Results 61 to 70 of about 3,312,921 (291)

The Importance of Ambipolar Heating in the Standard Thin Accretion Disk with Outflows

open access: yesThe Astrophysical Journal
This study examines the importance of the thermal effects of ambipolar diffusion (AD), by analyzing the governing properties in the middle and outer regions of a standard thin accretion disk with outflows.
Mahmoud Gholipour   +1 more
doaj   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

On the vertigo due to static magnetic fields. [PDF]

open access: yes, 2013
Vertigo is sometimes experienced in and around MRI scanners. Mechanisms involving stimulation of the vestibular system by movement in magnetic fields or magnetic field spatial gradients have been proposed.
Antunes, Andre   +14 more
core   +2 more sources

Starspots: A Key to the Stellar Dynamo

open access: yesLiving Reviews in Solar Physics, 2005
Magnetic activity similar to that of the Sun is observed on a variety of cool stars with external convection envelopes. Stellar rotation coupled with convective motions generate strong magnetic fields in the stellar interior and produce a multitude of ...
Berdyugina Svetlana V.
doaj  

Zeeman Doppler Imaging of τ Ceti: The Weakest Magnetic Field Detected in a Sun-like Star

open access: yesThe Astrophysical Journal Letters
For nearly a decade, observations have shown that many older Sun-like stars spin faster than predicted, a phenomenon known as weakened magnetic braking (WMB). The leading hypothesis for WMB is a weakening of the large-scale dipole field, which leads to a
Federica Chiti   +3 more
doaj   +1 more source

Rotational Components of the Sun’s Mean Field

open access: yesThe Astrophysical Journal, 2023
This paper uses wavelet transforms to look for the rotational frequencies of the Sun’s mean line-of-sight magnetic field. For a sufficiently high wavelet frequency, the spectra of the dipole, quadrupole, and hexapole field components each show a time ...
Neil R. Sheeley Jr.
doaj   +1 more source

Adenosine triphosphate as a modulator of protein interactions and stability

open access: yesFEBS Open Bio, EarlyView.
ATP is best known as the cell's energy currency, but it also shapes how proteins fold, interact, aggregate and form biomolecular condensates. This review explains the emerging physical principles behind these effects, including weak binding to charged protein regions, magnesium‐dependent behaviour and concentration‐dependent control of protein ...
Shuyuan Tan, Robin Curtis
wiley   +1 more source

Stellar Cycle Variability in Mount Wilson Stars and Dynamo Models: Rotation Rate and Dynamo Number Dependency

open access: yesThe Astrophysical Journal
Similar to the solar cycle, the magnetic cycles of other solar-type stars are also variable. How the variability of the stellar cycle changes with the rotation rate or the dynamo number is valuable information for understanding the stellar dynamo process.
Suyog Garg   +2 more
doaj   +1 more source

Stellar oscillations in the presence of a magnetic field [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1986
We investigate the problem of stellar pulsation in the presence of a magnetic field, for arbitrary frequencies and horizontal wavenumbers. Magnetic effects are strong in a boundary layer close to the stellar surface, but it is possible to identify independent Alfvénic-type modes at sufficient stellar depth.
Campbell, C. G., Papaloizou, J. C. B.
openaire   +2 more sources

Purification and preparation of Marchantia polymorpha Auxin Response Factor 2 for phase separation studies

open access: yesFEBS Open Bio, EarlyView.
We describe detailed protocols for the purification and preparation of Marchantia polymorpha Auxin Response Factor 2 (MpARF2). This protein is fused to an MBP solubility tag and an mNG fluorescent tag and is purified from Escherichia coli. The presented procedures make it possible to study MpARF2 assemblies, which could arise from phase separation ...
Bas Janssen   +5 more
wiley   +1 more source

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