Results 111 to 120 of about 264,692 (309)

Vertical Elastic Acceleration Response Spectra for Vrancea Intermediate-Depth Earthquakes

Buildings
This study is focused on the evaluation of vertical elastic acceleration response spectra for Vrancea intermediate-depth earthquakes in Romania in the context of the ongoing update of the national seismic design code.
Florin Pavel, Radu Vacareanu, Alexandru Aldea, Cristian Arion   +3 more
doaj   +1 more source

Double Coronal Hard and Soft X-ray Source Observed by RHESSI: Evidence for Magnetic Reconnection and Particle Acceleration in Solar Flares

, 2007
We present data analysis and interpretation of an M1.4-class flare observed with the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) on April 30, 2002.
Dennis, Brian R., Jiang, Yan Wei, Liu, Wei, Petrosian, Vahe'   +3 more
core   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Analysis of spectrum characteristics for multi-attribute seismic data from shaking table test of tunnel underpass hauling sliding surface

Rock Mechanics Bulletin
The objective of this research is to analyze the deformation characteristics in space and the dynamic reaction of tunnel underpass hauling sliding surfaces when subjected to potential seismic activities.
Lifang Pai, Honggang Wu, Zhongqiang Yi
doaj   +1 more source

Seeing Tree Structure from Vibration

, 2018
Humans recognize object structure from both their appearance and motion; often, motion helps to resolve ambiguities in object structure that arise when we observe object appearance only.
A French, AD Jepson, B Bascle, B Zhou, DC Knill, DJ Fleet, DM Blei, E Türetken, E Türetken, ES Spelke, EW Dijkstra, HY Wu, J Canny, JF Henriques, JR Moore, K-K Maninis, KD Murphy, KR James, KR James, LA Miller, MM Fraz, MN Davies, N Wiener, O Braddick, R Moreno-Bote, S Geman, S Hare, SJ Farlow, SJ Gershman, T Furoh, T Gautama, T Xue, TC Lee, TS Lee   +33 more
core   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

Margin of seimic design for mechanical structures with gaps through experimental investigation

Nihon Kikai Gakkai ronbunshu
Seismic design for equipment and piping systems typically conducts linear evaluations using maximum response accelerations or response spectra of structures. However, gaps exist between structures and support structures in these systems, which can affect
Yusuke MINAKAWA, Tadashi IIJIMA, Naotomo MARUYAMA   +2 more
doaj   +1 more source

User Guide for AutoCSM: Automated Capacity Spectrum Method of Analysis [PDF]

, 2004
No Abstract ...
Guyader, Andrew, Iwan, Wilfred D.
core  

Causal particle detectors and topology

, 2005
We investigate particle detector responses in some topologically non-trivial spacetimes. We extend a recently proposed regularization of the massless scalar field Wightman function in 4-dimensional Minkowski space to arbitrary dimension, to the massive ...
Abramowitz, Allen, Anderson, Banach, Banach, Birrell, Chamblin, Chen, Davies, Davies, Davies, Deser, Deser, Deser, DeWitt, Fewster, Fewster, Fewster, Ford, Ford, Ford, Ford, Fronsdal, Garfinkle, Geroch, Goenner, Gradshteyn, Hawking, Higuchi, Hong, Hong, Hong, Hong, Kim, Langlois, Langlois, Louko, Louko, McInnes, Misner, Paul Langlois, Pfenning, Pfenning, Santos, Schleich, Schleich, Schlicht, Sriramkumar, Sriramkumar, Suzuki, Svaiter, Svaiter, Takagi, Unruh, Vilenkin, Zwillinger   +55 more
core   +2 more sources