Results 91 to 100 of about 174 (130)
Advances in laser therapies for the scar. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanGuo G +7 more
europepmc +1 more source
近年来，超连续谱(Supercontinuum, SC)因其谱带宽、稳定性和相干性好而在生物医学、光通信、脉冲压缩和光谱学等领域显示出巨大优势和应用前景。光子晶体光纤(Photonic Crystal Fiber, PCF)具有独特的色散特性、超强的非线性和理想的单模特性，是产生SC的优良介质。本文从实验和理论两个方面研究了光子晶体光纤中产生的高平均功率和宽覆盖波段的平坦超连续谱，并简略分析其形成机理。主要研究工作如下： 1.由麦克斯韦方程组出发，介绍了超连续谱产生的理论背景 ...
方平
core
[Extracellular matrix materials and tissue regeneration and repair]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhao L, Xie H.
europepmc +1 more source
[Clinical effects of antibiotic bone cement combined with free anterolateral thigh flap in sequential treatment of diabetic foot ulcer]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2023 Chen W +7 more
europepmc +1 more source
[Characteristics of liver volume and pathological changes with different stages of liver fibrosis in chronic liver disease]. [PDF]
Zhonghua Gan Zang Bing Za ZhiZhu TT +7 more
europepmc +1 more source
[Value of exercise challenge testing in the diagnosis of cough variant asthma in children]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiZhuang DL, Feng Y, Shang YX.
europepmc +1 more source
Construction and verification of a quantitative index system to evaluate the medical and nursing care for the elderly service needs. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023 Li F +7 more
europepmc +1 more source
高功率、大能量的脉冲光纤激光器以其诸多优点被认为是未来脉冲激光器的发展趋势，目前在很多领域已经开始逐渐取代传统激光器。因此，有目的的研究脉冲光纤激光器对促进我国军事、工业、医学等领域的发展有着重要的意义。本论文首先研究了短脉冲在光纤激光器中的产生，并且对作为种子光的脉冲调制半导体激光器进行了实验研究。在此基础上，采用MOPA技术通过光纤放大器将种子光放大从而获得高功率的脉冲激光输出。最后对高峰值功率的激光脉冲在传输光纤和光纤放大器中产生的非线性现象作了系统的实验研究和理论分析 ...
高存孝
core
[Analysis of clinical characteristics of 12 cases of first bite syndrome]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiHuang C, He J, Qi X, Hu P, Ding K.
europepmc +1 more source