查询词典 acid-base

The six kinds of nanoparticles water dispersion were as follows:rotenone/carboxymethyl chitosan-grafted-ricinoleic acid(Rot/CMC-g-RA), azadirachtin/carboxymethyl chitosan-grafted-ricinoleic acid(Aza/CMC-g-RA),capsaicin/ carboxymethyl chitosan-grafted-ricinoleic acid(Cap/CMC-g-RA),rotenone/ricinoleic acid sodium,capsaicin/ricinoleic acid sodium,azadirachtin/ricinoleic acid sodium.

分别为：鱼藤酮/羧甲基壳聚糖接技蓖麻油酸共聚物(Rot/CMC-g-RA)、辣椒碱/羧甲基壳聚糖接技蓖麻油酸共聚物(Cap/CMC-g-RA)和印楝素/羧甲基壳聚糖接技蓖麻油酸共聚物(Aza/CMC-g-RA)纳米粒子水分散制剂，以及鱼藤酮/蓖麻油酸钠、辣椒碱/蓖麻油酸钠和印楝素/蓖麻油酸钠纳米粒子水分散微乳液。

The important role of hydroxycinnamic acids,i.e.,caffeic acid, chlorogenic acid,sinapic acid,ferulic acid,3-hydroxycinnamic acid (3-HCA) and 4-hydroxycinnamic acid(4-HCA) as the pBR322 plasmid DNA-Cleaving agents in the presence of Cu ions was investigated.

我们研究了羟基肉桂酸衍生物即咖啡酸、绿原酸、芥子酸、阿魏酸、3-羟基肉桂酸(3-HCA)和4-羟基肉桂酸(4-HCA)在Cu存在下诱导pBR322质粒DNA链断裂损伤情况，结果发现HCAs的促氧化活性与它们的分子结构有密切的关系，具有邻二羟基结构和邻二甲氧基羟基结构的化合物表现出了更高的促氧化活性，其中CaA的活性最高。

Fine chemicals to add auxiliary Series: lubricating oil pour point depressant, calcium zinc magnesium methacrylate, methyl acrylic acid lauryl ester, tetradecane methacrylate ester, methacrylic acid octadecyl ester, a acid ethylene glycol, diethylene glycol methacrylic acid ester, glycidyl methacrylate, the second reduction of three ethylene glycol dimethyl acrylate, acrylic acid lauryl ester, tetradecyl acrylate, octadecyl acrylate, acrylic acid ethylene glycol, diethylene glycol acrylate esters, glycidyl, two shrink three acrylate such as ethylene glycol.

精细化工添加助剂系列：润滑油降凝剂，甲基丙烯酸钙锌镁，甲基丙烯酸月桂酯，甲基丙烯酸十四烷酯，甲基丙烯酸十八烷基酯，甲基丙烯酸乙二醇，甲基丙烯酸二乙二醇酯，甲基丙烯酸缩水甘油酯，二缩三乙二醇二甲基丙烯酸酯，丙烯酸月桂酯，丙烯酸十四酯，丙烯酸十八酯，丙烯酸乙二醇，丙烯酸二乙二醇酯，丙烯酸缩水甘油酯，二缩三乙二醇丙烯酸酯等。

Their structures were characterized as usnic acid,evinic acid,perlatolic acid,olivetoric acid,2-hydroxyl-4-methoxyl-6-pentyl benzoic acid and 2,4-dihydroxyl benzoic acid,respectively.

结果从太白花的石油醚部分得到6个化合物，分别鉴定为：松萝酸、去甲环萝酸、珠光酸、漂红梅衣酸、2-羟基-4-甲氧基-6-正戊基苯甲酸和2，4-二羟基-6-正戊基苯甲酸。

The main intermediates were detected during decomposition,such as acetic acid,oxalic acid,malonic acid,phenol,3-hydroxyhypnone,naphthalene,benzene sulfonic acid,phthalic acid,β-naphthalene etc . by ultraviolet-visiblespectroscopy,ion chromatographand gas chromatograph coupled with mass spectrophotometertechniques.The possible degradation pathway of Acid Orange Ⅱ was also speculated,that was,hydroxyl radical reacted with the azo linkage-bearing carbon of naphthol-ring,and the C—N cleaved,the azo-dye decolored and mineralized.

运用紫外光谱、离子色谱、色谱-质谱联用等方法，测定出酸性橙Ⅱ的主要降解产物有乙酸、乙二酸、丙二酸、苯酚、3-羟基苯乙酮、萘、苯磺酸、邻苯二甲酸、β-萘酚等，并依此推测酸性橙Ⅱ的降解机理，即羟基自由基攻击酸性橙Ⅱ分子上与萘环相连的C—N键，导致C—N键的断裂，进而染料脱色矿化。

Sheep tibetan antelope by wool horn albumen the composition of amino acid and goat, sheep by wool fibre identical; but there is certain difference on the content scale of all sorts of amino acid, acid content of ammonia of group of cashmere tibetan antelope is 5.88%, all the acid content of ammonia of content; guang of acid of ammonia of the group in prep above cashmere wool and continous abb is 10.60%, alkalescent and amino acid and acidit

藏羚羊被毛角蛋白氨基酸的组成和山羊、绵羊被毛纤维相同；但在各种氨基酸的含量比例上有一定的差异，藏羚羊绒组氨酸含量为5.88%，均高于山羊绒和绵羊毛中组氨酸的含量；胱氨酸含量为10.60%，高于其它所测山羊的绒和毛；碱性氨基酸和酸性氨基酸含量接近(14.87%，15.23%)；藏羚羊绒促螺旋蛋白含量低于降螺旋蛋白。

Aminobutyric acid in tea was extracted, isolated and determined. Water achieve a better effect than ethanol in extracting γ-aminobutyric acid, and γ-aminobutyric acid content was enhanced by 20%; 732 positive ion resin columns (2.5×50cm) was used to isolate, citric acid and ammonia water were used as elutes, based on pH linear gradient. Results indicated that γ-aminobutyric acid inelute could reach 39%; thin layer scanner could measure the content of γ-aminobutyric acid.

对茶叶中γ-氨基丁酸的提取、分离及检测方法进行了研究，分别采用水和乙醇作为提取溶剂，结果发现用水提取能达到更好的效果，γ-氨基丁酸含量提高20％；同时采用离子交换树脂对γ-氨基丁酸提取液进行分离，提取液上732阳离子树脂柱(2.5 ×50cm)，使用柠檬酸和氨水缓冲液进行pH线性梯度洗脱，洗脱液中γ-氨基丁酸最高浓度达39％；采用薄层扫描仪对γ-氨基丁酸的含量进行检测，研究并确定了检测的条件及参数。

A reverse-phase high performance liquid chromatographic method with C18 Hypersil ODS column for the simultaneous determination of hydroxy acids including lactobionic acid,glycollic acid,tartaric acid,lactic acid,malic acid and citric acid in cosmetics,was studied.

采用反相高效液相色谱法同时测定化妆品中乳糖酸、乙醇酸、酒石酸、乳酸、柠檬酸和苹果酸等6种羟基酸。

The results showed that the POV of hemp seed oil was affected remarkably by temperature and time, and the effect of temperature was greater than that of time. The TBHQ had good antioxidation ability to hemp seed oil. TBHQ or BHA with isoascorbic acid or critic acid exhibited great antioxidation ability, the synergistic effect on the oil of critic acid was better than that of isoascorbic acid. When 0.02% TBHQ with 0.005% BHA and 0.01% critic acid or with 0.005%BHA and 0.01% isoascorbic acid was used in the oil, the shelf life of the oil could be prolonged from 4 months to 11~13 months at 20℃.

结果表明，温度、时间对汉麻籽油的自氧化过程有显著影响，且温度的影响更明显；叔丁基对苯二酚对汉麻籽油具有较好的抗氧化性能，柠檬酸和异Vc对TBHQ与丁基羟基茴香醚复配的复合抗氧化剂均表现出较强的协同抗氧化性能，且柠檬酸的协同抗氧化性优于异Vc；添加0.02%TBHQ+0.005%BHA+0.01%柠檬酸或0.02%TBHQ+0.005%BHA+0.01%异Vc复合抗氧化剂，可使汉麻籽油在20℃下的预贮藏时间从4个月延长至11~13个月。

The main components of the fatty acids in hemp fruit oil is palmitic acid(8.43%),γ-linolenic acid(1.28%),linoleic acid (58.66%),linolenic acid(14.01%,oleic acid(10.14%),stearic acid(3.77%),a...

其中不饱和脂肪酸含量为86.04%，说明火麻仁油是一种具有营养保健价值和药疗功效的功能性油脂。

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。