Intra-group Light in Hickson Compact Groups

We have analyzed the intra-group light component of 3 Hickson Compact Groups (HCG 79, HCG 88 and HCG 95) with detections in two of them: HCG 79, with $46\pm11$ of the total $B$ band luminosity and HCG 95 with $11\pm26$. HCG 88 had no component detected. This component is presumably due to tidally stripped stellar material trapped in the group potential and represents an efficient tool to determine the stage of dynamical evolution and to map its gravitational potential. To detect this low surface brightness structure we have applied the wavelet technique OV\_WAV, which separates the different components of the image according to their spatial characteristic sizes.Comment: Small update on the associated institutions lis

O biogás gerado pelos resíduos pecuários é capaz de reduzir as externalidades negativas? Um estudo de caso na Argentina

Últimamente, Argentina promueve la producción de energías renovables mediante varios programas nacionales. Las actividades agroindustriales generan residuos orgánicos que se podrían a un tratamiento para mitigar las externalidades negativas que causan. En este trabajo se estimaron los resultados propuestos con respecto al volumen de generación de biogás a partir de residuos para establecimientos en la región de Corfo en la provincia de Buenos Aires. Se presenta aquí una alternativa para reducir las externalidades negativas y mejorar el medio ambiente a través de la transformación de la biomasa en energía calórica mediante el estudio de caso de una empresa multiproducto, en la que los residuos pueden ser la entrada para producir una nueva salida (biogás y biofertilizante). A partir del efluente generado por 500 cabezas de ganado se determina que es posible obtener 10,125 m3 de biogás/mes, que la empresa agraria podría vender o utilizar para autoconsumo, con lo cual disminuiría sus costos.Ultimamente, a Argentina vem promovendo energias renováveis ao implementar diversos programas. Atividades agroindustriais geram resíduos orgânicos, que poderiam ser tratados para mitigar as externalidades negativas causadas por eles. Neste trabalho, foram estimados os resultados propostos com respeito ao volume de geração de biogás a partir de resíduos em uma empresa na região do Corfo, na província de Buenos Aires. Apresentamos uma alternativa para reduzir as externalidades negativas e melhorar o meio ambiente mediante a transformação de biomassa em energia calórica, considerando o caso de uma empresa multiproduto, na qual os resíduos podem ser a matéria-prima para elaborar novos produtos (biogás e biofertilizante). Determinamos que, a partir do material gerado por 500 cabeças de gado, é possível obter 10,125 m3 de biogás/mês, que poderiam ser vendidos ou utilizados pela empresa agrária para o consumo próprio, o que diminuiria os gastos.Lately, Argentina has been promoting renewable energies by implementing several programs. Agroindustrial activities generate organic waste, which could be treated to mitigate the negative externalities it causes. In this work the results proposed regarding the volume of biogas generation from waste were estimated for a firm in the Corfo region in the province of Buenos Aires. We present an alternative to reduce negative externalities and improve environment through the transformation of biomass into caloric energy, considering the case of a multiproduct firm, in which waste can be the input to produce a new output (biogas and biofertilizer). We determined that, from the effluent generated by 500 heads of cattle, it is possible to obtain 10.125 m3 of biogas/ month, which could be sold or used by the agrarian firm for self-consumption, diminishing its costs.Fil: Cristiano, Gabriela Silvana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones Económicas y Sociales del Sur. Universidad Nacional del Sur. Departamento de Economía. Instituto de Investigaciones Económicas y Sociales del Sur; ArgentinaFil: Buitrago, Claudia Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; Argentin

Changes in soil quality following poplar short-rotation forestry under different cutting cycles

In the last decade, the change of energy concept induced by global warming and fossil fuel depletion together with the advances in agriculture towards a multifunctional and a more sustainable use of rural areas promoted the development of biomass crops. In this regard, Populus is largely utilised in short-rotation forestry (SRF), as it is known to be a fast-growing tree, producing large yields and having a high energy potential. Most studies focused on economic-productive and energetic aspects of Populus plantations, whereas their impact on soil quality and health have been poorly investigated. In this study, the main soil chemical parameters, microbial biomass and activity were assessed aiming at evaluating the impact of Populus SRF under one, two and three-year cutting cycles (T1, T2 and T3) in comparison with an intensive food cropping system (wheat-soybean rotation, WS). In addition, arbuscular mycorrhizal (AM) fungal inoculum potential was measured using root colonisation (RC) and number of entry points (EP). In the 0-10 cm soil depth, pH, phosphorus (P), total nitrogen (N) and soil organic carbon (SOC) were significantly affected by the management. In comparison with WS, Populus SRF treatments produced significant pH decreases together with N and SOC increases, these last ones ranging from 11 to 34% and from 21 to 57%, respectively. Under T3 soil pH decreased of 0.25 units, while P, N and SOC increased of 10, 34 and 57%, respectively, in comparison with WS. Microbial biomass and soil respiration under SRF showed also mean increases of 71 and 17%, respectively. Under SRF treatments, Lolium perenne, commonly observed in all field plots, was more than twofold colonised by AM fungi in comparison with WS, while the number of EP, observed on Lactuca sativa used as a test plant, showed values ranging from 8 to 21 times higher. The present study shows the potential of a Populus SRF to improve soil chemical, biochemical and biological quality parameters in comparison with an intensive food cropping system

Innovation and Transition in Law: Experiences and Theoretical Settings

This book features a discussion on the modernisation of law and legal change, focusing on the key concepts of "innovation" and "transition". These concepts both appear to be relevant and poorly defined in contemporary legal science. A critical reflection on the heuristic value of these categories seems appropriate, particularly considering their dyadic value. While innovation is increasingly appearing in the present day as being the category in which one looks at the modernisation of law, the concept of transition also seems to be the privileged place of occurrence for such dynamics. This group of Italian and Brazilian scholars contributing to this volume intends to investigate such problems through an interdisciplinary prism. It includes points of view both internal to legal studies - such as the history of law, theory of law, constitutional law, private law and commercial law - and external, such as political philosophy and history of justice and political institutions

Dicephalus dipus dibrachius twins: report of an autopsy case

Dicephalus dipus dibrachius twins are a rare form of conjoined twins. An autopsy of conjoined dicephalus twins is reported. The diagnosis was performed during the pregnancy and the family received a judicial authorization for termination of pregnancy. The preterm newborn progressed to cardiac arrest and died following a court order to terminate the pregnancy. The conceptus presented two arms, two legs, a trunk, two heads, and a single umbilical cord. The two spinal columns presented vertebral fusion in the sacral region. The heart exhibited complex malformations. The external genitalia were female; and cytogenetic analysis confirmed female sex (46, XX). This analysis also corroborated the etiopathogenic hypotheses described for this abnormality, which proposes failures in embryonic formation rather than specific chromosomal alterations. Current identification of cases by ultrasound permits medical management and multidisciplinary action with the family, enabling the legal termination of pregnancy

A MOBILIDADE HUMANA E INTERAÇÕES SOCIAIS NA FAIXA DE FRONTEIRA ENTRE O MUNICÍPIO DE PARANHOS – BR E YPEJHÚ – PY

Este artigo tem como objetivo conhecer a mobilidade humana e as interações sociais na faixa de fronteira entre os municípios de Paranhos - BR e Ypejhú – PY. Para tal foi realizado uma pesquisa bibliográfica que contemplou uma discussão teórica sobre fronteira. Utilizou-se dados secundários de órgão oficiais de cada país (IBGE; DGEEC). Também se realizou um trabalho de campo no mês de julho de 2017, cujas informações coletadas foram registradas em um caderno de campo e ainda registros fotográficos da paisagem. O estudo apontou que as relações sociais ultrapassam o limite da fronteira

Mudança constitucional, luta política e o caminho para a democracia: uma análise do “emendão” de 1982

O artigo propõe uma análise da tramitação de um conjunto de propostas de emenda constitucional apresentado pelo governo federal brasileiro em 1982, que recebeu o título de "emendão". Parte-se do pressuposto de que a alteração do quórum para aprovação de emendas constitucionais (principal medida proposta naquela oportunidade) representou mais uma tentativa do regime militar brasileiro de controlar o tempo do processo de abertura política por meio de modificações constitucionais. Trata-se de uma característica demonstrada em outras situações pelo regime, o que revela uma tendência que suscita interesse para estudos em história constitucional. Nas conclusões são lançadas algumas observações acerca da medida e seus desdobramentos

The challenge of abstract concepts

Abstract concepts (\u201cfreedom\u201d) differ from concrete ones (\u201ccat\u201d), as they do not have a bounded, identifiable, and clearly perceivable referent. The way in which abstract concepts are represented has recently become a topic of intense debate, especially because of the spread of the embodied approach to cognition. Within this framework concepts derive their meaning from the same perception, motor, and emotional systems that are involved in online interaction with the world. Most of the evidence in favor of this view, however, has been gathered with regard to concrete concepts. Given the relevance of abstract concepts for higher-order cognition, we argue that being able to explain how they are represented is a crucial challenge that any theory of cognition needs to address. The aim of this article is to offer a critical review of the latest theories on abstract concepts, focusing on embodied ones. Starting with theories that question the distinction between abstract and concrete concepts, we review theories claiming that abstract concepts are grounded in metaphors, in situations and introspection, and in emotion. We then introduce multiple representation theories, according to which abstract concepts evoke both sensorimotor and linguistic information. We argue that the most promising approach is given by multiple representation views that combine an embodied perspective with the recognition of the importance of linguistic and social experience. We conclude by discussing whether or not a single theoretical framework might be able to explain all different varieties of abstract concepts