Results 51 to 60 of about 134,584 (266)

Succinic Acid‐Induced Macrophage Endocytosis Promotes Extracellular Vesicle‐Based Integrin Beta1 Transfer Accelerating Fibroblast Activation and Sepsis‐Associated Pulmonary Fibrosis

Advanced Science, EarlyView.
Lipopolysaccharide (LPS) stimulates the production of succinic acid in lung tissue, which promotes macrophages endocytosis and the formation of multivesicular bodies (MVBs). These MVBs release profibrotic extracellular vesicles (EVs), facilitating the transfer of integrin beta1 (ITGβ1) transfer and subsequently activating fibroblasts, thereby ...
Wenyu Yang, Ri Tang, Yang Zhou, Jinquan Zhang, Shuya Mei, Yawen Peng, Xi Huang, Shunpeng Xing, Yuan Gao, Qiaoyi Xu, Zhengyu He   +10 more
wiley   +1 more source

Glitches in Southern Pulsars [PDF]

International Astronomical Union Colloquium, 2000
Abstract Parkes timing observations of 31 mostly young pulsars over nearly nine years are described. A total of 29 glitches were detected, of which 19 are previously unreported. Twelve glitches were seen in PSR J1341–6220, making this the most frequently glitching pulsar known, and the largest known glitch was detected in PSR J1614–5047 ...
R. Pace, Ben Stappers, Victoria M. Kaspi, Victoria M. Kaspi, Andrew Lyne, Richard N. Manchester, Na Wang, Na Wang, Matthew Bailes   +8 more
openaire   +8 more sources

Decoding the Nature of Coherent Radio Emission in Pulsars I: Observational Constraints

Universe
Radio observations from normal pulsars indicate that the coherent radio emission is excited by curvature radiation from charge bunches. In this review, we provide a systematic description of the various observational constraints on the radio emission ...
Dipanjan Mitra, Rahul Basu, George I. Melikizde   +2 more
doaj   +1 more source

Searching for gravitational waves from the Crab pulsar - the problem of timing noise [PDF]

, 2003
Of the current known pulsars, the Crab pulsar (B0531+21) is one of the most promising sources of gravitational waves. The relatively large timing noise of the Crab causes its phase evolution to depart from a simple spin-down model.
, Abbott B (The LIGO Scientific Collaboration), Dupuis R Woan G, Graham Woan, Jaranowski P, Jones D I, Lyne A, Matthew Pitkin   +7 more
core   +3 more sources

POSTN‐Mediated Interplay of M1 Polarized Macrophage with Tendon‐Derived Stem Cells to Drive Traumatic Heterotopic Ossification Formation through PTK7/ATK Signaling?

Advanced Science, EarlyView.
The mechanism diagram reveals that the formation of trauma‐induced heterotopic ossification (HO) is accompanied by the polarization of macrophages toward the M1 phenotype. Additionally, the extracellular vesicles secreted by M1 macrophages, which contain periostin (POSTN), directly bind to PTK7 in tendon‐derived stem cells (TDSCs).
Hang Liu, Xinyue Li, Mengyi Li, Ziyang Sun, Xu Wang, Juehong Li, Binbin Xu, Qian Chen, Cunyi Fan, Hongjiang Ruan   +9 more
wiley   +1 more source

Pulsar’s Application in Energy Systems: Review of Current Status, Challenges, and Opportunities

Energies
To accelerate progress toward the realization of advanced energy systems, this review explores the potential of pulsar technology to create a more stable, economical, and environmentally friendly energy infrastructure.
Yongxin Zhang, Yuru Wu, Yu Liu, Biao Sun, Jiahui Yang, Naga Lakshmi Thotakura, Kazi Ishrak Ahmed, Qian Liu, Chong Shen, Yilu Liu   +9 more
doaj   +1 more source

An improved solar wind electron-density model for pulsar timing

, 2007
Variations in the solar wind density introduce variable delays into pulsar timing observations. Current pulsar timing analysis programs only implement simple models of the solar wind, which not only limit the timing accuracy, but can also affect ...
Allen C. W., Cognard I., G. B. Hobbs, J. L. Han, Lyne A. G., Manchester R. N., R. N. Manchester, Schwenn R., W. A. Coles, X. P. You   +9 more
core   +1 more source

Leveraging Compressed Sensing and Radiomics for Robust Feature Selection for Outcome Prediction in Personalized Ultra‐Fractionated Stereotactic Adaptive Radiotherapy

Advanced Intelligent Systems, EarlyView.
A compressed sensing (CS)‐based feature selection method is proposed to select the most informative elements in the radiomic features extracted from medical images of personalized ultra‐fractionated stereotactic adaptive treatment. The CS‐based approach is able to simplify the feature selection process and enhance the accuracy and robustness of a ...
Yajun Yu, Steve Jiang, Robert Timmerman, Hao Peng   +3 more
wiley   +1 more source

Millisecond pulsar velocities [PDF]

Monthly Notices of the Royal Astronomical Society, 1999
We present improved timing parameters for 13 millisecond pulsars (MSPs), including nine new proper motion measurements. These new proper motions bring to 23 the number of MSPs with measured transverse velocities. In light of these new results we present and compare the kinematic properties of MSPs with those of ordinary pulsars.
Ben Stappers, Shrinivas R. Kulkarni, S. B. Anderson, Maurizio Toscano, Maurizio Toscano, J. S. Sandhu, M. C. Britton, Richard N. Manchester, Richard N. Manchester, Matthew Bailes   +9 more
openaire   +6 more sources

The specifics of pulsar radio emission

Open Astronomy, 2022
A characteristic property of pulsars is pulsed periodic radio emission, which has a high stability of periods. Despite the high stability of the emission periods of pulsars, monitoring the time of arrival of pulses (timing) shows the presence of ...
Losovsky Boris Ya.
doaj   +1 more source