Results 61 to 70 of about 3,986 (106)

[Clinical outcomes of small-size grafts in auxiliary liver transplantation for the treatment of portal hypertension]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi
Ju HF   +9 more
europepmc   +1 more source

[Hereditary erythrocytosis caused by a novel EGLN1 gene mutation: a case report]. [PDF]

open access: yesZhonghua Xue Ye Xue Za Zhi
Zhang QG   +5 more
europepmc   +1 more source

硝酸铝掺杂氧化锌压敏电阻的制备及性能研究

open access: yesDianci bileiqi
采用固相烧结法制备ZnO-Bi2 O3基压敏电阻,研究了不同比例Al(NO3)·9 H2 O的掺杂对ZnO压敏电阻微观形貌、结构和电气性能的影响。通过X射线衍射仪(XRD)、场发射扫描电子显微镜(FESEM)及电化学工作站分别对样品的物相、形貌及阻抗性能进行表征。结果表明:Al (NO3)·9 H2 O的加入不仅具有促进ZnO晶粒生长和提升晶粒均匀分布的作用,而且能显著降低ZnO晶粒电阻,进而降低残压比。在Al(NO3)·9 H2 O添加量为(0 ~0.015)%(摩尔分数,下同)范围内 ...
王国群   +7 more
doaj  

[Effects of retropubic and obturator urethral suspension on postoperative maximum flow rate and residual urine volume]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Wang Q   +6 more
europepmc   +1 more source

[Trends of disease burden on spinal cord injury in China from 1990 to 2023]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Yang F, Han Y, Pan W, Luo X.
europepmc   +1 more source

金属氧化物避雷器陡波冲击电流试验

open access: yesDianci bileiqi, 1991
IEC37草案用波前1μs冲击电流和40/100μs操作电流作试验。此时需注意阀片残压的初始过冲。许多制造厂做0.1μs波前的电流波试验。这种试验装置很昂贵,又很难与4/10μs电流波装置结合起来使用,而且同一阀片用不同试验装置试验时,残压起始过冲相差很大。
doaj  

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