ABSTRACT Objective: The present study has as main objective to identify the strategies taken by the municipal managers to adapt to the periods of greatest water difficulties in the northeastern semiarid, more specifically in the city of Doutor Severiano-RN, showing the importance of the development of these strategies in the region. Methodology / Approach: Research were made on the subject to identify which strategies were developed in the municipality, in addition, some field observations were made to identify the municipal public policies developed over the years. Conclusions: It is concluded with this study that it is essential to know the place and seek the best strategy to develop and apply these policies based on the characteristics of each region, considering the importance that they have for the social and economic development of the semiarid populations. Research limitations: The sample was extracted from works that addressed the topic in question, thus making the parallel of discourse between theory and practice. Originality / Value of the article: The study presents the strategies developed in the city of Doutor Severiano, to adapt to the periods of greatest water difficulties in the region, according to the climatic conditions of the place.

The technical porcelain is usually obtained by mixing different raw materials, which are generally clay, kaolin, quartz, and a fluxing agent, in appropriate amounts. These porcelains are used in the production of electric and electronic devices for several applications, ranging from high and low power capacitors to low, medium, high and extra high voltage insulators. In this work, we studied technological properties of dielectric porcelain, obtained from raw materials found in large quantities and excellent quality in the Rio Grande do Norte state in Brazil. Test samples were produced by powder technology for two different compositions: composition A (20% clay, 28% kaolin, 32% feldspar and 20% quartz) and composition B (15% clay, 31% kaolin, 33% feldspar and 21% quartz), and sintered at temperatures, T1=1150°C, T2=1200°C, T3=1250°C, T4=1300°C and T5=1350°C with isotherms P1=0.5 hours, P2=1 hour, P3=1.5 hours and P4=2 hours. Then after sintered, the sample microstructure was characterized by scanning electron microscopy (SEM) and analysis of dielectric strength with direct and alternating voltage. The best results for electrical properties were obtained in temperature of 1250oC for composition A, and confirms the electrotechnical porcelain production feasibility.

In this work aqueous-based tape casting was used to produce Ni-GDC substrates. Rheological properties of the slurries were measured at room temperature. The acrylic-based suspensions showed a pseudoplastic behavior and remained stable and homogeneous. Tapes with thickness between 100 and 220 um were produced and showed smooth and homogeneous surfaces and good flexibility. Sintered tapes showed good density and porosity values.

A ação de plantas, seus fenois e bioativos têm sido alvo de intensa investigação científica, constituindo uma importante fonte de novos fármacos para atualidade. O objetivo deste trabalho direcionou-se em avaliar a atividade antimicrobiana interativa, in vitro, dos extratos do cultivo orgânico da acerola, Malphigia emarginata, frente às cepas padrão Staphylococcus aureus CLITS 2275 FIOCRUZ, e Escherichia coli CLIST 3862 FIOCRUZ. Para tanto foram feita análise físico-química. Os resultados revelaram que os extratos testados da acerola em dois estados de maturação, Verde e Madura, apresentaram atividade frente às cepas de S. aureus e E. coli, com halos de inibição médios 9,7 e 9,5 mm para a madura; e 11,15 e 10,67 mm para a verde; comparados com o controle positivo, álcool etílico a 96 %. Atividade antimicrobiana mostrou-se semelhantes, por não apresentarem diferença significativa (p < 0,05). Nas análises físico-química foram utilizados os extratos verde e maduras, junto com seus insumos, entre os extratos o pH ficou entre 4,07 e 5,23; sólidos solúveis 0,80 a 0,92 %, teor de ácido cítrico 1,40 a 1,43 %; em açúcares redutores 2,29 a 8,92 %, em ácido ascórbico (mg/100g) variou entre 2491,30 e 3406,34. De modo que, o uso dos extratos desse estudo merece um olhar muito cuidadoso pela possibilidade de atuação diretiva abrindo margem tanto pela análise das cepas, quanto os dados obtidos no físico-químico assim sendo um possível meio para elaboração de fármacos.