Abstract Linked to important pillars of the Brazilian economy, studies related to mining and the use of UAVs (unmanned aerial vehicles) have been gaining ground in recent years, especially related to the geotechnics of dams and precision agriculture. However, the interdisciplinarity needed to carry out more robust analyses are still lacking in some areas, which brings up good opportunities to be explored. In this sense, the present study combined products obtained through different activities and methodologies, aiming at a solution that provides predictability to the mining dam management process, specifically linked to modeling and obtaining data on solid content in the tailings, arising from the processing of bauxite, based on geoprocessing. The activities necessary to achieve the sought objectives covered, briefly: 2021 tailings sampling campaign carried out in the Plateau Disposal System (RP1), laboratory analyses (humidity), aerial survey with Unmanned Aerial Vehicle (UAV), geoprocessing for the extraction of luminosity values of images and statistical analysis of dispersion. As a result, it was observed that the increase in the number of drying cracks (highlighted in the images by dark pixels) is directly related to the drying of the waste (increase in the percentage of solids), whose quadratic model presents an excellent relationship between the values of the pixels in the images and percentage of solids from laboratory data, implying a determination coefficient of 91.74%. Furthermore, gains in security, predictability and economy for the processes stand out, when compared to the traditional methods applied, in addition to an excellent potential to be developed in future studies. unmanned vehicles years agriculture However areas explored sense methodologies process bauxite covered briefly 202 RP1, RP1 RP , (RP1) humidity, humidity (humidity) UAV, UAV (UAV) dispersion result highlighted solids, solids) 9174 91 74 91.74% Furthermore security applied 20 (RP1 (humidity (UAV 917 9 7 91.74 2 (RP 91.7 91.

Este artigo apresenta resultados relacionados ao desenvolvimento de atividades de modelagem exploratória aplicada ao ensino de física quântica com a utilização do objeto de aprendizagem (OA) chamado Pato Quântico. Este OA representa uma metáfora do efeito fotoelétrico e possibilita o cálculo da constante de Planck. Um estudo foi realizado através de um experimento com estudantes do ensino médio. Como resultado, percebeu-se que a construção ou a manipulação de um modelo não depende exclusivamente de como os alunos dominam a lógica empregada na ferramenta computacional, mas sim do entendimento sobre o fenômeno físico e suas habilidades em relacioná-lo com o objetivo da atividade desenvolvida.

This paper presents results related to the development of activities of applied exploratory modelling to Quantum Physics Teaching by using use of the learning object (LO) called the Quantum Duck. The LO is a metaphor to the photoelectric effect and it makes possible the calculation of the constant of Planck. A study was done through an experiment with High School students. As a result, it was noticed that the construction or manipulation of a model does not depend exclusively of the assimilation of the employed logic in the tool computacional, but of the understanding of the the physical phenomenon and their abilities in relating it to the aim of the developed activity.

Mikania glomerata Sprengel é uma importante espécie medicinal popularmente conhecida como guaco, coração-de-jesus, guaco-liso, guaco-cheiroso, cipó-caatinga e erva-de-cobra. Foram estudados os fotoperíodos de 8, 12, 16 e 20 horas. Após 90 dias de tratamento, determinaram-se o peso de matéria seca total, particionada (entre folhas, ramos e raízes), área foliar, razão de área foliar, razão de peso foliar e área foliar específica. O crescimento das plantas variou em função do fotoperíodo, havendo um acréscimo na matéria seca total e particionada até 16 horas de fotoperíodo, seguido de uma queda, quando o fotoperíodo foi aumentado de 16 para 20 horas. A área foliar e o número de folhas foram crescendo até o fotoperíodo de 20 horas. Houve redução da área foliar específica e na razão de área foliar com o aumento do fotoperíodo. Quanto à razão de peso foliar, houve também um decréscimo nesse caráter quando o fotoperíodo aumentou de 8 para 16 horas; em contrapartida, quando o fotoperíodo aumentou de 16 para 20 horas, houve uma tendência de aumento. Foi verificado efeito dos tratamentos no espessamento dos tecidos foliares. O fotoperíodo influenciou positivamente as características associadas ao crescimento, anatomia foliar e fotossintética, como produção de biomassa total, área foliar, número de folhas, particionamento de biomassa para os diversos órgãos da planta.

Mikania glomerata Sprengel, an important medicinal species, popularly known as "guaco", "coração de Jesus", "guaco liso", "guaco cheiroso", "cipó caatinga" and "erva de cobra" was investigated. The photoperiods of 8, 12, 16 and 20 hours were studied. After 90 days' treatment; total dry matter weight, partitioned (among leaves, branches and roots), leaf area, leaf area ratio, leaf weight ratio and specific leaf area were determined. The plants growth changed with photoperiod there was an increase in the total and partitioned dry matter up to 16 hours followed by a fall when photoperiod was increased from 16 to 20 hours. Leaf area and number of leaves have been growing till the 20-hours photoperiod. There was a reduction of the specific leaf area and leaf area ratio with the increase of photoperiod. Concerning leaf weight ratio, there was also a decrease when photoperiod was from 8 to 16 hours, however, when photoperiod was from 16 to 20 hours, there was a trend toward increase. The treatments effect on the thickening of leaf tissue was observed. The photoperiod had positive result in the characteristics associated with growth, foliar anatomy and photosynthetic as: total biomass production, leaf area, leaf number, partitioned biomass to several plant organs.