Browsing by Title Artículos de revistas
Now showing items 1932-1951 of 4968
-
(COLD SPRING HARBOR LAB PRESS, 2010-05-25)Recent studies of the genome architecture of vertebrates have uncovered two unforeseen aspects of its organization. First, large regions of the genome, called gene deserts, are devoid of protein-coding sequences and have ...
-
(ELSEVIER, 2008-08-29)Organochlorine pesticide endosulfan has been detected for the first time by using surface-enhanced Raman scattering (SERS) at trace concentrations. The bis-acridinium dication lucigenine was successfully used as a molecular ...
-
(TAYLOR & FRANCIS, 2006)The functionalization of bentonite by intercalation of surfactants dodecylamine, hexadecylamine, octadecylamine, and the octadecyltrimethylammonium cation is described. Products are characterized by elemental analysis, ...
-
(MDPI, 2021)Gold nanostars (AuNSs) exhibit modulated plasmon resonance and have a high SERS enhancement factor. However, their low colloidal stability limits their biomedical application as a nanomaterial. Cationic beta-cyclodextrin-based ...
-
(Elsevier B.V., 2006-08-22)This work explores the functionalization of an organic–inorganic MoS2 lamellar compound, prepared by a chemical liquid deposition method (CLD), that has an interlamellar distance of 5.2 nm, using clusters of gold ...
-
(Elsevier, 2016)Darwin's naturalization hypothesis suggests that the success of an invasive species will be lower when colonizing communities are formed by phylogenetically related rather than unrelated species due to increased competition. ...
-
(Elsevier Masson SAS, 2016)© 2015 Institut Pasteur.Darwin's naturalization hypothesis suggests that the success of an invasive species will be lower when colonizing communities are formed by phylogenetically related rather than unrelated species due ...
-
(1991)Investigation of five further Chilean Senecio species afforded, in addition to known compounds, four new furoeremophilanes, four eremophilanes, a germacratrienol and an acylpyrrol derivative. Structures were elucidated by ...
-
(1991)In addition to known compounds, a new furoeremophilane and two pairs of epimeric acetals with an eremophilane skeleton have been isolated from Senecio pachyphyllos. The structures were elucidated by high field 1H NMR ...
-
(1992)The aerial parts of Gutierrezia resinosa gave 15 new diterpenes including 12 labdanes and three nerylgeraniol derivatives. The structures were elucidated by high field NMR spectroscopy. © 1992.
-
(2007)The Fukui function, hardness, and other reactivity indices defined in the context of the Kohn-Sham scheme have been further examined following up previous developments. An equation analogue to the Berkowitz-Parr relationship ...
-
(Royal Pharmaceutical Society, 2013-04-11)The chemical study of a dichloromethane extract from Azorella compacta was directed to the isolation of characteristic mulinane and azorellane diterpenoids in order to determine their gastroprotective activity. Methods ...
-
(NLM (Medline), 2019)The chemical reactivity of the first- and second-generation Grubbs catalysts has always been a significant issue in olefin metathesis. In the present work, we study the [2+2] cycloreversion/cycloaddition and the alkylidene ...
-
(1996)The avian nucleus rotundus, a nucleus that appears to be homologous to the inferior1 caudal pulvinar of mammals, is the major target of an ascending retino-tecto-thalamic pathway. Further clarification of the inputs to ...
-
(2005)We evaluated experimentally the effect of a gall-maker insect on vegetative and reproductive traits of the shrub Colliguaja integerrima (Euphorbiaceae). We performed two experiments: (1) a chemical (insecticide) exclusion ...
-
(1998)The gametogenesis of a 2-year-old coho salmon broodstock population cultured in a fish farm in southern Chile was studied. Gonadosomatic index (GSI), microscopic gonadal traits, and serum levels of estradiol-17b(E2), ...
-
(AMER ASSOC IMMUNOLOGISTS, 2009-04-30)The acquired immune response begins with Ag presentation by dendritic cells (DCs) to naive T cells in a heterocellular cell-cell contact-dependent process. Although both DCs and T cells are known to express connexin43, a ...
-
(BLACKWELL PUBLISHING, 2008-09)Aim A major question with regard to the ecology of temperate rain forests in south-central Chile is how pioneer and shade-tolerant tree species coexist in old-growth forests. We explored the correspondence between tree ...
-
(Elsevier, 2020)A pilot study was initiated in 2018 under the Global Atmospheric Passive Sampling (GAPS) Network named GAPS-Megacities. This study included 20 megacities/major cities across the globe with the goal of better understanding ...
-
(AMER PHYSIOLOGICAL SOC, 2006-09)To maintain water balance, nectar-feeding vertebrates oscillate between meeting the challenges of avoiding overhydration and preventing dehydration. To understand how green-backed firecrowns (Sephanoides sephanoides) ...