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Continuous genetic adaptation to high elevations of alpine bamboos in the Hengduan Mountains, Southwest China 期刊论文  OAI收割
JOURNAL OF SYSTEMATICS AND EVOLUTION, 2023
作者:  
Luo,Li-Ying;  Jin,Gui-Hua
  |  收藏  |  浏览/下载:19/0  |  提交时间:2024/07/10
Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously 期刊论文  OAI收割
The Astrophysical Journal, 2021, 卷号: 921, 页码: 179
作者:  
HXMT
  |  收藏  |  浏览/下载:25/0  |  提交时间:2022/02/08
Solar flares  Solar oscillations  Solar ultraviolet emission  Solar  x-ray emission  Solar radio emission  1496  1515  1533  1536  1522  Astrophysics - Solar and Stellar Astrophysics  Abstract: Quasi-periodic pulsations (QPPs), which usually appear as temporal pulsations of the total flux, are frequently detected in the light curves of solar/stellar flares. In this study, we present the investigation of nonstationary QPPs with multiple periods during the impulsive phase of a powerful flare on 2017 September 6, which were simultaneously measured by the Hard X-ray Modulation Telescope (Insight-HXMT), as well as the ground-based BLENSW. The multiple periods, detected by applying a wavelet transform and Lomb-Scargle periodogram to the detrended light curves, are found to be ~20-55 s in the Ly`and mid-ultraviolet Balmer continuum emissions during the flare impulsive phase. Similar QPPs with multiple periods are also found in the hard X-ray emission and low-frequency radio emission. Our observations suggest that the flare QPPs could be related to nonthermal electrons accelerated by the repeated energy release process, i.e., triggering of repetitive magnetic reconnection, while the multiple periods might be modulated by the sausage oscillation of hot plasma loops. For the multiperiodic pulsations, other generation mechanisms could not be completely ruled out.  
An Octave-Spanning, Kerr-Lens Mode-Locked Ti:sapphire Oscillator with Double-Chirped Mirrors and BaF2 期刊论文  OAI收割
CHINESE PHYSICS LETTERS, 2012, 卷号: 29, 期号: 11
Zhang, L; Han, HN; Zhang, Q; Wei, ZY
收藏  |  浏览/下载:84/0  |  提交时间:2013/09/17
Direct observation of coherent spin transfer processes in an InGaAs/GaAs quantum well via two-color time-resolved Kerr rotation measurements 期刊论文  OAI收割
semiconductor science and technology, 2008, 卷号: 23, 期号: 7, 页码: art. no. 075021
Ruan, XZ; Sun, BQ; Ji, Y; Yang, W; Zhao, JH; Xu, ZY
收藏  |  浏览/下载:69/4  |  提交时间:2010/03/08
Effect of initial chirp on supercontinuum generation by femtosecond pulse in photonic crystal fibers 期刊论文  OAI收割
ACTA PHYSICA SINICA, 2006, 卷号: 55, 期号: 4, 页码: 1815
Liu, WH; Wang, YS; Liu, HJ; Duan, ZL; Zhao, W; Li, YF; Peng, QJ; Xu, ZY
收藏  |  浏览/下载:24/0  |  提交时间:2013/09/17
Few-cycle spatiotemporal soliton wave excited by filamentation of a femtosecond laser pulse in materials with anomalous dispersion 期刊论文  OAI收割
phys. rev. a, 2006, 卷号: 74, 期号: 4, 页码: 43801
刘建胜; 李儒新; 徐至展
收藏  |  浏览/下载:1034/83  |  提交时间:2009/09/18
Coherence measurement of white light emission from femtosecond laser propagation in air 期刊论文  OAI收割
CHINESE PHYSICS LETTERS, 2005, 卷号: 22, 期号: 10, 页码: 2608
Jin, Z; Zhang, J; Liu, YQ; Li, K; Yuan, XH; Hao, ZQ; Zheng, J; Lu, X; Li, YT; Wang, ZH; Ling, WJ; Wei, ZY
收藏  |  浏览/下载:65/0  |  提交时间:2013/09/17
Nonlinear copropagation of two optical pulses of different frequencies in photonic crystal fibers 期刊论文  OAI收割
appl. phys. b-lasers opt., 2005, 卷号: 80, 期号: 3, 页码: 291, 294
Cheng C; Wang X; Fang Z; Shen B
收藏  |  浏览/下载:1188/115  |  提交时间:2009/09/18
Space-frequency coupling, conical waves, and small-scale filamentation in water 期刊论文  OAI收割
phys. rev. a, 2005, 卷号: 72, 期号: 5, 页码: 53817
刘建胜; Schroeder H; Chin SL; 李儒新; Yu W; 徐至展
收藏  |  浏览/下载:922/119  |  提交时间:2009/09/18
Nonlinear propagation of fs laser pulses in liquids and evolution of supercontinuum generation 期刊论文  OAI收割
opt. express, 2005, 卷号: 13, 期号: 25, 页码: 10248, 10259
刘建胜; Schroeder H; Chin SL; 李儒新; 徐至展
收藏  |  浏览/下载:1040/57  |  提交时间:2009/09/18