Unstable and elusive superconductors

We briefly review earlier and report original experimental results in the context of metastable or possible superconducting materials. We show that applied electric field induces conducting state in Copper Chloride (CuCl) whose characteristics resemble behavior of sliding charge-density-wave(s) (CDW). We discuss whether the sliding CDW or collective transport of similar ordered charge phase(s) may account for the problem of "high-temperature superconductivity" observed in this and other materials, including Cadmium Sulfide (CdS), metal-ammonia solutions, polymers, amorphous carbon and tungsten oxides. We also discuss a local superconductivity that occurs at the surface of graphite and amorphous carbon under deposition of foreign atoms/molecules.Comment: Invited review article published in a special edition on Superconducting Materials in honor of the 95th birthday year of Ted Geballe, edited by M. B. Maple, J. Hirsch, and F. Marsigli

Expografia moderna e contemporânea: Diálogos entre arte e arquitetura

SIAM. Series Iberoamericanas de Museología. Año 3, Vol.

Editorial comment

As músicas do gênero funk ostentação vêm ganhando destaque na mídia brasileira. Suas letras carregam os nomes de diversas marcas de grifes nacionais e internacionais, e direcionam para o consumo dessas marcas globalizadas com o intuito de vender um estilo de vida e normas de comportamento para nossa sociedade contemporânea. O gênero musical da ostentação, portanto, é o foco do estudo. Analisa-se o discurso pronunciado em duas letras de músicas. Em uma delas – Nós de nave – fica evidenciada a falsa promessa de inclusão social. Incentiva-se o consumo desenfreado de produtos de luxo pelo público-alvo para o qual esse nicho musical é voltado: a juventude. Seu mote é a ideia de que a desigualdade social pode ser amenizada quando adquiridos os produtos de luxo das marcas famosas. Já a outra letra – intitulada Resposta ao funk ostentação –, de autoria de Edu Krieger, ganha destaque justamente por recriminar, a cada verso, a alusão à cultura do consumo por meio da ostentação do luxo e abordar seus impactos na cultura e na identidade juvenil.Palavras-chaves: Funk ostentação. Consumo. Marcas de luxo.  Inclusão social. ABSTRACTThe songs of the genre funk ostentation have been gaining prominence in the Brazilian media. His lyrics carry statements of several brands of national and international brands, which govern to a consumption of globalized brands with the intention of selling a lifestyle or way of being in our contemporary society. The ostentation genre will be the focus of study, in which it will analyze the speeches pronounced in two letters of songs of the genre. One of the lyrics is evidenced a "false promise" of social inclusion, when they encourage an unbridled consumption of luxury products, especially to the target audience where the musical rhythms are directed. The other lyrics are highlighted in this study, titled "Response to funk ostentation" by Edu Krieger, in which he reproaches each verse of his song for an allusion to a culture of consumption through the ostentation of luxury, and the Impacts on youth culture and identity by encouraging the consumption of luxury brands as a form of social status and guaranteeing a false social inclusion. The song lyrics for Mc Boy do Chame gain musical intonation when he recounts in his verses that social inequality can be achieved when he boasts the power of money in the conquest of luxury products / brands and famous brands.Keywords:Ostentation funk. Consumism. Luxury brands. Social inclusion

A DESCENTRALIZAÇÃO NA GESTÃO DAS POLÍTICAS SOCIAIS NOS GOVERNOS NACIONAIS DO PT

Resumo Este trabalho objetiva compreender a descentralização no âmbito da gestão das políticas sociais nos governos nacionais do Partido dos Trabalhadores (PT), sobretudo de Luís Inácio Lula da Silva. Ao utilizar como recurso metodológico a pesquisa bibliográfica e documental, procura demonstrar que os governos nacionais vêm concebendo a descentralização como delegação de funções de gestão aos estados e municípios e/ou como uma estratégia de privatização dos serviços sociais. Assim, o trabalho busca demonstrar a manutenção da concentração do poder de decisão e de recursos financeiros na esfera do governo federal

Marine debris ingestion by sea turtles (Testudines) on the Brazilian coast: an underestimated threat?

Assessment of marine debris ingestion by sea turtles is important, especially to ensure their survival. From January to December 2011, 23 specimens of five species of sea turtleswere found dead or dying after being rehabilitated, along the coast of the municipality of Rio de Janeiro, Brazil. To detect the presence of marine debris in the digestive tract of these turtles, we conducted a postmortemexamination from the esophagus until the distal portion of the large intestine for each specimen. Of the total number of turtles, 39% had ingested marine debris such as soft plastic, hard plastic, metal, polyethylene terephthalate (PET) bottle caps, human hair, tampons, and latex condoms. Five of the seven sea turtles species are found along the Brazilian coast, where they feed and breed. A large number of animals are exposed to various kinds of threats, including debris ingestion