Results 101 to 110 of about 390,476 (288)

Excitation and abundance of C_3 in star forming cores: Herschel/HIFI observations of the sight-lines to W31C and W49N [PDF]

, 2010
We present spectrally resolved observations of triatomic carbon (C_3) in several ro-vibrational transitions between the vibrational ground state and the low-energy ν_2 bending mode at frequencies between 1654−1897 GHz along the sight-lines to the ...
Bell, T. A., Lis, D. C., Monje, R., Mookerjea, B., Morris, P., Phillips, T. G., Zmuidzinas, J.   +6 more
core  

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Seismic Hazard Assessment for the Tianshui Urban Area, Gansu Province, China

International Journal of Geophysics, 2012
A scenario seismic hazard analysis was performed for the city of Tianshui. The scenario hazard analysis utilized the best available geologic and seismological information as well as composite source model (i.e., ground motion simulation) to derive ground
Zhenming Wang, David T. Butler, Edward W. Woolery, Lanmin Wang   +3 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Characteristics of the strong ground motion from the 24th August 2016 Amatrice earthquake

Annals of Geophysics, 2016
The 2016 August 24 Amatrice earthquake occurred at 03:36 local time in central Apennines Italy with an epicentre at 43.36°E, 38.76°N, Istituto Nazionale di Geofisica e Vulcanologia (INGV), few kilometers north of the city of Amatrice.
Marta Pischiutta, Aybige Akinci, Luca Malagnini, André Herrero   +3 more
doaj   +1 more source

A simple, analytic 3-dimensional downburst model based on boundary layer stagnation flow [PDF]

A simple downburst model is developed for use in batch and real-time piloted simulation studies of guidance strategies for terminal area transport aircraft operations in wind shear conditions.
Bowles, Roland L., Oseguera, Rosa M.
core   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Many Body Theory of Charge Transfer in Hyperthermal Atomic Scattering

, 1992
We use the Newns-Anderson Hamiltonian to describe many-body electronic processes that occur when hyperthermal alkali atoms scatter off metallic surfaces. Following Brako and Newns, we expand the electronic many-body wavefunction in the number of particle-
A. G. Borisov, A. J. Algra, B. H. Cooper, B. Hird, B. Rasser, C. A. DiRubio, C. A. DiRubio, C. C. Hsu, C. Kane, C. Langreth, C. Langreth, C. M. Varma, C. Richardson, D. L. Adler, D. M. Goodstein, D. R. Andersson, D. V. Averin, E. C. Goldberg, E. R. Behringer, E. R. Behringer, G. A. Kimmel, G. A. Kimmel, H. Brenten, H. Brenten, H. Kasai, H. Nakanishi, H. Schall, H. Schall, J. B. Marston, J. Hermann, J. J. C. Geerlings, J. J. C. Geerlings, J. J. C. Geerlings, J. Los, K. L. Sebastian, K. W. Sulston, K. W. Sulston, M. J. Ashwin, M. L. Yu, N. Andrei, N. Andrei, N. Lorente, O. Gunnarsson, P. B. Wiegmann, P. Nordlander, P. Nordlander, P. Nordlander, P. Nordlander, P. O. Gartland, P. O. Gartland, R. Brako, R. Brako, R. Brako, R. L. McEachern, R. Zimny, R. Zimny, T. Dorsey, Tony Fónden, X. Nakanishi, X. Nakanishi, Y. Bu   +60 more
core   +2 more sources

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann, Armin Piwek, Julius Peddinghaus, Kai Brunotte, Bernd-Arno Behrens   +4 more
wiley   +1 more source

Investigation of Ground Vibration of Full-Stone Foundation under Dynamic Compaction

Shock and Vibration, 2019
This study focuses on the ground vibration of a full-stone foundation treatment project. The single-point dynamic compaction test was performed using a tamping machine at an energy level of 3200 kN·m. Time-history curves of ground vibration velocity were
Jiawen Wu, Linjian Ma, Jun Shi, Yangyang Sun, Jiewei Ke, Dan Wang   +5 more
doaj   +1 more source