查询词典 ruthenate

The smaller bismuth ruthenate partical is, sheet resistivity is lower and temperature coefficient of resistance is more positive and the refiring change ratio is nearer to zero.

铅硼硅玻璃粉体平均粒径对厚膜电阻的性能影响有一极值点，约为1.51μm，在该点处膜层的方阻值最小，电阻温度系数绝对值最小，重烧变化率最接近零值。

This paper also make research on the influence of heat treatment technology on the resistance and TCR of different thick film elements including Ag-Pd, bismuth ruthenate and copper ruthenate, and influence of heat deposition technology on the consistency of resistance of the elements.

此外，论文研究了热处理对Ag-Pd、钌酸铋、钌酸铜三种不同材料体系厚膜电阻元件的阻值、电阻温度系数的影响和热存放对电阻元件阻值一致性的影响。

In chapter 1, the progress in study of the ruthenium complex oxides. especially the coexistance of magnetism and superconductivity in 〓 and 〓 are introduced. The introduction makes conclusion that all of the Ru-1212 and Ru-1222 compounds reported are accompanied by small amounts of SrRuO〓 impurities, this is to say that, it is difficult to synthesize pure samples of these two compounds by traditional solid state reaction. So the author think that the studies for new synthesis methods of ruthenate superconductors which is beneficial to the synthesis of new type precious metals superconductivity is very important till now.

第一章重点综述了钌系复合氧化物的研究进展，特别是其中超导电性的发现及其钌系1212、1222相铜氧化物超导电性和铁磁性共存的特征，在此基础上可以看出，至今文献报道所获得的Ru-1212和Ru-1222相化合物都含有少量的SrRuO〓杂相，即很难通过原有的固相反应方法得到纯相化合物，由此作者提出，现有钌系超导氧化物合成的新方法研究仍具有重要的现实意义，这也将更有利于探索合成新型贵金属超导体。

It was found that, with the increasing of volume fraction of silver and conductor phase, sheet resistivities descend and there are critical thresholds. The average partical size of bismuth ruthenate and PbO-B_2O_3-SiO_2 glass was researched.

研究了各相粉体平均粒径对膜层性能的影响，结果表明：钌酸铋平均粒径越小，膜层的方阻值越小，电阻温度系数偏正，重烧变化率越接近零值，球磨工艺的极限平均粒径为0.56μm。

PbO-B_2O_3-SiO_2 glass reacts with bismuth ruthenate and lead ruthenate is produced as transition layer. The transition layer can make the interface gradually change and the properties of resistors are improved at the same time. Based on the study above, the way to get series of pastes was developed.

在上述研究工作的基础上，总结提出Bi_2Ru_2O_7/Ag系厚膜电阻浆料实现阻值系列化的方法：改变功能相中银的百分含量和浆料固相中功能相的百分含量确定电阻膜层的方阻值和电阻温度系数；改变复合无机粘结相中两组元的配比实现厚膜电阻重烧变化率的可控调整，并对方阻值和电阻温度系数进行微调。

A highly active hydrogen added catalytic nanometer Ru/C is made by reducing metal ruthenate, getting nanometer ruthenate metal glue under the protection of surface activator, filtering, washing glue solution drawing by the carrier to get highly scattered loading nanometer ruthenate metal catalyst.

本发明涉及一种高活性加氢催化剂纳米Ru/C的制备方法，该方法首先通过化学还原金属钌盐，制得表面活性剂保护下的纳米钌金属胶体，然后用载体吸附制得的胶体溶液，经过滤，洗涤，获得高度分散的负载型纳米钌金属催化剂。

The above performance could meet the requirement of braking. The result showed that heat treatment technology could preferably improve the electric characteristics of the thick-film elements. The best heat treatment technology of Ag-Pd resistance elements kept at 210℃for 130h, bismuth ruthenate resistance elements kept at 150℃ for 50h and copper ruthenate resistance elements kept at 180℃ for 50h.

热处理实验结果表明：热处理可改善厚膜电阻元件电性能，Ag-Pd电阻元件最佳热处理工艺为210℃保温130h，钌酸铋电阻元件最佳热处理工艺为150℃保温50h，钌酸铜电阻元件最佳热处理工艺为180℃保温50h。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。