The chemical composition of a comet has always been considered to be a function of where it formed in the nebula. We suggest that the most important factor in determining a comet's chemistry might actually be when it formed. We present specific predictions of correlations between the dust and...
网络彗星化学组成 网络释义 1. 彗星化学组成 chemical-英汉词典... ... chemical composition of soil 土壤化学成分chemical composition of the comet彗星化学组成... www.fastdict.net|基于2个网页
the disk's lifetime our chemical model yields H2O, CO, CO2 and CH4 ice abundances at 10 AU (consistent with a midplane density of 10^10 cm^-3 and a temperature of 20 K) that are compatible with measurements of the chemical composition of cometary bodies for a [C/O] ratio of 0.16...
Google Share on Facebook cosmochemical Encyclopedia cos·mo·chem·is·try (kŏz′mō-kĕm′ĭ-strē) n. The scientific study of the chemical composition of the universe, especially the early universe. cos′mo·chem′i·cal(-ĭ-kəl)adj. ...
Primitive objects are shown as a wireframe model, sized and moved into a complete composition such as this Greek temple. To create complete scenes, the objects are aligned and composed, the camera positioned, lighting and atmospherics provided along with other procedural effects, then rendered out...
M. (1993), Physical and Chemical Composition of Comets-From Interstellar Space to the Earth, in J. M. Greenberg, C. X. Mendoza-Gómez, and V. Pirronello (eds.),The Chemistry of Life's Origins, Kluwer Academic Publishers, Dordrecht, pp. 195–207. Google Scholar Delsemme, A. H. (...
246 Article 118 of REACH specifically identifies the types of information the disclosure of which would normally be considered to undermine the protection of commercial interests, such as the full composition of a preparation and the precise tonnage of a substance or preparation manufactured or placed...
from them to create a planetary system. “A planet’s composition is a record of the location in the disk in which it was formed,” said Bosman. “Connecting planet and disk composition enables us to peer into the history of a planet and helps us to understand the forces that...
What does a comet look like when it is far from the Sun? How does its appearance change when it is near the Sun? As the fragment falls through the atmosphere it is heated and some of the material is vaporized. Explain how you could det...
Peak alignment was conducted by using Progenesis CoMet (Nonlinear Dynamics). The software MeV 4.8 (http://www.tm4.org/mev.html) was used for hierarchical cluster analysis. Pearson’s correlation analysis was used in this analysis. The elemental composition was calculated by using SmartFormula (...