Results 61 to 70 of about 16,863 (178)

Modelling microstructure evolution during equal channel angular pressing of magnesium alloys using cellular automata finite element method [PDF]

, 2013
Equal channel angular pressing (ECAP) is one of the most popular methods of obtaining ultrafine grained (UFG) metals. However, only relatively short billets can be processed by ECAP due to force limitation.
Gzyl, Michal Zbigniew, Milenin, Andrzej, Olejnik, Lech, Rosochowski, Andrzej   +3 more
core  

Nebular Spectra and Explosion Asymmetry of Type Ia Supernovae

, 2009
The spectral signatures of asymmetry in Type Ia Supernova (SN Ia) explosions are investigated, using a sample of late-time nebular spectra. First, a kinematical model is constructed for SN Ia 2003hv, which can account for the main features in its optical,
Axelrod, Bowers, Brachwitz, Branch, Cappellaro, Cristiani, G. Leloudas, Gerardy, Hicken, Howell, Höflich, Iwamoto, J. Sollerman, Jordan, K. Maeda, K. Motohara, K. Nomoto, Khokhlov, Kozma, Kozma, Leonard, Liu, Livne, Maeda, Maeda, Maeda, Maeda, Maeda, Maeda, Matheson, Mazzali, Meakin, Milisavljevic, Modjaz, Motohara, Niemeyer, Nomoto, Nugent, P.A. Mazzali, Perlmutter, Phillips, Riess, Röpke, Röpke, S. Taubenberger, Tanaka, Tanaka, Timmes, Turatto, Wheeler, Woosley   +50 more
core   +1 more source

Spectral analysis of the He-enriched sdO-star HD 127493

Open Astronomy, 2018
The bright sdO star HD127493 is known to be of mixed H/He composition and excellent archival spectra covering both optical and ultraviolet ranges are available.
Dorsch Matti, Latour Marilyn, Heber Ulrich   +2 more
doaj   +1 more source

Determination of the parameters of semiconducting CdF2:In with Schottky barriers from radio-frequency measurements [PDF]

, 2001
Physical properties of semiconducting CdF_2 crystals doped with In are determined from measurements of the radio-frequency response of a sample with Schottky barriers at frequencies 10 - 10^6 Hz.
A. A. Volkov, A. I. Ritus, A. I. Ryskin, A. Loidl, A. S. Shcheulin, A. Seeger, A. Suchocki, A. V. Pronin, A.I. Ryskin, A.I. Ryskin, A.R. Long, A.S. Shcheulin, A.S. Shcheulin, C.H. Park, D.J. Chadi, I. Kunze, J. Sichelschmidt, J.D. Axe, J.M. Langer, J.M. Langer, P. Lunkenheimer, P. Lunkenheimer, R. Böhmer, R.P. Khosla, R.P. Khosla, S.A. Kazanskii, S.A. Kazanskii, S.R. Elliott, Tineke Thio   +28 more
core   +1 more source

Spectroscopy of hot subdwarf binaries

Open Astronomy, 2018
We present a status report of our spectroscopic analysis of subdwarf binaries consisting of a subdwarf and a F/G/K-type main-sequence companion. These systems selected from SDSS photometry show significant excess in the (infra-)red which can not be ...
Kreuzer Simon, Irrgang Andreas, Heber Ulrich   +2 more
doaj   +1 more source

Effect of ECAP on the Microstructure and Mechanical Properties of a Rolled Mg-2Y-0.6Nd-0.6Zr Magnesium Alloy

Crystals, 2019
A fine-grained Mg-2Y-0.6Nd-0.6Zr alloy was processed by bar-rolling and equal-channel angular pressing (ECAP). The effect of ECAP on the microstructure and mechanical properties of rolled Mg-2Y-0.6Nd-0.6Zr alloy was investigated by optical microscopy ...
Xiaofang Shi, Wei Li, Weiwei Hu, Yun Tan, Zhenglai Zhang, Liang Tian   +5 more
doaj   +1 more source

The effect of compliance assistance on pollution discharges and violations of environmental regulations

Journal of Policy Analysis and Management, Volume 45, Issue 3, Summer 2026.
Abstract Researchers and policymakers assert competing behavioral models of polluters. One model portrays polluters as best approximated by the perfectly informed, rational actor from economics textbooks. Another model portrays polluters, particularly small and medium facilities, as imperfectly informed, cognitively bounded, pro‐social actors.
Paul J. Ferraro, Jay P. Shimshack
wiley   +1 more source

Strain Rate Contribution due to Dynamic Recovery of Ultrafine-Grained Cu–Zr as Evidenced by Load Reductions during Quasi-Stationary Deformation at 0.5 T_m

Metals, 2019
During quasi-stationary tensile deformation of ultrafine-grained Cu-0.2 mass%Zr at 673 K and a deformation rate of about 10−4 s−1 load changes were performed.
Wolfgang Blum, Jiři Dvořák, Petr Král, Philip Eisenlohr, Vaclav Sklenička   +4 more
doaj   +1 more source

NanoSteels (The Newest Approaches Toward the Training and Applications of Nanotechnology in Mass Production of Nanostructure Steels) [PDF]

Fanāvarī-i āmūzish, 2010
The term NanoSteels is called to some special steels consisting of nanosize phases (i.e. ferrite, cementite, and austenite), grains, and carbides (e.g. vanadium and M2C) produced by nanotechnology.
Sh. Ahmadi, H.R. Shahverdi, A. Shokouhfar   +2 more
doaj   +1 more source

Comparative analysis of tax regimes Effectiveness in oil Production

Учёт. Анализ. Аудит, 2022
The paper deals with the problems of the method of comparative analysis of the tax regimes in the field of oil production in order to create instruments for making operational decisions on its basis by oil and gas companies.
G. S. Dyachkov
doaj   +1 more source