Results 91 to 100 of about 1,679,257 (316)

Testing Magnetic Field Models for the Class 0 Protostar L1527

, 2014
For the Class 0 protostar, L1527, we compare 131 polarization vectors from SCUPOL/JCMT, SHARP/CSO and TADPOL/CARMA observations with the corresponding model polarization vectors of four ideal-MHD, non-turbulent, cloud core collapse models.
Chapman, N. L., Crutcher, R. M., Davidson, J. A., Hull, C. L. H., Jones, T. J., Kwon, W., Li, Z. -Y., Looney, L. W., Matthews, B. C., Novak, G., Plambeck, R. L., Stephens, I. W., Tobin, J. J.   +12 more
core   +1 more source

Geometric Optimization and Mechanical Performance Enhancement of Auxetic Structures for High‐Impact Applications Through Fused Deposition Modeling

Advanced Engineering Materials, EarlyView.
This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan, Manjusri Misra, Alexander Bardelcik, Stefano Gregori, Amar K. Mohanty   +4 more
wiley   +1 more source

Post-collapse dynamics of self-gravitating Brownian particles in D dimensions

, 2004
We address the post-collapse dynamics of a self-gravitating gas of Brownian particles in D dimensions, in both canonical and microcanonical ensembles. In the canonical ensemble, the post-collapse evolution is marked by the formation of a Dirac peak with ...
C. Lancellotti, Clément Sire, D. Lynden-Bell, D. Lynden-Bell, E. Keller, H. Risken, J. Binney, J. D. Murray, M. Hénon, M. Kiessling, M. V. Penston, N. G. van Kampen, N. Martzel, P. H. Chavanis, P. H. Chavanis, Pierre-Henri Chavanis, R. B. Larson, V. A. Antonov, W. Jäger   +18 more
core   +1 more source

Progressive Collapse

Canadian Journal of Civil Engineering, 1975
This paper explains the nature of progressive collapse, with examples, and enlarges considerably on commentary C, supplement No. 4 of the 1975 National Building Code of Canada. Attendant philosophical problems related to code coverage and the design for progressive collapse are considered in discussions of risk, abnormal events that might initiate ...
openaire   +2 more sources

X‐Ray Tomography Analysis of Damage Mechanisms in Metal Matrix Syntactic Foams During Compression

Advanced Engineering Materials, EarlyView.
In situ synchrotron X‐ray tomography is used to investigate the internal damage mechanisms of AlSi12 metal matrix syntactic foam with ceramic hollow spheres during compressive loading. It is concluded that a homogeneous distribution of the second‐phase filler material results in a sequential collapse in a localized region; this leads to controlled and ...
Indrajeet Tambe, János Endre Maróti, Imre Norbert Orbulov, Zoltan Hegedűs, Markus Ziehmer, Carl E. Krill III, Håkan Hallberg, Pär A. T. Olsson, Johan Hektor   +8 more
wiley   +1 more source

The formation of CDM haloes I: Collapse thresholds and the ellipsoidal collapse model

, 2014
In the excursion set approach to structure formation initially spherical regions of the linear density field collapse to form haloes of mass $M$ at redshift $z_{\rm id}$ if their linearly extrapolated density contrast, averaged on that scale, exceeds ...
Aaron D. Ludlow, Angrick, Bailin, Bardeen, Behroozi, Bett, Bond, Bond, Catelan, Catelan, Chandrasekhar, Cole, Cristiano Porciani, Dalal, Despali, Despali, Doroshkevich, Eisenstein, Eke, Elia, Hahn, Hahn, Heavens, Icke, Kauffmann, Kellogg, Komatsu, Lacey, Lee, Lemson, Li, Lin, Ludlow, Ludlow, Lynden-Bell, Mikolaj Borzyszkowski, Mo, Mo, Peebles, Pillepich, Porciani, Porciani, Press, Robertson, Sheth, Sheth, Sheth, Sheth, van den Bosch, Wang, Watanabe, White, White   +52 more
core   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Collapse and Reorganization in Social-Ecological Systems: Questions, Some Ideas, and Policy Implications

Ecology and Society, 2006
We tested the explanatory usefulness and policy relevance of Holling's (2001) "adaptive cycle" theory in exploring processes of "collapse," also called "release," and recovery in regional social-ecological systems (SESs) in Zimbabwe and Australia.
Nick Abel, David H. M. Cumming, John M. Anderies   +2 more
doaj   +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

A Method for the Definition of Emergency Rescue Routes Based on the Out-of-Plane Seismic Collapse of Masonry Infills in Reinforced-Concrete-Framed Buildings [PDF]

, 2022
Mauro Francini, Sara Gaudio, Carolina Salvo, Fabio Mazza, Angelo Donnici   +4 more
openalex   +1 more source