查询词典 hydroxybenzoic acid

DMBQ, resorcin, ferulic acid, and hydroxybenzoic acid were effective chemical signal substances in the inducement of haustorium, but the haustorium formation rate was only 3.3%.

适当浓度的2，6-二甲氧基对苯醌、间苯二酚、阿魏酸和对羟基苯甲酸均可诱导肉苁蓉种子萌发形成吸器，吸器形成率最高为3.3%。

The method has been successfully applied to the determination of salicylic acid and resorcinol in Dermatitis Clear Tincture and p-hydroxybenzoic acid in apple juices.

应用此方法，成功测定了皮炎呤酊剂中的间苯二酚和水杨酸以及苹果汁中的对-羟基苯甲酸。

The results indicated that the benzoic acid and ρ-hydroxybenzoic acid had autotoxicity effects on watermelon seed germination and seedling growth.

表明苯甲酸、对-羟基苯甲酸对西瓜种子发芽和幼苗生长均具有自毒作用。

In this paper,sand culture experiment was carried out to study the effect of cinnamic acid,p-hydroxybenzoic acid stress on photosynthesis of cucumber seedlings.

采用砂培试验研究了有机肥对外源自毒物质苯丙烯酸、对羟基苯甲酸胁迫下黄瓜光合作用的影响。

Results:From the extraction of 95% in the green peel of Juglans Mandshurica,we got five compounds,which were respectively:β-sitosterol;juglone;3,5-dimethoxy-4-hydroxybenzoic acid;regiolon;succinic acid 4-oxyethyl-5-hydroxide-β-tetralone;...

结果：从核桃楸的乙醇提取物中分离鉴定了5个化合物，分别是：β-谷甾醇；胡桃醌；3， 5-二甲氧基-4-羟基苯甲酸；regiolon；琥珀酸；4-乙氧基-5-羟基-β-四氢萘酮；胡桃酮。结论：化合物Ⅲ、Ⅶ、Ⅵ为首次从核桃楸青皮中分离得到，Ⅶ、Ⅵ为新的天然化合物。

This research utilizes the method of organic synthesis to put different amount of aminophenol into hydroxybenzoic acid or caffeic acid so as to produce a series of high yield of polyhydroxy benzamides (1~40).Through the following different activity tests, discussing the applied value of cosmetics.Ⅰ.

摘要 本研究主要利用有机合成方法，将具有不同数量及在不同位置之羟基取代之安息香酸及咖啡酸分别与胺基苯酚化合物进行醯胺化反应，得到一系列高产率之多酚醯胺类衍生物(1~40)，经由下列不同活性测试方法，探讨其化菻~上的应用价值。

For further understanding the effect of the strain on K-bearing silicate mineral, an experiment with KO2 strain cultured in nitrogen-containing and nitrogen-free medium was conducted. By putting mineral powders into the medium and measuring the concentration of capsular polysaccharides, we concluded that the strain can accelerate the weathering rate of silicate minerals. The results showed that the polysaccharides secreted by the strain in the growth process could help the bacterial to adhere to the mineral surface effectively, and created the bacterium-mineral complex, which formed a mircro-enviorment avail the release of potassium. Another result was that there was higher level of Carbonic Anhydrase activity, which revealed that some exo-protein or enzyme produced by the bacterial had postive impact on the process of releasing potassium ion. We carried out the bacterial fermentation for larger scale production of the bacterial secretion, which was used to sperate, and identify the small molecules related to the mineral-bacterial interaction. After the analysis, it was found that the strain can produce many kinds of small molecules, such as 2-Hydroxybenzoic acid, 4-Hydroxyphenylacetic acid, methyl-4-hydroxybenzoate, etc.

分别将菌株接入含有不同矿粉的培养基中培养，检测其在有氮、无氮培养基中荚膜多糖含量的变化，并在以钾长石和黑云母为矿源的情况下，比较研究了菌株在有氮、无氮培养基中对矿物的风化能力，通过一系列的实验，证实胶质芽孢杆菌在生长过程中所分泌的粘稠胞外聚糖可帮助细菌有效黏附在矿物表面，形成细菌-矿物复合体，并改变及维持该复合体内部的微环境，有助于该菌的解钾作用，而且细菌分泌的胞外蛋白质在该菌对含钾硅酸盐矿物的解钾作用过程中发挥重要作用；将胶质芽孢杆菌接入以钾长石和黑云母为矿源的有氮、无氮培养基中培养，检测到该菌碳酸酐酶活性的变化，并进行批量发酵后小分子酸性分泌产物的提取、分离、纯化与鉴定等方面的研究，结果表明，该菌可产生2-羟基苯甲酸，4-羟基苯乙酸，4-羟基苯甲酸甲酯等小分子物质。

To clarify the relationships between phenolic compounds and continuous cropping obstacle of Rehmannia glutinosa, the accumulation amounts of ferulic acid, vanillic acid, vanillin, and β-hydroxybenzoic acid in continuously cropped R. glutinosa soil were measured, and the effects of these four phenolic acids on R. glutinosa growth were studied with water culture.

为了探究酚酸物质与地黄连作障碍之间的关系，检测了重茬地黄土壤中阿魏酸、香草酸、香草醛和对羟基苯甲酸等4种酚酸物质的积累量，并通过水培条件下添加酚酸，研究了4种酚酸对地黄生长的影响。

An ivestigation on the influence of the ferulic acid and p hydroxybenzoic acid on the nitrogen mineralization in the soil was carried out.

实验研究阿魏酸、对羟基苯甲酸对土壤中的氮矿化的影响，分析了麦秸和麦秸在土中腐解时产生的酚酸与土壤中氮矿化作用的相关性。

Moreover, MeJA induced defense genes, such as pathogenesis-related proteins (PR2a), phenylalanine ammonia-lyase, BX9, and TPS. MeJA also increased DIMBOA and Vannillic acid content of leaves and roots significantly but leaf p－Hydroxybenzoic acid concentration was decreased significantly and Protocatechuric acid was produced in roots only.

1MeJA叶片处理能诱导叶片和根系中丙二烯氧化物环化酶基因、糖基转移酶（BX9）基因、苯丙氨酸转氨酶基因的表达，使叶片和根系中丁布含量升高，同时，6μL/L MeJA处理使第二叶中原儿茶酸含量显著降低，诱导根中产生原儿茶酸，使第二叶中香草酸含量和根中未知物质峰面积显著增大。

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。