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[Trends in burden of osteoporosis in China from 1990 to 2023 and analysis of epidemiological factors]. [PDF]
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[Application of cell transfer technology in pathological diagnosis of micro-volume cell fluid]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanZhao Y, Diao X, Xiong Y.
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, 1983 本文从科学史的角度考察了“裂纹技术”的思维历史:我国古代防止裂纹导致脆性断裂的实践与认识;我国古代利用裂纹实现脆断的实践与认识,从A.A.Griffith理论到现代的裂纹理论和裂纹技术。着重指出我国古代丰富的裂纹技术实践同现代先进的裂纹理论相结合,提供了诞生这门新技术的条件。从理论上说,它将发展成为断裂力学应用研究的一个新的分支;从实践上说 ...
华觉明, 郎福元, 魏庆同
core
[1 case of recurrent nasal vestibular aggressive angiomyxoma]. [PDF]
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, 2006 综述了纳米面心立方金属的变形机制随晶粒尺寸的减小而发生的变化，即变形机制由晶界处发射不全位错、形成孪晶转变为晶界滑移、晶粒转动。当变形机制为晶界处发射不全位错、形成孪晶时，存在最佳孪晶形成晶粒尺寸范围，此时的孪晶形核应力最小。另一方面，随着晶粒尺寸的减小，在变形机制发生转变的临界晶粒尺寸附近存在韧一脆断裂方式的转变。提高孪晶密度、在纳米晶材料中加入微米晶相形成双峰晶粒材料可以提高纳米晶材料的塑性 ...
刘新才 +5 more
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[A multicenter retrospective clinical study of a simplified comprehensive geriatric assessment system in elderly patients with diffuse large B-cell lymphoma]. [PDF]
Zhonghua Xue Ye Xue Za ZhiLeng JY +13 more
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[Analysis of neural fragility in epileptic zone based on stereoelectroencephalography]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023 Yin N, Jia Z, Wang L, Dong Y.
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[Advances in MRI-based bone quality scoring systems and their clinical applications]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiWang J, Wang L, Song Y.
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Analysis and Improvement of Broken Roll during Finishing Roll for Large Size Hot Rolled Angle Steel [PDF]
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