The mind of the Negro as reflected in letters written during the crisis, 1800-1860,

Includes letters from Frederick Douglass.

Freedom is everybody's job! : the crime of the government against the negro people; summation in the trial of the 11 communist leaders /

Cover title.

Measures of overlap of income distributions of white and Negro families in the United States /

"A United States Department of Commerce publication."

The claims of the Negro, ethnologically considered. : An address before the literary societies of Western Reserve College, at commencement, July 12, 1854. /

Last page blank.

Volcanic setting of the Bajo de la Alumbrera porphyry Cu-Au deposit, Farallon Negro Volcanics, Northwest Argentina

The late Miocene Farallon Negro volcanics, comprising basaltic to rhyodacitic volcano-sedimentary rocks, host the Bajo de la Alumbrera porphyry copper-gold deposit in northwest Argentina. Early studies of the geology of the district have underpinned the general model for porphyry ore deposits where hydrothermal alteration and mineralization develop in and around porphyritic intrusions emplaced at shallow depths (2.5-3.5 km) into stratovolcanic assemblages. The Farallon Negro succession is dominated by thick sequences of volcano-sedimentary breccias, with lavas forming a minor component volumetrically. These volcaniclastic rocks conformably overlie crystalline basement-derived sedimentary rocks deposited in a developing foreland basin southeast of the Puna-Altiplano plateau. Within the Farallon Negro volcanics, volcanogenic accumulations evolved from early mafic to intermediate and silicic compositions. The younger and more silicic rocks are demonstrably coeval and comagmatic with the earliest group of mineralized porphyritic intrusions at Bajo de la Alumbrera. Our analysis of the volcanic stratigraphy and facies architecture of the Farallon Negro volcanics indicates that volcanic eruptions evolved from effusive to mixed effusive and explosive styles, as magma compositions changed to more intermediate and silicic compositions. Air early phase of mafic to intermediate voleanism was characterized by small synsedimentary intrusions with peperitic contacts, and lesser lava units scattered widely throughout the district, and interbedded with thick and extensive successions of coarse-grained sedimentary breccias. These sedimentary breccias formed from numerous debris- and hyperconcentrated flow events. A later phase of silicic volcanism included both effusive eruptions, forming several areally restricted lavas, and explosive eruptions, producing more widely dispersed (up to 5 kin) tuff units, some tip to 30-m thickness in proximal sections. Four key features of the volcanic stratigraphy suggest that the Farallon Negro volcanics need not simply record the construction of a large steep-sided polygenetic stratovolcano: (1) sheetlike, laterally continuous debris-flow and other coarse-grained sedimentary deposits are dominant, particularly in the lower sections; (2) mafic-intermediate composition lavas are volumetrically minor; (3) peperites are present throughout the sequence; and (4) fine-grained lacustrine sandstone-siltstone sequences occur in areas previously thought to be proximal to the summit region of the stratovolcano. Instead, the nature, distribution, and geometry of volcanic and volcaniclastic facies suggest that volcanism occurred as a relatively low relief, multiple-vent volcanic complex at the eastern edge of a broad, > 200-km-wide late Miocene volcanic belt and oil ail active foreland sedimentary basin to the Puna-Altiplano. Volcanism that occurred synchronously with the earliest stages of porphyry-related mineralization at Bajo de la Alumbrera apparently developed in an alluvial to ring plain setting that was distal to larger volcanic edifices.

Poder simbólico alternativo e identidade étnica no Brasil: estudo do Instituto do Negro Padre Batista na sua luta pelos direitos de igualdade racial

Esse trabalho faz parte dos estudos das Ciências Sociais que procuram analisar as relações existentes entre o campo religioso afro-católico e o campo político brasileiro na recomposição das identidades étnicas. É um estudo de um caso . Investiga o Instituto do Negro Padre Batista (INPB). Este é uma Organização Não Governamental (ONG) negra de São Paulo que faz parte do movimento eclesial afro-católico da década de 1980, foi fundado pelo falecido Padre Batista em 1987 para atender às demandas dos afro-descendentes...(AU)

Estratégias de Comunicação e Ativismo Feminino na Esfera Pública Midiática: Estudo sobre a participação de jovens negras no hip-hop, a construção de identidades e sua presença na internet.

Estudo sobre as experiências vividas por mulheres negras que participam do movimento cultural hip-hop. Em particular, buscou-se discutir sobre a organização dos arranjos interativos e as relações de pertencimento, presença e empoderamento, tendo como elo a produção musical e as Tecnologias da Informação e Comunicação (TICs).Desvendar as implicações que as TICs têm com as práticas culturais juvenis contemporâneas de periferia, que funcionam como referência no combate às desigualdades de gênero e do racismo. Investigar as conexões entre as interações sociais, a cultura e ação política na esfera pública. A experiência de identidade, gênero e participação no universo on-line foi construída a partir de leituras sobre as políticas identitárias, teorias feministas e das interações sociais proporcionadas pelas TICs. Os procedimentos metodológicos incluem a pesquisa bibliográfica, entrevistas semi-estruturadas, aplicação de formulários, observação a partir da participação em eventos, além de estudo de sites dos grupos estudados e participação nas redes sociais. Entre os resultados, destaca-se que há o fortalecimento das ações e de ícones na disseminação da cultura hip-hop e que a proposição sobre o ativismo político e social das jovens envolvidas no hip-hop.

Estratégias de Comunicação e Ativismo Feminino na Esfera Pública Midiática: Estudo sobre a participação de jovens negras no hip-hop, a construção de identidades e sua presença na internet

Estudo sobre as experiências vividas por mulheres negras que participam do movimento cultural hip-hop. Em particular, buscou-se discutir sobre a organização dos arranjos interativos e as relações de pertencimento, presença e empoderamento, tendo como elo a produção musical e as Tecnologias da Informação e Comunicação (TICs).Desvendar as implicações que as TICs têm com as práticas culturais juvenis contemporâneas de periferia, que funcionam como referência no combate às desigualdades de gênero e do racismo. Investigar as conexões entre as interações sociais, a cultura e ação política na esfera pública. A experiência de identidade, gênero e participação no universo on-line foi construída a partir de leituras sobre as políticas identitárias, teorias feministas e das interações sociais proporcionadas pelas TICs. Os procedimentos metodológicos incluem a pesquisa bibliográfica, entrevistas semi-estruturadas, aplicação de formulários, observação a partir da participação em eventos, além de estudo de sites dos grupos estudados e participação nas redes sociais. Entre os resultados, destaca-se que há o fortalecimento das ações e de ícones na disseminação da cultura hip-hop e que a proposição sobre o ativismo político e social das jovens envolvidas no hip-hop.

Ativismo Vegano em Natal: uma etnografia de mobilização política, alimentação ética e identidades

This research has vegan groups in the city of Natal-RN as interlocutors, although I also report to other research contexts, such as those located in the cities of Recife (Pernambuco State) and Campina Grande (Paraíba State). Moved by ethical principles based on animal rights, vegans refuse to consume any product with animal origin. To the extent that consumption habits can be considered powerful elements of identification, the relationship between consumption, food, identity, and politics is an important analytical key in the development of this work. As my main theoretical question, I follow the ways by which the vegan discourse (of abolitionist character) takes shape and materializes into actions, demonstrations and political mobilization. Therefore, I aim to present an ethnography of activities performed collectively by these individuals, such as those of a more ludic character (picnics, etc.) as well as those more politically oriented, especially protests and demonstrations in public places.

Aplicação da perlita expandida modificada com ortofenantrolina na remoção do negro de eriocromo T em águas residuais geradas em laboratórios de ensino de química

In this study, we carried out the study of Eriochrome black T removal using expanded perlite modified orthophenanthroline by adsorption technique. The study of the adsorption process was performed by investigating the effect of the initial dye concentration, contact time and pH range of the solution (acidic and alkaline) in the adsorption process, for a so-called synthetic effluent (aqueous solution of black eriochrome T) and a real effluent (generated from the test for determining the water hardness, by complexation titration). The materials were characterized by Thermogravimetry / Differential Thermal Analysis (TG / DTA), absorption spectroscopy in the infrared (IR), X-ray Diffraction (XRD) and scanning electron microscopy (SEM). By analysis of XRD observed thinking on orthophenanthroline the modified expanded perlite. And by IR analysis showed an increase in intensity and a detailed enlargement of the absorption band related to the axial deformation of the OH bond of silanol groups of perlite (Si-OH). In the equilibration time of the study, in the evaluated time range (5-230 min) was not possible to observe the existence of a balance of time, probably attributed to the type of interaction between the Eriochrome black-T and the expanded perlite modified orthophenanthroline, being an interaction of surface origin. In the study effect of the initial concentration of the adsorbate in the case 2,0x10-4 mol / L natural pH (pH 5) gave the highest removal percentage value of eriochrome T black color with 63.74 % removal in 20 minutes of contact. In evaluating the effect of varying the pH of Eriochrome black T solution in the adsorption process, it was found that the more acidic the environment, the greater the percentage stain removal, being a result of acid-base interaction between the adsorbate and the adsorbent. In T Eriochrome black removal study in real effluent we used the optimized conditions by studying with synthetic sewage. The dye removal at pH 10, natural pH of the effluent was no significant reaching the maximum amount of color removal percentage of 8.12%, obtained already at pH 3 with maximum color removal 100.00% of color, once more proving that eriochrome black T and effectively interact better with the adsorbent at acid pH values (pH 5 or 3), and most efficiently at pH 3. thus one can mention that the perlite expanded (an amorphous aluminosilicate naturally acid) modified with orthophenanthroline (one Bronsted base) consists of a master and effective removal of coloring material in the acid-type aqueous solution, the conditions expressed in this study, can be applied as an adsorbent of this dye also mums real effluent.