural and photocatalytic properties of TiO〓 as well as surface acidity were greatly improved by sulfation. SO〓〓/TiO〓 solid superacid with Hammett constant Ho less than -12.14 was prepared by treating the TiO〓 with 1.0mol. L〓 sulfuric acid solution and then calcining at 450℃ for 3h. When compared to unmodified TiO〓, the SO〓〓/TiO〓 superacid catalyst exhibited higher anatase content, smaller crystal size, higher specific surface area, centralized pore size distribution, and the blue-shifted band edge of uv-vis adsorption spectra. Furthermore, the SO〓〓/TiO〓 superacid also showed excellent reaction activity and stability for CH〓Br photocatalytic decomposition even under the moist reaction conditions. The apparent quantum efficiency of SO〓〓/TiO〓 was 10 times of that of TiO〓 catalyst for the photocatalytic degradation of bromomethane. Therefore, the SO〓〓/TiO〓 superacid catalyst is promising for practical application in environmental remediation.It was found that both L and B acid sites exist on SO〓〓/TiO〓 photocatalyst while only L acid sites on TiO〓 photocatalyst. On the basis of experimental results, the synergistic model of superacidic centers was proposed for SO〓〓/TiO〓 photocatalyst to explain the photocatalytic behavior and the mechanism of superacidifing effects, assuming that the adjacent L and B acid sites induced by SO〓〓 comprise cooperatively the superacidic center on superacid photocatalyst. The group cooperation of the superacidic center could strengthen the surface acidity, increase surface acid sites and the adsorbtion of O〓, promote separation of photogenerated electron-hole pair, enhance the interfacial transfer of charges and reversibility of water adsorption. Consequently the excellent photocatalytic activity, reaction stability and resistibility to humidity of SO〓〓/TiO〓 superacid photocatalyst may attributed to the group cooperated effect of the superacidic center on the photocatalyst.

研究结果表明：SO〓〓与TiO〓表面的结合为螯合式双配位结构；TiO〓光催化剂表面经H〓SO〓浸渍处理后，提高了表面酸性，改善了催化剂结构和光催化性能，当H〓SO〓浸渍浓度为1.0mol.L〓、烧结温度为450℃时，可制得SO〓〓/TiO〓超强酸催化剂(H〓＜-12.14)，其结构和光催化活性得到明显改善，与TiO〓相比，SO〓〓/TiO〓光催化剂的锐钛矿含量高、晶粒小、BET比表面积大、孔径分布集中、光谱吸收边蓝移，具有优异的光催化氧化活性、稳定性及抗湿性能，光催化降解溴代甲烷的表观量子效率比TiO〓催化剂提高了一个数量级，是一种有实际应用前景的高效光催化剂；由此提出了SO〓〓/TiO〓超强酸催化剂表面集团协同作用的超强酸中心模型，认为在SO〓〓/TiO〓超强酸催化剂表面，由SO〓〓诱导的相邻L酸中心和B酸中心组成了集团协同作用的超强酸中心，其集团协同作用显著地增强了催化剂表面酸性、增大了表面酸量及O〓吸附量、促进了光生电子和空穴的分离及界面电荷转移，具有可逆吸附水的性能，是SO〓〓/TiO〓超强酸催化剂具有优异的光催化氧化活性、很好的活性稳定性及抗湿性能的重要原因。

Result: Seven phenolic compounds were identified as rosmarinic acid(1),gallic acid(2),gentisic acid 5-O-(6′-O-galloyl)-β-D-glucopyranoside(3),caffeic acid(4),p-coumaric acid(5),ethyl caffeate(6) and acteoside(7),respectively.

结果：分离得到7种酚类化合物，经结构鉴定为：迷迭香酸(1)，没食子酸(2)，龙胆酸5-O-(6′-O-没食子酰基)-β-D-吡喃葡萄糖苷(3)，咖啡酸(4)，对香豆酸(5)，咖啡酸乙酯(6)和acteoside(7)。

Among them, 3 strains isolated from yellow water could convert lactic acid into ethanol and most strains isolated from Daqu could convert lactic acid into flavoring compositions such as ethanol, isobutyric acid, caproic acid or isovaleric acid etc.

其中，从黄水和大曲中分离到多种降乳菌，黄水中的3株菌可将乳酸转化为乙醇，大曲中的多数降乳菌可转化乳酸为异丁酸、己酸、异戊酸、乙醇等风味成分。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。