Results 81 to 90 of about 35,568 (228)

Development of various methods for PrF3 nanoparticles synthesis [PDF]

open access: yesarXiv, 2011
The six nanosized PrF3 samples were synthesized using two different chemical reactions and different time of hydrothermal reaction. The X-ray and HRTEM experiments showed high crystallinity of synthesized samples. For all samples the particles size distribution was obtained. It was shown, that precursors of chemical reaction have influence on the shape
arxiv  

Methane release on Early Mars by atmospheric collapse and atmospheric reinflation [PDF]

open access: yes, 2019
A candidate explanation for Early Mars rivers is atmospheric warming due to surface release of H$_2$ or CH$_4$ gas. However, it remains unknown how much gas could be released in a single event.
Gao, Peter   +4 more
core   +1 more source

Accretion and Preservation of D-rich Organic Particles in Carbonaceous Chondrites: Evidence for Important Transport in the Early Solar System Nebula [PDF]

open access: yes, 2010
We have acquired NanoSIMS images of the matrices of CI, CM, and CR carbonaceous chondrites to study, in situ, the organic matter trapped during the formation of their parent bodies. D/H ratio images reveal the occurrence of D-rich hot spots, constituting
Eiler, J. M.   +3 more
core  

SiO$_2$-mediated facile hydrothermal synthesis of spiroffite-type Co$_2$Te$_3$O$_8$ [PDF]

open access: yesarXiv
The hydrothermal synthesis of novel materials typically relies on both knowledge of the redox activities of all cations present in the reaction solution and a small toolset of so-called mineralizers to tune the solution's overall chemical potential.
arxiv  

Thermal Pollution Mathematical Model. Volume 5: User's Manual for Three-Dimensional Rigid-Lid Model [PDF]

open access: yes
A user's manual for a three dimensional, rigid lid model used for hydrothermal predictions of closed basins subjected to a heated discharge together with various other inflows and outflows is presented.
Lee, S. S.   +3 more
core   +1 more source

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