Results 51 to 60 of about 848,333 (267)

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

Identification Method of Critical Routes in Aviation Network Based on Double Capacity Identification Standard

Hangkong gongcheng jinzhan, 2019
A method of identifying critical routes in the aviation network based on dual capacity identification standard is used for improving the singleness of the traditional identification method and incomplete evaluation index of network performance.
Li Jiawei, Liu Fei, Wu Minggong, Yu Minjian, Kang Runzhe   +4 more
doaj   +1 more source

Force Control of a Space Manipulator

Journal of Robotics and Mechatronics, 2000
This paper deals with the force control of a space manipulator for a sample-return mission. There are two difficulties in force control of this class of space manipulator: One is that a space robot has no fixed point in space and moves when its manipulator exerts force on the environment.
Katsuyoshi Tsujita, Kazuo Tsuchiya, Yousuke Kawano   +2 more
openaire   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Research on Integrated Decision-Control Cooperative Target Assignment for Cross-Domain Unmanned Systems Based on a Bi-Level Optimization Framework

Drones
Addressing prevalent challenges in current cooperative task assignment methods for cross-domain unmanned swarm, such as the disconnection between decision-making and execution processes, and the inadequate incorporation of platform kinematic constraints,
Aoyu Zheng, Xiaolong Liang, Zhiyang Zhang, Yuyan Xiao, Jiaqiang Zhang   +4 more
doaj   +1 more source

Evaluation Method of Usability of Low Altitude Airspace ResourcesBased on the Regression Analysis

Hangkong gongcheng jinzhan, 2019
Low altitude airspace resources has always been the development bottleneck of the general aviation industry, and is also one of the key factors in restricting the development of general aviation in China. Based on theoretical research and field research,
Wang Zekun, Wu Minggong, Wen Xiangxi, Nie Dangmin, Jiang Xurui   +4 more
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Hierarchical Target Tracking for Unmanned Aerial Vehicle Swarms with Distributed Optimization and Affine Control

Drones
Target tracking of unmanned aerial vehicle (UAV) swarms remains a significant challenge due to highly maneuverable target swarms and complex environments.
Han Wang, Xiaolong Liang, Jiaqiang Zhang, Yueqi Hou, Aiwu Yang   +4 more
doaj   +1 more source