Large negative lateral shifts due to negative refraction

When a thin structure in which negative refraction occurs (a metallo-dielectric or a photonic crystal) is illuminated by a beam, the reflected and transmitted beam can undergo a large negative lateral shift. This phenomenon can be seen as an interferential enhancement of the geometrical shift and can be considered as a signature of negative refraction

Comment on "Negative refraction in 1D photonic crystals" [Solid State Communications 147 (2008) 157-160]

International audienceIt can be shown that negative refraction cannot occur in one-dimensional photonic crystals oriented as in [1]

Nonlocality in metallo-dielectric multilayers: numerical tools and physical analysis

We provide theoretical and numerical tools to quantitatively study the impact of nonlocality arising from free electrons in metals on the optical properties of metallo-dielectric multilayers. Though effects due to nonlocality are in general quite small, they nevertheless can be important for very thin (typically below 10 nm) metallic layers - as are used in structures characterized by relatively flat dispersion curves. Such structures include those with negative refractive index; hyperbolic meta-materials; and materials with index near zero. We find in all cases that the inclusion of nonlocal effects through application of the hydrodynamic model to the electron response leads to a higher transmission through the considered medium. Finally, we examine the excitation of gap-plasmon resonances, where nonlocality plays a much greater role, and suggest possible routes for experimental investigation

The Effect of Sponsorship to Sports Industry on the Intangibility of Sponsoring Companies of the Eletric Power Sector in Brazil

Este trabalho discute os efeitos do patrocínio à indústria esportiva sobre a intangibilidade das empresas patrocinadoras. A importância da indústria esportiva, a oportunidade de divulgação da marca da patrocinadora, bem como as isenções fiscais previstas na Lei de Responsabilidade Social, vêm impulsionando as firmas a patrocinarem o setor de forma gradual no período mais recente. Porém, poucos são os estudos que discutem os efeitos desse investimento sobre as empresas patrocinadoras. Este trabalho verifica uma faceta desses efeitos, analisando a intangibilidade das empresas brasileiras do setor de energia elétrica de 2007 a 2013. A amostra foi constituída de 21 empresas que têm suas ações negociadas na BM&Fbovespa e que possuem balanços sociais Ibase. A natureza do estudo é quantitativa e os dados foram coletados por meio do banco de dados Economática®, balanços sociais Ibase, relatórios administrativos, relatórios sociais e de sustentabilidade publicados anualmente pelas empresas estudadas. Utilizou-se de regressão múltipla em painel, constatando que o patrocínio ao esporte teve relação positiva com a intangibilidade das empresas patrocinadoras. Os resultados são relevantes, pois contribuem para preencher a lacuna teórica em que a estratégia de patrocínios a indústrias esportivas explica e pode alavancar o grau de intangibilidade das empresas patrocinadoras.This paper discusses the effects of sports industry sponsorship on the intangibility of sponsoring companies. The importance of the sports industry, the opportunity to propagate sponsor’s brand, as well as the tax exemptions allowed by the Social Responsibility Law, has encouraged the companies to gradually sponsor the sector in the most recent years. However, there are few studies that discuss the effects of this investment on the sponsoring companies. This work examines some of these effects, analyzing the intangibility of Brazilian companies in the electric power sector from 2007 to 2013. The sample consisted of 21 companies that have their shares traded on Brazilian stock market and which have Ibase social balance sheets. The nature of this study is quantitative and data were collected with the Economática® database, Ibase social reports, and reports published yearly by the companies, such as administrative, social and sustainability reports. Multiple panel regression was used, evidencing that the sponsorship of the sport industry was positively related to the intangibility of sponsoring companies. The results are relevant as they contribute to fill up the theoretical gap in which the strategy of sport industry sponsoring explain and can leverage the degree of intangibility of companies

Video Edukasi Imobilisasi Fraktur

Video pembelajaran berisikan tentang prosedur pembelajaran Imobilisasi Fraktur. Imobilisasi fraktur merupakan pemberian pertolongan pertama pada kasus traumatology. Imobilisasi yang benar akan sangat bermanfaat dalam mengurangi resiko yang terjadi. Video pembelajaran ini mencantumkan tentang cara pertolongan pertama yang harus diberikan pada patah tulang adalah berupaya agar tulang yang patah tidak saling bergeser (mengusahakan imobilisasi). Imobilisasi dilakukan dengan cara pembidaian yaitu proses pemasangan perban atau pembalut pada bagian tubuh yang cedera atau patah. Tujuannya adalah untuk mengurangi rasa sakit, mencegah pergerakan yang tidak stabil, dan memberikan lingkungan yang optimal bagi tulang untuk menyembuh. https://www.youtube.com/watch?v=cokYPvBcD0

Scalable haloscopes for axion dark matter detection in the 30 µeV range with RADES

RADES (Relic Axion Detector Exploratory Setup) is a project with the goal of directly searching for axion dark matter above the 30μeV scale employing custom-made microwave filters in magnetic dipole fields. Currently RADES is taking data at the LHC dipole of the CAST experiment. In the long term, the RADES cavities are envisioned to take data in the BabyIAXO magnet. In this article we report on the modelling, building and characterisation of an optimised microwave-filter design with alternating irises that exploits maximal coupling to axions while being scalable in length without suffering from mode-mixing. We develop the mathematical formalism and theoretical study which justifies the performance of the chosen design. We also point towards the applicability of this formalism to optimise the MADMAX dielectric haloscopes.We thank Ciaran O’Hare for his generous and publicly available compilation of axion bounds https://github.com/cajohare /AxionLimits/. This work has been funded by the Spanish Ministerio de Economía, Industria y Competitividad – Agencia Estatal de Investigacion (AEI) and Fondo Europeo de Desarrollo Regional (FEDER) under project FPA-2016-76978, and was supported by the CERN Doctoral Studentship programme. The research leading to these results has received funding from the European Research Council and BD, JG and SAC acknowledge support through the European Research Council under grant ERC-2018-StG-802836 (AxScale project). IGI acknowledges also support from the European Research Council (ERC) under grant ERC-2017-AdG-788781 (IAXO+ project). JR has been supported by the Ramon y Cajal Fellowship 2012-10597, the grant PGC2018-095328-B-I00(FEDER/Agencia estatal de investigaci´on) and FSE-DGA2017-2019-E12/7R (Gobierno de Aragón/FEDER) (MINECO/FEDER), the EU through the ITN “Elusives” H2020-MSCA-ITN-2015/674896 and the Deutsche Forschungsgemeinschaft under grant SFB-1258 as a Mercator Fellow. CPG was supported by PROMETEO II/2014/050 of Generalitat Valenciana, FPA2014-57816-P of MINECO and by the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreements 690575 and 674896. AM is supported by the European Research Council under Grant No. 742104. We wish also to thank our colleagues at CAST and at CERN, in particular Marc Thiebert from the coating lab, Sergio Calatroni for many useful discussions, as well as the whole team of the CERN Central Cryogenic Laboratory for their support and advice in specific aspects of the project

Reply to: New Meta- and Mega-analyses of Magnetic Resonance Imaging Findings in Schizophrenia: Do They Really Increase Our Knowledge About the Nature of the Disease Process?

This work was supported by National Institute of Biomedical Imaging and Bioengineering Grant No. U54EB020403 (to the ENIGMA consortium)

Obesity and brain structure in schizophrenia - ENIGMA study in 3021 individuals

Schizophrenia is frequently associated with obesity, which is linked with neurostructural alterations. Yet, we do not understand how the brain correlates of obesity map onto the brain changes in schizophrenia. We obtained MRI-derived brain cortical and subcortical measures and body mass index (BMI) from 1260 individuals with schizophrenia and 1761 controls from 12 independent research sites within the ENIGMA-Schizophrenia Working Group. We jointly modeled the statistical effects of schizophrenia and BMI using mixed effects. BMI was additively associated with structure of many of the same brain regions as schizophrenia, but the cortical and subcortical alterations in schizophrenia were more widespread and pronounced. Both BMI and schizophrenia were primarily associated with changes in cortical thickness, with fewer correlates in surface area. While, BMI was negatively associated with cortical thickness, the significant associations between BMI and surface area or subcortical volumes were positive. Lastly, the brain correlates of obesity were replicated among large studies and closely resembled neurostructural changes in major depressive disorders. We confirmed widespread associations between BMI and brain structure in individuals with schizophrenia. People with both obesity and schizophrenia showed more pronounced brain alterations than people with only one of these conditions. Obesity appears to be a relevant factor which could account for heterogeneity of brain imaging findings and for differences in brain imaging outcomes among people with schizophrenia

First results of the CAST-RADES haloscope search for axions at 34.67 μeV

We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part of the CERN Axion Solar Telescope (CAST), searching for axion dark matter in the 34.67μeV mass range. A radio frequency cavity consisting of 5 sub-cavities coupled by inductive irises took physics data inside the CAST dipole magnet for the first time using this filter-like haloscope geometry. An exclusion limit with a 95% credibility level on the axion-photon coupling constant of gaγ & 4 × 10−13 GeV−1 over a mass range of 34.6738μeV < ma < 34.6771μeV is set. This constitutes a significant improvement over the current strongest limit set by CAST at this mass and is at the same time one of the most sensitive direct searches for an axion dark matter candidate above the mass of 25μeV. The results also demonstrate the feasibility of exploring a wider mass range around the value probed by CAST-RADES in this work using similar coherent resonant cavitiesWe wish to thank our colleagues at CERN, in particular Marc Thiebert from the coating lab, as well as the whole team of the CERN Central Cryogenic Laboratory for their support and advice in speci c aspects of the project. We thank Arefe Abghari for her contributions as the project's summer student during 2018. This work has been funded by the Spanish Agencia Estatal de Investigacion (AEI) and Fondo Europeo de Desarrollo Regional (FEDER) under project FPA-2016-76978-C3-2-P and PID2019-108122GB-C33, and was supported by the CERN Doctoral Studentship programme. The research leading to these results has received funding from the European Research Council and BD, JG and SAC acknowledge support through the European Research Council under grant ERC-2018-StG-802836 (AxScale project). BD also acknowledges fruitful discussions at MIAPP supported by DFG under EXC-2094 { 390783311. IGI acknowledges also support from the European Research Council (ERC) under grant ERC-2017-AdG-788781 (IAXO+ project). JR has been supported by the Ramon y Cajal Fellowship 2012-10597, the grant PGC2018-095328-B-I00(FEDER/Agencia estatal de investigaci on) and FSE-GA2017-2019-E12/7R (Gobierno de Aragón/FEDER) (MINECO/FEDER), the EU through the ITN \Elusives" H2020-MSCA-ITN-2015/674896 and the Deutsche Forschungsgemeinschaft under grant SFB-1258 as a Mercator Fellow. CPG was supported by PROMETEO II/2014/050 of Generalitat Valenciana, FPA2014-57816-P of MINECO and by the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreements 690575 and 674896. AM is supported by the European Research Council under Grant No. 742104. Part of this work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344