查询词典 hydroxybenzoic acid

In order to develop new methods to control water bloom, the allelopathic effects of p-hydroxybenzoic acid on Microcystis aeruginosa Kueitz, as well as its acute toxicity toward Cyprinus carpio Linnaeus, were studied.

为了寻找治理水华的有效方法，研究了对羟基苯甲酸对铜绿微囊藻生长的影响以及对鲤鱼的毒性作用。

The nitrophenol and hydroxybenzoic acid isomers imprinted monolithic columns were prepared by in-situ polymerization.

采用原位聚合法制备了硝基苯酚和羟基苯甲酸位置异构体的分子印迹整体柱。

The nitrophenol and hydroxybenzoic acid isomers imprinted monolithic columns were prepared by in-sim polymerization.

采用原位聚合法制备了硝基苯酚和羟基苯甲酸位置异构体的分子印迹整体柱。

The products were identified by IR,NMR,MS and elemental analysis. In our method,K.OH was used in place of NaOH to synthesize benzyl ester of 3,5-dimethyl-4-hydroxybenzoic acid,2',6'-dimethyl-4'-(n-succinimidyloxycarbonyl) phenyl-acridinium-9-carboxylate was purified on a silica gel column with chloroform/ethylacetate(4:l,v/v) as eluent and further purified by triturating with hexane/acetone(2:l,v/v).The luminescence produced by DMAE-NHS is a flash light with maximumemission at 0.4s and decay half-time of 0.9s. The luminescence intensity is 6.11x10 cps/mol,which is affected by the composition of trigger and surfactant.

DMAE·NHS的合成是本论文的关键和难点，我们对文献方法进行改进：文献方法用氢氧化钠与3，5-二甲基-4-羟基苯甲酸反应制得3，5-甲基-4-羟基苯甲酸钠，再用3，5-二甲基-4-羟基苯甲酸钠与苄氯作用制备3，5-二甲基-4-羟基苯甲酸苄酯，我们用氢氧化钾代替氢氧化钠，使合成取得成功；在合成2'，6'-二甲基-4'-苯基-吖啶-9-甲酸酯时，文献方法对粗产品进行两次硅胶柱层析纯化，第一次柱层析用氯仿/乙酸乙酯(4：1，Ⅴ：Ⅴ)作溶剂和淋洗剂，第二次柱层析用己烷/丙酮(2：1，Ⅴ：Ⅴ)作溶剂和淋洗剂，按照文献方法得到的不是所需要的化合物，我们只进行第一次柱层析纯化，然后用己烷/丙酮(2：1，Ⅴ：Ⅴ)进行研磨，过滤，洗涤，除去溶于己烷/丙酮(2：1，Ⅴ：Ⅴ)的部分，得到所需要的产品。

The results showed that p-hydroxybenzoic acid has potential to be developed into an algicide.

因此，对羟基苯甲酸可望被开发出一种高效低毒的生物杀藻剂。

Nd 2O 3 used as solid catalyst for the preparation of nipagin esters with p hydroxybenzoic acid and alcohol has been studied.

研究了以三氧化二钕为固体催化剂，由对羟基苯甲酸和乙醇合成尼泊金乙酯。

The solubility of 2 -hydroxybenzoic acid was measured in supercritical carbon dioxide with and without cosolvents, such as cyclohexane and ethanol,within a temperature range of 308.15-328.15 K,and a pressure range of 10.0-24.0 MPa,by flow method.

该模型迭代速度快，需要的物性参数少。用流动法测定了2-羟基苯甲酸在温度308.15，328.15 K、压力10.0，13.0，16.0，20.0，24.0 MPa条件下，在超临界CO2中及有夹带剂环己烷、乙醇存在时的溶解度数据。

The thermal behavious and structure of p(hydroxybenzoic acid/2-hydroxy-6-naphthoicacid)polyarylate /polyester blend fibers were investigated by means of DSC thermal analysis.

利用热分析的方法对聚（对羟基苯甲酸／6－羟基－2－甲酸萘［p（HBA／HNA］／聚对苯二甲酸乙二酯共混纤维的结构进行了研究。

Methods Glucose oxidase acted on saliva glucose,the generated hydrogen peroxide was measured by use of peroxidase with 2,4,6-tribromo-3 hydroxybenzoic acid and 4-aminoantipyrene to give a pink product that absorbed maximally at 510nm.

方法用2，4，6-三溴-3-羟基苯甲酸取代葡萄糖氧化酶测定法的苯酚，用于唾液葡萄糖的测定。并观察正常人与糖尿病患者血糖浓度和唾液葡萄糖含量之间的关系。结果186例健康人晨空腹唾液葡萄糖浓度为8.14±1.78mg/L。

UHMWPS is blended with low molecular weight polystyrene and hydroxybenzoic acid/PET copolyester (HBA60/PET), a thermotropic liquid crystalline polymer , to improve its processability.

为改善UHMWPS的加工性，将其与低分子量聚苯乙烯及热致液晶高分子(TLCP：HBA60/PET)共混，研究了共混物的流变与加工性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。