Results 121 to 130 of about 464,578 (166)

双氧水环氧化制备环氧环己烷的方法

, 2009
本发明涉及一种直接以双氧水为氧源，采用具有反应控制相转移催化特性的杂多酸盐混合物催化环己烯环氧化制取环氧环己烷的方法。将环己烯在反应控制相转移催化剂的作用下，与过氧化氢反应，通过添加剂的调节，环己烯的转化率大于96％，环氧环己烷对环己烯的选择性大于98％，反应结束后，环氧环己烷通过常压精馏分离提纯，催化剂反应结束后可分离循环使用 ...
高 爽, 张恒耘, 奚祖威, 吕 迎
core  

[Pathophysiological mechanisms of coagulation dysfunction associated with liver disease]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Wang H, Chen X, Lu YY.
europepmc   +1 more source

高铝粉煤灰资源化过程重金属环境影响研究

, 2013
针对高铝粉煤灰碱石灰烧结多资源利用工艺过程中重金属元素迁移规律和潜在环境影响量化问题,基于物质流分析方法,分析该工艺中重金属元素的边界输入输出和内部迁移规律.结果表明,输入端54%的铅元素由工业过程废弃物即高铝粉煤灰带入,其余来自工业原材料.输出端64%的铅元素进入产品,其余部分进入废弃物.该工艺主要环境排放节点在烧结和水泥生产环节.通过定义相对环境排放指数(REEI),比较分析该工艺与拜耳法工艺重金属排放情况.结果表明,该工艺单位氧化铝产量铅元素净排放显著降低,铬元素环境排放量与拜耳法基本持平 ...
李会泉, 李强, 张懿, 韩永鹏, 陈波, 张靖峰, 贾小平   +6 more
core  

[Effect of preoperative lower-limb muscle strength on perioperative blood loss and early outcomes in total knee arthroplasty]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li H, Zhu K, Zhang H, Wang J, Wang B, Nie Y, Shen B.   +6 more
europepmc   +1 more source

[Guillain-Barré syndrome following allogeneic hematopoietic stem cell transplantation in a pediatric patient: a case report and literature review]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Lyu JY, Zhou XH, Wang CJ, Yang CL, Luo MJ, Liu SX.   +5 more
europepmc   +1 more source

[Analysis of the prevalence and influencing factors of myopia among primary and secondary school students in Inner Mongolia Autonomous Region in 2022]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Lu L, Li J, Huang T, Yang R, Liu Y, Dang J, Cai S, Sun Z, Liu M, Yang Y, Zhu K, Song Y.   +11 more
europepmc   +1 more source

[Expert consensus on the "Four-Level and Dual-Axis" comprehensive diagnostic and therapeutic system for prosthetic rehabilitation of oral diseases]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Expert Group of “Expert Consensus on the ‘Four-Level and Dual-Axis’ Comprehensive Diagnostic and Therapeutic System for Prosthetic Rehabilitation of Oral Diseases”.
europepmc   +1 more source

[Research advances on hepatocyte zonal changes in metabolic associated fatty liver disease]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Li Y, Huang ZW, Gan JT, Zhang QF, Fu WW.
europepmc   +1 more source

[Research progress on the mechanism of mitochondrial dynamics in diabetic foot ulcers and its related intervention strategies]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Shan B, Guo ZA, Ma XP, Jing SS, Wu Y, Pan HB, Zeng ZY.   +6 more
europepmc   +1 more source

[Advances in clinical pharmacotherapy for neonatal <i>Ureaplasma urealyticum</i> infection]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Cai BB, Chen FF, Luo F.
europepmc   +1 more source