Browsing A) Producción científica UCSC by Title
Now showing items 1784-1803 of 1816
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Variation in consumer pressure along 2500 km in a major upwelling system: crab predators are more important at higher latitudes
(2019-10-10)Consumer pressure in benthic communities is predicted to be higher at low than at high latitudes, but support for this pattern has been ambiguous, especially for herbivory. To understand large-scale variation in biotic ... -
Variation in habitat use along the freshwater-marine continuum by grey mullet Mugil cephalus at the southern limits of its distribution
(2015)In this study, habitat use by Mugil cephalus was investigated in the waters of the west coast of the North Island of New Zealand by analysing microchemical composition of otoliths (laser-ablation inductively coupled plasma ... -
Variation in tail morphology across urban and forest populations of the crested anole (Anolis cristatellus)
(2019-11)Anolis lizards are well known for their specialist ecomorphs characterized by the convergent evolution of suites of traits linked to the use of particular microhabitats. Many of these same traits evolve rapidly in response ... -
Variation of sterols and fatty acids as an adaptive response to changes in temperature, salinity and pH of a marine fungus Epicoccum nigrum isolated from the Patagonian Fjords
(2014)Se aisló e identificó una cepa hongo marino a partir de muestras de sedimentos obtenidas a partir de un sector de los fiordos patagónicos. La cepa LQRA39-P fue identificado como Epicoccum nigrum utilizando técnicas de ... -
Variation of suction pressure during caisson installation in sand
(2009)This work presents good-quality data on the installation of model suction caissons in dense silica sand. The tests were carried out in a beam centrifuge. The results are coherent with others ... -
Variation of the use of marine resources by Galaxias maculatus in large Chilean rivers
(2018-06)The objective of this study was to assess the frequency of use of marine resources in recruitment of Southern Hemisphere native riverine fish Galaxias maculatus from rivers across a latitudinal gradient. To do this, we ... -
Variational convergence for vector-valued functions and its applications to convex multiobjective optimization
(2013)The aim of this work is to study a notion of variational convergence for vector-valued functions. We show that it is suitable for obtaining existence and stability results in convex multiobjective optimization. We obtain ... -
Variations in soil aggregation, microbial community structure and soil organic matter cycling associated to long-term afforestation and woody encroachment in a Mediterranean alpine ecotone
(2022)Afforestation and subsequent expansion of trees on former grasslands may significantly impact the structure and activity of the soil microbial community, altering soil aggregation and affect its potential to store and ... -
Variations in soil chemical and physical properties explain basin-wide Amazon forest soil carbon concentrations
(2020-02-11)We investigate the edaphic, mineralogical and climatic controls of soil organic carbon (SOC) concentration utilising data from 147 primary forest soils (0–30 cm depth) sampled in eight different countries across the Amazon ... -
Vehicle Following Problem: A Control Approach for Uncertain Systems with Lossy Networks
(2018-09)In the present work, a control system based in Networked Control Systems is proposed, in order to provide a suitable solution to the vehicle following problem. This problem presents the two main obstacles: the first been ... -
Velocity loss thresholds reliably control kinetic and kinematic outputs during free weight resistance training
(2020-09)Exercise velocity and relative velocity loss thresholds (VLTs) are commonly used in velocity-based resistance training. This study aims to quantify the between-day reliability of 10%, 20%, and 30% VLTs on kinetic and ... -
VerTV: Una experiencia de educación en competencia televisiva aplicada a estudiantes chilenos de enseñanza superior
(2018)Las Competencias Mediáticas se han instalado en la discusión internacional como un eje prioritario en el contexto de la formación ciudadana y la educación formal. Gobiernos europeos y latinoamericanos han iniciado acciones ... -
Video Monitoring and Field Measurements of a Rapidly Evolving Coastal System: the River Mouth and Sand Spit of the Mataquito River in Chile
(2014)The understanding of morphological processes controlling the evolution of sand spit reformation after a tsunami impact is a challenging and interesting topic, especially in highly energetic and micro tidal environments. ... -
Virtual Integration of Financial Markets: A Dynamic Correlation Analysis of the Creation of the Latin American Integrated Market
(2015)This paper investigates the role of virtual integration of financial markets on stock market return co-movements. In May of 2011 the Chilean, Colombian, and Peruvian stock markets virtually integrated their stock exchanges ... -
Visual scale and naturalness of roadside vegetation landscape. An exploratory study at Pargua Highway, Puerto Montt – Chile
(2018)Over the last few decades, the Chilean Government has constantly promoted the construction of private highways in order to increase the effectiveness in terms of transportation of goods and people all along the country. ... -
Vitamin C Is an Essential Antioxidant That Enhances Survival of Oxidatively Stressed Human Vascular Endothelial Cells in the Presence of a Vast Molar Excess of Glutathione
(2007)Cellular glutathione levels may exceed vitamin C levels by 10-fold, generating the question about the real antioxidant role that low intracellular concentrations of vitamin C can play in the presence of a vast molar excess ... -
Vitamin D supplementation for the treatment of COVID-19: a living systematic review
(2022)La vitamina D es un nutriente esencial cuya deficiencia se ha asociado con el riesgo de aparición de diversas enfermedades crónicas, como la osteoporosis, la hipertensión arterial, la enfermedad cardiovascular, la diabetes, ... -
Vitamin K for upper gastrointestinal bleeding in patients with liver diseases
(2005-07-20)There is no evidence to establish the beneficial or harmful effects of vitamin K for upper gastrointestinal bleeding in patients with liver diseases Upper gastrointestinal bleeding is one of the most frequent causes of ... -
Vitamina C y Cáncer ¿amigos o enemigos?
(2020-07)La vitamina C es el antioxidante más conocido, debido a su asociación con la prevención del resfrío común. Esta vitamina también participa en la síntesis de colágeno y de catecolaminas, actuando como cofactor de hidrolasas. ... -
Voltage Balancing of a Modular Neutral-Point-Clamped Converter With a Carrier-Based Modulation Scheme
(2018-10)The five-level modular neutral-point-clamped (5L-MNPC) converter is realized by connecting two three-level neutral-point-clamped modules in series. For five-level operation, each dc-bus capacitor voltage of the modular ...