Results 21 to 30 of about 123,664 (306)

Endolithic colonization of fluid inclusion trails in mineral grains [PDF]

, 2005
Many scenarios for the colonization of planetary surfaces by microbial life involve endoliths.
Baron, M., Cockell, C. S., Parnell, J.
core  

The Impact of Hot Jupiters on the Spin-down of their Host Stars [PDF]

, 2010
We present a numerical Magnetohydrodynamic (MHD) study of the dependence of stellar mass and angular momentum- loss rates on the orbital distance to close-in giant planets.
Cohen, Cohen, Cohen, Hartman, Kashyap, Mardling, Mayor, Shkolnik, Shkolnik, Shkolnik, Shkolnik, Sánchez-Lavega   +11 more
core   +1 more source

Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics

FEBS Open Bio, EarlyView.
Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini, Nicolò Antonelli, Gianluca Molla   +2 more
wiley   +1 more source

Dry Downhill Particle Motion on Mars

The Planetary Science Journal
We recently flew a new setup on parabolic flights for the first time to study particle motion on Martian slopes under Martian gravity. Here, we describe the initial experiments. We used dust/sand beds at varying ambient pressure of a few hundred pascals.
Tetyana Bila, Gerhard Wurm, Kai Stuers, Kolja Joeris, Jens Teiser   +4 more
doaj   +1 more source

Transiting Disintegrating Planetary Debris around WD 1145+017

, 2018
More than a decade after astronomers realized that disrupted planetary material likely pollutes the surfaces of many white dwarf stars, the discovery of transiting debris orbiting the white dwarf WD 1145+017 has opened the door to new explorations of ...
A. Bonsor, Andrew Vanderburg, B Croll, B Zuckerman, B Zuckerman, B. T. Gänsicke, B. T. Gänsicke, B. T. Gänsicke, B. Zuckerman, BJR Davidsson, BL Gary, C Berg, CD Murray, CD Murray, Christopher J. Manser, D. Koester, Daniel Perez-Becker, Dimitri Veras, Dimitri Veras, Dimitri Veras, Dimitri Veras, Dimitri Veras, Dimitri Veras, E. E. Becklin, G Fontaine, G. Zhou, J Farihi, J. Farihi, J. H. Debes, John H. Debes, John H. Debes, KA Holsapple, M. C. Wyatt, M. Del Santo, M. Jura, M. Jura, Matthew J. Payne, Pol Gurri, R Hyodo, R. Alonso, S Friedrich, S Rappaport, S Rappaport, S Redfield, S. Rappaport, S. Xu, S. Xu (许偲艺), Sara D. Barber, Scott J. Kenyon, Scott J. Kenyon, SJ Kenyon   +50 more
core   +1 more source

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Potential Subsurface Lava Tube Skylight on the Western Flank of Elysium Mons, Mars

The Astronomical Journal
The western flank of Elysium Mons, Mars, hosts a potential cave candidate (PCC) associated with a partially collapsed pit chain, previously identified in the Mars Cave Catalog.
Ravi Sharma, Chunyu Ding, Yan Su, Zhonghan Lei, Changzhi Jiang, Jiangwan Xu, YuXiao Zhi, Zihang Liang, Jiawei Li, Xiaohang Qiu, Haoyu Chen, S. N. A. Jaaffrey, (AAS Journals Data Editors)   +12 more
doaj   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Planetary Atmosphere and Surfaces Chamber (PASC): A Platform to Address Various Challenges in Astrobiology

Challenges, 2014
The study of planetary environments of astrobiological interest has become a major challenge. Because of the obvious technical and economical limitations on in situ planetary exploration, laboratory simulations are one of the most feasible research ...
Eva Mateo-Marti
doaj   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source