Results 101 to 110 of about 22,114 (152)

An experimental study on high alloy steel by laserinduced breakdown spectroscopy

, 2010
激光诱导击穿光谱具有多元素同时快速分析、无需样品制备、可测固、液、气以及可在线分析等优点，在多个领域具有非常大的应用价值。本文以波长为1064 nm 的激光作为激发源，以海洋光学光谱仪作为分光系统，并利用CCD 探测器采集光谱，在自行搭建的实验平台上以高合金钢为样品，研究激光脉冲能量、检测延时、透镜与样品的距离等实验参数对激光诱导击穿光谱的影响 ...
孙兰香, 杨志家, 丛智博, 孔海洋, 辛勇   +4 more
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[All-arthroscopic reduction and fixation of Pipkin type <b>Ⅰ</b> and <b>Ⅱ</b> femoral head fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Lü J, Wang H, Chen L, Ni Q.
europepmc   +1 more source

Perforation of metal plates under high-speed and high-viscosity liquid jet impacts

, 2003
为了研究射流粘度对穿甲的影响，用火药炮实验装置产生了速度为1．5～2．Okm／s的甘油射流，用曝光时间为180ns的可视化系统对高速甘油射流进行了流场显示。用甘油射流和水射流对4mm厚青铜板及3mm厚钢板进行了穿甲实验，验证了液体的粘弹性增加了射流的穿甲效果。实验还发现甘油的穿甲效果对甘油的体积分数有着依存关系，当体积分数为90 ...
施红辉
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[Wrist arthroscopic Wafer surgery combined with triangular fibrocartilage complex insertion point reconstruction in treatment of Palmer type ⅡC combined with type ⅠB ulnar impingement syndrome]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li Y, Ma M, Ruan X, Fu Y.
europepmc   +1 more source

激光冲击强化系统及其聚焦约束装置

, 2017
本发明提出一种激光冲击强化系统的聚焦约束装置，其特征在于所述聚焦约束装置包括聚焦部件、夹具部件以及约束介质，其中所述聚焦部件与所述夹具部件构成一端开口的腔体，所述约束介质容纳于所述腔体内形成约束层；所述聚焦部件将平行激光光线聚焦于所述腔体开口处，待加工工件可置于所述腔体开口处。上述激光冲击强化系统及其聚焦约束装置，相比于约束层直接接触空气和谐振腔类激光冲击强化系统，将约束层与聚焦部件整合到一起，约束层被约束到装置内部，从而约束层将冲击波约束在装置内部，减少了冲击波的损失 ...
茹浩磊, 杜臻英, 张文武, 焦俊科   +3 more
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[Effectiveness of composite loop plate around coracoid process for reconstructing coracoclavicular ligament in treatment of Rockwood type <b>Ⅲ</b> acute acromioclavicular joint dislocations]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
He H, Li N, Liu M, Wang H, Wang Q, Zhang Y.   +5 more
europepmc   +1 more source

一种水下光缆穿壁密封结构

, 2017
本发明涉及一种水下光缆穿壁密封结构，用于浅海环境通信光缆的快速接驳密封，过渡套的一端与接线盒密封连接，另一端连接有尾盘，穿壁套密封连接于过渡套内，一端内部容置有密封塞、且螺纹连接有密封螺套，另一端由尾盖穿出、且螺纹连接有压紧螺套，压紧螺套内容置有密封塞、且螺纹连接有密封螺套；穿壁套内容置有压紧楔，压紧楔位于压紧螺套与穿壁套一端之间；压紧楔通过压紧螺套的旋入箍紧内层光缆，压紧螺套内的密封塞及穿壁套一端内的密封塞分别通过各自螺纹连接的密封螺套的旋入与内层光缆密封抵接。本发明具有快速安装、结构尺寸小的特点 ...
何震, 孙天俊, 冯迎宾, 张银亮
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[Short-term effectiveness of arthroscopic Lasso-Loop suture combined with Suture Tape augmentation in treatment of lateral ankle instability]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Bu Q, Yao W, Zhang Y, Han F.
europepmc   +1 more source

[Acute<b>-</b>on<b>-</b>chronic liver failure induced by hemochromatosis in a patient with post<b>-</b>hepatitis B cirrhosis: A case report and literature review]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Cai Y, Zhang D, Chen Q.
europepmc   +1 more source

[Construction, Identification, and Expression of Lactococcus lactis-Based Recombinant Vaccine for Echinococcus granulosus]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban, 2023
Li W, Ou X, He A.
europepmc   +1 more source