Browsing by Title Artículos de revistas
Now showing items 215-234 of 4967
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(2008)The absolute configuration of heterocyclic natural products substituted with two mobile α,β-unsaturated esters was studied using electronic circular dichroism (CD) spectroscopy. The conformational flexibility of the side ...
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(Elsevier, 2014)The UV absorption spectrum of C60 in n-hexane solvent has been revised by means of numerical analysis and time-dependent density functional theory (TDDFT). The absorption spectrum in the range 3–7 eV has been fitted by ...
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(SPRINGER, 2006-11)Understory birds are especially vulnerable to habitat fragmentation because of the reduction in habitat quality and bird movement. We study the separate effects of understory, overstory and landscape on four understory ...
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(2016)The pelagic harpacticoid copepod Microsetella rosea inhabits the cold waters along the temperate southern coast of Chile, where its population biology and ecological role in the neuston are unknown. During a CIMAR 16 Fiordos ...
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(Springer Verlag, 2017)© 2016, Springer-Verlag Berlin Heidelberg. This paper is a pioneering analysis of past climates in southern South America combining multiproxy reconstructions and the state-of-the-art CMIP5/PMIP3 paleoclimatic models to ...
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(Czech Academy of Sciences, 2003)Aphidius ervi Haliday is a parasitoid of natural populations of both Acyrthosiphon pisum (Harris) on alfalfa and Sitobion avenae (Fabricius) on wheat in Chile. In this study the performance of the aphid parasitoid on both ...
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(Ediciones Univ. Concepción, 2015)
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(2013)Background: Among the predictions of the effect of future climate change, the impact of thermal conditions at local levels on the physiological performance of individuals and their acclimation capacities is key to ...
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(2007)Murta (Ugni molinae Turcz.) is an evergreen shrub of the native forest understorey of southern Chile that produces berries which are consumed in the local markets. Because of the natural adaptation of murta to growing under ...
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(Springer Netherlands, 1996)Photoautotrophs can cope with an increase in ultraviolet (UV) irradiance in the aquatic environment, through protection and acclimation mechanisms (i.e. synthesis of UV-absorbing compounds). This capacity has been proven ...
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Accounting for relatedness and spatial structure to improve plant phenotypic selection in the wild (Springer, 2020)Identifying natural selection in wild plant populations is a challenging task, as the reliability of selection coefficients depends, among other factors, on the critical assumption of data independence. While rarely examined, ...
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(Wiley-Liss Inc., 2013)Ethnic and cultural diversity is an increasing reality in the US workplace. The current study highlights the importance of acknowledging the culturally heterogeneous nature of ethnic groups, and the need to focus on social ...
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(1999)Hydroxamic acids, quantified by HPLC, varied in concentration between three cultivars of wheat. Seeds, roots, leaves and the entire plants were analysed separately. No hydroxamic acids were present in seeds throughout the ...
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(1998)In the early fall of 1996, a bloom of the toxic dinoflagellate Alexandrium catenella occurred in a fjord in the southern part of Chile that resulted in very high levels of paralytic shellfish poisoning (PSP) toxicity (up ...
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(Elsevier, 2015)A critical analysis of Chile's National Air Quality Information System(NAQIS) is presented, focusing on particulate matter (PM) measurement. This paper examines the complexity, availability and reliability ofmonitoring ...
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(American Chemical Society, 2017)The nutraceutical properties of Aloe vera have been attributed to a glucomannan known as acemannan. Recently information has been published about the presence of fructans in Aloe vera but there are no publications about ...
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(Sociedad Chilena de Química, 1990-04-16)La bromación del 2,5-dimetoxibenzaldehído en ácido acético dió 4-bromo2,5- dimetoxi-y 2-bromo-3,6-dimetoxibenzaldehído en una razón de 4:1. El primero de éstos sufrió sustituciones nucleofilicas con tioles en DMF ...
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(International Union of Crystallography, 2000)© 2000 International Union of Crystallography.The Ru atom in the title compound, [RuCl(CH3CN)-{P(C6H5)3}2{C6H4(NH)2}]PF6·0.25H2O, has a six-coordinate octahedral geometry, with a trans arrangement of the triphenylphosphine ...
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(MUNKSGAARD INT PUBL LTD, 1990)
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ACh and ATP mediate excitatory transmission in cat carotid identified chemoreceptor units in vitro (Elsevier, 2003)Several molecules have been proposed as excitatory transmitters between glomus (type 1) cells and nerve terminals of petrosal ganglion (PG) neurons in the carotid body (CB). We tested whether ACh and ATP have a role to ...