, 2008 一种高效液相色谱手性固定相，其特征在于：该手性固定相是以键合在介孔骨架中的(1R，2R)-环己二胺作为手性选择剂的，含(1R，2R)-环己二胺的有机- 无机杂化介孔材料。本发明制备过程简单；手性官能团(1R，2R)-环己二胺是以共价键的方式键合在材料的骨架中，手性基团的掺杂量高；材料具有高比表面积 (1000～500m2/g)和均匀可调的孔径(在2～10nm之间可调变)。通过简单地改变硅酯的量可以调控球形材料的粒径大小。通过热处理的方法可以调变材料的孔径大小，在进行热处理调孔的过程中 ...
朱桂茹, 杨启华, 李 灿
core
Progress on functions of intracellular domain of trimeric ligand-gated ion channels. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanLu Y, Lin Y, Wang J.
europepmc +1 more source
[Chinese consensus on autologous stem cell transplantation for adult acute leukemia (2024)]. [PDF]
Zhonghua Xue Ye Xue Za ZhiStem Cell Application Group +2 more
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[A correction method for calculating resistance of Westerhof 's resistor]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2017 Yang Y, Zou Y.
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Gaoya dianqi雷击是引发输电线路跳闸故障的主要原因之一，严重影响电网安全稳定运行。为有针对性地指导输电线路的防雷设计和改造，文中提出了基于多因素驱动的输电线路区域雷击跳闸风险评估方法。首先，综合考虑气象、电网、环境影响因素，构建完整有效的样本空间；其次，基于6种较优回归算法（XGBoost、RF、Bagging、GBRT、DT及KNN），对样本数据进行训练及验证；然后，选取拟合优度最高的XGBoost算法构建输电线路区域雷击跳闸风险评估模型；最后，算例结果表明：雷击故障点落在风险区域占75 ...
范凯 +4 more
doaj
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Nan Fang Yi Ke Da Xue Xue Bao, 2018 Huo XL +7 more
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[Chinese expert consensus on the diagnosis and treatment of acute graft-versus-host disease after hematopoietic stem cell transplantation (2024)]. [PDF]
Zhonghua Xue Ye Xue Za ZhiHematopoietic Stem Cell Application Group +2 more
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[Clinical features and prognosis of 93 elderly patients with multiple myeloma]. [PDF]
Zhonghua Xue Ye Xue Za Zhi, 2017 Chen HM +5 more
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Nan Fang Yi Ke Da Xue Xue Bao, 2016 Li LC +5 more
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Hua Xi Kou Qiang Yi Xue Za Zhi, 2015 Sijia Q +4 more
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