Results 91 to 100 of about 10,165,445 (355)

Spectro-polarimetric Properties of Sunquake Sources in X1.5 Flare and Evidence for Electron and Proton Beam Impacts

The Astrophysical Journal, 2023
The first significant sunquake event of Solar Cycle 25 was observed during the X1.5 flare of 2022 May 10, by the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory.
Alexander G. Kosovichev, Viacheslav M. Sadykov, John T. Stefan   +2 more
doaj   +1 more source

Instabilities and Topological Defects in Active Nematics

, 2013
We study a continuum model of an extensile active nematic to show that mesoscale turbulence develops in two stages: (i) ordered regions undergo an intrinsic hydrodynamic instability generating walls, lines of stong bend deformations, (ii) the walls relax
Golestanian, Ramin, Thampi, Sumesh P., Yeomans, Julia M.   +2 more
core   +1 more source

Multilevel Analysis of Oscillation Motions in Active Regions of the Sun [PDF]

, 2011
We present a new method that combines the results of an oscillation study made in optical and radio observations. The optical spectral measurements in photospheric and chromospheric lines of the line-of-sight velocity were carried out at the Sayan Solar ...
Abramov-Maximov, V. E., Chupin, S. A., Gelfreikh, G. B., Kobanov, N. I., Shibasaki, K.   +4 more
core   +1 more source

A SYSTEMATIC SURVEY OF HIGH-TEMPERATURE EMISSION IN SOLAR ACTIVE REGIONS [PDF]

, 2012
The recent analysis of observations taken with the EUV Imaging Spectrometer and X-Ray Telescope instruments on Hinode suggests that well-constrained measurements of the temperature distribution in solar active regions can finally be made.
H. Warren, A. Winebarger, D. Brooks
semanticscholar   +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

The Radial Distribution of Magnetic Helicity in the Solar Convective Zone: Observations and Dynamo Theory

, 2005
We continue our attempt to connect observational data on current helicity in solar active regions with solar dynamo models. In addition to our previous results about temporal and latitudinal distributions of current helicity (Kleeorin et al.
Baker, Bao, Bao, Bao, Benevolenskaya, Benevolenskaya, Blackman, Brandenburg, Brandenburg, Brandenburg, Choudhuri, Collin, Covas, Covas, D. Moss, D. Sokoloff, Galitski, Gruzinov, H. Zhang, I. Rogachevskii, K. Kuzanyan, Kleeorin, Kleeorin, Kleeorin, Kleeorin, Kleeorin, Krause, Kuzanyan, Kuzanyan, Kuzanyan, Longcope, Makarov, Moffatt, Moss, N. Kleeorin, Obridko, Ossendrijver, Parker, Pevtsov, Pouquet, Rogachevskii, Rogachevskii, Rüdiger, Schou, Seehafer, Spiegel, Spruit, Subramanian, Tobias, Tobias, V. Lamburt, Vishniac, Zhang, Zhang, Zhang   +54 more
core   +2 more sources

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

Comparing Simulations of Rising Flux Tubes Through the Solar Convection Zone with Observations of Solar Active Regions: Constraining the Dynamo Field Strength [PDF]

, 2012
We study how active-region-scale flux tubes rise buoyantly from the base of the convection zone to near the solar surface by embedding a thin flux tube model in a rotating spherical shell of solar-like turbulent convection. These toroidal flux tubes that
M. A. Weber, Yuhong Fan, M. Miesch
semanticscholar   +1 more source

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

FEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

Self-reported domain-specific and accelerometer-based physical activity and sedentary behaviour in relation to psychological distress among an urban Asian population

International Journal of Behavioral Nutrition and Physical Activity, 2018
Background The interpretation of previous studies on the association of physical activity and sedentary behaviour with psychological health is limited by the use of mostly self-reported physical activity and sedentary behaviour, and a focus on Western ...
A. H. Y. Chu, R. M. van Dam, S. J. H. Biddle, C. S. Tan, D. Koh, F. Müller-Riemenschneider   +5 more
doaj   +1 more source