Results 101 to 110 of about 37,560 (159)
, 1983 本文论述了几种结合离散阻尼器于结构以增大其阻尼的方法。假设原结构是无阻尼的,用复数表示加在它的某些离散点上的阻尼器的刚度,推导出了一个对无阻尼结构的刚度阵作局部修改的运动方程,指出了用模态应变能法解决这个问题时的缺点 ...
田千里
core
[Strategic orthodontic treatment for multiple mesioangular impacted molars: a case report]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhan J +5 more
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, 2017 本发明公开了一种长效减阻涂层、其制备方法与应用。该涂层包括氧化锌薄膜层和粘附于所述氧化锌薄膜层表面的长链烷烃层。该方法首先利用化学气相沉积技术在金属丝网上制备双亲性(亲油-亲水)氧化锌薄膜，然后利用聚二甲基硅氧烷对氧化锌薄膜进行修饰改性，使其具备亲油疏水的单亲特性，最后对PDMS改性氧化锌进行浸油处理，从而获得所述长效减阻涂层。本发明的减阻涂层还可通过温度调控而改变减阻效果，并有效克服超疏水减阻技术在高速、高压条件下失效问题，其实现方式是通过将固-气-水界面转变为固-油-水界面 ...
赵文杰 +4 more
core
[Considerations for soft tissue management in endodontic microsurgery]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiHuang J, Gu S.
europepmc +1 more source
[Initial clinical experience and follow-up outcomes of treatment for ureteroileal anastomotic stricture with Allium coated metal ureteral stent]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2020 Dong WM +5 more
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[Application of Mdr2 gene knockout mice in liver disease research]. [PDF]
Zhonghua Gan Zang Bing Za Zhi, 2021 Li M, Ping J, Xu LM.
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Gongye shui chuli为解决循环冷却水系统长期运行造成的结垢与腐蚀问题，开发了含有聚环氧琥珀酸（PESA）、聚天冬氨酸（PASP）和苯并三氮唑（BTA）或甲基苯并三氮唑（TTA）的高效复配阻垢缓蚀剂。通过静态阻垢法测试了在不同PESA与PASP配比下，复合阻垢剂对高浓缩循环水的阻垢性能。由于临界值效应和溶限效应，该复合阻垢剂的最大阻垢率为90.77%。通过电化学测试法评估了不同配方抑制剂在高浓缩循环水中对T2铜的缓蚀性能，结果显示复合阻垢缓蚀剂能同时抑制阴极和阳极反应，最大缓蚀率为95.05%。表面表征结果表明 ...
陶吉全 +6 more
doaj
[Introduction to the recommendations of the EASL clinical practice guidelines for genetic cholestatic liver diseases]. [PDF]
Zhonghua Gan Zang Bing Za ZhiHou W, Zheng SJ.
europepmc +1 more source
[Advances in Research on the Mechanism of Association Between Periodontitis and Diabetes Mellitus]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2023 Li LL, Xie XT, Wu Y, Yan FH.
europepmc +1 more source