Results 111 to 120 of about 715,823 (153)

超临界煤油超声速燃烧特性实验 Experiments on Supersonic Combustion of Supercritical Kerosene

open access: yes, 2006
针对各种温度、压力下,马赫数2.5流场中超临界煤油的超声速燃烧性能进行了实验研究。研制并测试了一个新型二级煤油加热系统,该系统能够把0.8kg的煤油在5.5MPa压力下加热至至950K而不产生严重的结碳。超声速燃烧试验表明,在相同的来流和燃料当量比条件下,超临界煤油的燃烧效率比室温煤油提高10%~15 ...
俞刚, 范学军
core  

[Value of shear wave elastography in the early diagnosis of DPN in patients with type 2 diabetes mellitus]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Zhang YJ   +7 more
europepmc   +1 more source

动态三维超声心动图诊断左心瓣膜疾病的价值研究

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2008
【目的】 探讨动态三维超声心动图诊断左心系统瓣膜疾病的临床应用价值?【方法】 应用动态三维(3D)重建技术研究60例有左心系统瓣膜疾病的患者?全部病例经胸壁二维超声(TTE)?经食道超声(TEE)检查及3D 重建,形成动态三维超声心动图,观察瓣膜的形态?结构及活动情况?对49例行手术患者观察术中瓣膜情况并与二维及3D图像进行对比?对行主动脉瓣置换术者将TTE?TEE及3D状态下的主动脉瓣环最大径测值与人工瓣之间进行线性相关分析并建立回归方程?【结果】 3D重建能显示瓣膜的整体结构 ...
doaj  

[Ultrasound technologies' new clinical application for chronic liver diseases]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi
Xiao MY, Lu X, Jin JY, Wu ML, Ren J.
europepmc   +1 more source

[Clinical application value of sST2 in patients with heart failure]. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban
Li S, Tang H, Chen R, Zhang X.
europepmc   +1 more source

Home - About - Disclaimer - Privacy