نتایج جستجو برای: chemical element
تعداد نتایج: 575159 فیلتر نتایج به سال:
The quest for superheavy elements (SHEs) is driven by the desire to find and explore one of the extreme limits of existence of matter. These elements exist solely due to their nuclear shell stabilization. All 15 presently 'known' SHEs (11 are officially 'discovered' and named) up to element 118 are short-lived and are man-made atom-at-a-time in heavy ion induced nuclear reactions. They are iden...
A numerical modeling of coupled flow, transport, and chemical reactions is critical to understand the dynamic processes in natural porous media and manage subsurface resources, such as CO2 sequestration, water aquifers, and oil reservoirs. In this work, two molar formulations for coupled flow, transport, and chemical reactions are proposed, namely, the overall-composition and the element formul...
This paper develops a connection between the phenomenology of chemical bonding and the theory of relativity. Empirical correlations between electron numbers in atoms and chemical bond stabilities in molecules are first reviewed and extended. Quantitative chemical bond strengths are then related to ionization potentials in elements. Striking patterns in ionization potentials are revealed when th...
one of the applications of nanotechnology is use of carbon nanotubes for the targeted delivery of drug molecules. to demonstrate the physical and chemical properties of biomolecules and identify new material of drug properties, the interaction of carbon nanotubes (cnts) with biomolecules is a subject of many investigations. cnts is a synthetic compound with extraordinary mechanical, thermal, el...
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