共搜索到7803条信息，每页显示10条信息，共781页。用时：0小时0分0秒592毫秒
high induration temperature (~1325 °C) owing to its poor diffusion bonding unlike magnetite ore. Further, high-alumina hematite pellets show very high reduction degradation index (RDI) during low... of basic sinter in blast furnace.Key words:hematite pellet; high-alumina ore; reduction degradation index (RDI); pyroxenite flux; olivine flux; effect of MgO......
, 16(3): 257-264. [12] 李龙祥, 周凌宇, 黄戡, 等. 循环荷载下无砟轨道-桥梁结构体系刚度退化性能[J]. 中南大学学报(自然科学版), 2019, 50(10): 2481-2490. LI Longxiang, ZHOU Lingyu, HUANG Kan, et al. Performance of stiffness degradation of structure..., 王鹏, 等. 针对网级评估的区域桥梁退化建模与演绎应用[J]. 中南大学学报(自然科学版), 2021, 52(3): 828-838. Citation: XIA Ye, LEI Xiaoming, WANG Peng, et al. Degradation modeling and application of regional bridges for network-level......
Photocatalytic degradation of pesticide residues with RE3+-doped nano-TiO2曾睿,王敬国,崔建宇,胡林,慕康国Department of Resources and Environment,China Agricultural University摘 要:The photocatalytic degradation effects of carbofuran solution under concentration of 0.2,0.4,0.8 g/L Re3+-doped nano-TiO2 were studied.The highest degradation rate of 54.89% was obtained......
Photocatalytic degradation of pesticide residues with RE3+-doped nano-TiO2曾睿,王敬国,崔建宇,胡林,慕康国Department of Resources and Environment,China Agricultural University摘 要:The photocatalytic degradation effects of carbofuran solution under concentration of 0.2,0.4,0.8 g/L Re3+-doped nano-TiO2 were studied.The highest degradation rate of 54.89% was obtained......
and torque were designed to simulate wave loading. Dynamic properties such as pore water pressure accumulation, strain development and modulus degradation were investigated. The influence of frequency, cyclic stress ratio and continuous rotation of principal stress axes were studied and the results were compared with dynamic triaxial tests. Finally, an empirical equation for dynamic modulus degradation......
; Degradation of bond between steel bar and freeze.... Key words: concrete; bond strength; degradation; electrochemical chloride extraction; freeze-thaw cycles ......
; 文献标志码:A Degradation process of fluorine conversion coating on magnesium alloy by electrochemical impedance spectroscopy ZHANG Chun-yan, LIU Xin-peng, HUANG Jia-qi, LIU... immersion times. The formation mechanism and the degradation behavior of fluorine conversion film in Hank’s solution were discussed by investigating the variation of surface morphology and chemical......
faster. Under reducing condition simulated COREX shaft furnace, sinter possessed the worst reduction degradation index (RDI) and undifferentiated reduction index (RI) compared with pellet and iron... between cracks of the burden and its ultimate reduction degradation performance. The existence of partial metallurgical performance superposition between composite and single ferrous burden......
capacity. Key words: reinforcement with umbrella arch; cracking lining; secondary loading; stiffness degradation 在隧道加固方法中,套拱是广泛采用的加固方法.随着运营时间推移,衬砌结构使用功能呈非线性下降,外力作用导致隧道衬砌结构开裂,渗漏水,剥落剥离等[1].其中,衬砌裂损最为常见,据不完全统计......
In vitro Degradation of Butanediamine-Grafted Poly(DL-Lactic acids)罗彦凤摘 要:The degradation of butanediamine-grafted poly(DL-lactic acid) polymers (BDPLAs... during degradation duration of 12 weeks. The results reveal that the acidity of PDLLA degradation products was weakened or neutralized by grafting butanediamine onto PDLLA. A uniform degradation......
