Results 161 to 170 of about 1,989,293 (378)
Chemistry &Biodiversity, EarlyView.ABSTRACT The subfamily Gomphrenoideae is composed of about 480 accepted species, many of which have been historically used as medicinal plants, reason why they have been studied in terms of chemical profile, biological activity, and safety. This review consolidates the advances in research on this subfamily over the past 47 years, emphasizing its ...
Dayanna Isabel Araque Gelves +3 more
wiley +1 more source
A wide binary trigger for white dwarf pollution
, 2015 Metal pollution in white dwarf atmospheres is likely to be a signature of remnant planetary systems. Most explanations for this pollution predict a sharp decrease in the number of polluted systems with white dwarf cooling age. Observations do not confirm
Bonsor, Amy, Veras, Dimitri
core +1 more source
Branes constrictions with White Dwarfs [PDF]
The European Physical Journal C, 2015 7 pages, 3 figures.
openaire +3 more sources
35Cl NMR of Metal‐Organic Frameworks: What Can We Learn?
Chemistry–Methods, EarlyView.35Cl solid‐state NMR of MOFs offers insights into bonding mode and character, hydrogen bonding, phase transitions, and reaction products, even near paramagnetic centers. 35Cl NMR parameters reflect Cl coordination and local geometry. DFT methods accurately predict 35Cl NMR parameters. This 35Cl NMR/DFT approach is applicable to other MOFs and materials.
Wanli Zhang +3 more
wiley +1 more source
Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
The Astrophysical JournalWe report on the discovery of circular polarization modulated with a period of 1.943 ± 0.002 hr in the cataclysmic variable V1082 Sgr. These findings unambiguously reveal the rotation of a magnetic white dwarf and establish its intermediate polar nature.
I. J. Lima +11 more
doaj +1 more source
Asteroseismology of the ZZ Ceti and DAZ GD133
EPJ Web of Conferences, 2017 GD 133 is a DAZ white dwarf with an atmosphere polluted by heavy elements accreted from a debris disk, which is formed by the disruption of rocky planetesimals with orbits bringing them at the white dwarf tidal radius.
Fu J.-N., Vauclair G., Su J.
doaj +1 more source
A helium-burning white dwarf binary as a supersoft X-ray source. [PDF]
Nature, 2023 Greiner J +14 more
europepmc +1 more source
, 2010 White dwarfs are almost completely degenerate objects that cannot obtain energy from the thermonuclear sources and their evolution is just a gravothermal process of cooling. The simplicity of these objects, the fact that the physical inputs necessary to understand them are well identified, although not always well understood, and the impressive ...
Isern, J. +4 more
openaire +3 more sources
White dwarf dynamical interactions
, 2023 Merging white dwarfs is a promising channel to trigger Type Ia supernovae, known as the double degenerate scenario. Supernovae are stellar explosions that radiate as much energy as any ordinary star is expected to emit over its entire life span, outshining briefly the whole hosting galaxy.
openaire +4 more sources
Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT This study explores how environmental, social, and governance (ESG) performance‐based peer pressure influences corporate resilience, with a focus on the moderating effects of firm‐perceived economic policy uncertainty (FEPU) and governance efficiency (GE).
Han Lu +2 more
wiley +1 more source