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	An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文 OAI收割 Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101 作者: HXMT \| 收藏 \| 浏览/下载：60/0 \| 提交时间：2022/02/08 accretion accretion disks black hole physics X-rays: binaries time Astrophysics - High Energy Astrophysical Phenomena Abstract: Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions. Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst. Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.
	Roles of intracellular fibroblast growth factors in neural development and functions 期刊论文 OAI收割 SCIENCE CHINA-LIFE SCIENCES, 2012, 卷号: 55, 期号: 12, 页码: 1038-1044 作者: Zhang, X 收藏 \| 浏览/下载：36/0 \| 提交时间：2013/06/04 FACTOR HOMOLOGOUS FACTORS GATED SODIUM-CHANNELS MICE LACKING FIBROBLAST-GROWTH-FACTOR-14 LINKED MENTAL-RETARDATION DORSAL-ROOT GANGLION FOLLISTATIN-LIKE 1 NEURONAL MIGRATION NEUROPATHIC PAIN FACTOR FAMILY INTELLECTUAL DISABILITY
	Endosome-mediated retrograde axonal transport of P2X(3) receptor signals in primary sensory neurons 期刊论文 OAI收割 CELL RESEARCH, 2012, 卷号: 22, 期号: 4, 页码: 677-696 作者: Zhang, Xu 收藏 \| 浏览/下载：40/0 \| 提交时间：2012/07/13 P2X(3) receptor retrograde transport Rab7 signaling endosomes lipid raft NERVE GROWTH-FACTOR NEUROPATHIC PAIN LIPID RAFTS PHOSPHORYLATED ERK INFLAMMATORY PAIN MOLECULAR MOTORS MICE LACKING FACTOR CREB ATP BINDING
	Molecular regulation of sexual preference revealed by genetic studies of 5-HT in the brains of male mice 期刊论文 OAI收割 NATURE, 2011, 卷号: 472, 期号: 7341, 页码: 95-U125 Liu, Yan; Jiang, Yun'ai; Si, Yunxia; Kim, Ji-Young; Chen, Zhou-Feng; Rao, Yi 收藏 \| 浏览/下载：22/0 \| 提交时间：2012/07/13 PARA CHLOROPHENYLALANINE COPULATORY BEHAVIOUR MALE RATS SEROTONIN LACKING INNATE TRP2 MEN
	Application of CMOS APS star tracker with large FOV in attitude and angular velocity determination (EI CONFERENCE) 会议论文 OAI收割 Advanced Sensor Systems and Applications III, November 12, 2007 - November 14, 2007, Beijing, China Lu D.; Guang J.; Shaoju W.; Tao C. 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/03/25 The paper deals with the spacecraft attitude determination problem using a new kind of star tracker with large FOV based on CMOS APS. Star tracker has been developed since 1970s and proved to be the most accurate sensor ever used in the spacecraft attitude determination systems. But the traditional CCD star tracker also has some disadvantages such as small FOV high power consumption low sample rate and low working angular rate limit which prevent the use of CCD star tracker in attitude large angle maneuvering process. The new kind of star tracker based on CMOS APS has no such disadvantages and is more applicable on modern low-cost agile small satellites. Its higher sample rate and working angular rate limit over traditional CCD star tracker make it more adapt for spacecraft angular velocity determination. Because of the large FOV of the star tracker the mathematical model of traditional CCD star tracker with a small FOV is not appropriate. So a new mathematical model was quoted to fit the star tracker with a large FOV. An alternative adaptive algorithm was also introduced in the paper. It can help the EKF algorithm work lacking of accurate covariance of the observation noise. An optimal estimation algorithm was used to estimate the angular velocity directly from the star tracker measurements. Mathematic simulation results indicate the CMOS APS star tracker can give accurate attitude information and estimated angular rate. The method can be used as the chief attitude determination system design of low-cost satellite without gyros or be used as a backup strategy in the event of gyro failures to enhance the reliability of the attitude determination system.
	Upregulation of acid-sensing ion channel ASIC1a in spinal dorsal horn neurons contributes to inflammatory pain hypersensitivity 期刊论文 OAI收割 JOURNAL OF NEUROSCIENCE, 2007, 卷号: 27, 期号: 41, 页码: 11139-11148 Duan, Bo; Wu, Long-Jun; Yu, Yao-Qing; Ding, Yu; Jing, Liang; Xu, Lin; Chen, Jun; Xu, Tian-Le(徐天乐) 收藏 \| 浏览/下载：23/0 \| 提交时间：2012/07/23 acid-sensing ion channel spinal dorsal horn calcium sensitization plasticity inflammation chronic pain STIMULATED ADENYLYL CYCLASES BEHAVIORAL SENSITIZATION SYNAPTIC PLASTICITY NMDA RECEPTOR MICE LACKING RAT CALCIUM CORD MECHANISMS EXPRESSION
	Low K+ promotes NF-kappa B/DNA binding in neuronal apoptosis induced by K+ loss 期刊论文 OAI收割 MOLECULAR AND CELLULAR BIOLOGY, 2006, 卷号: 26, 期号: 3, 页码: 1038-1050 Tao, YM; Yan, D; Yang, QY; Zeng, R; Wang, YZ 收藏 \| 浏览/下载：25/0 \| 提交时间：2012/07/23 B TRANSCRIPTION FACTORS CYTOCHROME-C RELEASE BCL-X IN-VITRO LYMPHOCYTE-PROLIFERATION SENSORY NEURONS PROTEIN-KINASE MICE LACKING CELL-DEATH ACTIVATION
	Ion channels mediate proton transduction in peripheral pain perception 期刊论文 OAI收割 PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS, 2004, 卷号: 31, 期号: 5, 页码: 393-397 Wu, LJ; Xu, TL(徐天乐) 收藏 \| 浏览/下载：21/0 \| 提交时间：2012/07/23 pain tissue acidosis ion channels CAPSAICIN RECEPTOR P2X RECEPTORS MICE LACKING K+ CHANNEL NEURONS RAT NOCICEPTION STIMULI FAMILY PH
	GDNF acutely potentiates Ca2+ channels and excitatory synaptic transmission in midbrain dopaminergic neurons 期刊论文 OAI收割 NEUROSIGNALS, 2003, 卷号: 12, 期号: 2, 页码: 78-88 Wang, J; Chen, GQ; Lu, B; Wu, CP 收藏 \| 浏览/下载：31/0 \| 提交时间：2012/07/23 neurotrophic factors voltage-gated calcium channels calcium imaging neuronal culture substantia nigra NEUROTROPHIC FACTOR GDNF NIGRA PARS COMPACTA MICE LACKING GDNF IN-VIVO NONDOPAMINERGIC NEURONS SUBSTANTIA-NIGRA NERVOUS-SYSTEM NEUROMUSCULAR-JUNCTIONS RECEPTOR SUBUNITS RAT