The Adaptation of Soy-corn Double-cropping to the Brazilian Savanna

TWO REMARKABLE innovations have enabled Brazilian farmers to compete with the soy and corn exports of their US counterparts—breeding soybean varieties for low latitudes using biological nitrogen fixation (BNF) (Hungria, Campos, and Mendes 2001; Alves, Boddey, and Urquiaga 2002; Dobereiner 1997) and the adaptation of a double-cropping soy-corn system for production in the savanna

Analysis of the DG in a network in Angola based on the IEEE 14-bus system

Distributed Generation (DG) has become the main investment of power systems worldwide. This work analyzes the impact of DG on a power system in Angola based on the IEEE 14-bus test, using Matlab/Simulink software. As a result, it was noticed that, despite the increase in the generation capacity, DG causes changes in the voltage of the cutting system due to the change in the active and reactive flows. The critical situation is detected when there is maximum generation in scattering with minimum load, and unbalanced changes may occur in the shear levels of the bars, as well as influencing the recovery of the system when subject to a contingency situation. This work aims to provide initial studies on the impact caused by the introduction of DG in Angola, to show the need to prepare the system to receive this new technology in collaboration with the development of the country

Anti-toxoplasma gondii effect of metalocomplex compounds N0414 and N5814 / Efeito anti-toxoplasma gondii do composto metalocomplexo N0414 e N5814

Toxoplasma gondii, toxoplasmosis agent, is a obligate intracellular protozoan that is able of infecting a broad spectrum of vertebrate’s cells. Toxoplasmosis is a pathology related to severe damages to immunocompromised hosts and its current chemotherapy is quite restricted, being more used the combination of sulfadiazine and pyrimethamine, which is a therapy associated with adverse reactions. This fact highlights the importance of the study of new drugs against Toxoplasma gondii. Has been studied the biological effect of new metallocomplexe compounds, which are inorganic compounds that present promising biological activity as fungicide, bactericide and antiviral. The metallocomplexes, dinuclear ferric compounds N0414 (Fe alfanaftol BMPA) and N5814 (Fe beta-naphthol BMPA) showed activity against Toxoplasma gondii in vitro and it was nontoxic to LLC-MK2 cells, being able to reduce the activity of crucial antioxidant enzymes for the defense of the parasite. In this project, it will be investigated the activities of compounds of the metallocomplexes family as the compounds coordinated to sulfadiazine as the nucleus compound of ferric N0414 and N5814, which showed anti-Toxoplasma gondii activities and were able to eliminate the infection in almost all host cells. In further steps, we will investigate what kind of death the parasite undergoes after the treatment with the compounds through the ultrastructure analysis and the usage of specific markers by fluorescence microscopy. The compounds will also be used in vivo tests with mouse models in the acute phase of toxoplasmosis to prove the efficacy of these compounds

The Adaptation of Soy-corn Double-cropping to the Brazilian Savanna

TWO REMARKABLE innovations have enabled Brazilian farmers to compete with the soy and corn exports of their US counterparts—breeding soybean varieties for low latitudes using biological nitrogen fixation (BNF) (Hungria, Campos, and Mendes 2001; Alves, Boddey, and Urquiaga 2002; Dobereiner 1997) and the adaptation of a double-cropping soy-corn system for production in the savanna.</p