Results 61 to 70 of about 6,293 (280)

Latin America and the Caribbean SARS-CoV-2 Surveillance: Longitudinal Trend Analysis

JMIR Public Health and Surveillance, 2021
BackgroundThe COVID-19 pandemic has placed unprecedented stress on economies, food systems, and health care resources in Latin America and the Caribbean (LAC).
Post, Lori, Ohiomoba, Ramael O, Maras, Ashley, Watts, Sean J, Moss, Charles B, Murphy, Robert Leo, Ison, Michael G, Achenbach, Chad J, Resnick, Danielle, Singh, Lauren Nadya, White, Janine, Chaudhury, Azraa S, Boctor, Michael J, Welch, Sarah B, Oehmke, James Francis   +14 more
doaj   +1 more source

Adaptive, Observer-Based Synchronization of Different Chaotic Systems

Applied Sciences, 2022
In this study, the problem of master–slave synchronization of two different chaotic systems is considered and solved under a novel set of assumptions. The mathematical model of each of them contains unknown, constant parameters.
Jacek Kabziński, Przemysław Mosiołek
doaj   +1 more source

Piezo2 Mediates a Vicious Cycle of “Mechanical Homeostasis Imbalance—Inflammation” in Sensory Nerves and the Cartilage Endplate

Advanced Science, EarlyView.
In a lumbar spine instability model, dorsal root ganglion cells mediate the perception of relevant mechanical stresses through Piezo2 and subsequently release CGRP. CGRP activates the NF‐κB signaling pathway in cartilage endplate cells through the receptor RAMP1.
Hanpeng Xu, Wen Geng, Zhi Du, Yifan Du, Di Wu, Bide Tong, Huaizhen Liang, Xingyu Zhou, Zixuan Ou, Junyu Wei, Kun Wang, Yu Song, Wenbin Hua, Yan Xu, Wencan Ke, Bingjin Wang, Cao Yang   +16 more
wiley   +1 more source

Enhancing Maturation of Human Neuromuscular Organoids via Electrical Stimulation

Advanced Science, EarlyView.
A framework for on‐demand and non‐invasive exposure of human neuromuscular organoids (NMOs) to electrical stimuli is established to promote their maturation. The robustness and effectiveness of different stimulation regimes are evaluated via thorough characterization of organoid tissue structure and contraction capacity. Chronic electrical stimulation,
Chrysanthi‐Maria Moysidou, Inês Afonso Martins, Ismail Amr El‐Shimy, Iacopo Bicci, Donatella Cea, Christina Bukas, Isra Mekki, Mara‐Camelia Rusu, Aylin Nebol, Ines Lahmann, Marie Piraud, Enrico Klotzsch, Mina Gouti   +12 more
wiley   +1 more source

Multi‐Omics Insights Into the Mechanisms of Early Muscle Fiber Difference and Transformation Between Lean‐Type and Chinese Indigenous Pigs

Advanced Science, EarlyView.
Multi‐omics analyses uncover breed‐specific cis‐regulatory landscapes and higher‐order chromatin architectural differences that underlie early postnatal muscle fiber divergence in pigs. A super‐enhancer upstream of PPP3CB recruits MEF2C to activate PPP3CB transcription, while the PPP3CB–MEF2C positive feedback loop promotes oxidative muscle fiber ...
Shuailong Zheng, Hainan Wu, Min Liu, Kunpeng Wu, Shuntao Huang, Zulfiqar Ahmed, Lenox Pius, Mengjin Zhu, Dequan Xu   +8 more
wiley   +1 more source

Robust Adaptive Synchronization of a Class of Uncertain Chaotic Systems with Unknown Time-Delay

Applied Sciences, 2020
In this paper, a robust adaptive control strategy is proposed to synchronize a class of uncertain chaotic systems with unknown time delays. Using Lyapunov theory and Lipschitz conditions in chaotic systems, the necessary adaptation rules for estimating ...
Assef Zare, Seyede Zeynab Mirrezapour, Majid Hallaji, Afshin Shoeibi, Mahboobeh Jafari, Navid Ghassemi, Roohallah Alizadehsani, Amir Mosavi   +7 more
doaj   +1 more source

A new approach to quantify angles and time of changes-of-direction during soccer matches.

PLoS ONE, 2021
Background and aimsSoccer players frequently perform change-of-directions (CODs) at various speeds during matches. However, tracking systems have shown limitations to measure these efforts.
Tomohiro Kai, Shin Hirai, Yuhei Anbe, Yohei Takai   +3 more
doaj   +1 more source

Anti-jerk controllers for automotive applications: A review

, 2020
Anti-jerk controllers, commonly implemented in production vehicles, reduce the longitudinal acceleration oscillations transmitted to the passengers, which are caused by the torsional dynamics of the drivetrain during torque transients.
De Pinto, Stefano, Sorniotti, Aldo, Gruber, Patrick, Scamarcio, Alessandro   +3 more
core   +1 more source

Transferable Deep Reinforcement Learning With Edge‐Contour‐Depth Fusion for Autonomous Wireless Capsule Endoscopy Navigation

Advanced Science, EarlyView.
This study presents an anatomical landmark‐guided DRL framework for autonomous wireless capsule endoscopy navigation. Using a lightweight edge‐contour‐depth fusion module, it achieves over 97% coverage across diverse gastric anatomies. To ensure reliability, a two‐stage sim‐to‐real pipeline with an adaptive dynamic programming controller mitigates ...
Haoxuan Wu, Haitao Gao, Qingyang Liu, Sishen Yuan, Haiyang Fang, Mingwu Su, Baijia Liang, Yongzun Yang, Long Bai, Wenzhen Dong, Dihong Xie, Shijian Su, Jiewen Lai, Shing Shin Cheng, Zhen Li, Xiuli Zuo, Hongliang Ren   +16 more
wiley   +1 more source

Approximate Analytical Solutions of Nonlinear Jerk Equations Using the Parameter Expansion Method

Computation
The Parameter Expansion Method (PEM) is employed to study nonlinear Jerk equations, which are often difficult to solve because of their strong nonlinearity.
Gamal M. Ismail, Galal M. Moatimid, Stylianos V. Kontomaris   +2 more
doaj   +1 more source