Results 61 to 70 of about 28,530 (260)

3D‐Printed Dual‐Doped Ag2Se‐Based Thermoelectric Films With Enhanced Thermal Stability

Advanced Materials Technologies, EarlyView.
Sb–Se dual doping enhances the thermal stability of Ag2Se‐based thermoelectric systems. The compositionally tuned nano‐ink is printed into flexible films by direct ink writing (DIW), retaining improved thermoelectric properties after annealing up to 400°C.
Ahasun Habib Hridoy, Nishat Paul, Naimul Arefin, Axel Lopez, Peiran Wei, Brandon Dumars, Yan Chen, Mortaza Saeidi, Minxiang Zeng   +8 more
wiley   +1 more source

How a close-in planet protects its white dwarf host from pollution

Astronomy & Astrophysics
Context. Approximately 25-50% of the white dwarfs (WDs) exhibit metal absorption lines in their photospheres. The lines are attributed to accretion from their remnant planetary systems. Although WDs with detected planetary systems are more likely to show
Zhang Xin-Yue, Xie Ji-Wei, Chen Di-Chang, Zhou Ji-Lin   +3 more
doaj   +1 more source

Exoplanets: Past, Present, and Future

Galaxies, 2018
Our understanding of extra-solar planet systems is highly driven by advances in observations in the past decade. Thanks to high precision spectrographs, we are able to reveal unseen companions to stars with the radial velocity method.
Chien-Hsiu Lee
doaj   +1 more source

A Bayesian neural network predicts the dissolution of compact planetary systems. [PDF]

Proc Natl Acad Sci U S A, 2021
Cranmer M, Tamayo D, Rein H, Battaglia P, Hadden S, Armitage PJ, Ho S, Spergel DN.   +7 more
europepmc   +1 more source

Planetary Systems [PDF]

International Astronomical Union Colloquium, 1999
AbstractThe past decade brought direct evidence of the previously surmised exoplanetary systems. A variety of planetary system types exist those around pulsars, around both young and old main-sequence stars (as evidenced by planetesimal disks of the Beta Pictoris-type), and the mature giant exoplanets found in radial velocity surveys.
openaire   +1 more source

Multilayer Biobased Poly(ethylene furanoate)/Graphene Oxide Nanofibrous Membranes With Directional Water Transport for Efficient Microplastics Filtration

Advanced Materials Technologies, EarlyView.
A self‐assembled multilayer biobased PEF/GO nanofibrous membrane was developed by electrospinning for efficient PLA microplastics (MPs) filtration. The membrane combines superhydrophilicity, directional water transport, mechanical robustness, and a synergistic size‐exclusion interception and electrostatic repulsion MPs separation mechanism, enabling ...
Juraij Kandiyil, Sumayya Ansari, Prasanna Kumar S Mural, Yaser E. Greish, Adnan Younis, Akmal Nazir, Muhammad Z. Iqbal   +6 more
wiley   +1 more source

TEPCat: The Transiting Extrasolar Planet Catalogue

Universe
Transiting extrasolar planets are extraordinarily valuable for understanding the characteristics and formation of planets, because they are the only exoplanets whose physical and orbital properties can be measured to high precision.
John Southworth
doaj   +1 more source

Heavy Metal Rules. I. Exoplanet Incidence and Metallicity

Geosciences, 2019
The discovery of only a handful of exoplanets required establishing a correlation between giant planet occurrence and metallicity of their host stars.
Vardan Adibekyan
doaj   +1 more source

A Cryopreservation‐Based Supply Chain Strategy for Extrusion Bioprinting in Space

Advanced Materials Technologies, EarlyView.
Extrusion bioprinting on crewed space platforms requires a bioink that stays functional along the logistic chain. Here, cells and biomaterial ink travel separately, the cells cryopreserved and the ink cold stored, and are combined only minutes before printing.
Johannes Windisch, Max von Witzleben, Richard Frank Richter, Finn Dani, Constantin Greil, Sarah Duin, Anja Lode, Michael Gelinsky   +7 more
wiley   +1 more source

Inferring stellar metallicity and elemental abundances from kinematic and spectroscopic data using machine learning

Astronomy & Astrophysics
Context. Elemental abundances of FGK stars can be derived routinely from high-resolution optical spectra, but this remains considerably more difficult for cooler stars.
Adibekyan V., Soares B. M. T. B., Sousa S. G., Santos N. C., Delgado-Mena E., Minchev I., Chertovskih R., Martirosyan Zh., Israelian G., Hakobyan A. A.   +9 more
doaj   +1 more source