Browsing by Title Facultad de Ciencias
Now showing items 5434-5453 of 8173
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(Wiley, 2017)Fragile X-associated disorders are a family of genetic conditions resulting from the partial or complete loss of fragile X mental retardation protein (FMRP). Among these disorders, fragile X syndrome (FXS) is the most ...
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(2007)Numerical results for the nuclear Fukui function (NFF) based on a nonintegral number of electrons methodology (NIEM) are reported for a series of simple diatomic molecules. A comparison with those obtained from other ...
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(TAYLOR & FRANCIS LTD, 2010)Impedance spectroscopy and nuclear magnetic resonance (NMR) were used to investigate the mobility of water molecules located in the interlayer space of Hþ – exchanged bentonite clay. The conductivity obtained by ac ...
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(ELSEVIER, 2006-03-20)In this work, the nuclear reactivity indices of density functional theory have been generalized to the spin polarized case and their relationship to electron spin polarized indices has been established. in particular, the ...
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(2007)We propose that a specific property of a chemical fragment, its regional electrophilicity, be taken as defining its nucleofugality index nu(PG) in alpha-elimination reactions. We tabulate this quantity for a series of ...
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(2007)We introduce and test a nucleophilicity index as a new descriptor of chemical reactivity. The index is derived from a perturbation model for the interaction between the nucleophile and a positive test charge. The computational ...
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(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. ...
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(2006)A recently introduced empirical nucleophilicity index for a series of n- and π-nucleophiles was evaluated. The index is based on the frontier molecular orbital information of the nucleophile and its electrophilic partner. ...
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(ASSOC BRAS DIVULG CIENTIFICA, FACULDADE MEDICINA, 2006-09)
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(Universidad Nacional Autónoma de México, 2017)Callyntra Solier, 1836 es un género endémico de Chile y Argentina que contiene 22 especies descritas. Con base en ejemplares adultos y unhuevo recolectados en la costa de Chile central, se describe C. tortuosa sp. nov. Se ...
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(Universidad de Chile, 2018-07)La estructura del esternón de las aves ha sido históricamente un tema importante en la discusión del origen y la mecánica del vuelo. A pesar de esto, los estudios enfocados en su osificación son muy escasos, por lo que el ...
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(Universidad de Chile, 2017)
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(Universidad de Chile, 2011)El mitógeno Sonic hedgehog (Shh) participa en el desarrollo del Sistema nervioso Central (SNC), jugando un rol clave en ia proliferación de progenitores neurales, entre otros. C-myc es un potente proto-oncogen y regulador ...
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(Univ Valparaíso, 2015)We report the mass stranding of 46 false killer whales in the Strait of Magellan in February 2013. We present observation-based information about body size, sex, dental formula and necropsies. Sexual dimorphism in body ...
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(Universidad de Chile., 2018-01)La condición basal para synapsida es tener un astrágalo que en su cara posterior articula con la cara anterior del calcáneo, ambos elementos en el mismo plano del eje dorso-vental. Además, presentan un elemento basipodial ...
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(Universidad de Chile, 1993)
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(Universidad de Chile, 1993)
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(Universidad de Chile, 2019)Los aisladores topológicos a grandes rasgos son aisladores en el bulto y presentan estados de borde metálicos que están protegidos por alguna simetría del sistema, mediciones ARPES han logrado detectar estos estados, ...
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(Universidad de Chile, 2010)