Results 131 to 140 of about 112,298 (365)

GD1212: Probing deep into the interior of a pulsating white dwarf star

EPJ Web of Conferences, 2015
We present the first self-consistent seismic analysis of a white dwarf star, GD 1212, in the Kepler2 field. We precisely establish the fundamental parameters of the star using the forward method based on physically sound models.
Giammichele N., Fontaine G., Charpinet S., Brassard P., Greiss S.   +4 more
doaj   +1 more source

Ethnomedicinal Uses, Phytochemistry, Pharmacological Activities, and Toxicology of the Subfamily Gomphrenoideae (Amaranthaceae): A Comprehensive Review

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, Giulia Cristina de Andreoli Souza, Alvaro Jose Hernandez Tasco, Marcos José Salvador   +3 more
wiley   +1 more source

Wide Binaries with White Dwarf or Neutron Star Companions Discovered from Gaia DR3 and LAMOST

The Astrophysical Journal
The Gaia Data Release 3 (DR3) mission has identified and provided about 440,000 binary systems with orbital solutions, offering a valuable resource for searching binaries including a compact component.
Xinlin Zhao, Huijun Mu, Song Wang, Xue Li, Junhui Liu, Bowen Huang, Weimin Gu, Junfeng Wang, Tuan Yi, Zhixiang Zhang, Haibo Yuan, Zhongrui Bai, Hailong Yuan, Haotong Zhang, Jifeng Liu   +14 more
doaj   +1 more source

Evolution of a 3 \msun star from the main sequence to the ZZ Ceti stage: the role played by element diffusion

, 2001
The purpose of this paper is to present new full evolutionary calculations for DA white dwarf stars with the major aim of providing a physically sound reference frame for exploring the pulsation properties of the resulting models in future communications.
A. H. Córsico, A. M. Serenelli, Alexander, Althaus, Althaus, Althaus, Althaus, Anders, Angulo, Benvenuto, Blöcker, Blöcker, Bradley, Bradley, Bradley, Bradley, Brassard, Brassard, Brassard, Brickhill, Brown, Burgers, Böhm-Vitense, Caughlan, Cox, Córsico, D'Antona, Dehner, Dolez, Gautschy, Gautschy, Gautschy, Goldreich, Graboske, Hine, Hubbard, Iben, Iben, Iben, Iben, Iben, Iben, Iglesias, Itoh, Kawaler, Kawaler, Kaye, Kilkenny, Kippenhahn, L. G. Althaus, MacDonald, Magni, Mazzitelli, Montgomery, O. G. Benvenuto, Salaris, Schönberner, Tassoul, Unglaub, Unno, Vassiliadis, Wallace, Winget, Winget, Wood   +64 more
core   +1 more source

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, Bryan E. G. Lucier, Mathew J. Willans, Yining Huang   +3 more
wiley   +1 more source

The DB gap and a new class of pulsating white dwarfs

EPJ Web of Conferences, 2013
The recent systematic surveys providing enormously massive datasets of white dwarfs show that there is still a deficit of a factor of 2.5 in the DA/non-DA ratio within the temperature range of 30 000 K < Teff < 45 000 K, which has been regarded as the ...
Shibahashi H.
doaj   +1 more source

How Sublimation Delays the Onset of Dusty Debris Disk Formation Around White Dwarf Stars. [PDF]

Astrophys J Lett, 2021
Steckloff JK, Debes J, Steele A, Johnson B, Adams ER, Jacobson SA, Springmann A.   +6 more
europepmc   +1 more source

The Dynamics of ESG Peer Pressure and Corporate Resilience: Examining Through Firm‐Perceived EPU and Governance Efficiency Perspectives

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, Sultan Sikandar Mirza, Chengming Huang   +2 more
wiley   +1 more source

Uncovering ESG Ratings: The (Im)Balance of Aspirational and Performance Features

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Environmental, Social, and Governance (ESG) scores are crucial for evaluating corporate sustainability. However, the undisclosed and complex methodologies used by rating agencies have raised concerns about their reliability and consistency. This study replicates LSEG's ESG scoring methodology using machine learning to shed light on the key ...
Andrea Ferro, Daniele Marazzina, Davide Stocco   +2 more
wiley   +1 more source

Machine Learning a Predictive Tool for the Analysis of NiCo2S4/Graphene Composites for Supercapacitor

ChemSusChem, EarlyView.
The present review explores the recent advancements of NiCo2S4/graphene nanocomposite as a promising active material for supercapacitors. Machine learning models are demonstrated to analyze the specific capacitance variation with respect to different synthesis parameters, morphology, energy density, and power density.
Heena S. Mulla, Digambar S. Sawant, Sandesh V. Gaikwad, Akash V. Fulari, Rajesh K. Nimat, Deepak P. Dubal, Gaurav M. Lohar   +6 more
wiley   +1 more source