Results 41 to 50 of about 32,962 (258)
Reactive force field for lithium-aluminum silicates with applications to eucryptite phases [PDF]
Modelling Simul. Mater. Sci. Eng. 20 (2012) 015002, 2011 We have parameterized a reactive force field (ReaxFF) for lithium aluminum silicates using density functional theory (DFT) calculations of structural properties of a number of bulk phase oxides, silicates, and aluminates, as well as of several representative clusters.
arxiv +1 more source
Chemical Engineering Transactions, 2023 Biomass as an abundant “green” renewable and CO2 neutral energy source have captured the entire world attention as a result of worsening energy crisis and environmental problems. Combustion of biomass have huge potentials of producing heat and power in a
Kunmi J. Abioye +2 more
doaj
Chemical Engineering Transactions, 2014 Combustion of wheat straw for heat and power production is often challenging due to ash related problems such as fouling deposition and high temperature corrosion.
L. Wang, T. Lovas, E. Houshfar
doaj +1 more source
Association of indigo with zeolites for improved colour stabilization [PDF]
Applied Spectroscopy 64, 10 (2010) 1131-1138, 2012 The durability of an organic colour and its resistance against external chemical agents and exposure to light can be significantly enhanced by hybridizing the natural dye with a mineral. In search for stable natural pigments, the present work focuses on the association of indigo blue with several zeolitic matrices (LTA zeolite, mordenite, MFI zeolite).
arxiv +1 more source
Structural properties of molten silicates from ab initio molecular-dynamics simulations: comparison between CaO-Al$_2$O$_3$-SiO$_2$ and SiO$_2$ [PDF]
, 2001 We present the results of first-principles molecular-dynamics simulations of molten silicates, based on the density functional formalism. In particular, the structural properties of a calcium aluminosilicate $ [$ CaO-Al$_2$O$_3$-SiO$_2$ $ ]$ melt are compared to those of a silica melt.
arxiv +1 more source
Elastoplastic coupling to model cold ceramic powder compaction [PDF]
Journal of the European Ceramic Society, 2014, 2014 The simulation of industrial processes involving cold compaction of powders allows for the optimization of the production of both traditional and advanced ceramics. The capabilities of a constitutive model previously proposed by the authors are explored to simulate simple forming processes, both in the small and in the large strain formulation.
arxiv +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. +12 more
core +2 more sources
Experimental investigation of the elastoplastic response of aluminum silicate spray dried powder during cold compaction [PDF]
, 2014 Mechanical experiments have been designed and performed to investigate the elasto-plastic behaviour of green bodies formed from an aluminum silicate spray dried powder used for tiles production. Experiments have been executed on samples obtained from cold compaction into a cylindrical mould and include: uniaxial strain, equi-biaxial flexure and high ...
arxiv +1 more source
Cloud-convection feedback in brown dwarfs atmosphere [PDF]
, 2022 Numerous observational evidence has suggested the presence of active meteorology in the atmospheres of brown dwarfs. A near-infrared brightness variability has been observed. Clouds have a major role in shaping the thermal structure and spectral properties of these atmospheres.
arxiv +1 more source
Alkali-silica reaction – a multidisciplinary approach
RILEM Technical Letters, 2022 In the last four years, a multidisciplinary study involving several research groups in Switzerland tackled a number of unsolved, fundamental issues about the alkali-silica reaction (ASR) in concrete.
Andreas Leemann +15 more
doaj +1 more source