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Now showing items 1778-1797 of 2951
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Levels and pedogeochemical mapping of lead and chromium in soils of Barcelona province (NE Spain)
(2011)n this paper an analysis of the spatial distribution of Cr and Pb in topsoils in Barcelona province using 319 samples (approximately in a regular 5 km spaced grid) is presented. Ordinary kriging (OK) maps are obtained after ... -
Levels and spatial distribution of polycyclic aromatic hydrocarbons (PAHs) in sediments from Lenga Estuary, central Chile
(2011)The Lenga Estuary is a small brackish wetland located southwest of San Vicente Bay, Region VIII, Chile. Surface sediment from nine sites in the estuary were analysed for PAHs and compared to Sediment Quality Guidelines ... -
Levels of Persistent Organic Pollutants (POPs) in sediments from Lenga estuary, central Chile
(2014)Superficial sediments from Lenga estuary in the VIII region of central Chile were analysed for Polychlorinated Biphenyls (PCBs) and Hexachlorobenzene (HCB). Organic carbon (OC) analysis was also performed and the statistical ... -
Lexico-grammatical preferences of primary school novice teachers from the province of Concepción
(2019-11)According to the SIMCE results, Chilean students do not reach the levels set by MINEDUC (B2 according to the CEFR), especially in the public system, and this may be related to the way students are being taught. Despite ... -
La ley como fuente de las obligaciones modales. El caso de la Ley Nº 13.080
(2020)En el presente artículo se estudia la ley como fuente del modo. Para comprender mejor nuestro vigente sistema de fuentes de las obligaciones. en primer lugar, se hace un recorrido histórico relativo a las mismas, lo que ... -
La ley de reforma constitucional N° 20725, que modificó el artículo 47 de la Constitución Política del Estado, eliminando el guarismo 120 de la conformación del número de diputados, es un instrumento de robustecimiento de nuestro régimen democrático
(2016)La reforma al artículo 47 inciso primero de la Constitución Política de la República en la ley N° 20.725 que elimino el guarismo 120 en la conformación del número de diputados, que crea una nueva institucionalidad en cuanto ... -
La “ley natural” del amor en el Cantar de los Cantares
(2007)Las páginas que siguen pretenden hacer un modesto aporte al tema de la ley natural desde la óptica del libro bíblico veterotestamentario Cantar de los Cantares, que en su conjunto nos habla del tema del amor humano. Se ... -
LHS 1815b: The First Thick-disk Planet Detected by TESS
(2020-04)We report the first discovery of a thick-disk planet, LHS 1815b (TOI-704b, TIC 260004324), detected in the Transiting Exoplanet Survey Satellite (TESS) survey. LHS 1815b transits a bright (V = 12.19 mag, K = 7.99 mag) and ... -
El libre albedrio en Santo Tomas de Aquino
(2018-10)En el desarrollo del libre albedrío es posible encontrar diversos autores, siendo Santo Tomás uno de los más destacados, ya que desarrolla el tema de forma sistemática, incluyendo tanto aspectos filosóficos como teológicos. ... -
Los libros de texto y sus discursos: representaciones de las mujeres en la historia escolar chilena (13.000 a. C. - 1810)
(2022)En esta investigación se analizan las representaciones de las mujeres presentes en los manuales que abordan la historia de Chile desde el año 13.000 a. C. (datación de los hallazgos arqueológicos de Monteverde) hasta 1810 ... -
Licitaciones públicas y libre competencia, desde la perspectiva de CENABAST
(2016)En el presente trabajo trataré someramente sobre la libre competencia y sus beneficios, así como de las conductas que atentan contra la libre competencia en los mercados, con un breve énfasis en la manipulación de licitaciones ... -
Limiting factors to encapsulation: the combined effects of dissolved protein and oxygen availability on embryonic growth and survival of species with contrasting feeding strategies
(2009)Encapsulation is a common strategy among marine invertebrate species. It has been shown that oxygen and food availability independently constrain embryo development during intracapsular development. However, it is unclear ... -
Line-by-line Velocity Measurements: an Outlier-resistant Method for Precision Velocimetry
(2022)We present a new algorithm for precision radial velocity (pRV) measurements, a line-by-line (LBL) approach designed to handle outlying spectral information in a simple but efficient manner. The effectiveness of the LBL ... -
Linear Complementarity Problems over Symmetric Cones: Characterization of Q b -transformations and Existence Results
(2013)This paper is devoted to the study of the symmetric cone linear complementarity problem (SCLCP). Specifically, our aim is to characterize the class of linear transformations for which the SCLCP has always a nonempty and ... -
Linear type global centers of linear systems with cubic homogeneous nonlinearities
(2019-07-19)The notion of center goes back to Poincar´e and Dulac, see [10, 6]. They defined a center for a vector field on the real plane as a singular point having a neighborhood filled of periodic orbits with the exception of the ... -
Linkages between soil carbon, soil fertility and nitrogen fixation in Acacia senegal plantations of varying age in Sudan
(2018-07)Background Over the last decades sub-Saharan Africa has experienced severe land degradation and food security challenges linked to loss of soil fertility and soil organic matter (SOM), recurrent drought and increasing ... -
Linking ecological science with management outcomes on New Zealand's longest river
(2019-06)New Zealand's Waikato River has had a short but intense history of development, primarily through land‐use change and flow regulation in the upper river, and in the lower river through flood control works, non‐native species ... -
Linking optical and chemical signatures of dissolved organic matter in the southern Argentine shelf: Distribution and bioavailability
(2019-07)Fluorescence spectroscopy is commonly used to investigate the distribution and dynamics of dissolved organic matter (DOM) in marine systems. However, the direct comparison with chemical signatures is essential to substantiate ... -
Liquidación de empresas y personas deudoras: ley 20.720 un análisis comparativo
(2016)Del cumplimiento de sus obligaciones el deudor responde con todos sus bienes presentes y futuros, así consagra el artículo Art. 2465 del Código Civil el principio de prenda general. Sin embargo cuando el patrimonio del ... -
Lirquén y su Puerto (1950 – 2000): Memoria, territorio e identidad de los trabajadores portuarios
(2021-01-24)Esta investigación se centrara en el pueblo de Lirquén, en donde se ubica el Puerto Lirquén, no obstante el eje central de este trabajo serán los trabajadores portuarios de los cuales se extraerá la mayor parte de la ...