Browsing by Title

Now showing items 32274-32293 of 92550

    • Electron heating in a collisionless plasma 
      Sandoval Parra, Astor Emar (Universidad de Chile, 2019)
      Los plasmas son comunes en diferentes sistemas astronómicos. Una parte importante de estos plasmas están en el régimen no colisional, en que el camino libre medio de las partículas que lo componen es más grande que el ...
    • Electron localization function as a measure of electron delocalization and aromaticity 
      Fuentealba Rosas, Patricio; Santos, Juan C. (2011)
      The Electron Localization Function (ELF) has played in the last time an important role in understanding the special characteristics of the chemical bond. The chemical interpretation of the ELF as an indicator of the regions ...
    • Electron localization in intramolecular proton transfer 
      Maulén Jara, Boris Eduardo (Universidad de Chile, 2019)
      The electron localization function (ELF) is a scalar field that accounts of the excess of electronic kinetic energy due to Pauli repulsion between electrons with the same spin. With this function, it is possible to divide ...
    • Electron microscopic study of the innervation of the renal tubules and urinary bladder epithelium in Rana ... 
      Tsuneki, Kazuhiko; Kobayashi, Hideshi; Gallardo, Roberto; Pang, Peter K.T. (1984)
      The fine structure of the kidney and the bladder of the bullfrog (Rana catesbeiana), the bullfrog tadpole, and the mudpuppy (Necturus maculosus) were studied with special attention to the innervation of renal tubule cells ...
    • Electron Paramagnetic Resonance Study of Copper− Ethylenediamine Complex Ion Intercalated in Bentonite 
      Donoso, José Pedro; Magon, Claudio J.; Lima, José F.; Nascimento, Otaciro R.; Benavente Espinosa, Eglantina; Moreno, Mabel; González Rees, Guillermo (American Chemical Society, 2013)
      This work reports on studies of two-dimensional networks of Cu2+ ions, built by exchanging Na-bentonite with Cu2+ aqueous or with the bis(ethylenediamine) complex, [Cu(C2H4 (NH2))2]2+, at different concentrations of the ...
    • An Electron Spin Resonance (ESR) investigation of potential ligands of inorganic interest with nitro substituents 
      Atria Salas, Ana María; Valenzuela Pedevila, Jorge; Contreras, M.; Zolezzi Carvallo, Santiago (MARCEL DEKKER INC, 2002)
      Electron Spin Resonance spectra were obtained of the salicyliden-2-imino-5-nitropyrimidine (1(.-)), N,N-bis(5-nitro-salicyliden). ethylendiamine (2(.-)), 2-hydroxy-5-nitro-benziliden-5-iminoquinoline (3(.-)) anion I radicals ...
    • Electron Spin Resonance and electrochemical studies of oxidation products derivates of apomorphine in aprotic ... 
      Olea Azar, Claudio; Alarcón, J.; Opazo, L.; Abarca, B.; Ballesteros, R.; Bielsa, P. (Sociedad Chilena de Quimica, 2002)
      Apomorphine acts as contractile muscular agent through an extra cellular calcium mechanism dependent. This activity is accompanied with autoxidacion process producing o-quinone derivates. o-Quinone is also obtained by ...
    • Electron spin resonance studies and theoretical quantum calculations of free radicals generated from ... 
      Olea Azar, Claudio; Mendizábal Emaldía, Fernando; Alarcón, Jaime; Briones, Rodolfo; Cassels Niven, Bruce; Delgado Castro, Tomás; Araya Maturana, Ramiro (PERGAMON-ELSEVIER SCIENCE LTD, 2001-08)
      The ESR spectra of radicals obtained by electrolytic reduction of 4,4-dimethylanthracene- 1,9,10 (4H)-trione (1) and the regioisomeric quinones 8-acetyloxymethyl-4,4,5-trimethyl- (2), and 5-acetyloxy-methyl-4,4,8-trimeth ...
    • Electron spin resonance studies in acrylamide polymerization using rhenium complexes as photosensitizers 
      Olea Azar, Claudio; Terraza, C. A.; Guerrero, J.; Rigol Olsen, Carolina; Recabarren Gajardo, Gonzalo Iván (SOCIEDAD CHILENA DE QUIMICA, 2002-09)
      Acrylamide can be polymerized using new catalytic systems. These are based on rhenium complexes as photosensitizers with triethylamine (TEA). Electron Spin Resonance (ESR) was used for the detection of radicals species ...
    • ELECTRON TRANSFER RATES OF ALKYL–FERROCENE MOLECULES FORMING INCOMPLETE MONOLAYER ON SILICON ELECTRODES 
      Riveros, G.; Meneses, S.; Escobar, S.; Garín, C.; Chornik Aberbuch, Boris (2010)
      This study shows the results obtained when binding alkyl ferrocene molecules on silicon surface forming incomplete monolayers. The electrodic surface functionalization is carried out by a two step procedure: First, a ...
    • Electron-phonon coupling in mixed-valence systems 
      Rivas, Miguel; Rössler, Jaime; Kiwi Tichauer, Miguel (1991)
      The electron-phonon interaction in mixed-valence systems is modeled on the basis of an Anderson-like Hamiltonian that describes a cluster of one metallic rare-earth cation surrounded by six anions. Coupling between the ...
    • Electronegativity under confinement 
      Robles Navarro, Andrés; Cárdenas Castro, Carlos Patricio; Fuentealba Rosas, Patricio Armando (MDPI, 2021)
      The electronegativity concept was first formulated by Pauling in the first half of the 20th century to explain quantitatively the properties of chemical bonds between different types of atoms. Today, it is widely known ...
    • Electronic and atomic structure of complex defects in Al- and Ga-highly doped ZnO films 
      Menéndez Proupin, Eduardo; Palacios, Pablo; Wahnón, Perla (Elsevier, 2015)
      Point defects in Ga- and Al-doped ZnO thin films are studied by means of first principles electronic structure calculations. Candidate defects are identified to explain recently observed differences in electrical and ...
    • Electronic and magnetic properties of iron (III) dinuclear complexes with carboxylate bridges 
      Paredes García, Verónica; Latorre, Ramón; Spodine Spiridonova, Evgenia (2004)
      A series of dinuclear iron (III) complexes with carboxylate bridges, of the type [Fe2L2(H20)4](NO 3)2(H2O)m (m=1-3), where L=Schiff base derived from L-α-amino acids and salicylaldehyde have been prepared and characterised ...
    • Electronic and optical properties of [Au(CH3CSS)](4)cluster. A quantum chemistry study 
      Mendizábal Emaldia, Fernando; Miranda Rojas, Sebastián (Royal Society of Chemistry, 2020)
      The uses of the sulfur-gold bond in the design of new molecular clusters have gained increasing attention in recent years. Their size and shape are diverse providing a wide variety of optical and electronic properties. ...
    • Electronic and optical properties of metalloporphyrins of zinc on TiO2 cluster in dye sensitized solar cells ... 
      Mendizábal Emaldía, Fernando; Mera Adasme, Raúl; Xu, Wen Hua; Sundholm, Dage (Royal Society of Chemistry, 2017)
      Dye-sensitized solar-cell (DSSC) systems have been investigated by calculating light-absorption and electron-injection processes of the LD13 ([5,15-bis(2,6-(1,1-dimethylethyl)-phenyl)-10-4-dimethylaminophenylethynyl-20-4-carboxy ...
    • Electronic and Photophysical Properties of Re I (CO) 3 Br Complexes Modulated by Pyrazolyl-Pyridazine Ligands 
      Saldías, Marianela; Guzmán, Nicolás; Palominos, Franco; Sandoval-Altamirano, Catalina; Günther, Germán; Pizarro, Nancy; Vega, Andrés (American Chemical Society, 2019)
      The direct reaction of a series of substituted (1H-pyrazol-1-yl)pyridazine (L I : 6-(1H-pyrazolyl)pyridazine; L II : 3-chloro-6-(1H-pyrazole-1-yl)-pyridazine; L III : 6-(1H-3,5-dimethylpyrazolyl)pyridazine-3-carboxylic ...
    • Electronic and thermal properties of non-stoichiometric and doped cobaltum antimonide 
      Velasco-Soto, Diego; Menéndez Proupin, Eduardo; Realyvazquez-Guevara, Rebeca; Matutes-Aquino, José (Institute of Physics Publishing, 2018)
      The electronic, vibrational and thermal properties of stoichiometric and non-stoichiometric cobalt antimonide CoSb x (x = 2.81, 2.875, and 3) are investigated by means of first principle calculations and thermal measurements. ...
    • Electronic data interchange and enterprise resource planning technology in supply chain contracts 
      Smith, J. Reed; Yost, Jeffrey; López Araya, Harold (Elsevier, 2020)
      We examine a model of supply chain contracting with a purchaser that desires to acquire as much of a product as possible at as low a price as possible. The supplier in our model has private information about its limited ...
    • Electronic excitations of C 60 aggregates 
      Montero Alejo, Ana; Menéndez Proupin, Eduardo; Fuentes, M. E.; Delgado, A.; Montforts, F. P.; Montero Cabrera, Luis; García de la Vega, José M. (2012)
      Excitation properties of the isolated C 60 and (C 60) N model clusters (N = 2, 3, 4, 6 and 13) are studied using an a priori parameterized and self-consistent Hamiltonian, the Complete Neglect of Differential Overlap ...