SUSTENTABILIDADE AMBIENTAL E DESIGN DE MODA NA PÓS-MODERNIDADE

Este artigo analisa o contexto histórico social em que surge o conceito de sustentabilidade ambiental, a sua relação com a cultura da pós-modernidade e a adequação do produto de moda ao desenvolvimento sustentável

A moda no contexto da sustentabilidade

Este artigo tem como objetivo levantar o estado da arte da moda no contexto da sustentabilidade. A Moda está relacionada com o novo, com o efêmero, com mudanças cada vez mais rápidas, enquanto expressa em produtos, tem uma importância cultural e econômica significativa para a sociedade, por esta razão deve-se questionar e desafiar as suas convenções e os modelos de negócios. Pois, o sistema de moda tem gerado, em especial, grandes impactos ambientais poucos conhecidos pela sociedade. Logo, para que ocorra efetivamente uma mudança significativa no sistema de moda é fundamental uma mudança cultural na produção e no consumo, reduzindo ou eliminando os impactos socioambientais. Conclui-se que há oportunidades do sistema de moda, principalmente, a indústria de transformação, gerar produtos mais sustentáveis com equilíbrio nas relações socioambientai

Sistema colaborativa para monitoramento e geolocalização de problemas sociais e urbanos

Este artigo apresenta um sistema colaborativo para monitoramento de problemas sociais e urbanos. O trabalho tem por objetivo desenvolver um sistema que mapeie os problemas sociais e urbanos através de geolocalização e disponibilizar estas informações para os usuários que se encontram na região. Os problemas encontrados são relacionados a falta de segurança e informação a respeito das áreas urbanas. Para o desenvolvimento do trabalho foram utilizados conceitos da colaboração, como a gestão de informação colaborativa, pois são os usuários da aplicação que irão gerar as ocorrências e cadastrá-las. Ainda, durante o desenvolvimento foram observadas as características voltadas a percepção de um sistema colaborativo para dispositivos móveis

Amílcar Herrera y la cuestión minera en Argentina

Amílcar Herrera fue unos de los más lúcidos representantes del Pensamiento Latinoamericano en Ciencia, Tecnología, Desarrollo y Dependencia (PLACTED). En este trabajo se propone rescatar la mirada que como geólogo desarrolló en torno a la problemática minera y su relación con la construcción de un Proyecto Nacional y Regional. Con esta óptica y con el objetivo de resignificar y repensar las políticas del sector minero en Argentina, se analizan la relevancia de esta actividad en el país, los conceptos de recursos y reservas minerales y se presentan una serie de propuestas para pensar en posibles rumbos que permitan avanzar sobre nuevas formas de practicar la actividad minera en Argentina y la región.Amílcar Herrera was one of the most lucid representatives of Latin American Thought in Science, Technology, Development and Dependency (PLACTED). In this work it is proposed to rescue the view that as a geologist he developed around the mining problem and its relationship with the construction of a National and Regional Project. With this perspective and with the aim of re-signifying and rethinking the policies of the mining sector in Argentina, the relevance of this activity in the country, the concepts of mineral resources and reserves are analyzed and a series of proposals are presented to think about possible directions that allow progress on new ways of practicing mining in Argentina and the region.Fil: Kohler, María Constanza. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Guerriero, Lucas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Barros Cortes, Facundo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentin

Amílcar Herrera e a questão mineira na Argentina

Amílcar Herrera fue unos de los más lúcidos representantes del Pensamiento Latinoamericano en Ciencia, Tecnología, Desarrollo y Dependencia (PLACTED). En este trabajo se propone rescatar la mirada que como geólogo desarrolló en torno a la problemática minera y su relación con la construcción de un Proyecto Nacional y Regional. Con esta óptica y con el objetivo de resignificar y repensar las políticas del sector minero en Argentina, se analizan la relevancia de esta actividad en el país, los conceptos de recursos y reservas minerales y se presentan una serie de propuestas para pensar en posibles rumbos que permitan avanzar sobre nuevas formas de practicar la actividad minera en Argentina y la región.Amílcar Herrera was one of the most lucid representatives of Latin American Thought in Science, Technology, Development and Dependency (PLACTED). In this work it is proposed to rescue the view that as a geologist he developed around the mining problem and its relationship with the construction of a National and Regional Project. With this perspective and with the aim of re-signifying and rethinking the policies of the mining sector in Argentina, the relevance of this activity in the country, the concepts of mineral resources and reserves are analyzed and a series of proposals are presented to think about possible directions that allow progress on new ways of practicing mining in Argentina and the region.Amílcar Herrera foi um dos mais lúcidos representantes do Pensamento Latino-Americano em Ciência, Tecnologia, Desenvolvimento e Dependência (PLACTED). Neste trabalho, propomos resgatar a perspectiva de Amílcar, que, como geólogo, desenvolveu seu pensamento em torno do problema da mineração e de sua relação com a construção de um Projeto Nacional e Regional. Com essa perspectiva e com o objetivo de ressignificar e repensar as políticas do setor de mineração na Argentina, o presente artigo se volta a pensar a relevância dessa atividade no país, analisa os conceitos de recursos e reservas minerais e apresenta uma série de propostas para pensar possíveis rumos que permitam avançar em novas formas para a prática de mineração na Argentina e região.Cátedra Libre Ciencia, Política y Socieda

Cold-induced changes in plasma signaling lipids are associated with a healthier cardiometabolic profile independently of brown adipose tissue

Cold exposure activates brown adipose tissue (BAT) and potentially improves cardiometabolic health through the secretion of signaling lipids by BAT. Here, we show that 2 h of cold exposure in young adults increases the levels of omega-6 and omega-3 oxylipins, the endocannabinoids (eCBs) anandamide and docosahexaenoylethanolamine, and lysophospholipids containing polyunsaturated fatty acids. Contrarily, it decreases the levels of the eCBs 1-LG and 2-LG and 1-OG and 2-OG, lysophosphatidic acids, and lysophosphatidylethanolamines. Participants overweight or obese show smaller increases in omega-6 and omega-3 oxylipins levels compared to normal weight. We observe that only a small proportion (~4% on average) of the cold-induced changes in the plasma signaling lipids are slightly correlated with BAT volume. However, cold-induced changes in omega-6 and omega-3 oxylipins are negatively correlated with adiposity, glucose homeostasis, lipid profile, and liver parameters. Lastly, a 24-week exercise-based randomized controlled trial does not modify plasma signaling lipid response to cold exposure.Junta de Andalucía, Consejería de Transformación Económica, Industria, Conocimiento y Universidades Dirección General de Investigación y Transferencia del Conocimiento (ref. P18-RT-4455, ref. SOMM17/6107/UGR, and DOC 01151) and European Regional Development Funds (ERDF)Spanish Ministry of Economy and Competitiveness via the Fondo de Investigación Sanitaria del Instituto de Salud Carlos III (PI13/01393)PTA-12264, Retos de la Sociedad (DEP2016-79512-R)Spanish Ministry of Education (FPU19/01609)Fundación Iberoamericana de Nutrición (FINUT)Redes Temáticas de Investigación Cooperativa RETIC (Red SAMID RD16/0022)AstraZeneca HealthCare FoundationUniversity of Granada Plan Propio de Investigación 2016 Excellence actions: Unit of Excellence on Exercise and Health (UCEES)Chinese Scholarship Council fellowships (no. 201707060012 and no. 201607060017)Grant for the requalification of the Spanish university system from the Ministry of Universities of the Government of Spain, financed by the European Union, NextGeneration EU (María Zambrano program, reference RR_C_2021_04

The Spitzer c2d Survey of Weak-Line T Tauri Stars. III. The Transition from Primordial Disks to Debris Disks

We present 3.6 to 70 {\mu}m Spitzer photometry of 154 weak-line T Tauri stars (WTTS) in the Chamaeleon, Lupus, Ophiuchus and Taurus star formation regions, all of which are within 200 pc of the Sun. For a comparative study, we also include 33 classical T Tauri stars (CTTS) which are located in the same star forming regions. Spitzer sensitivities allow us to robustly detect the photosphere in the IRAC bands (3.6 to 8 {\mu}m) and the 24 {\mu}m MIPS band. In the 70 {\mu}m MIPS band, we are able to detect dust emission brighter than roughly 40 times the photosphere. These observations represent the most sensitive WTTS survey in the mid to far infrared to date, and reveal the frequency of outer disks (r = 3-50 AU) around WTTS. The 70 {\mu}m photometry for half the c2d WTTS sample (the on-cloud objects), which were not included in the earlier papers in this series, Padgett et al. (2006) and Cieza et al. (2007), are presented here for the first time. We find a disk frequency of 19% for on-cloud WTTS, but just 5% for off- cloud WTTS, similar to the value reported in the earlier works. WTTS exhibit spectral energy distributions (SEDs) that are quite diverse, spanning the range from optically thick to optically thin disks. Most disks become more tenuous than Ldisk/L* = 2 x 10^-3 in 2 Myr, and more tenuous than Ldisk/L* = 5 x 10^-4 in 4 Myr.Comment: 40 pages, 13 figures, 4 tables. Accepted for publication in ApJ on September 20, 201

Genome sequence of the button mushroom Agaricus bisporus reveals mechanisms governing adaptation to a humic-rich ecological niche

Agaricus bisporus is the model fungus for the adaptation, persistence, and growth in the humic-rich leaf-litter environment. Aside from its ecological role, A. bisporus has been an important component of the human diet for over 200 y and worldwide cultivation of the "button mushroom" forms a multibillion dollar industry. We present two A. bisporus genomes, their gene repertoires and transcript profiles on compost andduringmushroomformation.The genomes encode a full repertoire of polysaccharide-degrading enzymes similar to that of wood-decayers. Comparative transcriptomics of mycelium grown on defined medium, casing-soil, and compost revealed genes encoding enzymes involved in xylan, cellulose, pectin, and protein degradation aremore highly expressed in compost. The striking expansion of heme-thiolate peroxidases and β-etherases is distinctive from Agaricomycotina wood-decayers and suggests a broad attack on decaying lignin and related metabolites found in humic acid-rich environment. Similarly, up-regulation of these genes together with a lignolytic manganese peroxidase, multiple copper radical oxidases, and cytochrome P450s is consistent with challenges posed by complex humic-rich substrates. The gene repertoire and expression of hydrolytic enzymes in A. bisporus is substantially different from the taxonomically related ectomycorrhizal symbiont Laccaria bicolor. A common promoter motif was also identified in genes very highly expressed in humic-rich substrates. These observations reveal genetic and enzymatic mechanisms governing adaptation to the humic-rich ecological niche formed during plant degradation, further defining the critical role such fungi contribute to soil structure and carbon sequestration in terrestrial ecosystems. Genome sequence will expedite mushroom breeding for improved agronomic characteristics

Primordial Circumstellar Disks in Binary Systems: Evidence for Reduced Lifetimes

We combine the results from several multiplicity surveys of pre-main-sequence stars located in four nearby star-forming regions with Spitzer data from three different Legacy Projects. This allows us to construct a sample of 349 targets, including 125 binaries, which we use to to investigate the effect of companions on the evolution of circumstellar disks. We find that the distribution of projected separations of systems with Spitzer excesses is significantly different (P ~2.4e-5, according to the KS test for binaries with separations < 400 AU) from that of systems lacking evidence for a disk. As expected, systems with projected separations < 40 AU are half as likely to retain at least one disk than are systems with projected separations in the 40-400 AU range. These results represent the first statistically significant evidence for a correlation between binary separation and the presence of an inner disk (r ~ 1 AU). Several factors (e.g., the incompleteness of the census of close binaries, the use of unresolved disk indicators, and projection effects) have previously masked this correlation in smaller samples. We discuss the implications of our findings for circumstellar disk lifetimes and the formation of planets in multiple systems.Comment: Accepted for publication by ApJ