In this paper, the chemical Functionalization of Carboxylate multi-walled carbon nanotubes by methyl (triphenyl phosphoranylidene) acetate have been investigated. Phosphorus Ylides are important compound in organic chemistry. At first, methyl (triphenyl phosphoranylidene) acetate, synthesized from salt metod in two steps: the formation of the phosphonium salt and the deprotonation of the latter...

[1] Atmospheric fronts are important for the day-to-day variability of weather in the midlatitudes, particularly during winter when extratropical storm-tracks are at their maximum intensity. Fronts are often associated with heavy rain, and strongly affect the local space-time distribution of rainfall. A recently developed objective front identification method that distinguishes between cold, wa...

The thrust to develop eco-friendly procedures for the production of nanoparticles arises from the extremely recent nanotechnology research. MnO2 nanoparticles were synthesized by co-precipitation method using green chemistry. The size, structure and morphology of MnO2 nanoparticles were characterized by UV-Visible, X-Ray diffraction (XRD), FTIR techniques. The average particle size of manganese...

Tropospheric ozone depletion events (ODEs) at high latitudes were discovered 20 years ago and are attributed to bromine explosions. However, an unresolved issue is the explanation of how the acid-catalyzed reaction cycle is triggered in atmospheric particles derived from alkaline sea water. By simulating the chemistry occuring in polar regions over recently formed sea ice, we can model successf...

The Chisholm firestorm: observed microstructure, precipitation and lightning activity of a pyro-Cb D. Rosenfeld, M. Fromm, J. Trentmann, G. Luderer, M. O. Andreae, and R. Servranckx Institute of Earth Sciences, The Hebrew University of Jerusalem, Israel Computational Physics, Inc., Springfield, VA, USA Institute for Atmospheric Physics, University of Mainz, Germany Max Planck Institute for Chem...

Root- and shoot-feeding herbivores have the capacity to influence one another by modifying the chemistry of the shared host plant. This can alter rates of nutrient mineralization and uptake by neighboring plants and influence plant-plant competition, particularly in mixtures combining grasses and legumes. Root herbivory-induced exudation of nitrogen (N) from legume roots, for example, may incre...

1 Australian Institute for Innovative Materials (AIIM), Innovation Campus, University of Wollongong, NSW 2519, Australia. 2 Materials Science, California Institute of Technology, Pasadena, CA 91125, USA. 3 Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA. 4 School of Materials Science and Engineering, Tongji University, 4800 Caoan Road,...

In precipitation and dissolution of minerals, the coordinative partners of the crystal-forming ions are changed. In heterogeneous nucleation, these ions interact coordinatively (surface complex formation and ligand exchange) with the surface sites of the heteronuclei or template. The dissolution of oxides too depends on the influence of surface complex-forming ligands and on the degree of surfa...

The ability to perform rapid separations in a post nuclear weapon detonation scenario is an important aspect of national security. In the past, separations of fission products have been performed using solvent extraction, precipitation, etc. The focus of this work is to explore the feasibility of using thermochromatography, a technique largely employed in superheavy element chemistry, to expedi...