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As the climate crisis progresses, droughts and the seasonal availability of fresh water are becoming increasingly common in different regions of the world. One solution to tackle this problem is the reuse of treated wastewater in agriculture. This study was carried out in two significant hydrographic regions located in the southeast of Brazil (Mogi Guaçu River Water Management Unit—UGRHI-09 and Piracicaba River Basin—PRB) that have notable differences in terms of land use and land cover. The aim of this study was to carry out a multi-criteria analysis of a set of environmental attributes in order to classify the areas under study according to their levels of soil suitability and runoff potential. The integrated analysis made it possible to geospatialize prospective regions for reuse, under two specified conditions. In the UGRHI-09, condition 1 corresponds to 3373.24 km2, while condition 2 comprises 286.07 km2, located mainly in the north-western and central-eastern portions of the unit. In the PRB, condition 1 was also more expressive in occupational terms, corresponding to 1447.83 km2; and condition 2 was perceptible in 53.11 km2, predominantly in the central region of the basin. The physical characteristics of the areas studied were decisive in delimiting the areas suitable for the reuse of treated wastewater. [ABSTRACT FROM AUTHOR]

This paper aims to discuss the political subversion produced in public schools in the city of Rio de Janeiro, in front of a curriculum proposal that stands out for homogeneous guidelines for all education network of the city of Rio. In 2009, the Education Municipal Secretariat of Rio de Janeiro presented a policy based on Proof Brazil descriptors for every elementary school and as part of this policy some projects have been developed related to technology, with the aim of disseminating the guidelines curriculum among the Municipal schools in Rio. One such project is the online platform Educopédia where teachers can find digital classes by level of education. The Embassadors’ project has been elaborated linked to Educopédia project for the teachers who work in the Municipal schools in Rio in order to promote the platform in their schools. Thus, based on interviews of Ambassadors, we will discuss the inventions and creations that take place in everyday life of the schools under the foreigner concept (BHABHA, 2013) that allows us to analyze the participation of Ambassadors in the curriculum policy of Rio, in a perspective of disputes by significance of what comes to be a work that links curriculum and technology. In these disputes, we see the power of hybrid production, a shared sense of a number of proposals passing all the time, in an interstitial space that foreigners help to move. [ABSTRACT FROM AUTHOR]

In Brazil, water management in agriculture is an extremely important issue in terms of water security, as well as in other regions of the world. Thus, the study presents a method to measure the potential water demand in the agricultural sector in two pairs (Pair 1 and Pair 2) of hydrographic sub-basins (SB) inserted in the Piracicaba River basin, located in southeastern Brazil. The methods adopted consisted of: using orbital sensor data to identify the types of temporary and permanent crops in the studied areas; preparing the Normalized Difference Vegetation Index to classify temporary crops, in four levels, which represent their development stages; collecting the irrigation need for each permanent and temporary crop through the "Technical Coefficients for Irrigated Agriculture" platform under the control of the National Water Agency; and, calculating the daily Potential Water Demand in the agricultural sector. The potential water demand showed differences between the pairs of the hydrographic sub-basins, due to the extension and the type of the predominant cultures. It is noteworthy that the Córrego dos Coqueiros hydrographic sub-basin is an area where the water supply may be compromised, due to the use of water resources in several sectors, in addition to agriculture. The need for crop irrigation, obtained through the National Water Agency platform associated with the geoprocessing of satellite images, made it possible to measure the daily potential water demand on the hydrographic sub-basin scale, which can assist in the assessment of the hydrographic region and the formulation of measures aimed at the sustainable use of water resources. • Geoprocessing associated need for irrigation to measure agricultural water demand. • Differentiation of crops stages using the Normalized Difference Vegetation Index. • Measuring water demand in sub-basins, can assist in the assessment of water stress. [ABSTRACT FROM AUTHOR]