Results 51 to 60 of about 1,401,162 (283)

The multidrug and toxin extrusion (MATE) transporter DTX51 antagonizes non‐cell‐autonomous HLS1–AMP1 signaling in a region‐specific manner

open access: yesFEBS Letters, EarlyView.
The Arabidopsis mutants hls1 hlh1 and amp1 lamp1 exhibit pleiotropic developmental phenotypes. Although the functions of the causative genes remain unclear, they act in the same genetic pathway and are thought to generate non‐cell‐autonomous signals.
Takashi Nobusawa, Makoto Kusaba
wiley   +1 more source

Note on NLSM tree amplitudes and soft theorems

open access: yesEuropean Physical Journal C: Particles and Fields
This note provides a new point of view for bootstrapping the tree amplitudes of the nonlinear sigma model (NLSM). We use the universality of single soft behavior, together with the double copy structure, to completely determine the tree amplitudes of the
Kang Zhou, Fang-Stars Wei
doaj   +1 more source

The Classificiation of Kepler B star Variables

open access: yes, 2012
The light curves of 252 B-star candidates in the Kepler data base are analyzed in a similar fashion to that done by Balona et al. (2011) to further characterize B star variability, increase the sample of variable B stars for future study, and to identify
Jackiewicz, Jason   +2 more
core   +1 more source

On Be Star Candidates and Possible Blue Pre-Main Sequence Objects in the Small Magellanic Cloud [PDF]

open access: yes, 2002
Recently the OGLE experiment has provided accurate light curves and colours for about 2 millions stars in the Small Magellanic Cloud. We have examined this database for its content of Be stars, applying some selection criteria, and we have found a sample
Gieren, W.   +3 more
core   +2 more sources

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

The physics and chemistry of circumstellar envelopes of S-stars on the AGB

open access: yes, 2007
The S-stars have been suggested to be a brief transitional phase as stars evolve from oxygen-rich M-type stars into carbon stars, through the dredge up of carbon from He-shell burning.
Olofsson, H.   +2 more
core   +1 more source

Do Hydrogen-Deficient Carbon Stars Have Winds? [PDF]

open access: yes, 2009
We present high resolution spectra of the five known hydrogen-deficient carbon (HdC) stars in the vicinity of the 10830 angstrom line of neutral helium. In R Coronae Borealis (RCB) stars the He I line is known to be strong and broad, often with a P Cygni
Clayton, Geoffrey C.   +2 more
core   +3 more sources

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

open access: yesFEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

CHOICE AND VALIDATION OF TEAMBUILDING MODEL OF SERVICE ORGANIZATIONS MANAGEMENT

open access: yesВестник Донского государственного технического университета, 2018
A complex of teambuilding principles for the service organizations management is offered. A model of tripartite exchange based on the innovative organizational environment is described.
Sergey V. Petrov
doaj  

A study of the Mg II 2796.34 A emission line in late--type normal, and RS CVn stars [PDF]

open access: yes, 2003
We carry out an analysis of the Mg II 2796.34 A emission line in RS CVn stars and make a comparison with the normal stars studied in a previous paper (Paper I).
Altamore, A.   +4 more
core   +2 more sources

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