Results 31 to 40 of about 471,803 (410)

9.7 um Silicate Features in AGNs: New Insights into Unification Models [PDF]

, 2006
We describe observations of 9.7 um silicate features in 97 AGNs, exhibiting a wide range of AGN types and of X-ray extinction toward the central nuclei.
Antonucci R., Belsole E., Brunner H., D. C. Hines, F. J. Low, G. H. Rieke, Granato G. L., J. Bouwman, K. Cleary, M. W. Werner, P. S. Smith, Roche P. F., Roche P. F., Rowan-Robinson M., Turner T. J., V. Gorjian, Wang T., Y. Shi   +17 more
core   +1 more source

A Review: Fundamental Aspects of Silicate Mesoporous Materials

Materials, 2012
Silicate mesoporous materials have received widespread interest because of their potential applications as supports for catalysis, separation, selective adsorption, novel functional materials, and use as hosts to confine guest molecules, due to their ...
Z. Alothman
semanticscholar   +1 more source

Changes of Periphyton Abundance and Biomass Driven by Factors Specific to Flooding Inflow in a River Inlet Area in Erhai Lake, China

Frontiers in Environmental Science, 2021
Periphyton is an ecological essential in freshwater lakes and rivers. Its abundance and biomass are very dynamic in various habitats and subject to various factors, for example, nutrient and light.
Wenjing Ren, Wenjing Ren, Yiqian Yao, Yiqian Yao, Zhonghai Zhang, Zhonghai Zhang, Yu Cao, Changbo Yuan, Changbo Yuan, Hao Wang, Hao Wang, Qing Chuan Chou, Qing Chuan Chou, Leyi Ni, Xiaolin Zhang, Te Cao   +15 more
doaj   +1 more source

A structure hierarchy for silicate minerals: sheet silicates [PDF]

Mineralogical Magazine, 2018
AbstractThe structure hierarchy hypothesis states thatstructures may be ordered hierarchically according to the polymerisation of coordination polyhedra of higher bond-valence. A hierarchical structural classification is developed for sheet-silicate minerals based on the connectedness of the two-dimensional polymerisations of (TO4) tetrahedra, where T =
Elena Sokolova, Frank C. Hawthorne, Yulia Uvarova   +2 more
openaire   +2 more sources

Research on the Adsorption Behavior of Heavy Metal Ions by Porous Material Prepared with Silicate Tailings

Minerals, 2019
Tailings generated from mineral processing have attracted worldwide concerns due to creating serious environmental pollution. In this work, porous adsorbents were prepared as a porous block by using silicate tailings, which can adsorb heavy metal ions ...
Dongxia OuYang, Y. Zhuo, L. Hu, Q. Zeng, Yue-hua Hu, Zhiguo He   +5 more
semanticscholar   +1 more source

Modelling and numerical simulation of fire in a coffee storage hall [PDF]

E3S Web of Conferences, 2021
An approach for modelling of fire in halls at solid materials burning, based on gas phase combustion models in ANSYS/CFX, is proposed. The models are suitable for quick prediction of the flue gases distribution and thermal loads on the building envelopes
Krumov Kalin, Penkova Nina, Mladenov Boian, Stoyanov Yordan   +3 more
doaj   +1 more source

New interaction potentials for alkaline earth silicate and borate glasses [PDF]

, 2021
Structure and properties of magnesium silicate and borate melts and glasses were investigated by using newly parameterized interaction potentials in molecular dynamics simulations and compared with those of calcium silicate and borate. The competition between the depolymerization of the silica network and the formation of new bonds with modifier ions ...
arxiv   +1 more source

Iron, silicate, and light co-limitation of three Southern Ocean diatom species [PDF]

, 2008
The effect of combined iron, silicate, and light co-limitation was investigated in the three diatom species Actinocyclus sp. Ehrenberg, Chaetoceros dichaeta Ehrenberg, and Chaetoceros debilis Cleve, isolated from the Southern Ocean (SO).
A Abelmann, A Leynaert, A Tsuda, BG Mitchell, CL La Rocha de, DA Hutchins, DE Sigmon, DJS Montagnes, DM Nelson, DM Nelson, DN Thomas, E Paasche, EV Dafner, FMM Morel, G Sarthou, H Hillebrand, HJW Baar de, I. Peeken, JA Raven, JH Martin, K Banse, K Grasshoff, K Leblanc, K. Lochte, KH Coale, KH Coale, KR Timmermans, L. J. Hoffmann, LJ Hoffmann, LJ Hoffmann, MA Brzezinski, MA Brzezinski, MA Brzezinski, P Claquin, P Tréguer, P Tréguer, PJ Harrison, PN Sedwick, RF Strzepek, RF Strzepek, RM Greene, RM Greene, S Blain, SW Chisholm, SW Jeffrey, T Oijen van, V Martin-Jézéquel, VM Franck, VM Franck, W Admiraal, WG Sunda   +50 more
core   +1 more source

Photoluminescence processes in τ-phase Ba1.3Ca0.7-x-ySiO4:xDy3+/yTb3+ phosphors for solid-state lighting

Royal Society Open Science, 2022
The τ-phase Ba1.3Ca0.7-x-ySiO4:xDy3+/yTb3+ phosphors co-doped with Dy3+ (x = 0.03) and Tb3+ (y = 0.01–0.05) trivalent rare-earth ions were prepared by the gel-combustion method.
Desta R. Golja, Menberu M. Woldemariam, Francis B. Dejene, Jung Yong Kim   +3 more
doaj   +1 more source

Silicate Emission in the TW Hydrae Association [PDF]

, 2000
The TW Hydrae Association is the nearest young stellar association. Among its members are HD 98800, HR 4796A, and TW Hydrae itself, the nearest known classical T Tauri star.
Augereau J. C., David K. Lynch, Malfait K., Michael L. Sitko, Ray W. Russell, Rucinski S. M., Sylvester R. J., van den Ancker M. E.   +7 more
core   +2 more sources