Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Lanjun Guo"'
Publikováno v:
Journal of Materials Research and Technology, Vol 28, Iss , Pp 1415-1422 (2024)
Micro holes with high aspect ratios are essential for the cooling performance of aero-engines. Challenges persist in deep hole drilling due to the escalating stringent requirements in terms of hole diameters, aspect ratios, and 3D profiles. In this s
Externí odkaz:
https://doaj.org/article/db216b97937c47319e8f8d5dcb05ac51
Publikováno v:
Opto-Electronic Advances, Vol 5, Iss 9, Pp 1-8 (2022)
In this study, an optical setup for generating terahertz (THz) pulses through a two-color femtosecond laser filament was carefully designed to achieve a precise overlap of two-color laser pulses in space and time. β-barium borate (BBO), α-BBO, and
Externí odkaz:
https://doaj.org/article/60554a3cf03840d2aebd04fe145fe1fe
Publikováno v:
Sensors, Vol 23, Iss 20, p 8364 (2023)
Air lasers induced by femtosecond laser filaments play an important role in remote sensing applications. Few studies have been dedicated to the spatial distribution of external-seeded air laser radiation in the laser filament based on the numerical s
Externí odkaz:
https://doaj.org/article/0838ecf8f1d440eaad3523fa4d69367b
Autor:
Xiaohui Ren, Xiaocui Yang, Wei Huang, Kaiyuan Yang, Li Liu, Yong Cui, Lanjun Guo, Hui Qiao, Song Lin
Publikováno v:
Frontiers in Oncology, Vol 12 (2022)
PurposeDirect subcortical motor mapping is the golden criterion to detect and monitor the motor pathway during glioma surgery. Minimal subcortical monopolar threshold (MSCMT) means the minimal distance away from the motor pathway and is critical to d
Externí odkaz:
https://doaj.org/article/8ab0cc01251441fdaef31562a343a3fd
Autor:
Zhiqiang Yu, Lu Sun, Nan Zhang, Jianxin Wang, Pengfei Qi, Lanjun Guo, Quan Sun, Weiwei Liu, Hiroaki Misawa
Publikováno v:
Ultrafast Science, Vol 2022 (2022)
The THz generation efficiency and the plasma density generated by a filament in air have been found anti-correlated when pumped by 800 nm+1600 nm two-color laser field. The plasma density near zero delay of two laser pulses has a minimum value, which
Externí odkaz:
https://doaj.org/article/fb2f8cfac2fe48928741a835c933c95d
Autor:
Pengfei Qi, Wenqi Qian, Lanjun Guo, Jiayun Xue, Nan Zhang, Yuezheng Wang, Zhi Zhang, Zeliang Zhang, Lie Lin, Changlin Sun, Liguo Zhu, Weiwei Liu
Publikováno v:
Sensors, Vol 22, Iss 18, p 7076 (2022)
Femtosecond laser filamentation is a unique nonlinear optical phenomenon when high-power ultrafast laser propagation in all transparent optical media. During filamentation in the atmosphere, the ultrastrong field of 1013–1014 W/cm2 with a large dis
Externí odkaz:
https://doaj.org/article/04fd018aa05941219c18f11c45d55bc8
Autor:
Yongxiang Li, Lanjun Guo
Publikováno v:
Journal of Function Spaces, Vol 2017 (2017)
This paper is concerned with the existence of periodic solutions for the fully second-order ordinary differential equation u′′(t)=ft,ut,u′t, t∈R, where the nonlinearity f:R3→R is continuous and f(t,x,y) is 2π-periodic in t. Under certain i
Externí odkaz:
https://doaj.org/article/c2c2bc1fa82248f9a6df90c8b8b4b8bb
Autor:
Lei Feng, Xuejun Zhang, Dong Guo, Chengxin Li, Xinyu Qi, Yunsong Bai, Jun Cao, Baosheng Sun, Ziming Yao, Jingchun Gao, Lanyue Cui, Lanjun Guo
Publikováno v:
Journal of Shoulder and Elbow Surgery. 31:e405-e412
Brachial plexus injury (BPI) leading to palsy of the upper extremities is the most serious complication of the Woodward procedure for treatment of Sprengel deformity. Intraoperative neuromonitoring (IONM) is widely used for detecting emerging spinal
Autor:
Robert N. Holdefer, Qing Gai, Wengao Zhang, Yansheng Zhang, Qin Liu, LanJun Guo, Jinfeng Wang
Publikováno v:
World Neurosurgery. 154:e245-e253
To evaluate and compare efficacy of intraoperative neurophysiological monitoring (IONM) and intraoperative transcranial Doppler (TCD) techniques for identification of hypoperfusion during carotid artery clamp and hyperperfusion after release of occlu
Autor:
Weiwei Liu, Zeliang Zhang, Qiang Su, Qiang Xu, Lanjun Guo, Zhiqiang Yu, Pengfei Qi, Olga Kosavera, Cheng Gong
Publikováno v:
Optics express. 30(11)
Two-color femtosecond (fs) laser filamentation in the gas medium is an effective way to generate broadband and high intensity terahertz (THz) pulse. The interdigitated photoconductive antenna (iPCA) has the advantages of both broadband detection and