查询词典 phenol-phthalein

Benzene perfluorous nonene ether was prepared by the reaction of perfluo-rous nonene (C9F18) and phenol,and the molecular structure of which was identified by IR and NMR spectra.

以全氟壬烯、苯酚和氯磺酸为主要原料，经醚化、磺化和中和反应制备对全氟壬烯氧基苯磺酸表面活性剂，用红外光谱和19FNMR，1HNMR对分子结构进行了表征。

In addition, the Medical Scientific Committee on the British Government scientists have found that in recent decades to reduce male sperm count and testicular volume of octyl phenol with narrow, double-Fen A and D n-methyl-phthalic acid resin, and these substances are widely used in manufacture of baby bottles, canned food boxes, food packaging bags, such as coating the inner wall.

此外，英国政府医学科学委员会的科学家们发现，近几十年来男性精子数量减少和睾丸体积缩小与辛基苯酚、双芬A和丁基苯甲基酞酸脂有关，这些物质广泛用于制造奶瓶、罐头盒、食品包装袋等的内壁涂层。

Urumqi 830011, ChinaAbstract: Objective: To investigate the influences of the sperm of male rats impact,when octyl phenol, nonylphenol joint exposured.

目的：观察辛基酚、壬基酚联合染毒时，对雄性大鼠精子状况的影响。

OrthoSubstituted phenols gave the para-para-coupling products and para-substituted phenols gave the ortho-ortho-coupling ones, while hindered phenol gave the corresponding oxidative coupling product.

该氧化偶联反应的反应条件温和、产物易于分离、收率高，可作为有机合成中某些碳-碳键形成的新方法加以应用。

The structure analysis indicates that the reverse symmetry ligand H4LB molecules are linked into a 2D supermolecular network by two types of hydrogen bonds. One type occurs between the oxalamide oxygen group and the phenol hydroxyl qroup of the nearest molecule with d=2.906(2) and ∠O-H…O=151.8°. The other type is between the oxalamide nitrogen group and the oxalamide oxygen group of anther molecule with d=2.849(2),∠N-H…O=158.7°.

晶体结构研究表明配体H4L为顺式桥联分子，晶体中存在两种氢键，一种是草酰胺基团的O原子与苯环上的酚羟基形成O-H…O氢键[d=2.906(2)，∠O-H…O=151.8°]；另一种是草酰胺基团的氨基与相邻草酰胺基上的O原子形成N-H…O氢键[d=2.849(2)，∠N-H…O=158.7°]，通过上述两种氢键将化合物H4LB连接成二维网络结构。

The effect of the operating parameters on the ozonation of phenol aqueous solution in the presence of activated carbon fiber was studied.

研究了活性碳纤维催化臭氧化降解苯酚过程中各种参数的影响。

The results indicated that 3 chemicals could greatly enhance resistance of potato tuber to early blight low concentrations. Protection rates induced by phenol (1mmol/L), benzoic acid (0.01mmol/L), and paraaminobenzoic acid (5mmol/L) were 43.21%, 40.72%, and 28.75%, respectively.

结果表明，供试的3种化合物均在较低浓度下具有较强的诱导抗病作用，苯酚、苯甲酸和对氨基苯甲酸分别在1，0.01和5mmol/L时诱导的保护率最高，分别达到43.21%，40.72%和28.75%，均与对照差异极显著。

Phenol, benzoic acid, and paraaminobenzoic acid, as the elicitors, were evaluated in lab of their efficiences to induce potato tuber against early blight, and the change of resistance related enzymes were investgated in induced potato tuber.

利用苯酚、对氮基苯甲酸和苯甲酸等3种芳香族类化合物作为激发子，对马铃薯块茎抗早疫病的效果进行了探讨，同时分析了诱导处理后马铃薯块茎中与抗病性相关的酶活性的变化。

Phenol,benzoic acid,and paraaminobenzoic acid,as the elicitors,were evaluated in lab of their efficiences to induce potato tuber against early blight,and the change of resistance related enzymes were investgated in induced potato tuber.

利用苯酚、对氨基苯甲酸和苯甲酸等3种芳香族类化合物作为激发子，对马铃薯块茎抗早疫病的效果进行了探讨，同时分析了诱导处理后马铃薯块茎中与抗病性相关的酶活性的变化。

With the same content of templates,the pore diameter of the generated material withglycerol as template is bigger than the one with pentaerythrite. The photocatalytic degradationof phenol,methyl orange and dodecylbenzene—sulfonate are studied.

利用所制得的中孔纳米二氧化钛粉体应用于甲基橙、苯酚和十二烷基苯磺酸钠的模拟废水溶液的处理中，探讨了二氧化钛的降解特性和光催化效率的影响因素。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。