Results 51 to 60 of about 12,118 (294)

Sudden breakdown of effective field theory near cool Kerr-Newman black holes

Journal of High Energy Physics
It was recently shown that (near-)extremal Kerr black holes are sensitive probes of small higher-derivative corrections to general relativity. In particular, these corrections produce diverging tidal forces on the horizon in the extremal limit.
Gary T. Horowitz, Maciej Kolanowski, Grant N. Remmen, Jorge E. Santos   +3 more
doaj   +1 more source

Tidal Forces Around Black-Bounce-Reissner–Nordström Black Hole

Universe
The central singularity present in black hole (BH) spacetimes arising in the general theory of relativity (GR) can be avoided by using various methods. In the present work we have investigated the gravitational effect of one of such spacetime known as a ...
Rashmi Uniyal
doaj   +1 more source

Synchronization‐Dissipation in the Cardiorespiratory System

Advanced Science, EarlyView.
By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Joshua R. Border, Alain Nogaret, Andrew Lefevre, Vishal Jain   +3 more
wiley   +1 more source

A Piezo‐Mimetic Ionic Hydrogel Harnessing Joint Motion for Cartilage Repair

Advanced Science, EarlyView.
A piezo‐mimetic ionic hydrogel converts mechanical deformation into bioactive ionic currents via stress‐induced asymmetric ion migration. Coupled with sustained Mg2+ release, this mechano‐electrochemical platform bridges mechanical loading and cellular signaling, enabling load‐adaptive stimulation and enhanced cartilage regeneration. ABSTRACT Articular
Chenyuan Gao, Xinyu Wang, Zhifeng Wu, Xinya Zhang, Xiao Geng, Ti Zhang, Yue Wang, Hongwei Xia, Jun Zhang, Xianbo Qiu, Cuiru Sun, Yingjie Yu, Wenli Dai, Hua Tian, Qing Cai   +14 more
wiley   +1 more source

Superposing tidal force fields

European Journal of Physics, 2023
Abstract The motion of the Earth relative to the Sun’s inertial frame of reference, is a superposition of the motion of the Earth around the common center of mass of the Moon and the Earth and the motion of that center of mass around the Sun.
openaire   +2 more sources

Partially penetrating lake-aquifer interaction in a laboratory-scale tidal setting

, 2021
Freshwater lakes close to the coast are important ecotones with strong functional dependency on ocean forces. Tides are likely to create dynamic lake-groundwater interactions, which have not been previously assessed for partially penetrating lakes.
Werner, AD, Cartwright, N, Jazayeri, A
core   +1 more source

Targeting PLD3 Reverses the Immunosuppressive Niche by Reprogramming Tumor‐Associated Macrophages and Potentiates Antitumor Immunity

Advanced Science, EarlyView.
PLD3 activates the lysosomal‐AKT‐NF‐κB axis to drive cellular senescence in macrophages, establishing an immunosuppressive TME by limiting the infiltration of cytotoxic T, NK, and NKT cells, which confers resistance to anti‐PD‐1 therapy. Abrine inhibits PLD3 expression, restoring antitumor immunity and synergizing with anti‐PD‐1 treatment.
Xingtu Qin, Qiong Li, Xuemei Xu, Yuhan Wu, Yin Zhu, Jieqiong Wu, Yuan Fang, Qiubei Chen, Shuyang Wang, Jiang Yu, Yaping Ye, Hongli Jiao   +11 more
wiley   +1 more source

The Importance of Tidal Forces in Molecular Cloud Dynamics

The Astrophysical Journal
We investigate the role of tidal forces in molecular cloud formation by examining how apparent boundedness, as diagnosed by the classical virial parameter, relates to the actual gravitational state of clouds subject to tidal forces from their environment.
JinWoo Lee, Alexa Saur, Mordecai-Mark Mac Low, Hui Li   +3 more
doaj   +1 more source

Spatio-Temporal Evolution Monitoring and Analysis of Tidal Flats in Beibu Gulf From 1987 to 2021 Using Multisource Remote Sensing

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Tidal flats are an important part of coastal wetland systems and play an irreplaceable role in maintaining the health of global coastal ecosystems, resisting natural coastal disasters, and sequestering blue carbon. For the coastal zone around Beibu Gulf,
Ertao Gao, Guoqing Zhou, Shuxian Li, Bolin Fu, Yunzhi Xiao, Yanping Lan, Feng Wang, Jiasheng Xu, Qiang Zhu, Yuhang Bai   +9 more
doaj   +1 more source

The harder they fall, the bigger they become: tidal trapping of strings by microstate geometries

Journal of High Energy Physics, 2021
We consider the fate of a massless (or ultra-relativistic massive) string probe propagating down the BTZ-like throat of a microstate geometry in the D1-D5 system.
Emil J. Martinec, Nicholas P. Warner
doaj   +1 more source