Results 71 to 80 of about 216,835 (113)
[Comparison of apical sealing ability of three bioceramic root canal sealers in vitro]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhu J, Huang R, Zeng X, Jiang L, He F.
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, 2013 为了提高锂离子电池用聚烯烃微孔膜的综合性能, 在商用Celgard膜表面涂布ZrO_2无机涂层, 粘结剂选用电池用聚偏氟乙烯。对比分析涂覆前后的隔膜发现, ZrO_2涂层可以显著提高Celgard膜的热尺寸稳定性和热熔化温度, 对提高锂离子电池安全性起到积极作用。同时无机涂层还能明显改善隔膜对电解液的浸润性, 复合隔膜具有更好的保液能力, 以涂有ZrO_2涂层的Celgard膜作为隔膜组装锂离子电池 ...
王学营, 朱永平, 赵丽利
core
[Research progress in three-dimensional-printed bone scaffolds combined with vascularized tissue flaps for segmental bone defect reconstruction]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiDuan Q +6 more
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[Differentiation of stem cells regulated by biophysical cues]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023 Li C, Fan Y, Zheng L.
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, 2014 本发明涉及一种抑制电膜萃取中无机离子迁移的改性微孔纤维膜，所述方法采用浸渍涂覆法，将疏水性聚合物分散在纤维膜膜壁的微孔中，实现对纤维膜进行改性，改性的纤维膜用于吸留有机溶剂作为电膜萃取的中间相。由于纤维膜的骨架中分散的疏水性聚合物提高了膜的疏水性，有效的降低了萃取电流，抑制了无机离子的迁移。同时不影响萃取用有机溶剂和萃取添加剂的添加，有利于有机化合物的萃取。方法简单，易操作，效果好 ...
关亚风, 吴倩, 吴大朋
core
[Challenges and clinical strategies for endodontic microsurgery in the posterior maxillary region]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhang C, Huang X, Hou B.
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, 2019 合成了碳化锆陶瓷有机前驱体,研究了其在热解过程中化学成分和物相组成变化,探讨了从有机高分子向无机陶瓷转化的机理,对碳热还原反应进行了热力学分析。结果表明,前驱体在600℃以下完成了有机结构的断裂、裂解碎片的重排与挥发,600℃以上裂解产物不再具备有机特征;随热解温度升高,无定型碳和单斜相ZrO2逐渐生成,大于1200℃时可检测到立方相ZrC,1400℃时单斜相ZrO2基本消失;1500℃时完成碳热还原反应 ...
张伟刚 +4 more
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[Early effectiveness of total talar replacement with three-dimensional-printed talus prostheses in steroid-induced talar avascular necrosis]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiCao B +11 more
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, 2008 在调节剂柠檬酸铵的作用下,采用溶胶凝胶法制备了Y稳定的Zr-Co粉体,经高温烧结制得致密陶瓷薄膜。利用场发射扫描电镜(SEM)表征了Zr-Co粉体的形貌特征和烧结后的陶瓷薄膜结构,热重(TG/DTA)分析了Zr-Co粉体烧结过程的失重和相转变吸放热过程,X射线衍射(XRD)分析跟踪了不同温度段烧结体系的组成变化趋势,在此基础上对粉体烧结后陶瓷薄膜的防氧化效果进行了分析,结果表明:温度对粉体的颗粒形貌和晶相结构有较大的影响,高温烧结的粉体性质稳定,经过1200℃烧结后的陶瓷膜层具有很好的致密性 ...
王建昌 +4 more
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[Development of flexible multi-phase barium titanate piezoelectric sensor for physiological health and action behavior monitoring]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZeng Q, Han S, Liang Y, Tian X.
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