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en línea para Revistas Científicas de América Latina,
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ISSN: 2310-2799

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546,196 artículos

Año: 2019
ISSN: 2386-7159, 0214-8188
Pellissa Prades, Gemma
Universitat de València
A través d’una comparació entre les proses mitològiques de Corella i les Transformacions de Francesc Alegre l’autora mostra que Alegre utilitza materials provinents de les Lamentacions i del Parlament en casa de Berenguer Mercader de Joan Roís de Corella per a la traducció catalana medieval de les Metamorfosis d’Ovidi, escrita entre 1472 i 1482, aproximadament. Així mateix, s’apunten indicis pel que fa a la influència del Raonament de Telamó i Ulisses a les Transformacions. Així, malgrat que Alegre parteix del poema llatí, completa la traducció amb la integració  d’altres fonts que decideix no explicitar (Bonsignori, Corella). Finalment, es detecta un indici que apuntaria al fet que Corella pogués haver consultat l’adaptació italiana de Bonsignori o una versió d’Ovidi que en depengués.
Año: 2019
ISSN: 2386-7159, 0214-8188
Feliu, Francesc; Ferrer, Joan
Universitat de València
Les cartes de poblament d’època moderna, molt abundants al País Valencià sobretot com a conseqüència de les repoblacions que seguiren a l’expulsió dels moriscos (1609), no han estat gens estudiades fins ara des del punt de vista lingüístic, en bona mesura perquè fins fa pocs anys no disposàvem d’un repertori significatiu d’aquesta mena de documents. Es tracta de textos de registre jurídic que incidien molt directament en la vida d’una part important de la població —també, indirectament, en la idea que la gent pogués tenir de la llengua autòctona. Aquest treball intenta fer una primera aproximació a l’estudi de les cartes de poblament valencianes del segle XVII, valorant el grau de persistència de l’ús del valencià en aquest textos, i també dels models lingüístics tradicionals.
Año: 2019
ISSN: 2386-7159, 0214-8188
Garachana, Mar
Universitat de València
L’objectiu d’aquest treball és analitzar l’emergència del MD no obstant això en català. Aquesta evolució permet posar en relleu que no tot canvi en la gramàtica ha de ser estudiat des de la Teoria de la Gramaticalització, alhora que fa palesa la necessitat d’analitzar els canvis sintàctics en el context social i cultural en què es van donar. En el cas de no obstant això, l’estudi minuciós de les seves primeres ocurrències en català evidencia que, lluny de ser el resultat d’una gramaticalització, aquest marcador va sorgir com a resultat del calc gramatical d’una partícula originada en el llatí medieval.
Año: 2019
ISSN: 2395-8812, 0187-6236
Stella, Juan M.; Gordon, Paola L.
Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México
A research was conducted for evaluating an alternative management under evaporation stress of the reservoir El Cuchillo, which supplies water to the Metropolitan Area of Monterrey (AMM, Spanish acronym) located in the state of Nuevo León, Mexico. The surface sources of water supplies for the AMM come from three reservoirs: La Boca, El Cuchillo and Cerro Prieto, which are integrated in a single system and exchange water with two reservoirs, Marte R. Gómez and Las Blancas. Due to high temperatures during the whole year, especially in the summer, as well as the big surface area of the pool, El Cuchillo is a big source of water loss by evaporation. This research conducted an analysis to achieve alternative scenarios for water management in reservoirs facing this problem, by applying the model HEC-ResSim. This model, created by the US Army Corps of Engineers, has a multi reservoir simulator and can simulate water resource systems from many sources. The present study used monthly observed data from 1994 to 2014 of reservoir volume, inflow and diversion; in addition, hydraulic data from the reservoirs were used to develop the numerical model. The results show that it is possible to increase the reservoir diversion and obtain 50 % more water for the scenario 1 and 70 % more for the scenario 2 during a period of 20 years from 1994 to 2014, if these cycles of evaporation are taking in consideration.
Año: 2019
ISSN: 2395-8812, 0187-6236
Nascimento Júnior, Lindberg; Rodrigues Silvestre, Miriam; Sant'Anna Neto, João Lima
Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México
In order to detect areas and periods of rainfall reduction and increase in Paraná State, south of Brazil, the objective of this manuscript is to analyze, spatially and temporally, rainfall trends from 1976 to 2011. Monthly data were collected on accumulated rainfall (mm) from 63 pluviometric stations distributed throughout the study area. The data were grouped into quarterly (autumn, winter, spring, and summer), seasonal (dry and rainy season), and annual values. All values were evaluated for homogeneity and trends using the Mann-Whitney-Pettitt, Mann-Kendall, and linear regression tests. The results indicate a rainfall transition detected in the period 1991 to 1999, with a maximum change point in 1993. The trends indicate an average increase of 4.03 mm in the rainy season, mainly in the sectors that are predominately subtropical and coastal climates. These results corroborate in a better explanation rainfall patterns and variability in the tropical regions and the Southern Hemisphere, and imply a moderate process of rainfall tropicalization in the subtropical climate of Paraná State.
Año: 2019
ISSN: 2395-8812, 0187-6236
Nayak, Sridhara; Takemi, Tetsuya
Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México
Recent IPCC reports suggest that the world is getting warmer. Consequently, the concentration of atmospheric water vapor, which determines the water for precipitation, is substantially increasing in accordance with the Clausius-Clapeyron (CC) relationship, which establishes that water vapor in the atmosphere increases at a rate of 7% per ºC of warming. In this study, we explored the relationship between extreme precipitable water events and temperature over the whole globe, its two hemispheres, and the 5º latitudinal bands by using NCEP/NCAR and MERRA-2 reanalysis data for 1980-2017. Our results indicate that extreme precipitable water events linked to temperature basically follow the CC relationship at temperatures roughly below 5 ºC and the sub-CC relationship for temperatures above ~5 ºC, globally and in both hemispheres. The relationship between extreme precipitable water events and temperature over latitudinal regions is not uniform and varies regionally. Our results further indicate that the increasing rate of extreme precipitable water events is higher in the tropics and mid-latitudes of the southern hemisphere than in the northern hemisphere. This study shows the usefulness of the principle of Clausius-Clapeyron relationship to explain extreme precipitable water events linked to temperature.
Año: 2019
ISSN: 2659-5230
Mantas Fernández, Rafael; Amorós i Albareda, Damiá
Universidad Pablo de Olavide
The creation of new exhibition spaces and the improvement of museum facilities represents a great opportunity for the realization of new studies regarding their art inventories and catalogs. In this way, the review and updating of existing information sheds new light on the works, including interesting developments such as the designation of works which until now were cataloged as anonymous. Thanks to the completion of these projects, knowledge surrounding the canvas Saint Anthony of Padua with the Child in the Real Monastery of Poblet Museum (Tarragona) has been extended, attributing its authorship to the painter Sebastián Martínez Domedel. Presented here is an unpublished work that is included in this XVII century artist’s catalog.
Año: 2019
ISSN: 2395-8812, 0187-6236
Shao, Feng; Wu, Haitang; Li, Guo; Sun, Fengbin; Yu, Lu; Zhang, Yinke; Dong, Li; Bao, Zhiyi
Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México
Expressways in China are developing rapidly, as is traffic pollution, which is one of the major sources of urban pollution. In this study, we chose the greenbelt in the idle zone near the Lin’an toll station along the Hang Rui expressway as our sampling area. Five points in the sampling area along Qianjin road were marked vertically at distances of 0, 15, 30, 45 and 60 m to monitor concentrations of PM2.5 and learn the varying patterns of these concentrations and influencing factors. The results showed that in spring (March, April and May), the average PM2.5 concentrations in the greenbelt were 32.56 ± 22.51, 77.71 ± 32.11 and 64.15 ± 29.00 μg m–3, respectively. The ranking of concentrations at different monitoring points in the same period was 0 > 15 > 60 > 30 > 45 m. The average concentrations in winter (November and December 2017, and February 2018) were 33.56 ± 9.34, 60.78 ± 17.67 and 124.71 ± 43.19 μg m–3, respectively. However, the ranking of concentrations at different monitoring points in the same period revealed some differences. Except at 0 m, the concentrations of PM2.5 in the other four positions were higher in winter than in spring. The reduction rate at 45 m reached its maximum in both spring and winter. PM2.5 concentrations were significantly correlated with meteorological factors, the structure of the plant community and traffic flow. PM2.5 concentrations were negatively correlated with temperature, positively correlated with relative humidity and was not significantly correlated with wind speed. The correlations of PM2.5 concentrations with the canopy density and degree of porosity differed greatly due to different seasons, and concentrations were significantly correlated with the amount of traffic flow, especially when there were large trucks. 
Año: 2019
ISSN: 2395-8812, 0187-6236
Srivastava, Sambhawika; Kumar, Manish; Singh, Ram S.; Rai, Birendra N.; Mall, Rajesh K.; Banerjee, Tirthankar
Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México
The first ever long-term measurement of black carbon (BC) aerosols over an urban location at the central Indo-Gangetic Plain (IGP) is presented. Both short- and long-term variations in BC during the period 2009-2013 are discussed with specific emphasis on variation in BC sources, meteorology, trend and possible transport pathways across the IGP. High BC mass loading was noted with a 5-yr composite mean (± SD) of 11.8 (± 8.6) µg m–3, having strong and consistent seasonal variations (median: 8.8; range: 1.4-48.0 µg m–3). Winter (21.5 ± 9.9µ gm–3) and post-monsoon (17.4 ± 10.2 µg m–3) specific rises in BC mass were consistent with the increase in household emissions, and from agricultural residue burning. The BC mass concentration was mostly influenced by local sources, while sudden change in BC was consistent with the change in Delta-C, indicating emissions primarily from biomass burning. Beside sources, atmospheric boundary layer height was noted to considerably influence short-term variations in BC concentration. A statistically significant monotonic increasing trend in BC concentration (0.9 µg m–3 yr–1) was computed along with its 95% uncertainty bounds (0.38-1.52 µ gm–3 yr–1). Increase in BC concentration was consistent with a rise in BC sources across the IGP and over India. Furthermore, clear evidence of local and regional scale transport of BC aerosols was found using the particle Lagrangian model.
Año: 2019
ISSN: 2395-8812, 0187-6236
Boucefiane, Abdelkader; Meddi, Mohamed
Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México
A regional statistical analysis has been established for an improved estimate of extreme frequency precipitation in the steppe area of northwestern Algeria. This analysis made it possible to determine three homogeneous regions by using methods based on statistical procedures, such as the analysis of the ascendant hierarchical classification and the L-moments method. The regions thus defined accurately reflect the climatological differences and specific characters influencing precipitation patterns in the study area. The generalized extreme value (GEV) distribution has been identified as the most appropriate distribution for modeling annual maximum daily rainfall quantiles according to the L-moments ratio plot and fit-quality tests. Rainfall indices combined with the regional growth curves can evaluate in a reasonable way the maximum rainfall quantiles at the stations by using the mean maximum precipitations of the observation series. The regional approach has considerably reduced the differences caused by the disparity of the values taken by the shape parameter of the GEV distribution as a function of the observation sites, and the estimation of high quantiles becomes more spatially consistent in a region. Different forms of growth curves are characteristic for the three regions. The error reflected by the bias and root mean square error (RMSE) are below 16 and 25%, respectively, for a 100-year return period. The study provides an assessment of the maximum daily rainfalls that can be useful in the study of floods and the design of hydrotechnical works.

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