Results 61 to 70 of about 21,014 (313)

A Termite‐Inspired Alternative to Cement

Advanced Functional Materials, EarlyView.
A termite‐inspired composite of clay, cellulose, and lignin forms a dense fibrous network with concrete‐like strength (32 MPa) and superior elasticity, processed at ambient temperature. Abstract Clay combined with organic materials is used by termites as a strong and durable construction material for their mounds with minimal environmental impact. Here,
Oren Regev, Peter Fratzl, Emeline Raguin, Markus Antonietti   +3 more
wiley   +1 more source

The invasion of a free-floating planet and the number asymmetry of Jupiter Trojans [PDF]

, 2023
Jian Li, Zhihong Jeff Xia, Nikolaos Georgakarakos, Fumi Yoshida   +3 more
openalex   +1 more source

The Survival Rate of Ejected Terrestrial Planets with Moons [PDF]

, 2007
During planet formation, a gas giant will interact with smaller protoplanets that stray within its sphere of gravitational influence. We investigate the outcome of interactions between gas giants and terrestrial-sized protoplanets with lunar-sized ...
Cassen P., John H. Debes, Morbidelli A., Steinn Sigurdsson   +3 more
core   +1 more source

Gravitational Microlensing: A Tool for Detecting and Characterizing Free‐Floating Planets [PDF]

The Astrophysical Journal, 2004
total 8 pages, including 3 figures, ApJ, in press (Mar 1, 2004)
Han, Cheongho, Chung, Sun-Ju, Kim, Doeon, Park, Byeong-Gon, Ryu, Yoon-Hyun, Kang, Sangjun, Lee, Dong Wook   +6 more
openaire   +2 more sources

Stoma‐Shell Nanoarchitecture for Enhanced Plasma Confinement Catalysis in Synthesis of Ethanol from CO2

Advanced Functional Materials, EarlyView.
High‐energy electron impact in plasma catalysis often causes excessive dissociation of active intermediates, limiting C2+ product selectivity. To address this challenge, a bio‐inspired stoma‐shell nanoarchitecture is designed to decouple electron impact from catalytic reaction zones.
Nan Zou, Zhiliang Dong, Tsun‐Kong Sham, Xiaonian Li, Ying Zheng, Ting Qiu   +5 more
wiley   +1 more source

A Robust Launching Mechanism for Free- floating Planets from Host Stars with Close-in Planets

The Astrophysical Journal
Secular perturbations from binary stars and distant massive planets can drive cold planets onto nearly parabolic orbits with pericenter passages extremely close to their host stars.
Xiaochen Zheng, Zhuoya Cao, Shigeru Ida, Douglas N. C. Lin, Shude Mao   +4 more
doaj   +1 more source

Terrestrial and Neptune mass free-floating planet candidates from the MOA-II 9-year Galactic Bulge survey [PDF]

, 2023
Naoki Koshimoto, Takahiro Sumi, D. P. Bennett, V. Bozza, P. Mróz, A. Udalski, Nicholas J. Rattenbury, Fumio Abe, Richard Barry, Aparna Bhattacharya, I. A. Bond, Hirosane Fujii, Akihiko Fukui, Ryusei Hamada, Yuki Hirao, Stela Ishitani Silva, Y. Itow, Rintaro Kirikawa, Iona Kondo, Y. Matsubara, Shota Miyazaki, Y. Muraki, Greg Olmschenk, ‪Clément Ranc, Yuki Satoh, Daisuke Suzuki, Mio Tomoyoshi, P. J. Tristram, Aikaterini Vandorou, Hibiki Yama, Kansuke Yamashita   +30 more
openalex   +1 more source

A Neptune-mass Free-floating Planet Candidate Discovered by Microlensing Surveys

, 2018
Current microlensing surveys are sensitive to free-floating planets down to Earth-mass objects. All published microlensing events attributed to unbound planets were identified based on their short timescale (below two days), but lacked an angular ...
Albrow, M. D., Cha, S. -M., Chung, S. -J., Gould, A., Han, C., Hwang, K. -H., Jung, Y. K., Kim, D. -J., Kim, H. -W., Kim, S. -L., Kozlowski, S., Lee, C. -U., Lee, D. -J., Lee, Y., Mroz, Przemek, Park, B. -G., Pawlak, M., Pietrukowicz, P., Pogge, R. W., Poleski, R., Ryu, Y. -H., Shin, I. -G., Skowron, J., Soszynski, I., Szymanski, M. K., Udalski, A., Ulaczyk, K., Yee, J. C., Zhu, W.   +28 more
core   +1 more source

Ionization in atmospheres of brown dwarfs and extrasolar planets. IV. The effect of cosmic rays [PDF]

, 2013
Cosmic rays provide an important source for free electrons in Earth's atmosphere and also in dense interstellar regions where they produce a prevailing background ionization. We utilize a Monte Carlo cosmic ray transport model for particle energies of 10(
Helling, Christiane, Rimmer, Paul
core   +2 more sources

Collisions of Free-floating Planets with Evolved Stars in Globular Clusters [PDF]

The Astrophysical Journal, 2002
We estimate the rate of collisions between stars and free-floating planets (FFPs) in globular clusters, in particular the collision of FFPs with red giant branch (RGB) stars. Recent dynamical simulations imply that the density of such objects could exceed million per cubic parsec near the cores of rich globular clusters.
Soker, Noam, Rappaport, Saul, Fregeau, John   +2 more
openaire   +2 more sources