This chapter discusses how the geology of the water shed of a lake causes differences in the chemical composition of the water. Before dealing with the compounds dissolved in water, it is necessary to examine the properties of water itself. In a water molecule the two hydrogen–oxygen bonds ...
of fuels, which when combusted, release their energy. This type of energy storage requires the production of the fuel itself, and the amount of energy available is dependent on the chemical composition of the material combusted. Another form of chemical energy storage that has been investigated ...
Methane from microbial hydrogenolysis of sediment organic matter before the Great Oxidation Event Microbial CH4 kept the early Earth warm under the faint young sun, but clear records are lacking. Here the authors present isotopic evidence that CH4 seepage in the Canadian shield is from hydrogen bio...
regardless of the use of atom-centered, plane-wave, or numerical basis sets. On one side, they provide access to electron counting properties, including electron populations and their statistics13, the key to a proper understanding of the role of electron localization and delocalization, ...
Obviously, the processes determining mineral composition of sandstones are more complex than simple mixing ones from source areas of different kinds. The discrepancy is great between observed and theoretically possible combinations of minerals.This is a preview of subscription content, log in via an ...
Karunen, P.: Determination of Fatty Acid Composition of Spore Lipids of the Moss Polytrichum commune by Glass Capillary Column Gas Chromatography. Physiol. Plant. 40, 239 (1977). Article CAS Google Scholar Karunen, P.: Fatty Acid Composition of Glycosyl Diglycerides in Ceratodon purpureus, Plag...
Fourth, the kinetics tends to open the mechanism of the chemical process, to reveal from which elementary steps it consists, what intermediate compounds are formed in it, via what routes reactants are transformed into products, and what factors are responsible for the composition of products...
Some of the obvious questions worthy of further investigation include: 1. Does the most appropriate grounding for substance identification derive from macroscopic criteria rooted in thermodynamics or microscopic criteria based on composition and structure? Is there a simple, unified account that adequately...
Nanostructure engineering and doping of conjugated carbon nitride semiconductors for hydrogen photosynthesis. Angew. Chem. Int. Ed. 52, 1735–1738 (2013). Article CAS Google Scholar Bässler, H. & Köhler, A. in Unimolecular and Supramolecular Electronics I Vol. 312 (ed. Metzger, R. M.)...
The chemical composition of the material employed in this work is 0.2C–10.2Mn–2.8Al–1Si in weight per cent (0.8C–9.9Mn–5.5Al–1.9Si in atomic per cent). Its mass density was calculated to be ~7.5 g cm–3 based on equations in ref. 44, which is ~4% lighter than iron an...