Artículos de revistas: Recent submissions
Now showing items 941-960 of 4968
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(1995)Association constants of alkylpyridine bromide, CnPyB, (methyl, ethyl, propyl, and butyl) to dodecylsulfate micelles has been determined by two methods, ultrafiltration and fluorescence spectroscopy. In the last, the ...
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(1988)Tests performed during long sampling periods with Nuclepore polycarbonate filters have shown that the collection efficiency for aerosols presents a strong time dependence. Significant amounts of electric charge measured ...
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(1974)The Lorentz-Dirac equation of motion for the electron is derived by a new method which makes tedious power series expansions unnecessary. Copyright © 1975 American Institute of Physics.
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(American Chemical Society, 1996)A combined methodology of semiempirical density functional (DFT) and Hartree-Fock (HF) theories is used to analyze the solution-phase proton-transfer (PT) process in the H2O⋯HX (X = F, Cl, and OH) model systems. Gas-phase ...
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(1992)Electrochemical reduction of nicergoline was studied at different pH and concentrations using differential pulse polarography and linear sweep voltammetry. Both techniques reveal that the reduction process occurs with ...
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(1990)Hydroxamic acids were quantified by HPLC in leaves of one-week-old seedlings and in 30 day-old callus tissues of four wheat cultivars. Leaves accumulated preferentially 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA). ...
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(2003)C28H32N2O5. monoclinic, P121/a1 (No. 14), a = 9.5162(6) Å, b= 16.0013(9) Å, c = 17.8001(8)Å,β= 102.883(6)°, V = 2642.2 Å3, Z = 4, Rgt(F) = 0.051, wRref(F2) = 0.171, T= 293 K. © 2014, Oldenbourg Wissenschaftsverlag GmbH, ...
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(Sociedad Chilena de Quimica, 2001)In addition to azorellanol a new diterpenoid 7-deacetylazorellanol, has been isolated from the aerial parts oiLaretia acaulis (Cav.) Gill et Hook (Umbelliferae). Its structure was based on spectroscopic comparison with ...
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(1991)New developments in the continuum representation of solvent effects are presented. General expressions for the Helmholtz free energy of an arbitrary discrete charge distribution placed in spherical and spheroidal (oblate ...
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(1973)We have investigated the susceptibility of the Mattis Hamiltonian by means of Green's-function techniques and using a functional-integral formulation. It turns out that it is not possible to obtain an exact solution for ...
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(1994)Useful energy-density relationships, connected with the embedding of singly charged postive or negative atomic ions in polar solvents, are developed. The insertion of the atomic charged system into the polarizable host is ...
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(Elsevier, 1998)Semiempirical Amsterdam Density Functional (ADF) and ab-initio (B3LYP) density functional theory (DFT) calculations are used to analyze the isomerization reaction MCN ⇔ MNC, for M = H, Li and Na systems. A molecular ...
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(Czech Academy of Sciences, 1997)In olfactometric experiments a wingless adult of Sitobion avenae was attracted by odours of a wingless adult of Rhopalosiphum padi feeding on a wheat plant. When the stimulus consisted of either a wingless R. padi without ...
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(2007)The existence of idempotent elements in plenary train algebras of rank greater than 3, is an open problem to be solved. J. Carlos Gutierrez's results on plenary train algebras in Gutierrez (2000) are based on the underlying ...
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(Blackwell Publishing, 2001)In temperate rainforests on Chiloé Island in southern Chile (42°S), most canopy trees bear fleshy, avian-dispersed propagules, whereas emergent tree species have dry, wind-borne propagules. In the present study, the following ...
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(1992)The crystal and molecular structure of bis-(N-phenyl-1-hydroxy-2-naphthylaldiminate) nickel(II) (1) have been determined by x-ray crystallography. The compound crystallizes in the triclinic space group P1, No. 2 with one ...
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(1995)A Reply to the Comment by James W. Dufty, Roland Stamm, and Bernard Talin. © 1995 The American Physical Society.
