Quench dynamics of the Kondo effect: transport across an impurity coupled to interacting wires

We study the real-time dynamics of the Kondo effect after a quantum quench in which a magnetic impurity is coupled to two metallic Hubbard chains. Using an effective field theory approach, we find that for noninteracting electrons the charge current across the impurity is given by a scaling function that involves the Kondo time. In the interacting case, we show that the Kondo time decreases with the strength of the repulsive interaction and the time dependence of the current reveals signatures of the Kondo effect in a Luttinger liquid. In addition, we verify that the relaxation of the impurity magnetization does not exhibit universal scaling behavior in the perturbative regime below the Kondo time. Our results highlight the role of nonequilibrium dynamics as a valuable tool in the study of quantum impurities in interacting systems

a systematic review

Background: The analysis of the European Union (EU28) health systems' intervention for type 2 diabetes mellitus (T2DM) reports an insufficient combination of legal support, prevention, and early diagnosis. This fact compromises the patient's health outcomes. The inclusion of pharmacy services oriented to T2DM (PS-T2DM) in strategic primary care network's programs could be a solution. However, the different regulatory frameworks that include good pharmaceutical practices and clinical guidelines for T2DM in each EU28 country may be a limitation. Health systems need to know the evolution of these community services and to analyze their operational and regulatory base, both in time and space. Methods: A systematic review was carried out on a qualitative and quantitative approach to the expansion and upgrading of PS-T2DM provided in EU28 pharmacies between 2008 and 2018. Results: The implementation of PS-T2DM in EU28 has increased sharply since 2009 and 2010. Diabetes mellitus (DM) is regulated in 5 countries (Bulgaria, Spain, Italy, Lithuania, and Portugal) and T2DM in 3 (Austria, Latvia, and Romania). Also, in 3 countries (Latvia, Poland, and Spain), pharmacists are involved in implementing guidelines for DM and T2DM, but there is no evidence on the regulation of PS-T2DM. Twenty-two countries showed detailed studies for the PS-T2DM's provision. The type of PS-T2DM implemented in the highest number of EU28 countries was "promoting the rational use of medicines," and the specific subtype T2DM-related more commonly reported was the "glucose measurement." Discussion/Conclusion: Pharmacy disease-oriented services contributed to improving the accessibility, proximity, and equity of primary care for T2DM provided in community pharmacies across the EU28 in recent decades. This promising strategy for improving health outcome sets may be a call to the action of health systems due to its impact consistent with some objectives of universal health coverage for the eradication of DM and T2DM.publishersversionpublishe

Exploring the Policies Applied to Pharmaceutical Care Practice for Type 2 Diabetes over the Last Decade in European Community Pharmacies

Publisher Copyright: © 2021 The Author(s). Published by S. Karger AG.In the last decade (2010-2020), more than half of European countries have improved their health policies within the primary care for type 2 diabetes mellitus. Community pharmacies have been and could continue to be essential actors in this evolution of fighting the disease by providing a set of pharmacotherapeutic follow-up services for the person with diabetes. These services, designated by the Pharmaceutical Group of the European Union as "diabetes management"and "glucose measurement", have aimed to optimize adherence to therapy and improve health outcomes. However, to follow the European guidelines of Good Pharmacy Practice, providing these services implies having a normative framework or a legal basis. Thus, this study sought to analyze the normative and regulatory framework on which community pharmacies in 28 European countries were based on providing this health care over the last decade. Resumo Na última década (2010–2020), mais da metade dos países europeus melhoraram as suas políticas de saúde no âmbito dos cuidados de saúde primários para a diabetes mellitus tipo 2. As farmácias comunitárias foram e poderão continuar a ser importantes intervenientes nesta evolução de combate à doença, através da disponibilização de um conjunto de serviços de acompanhamento farmacoterapêutico para a pessoa com diabetes. Serviços esses, designados, pelo Grupo Farmacêutico da União Europeia por “diabetes management” e “glucose measurement”, visam otimizar a adesão à terapêutica e melhorar os resultados de saúde. No entanto, seguir as directrizes euro­peias das Boas Práticas de Farmácia, para a realização destes serviços, implica dispor de um enquadramento normativo ou uma base jurídica. Assim, este estudo procurou analisar o arcabouço normativo e regulamentar, em que as farmácias comunitárias de 28 países europeus assentaram, para prestar estes cuidados de saúde, durante a última década.publishersversionpublishe

Radial Alignment in Simulated Clusters

Observational evidence for the radial alignment of satellites with their dark matter host has been accumulating steadily in the past few years. The effect is seen over a wide range of scales, from massive clusters of galaxies down to galaxy-sized systems, yet the underlying physical mechanism has still not been established. To this end, we have carried out a detailed analysis of the shapes and orientations of dark matter substructures in high-resolution N-body cosmological simulations. We find a strong tendency for radial alignment of the substructure with its host halo: the distribution of halo major axes is very anisotropic, with the majority pointing towards the center of mass of the host. The alignment peaks once the sub-halo has passed the virial radius of the host for the first time, but is not subsequently diluted, even after the halos have gone through as many as four pericentric passages. This evidence points to the existence of a very rapid dynamical mechanism acting on these systems and we argue that tidal torquing throughout their orbits is the most likely candidate.Comment: v2: 13 pages, 10 figures, ApJ in press. Revisions include a new section (4.2) comparing our results with observations, and a few added reference

A imagem das mulheres nas propagandas da cerveja skol entre a objetifica??o e o empoderamento

23f.O trabalho faz uma abordagem da utiliza??o da imagem das mulheres nas pe?as publicit?rias, especificamente nas propagandas da cerveja Skol. Conceitua-se, assim, a propaganda como uma estrat?gia para atrair e vender produtos ou servi?os. Os objetivos consistem, em analisar historicamente a imagem das mulheres, descrevendo seu perfil antes e ap?s sua exposi??o em algumas propagandas da marca em quest?o, entre os anos de 2000 a 2017 e tra?ar o comportamento da empresa sobre a evolu??o ou involu??o da representa??o das mulheres nas propagandas da Skol. Foi utilizada como metodologia a abordagem explorat?ria, com recortes hist?ricos e bibliogr?ficos. Trata-se de um desenvolvimento te?rico baseado em estudos publicados em artigos cient?ficos. Nessa pesquisa, ? retratada a submiss?o feminina nas propagandas, reflex?es sobre as mulheres objetificadas, observa??es do empoderamento feminino nas novas pe?as publicit?rias e com enfoques sobre a igualdade do g?nero nas propagandas, relatando nessa pesquisa que as mudan?as ocorreram devido a um interesse publicit?rio, protestos e mudan?as culturais

Study of age-related changes in postural control during quiet standing through Linear Discriminant Analysis

<p>Abstract</p> <p>Background</p> <p>The human body adopts a number of strategies to maintain an upright position. The analysis of the human balance allows for the understanding and identification of such strategies. The displacement of the centre of pressure (COP) is a measure that has been successfully employed in studies regarding the postural control. Most of these investigations are related to the analysis of individuals suffering from neuromuscular disorders. Recent studies have shown that the elderly population is growing very fast in many countries all over the world, and therefore, researches that try to understand changes in this group are required. In this context, this study proposes the analysis of the postural control, measured by the displacement of the COP, in groups of young and elderly adults.</p> <p>Methods</p> <p>In total 59 subjects participated of this study. They were divided into seven groups according to their age. The displacement of the COP was collected for each subject standing on a force plate. Two experimental conditions, of 30 seconds each, were investigated: opened eyes and closed eyes. Traditional and recent digital signal processing tools were employed for feature computation from the displacement of the COP. Statistical analyses were carried out in order to identify significant differences between the features computed from the distinct groups that could allow for their discrimination.</p> <p>Results</p> <p>Our results showed that Linear Discrimination Analysis (LDA), which is one of the most popular feature extraction and classifier design techniques, could be successfully employed as a linear transformation, based on the linear combination of standard features for COP analysis, capable of estimating a unique feature, so-called <it>LDA-value</it>, from which it was possible to discriminate the investigated groups and show a high correlation between this feature and age.</p> <p>Conclusion</p> <p>These results show that the analysis of features computed from the displacement of the COP are of great importance in studies trying to understand the ageing process. In particular, the <it>LDA-value </it>showed to be an adequate feature for assessment of changes in the postural control which can be related to functional changes that occur over the ageing.</p