Silicate absorption in heavily obscured galaxy nuclei [PDF]
Mon.Not.Roy.Astron.Soc.375:99-104,2007, 2006 Spectroscopy at 8-13 microns with T-ReCS on Gemini-S is presented for 3 galaxies with substantial silicate absorption features, NGC 3094, NGC 7172 and NGC 5506. In the galaxies with the deepest absorption bands, the silicate profile towards the nuclei is well represented by the emissivity function derived from the circumstellar emission from the red ...
arxiv +1 more source
Monte Carlo Simulation of Dust Particles in a Protoplanetary Disk: Crystalline to Amorphous Silicate Ratio in Comets [PDF]
, 2022 Observationally inferred crystalline abundance in silicates in comets, which should have been formed in the outer region of a protoplanetary disk, is relatively high (~ 10-60%), although crystalline silicates would be formed by annealing of amorphous precursors in the disk inner region.
arxiv +1 more source
EVALUATION OF FLEXURAL RIGIDITY OF COTTON FABRICS TREATED WITH POLIURETHANE AND ACRILYC RESIN AND MONTMORILLONITE PARTICLES [PDF]
Annals of the University of Oradea: Fascicle of Textiles, Leatherwork, 2020 Textile manufacturers are demonstrating an increasing interest in the application of different types of micro or nanoparticles in order to add new properties to the fabric.
CARETTE Margaux +4 more
doaj
The silicate absorption profile in the ISM towards the heavily obscured nucleus of NGC 4418 [PDF]
, 2015 The 9.7-micron silicate absorption profile in the interstellar medium provides important information on the physical and chemical composition of interstellar dust grains. Measurements in the Milky Way have shown that the profile in the diffuse interstellar medium is very similar to the amorphous silicate profiles found in circumstellar dust shells ...
arxiv +1 more source
Coffee‐ring‐effect‐induced water scale formation of silicic acid‐containing droplet
International Journal of Ceramic Engineering & Science, 2020 The drying behavior of silicic acid‐containing water droplets on a glass substrate was investigated by using as‐prepared aqueous silica solutions of varying concentrations to simulate water scale‐like formation.
Shogo Hayashi +3 more
doaj +1 more source
, 2010 We report the identification of presolar silicates (~177 ppm), presolar oxides (~11 ppm), and one presolar SiO2 grain in the Allan Hills (ALHA) 77307 chondrite.
Alexander +73 more
core +1 more source
Silicate Composition of the Interstellar Medium [PDF]
, 2016 The composition of silicate dust in the diffuse interstellar medium and in protoplanetary disks around young stars informs our understanding of the processing and evolution of the dust grains leading up to planet formation. Analysis of the well-known 9.7{\mu}m feature indicates that small amorphous silicate grains represent a significant fraction of ...
arxiv +1 more source
Investigation of Accelerated Hydration in Nanosilica Incorporated Tricalcium Silicate using THz Spectroscopy [PDF]
arXiv, 2021 The incorporation of nanosilica in cementitious systems helps in accelerating the cement hydration process and early-stage formation of the main hydration product, that is, calcium silicate hydrate. Nanosilica reacts with the other key hydration product, calcium hydroxide to form additional calcium silicate hydrate. In this work, Terahertz spectroscopy
arxiv
Biosilicification Drives a Decline of Dissolved Si in the Oceans through Geologic Time
Frontiers in Marine Science, 2017 Biosilicification has driven variation in the global Si cycle over geologic time. The evolution of different eukaryotic lineages that convert dissolved Si (DSi) into mineralized structures (higher plants, siliceous sponges, radiolarians, and diatoms) has
Daniel J. Conley +10 more
doaj +1 more source