Desarrollo de las competencias básicas de los estudiantes de Educación Superior mediante la e-Evaluación orientada al aprendizaje.

La e-Evaluación orientada al aprendizaje (e-EOA) es un proceso de aprendizaje, mediado por las TIC, que promueve el desarrollo de competencias útiles para el presente académico y el futuro laboral de los estudiantes. En esta investigación cuasi-experimental, con diseño pretest-postest con grupos experimentales y de control, consideramos que las actuaciones de la e-EOA (VI) favorecen un mayor desarrollo de competencias (VD). Los resultados revelan que en los grupos experimentales se mejora el nivel competencial y existen diferencias significativas entre su pretest-postest. Además, se comprueba que las competencias que mejoran son coherentes con la teoría planteada (creatividad, resolución de problemas…)

Student voice in learning assessment: a pathway not yet developed at university

During 2009/2010, the current research was conducted with the aim of analysing student and teaching staff on regarding student participation in assessment. A content analysis of 76 subject outlines was carried out, and then 40 member of the teaching staff and 614 university students were surveyed. The results of the content analysis prove there is a shortage of information about and programming for student participation in assessment

Using Direct Current Potential Drop Technique to Estimate Fatigue Crack Growth Rates in Solid Bar Specimens under Environmental Assisted Fatigue in Simulated Pressurized Water Reactor Conditions

ABSTRACT: The direct current potential drop (DCPD) technique may be used in crack propagation tests to measure the crack growth rate (CGR). Potential probes attached to the specimen allow the variation of the crack length to be estimated. In this research, the DCPD technique using one single potential probe was applied to solid bar specimens (i.e., without any initial notch or crack) subjected to low-cycle fatigue testing in a simulated pressurized water reactor (PWR) environment. This particular analysis had two associated difficulties, the first one being the fact that crack initiation sites are not known beforehand, and the second one consisting in the experimental difficulties and conditioning factors associated with the simulation of the PWR environment. Nine solid bar specimens were tested to fatigue failure under different strain amplitudes and frequencies, while also measuring the corresponding DCPD signal during the fatigue process. It was observed that the initiation of multiple cracks was detected by the DCPD measurements. Moreover, as fatigue continued, one of the cracks became dominant and progressed to cause the specimen failure. The DCPD technique allowed the average CGR of the dominant crack to be estimated. Finally, the obtained average CGRs were validated by comparing them with average CGRs derived from striation spacing measurements, obtained from scanning electron microscopy (SEM) and from literature values gathered in the NUREG/CR-6909 document.This project received funding from the Euratom Research and Training Programme 2014–2018 under Grant Agreement No. 662320 (INCEFA-PLUS) and Euratom Research & Training Programme 2019–2020 under grant agreement No. 945300 (INCEFA-SCALE)

Microbial quality and yeast population dynamics in cracked green table olives' fermentations

Cracked green table olives, from the Manzanilla variety, are a fermented food produced and consumed in Portugal. The objective of the present work was to study the microbiological characteristics and yeast population evolution during the fermentation of cracked green olives. The predominant microorganisms were yeasts while lactic acid bacteria were not detected and a clear decrease of the mould population was observed. At the end of the fermentations, no viable counts of Enterobacteriaceae were found. Yeast isolates were identified by the 5.8S rRNA-ITS region restriction analysis and by sequencing the D1/D2 region of the 26S rRNA gene. During the initial phases of the fermentations a great diversity of yeasts was observed. However, as the processes evolved the biodiversity decreased with the fermentative yeasts Citeromyces matritensis, Zygotorulaspora mrakii and Saccharomyces cerevisiae becoming the dominant species. The presence of these fermentative yeasts at the end of the production process is associated to a risk of spoilage. The results obtained represent a first attempt towards the comprehension of the microbiota of this type of “Natural olives” that constitute an important component of the Mediterranean diet

Controlled crystallization of Mn12 single-molecule magnets by compressed CO2 and its influence on the magnetization relaxation

6 pages, 6 figures, 2 tables.Micro- and sub-micro particles of complex [Mn12O12(O2CC6H5)16(H2O)4] ( 1) with controlled size and polymorphism have been prepared by dense-gas crystallization techniques, showing a remarkable particle size influence on the magnetization relaxation rates.This work was supported by DGI (Spain) under projects MAT2002-0043 and MAT2003-04699 and by the European Commission under the NoE MAGMANET (Contract NMP3- CT-2005-515767) and QUEMOLNA Marie Curie RTN (Contract MRTN-CT-2003-5044880). Javier Campo and Nora Ventosa thank the Ramon y Cajal Program of Ministerio de Educación y Tecnología (Spain) for their contracts. Maria Muntó thanks the Consejo Superior de Investigaciones Científicas (CSIC) for her PhD bursary and Jordi Gómez- Segura thanks the European Community for his PhD grant.Peer reviewe

Redes de apoio ao adolescente no contexto do cuidado à saúde: interface entre saúde, família e educação

OBJECTIVEAnalyze adolescents' perceptions about support networks and their health needs.METHODAnalytical and interpretive study using focus groups conducted in municipal state schools in Fortaleza, in the State of Ceará during the first semester of 2012. The sample comprised 36 male and female adolescents aged between 13 and 16 years attending the ninth grade of the second phase of elementary school.RESULTSThematic analysis revealed that the health care support network and interaction between health professionals, education professionals and family members was insufficient, constituting a lack of an integrated network to enable and provide support for health promotion.CONCLUSIONCoordination between education, health and family services has the potential to act as a support network to help meet adolescents' healthcare needs and demands.OBJETIVOAnalizar las percepciones de los adolescentes acerca de las redes de apoyo a sus necesidades de salud.MÉTODOEstudio analítico interpretativo, llevado a cabo en escuelas del Municipio de Fortaleza, CE, en el primer semestre de 2012, por medio de grupos focales. Los sujetos de la investigación fueron 36 adolescentes de ambos sexos con edades entre 13 y 16 años y que cursaban el último año de la educación básica brasileña.RESULTADOSEl análisis por categorización temática permitió la comprensión del fenómeno, desvelando que la red de apoyo a los cuidados sanitarios de los adolescentes y la interrelación entre los profesionales sanitarios, la escuela y los familiares es insuficiente, configurándose la ausencia de una red integrada que favorezca y dé soporte a la promoción de su salud.CONCLUSIÓNLa articulación entre los sectores educativo, familiar y sanitario puede funcionar como red de apoyo a las necesidades y demandas de cuidados de los adolescentes.OBJETIVOAnalisar as percepções dos adolescentes sobre as redes de apoio a suas necessidades de saúdeMÉTODOEstudo analítico interpretativo, realizado em escolas do Município de Fortaleza, CE, no primeiro semestre de 2012, por meio de grupos focais. Os sujeitos da pesquisa foram 36 adolescentes de ambos os sexos com idades entre 13 e 16 anos e que cursavam o 9oano do ensino fundamental II.RESULTADOSA análise por categorização temática permitiu a compreensão do fenômeno, revelando que a rede de apoio aos cuidados à saúde dos adolescentes e a inter-relação entre os profissionais da saúde, da escola e familiares é insuficiente, configurando a ausência de uma rede integrada que favoreça e dê suporte à promoção de sua saúde.CONCLUSÃOA articulação entre os setores educacional, familiar e de saúde pode funcionar como rede de apoio às necessidades e demandas de cuidados dos adolescentes

Psychosocial and Sociodemographic Determinants Related to Chronic Diseases in Immigrants Residing in Spain

The aim of the study is to analyze the effect of the psychosocial determinants of satisfaction with social support, resilience and satisfaction with life, and the sociodemographic determinants of age, gender and length of residence on chronic diseases in immigrants living in Spain. The sample was composed of 1131 immigrants from Africa, Eastern Europe, Latin America and Asia. 47.1% were men and 52.9% were women. Most relevant results point to age as the sociodemographic variable with the highest predictive effect in the six chronic diseases analyzed. Gender, in this case female, predicts arthrosis, chronic back pain and migraine, whereas length of residence was only significant in the case of chronic allergies. Regarding psychosocial variables, resilience is a good predictor of hypertension, chronic allergies and arthrosis. However, satisfaction with social support appears to be the best predictor for chronic back pain in the regression equation, satisfaction with life being a significant variable in migraine, arthrosis, allergies and high cholesterol. Results are notably relevant for the design of preventive health programs in immigrants, as well as in ensuring their appropriate access to the health system so that their chronic diseases can be diagnosed. Given the relevance and incidence of the chronic diseases analyzed in immigrants, preventive strategies should be improved to tackle chronic diseases that can have a serious impact on immigrants’ healthThis study was made possible by grants from the Spanish Economy and Competitiveness Ministry (Project I+D: PSI2013-40508-P). This research was supported by Grant Number HUM-590 (PAIDI, Junta de Andalucía). Partial funding for open access charge: Universidad de Málaga

Characterization of Japanese Plum (Prunus salicina) PsMYB10 Alleles Reveals Structural Variation and Polymorphisms Correlating With Fruit Skin Color

The red to blue hue of plant organs is caused due to anthocyanins, which are water-soluble flavonoid pigments. The accumulation of these pigments is regulated by a complex of R2R3-MYB transcription factors (TFs), basic-helix-loop-helix (bHLH), and WD-repeat (WDR) proteins (MBW complex). In Rosaceae species, R2R3-MYBs, particularly MYB10 genes, are responsible for part of the natural variation in anthocyanin colors. Japanese plum cultivars, which are hybrids of Prunus salicina, have high variability in the color hue and pattern, going from yellow-green to red and purple-blue, probably as a result of the interspecific hybridization origin of the crop. Because of such variability, Japanese plum can be considered as an excellent model to study the color determination in Rosaceae fruit tree species. Here, we cloned and characterized the alleles of the PsMYB10 genes in the linkage group LG3 region where quantitative trait loci (QTLs) for the organ color have been mapped to other Prunus species. Allele segregation in biparental populations as well as in a panel of varieties, combined with the whole-genome sequence of two varieties with contrasting fruit color, allowed the organization of the MYB10 alleles into haplotypes. With the help of this strategy, alleles were assigned to genes and at least three copies of PsMYB10.1 were identified in some varieties. In total, we observed six haplotypes, which were able to characterize 91.36% of the cultivars. In addition, two alleles of PsMYB10.1 were found to be highly associated with anthocyanin and anthocyanin-less skin. Their expression during the fruit development confirms their role in the fruit skin coloration. Here, we provide a highly efficient molecular marker for the early selection of colored or non-colored fruits in Japanese plum breeding programs.info:eu-repo/semantics/publishedVersio

Influence of ZnO and TiO2 particle sizes in the mechanical and dielectric properties of vulcanized rubber

The novelty of the present study relies on the straightforward sonication of ZnO and TiO2 and incorporation to a complex formulation of latex, with other several organic-inorganic additives that influences the cross-linking reactions. The new elastomer with particles carefully sonicated exhibit improved electrical and mechanical properties. Strong interaction among the nanoparticles and the polymer amorphous phase has been proved by means of FTIR, SEM and XRD analyses. The synergistic effect of hybrid fillers with nanometric dimensions can be used to design high-performance natural rubber nanocomposites with enhanced electrical resistance and good cross-linking degree.Peer ReviewedPostprint (author's final draft