Results 51 to 60 of about 60,450 (97)
, 2014 本发明提供了一种连续催化转化纤维素类原料生产至少一种多元醇的方法。该方法涉及将氢气、水、纤维素类原料与催化剂连续作用，从而生产包括至少一种多元醇、水、氢气以及至少一种共产物的流出液。水、氢气以及至少一种共产物从流出液中分离出并循环到反应器中 ...
张涛 +7 more
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[Research progress in biomechanics of common internal fixation for femoral neck fracture]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022 Wang F, Liu Y, Cheng L, Zhao D.
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, 2015 航空、航天及核电等高新技术产业中苛刻工况下相关运动部件的润滑和耐磨问题是影响整个系统可靠性和寿命的主要因素,因此对具有宽温域连续润滑功能的新型润滑材料提出了越来越迫切的需求。文中综述了自润滑复合材料、"发汗"润滑材料、PS/PM自润滑涂层及温度"自适应"润滑涂层的研究成果,包括润滑剂及复配的选择依据、新型润滑剂对宽温域连续润滑材料组织结构、摩擦学行为、摩擦化学反应、润滑机理等的影响,并对不同润滑剂材料体系的宽温域连续润滑材料进行了系统的总结 ...
乌学东 +4 more
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[Evidence-based clinical analysis of tissue regeneration in endodontic microsurgery]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiHe J, Song D, Xu X.
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[Epidemiological and clinical characteristics analysis of 681 cases of thoracolumbar osteoporotic vertebral compression fractures]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022 Chen H +8 more
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[Analysis and management of the influence of periapical lesion size on endodontic microsurgery]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiHuang X, Zeng K, Yang R, Wei X.
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[Comparison of effectiveness of femoral neck system and cannulate compression screw in treatment of femoral neck fracture in young and middle-aged patients]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2021 Yan C +7 more
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, 2016 本发明公开一种蜂窝状三维连续多孔硅材料及其制备方法。本发明硅材料，是蜂窝状、三维连续、多孔结构；上述硅杂化材料采用stober法单分散80～800nm球形二氧化硅纳米粒子为硅源，置于700～900℃下通过镁热还原将部分二氧化硅还原为单质硅后，最后采用氢氟酸刻蚀处理后制备而成。本发明方法采用简单易得成本低廉的stober法二氧化硅为原料，结合工艺成熟，能耗较低的镁热还原技术，同时辅以氢氟酸刻蚀，制备蜂窝状三维连续多孔硅材料，该材料孔洞分布均匀，尺寸可调，且结构稳定，有望在锂离子电池、光电材料 ...
朱锦, 左秀霞, 程亚军
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[Case Report of One Family With Coffin-Lowry Syndrome and Literature Review of 28 Cases in China]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanZhu D, Yang W, Zhang L.
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