262 research outputs found
The refugee entrepreneurship process from/in emerging economies
The paper examines several refugee experiences in Mexico and presents their reasons for leaving their home countries. A gap in research is identifying the entrepreneurial process experienced by refugee entrepreneurs. We use the case study of 10 Latin American refugees in Mexico to propose a conceptual framework that describes the entrepreneurial process of refugee entrepreneurs. We have found that this process begins with the abandonment of the country of origin, followed by the traumatic experiences that caused flight and the difficulties they face in the pilgrimage to the host country. These events help shape the entrepreneurial intention of the refugees
A comparative study of fatty acid profiles of fat in commercial Spanish suckling kids and lambs
Fatty acid profiles are a major contributor to meat quality in small ruminants. Nevertheless, while fatty acid profiles
from suckling lambs have been extensively studied they are virtually unknown in suckling kids. Fatty acid profiles of
intramuscular and kidney knob fat depots of suckling kids were compared with fatty acid profiles of lambs with a
quality label in the Spanish market. Forty suckling kids from Blanca Celtibérica (BC), Moncaína (Mo), Negra Serrana
(NS) and Murciano Granadina (MG) breeds and 20 Churra male suckling lambs labelled with ‘Lechazo de Castilla y
León’ Protected Geographic Indication were slaughtered at commercial live weights (12 kg). In both depots differences
in the unsaturated fatty acid profile were observed between breeds. The most pronounced differences were observed
between meat goat breeds (BC, Mo and NS) and lambs, whilst a greater similarity in the fatty acid profile was observed
between kids from dairy goat breeds (MG) and lambs. The lowest polyunsaturated fatty acid content was observed in
meat goat breeds (approximately 21 to 22% of total fatty acids detected in the intramuscular fat). No significant
differences in atherogenic index and desirable fatty acid content (range 68 to 70% of total fatty acids detected) were
observed. However, a more favourable (lower than 8.07) n-6/n-3 ratio was observed in meat goat breeds. The use of
fatty acid profiles from intramuscular and kidney knob fat could be proposed as a tool to differentiate goat kids and
lambs. The fact that intramuscular fat from suckling kids and lambs shows appropriate lipid nutritional indices and
their low carcass fatness indicate that moderate consumption of suckling kid and lamb meat may contribute to an
overall balanced diet for humansComisión Interministerial de Ciencia y Tecnología AGL-2005-0577-C02-0
Propuesta docente para enseñanza no presencial mediante método de aprendizaje cooperativo
Este trabajo plantea, ante una situación excepcional provocada por el estado de alarma debido al COVID-19, una propuesta docente inmediata, de cambio de estilo de enseñanza de modo presencial a no presencial en un ciclo formativo de grado medio de la familia de sanidad. La decisión de la metodología elegida para la propuesta, el aprendizaje cooperativo, se basa en un análisis sobre las diferentes interacciones de los alumnos para conseguir sus objetivos y diferentes técnicas de aprendizaje cooperativo, seleccionando la óptima para la ejecución online aunque con matices y adaptaciones. Ha sido un reto transformar el material a esta situación online junto con docentes y alumnado no acostumbrado a estos métodos. Pero según estudios y titulaciones ya establecidas como modalidades online, hay mucho porcentaje de éxito. Con buena actitud, aptitud y motivación de los estudiantes mediante el uso de las TIC y el interés del profesorado se pueden conseguir grandes avances para un futuro incierto en las especialidades plenamente presenciales.<br /
Dielectric Strength of Nanofluid-Impregnated Transformer Solid Insulation
The interest in developing new fluids that can be used as dielectric liquids for transformers
has driven the research on dielectric nanofluids in the last years. A number of authors have reported
promising results on the electrical and thermal properties of dielectric nanofluids. Less attention
has been paid to the interaction of these fluids with the cellulose materials that constitute the solid
insulation of the transformers. In the present study, the dielectric strength of cellulose insulation is
investigated, comparing its behavior when it is impregnated with transformer mineral oil and when
it is impregnated with a dielectric nanofluid. The study includes the analysis of the AC breakdown
voltage and the impulse breakdown voltage of the samples. Large improvements were observed on
the AC breakdown voltages of the specimens impregnated with nanofluids, while the enhancements
were lower in the case of the impulse tests. The reasons for the increase in AC breakdown voltage
were investigated, considering the dielectric properties of the nanofluids used to impregnate the
samples of cellulose. The analysis was completed with a finite element study that revealed the
effect of the nanoparticles on the electric field distribution within the test cell, and its role in the
observed enhancement.This work was supported by the Spanish State Research Agency under grant PID2019-
107126RB-C21/ AEI/10.13039/501100011033 and by the Spanish Ministry of Economy and Competitiveness under grant DPI2015-71219-C2-2-
The illuminated cavern: a singular Gravettian lamp throws light upon the rock art at the cave of La Pileta (Benaoján, Málaga)
En este trabajo presentamos el estudio arqueológico, paleontológico, tafonómico, cronológico y geoquímico de una valva de ostra hallada en la cueva de La Pileta. El ejemplar procede de depósitos fosilíferos neógenos dis-tantes más de 10 km del yacimiento. Una vez adaptada, la concha fue empleada como lámpara portátil. La cro-nología
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C/AMS de la costra carbonatada que sellaba la cubeta nos remite al periodo Gravetiense. Según diversos indicios en la lámpara, durante su vida útil se procesaron o almacenaron pigmentos. Los datos aportados informan sobre la dispersión del simbolismo del Paleolítico Supe-rior Inicial hasta el extremo sudoccidental europeo, así mismo, suma nuevos elementos al debate sobre la exis-tencia de una fase presolutrense en el arte parietal de La Pileta y, por ende, de todo el sur de la Península Ibérica.This paper presents an archaeological, paleontologi-cal, taphonomical, chronological and geochemical study of a fossil oyster valve retrieved at the cave of La Pileta. The specimen was taken from Neogene fossiliferous depo- sits located more than 10 km away from the site. The shell was worked so as to become a portable lamp. 14C/AMS dating of the carbonate crust overlying the shell indicates a Gravettian chronology. Different lines of evidence indicate that during its use life, the valve was used to harbor or process pigments. The data presented throw light on the spread of symbolism in the southwestern corner of Europe during the Early Upper Palaeolithic, and add elements to the debate on the existence of a pre-Solutrean stage in the rock art of La Pileta and, by extension, of the southern Iberian Peninsula
Selection of New Probiotics for Endometrial Health
Microbiota is a crucial player in gynecologic health, in which bacteria can shift to a dysbiotic state triggering a pathogenic process. Based on an ecological understanding of the problem, the aim of this study is to select a potential probiotic strain to improve female reproductive tract based on its capacity to initially lower pH and to promote the reduction of pathogenic bacteria. Based on this rationale, strain Lactobacillus rhamnosus BPL005 was initially selected for its capacity to reduce in vitro pH levels and produce organic acids. Subsequently, strain L. rhamnosus BPL005 (CECT 8800) was demonstrated to have a protective role on endometrial infections in an in vitro model of bacterial colonization of primary endometrial epithelial cells with Atopobium vaginae, Gardnerella vaginalis, Propionibacterium acnes, and Streptococcus agalactiae. In this model, BPL005 when co-cultured with those pathogens was shown to lower pH and to produce organic acids, being lactic acid the most relevant. The co-cultivation of strain L. rhamnosus BPL005 with tested reference pathogens produced a significant reduction in P. acnes and St. agalactiae levels and a non-significant reduction in A. vaginae and G. vaginalis. The colonization of L. rhamnosus BPL005 in the culture decreased IL-6, IL-8, and MCP-1, heightened in the presence of pathogens, and increased IL-1RA and IL-1 beta. Finally, safety was evaluated showing no signs of cytotoxicity, irritation in vaginal tests, or allergic contact dermatitis potential through the Local Lymph Node Assay. Overall, these results show the potential of L. rhamnosus BPL005 strain as a probiotic in gynecological health
Socio-Economic Impacts of the Current Demographic Process in Galicia
Texto dispoñible en galego e españolO descenso da taxa de natalidade e o aumento na esperanza de vida son os factores clave que explican o actual proceso demográfico en Galicia, cuxa consecuencia máis inmediata é o avellentamento da súa poboación. A baixa taxa de natalidade supón un límite ao tamaño das novas cohortes afectando, así mesmo, ao tamaño da poboación total. Esta tendencia demográfica constitúe un desafío para o sostemento do actual estado do benestar, onde o tamaño relativo das cohortes é crucial. Neste traballo analízase o actual proceso demográfico en Galicia e as principais consecuencias para o mercado de traballo, as prestacións de protección social, o gasto sanitario e de atención á dependencia e o gasto en educaciónEl descenso de la tasa de natalidad y el aumento en la esperanza de vida son los factores clave que explican el actual proceso demográfico en Galicia, cuya consecuencia más inmediata es el envejecimiento de su población. La baja tasa de natalidad supone un límite al tamaño de las nuevas cohortes afectando, asimismo, al tamaño de la población total. Esta tendencia demográfica constituye un desafío para el sostenimiento del actual estado del bienestar, donde el tamaño relativo de las cohortes es crucial. En este trabajo se analiza el actual proceso demográfico en Galicia y las principales consecuencias para el mercado de trabajo, las prestaciones de protección social, el gasto sanitario y de atención a la dependencia y el gasto en educaciónThe decline in birth rate and increasing life expectancy are the key factors that explain the demographic process in Galicia and its most immediate consequence is the aging of its population. The low birthrate limits the size of new cohorts and also affects the size of the total population. This demographic trend poses a challenge in maintaining the current welfare state, where the relative size of cohorts is crucial. In this work we describe the current demographic process in Galicia and analyze its main consequences in the labor market, pensions, health and disability spending as well as spending on educationS
LIGHT/HVEM/LTβR Interaction as a Target for the Modulation of the Allogeneic Immune Response in Transplantation
[EN] The exchange of information during interactions of T cells with dendritic cells, B cells or other T cells regulates the course of T, B and DC-cell activation and their differentiation into effector cells. The tumor necrosis factor superfamily member LIGHT (homologous to lymphotoxin, exhibits inducible expression and competes with HSV glycoprotein D for binding to herpesvirus entry mediator, a receptor expressed on T lymphocytes) is transiently expressed upon T cell activation and modulates CD8 T cell-mediated alloreactive responses upon herpes virus entry mediator (HVEM) and lymphotoxin β receptor (LTβR) engagement. LIGHT-deficient mice, or WT mice treated with LIGHT-targeting decoy receptors HVEM-Ig, LTβR-Ig or sDcR3-Ig, exhibit prolonged graft survival compared to untreated controls, suggesting that LIGHT modulates the course and severity of graft rejection. Therefore, targeting the interaction of LIGHT with HVEM and/or LTβR using recombinant soluble decoy receptors or monoclonal antibodies represent an innovative therapeutic strategy for the prevention and treatment of allograft rejection and for the promotion of donor-specific tolerance. This review discusses how targeting the interaction of LIGHT with HVEM and/or LTbR using recombinant soluble decoy receptors or monoclonal antibodies may represent an innovative therapeutic intervention for the prevention and treatment of allograft rejection and promotion of donor-specific tolerance. © 2013 The American Society of Transplantation and the American Society of Transplant SurgeonsSIThis work has been supported by grants FIS reference # PI10/01039 from Ministry of Health and Department of Education from Junta of Castilla and Leon reference # LE007A10-2 (to JIRB), and by the Swiss National Science Foundation (to PS
How you can live the duel in the rural areas? A look from the elderly
Objetivo: Conocer la perspectiva de las personas mayores y su forma de vivir el duelo en la comunidad rural. Metodología: Es un estudio etnográfico, en el medio rural, cuya recogida de datos fue mediante entrevistas y observación participante. Para estructurar los datos, se utilizaron los patrones funcionales de Gordon. Resultados: Las actitudes experimentadas en el medio rural se caracterizan principalmente: por las manifestaciones externas de duelo, el apoyo recibido por toda la vecindad a los dolientes y la existencia de costumbres culturales. Conclusiones: El duelo en el ámbito rural está impregnado de costumbres culturales, familiares y comunitarias. Dichas prácticas han sufrido una férrea transformación con el paso de los años.Objective: to know the perspective of older people and their way of living the duel in the rural community. Methodology: it is an ethnographic study, in rural areas, whose data was collected through interviews and participant observation. To structure the data, we used the functional patterns of Gordon. Results: The attitudes experienced in rural areas are characterized mainly by the external manifestations of mourning, the support received by the entire neighborhood to the mourners and the existence of cultural customs. Conclusions: The duel in the rural area is imbued with cultural, family, and Community Customs. These practices have suffered a strong transformation with the passage of the years
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