Results 41 to 50 of about 393,869 (297)

Fatigue Reliability Prediction Method of Large Aviation Planetary System Based on Hierarchical Finite Element

Metals, 2022
The reliability of planetary equipment determines the economic affordability and service safety, to a large extent, for a helicopter transmission system.
Ming Li, Yuan Luo, Liyang Xie
doaj   +1 more source

Dynamical Habitability of Planetary Systems [PDF]

Astrobiology, 2010
The problem of the stability of planetary systems, a question that concerns only multiplanetary systems that host at least two planets, is discussed. The problem of mean motion resonances is addressed prior to discussion of the dynamical structure of the more than 350 known planets.
Dvorak, Rudolf, Pilat-Lohinger, Elke, Bois, Eric, Schwarz, Richard, Funk, Barbara, Beichman, Charles, Danchi, William, Eiroa, Carlos, Fridlund, Malcolm, Henning, Thomas, Herbst, Tom, Kaltenegger, Lisa, Lammer, Helmut, Léger, Alain, Liseau, René, Lunine, Jonathan, Paresce, Francesco, Penny, Alan, Quirrenbach, Andreas, Röttgering, Huub, Selsis, Franck, Schneider, Jean, Stam, Daphne, Tinetti, Giovanna, White, Glenn J.   +24 more
openaire   +4 more sources

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

Giant Planet Companion to 2MASSW J1207334-393254

, 2005
We report new VLT/NACO imaging observations of the young, nearby brown dwarf 2MASSW J1207334-393254 and its suggested planetary mass companion (2M1207 b).
A.-M. Lagrange, B. Zuckerman, Baraffe, Baraffe, Bate, Bouy, Burgasser, Burrows, C. Dumas, Chabrier, Chauvin, Close, Close, D'Antona, D. Mouillet, Epchtein, G. Chauvin, Gizis, Gizis, Gizis, Hambly, I. Song, J.-L. Beuzit, Kroupa, Low, Mamajek, Mohanty, Mohanty, Mohanty, Monet, Neuhäuser, P. Lowrance, Pollack, Reipurth, Schneider, Scholz, Song, Sterzik, Vrba, Véran, Zuckerman   +40 more
core   +3 more sources

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source

Effect of pore structure on methane adsorption characteristics in tectonically deformed coals

Frontiers in Earth Science
The regulation of pore structure on methane adsorption and free state in tectonically deformed coals directly affects the efficiency of coalbed methane extraction and coal mine safety.
Peng Wang, Yiwen Ju, Chunhui Ren, Guofu Li, Lei Xiao, Wei Wang, Jian Gao, Renzhe Chen   +7 more
doaj   +1 more source

Equilibria in the secular, non-coplanar two-planet problem

, 2009
We investigate the secular dynamics of a planetary system composed of the parent star and two massive planets in mutually inclined orbits. The dynamics are investigated in wide ranges of semi-major axes ratios (0.1-0.667), and planetary masses ratios (0 ...
Adams, Brouwer, Brumberg, Butler, Cezary Migaszewski, Fabrycky, Ferraz-Mello, Ferrer, Fischer, Fischer, Ford, Goździewski, Goździewski, Goździewski, Goździewski, Innanen, Ji, Khalil, Kinoshita, Kozai, Krasinsky, Krzysztof Goździewski, Laskar, Laskar, Lee, Libert, Libert, Libert, Lidov, Lidov, Markeev, Meyer, Michtchenko, Michtchenko, Michtchenko, Migaszewski, Migaszewski, Migaszewski, Miller, Morbidelli, Murray, Press, Rodríguez, Sokolskii, Thomas, Thommes, Veras, Veras, Wright   +48 more
core   +1 more source

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

Ringed versus Ringless Worlds: How Poynting–Robertson Drag Shapes Rings across the Solar System

The Astrophysical Journal Letters
Planetary rings are not only ubiquitous around the giant planets in the outer solar system, but have also been discovered around several small distant bodies. In contrast, no rings have been observed around any inner solar system objects.
Ryuki Hyodo, Shigeru Ida
doaj   +1 more source

Planetary justice: Prioritizing the poor in earth system governance

Earth System Governance, 2020
We are in the middle of a planetary crisis that urgently requires stronger modes of earth system governance. At the same time, calls for justice are becoming increasingly pronounced in sustainability research: there can be no effective planetary ...
Prakash Kashwan, Frank Biermann, Aarti Gupta, Chukwumerije Okereke   +3 more
doaj   +1 more source