Results 81 to 90 of about 523,868 (94)

含锂矿物机械化学强化提锂工艺

, 2019
采用机械化学活化方法,在机械活化过程中用K2SO4为活化添加剂,强化锂云母中惰性Li-O配位结构活化转型,通过温和稀酸浸出高效分离锂,考察了活化过程添加剂用量、球磨时间和球料比及浸出条件如酸浓度、液固比、搅拌速度、温度和时间等对锂回收率的影响,确定了最佳工艺条件,讨论了反应过程机理。结果表明,机械化学活化强化破坏云母片层结构中的Si-O-K结构,降低了Si-O配位结构对Li-O配位结构的牵制力,导致Li-O键强减弱,反应活性增加。在最优条件下(精矿与K2SO4质量比5:1、球磨机转速500 r/min ...
何明明, 郑晓洪, 曹宏斌, 赵春龙, 尤海侠, 孙峙   +5 more
core  

[Preparation of B@PH/GM-V hydrogel microspheres and their antioxidant and osteogenesis-promoting effects]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Feng Y, Liu Y, Shen M, Sun J, Liu B, Lin Z, Lu C, Guo J.   +7 more
europepmc   +1 more source

流化床用微球催化剂的回收方法

, 2008
一种流化床用微球催化剂的回收方法，是将欲回收的催化剂按一定比例与制备新鲜微球催化剂的各原料混合，料浆胶磨后喷雾干燥并高温焙烧，可以获得具有较低磨损指数和适宜粒度分布的微球催化剂；其制备过程如下：1)按一定的氧化物干基计量比，将欲回收的催化剂与分子筛原粉、粘结剂、助剂、造孔剂和去离子水混合，打浆，并且回收的催化剂在总配料中的氧化物干基的重量含量不超过80％；2)料浆过胶体磨胶磨，使得其中所含的固体颗粒直径小于20μm，90％的颗粒直径小于 10μm，70％的颗粒直径小于5μm；3)喷雾干燥，制得微球样品 ...
吕志辉, 刘中民, 何长青, 魏迎旭, 田 鹏, 袁翠峪, 齐 越, 王贤高, 许 磊, 杨立新, 孟霜鹤   +10 more
core  

[Application of biocopy function of temporary crown occlusal morphology in patients with severe attrition]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban, 2020
Li Z, Liu YS, Wang SM, Zhang R, Jia L, Ye HQ, Hu WJ, Zhao WY, Liu YS, Zhou YS.   +9 more
europepmc   +1 more source

[Four-year follow-up study of onlay and occlusal veneer restorations on posterior teeth]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Wu M, Xu T, An W, Liu Z, Jiang T.
europepmc   +1 more source

[A wearable ballistocardiogram-electrocardiogram union acquisition system]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2018
Xiao L, Li H, Zhang X, Tang J, Li Y.
europepmc   +1 more source

[Total saponins of Panax japonicus alleviates CCl₄-induced acute liver injury in rats by regulating the PI3K/AktNF-κB signaling pathway]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Wu G, Song T, Tang L, Wang Y, Liu X, Huang S.   +5 more
europepmc   +1 more source

[Early effects of low-level long-term occupational chromate exposure on workers'health]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban, 2019
Liu JX, Hu GP, Zhao L, Zhang YM, Wang L, Jia G, Liu RX, Feng HM, Xu HD.   +8 more
europepmc   +1 more source

[Di (2-ethylhexyl) phthalate-induced hypospadias in SD rats is related with Mafb expression: a transcriptome profiling-based study]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao, 2019
Han X, Shao W, Yue Z, Xing L, Shen L, Long C, Zhang D, He D, Lin T, Wei G.   +9 more
europepmc   +1 more source

[C6TSEDRVAJZ, a combination of small-molecule compounds, induces differentiation of human placental fibroblasts into epithelioid cells <i>in vitro</i>]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Dai Z, Gao Q, Ying M, Wang A, Hong J, Wang C, Guo Y, Liu C, Liu G.   +8 more
europepmc   +1 more source