无氮的

The biological activities of the metal complexes of derivatives of benzaldehyde nitrogen mustard were investigated against 〓,〓 and SMMC-7721 cell lines. The interesting results were found. When the non-activity ligand combines with cobalt and nickel , the complexes have good antitumor activity, while active ligand binds to the metal, the complex has no activity, indicating there are synergic effect and counteraction between the metals and the ligands.

对所获得苯甲醛氮芥衍生物的金属配合物进行研究，观察它们对SMMC-7721、〓细胞株的作用，发现某些有趣的实验结果，无活性的配体，当与钴，镍形成配合物后，具有很好的抗肿瘤活性，而有活性的配体形成配合物后无活性，揭示在它们存在有协同作用及拮抗作用。

The bay area has no substituent and has electron-withdrawing groups,such as bromine atom,cyano-group and 4-formyl phenoxy group compounds have strong absorption in 525 nm,when excitated them,they have strong yellow and salmon pink luminescence bettwen 538 and 566 nm.When introduce electron-donating substituents,such as phenoxy group,morpholinyl,piperidinyl and n-butylamino group,the absorption bathochromic shift while the electron-donating ability is improved,bettwen 536 and 692 nm have strong absorption,reach to the near-infrared region. When excitated them,only the phenoxy group compound has strong salmon pink luminescence in 572 nm,the others have no fluorescence.

其中，港湾位无取代的以及含吸电基团(—Br、—CN、对甲酰基苯氧基)化合物在525 nm左右处均有很强的吸收ε＞10~4M~(-1cm~(-1)，当光激发时，港湾位无取代、溴代和氰基取代物发出538～547 nm的强烈黄色荧光，对甲酰基苯氧基取代物则发出566 nm的强烈橙红色荧光；含供电基团(苯氧基、吗啉基、哌啶基、正丁氨基)化合物随着供电子能力的增强，吸收发生红移，在536～692 nm处均有很强的吸收ε＞10~4M~(-1cm~(-1)，达到了近红外区，当光激发时，只有苯氧基取代物发出572 nm的强烈橙红色荧光，而含氮供电基取代物均发生了荧光淬灭。

The results showed that two of the ball cactuses tested could growth well in solution culture , in which the growth rate was significantly higher than or equal to that in peatmoss culture. Among the four solution culture formulae , formula 4 had the highest biomass increment and uptake of N , P and Kfor Ferocactu horridus. The biomass of Echinopsis calochlora did not differ significantly among the four formulae , but significantly increased higher than medium culture. This study indicated that ball cactuses could grow well in nutrient solution culture.

结果表明：经100 d 种植，供试的仙人球在这4 种营养液配方静置水培中均能正常生长，而且生长速度显著大于基质栽培或与之相当；在4 种营养液配方中，巨鹫玉在完全硝态氮的配方处理中球体质量的增加比基质栽培的快1 倍以上， N、P、K的吸收量也显著高于其它含有铵态氮配方的；而金盛球在所有营养液配方中生长量均显著高于基质栽培，球体质量增长量超过基质栽培的1 倍以上， 4 种配方间无显著差异。

According to the production mechanism and characteristic of NOx,the technologies of NOx inhibiting and removing in the process of coal combustion were classified into three kinds:nitrogen-free combustion,low NOx combustion and de-nitrification of flue gas.

根据NOx产生的机理和特点，燃煤过程NOx抑制与脱除技术主要包括无氮燃烧技术、低NOx燃烧技术以及烟气脱硝三类。

Traditionally,endogenous amino acids are determined by feeding nitrogen-free diets,the regression method or complete digestibile protein or intravenous injection AAs,but these techniques contain both des...

在内源氨基酸的测定方法中，以传统方法(无氮日粮法、回归外延法和完全可消化蛋白源或静脉灌注平衡氨基酸法)最为常用，但存在种种缺陷。

Uni-algal cultures were made first on media enriched with nitrogenous compounds to encourage vigorous growth.The uni-algal cultures were then subcul- tured onto nitrogen-free media,which effected a preliminary separation of those algae which could thrive in the absence of pre-f...

在100毫升无菌无氮培养基中生长四天的结果测定，水生686固氮蓝藻、水生678固氮蓝藻(A.azotica forma a)、水生670固氮蓝藻和水生508固氮蓝藻的固氮量分别为1.0146、0.938、0.8614和0.759毫克。

Uni-algal cultures were made first on media enriched with nitrogenous compounds to encourage vigorous growth.The uni-algal cultures were then subcul- tured onto nitrogen-free media,which effected a preliminary separation of those algae which could thrive in the absence of pre-formed nitrog...

在100毫升无菌无氮培养基中生长四天的结果测定，水生686固氮蓝藻、水生678固氮蓝藻(A.azotica forma a)、水生670固氮蓝藻和水生508固氮蓝藻的固氮量分别为1.0146、0.938、0.8614和0.759毫克。

The pH value of silages was all lower than 4.0 and the ratio of ammonia nitrogen to total nitrogen was all lower than 5.0, which improved the quality that all the silages in experiment were good.

经不同切碎方式的各组青贮饲料的有机酸含量均无显著差异（P〉0.05），pH值均在4.0以下，而且氨态氮与总氮的质量比也均在5.0以下，达到了优质青贮饲料的标准，虽然各青贮饲料的粗蛋白、粗灰分和可溶性碳水化合物含量有显著差异（P〈0.05），但均为优质的青贮饲料。

Results showed that there were no evident effects of different mechanical processes on the organic acid content(P＞0.05). The pH value of silages was all lower than 4.0 and the ratio of ammonia nitrogen to total nitrogen was all lower than 5.0, which improved the quality that all the silages in experiment were good. Though the effects of three different mechanical processes on the CP, CA and WSC contents of silages were evident, the silages were all excellent.

经不同切碎方式的各组青贮饲料的有机酸含量均无显著差异(P＞0.05)，pH值均在4.0以下，而且氨态氮与总氮的质量比也均在5.0以下，达到了优质青贮饲料的标准，虽然各青贮饲料的粗蛋白、粗灰分和可溶性碳水化合物含量有显著差异(P＜0.05)，但均为优质的青贮饲料。

In addition, dominant effects of per parent showed that the most herbage quality trait had obvious selfing depression.

饲草品质性状中除无氮浸出物外其它性状均表现出明显的自交衰退现象。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。