Results 31 to 40 of about 17,572 (266)

Strong variation of spin-orbit torques with relative spin relaxation rates in ferrimagnets

Nature Communications, 2023
There has been a lot of interest in using antiferromagnets for magnetic memories, due to their fast dynamics, and resilience to stray fields. Such a memory was supposed to be switched by a spin-orbit torque. Here, Zhu and Ralph find that as a ferrimagnet
Lijun Zhu, Daniel C. Ralph
doaj   +1 more source

Resonant Orbital Dynamics of CBERS Satellites [PDF]

Proceeding Series of the Brazilian Society of Computational and Applied Mathematics, 2016
Synchronous satellites have been studied in literature, due to the research of resonant orbits. In this work, CBERS - 2 (China-Brazil Earth Resource Satellite) satellite is investigated observing resonance effects which compose your orbit. Energy’s curves are observed indicating the presence of Kozai’s resonance in your orbit.
Jarbas Cordeiro Sampaio, Rodolpho Vilhena de Moraes, Sandro da Silva Fernandes   +2 more
openaire   +2 more sources

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

A generalized super-twisting algorithm-based adaptive fixed-time controller for spacecraft pose tracking

Open Astronomy
A generalized super-twisting second-order sliding mode adaptive fixed-time control law, which is used for spacecraft pose tracking in the presence of internal and external uncertainties, is proposed.
Gong Kejie, Wang Yong, Duan Yurui, Mei Yafei, Jiang Yu, Luo Da   +5 more
doaj   +1 more source

Curvature in orbital dynamics [PDF]

American Journal of Physics, 2005
The physical basis and the geometrical significance of the equation for the orbit of a particle moving under the action of external forces is exhibited by deriving this equation in a coordinate-independent representation in terms of the radius of curvature of the orbit.
openaire   +2 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Piecewise expanding maps: combinatorics, dynamics and representation of rational numbers

ESAIM: Proceedings and Surveys, 2014
We establish combinatorial properties of the dynamics of piecewise increasing, continuous, expanding maps of the interval such as description of periodic and pre-periodic points, primitiveness of truncated itineraries and length of ...
Serpa Cristina, Buescu Jorge
doaj   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Dynamics of dual-orbit rotations of nanoparticles induced by spin–orbit coupling

Nanophotonics
Spin–orbit coupling (SOC) in tightly focused optical fields offers a powerful mechanism for manipulating the complex motion of particles. However, to date, such a mechanism has only been applied to the single-orbit motion for particles, while multi ...
Zhang Yu, Lin Qian, Zhuang Zikuan, Lin Fei, Hong Ling, Che Zhen, Zhuo Linqing, Li Yongyao, Zhang Li, Zhao Dongxu   +9 more
doaj   +1 more source