Results 71 to 80 of about 903,347 (269)

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Observation of eta(c) -> omega omega in J/psi -> gamma omega omega

, 2023
Using a sample of (1310.6 +/- 7.0) x 10(6) J/psi events recorded with the Beijing Spectrometer III detector at the Beijing Electron Positron Collider II, we report the observation of the decay of the (1(1)S(0)) charmonium state eta(c) into a pair of omega mesons in the process J/psi -> gamma omega omega. The branching fraction is measured for the first
BESIII Collaboration, Kolcu, Onur Bugra
openaire   +2 more sources

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

Advanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin, Marvin Erck, Kevin Jasutyn, Katja Radermacher, Andreas Bund, Mario Kurniawan   +5 more
wiley   +1 more source

La crux gemmata de la basílica de San Filóxeno de Oxirrinco (El-Bahnasa, Egipto)

Imafronte
El artículo se centra en el estudio de una crux gemmata descubierta en la basílica de San Filóxeno en Oxirrinco (Egipto), explorando su contexto histórico, significado simbólico e iconografía.
José Javier Martínez García, Adriana Recasens Escardó   +1 more
doaj   +1 more source

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

Advanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller, Florian Kerber, Kirsten Moritz, Steffen Dudczig, Konstantin Kraushaar, Thomas Schemmel, Jana Hubálková, Patrick Gehre, Christos G. Aneziris   +8 more
wiley   +1 more source

Impurity profiling and in-process testing of drugs for injection by fast liquid chromatography

Journal of Pharmaceutical Analysis, 2012
Liquid chromatography (LC) is considered by many as a mature technique. Nonetheless, LC technology continues to evolve driven by the need for high-throughput and high-resolution analyses. Over the past several years, small particle size packing materials
Marie-Josée Rocheleau, Elaine Larouche, Cristina Salamu, Mihaela Curca   +3 more
doaj   +1 more source

Deterministic Detection of Single Ion Implantation

Advanced Engineering Materials, EarlyView.
Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead, Lok Kan Wan, Maddison Coke, Janet Jacobs, Nicholas F. L. Collins, Mark C. Rosamond, Richard J. Curry   +6 more
wiley   +1 more source

Ácidos grasos y trastorno de déficit de atención e hiperactividad

Revista Discapacidad, Clínica, Neurociencias
El Trastorno por Déficit de Atención e Hiperactividad (TDAH) es un trastorno neuropsiquiátrico común que afecta tanto a niños como adultos, caracterizado por inatención, hiperactividad e impulsividad. En la actualidad, la etiología es desconocida.
Nuria Alacid-Cutillas, Antonia Sánchez-Jorquera, José Manuel Veiga-del-Baño, Pedro Andreo-Martínez   +3 more
doaj   +1 more source

Synoptic Analysis of Heavy Rainfall Caused by Scut-Off Low in Bazoft Basin (Case study: Precipitation during March 8-13, 2010) [PDF]

محیط زیست و مهندسی آب, 2016
The specific nature of heavy precipitation and its consequences have caused the phenomenon of particular importance in environmental planning and management of water.
Hossein Asakereh, Nargas Hesami, Zainnab Shahmohammadi   +2 more
doaj