Results 61 to 70 of about 41,384 (308)

Energetic Ions at Earth's Quasi-Parallel Bow Shock [PDF]

, 2005
Zugl.: München, Univ., Diss ...
Kis, Arpad, Kis, A.
core  

Energetic particles in magnetotail reconnection

, 2015
We carried out a 3D fully kinetic simulation of Earth's magnetotail magnetic reconnection to study the dynamics of energetic particles. We developed and implemented a new relativistic particle mover in iPIC3D, an implicit Particle-in-Cell code, to ...
Laure, Erwin,, Vencels, Juris, Vencels, Juris,, Divin, Andrey, Markidis, Stefano, Vaivads, Andris, Peng, Ivy Bo,, Vaivads, Andris,, Peng, Ivy Bo, Laure, Erwin, Markidis, Stefano,, Lapenta, Giovanni, Divin, Andrey,   +12 more
core   +1 more source

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

FEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

ENERGETIC PARTICLE DIFFUSION IN STRUCTURED TURBULENCE [PDF]

The Astrophysical Journal, 2012
In the full-orbit particle simulations of energetic particle transport in plasmas, the plasma turbulence is typically described as a homogeneous superposition of linear Fourier modes. The turbulence evolution is, however, typically a nonlinear process, and, particularly in the heliospheric context, the solar wind plasma is inhomogeneous due to the ...
Laitinen, Timo, Dalla, Silvia, Kelly, James   +2 more
openaire   +2 more sources

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

The Impact of Particle Drifts on the Flux of High-energy Solar Protons and He Ions Arriving at Earth from Compact Solar Sources

The Astrophysical Journal
We present a numerical model to investigate the role of the ion mass-charge ratio ( m / q ) in determining the flux of MeV–GeV solar energetic particles (SEPs), released impulsively from a compact source near the Sun at 1 au.
Ashraf Moradi, Joe Giacalone
doaj   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

FEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez, Mikael Oliveberg, Peter Brzezinski   +2 more
wiley   +1 more source

Energetic particle dynamics in Mercury's magnetosphere [PDF]

Journal of Geophysical Research: Space Physics, 2013
We investigate the drift paths of energetic particles in Mercury's magnetosphere by tracing their motion through a model magnetic field. Test particle simulations solving the full Lorentz force show a quasi‐trapped energetic particle population that gradient and curvature drift around the planet via “Shabansky” orbits, passing though high latitudes in ...
B. M. Walsh, A. S. Ryou, D. G. Sibeck, I. I. Alexeev   +3 more
openaire   +1 more source

Space Climate and Solar Energetic Particles [PDF]

Iranian Journal of Astronomy and Astrophysics
In this paper, we investigate the effect of solar corona magnetic activities during 11-year periods and energetic particles on global warming. According to atmospheric changes during the past years, the relationship between these two issues should be ...
Ehsan Tavabi, Sima Zeighami, Yones Kharaghani   +2 more
doaj   +1 more source

Solar Cycle Variation of 0.3–1.29 MeV Nucleon−1 Heavy Ion Composition During Quiet Times Near 1 au in Solar Cycles 23 and 24

The Astrophysical Journal, 2023
We report on the annual variation of quiet-time suprathermal ion composition for C through Fe using Advanced Composition Explorer (ACE)/Ultra-Low Energy Isotope Spectrometer data over the energy range 0.3–1.28 MeV nuc ^−1 from 1998 through 2019, covering
B. L. Alterman, Mihir I. Desai, Maher A. Dayeh, Glenn M. Mason, George Ho   +4 more
doaj   +1 more source