Results 81 to 90 of about 971,584 (120)

[Association between umbilical cord blood proteome and early infant neurodevelopmental risk]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Mo J, Wang H, Liu J, Li Q, Su T, Ji Y.
europepmc   +1 more source

[Epidemiological characteristics of adult inpatients with diabetes-related chronic non-healing wounds in Hainan province]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Yao JL   +10 more
europepmc   +1 more source

半导体激光二极管发光单元及器件

open access: yes
 本发明公开了一种半导体激光二极管发光单元及器件。该发光单元输出激光的功率大于0.2W,其结构自下往上包括:第一限制层、第一波导层、量子阱层、第二波导层和第二限制层,其中:第一限制层和第二限制层,用于形成PN结进行载流子输入;第一波导层和第二波导层的厚度均介于400~600nm之间,用于形成激光传输的通路;量子阱层,用于作为有源区产生激光。本发明通过增加发光单元中波导层的厚度 ...
王俊, 马骁宇, 熊聪, 郑凯
core  

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