Browsing by Title Facultad de Ciencias
Now showing items 3954-3973 of 8173
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(Universidad de Chile, 1992)En esta tesis propongo un modelo gr¿fico que explora el efecto de la distancia entre las plantas madres sobre el espaciamiento entre las plántulas y sus madres, en presencia y en ausencia de granivoria. El supuesto ...
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(1995)Comparative studies of granivory intensity across different arid and semi‐and regions of the world have assumed homogeneity of conditions over large geographical areas, despite the existence of evident heterogeneities at ...
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(MDPI, 2020)Adsorption technologies are a focus of interest for the removal of pollutants in water treatment systems. These removal methods offer several design, operation and efficiency advantages over other wastewater remediation ...
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(1982)A study of ternary complex formation between nickel, pyridine and picrate ion has been made. The metal - pyridine complex reacts with picrate to give an insoluble, stable, green precipitate. Conditions of formation, ...
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(Universidad de Chile, 1990)La Teoría de la Gravitación de Lovelock [1] es la generalización natural de la Teoría de de Relatividad de Einstein, valida para 4 dimensiones, a espacio-tiempos Riemannianos de cualquiera dimensión. Er este trabajo se ...
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(Springer, 2012)Purpose Recent reports discuss the altered bone homeostasis in cigarette smokers, being a risk factor for osteoporosis and negatively influencing fracture healing. Cigarette smoke is known to induce oxidative stress in ...
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(1987)The ground state potential energy curves of alkali (LiH to CsH) and alkaline-earth monohydrides (BeH to BaH) have been calculated. A pseudopotential formalism including a core-polarization potential has been used. For the ...
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(Universidad Autonoma de Madrid, 2007)Consider a finite group G acting on a Riemann surface S, and the associated branched Galois cover πG : S → Y = S/G. We introduce the concept of geometric signature for the action of G, and we show that it captures much ...
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(Springer, 2015)We describe the action of the full automorphisms group on the Fermat curve of degree N. For N prime, we obtain the group algebra decomposition of the corresponding Jacobian variety.
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(ELSEVIER, 2006-05-10)We propose and test an empirical nucleofugality index to rank the leaving group ability of a series of molecular fragments present in nucleophilic substitution reactions of carbonyl and thiocarbonyl derivatives. The ...
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(Taylor & Francis, 2015)The main goal of this study was to find bacterial isolates with the ability to inhibit the growth of the fish pathogens Aeromonas hydrophila, Vibrio anguillarum, and Flavobacterium psychrophilum and to inhibit the blockage ...
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(BIRKHAUSER VERLAG AG, 2008-09)We prove that, for all α > 0, every finitely generated group of C1+α diffeomorphisms of the interval with sub-exponential growth is almost nilpotent. Consequently, there is no group of C1+α interval diffeomorphisms having ...
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(The Royal Society of Chemistry, 2018-06-28)We studied the soft landing of Ni atoms on a previously damaged graphene sheet by means of molecular dynamics simulations. We found a monotonic decrease of the cluster frequency as a function of its size, but few big ...
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(1997)Seedlings of nine southern Chilean trees were grown at three nutrient supply rates, to examine the roles of growth rate, biomass distribution and nutrient use traits in determining species natural distributions on resource ...
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(Universidad de Chile, 2008)Hasta ahora, los grupos ordenables han sido mayormente estudiados usando métodos puramente algebraicos. Sin embargo, una parte substancial de la teoría debería tener una contraparte dinámica natural. En este trabajo hacemos ...
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(1991)The investigation of three Stevia species afforded a large variety of known sesquiterpene lactones as well as one new guaianolide, two known longipinene derivatives, two ent-labdanes and several other common compounds. © 1991.
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(Hüthig- Heidelberg, 1988)Al/S dem Cllloroform-Exlrakl da oberirdisclren Teile I'on Cemaurea clrilellsis IIIld Celltaurea floccosa II'I/rden ZII-ei hekallll/e Guaiallolit/e i.wlierr, 811-aCCIOXI'l/elrl'dmcoslu.\· laclO/I I 11I11/ cy"aropicri" 2. ...
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(Universidad de Chile, 2008)Regeneration of lenga (the main timber resource of south of Chile and Argentina) is presumed to be hampered by browsing by guanacos. Thus, in order to elucidaie the factors that affect herbivory on lenga, in this work ...
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(Wiley, 2021)There has been much recent interest in the concept of rewilding as a tool for nature conservation, but also confusion over the idea, which has limited its utility.We developed a unifying definition and 10 guiding principles ...
