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Optimization of Air Lime Concrete and Air Lime-based Ternary Mixtures with Sustainable Additives for Enhanced Performance in Heritage Buildings
No full textThe urgent need for sustainable, carbon-negative construction materials has been intensified due to global warming (Barbhuiya, 2023; Haik, 2020). Historic buildings face unique challenges in integrating eco-friendly parameters due to the necessity of compatibility of new materials with historic structures and mitigating their long-term impacts (ICOMOS, 2003). The replacement of OPC with lime in concretes and mortars enables lower carbon emissions and compatibility with historic buildings, although it exhibits higher porosity, water absorption and lower compressive strength than OPC (González-Sánchez, 2021; Rosell, 2023; Velosa, 2009). In this case, admixtures are used to improve the performance of lime-based mixes (Grist, 2013; Seabra, 2009).
The study focuses on optimising lime concrete and air lime-based ternary mixes by incorporating eco-friendly additives, as different pozzolanic agents and fibres, to enhance their physical and mechanical properties to be used in restoration works. Silica fume, which is a by-product, and natural volcanic ash were selected as pozzolanic agents and added in different percentages between 0–30%. Hemp and basaltic fibres were included in 1%. The study evaluated the effects of different binders and additives through analyses such as fluidity, water retention, and setting time, also compressive strength tests (7th-28th days).
The fresh state analyses revealed that adding silica fume reduced the slump values of the mortars by 13%, whereas volcanic ash and fibres had no significant impact on these values. It was also observed that mixtures containing volcanic ash exhibited lower water retention than those with silica fume. Additionally, the inclusion of basalt fibres reduced water retention in the lime-based ternary mortar by up to 4% compared to those containing hemp fibres. According to mechanical tests, cement and silica fume contributed to the compressive strength values of lime-based mixtures. However, volcanic ash and fibres negatively affected compressive strength values in the early stage. As a conclusion, using silica fume and cement in lime-based mixtures reduces the workability of mortars, contrary to volcanic ash and fibres, while increasing mechanical properties even in the early stages
Never discard enucleation as a possibility: successful enucleation of a neuroendocrine tumor in the pancreatic neck in long and close proximity to the main pancreatic duct
No full textParenchyma-sparing surgery includes enucleation. Enucleation is not
used very often, partly because of its technical complexity, and is usually
reserved for anatomically favorable cases (> 3 mm from the duct of
Wirsung) with benign etiology. We present a case demonstrating that it
is always worth exploring the possibility of performing a more con-
servative surgery even in difficult anatomic locations
Salud mental y bienestar emocional en el contexto educativo español
No full textAbstract:
El incremento del malestar emocional y los trastornos mentales en la población infanto-juvenil requiere de intervenciones tempranas efectivas. Las escuelas representan entornos propicios para la prevención, detección y atención de alumnado en riesgo. Esta ponencia tiene como objetivo describir cómo se aborda la promoción del bienestar emocional y las dificultades en salud mental en el contexto educativo español, como resultado del Proyecto "Revisión y valoración de políticas de prevención e intervención en salud mental infanto-juvenil en centros educativos”, desarrollado en colaboración con la Universidad Internacional de La Rioja (UNIR-ITEI).
A nivel global, la aplicación de intervenciones basadas en la terapia cognitivo-conductual, la psicoterapia narrativa, el mindfulness, la psicoeducación y la neurocognición ha probado ser eficaz en reducir síntomas de ansiedad, depresión, estrés postraumático y trastornos de conducta en los estudiantes. No obstante, en el contexto educativo español, existe un déficit en la atención psicológica a estudiantes, así como en el apoyo a profesores y familias.
Los expertos reconocen la necesidad de contar con psicólogos especializados, que implementen recursos basados en la evidencia para fomentar el bienestar emocional y prevenir problemas de salud mental en los alumnos. Dentro de los recursos existentes en nuestro país, sobresalen los programas de educación socioemocional, como las estrategias más efectivas para el desarrollo positivo de los estudiantes, fortaleciendo sus habilidades emocionales y sociales, y contribuyendo a mejorar su bienestar personal, social y rendimiento académico.
Sin embargo, a pesar de los esfuerzos para promover la salud mental en niños y jóvenes, en España persiste la falta de criterios en la inclusión de la educación emocional en los currículos, con decisiones carentes a menudo de respaldo científico o consideraciones sobre la prevalencia de trastornos mentales. Además, se reconoce la urgencia de la capacitación del personal docente, como una medida esencial para el desarrollo integral del alumnado
Bridging Ideological Divides: Why Christians Still Disagree About Evolution and What We Should Do About It
No full textWhy do creationists persist in rejecting the evidence for Darwin’s theory of evolution? This paper explores longstanding disagreements among Christians over the epistemic status of evolution. Like other studies that have tried to define the evidence for evolution, a recent analysis by Gijsbert van den Brink, Jeroen de Ridder, and René van Woudenberg does not adequately face up to antecedent commitments that play into any assessment of evolution. The scientific theory of evolution involves higher-level models that are associated with a range of non-scientific factors, including theological judgments. In light of these realities, an emphasis on mutual dialogue and understanding offers promising opportunities for Christians trying to discover the truth about God’s creation
Printable formulations of protein and Chlorella vulgaris enriched vegetable puree for dysphagia diet
No full textThree Chlorella vulgaris biomasses, smooth Chlorella, honey Chlorella and white Chlorella were used at a percentage of 3 % in vegetable purees (10 % zucchini and 10 % carrots), enriched in protein (22 % lentil protein
concentrate) and 0.8 % of xanthan gum. Their nutritional, in vitro digestibility, physicochemical, rheological and
3D-printability properties were determined. Sample with white Chlorella showed significantly higher antioxidant
capacity than the control, with FRAP value of 100.62 and DPPH of 20.72 μmol Trolox/100 g puree. Purees
containing C. vulgaris can be claimed to be a source of iron since they provide >15 % of the Nutrient Reference
Value (NRV) for this essential mineral (2.39–2.36 mg/100 g). Total digestibility was high (90.9–92.6 %) for all
the samples whereas the highest protein digestibility values were observed for purees with smooth Chlorella (46
%). Smooth Chlorella showed very noticeable color differences compared to control (ΔE values >20). All the
purees showed a shear thinning behavior and a weak gel structure (tan δ 0.206–0.212), which made them
suitable for dysphagia diet and also for being successfully printed in 3D
La influencia de la información difundida en los foros de las redes sociales sobre la elección y continuidad de las madres hacia la lactancia
No full textIntroducción: La alimentación del recién nacido es crucial para su desarrollo inicial. En la era de las
redes sociales, estas plataformas ejercen una influencia significativa en las decisiones de los padres.
Ante la abrumadora cantidad de información y opiniones disponibles en línea, surge la necesidad de
investigar cómo esta influencia digital impacta en las elecciones alimentarias de los recién nacidos.
Objetivos: Analizar la influencia de los foros de redes sociales en las decisiones de la lactancia.
Metodología: Se realizó una revisión bibliográfica en las bases de datos PubMed, CINHAL, PsycInfo
y Scopus entre los meses de octubre de 2023 a enero de 2024. Se incluyeron 10 artículos cuyo
análisis e interpretación se realizó temáticamente.
Resultados: A través del análisis de los artículos seleccionados se detectan las siguientes
categorías: los foros de Facebook y los foros de otras redes sociales.
Conclusiones: Las redes sociales impactan las decisiones de alimentación infantil, requiriendo
intervenciones específicas para garantizar información veraz y apoyo adecuado a las madres,
promoviendo así una maternidad positiva y el bienestar de los niños.Introduction: The feeding of the newborn is crucial for their initial development. In the era of social
media, these platforms exert significant influence on parental decisions. Faced with the overwhelming
amount of information and opinions available online, there is a need to investigate how this digital
influence impacts the feeding choices of newborns.
Objective: Aim to analyze the influence of social media forums on breastfeeding decisions.
Methodology: A literature review was conducted on the PubMed, CINHAL, PsycInfo and Scopus
databases during the months of October to January of 2023and 2024. Ten articles were included, and
their analysis and interpretation were conducted thematically.
Results: Through the analysis of the selected articles, the following categories are identified:
Facebook forums and forums on other social networks.
Conclusions: Social media influences infant feeding decisions, needing specific interventions to
ensure accurate information and adequate support for mothers, thus promoting positive motherhood
and child well-being
Influence of salt and temperature in the growth of pathogenic free-living amoebae.
No full textIntroduction Free-living amoebae are an extensive group of protistans that can be found in a wide variety of environments. Among them, the Acanthamoeba genus and Naegleria fowleri stand out as two of the most pathogenic amoebae and with a higher number of reported cases. N. fowleri is mainly found in warm freshwater water bodies whereas amoebae of the Acanthamoeba genus are broadly distributed through natural and anthropogenic environments. In this regard, the management and the control of the amoebic populations in swimming pools has become a major public health challenge for institutions.Methods The aim of this work was to evaluate the growth pattern of trophozoites of A. griffini and N. fowleri at different temperatures and salt concentrations.Results and discussion Our results showed that A. griffini resisted a higher concentration of salt than N. fowleri. Moreover, no trophozoites could withstand the salt levels of the sea in in vitro conditions. This work supports the contention that salinity could represent an important and useful tool for the control of the most pathogenic amoebic populations in recreational water bodies
Utilización de la prueba de respiración espontánea, la prueba objetiva de la tos y los resultados de la ecografía diafragmática para predecir el éxito de la extubación: ensayo COBRE-US
No full textLa ventilación mecánica invasiva se prescribe como terapia para diversas enfermedades que comprometen la capacidad de la difusión de oxígeno alveolar. Su objetivo principal es facilitar el proceso mecánico de la ventilación, disminuir parcial o completamente el esfuerzo físico y mejorar el intercambio gaseoso en pacientes críticamente enfermos en unidades de cuidados intensivos. Actualmente, hay escasa evidencia que respalde la implementación de criterios personalizados para la necesidad de ventilación, y no menos importante, para la extubación o el proceso de retiro del ventilador (“destete”) en pacientes con diversos fenotipos y comorbilidades. El proceso de retiro de la ventilación mecánica invasiva se define como la transición gradual y controlada hacia la capacidad de respirar de manera espontánea y autónoma, prescindiendo de la ayuda externa de un ventilador mecánico y de medicamentos relacionados con relajación neuromuscular y la administración de sedantes en las unidades de cuidados intensivos. Este proceso de retiro del ventilador se puede clasificar como simple, difícil o prolongado. Durante este procedimiento, las características individuales y las condiciones clínicas del paciente pueden determinar o prever el éxito o fracaso de la capacidad del sistema respiratorio para funcionar sin asistencia externa. Por lo tanto, durante el retiro, resulta esencial identificar la utilidad clínica de las pruebas realizadas directamente en la cabecera del paciente según sea necesario
Estimating marketing's power via Improved meta-analysis: A deep dive into advertising effectiveness
No full textMarketing effectiveness is at the heart of all business success. Firms spend more on advertising than almost any other marketing activity. Research findings and insights regarding marketing effectiveness, including advertising effectiveness, are varied and conflicting. Meta-analysis has become an increasingly popular and indispensable tool in marketing research aimed at discerning robust generalizations across studies in heavily researched topics. However, current meta-analytic methods recommended by and utilized in marketing lag behind those of other fields, leading to inaccurate effect estimates and incorrect inferences related to heterogeneity in effect: What meta-analytic methods are currently utilized in marketing? What methods should be used? What is the effect of superior meta-analytic methods on important topics related to marketing effectiveness such as advertising? What are typical advertising effect estimates and the relevant heterogeneity for both brand (primary demand) and category (secondary demand) advertising elasticities? What findings are suggested by prior meta-analytic and non-meta-analytic research in marketing effectiveness instruments and indicators—such as elasticities—and how can these indicators be used by practitioners? In this dissertation, I focus on understanding, distilling, and expanding collective knowledge in the area of marketing effectiveness through research on marketing effectiveness instruments and indicators as well as understanding and improving marketing meta-analytic estimation, in both cases predominantly concentrating on advertising as an outset. In the inaugural chapter, I meticulously dissect and outline the prevalent meta-analytic biases researchers should be cognizant of, compare recent historical meta-analytic methods and their application in marketing, and provide a comprehensive guide to robustly conducting meta-analyses in the field. In this research I (a) show that current meta-analytic methods in marketing are lagging behind other fields and that marketing still primarily relies on inferior methods and (b) provide a framework for future meta-analyses in marketing to follow. In the second chapter I pivot to a pragmatic application of the advocated methods detailed in the first chapter, concentrating on brand advertising effectiveness. This involves a thorough meta-analysis and review of antecedent studies, identifying significant reductions in effect due primarily to previously unaccounted for publication-selection bias. Through this research I find and correct for significant misspecification, aggregation, publication, and selection biases present in the advertising effectiveness literature and provide important updates regarding the size of brand advertising elasticities, resulting in estimates that are approximately 5-6 times smaller than those indicated by prior meta-analytic studies. In the third chapter, I carry out a more comprehensive advertising effectiveness meta-analysis by amalgamating brand and category elasticities in a more expansive, broader database. Through this research, I provide the first generalizable estimates of category advertising elasticities; show the usefulness of pooling primary and secondary advertising elasticities to expand heterogeneity analyses and allow for increased sophistication in terms of the number model conditions that can be incorporated; and estimate condition-specific effects for various brand and category advertising scenarios. Through supplementary chapters 4 through 5, I fortify the foundation by discussing price, advertising, and related elasticities as well as their uses and implications for practice from both a meta-analytic viewpoint and a general perspective. Taken together, the findings of my dissertation advance our understanding of marketing effectiveness and provide a path for improving meta-analytic estimation in marketing. In Chapter 1, I show that methods in marketing and advertising research lag behind other fields while drawing a clear path forward. In Chapter 2, I demonstrate that path in the context of a central topic in marketing effectiveness, brand advertising elasticities, while providing evidence of the presence of significant biases and overestimated brand effects in this literature stream, leading to updated brand advertising elasticity estimates. In Chapter 3, I estimate generalizable effects for primary demand advertising elasticities and showcase the benefits of and heterogeneity in a broad advertising meta-regression model that can be used to estimate both primary demand and secondary demand advertising effects under a variety of contexts and conditions. Finally, in Chapters 4 and 5, I distill prior findings in regard to the uses of advertising and other marketing instrument and indicator elasticities and detail how practitioners can utilize these indicators to improve marketing strategy