Results 41 to 50 of about 512,842 (292)

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

TNSA based proton acceleration by two oblique laser pulses in the presence of an axial magnetic field

New Journal of Physics
We employ two-dimensional particle-in-cell simulations to examine, in detail, the effect of a kilo-Tesla magnetic field applied along the normal of a flat TNSA target on the cutoff energy of protons/ions.
Imran Khan, Vikrant Saxena
doaj   +1 more source

An investigation of the emittance of escaping fast electron beams from planar and nanowire targets

High Power Laser Science and Engineering
Fast electron generation and transport in high-intensity laser–solid interactions induces X-ray emission and drives ion acceleration. Effective production of these sources hinges on an efficient laser absorption into the fast electron population and ...
E. J. Hume, P. Köster, F. Baffigi, F. Brandi, D. Calestani, G. Cristoforetti, L. Fulgentini, L. Labate, A. Marasciulli, S. Morris, D. Palla, M. Salvadori, M. Villani, L. A. Gizzi, K. L. Lancaster   +14 more
doaj   +1 more source

Particle simulation of plasmons

Nanophotonics, 2020
Particle simulation has been widely used in studying plasmas. The technique follows the motion of a large assembly of charged particles in their self-consistent electric and magnetic fields.
Ding Wen Jun, Lim Jeremy Zhen Jie, Do Hue Thi Bich, Xiong Xiao, Mahfoud Zackaria, Png Ching Eng, Bosman Michel, Ang Lay Kee, Wu Lin   +8 more
doaj   +1 more source

High brilliance γ-ray generation from the laser interaction in a carbon plasma channel

Frontiers in Physics, 2022
The generation of collimated, high brilliance γ-ray beams from a structured plasma channel target is studied by means of 2D PIC simulations. Simulation results reveal an optimum laser pulse duration of 20 fs for generating photon beams of brilliances up ...
Christian Heppe, Naveen Kumar
doaj   +1 more source

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

On the Numerical Dispersion of Electromagnetic Particle-In-Cell Code : Finite Grid Instability [PDF]

, 2014
The Particle-In-Cell (PIC) method is widely used in relativistic particle beam and laser plasma modeling. However, the PIC method exhibits numerical instabilities that can render unphysical simulation results or even destroy the simulation.
Albright, B. J., Huang, C. -K., Meyers, M. D., Yi, S. A., Zeng, Y.   +4 more
core   +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

Particle In Cell Simulation of Combustion Synthesis of TiC Nanoparticles

, 2004
A coupled continuum-discrete numerical model is presented to study the synthesis of TiC nanosized aggregates during a self-propagating combustion synthesis (SHS) process. The overall model describes the transient of the basic mechanisms governing the SHS
Badhuri, Bardenhagen, Burgess, Carslaw, de Gennes, Dunmead, Frenkel, G. Lapenta, G. Maizza, G. Zuccaro, Hockney, Kanury, Lakshmikantha, Lakshmikantha, Makino, Merzhanov, Polson, Rapaport, Reif, Saad, Tanabe, Touloukian, Touloukian, Weiner   +23 more
core   +1 more source

Hamiltonian Particle-in-Cell methods for Vlasov–Poisson equations

Journal of Computational Physics, 2022
In this paper, Particle-in-Cell algorithms for the Vlasov-Poisson system are presented based on its Poisson bracket structure. The Poisson equation is solved by finite element methods, in which the appropriate finite element spaces are taken to guarantee that the semi-discretized system possesses a well defined discrete Poisson bracket structure. Then,
Anjiao Gu, Yang He, Yajuan Sun
openaire   +3 more sources