Search Results - "Riveros, J. M."
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Pterodon pubescens Oil: Characterisation, Certification of Origin and Quality Control via Mass Spectrometry Fingerprinting Analysis
Published in Phytochemical analysis (01-02-2013)“…ABSTRACT Introduction The oil obtained from Pterodon pubescens (Leguminosae) seeds are known to display anti‐cancer, anti‐dermatogenic and anti‐nociceptive…”
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Personal exposure to air pollutants in a Bus Rapid Transit System: Impact of fleet age and emission standard
Published in Atmospheric environment (1994) (01-04-2019)“…This work documents the extremely high concentrations of fine aerosol particles (PM2.5), equivalent black carbon (eBC) and carbon monoxide (CO) experienced by…”
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Ab Initio Study of the Isomeric Equilibrium of the HCN···H2O and H2O···HCN Hydrogen-Bonded Clusters
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (31-08-2006)“…An ab initio study of the stability, spectroscopic properties, and isomeric equilibrium of the hydrogen-bonded HCN···H2O and H2O···HCN isomers is presented…”
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Recent advances in the energetics and mechanisms of gas-phase ionic reactions
Published in Pure and applied chemistry (30-10-1998)“…Abstract…”
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Gas-phase solvated negative ions
Published in Mass spectrometry reviews (1998)“…The association of negative ions to neutral molecules has been an active field of research in gas‐phase ion chemistry since 1970. For anions, which correspond…”
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The Gas-Phase Reaction Between Hydroxide Ion and Methyl Formate: A Theoretical Analysis of the Energy Surface and Product Distribution
Published in Chemistry : a European journal (05-01-2001)“…The potential energy surface for the prototype solvent‐free ester hydrolysis reaction: OH−+HCOOCH3→products has been characterized by high level ab initio…”
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Kinetic and spectroscopic characterization of the isomers of the allyl bromide molecular ion
Published in Journal of the American Society for Mass Spectrometry (01-09-1991)“…The kinetics of the ion/molecule reactions of the molecular ion of allyl bromide (3-bromopropene), C 3H 5Br +., with its neutral show that only (82 ± 2)% of…”
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Experimental and Theoretical Characterization of Long-Lived Triplet State CH3CH2S+ Cations
Published in Journal of the American Chemical Society (18-10-2000)“…Gas-phase [C2H5S]+ ions obtained by electron impact ionization from CH3SC2H5 at 13 eV undergo three distinct low-pressure ion/molecule reactions with the…”
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Formation of gas-phase solvated Br- and I- in ion/molecule reactions of halobenzenes. Revised heat of formation of benzyne
Published in Journal of the American Chemical Society (30-01-1991)Get full text
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Relative Gas-phase Acidities of Fluoro- and Chlorobenzene
Published in Journal of mass spectrometry. (01-07-1996)“…The gas‐phase equilibrium reaction between fluorobenzene and chlorobenzene and their conjugate bases was studied by Fourier transform ion cyclotron resonance…”
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Theoretical Calculation of pK a Using the Cluster−Continuum Model
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (15-08-2002)“…The pK a's of 17 species from −10 to 50 were calculated using the ab initio MP2/6-311+G(2df,2p) level of theory and inclusion of solvent effects by the…”
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Long-term brown carbon and smoke tracer observations in Bogotá, Colombia: association with medium-range transport of biomass burning plumes
Published in Atmospheric chemistry and physics (26-06-2020)“…Light-absorbing aerosols emitted during open biomass burning (BB) events such as wildfires and agricultural burns have a strong impact on the Earth's radiation…”
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Ab initio study of the isomeric equilibrium of the HCN...H2O and H2O...HCN hydrogen-bonded clusters
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (31-08-2006)“…An ab initio study of the stability, spectroscopic properties, and isomeric equilibrium of the hydrogen-bonded HCN...H2O and H2O...HCN isomers is presented…”
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Relative threat and recognition ability in the responses of tropical mockingbirds to song playback
Published in Animal behaviour (01-04-2007)“…It has been suggested that individual recognition based on song may be constrained by repertoire size in songbirds with very large song repertoires. This…”
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The Cluster−Continuum Model for the Calculation of the Solvation Free Energy of Ionic Species
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (02-08-2001)“…A hybrid approach using a combination of explicit solvent molecules and the isodensity polarizable continuum model (IPCM) method is proposed for the…”
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Phenotypic flexibility in the intestinal enzymes of the African clawed frog Xenopus laevis
Published in Comparative biochemistry and physiology. Part A, Molecular & integrative physiology (2005)“…The intestinal plasticity of digestive enzymes of amphibian species is poorly known. The goal of this study was to characterize digestive enzyme profiles along…”
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An Unusually Fast Nucleophilic Aromatic Displacement Reaction: The Gas-Phase Reaction of Fluoride Ions with Nitrobenzene
Published in Angewandte Chemie International Edition (05-07-2004)“…Quick reactions: The gas‐phase nucleophilic displacement reaction of fluoride ions with nitrobenzene proceeds with a rate constant close to the collision…”
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New values for the absolute solvation free energy of univalent ions in aqueous solution
Published in Chemical physics letters (29-12-2000)“…The absolute solvation free energy of 30 univalent ions, mainly organic species, has been calculated from experimental and theoretical data on proton…”
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