The impact of role modeling on the professional identity of pre-service teachers

Research shows that mentoring EFL pre-service teachers during the practicum element of teacher-training courses allow them to get experience and to develop, improve, and put into practice their teaching skills. This professional practice can impact the development of a positive or negative professional identity in teachers. Current literature, however, seems to focus on the shaping of teacher identity and learner identity, but there is little empirical research regarding the development and shaping of the identity of pre-service teachers. Pre-service teachers are the main actors of this practicum stage of teacher-training programs and, therefore, by working in collaboration and being supported by a mentor as a role model, they develop their professional identity. The present qualitative case study sought to explore the shaping and re-shaping of the professional identity of fifteen EFL pre-service teachers of a northern Mexican university and the impact of working with English teacher mentors as role models. Information gathered through the constant comparative method of data from the participants taken from their reflective journals, mentor-observations, and self-observations suggests that although working with a positive role model encourages the development of a stronger teacher identity and an improvement in their teaching practice, working with a bad role model can also have the same results

Role of [18F]FDG PET/CT in the differential diagnosis of a supraclavicular lump: neurofibromatosis disease

We report a 31-year-old male with a history of left forearm neuroma surgically removed, consulting for a supraclavicular bultoma congruent with the supradiaphragmatic lymphoproliferative syndrome in computed tomography (CT) scan. [18F]FDG PET/CT images helped to establish the most diagnostic yield lesion for the biopsy, and allowed an accurate staging of the neurofibromatosis (NF) disease, leading to the most appropriate therapeutic option for the patient

Geoarqueología y registro geológico del último milenio en el pozo de la antigua Fábrica de Tabacos (Gijón, N España)

During the 2008-2009 archaeological excavations carried out in the ancient Fábrica de Tabacos (Gijón), a Roman well structure was discovered, covered by a sedimentary infill with archaeological remains. This work deals with the geological and depositional characterization of the sedimentary infill. Two hand drill cores of 1.45 m and 1.65m long were studied, using stratigraphic, geochemical and geochronological techniques. The evolutionary model of the sedimentary infill includes 5 phases: 1) construction and functioning as a well (prior? to 5th-6th centuries); 2) abandonment of the well and sedimentation in a restricted palustrine-like environment (5th-7th centuries); 3) a phase dominated by dumping of organic-rich landfill material (7th century); 4) re-starting of palustrine-like environment with some landfill episodes (7th-8th centuries); and 5) a final phase as a dumping site (at least during the 8th century). The sedimentary infill is an outstanding geoarchaelogical archive that provides key information to improve the knowledge of the region from the 6th to the 8th centuries.Agradecemos a la empresa Terra Arqueos S.L. su aportación en la realización de los sondeos y al Ayuntamiento de Gijón la financiación de la investigación (proyectos FUO-EM-403-10 y FUO-EM-342-09)Peer Reviewe

Diario de trabajo: Herramienta para la expresión de los docentes en formación Journal: tool for the expression of preservice teachers

La finalidad del presente artículo es reportar resultados de un estudio cualitativo con enfoque fenomenológico, llevado a cabo con 11 diarios de trabajo, cuyo objetivo fue conocer las emociones, las situaciones y las estrategias de trabajo implementadas por estudiantes normalistas quienes redactaron sus experiencias basadas en la estructura propuesta por Farrell (2019) construida a partir de las aportaciones de Dewey (1933), Shön (1983) Alvarado, Neira y Westmacot (2019). Las condiciones sanitarias predominantes a partir de 2020 condujeron a la modificación de las maneras tradicionales del prácticum. El trayecto formativo práctica profesional de la malla curricular 2018 de la licenciatura para la enseñanza y aprendizaje en Telesecundaria, sirvió de apoyo para el análisis de diarios de trabajo realizados por los normalistas. Se diseñaron códigos con datos In Vivo, relacionados con la temática y se clasificaron en categorías. El análisis de los diarios sustentado en la teoría fundamentada (Charmaz, 2006) permitió acercarse en el conocimiento de las experiencias de los normalistas, sus sentimientos, los esfuerzos para dar cumplimiento a la jornada de práctica y el provecho del prácticum según, González-Garzón (2012), Mayorga Fernández (2017), Tejada-Fernández (2017), Huerta Ramón (2018) y Venegas Ortega (2018) como aspecto formativo. Los resultados cualitativos muestran que hubo deficiencias para la comunicación y la participación vinculadas a los recursos tecnológicos con que se contaron. Los normalistas tuvieron dificultades para la retroalimentación de los adolescentes en los grupos de secundaria. Además, las políticas administrativas impusieron la aprobación general lo que vulneró la actividad de los docentes en formación

Topography modulates climate sensitivity of multidecadal trends of holm oak decline

Forest decline events have increased worldwide over the last decades, being holm oak one of the tree species with the most worrying trends across Europe. Previous research identified drought and soil pathogens as the main causes behind holm oak decline. However, despite tree health loss is a multifactorial phenomenon where abiotic and biotic factors interact in time and space, there are some abiotic factors whose influence has been commonly overlooked. Here, we evaluate how land use (forests versus savannas), topography, and climate extremes jointly relate to spatiotemporal patterns of holm oak defoliation over almost three decades (1987-2014) in Spain, where holm oak represents the 25% of the national forested area. We found an increasing defoliation trend in 119 of the total 134 holm oak plots evaluated, being this increase rate significantly higher in forests compared to savannas. Moreover, we have detected that the interaction between topography and summer drought can explain trends of holm oak decline across the Mediterranean region. While a higher occurrence of dry summers increases defoliation trends in complex terrains where forests dominate, an inverse relationship was found at flatter terrains where savannas are located. Our results contribute to growing evidence of the influence of local topography, tightly linked to potential soil water availability, on forest functioning, as it can shape forest vulnerability against climate extremes. The present work could assist the identification of potential tree decline hotspots over the Mediterranean region. Moreover, our findings suggest that forest adaptive management will be key to guarantee the health and future stability of Mediterranean oak ecosystems, especially in the topographically more complex areas where tree vulnerability to climate extremes may be greater.This work was supported by a Juan de la Cierva-Incorporación postdoctoral contract IJC2020-045630-I and the MANAGE4FUTURE project (TED2021-129499A-I00) both funded by MCIN/AEI /10.13039/501100011033 and the European Union NextGenerationEU/PRTR. Ana-Maria Hereş was financed by the REASONING (PNIII-P1-1.1-TE-2019-1099) project through UEFISCDI (link; Romanian Ministry of Education and Research). This research was supported by the BERC 2018-2021 (Basque Government), and BC3 María de Maeztu Excellence Accreditation 2018-2022, Ref.MDM-2017-0714 (Spanish Ministry of Science, Innovation and Universities).defoliationcoppicesdehesasclimatic anomaliestree declinemultidecadal trendsSpainMediterranean forestPublishe

Topography modulates climate sensitivity of multidecadal trends of holm oak decline

Forest decline events have increased worldwide over the last decades being holm oak (Quercus ilex L.) one of the tree species with the most worrying trends across Europe. Since this is one of the tree species with the southernmost distribution within the European continent, its vulnerability to climate change is a phenomenon of enormous ecological importance. Previous research identified drought and soil pathogens as the main causes behind holm oak decline. However, despite tree health loss is a multifactorial phenomenon where abiotic and biotic factors interact in time and space, there are some abiotic factors whose influence has been commonly overlooked. Here, we evaluate how land use (forests versus savannas), topography, and climate extremes jointly determine the spatiotemporal patterns of holm oak defoliation trends over almost three decades (1987–2014) in Spain, where holm oak represents the 25% of the national forested area. We found an increasing defoliation trend in 119 out of the total 134 holm oak plots evaluated, being this defoliation trend significantly higher in forests compared with savannas. Moreover, we have detected that the interaction between topography (which covariates with the land use) and summer precipitation anomalies explains trends of holm oak decline across the Mediterranean region. While a higher occurrence of dry summers increases defoliation trends in steeper terrains where forests dominate, an inverse relationship was found in flatter terrains where savannas are mainly located. These opposite relationships suggest different causal mechanisms behind decline. Whereas hydric stress is likely to occur in steeper terrains where soil water holding capacity is limited, soil waterlogging usually occurs in flatter terrains what increases tree vulnerability to soil pathogens. Our results contribute to the growing evidence of the influence of local topography on forest resilience and could assist in the identification of potential tree decline hotspots and its main causes over the Mediterranean region.Este trabajo ha contado con el apoyo de un contrato postdoctoral Juan de la Cierva-Incorporación IJC2020-045630-I y el proyecto MANAGE4FUTURE (TED2021-129499A-I00) ambos financiados por MCIN/AEI /10.13039/501100011033 y la Unión Europea NextGenerationEU/PRTR. Ana-Maria Hereş fue financiada por el proyecto REASONING (PNIII-P1-1.1-TE-2019-1099) a través de UEFISCDI (Ministerio rumano de Educación e Investigación). Esta investigación ha contado con el apoyo del BERC 2018-2021 (Gobierno Vasco), y la Acreditación de Excelencia BC3 María de Maeztu 2018-2022, Ref.MDM-2017-0714 (Ministerio de Ciencia, Innovación y Universidades de España).Publishe

Microsomal prostaglandin E synthase-1 is involved in the metabolic and cardiovascular alterations associated with obesity

Background and Purpose: Microsomal prostaglandin E synthase-1 (mPGES-1) is an inducible isomerase responsible for prostaglandin E2 production in inflammatory con ditions. We evaluated the role of mPGES-1 in the development and the metabolic and cardiovascular alterations of obesity. Experimental Approach: mPGES-1+/+ and mPGES-1 / mice were fed with normal or high fat diet (HFD, 60% fat). The glycaemic and lipid profile was evaluated by glu cose and insulin tolerance tests and colorimetric assays. Vascular function, structure and mechanics were assessed by myography. Histological studies, q-RT-PCR, and western blot analyses were performed in adipose tissue depots and cardiovascular tissues. Gene expression in abdominal fat and perivascular adipose tissue (PVAT) from patients was correlated with vascular damage. Key Results: Male mPGES-1 / mice fed with HFD were protected against body weight gain and showed reduced adiposity, better glucose tolerance and insulin sensi tivity, lipid levels and less white adipose tissue and PVAT inflammation and fibrosis, compared with mPGES-1+/+ mice. mPGES-1 knockdown prevented cardiomyocyte hypertrophy, cardiac fibrosis, endothelial dysfunction, aortic insulin resistance, and vascular inflammation and remodelling, induced by HFD. Obesity-induced weight gain and endothelial dysfunction of resistance arteries were ameliorated in female mPGES-1 / mice. In humans, we found a positive correlation between mPGES-1 expression in abdominal fat and vascular remodelling, vessel stiffness, and systolic blood pressure. In human PVAT, there was a positive correlation between mPGES-1 expression and inflammatory markers. Conclusions and Implications: mPGES-1 inhibition might be a novel therapeutic approach to the management of obesity and the associated cardiovascular and meta bolic alterations

Nonuniversality due to inhomogeneous stress in semiconductor surface nanopatterning by low-energy ion-beam irradiation

A lack of universality with respect to ion species has been recently established in nanostructuring of semiconductor surfaces by low-energy ion-beam bombardment. This variability affects basic properties of the pattern formation process, like the critical incidence angle for pattern formation, and has remained unaccounted for. Here, we show that nonuniform generation of stress across the damaged amorphous layer induced by the irradiation is a key factor behind the range of experimental observations, as the form of the stress field is controlled by the ion/target combination. This effect acts in synergy with the nontrivial evolution of the amorphous-crystalline interface. We reach these conclusions by contrasting a multiscale theoretical approach, which combines molecular dynamics and a continuum viscous flow model, with experiments using Xe+ and Ar+ ions on a Si(100) target. Our general approach can apply to a variety of semiconductor systems and conditions.This work has been partially supported by MICINN (Spain) Grant MAT2011-13333-E, and MINECO (Spain) Grants FIS2012-38866-C05-01, FIS2012-38866-C05-05, FIS2013-47949-C2-2-P and FIS2012-32349. TEM work has been conducted at LABMET laboratory, associated with Red de Laboratorios of CAM, Spain. A.M.-B. acknowledges support from MINECO, through FPI scolarship BES-2010-036179. A.R.C. acknowledges funding from Juan de la Cierva program (Spain) under Contract No. JCI-2012-14509.Publicad

LA TÉCNICA DE LA ADMINISTRACIÓN ESTRATÉGICA, ADOPTADA Y ADAPTADA A LA ACTIVIDAD AGROALIMENTARIA -ANTECEDENTES HISTÓRICOS-

Strategic Management, Methodology, SWOT Analysis., Agribusiness,