Artículos de revistas: Recent submissions
Now showing items 4701-4720 of 4968
-
(ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES, 2005)C10H16O2, monoclinic, P1211 (no. 4), α = 8.974(2) …, b = 5.933(1) …, c = 8.994(2) …, β = 96.29(3), V = 476.0 …3, Z = 2, Rgt(F) = 0.052, wRobs(F2) = 0.148, T = 293 K.
-
(SPRINGER, 2006-08)Host-guest supramolecular complexes are of special interest for understanding the chemistry in low dimensional spaces. The molecular recognition involved in the formation of such structures sometimes may be a relevant model ...
-
(Pontificia Universidad Católica de Valparaíso -- Chile, 2005-12-15)The present reflection refers to data obtained about the social representations of genomic research and its applications through interviews with legislators and lawyers, biomedical researchers and civilians and the review ...
-
On the variations of electronic chemical potential and chemical hardness induced by solvent effects (ELSEVIER, 2006-12-29)The effects that a polarizable medium exerts on the electronic chemical potential and the chemical hardness of neutral and charged molecules are discussed in detail, using the continuum approach based on the polarizable ...
-
(JOHN WILEY, 2006-03-15)Hydrogen bonding and metallophilic attractions are studied in the model systems: [(AuNH3Cl)(2)], [(AuNH(CH3)(2)Cl)(2)], [{Au-2(mu-SH)(PH2O)(PH2OH}(2)], [(CuNH3Cl)(2)], and [{Cu(NH3)Cl}(4)] at the Hartree-Fock (HF) and ...
-
(BLACKWELL, 2007-12)We describe the geographical variation of corolla and nectar guide size in seven populations of Mimulus luteus (Phrymaceae) in central Chile, and examine whether flower phenotypes associate with taxonomic composition and ...
-
(The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics, 2007-07)We report a comparative study of the magnetic properties of free-standing PdN clusters (2 ≤ N ≤ 21) obtained through two different theoretical approaches that are extensively employed in electronic structure calculations: ...
-
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2006-09)We present a fossil pollen analysis from a swamp forest in the semiarid coast of Chile (32 degrees 05'S; 71 degrees 30'W), at the northern influence zone of southern westerly wind belt. A similar to 10,000 cal yr BP (calendar ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2006-07-13)The new phases alpha-NaSbP2S6 and beta-NaSbP2S6 were synthesized by ceramic and reactive flux methods at 773 K. The structures of alpha-NaSbP2S6 and beta-NaSbP2S6 were determined by the single-crystal X-ray diffraction ...
-
(ELSEVIER, 2006-02)Alzheimer's disease(AD) is a neurodegenerative disorder characterized by the presence of extracellular amyloid deposits, consisting largely of A beta peptide and the presence of intraneuronal aggregates of neurofibillary ...
-
(WILEY-V C H VERLAG GMBH, 2006-01-30)Side-chain-oxidized C-28-sterol 1 and one new pregnane metabolite 2 were isolated from eastern Pacific Muricea spp. The C-24(28)-epoxide functionality is a key intermediate in the C-24-dealkylation mechanism of the conversion ...
-
(TAYLOR & FRANCIS, 2006)Measurements of H-1 and C-13 Nuclear Magnetic Resonance (NMR) for the nanocomposite materials formed by the intercalation of hexadecylamine (HAD) in metal oxides (TiO2, V2O5, CrO3 and MoO3), are reported. The H-1 NMR ...
-
(PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS Volume: 243 Issue: 13 Pages: 3285-3289 Published: NOV 2006, 2006-11)We present a comparative structural -vibrational study of nanostructured systems of V2O5: nano-urchin (VONURs) which are spherical structures composed of a radially oriented array of VOx nanotubes (VOxNTs) with a volumetric ...
-
(BIOMED CENTRAL LTD, 2006-11-23)Background: Expressed sequence tag ( EST) analyses provide a rapid and economical means to identify candidate genes that may be involved in a particular biological process. These ESTs are useful in many Functional Genomics ...
-
(SPRINGER, 2006-11)We consider the 2D Landau Hamiltonian H perturbed by a random alloy-type potential, and investigate the Lifshitz tails, i.e. the asymptotic behavior of the corresponding integrated density of states (IDS) near the edges ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2006-03)A rapid in vitro propagation system leading to formation of shoots from callus, roots, and plantlets was developed for Schizanthus hookeri Gill. (Solanaceae), an endemic Chilean plant. The genus Schizanthus is of particular ...
-
(AMER CHEMICAL SOC, 2006-07-06)This work deals with exploring some empirical scales of nucleophilicity. We have started evaluating the experimental indices of nucleophilicity proposed by Legon and Millen on the basis of the measure of the force constants ...
-
(ELSEVIER, 2006-08-31)A recently introduced empirical nucleophilicity index for a series of n- and pi-nucleophiles was evaluated. The index is based on the frontier molecular orbital information of the nucleophile and its electrophilic partner. ...
-
(ELSEVIER, 2006-03-10)For an important class of organic reactions in which a fragment of the reactants, the leaving group (LG) or nucleofuge (Z), is detached of the substrate bearing the bonding electron pair, the global electrophilicity index ...
-
(SOCIEDAD CHILENA DE QUIMICA, 2006-09)Benzyltetrahydroisoquinoline (BTHIQ) molecules are able to adopt widely differing conformations that depend on the presence or absence of N-substituents. To assess the possible role of BTHIQ conformation on the affinity ...
