Bent-core liquid crystalline cyanostilbenes : fluorescence switching and thermochromism

The authors from ICMA greatly appreciate financial support from the Spanish Government (MINECO-FEDER project MAT2012-38538-C03-01), the Aragon's Government and FSE (project E04) and the Jae PreDoc-CSIC (M. M.-A.) fellowship program.Fluorescent bent-core molecules, bearing one or two cyanostilbene units in the lateral structure and different positions of the cyano group (α- or β-isomers), are described with the aim of modulating the molecular packing and fluorescence properties. These compounds give rise to a variety of crystal polymorphs and bent-core liquid crystalline phases (SmCP, Colr and B6), offering the unique chance to study the fluorescence properties of the cyanostilbene structure in different phases. Experimental and computational studies elucidate geometrical and electronic properties of these bent-core structures but especially the fluorescence properties (spectral positions, quantum yields and decay curves), in a detailed comparison between diluted solutions, in dichloromethane (DCM) or poly(methylmethacrylate) (PMMA), and condensed phases. Quantum yields as high as 70% have been obtained in some diluted solutions (PMMA) and condensed phases. Remarkably, the quantum yield values depend on the position of the cyano group, being higher for β- than for the α-isomers due to the higher radiative rates and lower non-radiative rates of the former. The photophysical characterization in the condensed phase focuses on RT studies with solid samples and different processing, and show that, upon aggregation, interactions between the cyanostilbene groups result in changes of the emission spectra and dynamics compared to the diluted systems in DCM and PMMA, giving rise to H-aggregations of varying strength. Furthermore, the compounds exhibit thermochromism, showing a green-yellow fluorescence in the pristine crystalline phase that changes to blue on heating to the liquid crystal phase. This journal isPostprintPeer reviewe

The association between diet and sleep quality among Spanish university students

While it has long been recognized that diet is a leading behavioral risk factor for human health, recent scientific findings have also suggested that diet and sleep quality may be connected. The purpose of the present study is to evaluate the association between diet and sleep quality among a group of Spanish university students. To do so, a cross-sectional study of 868 students was carried out. Sleep quality was assessed using the Spanish version of the Pittsburgh Sleep Quality Index (PSQI), while diet was assessed using the Spanish Healthy Eating Index (SHEI). The study revealed a noteworthy rate of bad sleepers (51.6%) and students whose diet needed modifications (82.2%). Unhealthy eaters were more likely to have poor sleep quality (aOR = 4.20; CI 95%: 2.07-8.52). The unbalanced intake of vegetables (aOR = 1.63; CI 95%: 1.14-2.34), fruits (aOR = 4.08; CI 95%: 2.90-5.74), dairy products (aOR = 1.96; CI 95%: 1.41-2.72), lean meats (aOR = 1.82; CI 95%: 1.19-2.78), legumes (aOR = 1.43; CI 95%: 1.00-2.02), sweets (aOR = 1.60; CI 95%: 1.13-2.25) and sugary soft drinks (aOR = 1.46; CI 95%: 1.07-1.99) was associated with lower sleep quality

Prevalence and factors associated with problematic internet use in a population of spanish university students

(1) Background: To examine the prevalence, and associated factors of, problematic Internet use in a sample of Spanish university students. (2) Methods: Cross-sectional descriptive study of a convenience sample of 698 university students. Self-esteem, alcohol consumption, perceived social support, depression, anxiety, stress and problematic Internet use were evaluated using the Rosenberg, CAGE, DUKE-UNC-11, DASS-21 and Young’s Internet Addiction Test, respectively. (3) Results: Problematic internet use was reported by 21% of respondents. Risk of problematic Internet use was independently associated with the preferred use of the smartphone, time of exposure to the Internet, less perceived social support, problematic alcohol consumption and symptoms of stress and anxiety. We found significant association between problematic internet use and time of exposure to the Internet, residential status, alcohol consumption, self-esteem, perceived social support and psychological distress, after bivariate analysis. (4) Conclusions: A considerable prevalence of problematic Internet use was found; in our sample problematic Internet use was associated with stress, alcohol consumption, anxiety and perceived social support. Strategies aimed at the early identification of problematic Internet use may lead to an improvement in the psychosocial health of the university student population. © 2021 by the authors. Licensee MDPI, Basel, Switzerland

Riverhood: political ecologies of socionature commoning and translocal struggles for water justice

Mega-damming, pollution and depletion endanger rivers worldwide. Meanwhile, modernist imaginaries of ordering ‘unruly waters and humans’ have become cornerstones of hydraulic-bureaucratic and capitalist development. They separate hydro/social worlds, sideline river-commons cultures, and deepen socio-environmental injustices. But myriad new water justice movements (NWJMs) proliferate: rooted, disruptive, transdisciplinary, multi-scalar coalitions that deploy alternative river–society ontologies, bridge South–North divides, and translate river-enlivening practices from local to global and vice-versa. This paper's framework conceptualizes ‘riverhood’ to engage with NWJMs and river commoning initiatives. We suggest four interrelated ontologies, situating river socionatures as arenas of material, social and symbolic co-production: ‘river-as-ecosociety’, ‘river-as-territory’, ‘river-as-subject’, and ‘river-as-movement’

Proyecto, investigación e innovación en urbanismo, arquitectura y diseño industrial

Actas de congresoLas VII Jornadas de Investigación “Encuentro y Reflexión” y I Jornadas de Investigación de becarios y doctorandos. Proyecto, investigación e innovación en Urbanismo, Arquitectura y Diseño Industrial se centraron en cuatro ejes: el proyecto; la dimensión tecnológica y la gestión; la dimensión social y cultural y la enseñanza en Arquitectura, Urbanismo y Diseño Industrial, sustentados en las líneas prioritarias de investigación definidas epistemológicamente en el Consejo Asesor de Ciencia y Tecnología de esta Universidad Nacional de Córdoba. Con el objetivo de afianzar continuidad, formación y transferencia de métodos, metodología y recursos se incorporó becarios y doctorandos de los Institutos de investigación. La Comisión Honoraria la integraron las tres Secretarias de Investigación de la Facultad, arquitectas Marta Polo, quien fundó y María del Carmen Franchello y Nora Gutiérrez Crespo quienes continuaron la tradición de la buena práctica del debate en la cotidianeidad de la propia Facultad. Los textos que conforman las VII Jornadas son los avances y resultados de las investigaciones realizadas en el bienio 2016-2018.Fil: Novello, María Alejandra. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; ArgentinaFil: Repiso, Luciana. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; ArgentinaFil: Mir, Guillermo. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; ArgentinaFil: Brizuela, Natalia. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; ArgentinaFil: Herrera, Fernanda. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; ArgentinaFil: Períes, Lucas. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; ArgentinaFil: Romo, Claudia. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; ArgentinaFil: Gordillo, Natalia. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; ArgentinaFil: Andrade, Elena Beatriz. Universidad Nacional de Córdoba. Facultad de Arquitectura, Urbanismo y Diseño; Argentin

patrimonio intelectual

Actas de congresoLas VI Jornadas se realizaron con la exposición de ponencias que se incluyeron en cuatro ejes temáticos, que se desarrollaron de modo sucesivo para facilitar la asistencia, el intercambio y el debate, distribuidos en tres jornadas. Los ejes temáticos abordados fueron: 1. La enseñanza como proyecto de investigación. Recursos de enseñanza-aprendizaje como mejoras de la calidad educativa. 2. La experimentación como proyecto de investigación. Del ensayo a la aplicabilidad territorial, urbana, arquitectónica y de diseño industrial. 3. Tiempo y espacio como proyecto de investigación. Sentido, destino y usos del patrimonio construido y simbólico. 4. Idea constructiva, formulación y ejecución como proyecto de investigación. Búsqueda y elaboración de resultados que conforman los proyectos de la arquitectura y el diseño

Prevalence of cardiovascular risk factors in workers in secondary and tertiary sectors of employment

Los reconocimientos médicos de los trabajadores constituyen una oportunidad de detección precoz de factores de riesgo cardiovascular. Por ello se planteó conocer la prevalencia de los factores de riesgo cardiovascular en los trabajadores de dos sectores laborales, estimar el riesgo cardiovascular individual y evaluar las diferencias entre los sectores. Se diseñó un estudio descriptivo retrospectivo de tipo transversal. La población estudiada estaba formada por 15.771 trabajadores que han acudido a reconocimiento médico laboral durante el año 2009. Se estudiaron los siguientes factores de riesgo cardiovascular: edad, sexo, diabetes, hipertensión, tabaquismo, obesidad, actividad física, colesterol, HDL y riesgo cardiovascular. El 44,3% de los trabajadores pertenecen al sector servicios y el 55,7% al sector industria. La edad media fue de 46,27 años. El 73,1% son hombres y el 26,9% mujeres. Las prevalencias estimadas fueron: diabetes 2,9%; hipertensión 3,2%; tabaquismo 43,7%; sobrepeso 38,4% y obesidad el 19,4%; sedentarismo 56,3%; dislipemias (colesterol alterado el 39,5%, elevado el 19,7% y el HDL bajo < de 40mg/dl el 8,3%); y el riesgo cardiovascular (SCORE) es bajo de 0,62% en el sector terciario y 1,03% en el sector secundario. Se han encontrado diferencias significativas entre los sectores: en el sedentarismo, el colesterol HDL y el riesgo cardiovascular, el sector secundario prevalece sobre el sector terciario.The medical examination of workers is an opportunity for the early detection of factors of cardiovascular risk. We designed a retrospective transverse study. The studied population consisted of 15,771 workers who attended medical examinations in 2009. We studied the following cardiovascular risk factors: age, sex, Enfermería Global Nº 28 Octubre 2012 Página 32 diabetes, hypertension, smoking, obesity, physical activity, cholesterol, HDL-cholesterol and cardiovascular risk. 44.3% of workers belong to the service sector and 55.7% to the industrial sector. The mean age was 46.27 years old. The estimated prevalence for diabetes was 2.9%, 3,2% for hypertension, 43,7% for smoking, 38.4% for being overweight, 19,4% for obesity, 56.3% for sedentary lifestyle, 39,5% for altered cholesterol and cardiovascular risk (SCORE) at 0.62% in the service sector and at 1,03% in the industrial sector. We found significant differences between sectors about physical inactivity, HDL and cardiovascular risk

Bio-social factors and perceptions of life with quality: a challenge to the adherence of h i v patients to the antirretroviral treatment

In spite that antirretroviral therapy has contributed to improve life quality among people living with h i v, adherence to the treatment still persists as a major obstacle for therapeutic success. In order to assess the biosocial factors that contributes to adherence to this therapy by people with h i v. In order to evaluate the bio-social aspects that facilitate or obstruct the adherence to the treatment, a qualitative study combining ethnographic research, a hermeneutic approach to narratives, and a situational analysis of life experiences of people living with h i v in Colombia. Two theoretical categories were applied throughout the study: Victoria Camps’ life with quality and Saussure’s auto- and hetero-perception. All of the ten people who took part in the study were male patients who were attending an integral oral health program. The main factors that obstruct the adherence to the therapy were the following: 1) the discourse of the medical team loaded with biomedical jargon; 2) the dosages and side effects of the medications used in Colombia; 3) negative attitudes linked to a poor selfimage, a low social capital, and a low self-esteem; 4) low expectations in regards to a life with quality accompanied by the therapy. Among the factors that promote adherence the following were identified: 1) intra- and inter-personal negotiation processes based on the h i v serum status and the treatment; 2) knowledge about those negotiations by family members, friends, coworkers, and sentimental partners; 3) a positive perception of improvement in life quality while in treatment; 4) expectations of a life with quality depending on the adherence. Nevertheless, it was also found that those factors that contribute or impede adherence change rapidly and produce swinging in the person’s mood. This mood is here understood as a complex feeling concerning life with quality in constant change, both merging individual and social aspects implied in the experience of living with h i v. It is proposed that the mood of the people is a fundamental aspect of adherence, and provided it is constantly changing it represents a challenge for assessments and proposals that aim to improve adherence