Results 1 to 10 of about 3,990 (101)

[Guideline for allogeneic hematopoietic stem cell transplantation in the treatment of transfusion-dependent thalassemia in China (2026)]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Committee of Thalassemia Prevention and Treatment   +6 more
europepmc   +1 more source

电机电流—振动—旋转角度多特征分析的真空有载分接开关故障诊断研究

open access: yesGaoya dianqi
有载分接开关的故障诊断是保证变压器安全运行的重要措施。文中通过检测110 kV变压器真空有载分接开关(OLTC)驱动电机电流、传动轴旋转角度和3个振动信号,分析了OLTC切换过程中电机电流正负脉冲波形、旋转角度与振动信号。采用巴特沃斯高通滤波器和时频域分析对测试信号进行处理,提取了幅值、均值、最大/最小值、频域幅值平均值和重心频率等多种特征参量。基于电气、振动与角度等多元信息特征分析,提出了基于随机森林的真空OLTC机械故障诊断方法,获得了正常工况、传动轴不同松动程度 ...
董青迅   +5 more
doaj  

[The application of nanoparticles in the treatment and prevention of pathological scars]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Huang Y, Zhao L, Jin Z, Cui A.
europepmc   +1 more source

圆钢管混凝土柱-预应力钢筋混凝土梁混合连接节点抗震性能研究

open access: yesJianzhu Gangjiegou Jinzhan
为研究圆钢管混凝土(round concrete-filled steel tubular, RCFST)柱-预应力钢筋混凝土(prestressed reinforced concrete, PRC)梁混合连接节点的抗震性能,文中依托某高铁站候车层的RCFST柱-PRC梁大跨度结构,设计了两个缩尺比例为1∶5的混合连接节点试件,并对其开展了低周往复加载试验研究,分析了有无工字钢牛腿试件的破坏模式、延性、刚度退化和滞回耗能能力。采用ABAQUS有限元软件建立了精细化的有限元分析模型 ...
李贝贝   +4 more
doaj  

Home - About - Disclaimer - Privacy