Políticas del activismo mediático en Sud Kivu (R. D. Congo) : mujeres activistas y su uso de blogs, Youtube y Flickr en la construcción de paz

Resumen en inglés. Resumen basado en el de la publicación. Capítulo incluido en el monográfico número 8 de la revista 'Tejuelo. Didáctica de la lengua y la literatura. Educación', titulado 'Comunicación social y educación'

Entre gente “aspra e dura” : advertências de um missionário no Congo e Angola (1713-1723)

A singularidade do relacionamento entre, por um lado, o reino do Kongo e as regiões mbundu vizinhas e, por outro, a acção evangelizadora levada a cabo pelos missionários europeus desde o final do século XV é, hoje, largamente reconhecida. Com pontos de partida diversos e enquadramentos conceptuais por vezes distintos, a generalidade dos autores converge na ideia que, ao longo dos séculos, as cosmologias africanas seleccionaram e reinterpretaram símbolos e rituais cristãos sem que a sua solidez e coerência tenham sido abaladas. Contudo, se existe acordo em relação a essa realidade, o mesmo não pode dizer-se relativamente à identificação da natureza e importância dos factores que intervieram nesse processo. Um desses aspectos remete, segundo alguns autores, para a feição tolerante que a acção missionária teria assumido naquelas paragens, permitindo a compatibilização dos preceitos doutrinais cristãos com as práticas culturais daqueles povos. O texto que se segue procura reflectir sobre esta problemática, sugerindo uma outra abordagem aos relatos e demais registos documentais produzidos pelos missionários. Centra-se, em particular, no exame de um conjunto de regras metodológicas para a acção dos missionários no Kongo e em Angola compiladas por Giuseppe Monari, um missionário capuchinho de Modena que chegou a Luanda no início de 1713. A partir desta análise, procura-se sustentar a tese de que a acção missionária em África não pode ser desligada das representação sobre África e os africanos correntes na Europa e do modo como essas imagens evoluem no contexto da experiência vivencial do missionário na realidade africana. Nessa perspectiva, a evangelização dos africanos é pensada, não sobre uma visão tolerante da realidade cultural africana mas, ao invés, a partir de uma imagem que inferioriza os africanos e reduz a sua existência espiritual a um território de ilusão e aparência, dominado pelas forças volúveis do interesse e da paixão.

A problemática da descentralização : o caso da República Democrática do Congo

Em África, o fracasso do processo de (re)construção do Estado e a debilidade dos mecanismos institucionais de integração nacional levaram muito cedo as comunidades subnacionais como locais a desafiar as soberanias autoritárias instituídas pelos «new comers». A década de noventa gerou a mudança daquele registo, com destaque para África Central. A República Democrática do Congo (ex-Zaire) colocada no ranking dos «failed states», serve hoje de laboratório experimental do sonho democrático qua as províncias congolesas sempre buscaram para afirmar a sua autonomia face ao poder central.

Stress field control of eruption dynamics at a rift volcano: Nyamuragira, D.R.Congo

Using the record of 30 flank eruptions over the last 110 years at Nyamuragira, we have tested the relationship between the eruption dynamics and the local stress field. There are two groups of eruptions based on their duration (< 80days >) that are also clustered in space and time. We find that the eruptions fed by dykes parallel to the East African Rift Valley have longer durations (and larger volumes) than those eruptions fed by dykes with other orientations. This is compatible with a model for compressible magma transported through an elastic-walled dyke in a differential stress field from an over-pressured reservoir (Woods et al., 2006). The observed pattern of eruptive fissures is consistent with a local stress field modified by a northwest-trending, right lateral slip fault that is part of the northern transfer zone of the Kivu Basin rift segment. We have also re-tested with new data the stochastic eruption models for Nyamuragira of Burt et al. (1994). The time-predictable, pressure-threshold model remains the best fit and is consistent with the typically observed declining rate of sulphur dioxide emission during the first few days of eruption with lava emission from a depressurising, closed, crustal reservoir. The 2.4-fold increase in long-term eruption rate that occurred after 1977 is confirmed in the new analysis. Since that change, the record has been dominated by short-duration eruptions fed by dykes perpendicular to the Rift. We suggest that the intrusion of a major dyke during the 1977 volcano-tectonic event at neighbouring Nyiragongo volcano inhibited subsequent dyke formation on the southern flanks of Nyamuragira and this may also have resulted in more dykes reaching the surface elsewhere. Thus that sudden change in output was a result of a changed stress field that forced more of the deep magma supply to the surface. Another volcano-tectonic event in 2002 may also have changed the magma output rate at Nyamuragira.

Co-eruptive and inter-eruptive surface deformation measured by satellite radar interferometry at Nyamuragira volcano, D.R. Congo, 1996 to 2010.

Interferometric Synthetic Aperture Radar (InSAR) measurements of surface deformation at Nyamuragira Volcano between 1996 and 2010 reveal a variety of co-eruptive and inter-eruptive signals. During 7 of the 8 eruptions in this period deformation was measured that is consistent with the emplacement of shallow near-vertical dykes feeding the eruptive fissures and associated with a NNW-trending fissure zone that traverses the summit caldera. Between eruptions the caldera and the summit part of this fissure zone subsided gradually (b3–5 cm/year). We also find evidence of post-eruption subsidence around the sites of the main vents of some flank eruptions (2002, 2004, 2006, and 2010). In the 6 months prior to the 2010 eruption a10-km wide zone centred on the caldera inflated by 1–2 cm. The low magnitude of this signal suggests that the presumed magma reservoir at 3–8 km depth contains highly compressible magma with little stored elastic strain energy. To the north of the caldera the fissure zone splits into WNW and NE branches around a zone that has a distinct InSAR signal. We interpret this zone to represent an elevated, 'stable' block of basement rocks buried by lavas within the Rift Zone.

A late Neoproterozoic paleomagnetic pole for the Congo craton: Tectonic setting, paleomagnetism and geochronology of the Nola dike swarm (Central African Republic)

New structural, geochronological and paleomagnetic data were obtained on dolerite dikes of the Nola region (Central African Republic) at the northern border of the Congo craton. In this region metavolcanic, successions were thrust southward onto the craton during the Panafrican orogenic events. Our structural data reveal at least two structural klippes south of the present-day limits of the Panafrican nappe suggesting that it has once covered the whole Nola region, promoting the pervasive hydrothermal green-schist metamorphism observed in the underlying cratonic basement and also in the intrusive dolerite dikes. Paleomagnetic measurements revealed a stable dual-polarity low-inclination magnetization component in nine dikes (47 samples), carried by pyrrhotite and magnetite. This component corresponds to a paleopole at 304.8 degrees E and 61.8 degrees S (dp = 5.4, dm = 10.7) graded at 2 = 6. Both metamorphism and magnetic resetting were dated by the Ar-40/Ar-39 method on amphibole grains separated from the dikes at 571 +/- 6 Ma. The Nola pole is the first well-dated paleomagnetic pole for the Congo craton between 580 and 550 Ma. It marks a sudden change in direction of the Congo craton apparent polar wander path at the waning stages of the Panafrican orogenic events. (c) 2008 Elsevier B.V. All rights reserved.

Impact assessment and quality analysis of corporate social responsability (CSR) programs of mining companies and their contribution to sustainable development in the communities they operate: case study Tenke Fungurume Mining SA in the Democratic Republic of Congo (DRC)

Purpose – This case study presents an impact assessment of Corporate Social Responsibility (CSR) programs of the TFM Company in order to understand how they contribute to the sustainable development of communities in areas in which they operate. Design/Methodology/Approach - Data for this study was collected using qualitative data methods that included semi-structured interviews and Focus Group Discussions most of them audio and video recorded. Documentary analysis and a field visit were also undertaken for the purpose of quality analysis of the CSR programs on the terrain. Data collected was analyzed using the Seven Questions to sustainability (7Qs) framework, an evaluation tool developed by the Mining, Minerals and Sustainable Development (MMSD) North America chapter. Content analysis method was on the other hand used to examine the interviews and FGDs of the study participants. Findings - Results shows that CSR programs of TFM SA do contribute to community development, as there have been notable changes in the communities’ living conditions. But whether they have contributed to sustainable development is not yet the case as programs that enhance the capacity of communities and other stakeholders to support these projects development beyond the implementation stage and the mines operation lifetime need to be considered and implemented. Originality/Value – In DRC, there is paucity of information of research studies that focus on impact assessment of CSR programs in general and specifically those of mining companies and their contribution to sustainable development of local communities. Many of the available studies cover issues of minerals and conflict or conflict minerals as mostly referred to. This study addressees this gap.

Layer by layer TiO2 thin films and photodegradation of Congo red

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Yield and mineral nutrition of soybean, maize, and congo signal grass as affected by limestone and slag

The objective of this work was to evaluate the efficiency of superficial applicationof limestone and slag, and their effects on soil chemical attributes and on yield and mineral nutrition of soybean, maize, and Congo signal grass (Urochloa ruziziensis). The experiment was carried out in a Rhodic Hapludox under no tillage system. The treatments consisted of the use of limestone or slag (silicates of calcium and magnesium) to correct soilacidity, and of a control treatment without the use of soil correctives. Rates were calculated in order to raise soil base saturation up to 70%. Soybean was sown in November 2006and maize in December 2007. Congo signal grass was sown right after the harvests of soybean and maize, and it was cropped during the offseasons. Soil chemical attributes were evaluated at 6, 12, and 18 months after the application of the corrective materials. Slag isan efficient source for soil acidity correction, being able to raise the exchangeable base levels in the soil profile faster than lime. Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize. Slag is more effective in improving maize grain yield.

Para além da nagocracia: a (re)africanização do camdomblé nação angola-congo em São Paulo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Congo grass grown in rotation with soybean affects phosphorus bound to soil carbon

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)