Conflictos de tenencia de la tierra y sustentabilidad del uso del territorio del Chaco salteño

El avance de la frontera agropecuaria en la región del Chaco salteño, impulsado por el aumento del precio de la soja en el mercado internacional y las políticas de fomento del gobierno, ha agudizado los conflictos de tenencia de la tierra, en particular aquellos debidos a reclamos de comunidades indígenas y familias criollas. Estos conflictos han sido especialmente visibles durante el proceso de Ordenamiento Territorial de Bosques Nativos que exige la Ley Nacional 26.331 (Ley de Bosques). Este trabajo presenta un modelo de Conflictos de Tenencia de la Tierra que fue espacializado mediante la confección de un Sistema de Información Geográfica (SIG). Mediante el SIG se construyeron diversos mapas de conflictividad. Teniendo en cuenta la información obtenida en estos mapas, se plantea la necesidad de incorporar los conflictos de tenencia de la tierra como parte del Ordenamiento Territorial.The advance of the agricultural frontier in the Chaco region of the province of Salta, driven by the rising price of soybeans in the international market and government policies, intensified land tenure conflicts. Conflicts are particularly important where indigenous communities and “criollos” families advanced territorial claims. These conflicts were especially highlighted during the Land Use Planning Process established in National Law 26.331 (The Forest Law). This paper presents a Land Tenure Conflict model that was spatialized using a Geographic Information System (GIS). With this GIS we built several land tenure conflict maps. Taking into account the information from these maps, we suggest that land tenure conflicts should be incorporated in Land Use Planning processes.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Antimalarial Treatment May Have a Time-Dependent Effect on Lupus Survival

Objective. To evaluate the beneficial effect of antimalarial treatment on lupus survival in a large, multiethnic, international longitudinal inception cohort.Methods. Socioeconomic and demographic characteristics, clinical manifestations, classification criteria, laboratory findings, and treatment variables were examined in patients with systemic lupus erythematosus (SLE) from the Grupo Latino Americano de Estudio del Lupus Eritematoso (GLADEL) cohort. the diagnosis of SLE, according to the American College of Rheumatology criteria, was assessed within 2 years of cohort entry. Cause of death was classified as active disease, infection, cardiovascular complications, thrombosis, malignancy, or other cause. Patients were subdivided by antimalarial use, grouped according to those who had received antimalarial drugs for at least 6 consecutive months (user) and those who had received antimalarial drugs for 2 years. Mortality rates among users by duration of antimalarial treatment (per 1,000 person-months of followup) were 3.85 (95% confidence interval [95% CI] 1.41-8.37), 2.7 (95% CI 1.41-4.76), and 0.54 (95% CI 0.37-0.77), respectively, while for nonusers, the mortality rate was 3.07 (95% CI 2.18-4.20) (P for trend < 0.001). After adjustment for potential confounders in a Cox regression model, antimalarial use was associated with a 38% reduction in the mortality rate (hazard ratio 0.62, 95% CI 0.39-0.99).Conclusion. Antimalarial drugs were shown to have a protective effect, possibly in a time-dependent manner, on SLE survival. These results suggest that the use of antimalarial treatment should be recommended for patients with lupus.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Federico Wilhelm Agricola FoundationHosp Prov Rosario, Rheumatol Serv, RA-2000 Rosario, Santa Fe, ArgentinaUniv São Paulo, Fac Med, Hosp Clin, São Paulo, BrazilUniv Nacl Rosario, RA-2000 Rosario, Santa Fe, ArgentinaUniv Antioquia, Medellin, ColombiaHosp Univ San Vicente de Paul, Medellin, ColombiaHosp Interzonal Gen Agudos Dr Oscar Alende, Mar Del Plata, Buenos Aires, ArgentinaHosp Clin Porto Alegre, Porto Alegre, RS, BrazilUniv Fed Rio Grande do Sul, Porto Alegre, RS, BrazilHosp Univ Caracas, Caracas, VenezuelaHosp Salvador, Santiago, ChileUniv Chile, Santiago, ChileHosp Escuela Eva Peron, Rosario, Santa Fe, ArgentinaHosp Gen Occidente Secretaria Salud, Guadalajara, Jalisco, MexicoHosp Nacl Guillermo Almenara Irigoyen, Lima, PeruPontificia Univ Catolica Chile, Santiago, ChileHosp Especialidades Ctr Med Nacl Siglo XXI, Inst Mexicano Seguro Social, Mexico City, DF, MexicoHosp Privado, Ctr Med Cordoba, Cordoba, ArgentinaInst Nacl Cardiol Ignacio Chavez, Mexico City, DF, MexicoUniversidade Federal de São Paulo, São Paulo, BrazilHosp Nacl Clin, Cordoba, ArgentinaUniv Alabama, Birmingham, W Midlands, EnglandUniversidade Federal de São Paulo, São Paulo, BrazilCNPq: 305468/2006-5CNPq: 3031165/2008-1Web of Scienc