Results 31 to 40 of about 29,742 (296)

Water Quality Assessment of Lakes (Ain Al-Ghazala and Umm-Hufayn) for Fish Culture in the Eastern Coast of Libya

مجلة المختار للعلوم, 2022
Assessments of some physical and chemical properties were conducted  for two Libyan water bodies (Ain Al- Ghazala and Umm-Hufayn). Of each ecosystem, ten water samples were taken from ten points for analysis.
Amani F. Fitori, Anwar A. R. Al-Mismari, Aldoushy A. Mahdy, Rashad E.M. Said, Ashraf N. Masoud   +4 more
doaj   +1 more source

Atmospheric Chemistry in Giant Planets, Brown Dwarfs, and Low-Mass Dwarf Stars III. Iron, Magnesium, and Silicon [PDF]

, 2010
We use thermochemical equilibrium calculations to model iron, magnesium, and silicon chemistry in the atmospheres of giant planets, brown dwarfs, extrasolar giant planets (EGPs), and low-mass stars.
Bruce Fegley, Burgasser, Burgasser, Burgasser, Burrows, Burrows, Channon Visscher, Chase, Cushing, Cushing, Cushing, Edvardsson, Fegley, Geballe, Gurvich, Jones, Katharina Lodders, Kirkpatrick, Lisse, Lodders, Lodders, Lodders, Lodders, Lodders, McLean, Meléndez, Nakajima, Reid, Robie, Tsuji, Visscher, Weck   +31 more
core   +1 more source

Investigation of improving the thermophysical properties and corrosion resistance of RE2SiO5/RE2Si2O7 multiphase silicates by component design with RE doping

Journal of Advanced Ceramics
In this research, a novel method for regulating components in RE2SiO5/RE2Si2O7 multiphase silicates was developed, combining the benefits of a suitable thermal expansion coefficient (CTE) and outstanding corrosion resistance against calcium–magnesium ...
Zeyu Chen, Yiling Huang, Zhaoxuan Zhang, Wei Zheng, Xuemei Song, Yaran Niu, Yi Zeng   +6 more
doaj   +1 more source

Rice husk ash and zeolite-siliceous rock as sources of amorphous silicon dioxide [PDF]

E3S Web of Conferences
The present article is referred to the study of amorphous analogs of silicon dioxide obtained from raw materials of plant and fossil origin available on the domestic market.
Gotlib Elena, Mishagin Kirill, Gabdulkhayev Kamil, Sokolova Alla   +3 more
doaj   +1 more source

Technology of Processing Plant Extracts Using an Aluminometasilicate Porous Carrier into a Solid Dosage Form

Pharmaceutics, 2022
A method of preparing tablets called liquisolid technique is currently emerging. In these formulations, an important role is played by porous carriers, which are the basic building blocks of liquisolid systems (LSSs). The most common are microcrystalline
Klára Kostelanská, Slavomír Kurhajec, Sylvie Pavloková, David Vetchý, Jan Gajdziok, Aleš Franc   +5 more
doaj   +1 more source

Tomography of silicate dust around M-type AGB stars I. Diagnostics based on dynamical models

, 2017
The heavy mass loss observed in evolved asymptotic giant branch stars is usually attributed to a two-step process: atmospheric levitation by pulsation-induced shock waves, followed by radiative acceleration of newly formed dust grains.
Aringer, B., Bladh, S., Höfner, S., Paladini, C.   +3 more
core   +1 more source

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source

Tracing the development of dust around evolved stars: The case of 47 Tuc [PDF]

, 2006
We observed mid-infrared (7.5-22 mum) spectra of AGB stars in the globular cluster 47 Tuc with the Spitzer telescope and find significant dust features of various types. Comparison of the characteristics of the dust spectra with the location of the stars
Dorschner J., Eriksson T. S., Henning Th., Hron J., J. Bouwman, K. Hinkle, Onaka T., Ossenkopf V., P. R. Wood, Posch Th., Th. Lebzelter, Th. Posch, Wood P. R.   +12 more
core   +2 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Effect of additives on hydration and hardening of magnesia compositions

MATEC Web of Conferences, 2018
The article is devoted to the investigation of the influence of technological factors on the hydration and hardening of magnesia compositions. The objective – is investigation magnesia compositions with different additives.
Miryuk Olga
doaj   +1 more source