Gas-phase Condensation of Carbonated Silicate Grains
The Astrophysical JournalReports on the detection of carbonates in planetary nebulae (PNe) and protostars have suggested the existence of a mechanism that produces these compounds in stellar winds and outflows.
Gaël Rouillé +3 more
doaj +3 more sources
On Ultrasmall Silicate Grains in the Diffuse Interstellar Medium [PDF]
Astrophysical Journal, 2001 Submitted to ApJ Letters, 11 pages, 4 figures ...
Aigen Li
exaly +3 more sources
Tabulated optical properties of graphite and silicate grains
Astrophysical Journal, Supplement Series, 1985 On donne les fonctions dielectriques complexes pour le graphite et le «silicate astronomique» pour les longueurs d'onde λ comprises entre 2000 μm et 200 A, ainsi que Q abs , l'albedo et pour des spheres a=0,01 μm et a=0,1 ...
Draine B T, B T Draine
exaly +2 more sources
Energetic Processing of Interstellar Silicate Grains by Cosmic Rays [PDF]
Astrophysical Journal, 2007 While a significant fraction of silicate dust in stellar winds has a crystalline structure, in the interstellar medium nearly all of it is amorphous. One possible explanation for this observation is the amorphization of crystalline silicates by relatively ‘‘low’’ energy, heavy-ion cosmic rays.
Diego F Torres +2 more
exaly +2 more sources
Microenvironments on individual sand grains enhance nitrogen loss in coastal sediments [PDF]
Scientific ReportsThe permeable silicate sediments which cover more than 50% of the continental shelves are a major, but poorly constrained sink for the vast amount of anthropogenic nitrogen (N) that enters the ocean.
Farooq Moin Jalaluddin +5 more
doaj +2 more sources
Absorptive properties of silicate core-mantle grains
Astrophysical Journal, 1975 Absorption and extinction efficiencies for silicate and silicate core- ice mantle grains are presented for olivine-type particles in the wavelength range 0.07 $mu$-10$sup 3$ $mu$, for fused quartz-type particles in the range 0.056 $mu$-10$sup 3$ $mu$, and for lunar silicate-type particles in the range 1 $mu$-10$sup 3$ $mu$. Comparison with the observed
exaly +2 more sources
Consequence of Sprinkling with Nano Zinc and Nano Selenium as well as Potassium Silicate on Yields And Excellence of Wheat Grains under Water Stress Conditions [PDF]
Journal of Plant Production, 2021 Toward decide the consequence of treating with nano zinc and nano selenium as well as potassium silicate as foliar application on, yield and excellence of bread wheat grains underneath water stress situations during 2019 for each 2020 and 2020 for each ...
Samar Ghazy, W. Abido, S. Seadh
doaj +1 more source
Silicon Fertilization: A Step towards Cadmium-Free Fragrant Rice
Plants, 2021 Soil contamination with toxic cadmium (Cd) is becoming a serious global problem and poses a key hazard to environments and the health of human beings worldwide.
Qamar uz Zaman +9 more
doaj +1 more source
Impact of Potassium Silicate Compound as Foliar Application on the Growth, Yield and Grains Quality of GIZA 179 Rice Cultivar. [PDF]
Journal of Plant Production, 2017 Two field experiments were conducted at the Experimental Farm of Rice Research Department (R.R.D.), Sakha, Kafrelsheikh, Egypt during 2015 and 2016 seasons.
Mariam Wissa
doaj +1 more source
The shape and composition of interstellar silicate grains [PDF]
Astronomy & Astrophysics, 2006 We investigate the composition and shape distribution of silicate dust grains in the interstellar medium. The effect of the amount of magnesium in the silicate lattice is studied. We fit the spectral shape of the interstellar 10 mu extinction feature as observed towards the galactic center.
Kemper, Ciska +6 more
openaire +6 more sources