Results 151 to 160 of about 1,914,179 (372)
Battery Energy, EarlyView.We present an economically viable approach for synthesizing carbon nanomaterials derived from discarded cigarette filters, an abundant environmental pollutant. The resulting material exhibits desirable characteristics, including a well‐defined stacking structure, high porosity, and a substantial specific surface area, making it suitable as an active ...
Akash Sivanandan +5 more
wiley +1 more source
White dwarfs with a surface electrical charge distribution: equilibrium and stability
European Physical Journal C: Particles and Fields, 2018 The equilibrium configuration and the radial stability of white dwarfs composed of charged perfect fluid are investigated. These cases are analyzed through the results obtained from the solution of the hydrostatic equilibrium equation. We regard that the
G. A. Carvalho +3 more
doaj +1 more source
DB white dwarfs in the Sloan Digital Sky Survey Data Release 10 and 12 [PDF]
, 2015 White dwarfs with helium-dominated atmospheres comprise approximately 20% of all white dwarfs. Among the open questions are the total masses and the origin of the hydrogen traces observed in a large number and the nature of the deficit of DBs in the ...
D. Koester, S. O. Kepler
semanticscholar +1 more source
White-dwarf asteroseismology: An update [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractThe vast majority of stars that populate the Universe will end their evolution as white-dwarf stars. Applications of white dwarfs include cosmochronology, evolution of planetary systems, and also as laboratories to study non-standard physics and crystallization. In addition to the knowledge of their surface properties from spectroscopy combined
openaire +4 more sources
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
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
Effects of modified gravity on microscopic properties and cooling timescale of white dwarfs
Physics Letters BThere are currently two open questions in white dwarf physics: why are massive dwarfs observed less often in astronomical surveys, and why have not any super-Chandrasekhar white dwarfs been found despite the discovery of more than a dozen peculiar ...
Aneta Wojnar +2 more
doaj
Five New Sirius-like White Dwarf–Main-sequence Star Systems with MagAO-X
The Astronomical JournalMost known white dwarfs in multiple systems with main-sequence stars have been discovered with M-type companions, because the white dwarf causes detectable UV excess and bluer colors than expected from a single M star.
Logan A. Pearce +22 more
doaj +1 more source
Existence of Chandrasekhar's limit in generalized uncertainty white dwarfs. [PDF]
R Soc Open Sci, 2021 Mathew A, Nandy MK.
europepmc +1 more source