Results 71 to 80 of about 309,444 (299)

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

The Potential Role of Direct Air Capture in the German Energy Research Program—Results of a Multi-Dimensional Analysis

Energies, 2019
A significant reduction in greenhouse gas emissions will be necessary in the coming decades to enable the global community to avoid the most dangerous consequences of man-made global warming.
Peter Viebahn, Alexander Scholz, Ole Zelt   +2 more
doaj   +1 more source

Hidden sector photon cavity coupling

, 2013
Light shining through a wall microwave cavity experiments have traditionall searched for paraphotons via the transmission of power from an actively driven cavity to a passive receiver cavity, with the two cavities separated by a barrier that is impenetrable to photons.
Parker, S., Rybka, G., Tobar, M.
openaire   +2 more sources

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

The Renormalization of Non-Commutative Field Theories in the Limit of Large Non-Commutativity

, 2003
We show that renormalized non-commutative scalar field theories do not reduce to their planar sector in the limit of large non-commutativity. This follows from the fact that the RG equation of the Wilson-Polchinski type which describes the genus zero ...
Aref'eva, Armoni, Becchi, C. Becchi, C. Imbimbo, Eguchi, Griguolo, Micu, Minwalla, Polchinski, S. Giusto, Van Raamsdonk   +11 more
core   +3 more sources

Cosmic ray antihelium from a strongly coupled dark sector

Physical Review D, 2023
9 pages, 2 ...
Martin Wolfgang Winkler, Pedro De La Torre Luque, Tim Linden   +2 more
openaire   +2 more sources

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source

Estimating the seasonal performance and electricity consumption of retrofitted heat pumps

Data-Centric Engineering
Gas furnaces are the prevalent heating systems in Europe, but efforts to decarbonize the energy sector advocate for their replacement with heat pumps.
Daniel René Bayer, Marco Pruckner
doaj   +1 more source

On the growth of perturbations in interacting dark energy and dark matter fluids

, 2010
The covariant generalizations of the background dark sector coupling suggested in G. Mangano, G. Miele and V. Pettorino, Mod. Phys. Lett. A 18, 831 (2003) are considered.
A. Lewis, B.M. Jackson, C. Gordon, C. Gordon, C. Wetterich, C.-P. Ma, D.J. Holden, E. Komatsu, G. Caldera-Cabral, G. Caldera-Cabral, G. Mangano, G.R. Farrar, H. Kodama, H. Ziaeepour, I. Zlatev, J. Valiviita, J. Valiviita, J.-H. He, L. Amendola, L.P. Chimento, M. Chevallier, M. Quartin, M. Tegmark, M.B. Gavela, N. A. Koshelev, P. Astier, P.J. Steinhardt, R. Bean, S. Weinberg, T. Koivisto   +29 more
core   +1 more source

Toward Low‐Consumable Anodes: Process Simulation and Prospective Life Cycle Assessment of NiFe2O4‐NiO‐Ni‐Cu vs. Prebaked Anodes for Aluminum Production with use of Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Low‐consumable nickel ferrite‐based anodes for the Hall–Héroult process are compared with conventional prebaked carbon anodes using thermodynamic simulation and prospective life cycle assessment under contrasting future electricity system pathways from 2025 to 2050.
Felipe Alejandro Garcia Paz, Ulziikhuu Otgonbayar, Alexander Adamczyk, Farhan Hossain, Daniel Vogt, Johan Berg Pettersen, Alexandros Charitos   +6 more
wiley   +1 more source