Extended D = 3 Bargmann supergravity from a Lie algebra expansion

Ver abstrac

El nuevo modelo concesional: hacia el necesario equilibrio entre lo público y lo privado. Las novedades de la Ley 9/2017, de Contratos del Sector Público

Este estudio pretende dar contexto y límites a las reglas de la colaboración público-privada en España, desde la perspectiva de respeto tanto a las competencias públicas, como a los principios de seguridad jurídica y de certeza (que implica la previsibilidad de las decisiones), en un momento donde existen postulados sobre los modos e intensidad de gestión de “servicios públicos” y donde se están adoptando medidas de “preferencia” a favor de ciertas formas de prestación. Desde esta perspectiva, como argumento principal sobre el que pivota la argumentación de este Estudio, conviene realizar una serie de reflexiones de alcance general para contextualizar de forma correcta el debate jurídico y las conclusiones que se expondrán..

Why Citrate Shapes Tetrahedral and Octahedral Colloidal Platinum Nanoparticles in Water

[EN] The performance of many advanced catalytic systems depends not only on the size and composition but also on the specific shape of the metal nanoparticles (NPs) from which they are assembled. In turn, the shape of colloidal NPs depends on the specific capping agent involved in their synthesis, though the mechanism is still poorly understood. Here, supported by electrochemical experiments, Fourier transform infrared spectra, and density functional theory calculations, on well-defined surfaces, we show how a specific capping agent determines the shape of colloidal NPs. Solvated citrate can become simultaneously adsorbed on the Pt(111) surface through three dehydrogenated carboxylic groups, with each one of them in bidentate configuration. On the other two basal planes, citrate can be adsorbed through only two of them. For this reason, under the synthesis conditions, citrate is more favorably adsorbed on the Pt(111) than on the other two basal planes of platinum. This adsorption behavior explains why colloidal platinum NPs of tetrahedral and octahedral shape are produced when citrate is used as the capping agent in water. The mechanism for citrate would also determine the shape of other pure face-centered cubic metals and can inspire the engineering of future capping agents.This work has been financially supported by the MCINN-FEDER (Spain) through project CTQ2016-76221-P.Gisbert-González, J.; Feliu, J.; Ferre Vilaplana, A.; Herrero, E. (2018). Why Citrate Shapes Tetrahedral and Octahedral Colloidal Platinum Nanoparticles in Water. The Journal of Physical Chemistry C. 122(33):19004-19014. https://doi.org/10.1021/acs.jpcc.8b05195S19004190141223

Phylogeographic Triangulation: Using Predator-Prey-Parasite Interactions to Infer Population History from Partial Genetic Information

Phylogeographic studies, which infer population history and dispersal movements from intra-specific spatial genetic variation, require expensive and time-consuming analyses that are not always feasible, especially in the case of rare or endangered species. On the other hand, comparative phylogeography of species involved in close biotic interactions may show congruent patterns depending on the specificity of the relationship. Consequently, the phylogeography of a parasite that needs two hosts to complete its life cycle should reflect population history traits of both hosts. Population movements evidenced by the parasite’s phylogeography that are not reflected in the phylogeography of one of these hosts may thus be attributed to the other host. Using the wild rabbit (Oryctolagus cuniculus) and a parasitic tapeworm (Taenia pisiformis) as an example, we propose comparing the phylogeography of easily available organisms such as game species and their specific heteroxenous parasites to infer population movements of definitive host/predator species, independently of performing genetic analyses on the latter. This may be an interesting approach for indirectly studying the history of species whose phylogeography is difficult to analyse directly

Electrocatalytic enhancement of formic acid oxidation reaction by acetonitrile on well-defined platinum surfaces

Catalysis and Surface Chemistr

Polypharmacy Patterns: Unravelling Systematic Associations between Prescribed Medications

Objectives: The aim of this study was to demonstrate the existence of systematic associations in drug prescription that lead to the establishment of patterns of polypharmacy, and the clinical interpretation of the associations found in each pattern. Methods: A cross-sectional study was conducted based on information obtained from electronic medical records and the primary care pharmacy database in 2008. An exploratory factor analysis of drug dispensing information regarding 79,089 adult patients was performed to identify the patterns of polypharmacy. The analysis was stratified by age and sex. Results: Seven patterns of polypharmacy were identified, which may be classified depending on the type of disease they are intended to treat: cardiovascular, depression-anxiety, acute respiratory infection (ARI), chronic obstructive pulmonary disease (COPD), rhinitis-asthma, pain, and menopause. Some of these patterns revealed a clear clinical consistency and included drugs that are prescribed together for the same clinical indication (i.e., ARI and COPD patterns). Other patterns were more complex but also clinically consistent: in the cardiovascular pattern, drugs for the treatment of known risk factors—such as hypertension or dyslipidemia—were combined with other medications for the treatment of diabetes or established cardiovascular pathology (e.g., antiplatelet agents). Almost all of the patterns included drugs for preventing or treating potential side effects of other drugs in the same pattern. Conclusions: The present study demonstrated the existence of non-random associations in drug prescription, resulting in patterns of polypharmacy that are sound from the pharmacological and clinical viewpoints and that exist in a significant proportion of the population. This finding necessitates future longitudinal studies to confirm some of the proposed causal associations. The information discovered would further the development and/or adaptation of clinical patient guidelines to patients with multimorbidity who are taking multiple drugs

Presencia e influencia de sintomatología sugestiva de trastorno por déficit de atención e hiperactividad en adultos con un trastorno de la conducta alimentaria

Fundamento. La coexistencia de trastornos de la conducta alimentaria (TCA) y del trastorno por déficit de atención e hiperactividad (TDAH) es frecuente. El objetivo del estudio fue cuantificar la presencia de sintomatología TDAH en pacientes adultos con TCA y evaluar posibles correlaciones entre ambas sintomatologías. Material y métodos. Estudio transversal en pacientes con TCA. Se cumplimentaron los cuestionarios Eating Attitudes Test de 40 ítems (EAT-40), Eating Disorder Inventory 3ª edición (EDI-3) y la versión abreviada del Adult ADHD Self-Report Scale (ASRS v1.1). Aquellos pacientes con ≥12 puntos en ASRS v1.1 completaron el cuestionario Attention Déficit Hyperactivity Disorder Rating Scale 4ª edición (ADHD-RS IV). Resultados. El 42,6% de los 108 pacientes incluidos puntuaron ≥12 en el ASRS v1.1. Estos sujetos puntuaron más en bulimia y en algunas escalas de desajuste psicológico del EDI-3, y aquellos con conductas de atracón y/o purga puntuaron más en Trastornos psicobiológicos del EAT-40 y en Insatisfacción corporal y Riesgo de TCA del EDI-3. No hubo diferencias en ADHD-RS IV según fueran cuadros restrictivos puros (n=13) o compulsivo-purgativos (n=33). La sintomatología TDAH correlacionó más con la clínica alimentaria y con el desajuste psicológico general en los casos compulsivo-purgativos. Conclusiones. En población clínica con TCA son frecuentes los síntomas sugestivos de TDAH, más en cuadros con clínica compulsivo-purgativa pero no necesariamente más intensos. La correlación entre TDAH y TCA es mayor en cuadros compulsivo-purgativos. Los síntomas de TDAH conllevan mayor desajuste psicológico y mayor gravedad a nivel alimentario en los cuadros con sintomatología compulsivo-purgativa.Background. The coexistence of eating disorders (ED) and attention deficit hyperactivity disorder (ADHD) is common. The aim of the study was to quantify the presence of ADHD symptoms in adult patients with ED and evaluate any possible correlation between both symptomatologies. Methods. Cross-sectional study of patients with ED. The following questionnaires were completed: the Eating Attitudes Test - 40 items (EAT-40), the Eating Disorder Inventory 3rd edition (EDI-3) and the abbreviated version of the Adult ADHD Self-Report Scale (ASRS v1.1). The patients who scored ≥12 points in ASRS v1.1 completed the Attention Deficit Hyperactivity Disorder Rating Scale (4th edition, ADHD-RS IV). Results. 42.6% of the 108 patients scored ≥12 in the ASRS v1.1. These subjects scored higher in bulimia and in some scales of psychological maladjustment of the EDI-3, and those with binging and/or purging behaviours scored higher in Psychobiological disorders of the EAT-40 and in Body dissatisfaction and Eating disorder risk composite scales of the EDI-3. There were no differences in ADHD-RS IV between pure restrictive syndromes (n=13) and those with binging and/or purging behaviours (n=33). We found that, in cases with binge/purge symptoms, ADHD symptoms correlated higher with ED symptoms and with general psychological maladjustment. Conclusion. ADHD symptoms are common in the clinical population with ED, and more in groups with binge/purge symptoms although they are not necessarily more intense. The correlation between ADHD symptoms and ED is higher in cases with binging and/ or purging behaviours. ADHD symptoms involve more psychological maladjustment and more serious ED symptomatology in cases with binge/purge symptoms

Dedicated versus mainstreaming approaches in local climate plans in Europe

Cities are gaining prominence committing to respond to the threat of climate change, e.g., by developing local climate plans or strategies. However, little is known regarding the approaches and processes of plan development and implementation, or the success and effectiveness of proposed measures. Mainstreaming is regarded as one approach associated with (implementation) success, but the extent of integration of local climate policies and plans in ongoing sectoral and/or development planning is unclear. This paper analyses 885 cities across the 28 European countries to create a first reference baseline on the degree of climate mainstreaming in local climate plans. This will help to compare the benefits of mainstreaming versus dedicated climate plans, looking at policy effectiveness and ultimately delivery of much needed climate change efforts at the city level. All core cities of the European Urban Audit sample were analyzed, and their local climate plans classified as dedicated or mainstreamed in other local policy initiatives. It was found that the degree of mainstreaming is low for mitigation (9% of reviewed cities; 12% of the identified plans) and somewhat higher for adaptation (10% of cities; 29% of plans). In particular horizontal mainstreaming is a major effort for local authorities; an effort that does not necessarily pay off in terms of success of action implementation. This study concludes that climate change issues in local municipalities are best tackled by either, developing a dedicated local climate plan in parallel to a mainstreamed plan or by subsequently developing first the dedicated and later a mainstreaming plan (joint or subsequent “dual track approach”). Cities that currently provide dedicated local climate plans (66% of cities for mitigation; 26% of cities for adaptation) may follow-up with a mainstreaming approach. This promises effective implementation of tangible climate actions as well as subsequent diffusion of climate issues into other local sector policies. The development of only broad sustainability or resilience strategies is seen as critical.We thank the many council representatives that supported the datacollection. Special thanks to Birgit Georgi who helped in setting up this large net work of researchers across the EU-28. We also thank the EU COST Action TU 0902 (ledbyRichardDawson) that established the core research network and the positive engagement and interaction of th emembers of this group. OH is Fellow of the Tyndall Centre for Climate Change Research and was funded by the UK EPSRC LC Transforms: Low Carbon Transitions of Fleet Operations in Metropolitan Sites Project (grant number EP/N010612/1). EKL was supported by the Ministry of Education, Youth and Sports, Czechia, within the National Sustainability Program I (NPU I) (grant number LO1415). DG ac-knowledges support by the Ministry of Education, University and Research (MIUR), Italy ("Departments of Excellence" grant L. 232/2016). HO was supported by the Ministry of Education and Research, Estonia (grantnumberIUT34-17). MO acknowledges funding from the Ministry of Economy and Competitiveness (MINECO), Spain (grant number IJCI-2016-28835). SS acknowledges that CENSE's research is partially funded by the Science Foundation, Portugal (grant number UID/AMB/04085/2019). The paper reflects only the views of the authors. The European Union, the European Environment Agency or other supporting bodies are not liable for any use that may be made of the information that is provided in this manuscript

Chronic Obstructive Pulmonary Disease (COPD) as a disease of early aging: Evidence from the EpiChron Cohort

Background Aging is an important risk factor for most chronic diseases. Patients with COPD develop more comorbidities than non-COPD subjects. We hypothesized that the development of comorbidities characteristically affecting the elderly occur at an earlier age in subjects with the diagnosis of COPD. Methods and findings We included all subjects carrying the diagnosis of COPD (n = 27, 617), and a similar number of age and sex matched individuals without the diagnosis, extracted from the 727, 241 records of individuals 40 years and older included in the EpiChron Cohort (Aragon, Spain). We compared the cumulative number of comorbidities, their prevalence and the mortality risk between both groups. Using network analysis, we explored the connectivity between comorbidities and the most influential comorbidities in both groups. We divided the groups into 5 incremental age categories and compared their comorbidity networks. We then selected those comorbidities known to affect primarily the elderly and compared their prevalence across the 5 age groups. In addition, we replicated the analysis in the smokers'' subgroup to correct for the confounding effect of cigarette smoking. Subjects with COPD had more comorbidities and died at a younger age compared to controls. Comparison of both cohorts across 5 incremental age groups showed that the number of comorbidities, the prevalence of diseases characteristic of aging and network''s density for the COPD group aged 56-65 were similar to those of non-COPD 15 to 20 years older. The findings persisted after adjusting for smoking. Conclusion Multimorbidity increases with age but in patients carrying the diagnosis of COPD, these comorbidities are seen at an earlier age