1,002 research outputs found
Combined Effects of the North Atlantic Oscillation and the Arctic Oscillation on Sea Surface Temperature in the Alborán Sea
We explored the possible effects of the North Atlantic Oscillation (NAO) and Arctic Oscillation (AO) on interannual sea
surface temperature (SST) variations in the Albora´n Sea, both separately and combined. The probability of observing mean
annual SST values higher than average was related to NAO and AO values of the previous year. The effect of NAO on SST
was negative, while that of AO was positive. The pure effects of NAO and AO on SST are obscuring each other, due to the
positive correlation between them. When decomposing SST, NAO and AO in seasonal values, we found that variation in
mean annual SST and mean winter SST was significantly related to the mean autumn NAO of the previous year, while mean
summer SST was related to mean autumn AO of the previous year. The one year delay in the effect of the NAO and AO on
the SST could be partially related to the amount of accumulated snow, as we found a significant correlation between the
total snow in the North Albora´n watershed for a year with the annual average SST of the subsequent year. A positive AO
implies a colder atmosphere in the Polar Regions, which could favour occasional cold waves over the Iberian Peninsula
which, when coupled with precipitations favoured by a negative NAO, may result in snow precipitation. This snow may be
accumulated in the high peaks and melt down in spring-summer of the following year, which consequently increases the
runoff of freshwater to the sea, which in turn causes a diminution of sea surface salinity and density, and blocks the local
upwelling of colder water, resulting in a higher SST.CGL2009-11316 (Ministerio de Ciencia e Innovación, Spain, and FEDER
Introduction : analysing English syntax past and present
This book is an exploration of categories, constructions, and change in English syntax. A great many books are published on the syntax of English, both monographs and edited volumes, and yet another may seem unnecessary. However, we felt more than justified in adding to the sizeable literature here for two reasons. The first, to borrow from Richard M. Hogg and David Denison’s justification for A History of the English Language, is that ‘one of the beauties of the language is its ability to show continuous change and flexibility while in some sense remaining the same
A Rapid Road to Employment?: The Impacts of a Bus Rapid Transit System in Lima
Despite the growing interest in and proliferation of Bus Rapid Transit (BRT) systems around the world, their causal impacts on labor market outcomes remain unexplored. Reduced travel times for those who live near BRT stations or near feeder lines, may increase access to a wider array of job opportunities, potentially leading to increased rates of employment, access to higher quality (or formal) jobs, and increased labor hours and earnings. This paper assesses the effects of the Metropolitano, a BRT system in Lima (Peru), on individual-level job market outcomes. We rely on a difference-in-differences empirical strategy, based on comparing individuals who live close to the BRT system with a comparison group that lives farther from the system, before and after the system started to operate. We find large impacts on employment, hours worked and labor earnings for those individuals close to the BRT stations, but not for those who live close to the feeder lines. Despite the potential to connect poor populations, we find no evidence of impacts for populations living in lower income areas
Design and Validation of Transversal Competences Assessment Instrument (TCAI) in Compulsory Secondary Education
The basic competences (such as Information Acquisition and Management; Understanding and Expression of Information and Emotions; Competence to Do and Undertake; Competence to Live Together; and Competence to Be) are necessary to achieve adequate personal, social and professional development. This study develops and validates, through Confirmatory Factor Analysis, an instrument for assessing them. Data were collected from 751 secondary students, with ages ranging from 11 to 18. The results confirm the structure of the instrument, comprising five independent scales. The instrument is valid for its application, either as a whole or separately.Las competencias básicas (tales como Búsqueda y gestión de la información; Comprensión y expresión de información y emociones; Competencia para hacer y emprender; Competencia para vivir juntos y Competencia para ser) son necesarias para un adecuado desarrollo personal, social y profesional. Este estudio diseña y valida, con Análisis Factorial Confirmatorio, un instrumento para evaluarlas. Se recopilaron datos de 751 estudiantes de Secundaria, con edades comprendidas entre 11 y 18 años. Los resultados confirman la estructura del instrumento, compuesto por cinco escalas independientes. El instrumento es válido para su aplicación de manera conjunta o separada
Nutritional intervention in early life to manipulate rumen microbial colonization and methane output by kid goats post-weaning
Freeze desalination by the integration of falling film and block freeze concentration techniques
Block and falling film freeze concentration are two technologies that separate water by freezing,with the
potential to desalinate seawater. In this study, the
integration of two freeze concentration techniques as
an alternative to obtain potable water was analysed.
Water with 0.5%–8% NaCl was freeze-concentrated by
the falling film technique. The ice from each stage was fractionally thawed to recover the solids retained inPostprint (updated version
Influencia de los parámetros nutricionalesen cirugÃa de cadera
Bajo la hipótesis de que los parámetros nutricionales influyen en el desarrollo perioperatorio
de la cirugÃa de cadera realizamos un estudio prospectivo observacional de tipo clÃnico
sobre 100 pacientes con una edad media de 76 años. Realizamos una evaluación clÃnica al ingreso:
talla, peso, pliegue cutáneo, circunferencia braquial y muscular. Medición de proteÃnas
plasmáticas y linfocitos totales al ingreso, en el postoperatorio y cada 7 dÃas. Definimos los pacientes
según los valores nutricionales analÃticos y clÃnicos. El 51% de nuestros pacientes presentaban
desnutrición caloricoproteica. La media transfusional en malnutridos fue 600 c.c. frente a
350 c.c. del grupo nutrido (p < 0,05). El 73% de las complicaciones se presentaron en pacientes
malnutridos. No hallamos diferencias en los perÃodos de sedestación y deambulación, aunque sÃ
en la estancia hospitalaria, 15 dÃas frente a 18,5 dÃas (p < 0,01). La prealbúmina mostró variaciones
de forma más precoz ante el acto quirúrgico.A prospective observation was conducted with the hypothesis that the nutritional
situation has influence in postoperative development of hip surgery [n = 100; age 76 years
(55-95)]. A nutritional evaluation was performed before surgery through the evolution of height,
body weight, skin fold and braquial and muscular circunference. Serie proteins and lymphocytes
levels were measured during hospital admission, in postoperative and each seven days. A 51% of patients
showed protein-energy malnutrition (PEM). Transfusional haematic requirements were 600 c c .
in malnutrition patients and 350 c.c. in the rest (p < 0.05). Complications appeared in PEM patients
in 73% cases. The hospital stay was longer in those patients who presented PEM upon admittance
(p < 0.01). Postoperatively, the prealbumin was the protein whose serie level had faster changes
Multiferroic behavior in the new double-perovskite LuMnCoO
We present a new member of the multiferroic oxides, LuMnCoO, which we
have investigated using X-ray diffraction, neutron diffraction, specific heat,
magnetization, electric polarization, and dielectric constant measurements.
This material possesses an electric polarization strongly coupled to a net
magnetization below 35 K, despite the antiferromagnetic ordering of the Mn and Co spins in an configuration along the c-direction. We discuss the magnetic order
in terms of a condensation of domain boundaries between and
ferromagnetic domains, with each domain boundary
producing a net electric polarization due to spatial inversion symmetry
breaking. In an applied magnetic field the domain boundaries slide, controlling
the size of the net magnetization, electric polarization, and magnetoelectric
coupling
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