Results 51 to 60 of about 543,793 (292)

The composition and size distribution of the dust in the coma of comet Hale-Bopp

, 2005
We discuss the composition and size distribution of the dust in the coma of comet Hale-Bopp. We do this by fitting simultaneously the infrared emission spectrum measured by the infrared space observatory (ISO) and the measured degree of linear ...
de Koter, A., Dominik, C., Hovenier, J. W., Min, M., Waters, L. B. F. M.   +4 more
core   +1 more source

Characterization of a calcium phospho-silicated apatite with iron oxide inclusions [PDF]

, 2011
An iron oxide containing calcium phosphate–silicate hydroxyapatite was synthesized by calcination at 900 °C of a sample obtained by precipitation in basic aqueous solution of Ca, P, Si, Fe and Mg containing acidic solution made from dissolution of ...
Borschneck, Daniel, Carpena, Joëlle, Desport, Barthélémy, Gattacceca, Jérôme, Lacout, Jean-Louis   +4 more
core   +3 more sources

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

A review on multicomponent rare earth silicate environmental barrier coatings

Journal of Materials Research and Technology
Rare earth (RE) silicate environmental barrier coatings (EBCs), with superior physicochemical properties and resistance to hot water-oxygen and calcium-magnesium-aluminosilicate (CMAS) corrosion, are ideal candidates for safeguarding the next-generation ...
Bin Qian, Yu Wang, Jiahao Zu, Keyuan Xu, Qingyuan Shang, Yu Bai   +5 more
doaj   +1 more source

Corrosion resistant thermal barrier coating [PDF]

, 1981
A thermal barrier coating system for protecting metal surfaces at high temperature in normally corrosive environments is described. The thermal barrier coating system includes a metal alloy bond coating, the alloy containing nickel, cobalt, iron, or a ...
Hodge, P. E., Levine, S. R., Miller, R. A.   +2 more
core   +1 more source

Influence of temperature and time on the Eu3+ reaction with synthetic Na-Mica-n (n = 2 and 4) [PDF]

, 2016
Bentonite is accepted as the best clay material for the engineered barrier of Deep Geological Repositories (DGRs). The performance of clay as the main component of the engineered barrier in the DGR has been intensively studied and the structure of the ...
Alba Carranza, María Dolores, Cota, Agustín, García Jiménez, María José, Osuna, Francisco J., Pavón González, Esperanza   +4 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

W Hya : molecular inventory by ISO-SWS [PDF]

, 2004
Infrared spectroscopy is a powerful tool to probe the inventory of solid state and molecular species in circumstellar ejecta. Here we analyse the infrared spectrum of the Asymptotic Giant Branch star W Hya, obtained by the Short and Long Wavelength ...
A. G. G. M. Tielens, Anders, Banks, Bedijn, Begemann, Bujarrabal, Cami, Cernicharo, Chapman, Clark, Clegg, de Graauw, Draine, Gilman, Goldreich, Groenewegen, H. Feuchtgruber, Haisch, Harwit, Hawkins, Hinkle, Justtanont, Justtanont, Justtanont, K. Justtanont, Kessler, Knapp, Kozasa, L. B. F. M. Waters, Lane, Laor, Le Floch, Lebzelter, Loidl, Markwick, Mathis, Nercessian, Neufeld, Olofsson, Onaka, Posch, Reid, Rothman, Ryde, Schwartz, Skinner, Sloan, Speck, Spencer, Stencel, Szymczak, T. de Jong, Toon, Tsuji, Wannier, Willacy, Wilson, Yamamura, Zubko   +58 more
core   +2 more sources

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

Advanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou   +6 more
wiley   +1 more source

Powders Synthesized from Water Solutions of Sodium Silicate and Calcium and/or Magnesium Chlorides

Compounds
Powders with phase composition including quasi-amorphous phases and calcium carbonate CaCO3 in the form of calcite or aragonite and sodium halite NaCl as a reaction by-product were synthesized from 0.5M aqua solutions of sodium silicate and 0.5M aqua ...
Tatiana V. Safronova, Alexandra S. Sultanovskaya, Sergei A. Savelev, Tatiana B. Shatalova, Yaroslav Y. Filippov, Olga V. Boytsova, Vadim B. Platonov, Tatiana V. Filippova, Albina M. Murashko, Xinyan Feng, Muslim R. Akhmedov   +10 more
doaj   +1 more source