Results 21 to 30 of about 111,417 (297)

Interstellar Silicon Depletion and the Ultraviolet Extinction [PDF]

, 2017
Spinning small silicate grains were recently invoked to account for the Galactic foreground anomalous microwave emission. These grains, if present, will absorb starlight in the far ultraviolet (UV).
Li, Aigen, Mishra, Ajay
core   +3 more sources

Effects of temperature and humidity on adhesion of water scale to glass substrates

International Journal of Ceramic Engineering & Science, 2021
The formation of silica scales from water on ceramics is a significant problem, and there is an urgent need to develop methods to prevent its formation or to remove it.
Shogo Hayashi, Tomoki Kobayashi, Shota Sakai, Noritaka Saito, Kunihiko Nakashima   +4 more
doaj   +1 more source

U(VI) Coordination Modes in Complex Uranium Silicates: Cs[(UO₆)₂(UO₂)₉(Si₂O₇)F] and Rb₂[(PtO₄)(UO₂)₅(Si₂O₇)]

Chemistry, 2022
Crystals of two new inorganic uranyl silicates, Cs[(UO6)2(UO2)9(Si2O7)F] (1) and Rb2[(PtO4)(UO2)5(Si2O7)] (2), were produced from melts in evacuated silica tubes.
Evgeny V. Nazarchuk, Oleg I. Siidra, Dmitri O. Charkin, Yana G. Tagirova   +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

The measurement of electric properties of silicate minerals [PDF]

Acta Montanistica Slovaca, 2004
In the contribution a different approach to measurements concerning dielectric properties of powder materials and compact materials will be analysed. Measurements of relative permittivity at the frequency of 50 Hz will be performed and discussed provided
Araujo Jose, Džmura Jaroslav, Marton Karol   +2 more
doaj  

Efeito de nutrientes combinados com indutores de resistência na proteção contra a vassoura-de-bruxa no cacaueiro Effect of nutrients combined with inducers of resistance on the protection of cocoa seedlings against witches' broom

Ciência e Agrotecnologia, 2008
Na busca por novos indutores de resistência contra a vassoura-de-bruxa no cacaueiro avaliou-se o efeito de vários nutrientes, acibenzolar-S-metil (ASM) e a combinação desses nutrientes com ASM.
Iris Lettiere do Socorro Santos da Silva, Mário Lúcio Vilela de Resende, Pedro Martins Ribeiro Júnior, João de Cássia do Bomfim Costa, Fabrício Rabelo Camilo, Juliana C. Baptista, Sônia Maria de Lima Salgado   +6 more
doaj   +1 more source

Importance of laboratory experimental studies of silicate grains for exoplanet atmosphere characterization

Frontiers in Astronomy and Space Sciences, 2022
The study of exoplanetary atmospheres extends the frontiers of astronomy, astrophysics, and astrochemistry. Moreover, studies of exoplanets as being linked to the search for extraterrestrial life and other habitable planets are of interest not only for ...
Alexey Potapov, Jeroen Bouwman
doaj   +1 more source

Interstellar Silicate Dust in the z=0.89 Absorber Towards PKS 1830-211: Crystalline Silicates at High Redshift?

, 2012
We present evidence of a >10-sigma detection of the 10 micron silicate dust absorption feature in the spectrum of the gravitationally lensed quasar PKS 1830-211, produced by a foreground absorption system at redshift 0.886. We have examined more than 100
Aguirre, Aguirre, Ardila, Bernard-Salas, Bernstein, Boissé, Bottinelli, Bouwman, Bringa, Calzetti, Carrez, Chary, Chengalur, Chiar, Chiar, Courbin, Dai, Daniel E. Welty, Debopam Som, Djorgovski, Donald G. York, Donnarumma, Dorschner, Elbaz, Fabian, Falco, Ferraro, Frye, Gibb, Gibb, Giovanni Vladilo, Gordon, Gruendl, Hao, Harker, Higdon, Honda, Houck, Jäger, Kemper, Kemper, Kulkarni, Kulkarni, Kulkarni, Kulkarni, Lehár, Lovell, Lynch, Madau, McGough, Molster, Monique C. Aller, Mutschke, Papovich, Pei, Pettini, Press, Prochaska, Prochaska, Prochaska, Rho, Riess, Roche, Roche, Shapley, Smith, Sofia, Spoon, Stanghellini, Storrie-Lombardi, Subrahmanyan, Subrahmanyan, Sylvester, Uchida, van Diedenhoven, Varsha P. Kulkarni, Weingartner, Welty, Werner, Whittet, Whittet, Wiklind, Winn, Wooden   +83 more
core   +1 more source

The formation mechanism of the porous structure of glass ceramics from siliceous rock

Magazine of Civil Engineering, 2020
Porous glass ceramic materials are widely used in industrial and civil engineering due to a number of redeeming features, such as high strength, low thermal conductivity, incombustibility, environmental friendliness, etc. A large number of researches are
Anatolij Ermakov, Vladimir Erofeev, Alexander Rodin, Viktor Bochkin   +3 more
doaj   +1 more source

Apical root-end filling with tricalcium silicate-based cement in a patient with diabetes mellitus: A case report [PDF]

Vojnosanitetski Pregled, 2016
Introduction. The material used for root-end filling has to be biocompatible with adjacent periapical tissue and to stimulate its regenerative processes.
Biočanin Vladimir, Milić Marija, Vučetić Milan, Baćević Miljana, Vasović Dina, Živadinović Milka, Ćetković Dejan, Ćalasan Dejan, Brković Božidar   +8 more
doaj   +1 more source