Result of study indicates, with the content of Y2O3 and Al2O3 increases, the density and strength of sintering body obviously increases, and B2O3 as one auxiliary can effectively improve the density of sintering body, reduce the sintering temperature of the materials.
Binary sodium silicate binder transformed into ternary Na_2O\|SiO_2\|P_2O_5 compound agglutinative net with addition of Na_2HPO_4 modifier,which can effectively improve surface binding strength decrease surface roughness of the castings as well as residual strength at high temperature.
在水玻璃中加入改性剂Na2 HPO4,原二元水玻璃变成三元的Na2 O SiO2 P2 O5复合凝胶网络 ,有效地提高了表面层的粘结强度 ,明显降低铸件表面粗糙度 ,且型壳的高温残留强度也显著下降
This paper,based on the analyses of the problems existing both in college students' English listening processes and in teachers'instructions,tries to explore some feasible countermeasures to effectively improve students'listening comprehension and the teaching quality of listening course.
Qiankun capsule could improve clinical symptoms,increase body weight,improve life quality effectively,increase cellular immunologic function obviously(NK,LAK,IL 2,CD 3,CD 4,CD 4/CD 8),and decrease the expressions of p53 and PCNA.
The results show: through adding sodium polyacrylate into the ceramic body which may effectively increase the strength of the dry body and decrease the degree of deformation of the dry body . When reinforcing agent c adding content is 0.6%, the strength increasing rate of the dry body is 167.5%,and the deformation rate of the dry body is decreased from 50% to 10% .
The Flexible AC Transmission System(FACTS) is a widely studied and applied one, which can effectively increase the transmission capability, enhance the transient stality of the power system and improve the equlity.
灵活交流输电技术(Flexible AC Transmission System, FACTS)就是目前被广泛研究和应用的一种技术,它可以有效地提高系统输电容量,增强系统稳定性,改善电能质量,但同时也增加了系统的复杂程度和控制难度。
As it turned out, the grain size and morphology of Al-Cu interconnects are influenced by the SiO2 passivation: the temperature rise and the grain grows from 0.5 ～ 1 .0 m to 2 ～ 3 m, and in turn, theelectromigration lifetime of the Al-Cu film is effectively improved under the conditions of 1. 2×106 A/cm2 and a the temperature of 300℃ in N2 ambient.
Symmetrical charge/discharge cycles were achieved due to the existence of Fe3+/Fe2+ ion pair,which effectively improved the capacity of the electrochemical capacitor system. Apart from its excellent cyclic stability,the specific capacitance of the single electrode system reached 174 mAh·g-1,which is 109 mAh·g-1 higher than that obtained for H2SO4 as the electrolyte.
Results The diagnosis rate was 95% and the occur rate of complications was 15%,it will be effectively improved the accuracy rate of percutaneous and reduced the occur rate of complications through improving on technique of percutanous and strengthening nursing.
In this paper, based on investigating the special function of T2 in single chip microcom-puter(AT89C52) , the integrated method of measuring the frequency and the circle was developed , then, the measurment precision and the speed of the V/F conversion was improved effectively.
The results prove that by using the advanced sliding mode control method, the characteristics of the ultra-precision air bearing stage can be effectively improved through the introduction of the electrorheological damper.
Compared with the case of focusing irradiation, the laser absorption was effectively improved and the scattered light remarkably dropped under uniform irradiation; then due to the decrease in laser intensity, X-ray conversion increased.
Simulation results show that the transmission quality of the image may be effectively improved with this class of irregular LDPC code.
The density of material structure, bonding capacity of cementitious material to the abrasion-resisting component and the corrosion resistance are greatly and effectively improved by adding the auxiliary cementing materials and compound additives.
The experimental results show that the freezing resistance of high-performance concrete has been effectively improved.