Results 91 to 100 of about 411,959 (304)

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

PMAS Optical Integral Field Spectroscopy of Luminous Infrared Galaxies. II.-- Spatially resolved stellar populations and excitation conditions

, 2010
The general properties of luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) in the local universe are well known since large samples of these objects have been the subject of numerous spectroscopic works.
A. Alonso-Herrero, A. Monreal-Ibero, Allen, Alloin, Alonso-Herrero, Alonso-Herrero, Alonso-Herrero, Alonso-Herrero, Armus, Arribas, Arribas, Arribas, Asplund, Baldwin, Balogh, Bedregal, Bingham, Blanc, Bruzual, Bushouse, Calzetti, Calzetti, Calzetti, Caputi, Chen, Cid Fernandes, Colina, Colina, Cox, Davies, Delgado, Dopita, Díaz-Santos, Gallazzi, Gao, García-Lorenzo, García-Marín, García-Marín, García-Marín, Goldader, González Delgado, Graciá-Carpio, Graciá-Carpio, Haffner, Hammer, Heckman, Heckman, Hummer, J. Rodríguez Zaurín, Kauffmann, Kauffmann, Kauffmann, Keel, Kehrig, Kennicutt, Kennicutt, Kewley, Kewley, Kim, Kim, L. Colina, Le Fèvre, Lehnert, Leitherer, Lípari, Lípari, M. García-Marín, Madsen, Marcillac, Miller, Monreal-Ibero, Monreal-Ibero, Monreal-Ibero, Moustakas, Moustakas, Oey, Pereira-Santaella, Pettini, Poggianti, Rand, Relaño, Reunanen, Reunanen, Rigopoulou, Robinson, Rodríguez Zaurín, Rodríguez Zaurín, Roth, Rupke, S. Arribas, Salpeter, Sanders, Sanders, Sanders, Sanders, Sarzi, Scoville, Smith, Stoklasová, Tadhunter, Thilker, Veilleux, Veilleux, Veilleux, Veilleux, Vázquez, Wang, Wang, Wood, Worthey, Wu, Yuan, Zurita   +112 more
core   +1 more source

Mid-infrared and optical spectroscopy of ultraluminous infrared galaxies: A comparison [PDF]

, 1999
New tools from Infrared Space Observatory (ISO) mid-infrared spectroscopy have recently become available to determine the power sources of dust-obscured ultraluminous infrared galaxies (ULIRGs).
Aussel H., Bergeron J., D. Lutz, Moorwood A. F. M., R. Genzel, Robinson A., S. Veilleux, Sanders D. B., Taniguchi Y., Young S.   +9 more
core   +2 more sources

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Tailoring the structural and non-linear optical properties of TiO2 nanoparticles via solvent-directed green synthesis

Discover Materials
The development of materials with tunable structural and optical properties stands at the forefront of contemporary scientific research, given their broad applicability.
Prakash Nandi, Dimishree Neog, Rajib Biswas, Nirmal Mazumder   +3 more
doaj   +1 more source

Optical integral field spectroscopy of the extended line emission around six radio-loud quasars

, 1999
We present integral field spectroscopy of a small sample of radio-loud quasars at intermediate redshift (0 ...
Crawford, C. S., Vanderriest, C.
core   +1 more source

Variability of the coronal line region in NGC 4151 [PDF]

, 2015
We present the first extensive study of the coronal line variability in an active galaxy. Our data set for the nearby source NGC 4151 consists of six epochs of quasi-simultaneous optical and near-infrared spectroscopy spanning a period of about eight ...
Ferland, Gary J., Landt, Hermine, Steenbrugge, Katrien C., Ward, Martin J.   +3 more
core   +5 more sources

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Optical spectroscopy of IRAS sources with infrared emission bands. 1: IRAS 21282+5050 and the diffuse interstellar bands [PDF]

Spectroscopy of the starlike optical counterpart to IRAS 21282+5050, a source with the hydrocarbon infrared emission band spectrum, shows an 07(f)-(WC11) planetary nebula nucleus suffering an extinction of 5.7 mag. Emission line widths in the WC spectrum
Cohen, Martin, Jones, B. F.
core   +1 more source

VLT spectroscopy and non-LTE modeling of the C/O-dominated accretion disks in two ultracompact X-ray binaries

, 2006
We present new medium-resolution high-S/N optical spectra of the ultracompact low-mass X-ray binaries 4U0614+091 and 4U1626-67, taken with the ESO Very Large Telescope.
Bildsten, Cowley, Dreizler, Hernanz, Homer, In T'Zand, Isern, Jonker, Juett, Juett, Juett, K. Werner, N. J. Hammer, Nagel, Nelemans, Nelemans, Ritter, S. Dreizler, Schulz, Seaton, Shakura, Strohmayer, T. Nagel, T. Rauch, Wang, Yungelson   +25 more
core   +1 more source