查询词典 p-phthalic acid

The ratio of eicosapentaenoic acid/arachidonic acid was 0.49-0.92 in fish oil group,but 0.02-0.03 in the other two groups.

第6周后，全血和富含血小板血浆中的血小板聚集性，鱼油组显著低于另2组(P.05)。

First, the proportion of N : P : K was calculated out equaling 7.0 : 7.0 : 7.0 after urea, organic fertilizer, humic acid, calcium dihydrogenphosphate ammoniate, potassium sulfate and diatomite used for raw materials.

首先以尿素、有机肥、腐殖酸、氨化普钙，硫酸钾、硅藻土为原料，初步计算出N：P：K=7.0：7.0：7.0的理论配方比；然后以氨化普钙中的含磷量为依据，计算出所需各种原料的用量；最后将一定量的各种原料混合均匀后，烘干、挤压成型就得到缓释复合肥。

Aims: To investigate the role and mechanisms of bile acid and substance P in the rat esophagus.

目的： 探讨胆酸和substance P 对大鼠食道的伤害与机转。

MethodsAcute gastric ulcer mouse models induced by water immersion stress and chronic gastric ulcer rat model induced by acetic acid were used to observe the anti-gastric ulcer action of Boltonia indica.

结果路边菊高剂量组小鼠应激性胃溃疡指数显著低于对照组(P.05)；路边菊高剂量组与低剂量组大鼠乙酸致慢性胃溃疡溃疡指数显著低于对照组(P.05)。

From the influnce of pH change in water on the copolymerization, the copolymerization mechanism was provided. The copolymerization mechanism is that there is hydrogen bond, which can enhance the copolymerization, between acrylic acid and crotonaldehyde at low pH and there is"Charge Transfer Complex", which gives the more crotonaldehyde in P (acrylic acid-crotonaldehyde), between acrylic acid and crotonaldehyde at high pH.

根据共聚合反应介质pH值变化对丙烯酸-丁烯醛共聚合反应的影响，提出了丙烯酸-丁烯醛共聚合反应机理，即在低pH值时，丙烯酸、丁烯醛之间可形成氢键，从而使共聚合体系具有较高的聚合反应速率和转化率；在较高pH值时，丙烯酸、丁烯醛之间则有电荷转移络合物形成，从而使共聚物中含有更多的丁烯醛链段。

Acid--aldehyde polymer tanning agent P (acrylic acid-crotonaldehyde was copolymerizaed from acrylic acid and crotonaldehyde in water and its structure was characterized by IR,〓C-NMR and DSC.

以丙烯酸、丁烯醛为共聚单体，采用水溶液共聚法，合成了含醛、酸基团高分子鞣剂----丙烯酸-丁烯醛共聚物，并利用IR光谱、〓C-NMR及DSC对其结构进行了确认和表征。

Secondly, organical composite thermal storage materials which takethe PNIPAAm gels as the carriers and the palmitic acid and the lauric acidmixture for phase change materials were Synthesized by radicalpolymerization ,and organical/inorganical composite materials which takeP(NIPAAm-co-AAm) gels as the carriers and the palmitic acid、thelauric acid and Na_2HPO_4·12H_2O mixture were also Synthesized byradical polymerization.

其次，本文采用自由基聚合法，合成了以PNIPAAm凝胶为载体，棕榈酸和月桂酸的混合物为相变材料有机复合相变蓄热材料；及P(NIPAAm-co-AAm)凝胶为载体，棕榈酸、月桂酸和Na_2HPO_4·12H_2O为相变材料的有机／无机复合相变蓄热材料，采用红外光谱、示差扫描量热法、热重分析、扫描电镜等手段对两种复合材料的结构及热性能进行了表征与分析，研究了有机酸和无机盐的百分含量对复合材料的相变温度和相变焓的影响。

The results revealed that with the increasing ear of continuous C. sativus cropping soil vanillic acid, p-hydroxyhenzoic acid and ferulic acid accumulated gradually. The total amount of the three phenolic compounds reached 29. 8 mgkg^(-1) dry soil after 7 years cropping, being markedly higher than that after 1 or 3 years cropping. After treated with these compounds, the root length and stem width of C.

结果表明：土壤中香草酸、对羟基苯甲酸及阿魏酸随黄瓜连作年限增加而呈现积累趋势；在连作7年的大棚土壤中3种酚酸类物质总量达29.8mgkg^(-1)干土，显著高于连作1年和1年土壤中的含量；酚酸物质可使黄瓜幼苗根长及茎粗显著降低，使株高及干物质量略有下降。

The separation behavior of o hydroxybenzoic acid, m hydroxybenzoic acid and p hydroxybenzoic acid in high performance capillary zone electrophoresis was investigated using cetyltrimethylammonium bromide as reversed reagent for electroosmotic flow The effects of pH of buffer solution and volume fraction of methanol on the separation, peak shape and elution order were studie

采用十六烷基三甲基溴化铵为电渗流改性剂，考察了邻羟基苯甲酸、间羟基苯甲酸和对羟基苯甲酸在高效毛细管区带电泳模式下的分离行为，研究了缓冲液的pH和添加剂甲醇的用量对这 3种同分异构体的分离、峰形和出峰顺序的影响，并据此优化了这 3种异构体的分离条件。

Citric acid lauryl alcohol ester was synthesized by the esterification of citric acid with lauryl alcohol using p methylbenzenesulfonic acid or cation exchange resin as the catalyst.

分别用阳离子交换树脂和对甲苯磺酸催化柠檬酸和月桂醇进行酯化反应，合成了柠檬酸月桂醇酯。考察了催化剂用量、原料配比、反应时间和反应温度等对合成反应的影响，优化了合成工艺条件。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。