查询词典 acid-base

Objective Applying randomized terminal linker-dependent PCR to detect the DNA damage of ras gene induced by dichloroacetic acid.

目的研究二氯乙酸(dichloroacetic acid，DCA)对ras基因的DNA损伤作用，探讨其致癌作用分子机制。

II. Oxidation of α,β-Unsaturated Ketones with Hypervalent Iodine Reagent Literatures reported that lead acetate-borontrifluoride etherate (LTA/BF3-Et2O) can transform α,β-unsaturated ketone to β,γ-unsaturated carboxylic acid ester through an one-step oxidative rearrangement reaction. Our research along this line indicated that hypervalent iodine reagents can also affect the same reaction.

II。 高价碘对α，β-不饱和酮之氧化研究先前已有文献指出用leadacetate-borontrifluoride etherate (LTA/BF3-Et2O)做氧化剂，可以经由一步的重组氧化反应把α，β-不饱和酮(α，β-unsaturated ketones)氧化成β，γ-不饱和碳酸酯(β，γ-unsaturated carboxylic acid esters)衍生物。

OBJECTIVE: To assess the natural interaction between gambogic acid and fluracil (5-FU) in cancer treatment, and investigate the influence of GA on cell apoptosis and drug-associated gene expression.

目的：利用中效原理评价藤黄酸(gambogic acid， GA)与5-氟尿嘧啶(5-FU)之间的相互作用，并探讨其相互作用的可能机制。

Thus hexadecanoic acid is related to the 16c hydrocarbon, hexadecane.

这样，hexadecanoic acid十六烷烃即是与16C的烃hexadecane相应的脂肪酸。

The result showed that HWG possessed antioxidative characteristics including α,α-diphenyl-β-picryl hydrazyl, 2,2'-azino-bis (3-ethylbenzthiazoline -6-sulphonic acid) and superoxide anion radical-scavenging effects, Fe2+-chelating ability, reducing power and lipid peroxidation inhibition.

随著HWG浓度的增加，其清除自由基包括superoxide anion radical、α，α-diphenyl-β-picryl hydrazyl、2，2'-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid 、还原力与螯合亚铁能力也随之增加，且HWG清除超氧阴离子及螯合亚铁的效力优於标准品Vit C与Trolox。

This binding mode is different from those observed in the crystal structure of complexes formed by a histone deacetylase-like protein with trichostatin A or suberoylanilide hydroxamic acid.

这种结合方式与已经阐明的组蛋白去乙酰酶类似蛋白与曲古柳菌素A(trichostatin A，TSA)和suberoylanilide hydroxamic acid形成的复合物晶体结构中配体与酶的作用方式完全不同。

Objective An inhibitor of histone deacetylase enzymatic activity, SAHA (suberoylanilide hydroxamic acid), was used to investigate its effects on the differentiation of the human hepatoma SMMC-7721 cells.

目的：应用分化诱导剂SAHA(Suberoylanilide hydroxamic acid)处理体外培养的人肝癌SMMC-7721细胞，观察鉴定SAHA对人肝癌细胞的分化诱导作用，并初步探讨其作用机理。

Insecticidal activities of 5-aminolevulinic acid on Oxya chinensis and the effect on activities of three enzymes were studied.

研究5-氨基乙酰丙酸(5-aminolevulinic acid，ALA)对中华稻蝗的杀虫活性及对3种酶活性的影响。

A method of high performance liquid chromatography-fluorescence detection for the simultaneous determination of kynurenine and kynurenic acid in serum was developed.

建立了在线衍生、双波长高效液相色谱-荧光检测器同时检测血清中犬尿氨酸(kynurenine， Kyn)和犬尿喹啉酸(kynurenic acid， KYNA)含量的方法。

The fastness will be improved by pre treating the material with natural addition agent. The dye is dissolved in soft warm alkaline water and dying is carried out by treatment with metal salts for pink shade. The main coiouring component is Laccaic acid.

先用植物助剂对织物原料进行预先处理，纺织品的色彩牢度会增强，此染料可以在软质碱性温水中溶解，在印染时加入盐，可获取粉红色；其色素主要成份是Laccaic acid。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。