查询词典 p-phthalic acid

The enhancement ability of four different enhancers such as azone, oleic acid, transcutol P and isopropyl myristate were investigated.

杨明 江西中医学院现代中药制剂教育部重点实验室，江西南昌 330004；成都中医药大学，四川成都 611173

Appropriate rate of P application enhanced the contents of protein and fatty acid, but the increment of starch content was neglectable.

适宜施用磷肥可以提高两品种玉米籽粒蛋白质和脂肪酸及其组分含量，但施磷对两品种淀粉及其组分含量的增加不明显。

Herein,two nitrophenyl pyrrolic amide receptors,p-nitrophenyl-1H-pyrrole-2-carboxamide(1) and m-nitrophenyl-1H-pyrrole-2-carboxamide(2),were synthesized by coupling pyrrole-2-carboxylic acid with nitroaniline in the presence of dicyclohexylcarbodiimide.

阴离子识别主体分子在膜运输载体、催化、化学传感及酶仿生模拟等方面都具有广阔的应用前景[1，2]。

Alidase was prepared by coupling silica-gel spheres already carrying γ-aminopropyltriethoxy-silane with glutaraldehyde, and then with N-(p-aminophenyl) oxamic acid.

将γ氦丙基三乙氧基硅烷取代的微球硅胶先后与戊二醛，对氨基苯草氨酸结合，制成了一种新的吸附剂，用于唾液酸酶的亲和提纯。

Cu2-Co2-KBr with high catalytic activity and selectivity shows synergistic effect between metal ions.Under the reaction conditions of mCu(Ac2:mCo(Ac2:m= 0.1:0.5:0.1, n:n=0.14, glacial acetic acid as solvent, overdosage sodium percarbonate, 65℃, the conversion can reach 45.9% and the selectivity for p-methoxy benzaldhyde is about 68.3%.

结果表明，Cu2-Co2-KBr具有较高的催化活性和选择性，体现出金属离子之间的协同作用，对甲基苯甲醚在mCu(Ac2：mCo(Ac2：m=0.1：0.5：0.1，n：n=0.14，冰醋酸作溶剂，稍过量的过碳酸钠，65℃的条件下，转化率可达45.9%，生成对甲氧基苯甲醛的选择性为68.3%。

Covering an area of 30 mu, the project is to produce graphitized carbon black, p-aminophenol and phenylacetic acid of 500 tons, 3,600 tons and 4,500 tons respectively after construction.

导电炭黑用途广泛，是电池电极的首选材料，目前国内尚需进口，国际上也很有市场；对氨基苯酚是国家一级大药厂的急需原料；苯乙酸是国家鼓励生产的新产品。

It is considered that the hydrolysis of phase 5 or phase 3 in water can be themain cause for the poor water resistance,which can be improved by the addition of phosphonic acid or p...

讨论了氯氧镁水泥耐水性的评价方法，并对今后的研究提出了几个尚需深入的方面。

Synthesis of α-(p-Toluenesulfonamido)-Phosphonic Acid Derivatives and Phosphonopeptides and Their Biologic Activity PH.D.

为寻找高效选择性除草剂，我们设计、合成了新型含磺酰基α-氨基膦酸和膦肽衍生物共96个，并研究了有关的化学反应。

In order to solve the problem of producing large amounts of wastes and undesired o-nitrotoluene in synthesis of p-nitrotoluene with the mixed concentrated mineral acids,the catalytic activity of phosphotungstic acid for selective nitration of toluene was studied and the optimum conditions for preparing the catalyst were investigated.

为解决硝硫混酸对硝化甲苯过程中因甲苯的非选择性硝化产生的o-MNT和大量废酸对环境的危害，研究了磷钨酸对甲苯硝化反应的催化活性。

The frequency of particular amino acids in signal peptides by statistical approach was 48.54% for hydrophobic, 18.67% for uncharged, 24.54% for negative and 8.00% for positive amino acids. The most frequent amino acid was alanine, and the least was isoleucine. Three classes of signal peptides were found in the genome of P. syringae pv. tomato, 501 ORFs belong to secretary signal peptides, 36 ORFs belong to twin-arginine signal peptides, and 15 ORFs belong to lipoprotein signal peptides. Type IV pilin signal peptide and bacteriocins and pheronones signal peptide was not found in the genome.

同时，对组成信号肽的氨基酸种类作了系统的分析，发现组成信号肽的氨基酸中非极性氨基酸占48.54%，极性氨基酸占18.67%，带负电荷氨基酸占24.54%，带正电荷氨基酸仅占8.00%，出现最多的3种氨基酸依次为亮氨酸、丙氨酸和丝氨酸，最少的氨基酸是异亮氨酸，在切割位点－1端的氨基酸中83.21%均为丙氨酸，在切割位点后3位的氨基酸中最多的氨基酸也是丙氨酸。

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。