Results 21 to 30 of about 29,742 (296)

Photoemission study of the SiO₂conversion mechanism to magnesium silicate [PDF]

, 2010
The objective of this work is to investigate interface chemistries which minimize the interfacial silicon oxide transition region at Si/high-k dielectric interfaces.
Casey, Patrick, Hughes, Greg
core   +1 more source

New insights into the dust formation of oxygen-rich AGB stars [PDF]

, 2013
We observed the AGB stars S Ori, GX Mon and R Cnc with the MIDI instrument at the VLTI. We compared the data to radiative transfer models of the dust shells, where the central stellar intensity profiles were described by dust-free dynamic model ...
Boboltz, D. A., Fossat, E., Karovicova, I., Ohnaka, K., Scholz, M., Wittkowski, M.   +5 more
core   +2 more sources

Tribocorrosion Properties of PEO Coatings Produced on AZ91 Magnesium Alloy with Silicate- or Phosphate-Based Electrolytes [PDF]

, 2018
In this work, the tribocorrosion behavior of plasma electrolytic oxidation (PEO)-coated AZ91 samples was studied. In particular, two different coatings were produced and compared. One was obtained with an alkaline electrolyte containing sodium phosphate,
Brunelli, Katya, Dabala', Manuele, Gennari, Claudio, Marco, Sinico, Pezzato, Luca, Pietro, Pranovi, Settimi, ALESSIO GIORGIO, Vranescu, Dragos   +7 more
core   +2 more sources

Synthesis of magnesium silicate from wheat husk ash: Effects of parameters on structural and surface properties [PDF]

BioResources, 2012
In the present study, magnesium silicate was produced by using wheat husk ash. Wheat husk was burned at 600 °C to obtain an amorphous ash structure, and the ash was processed with sodium hydroxide solution with heat to extract silica.
Pinar Terzioglu, Sevil Yucel
doaj  

Silicate fertilizer and irrigation depth in corn production

Revista Ceres, 2013
Calcium-magnesium silicates improve the soil physicochemical properties and provide benefits to plant nutrition, since they are sources of silica, calcium and magnesium.
Edvaldo Eloy Dantas Júnior, Lucia Helena Garófala Chaves, Fernando Antônio Melo da Costa, Hans Raj Gheyi   +3 more
doaj   +1 more source

The Detection of Crystalline Silicates in Ultra-Luminous Infrared Galaxies

, 2005
Silicates are an important component of interstellar dust and the structure of these grains -- amorphous versus crystalline -- is sensitive to the local physical conditions.
A. G. G. M. Tielens, B. Sargent, B. T. Soifer, Clavel J., Dorschner J., G. C. Sloan, H. W. W. Spoon, J. Cami, J. R. Houck, L. Armus, Lahuis F., Laurent O., Malfait K., Molster F., Rotundi A., Sylvester R. J., V. Charmandaris, Voors R. H. M., Voors R. H. M.   +18 more
core   +2 more sources

Stellar dust production and composition in the Magellanic Clouds [PDF]

, 2012
The dust reservoir in the interstellar medium of a galaxy is constantly being replenished by dust formed in the stellar winds of evolved stars. Due to their vicinity, nearby irregular dwarf galaxies the Magellanic Clouds provide an opportunity to obtain ...
Kemper, F.
core   +2 more sources

Discovery of stars surrounded by iron dust in the LMC

, 2019
We consider a small sample of oxygen-rich, asymptotic giant branch stars in the Large Magellanic Cloud, observed by the Spitzer Space Telescope, exhibiting a peculiar spectral energy distribution, which can be hardly explained by the common assumption ...
Dell'Agli, F., Di Criscienzo, M., García-Hernández, D. A., Marini, E., Mattsson, L., Puccetti, S., Ventura, P.   +6 more
core   +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
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Selective enrichment of Ti element and phase transformation of MgAl2O4 in titanium-containing electric furnace molten slag during the alkali fusion process

工程科学学报, 2015
Using potassium hydroxide as a modifier, Ti element was selectively enriched in potassium metatitanate from titanium-containing electric furnace molten slag, and magnesium aluminium spinel and forsterite were successfully converted to aluminates and ...
YANG Yang, LI Yang, GUO Min, ZHANG Mei
doaj   +1 more source