cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11266466.v1
title: Moringa oleifera seed as a natural coagulant to treat low-turbidity water by in-line filtration

description: Abstract This study evaluated the use of Moringa oleifera (MO) seed as a natural coagulant for the removal of turbidity and apparent color in the water treatment with low initial turbidity through the in-line filtration technique. The morphology and surface charge were investigated by characterization techniques such as optical microscopy, laser particle size, and zeta potential. The cationic proteins of the MO seed were extracted in aqueous solution. The jar test showed the potability standards for turbidity and apparent color were reached in the pH range from 4.0 to 8.5 and dosages ≥ 5 mg L-1 of MO. The dominant coagulation mechanism is adsorption and charge neutralization. This study showed that treating low-turbidity water with MO seed by the in-line filtration technique is possible.
DOI: 10.6084/m9.figshare.7511753.v1
title: Occupy with cinema – writing the history of urban struggles in Ressurgentes – um filme de ação direta

description: Abstract The article analyses the retaking of archives of about 10 years of urban struggles conducted by autonomous movements of Brasília and its articulation through the editing in the documentary Ressurgentes – um filme de ação direta. We are interested in pointing out how the association of these heterogeneous archives with the testimonies of militants beget a peculiar writing of the history of urban problems experienced in Brasilia in the last decade and their possible relations to common events to other cities, such as June’s 2013 manifestations.
DOI: 10.6084/m9.figshare.11313020.v1
title: Decolorization of textile azo dye Reactive Red 239 by the novel strain Shewanella xiamenensis G5-03 isolated from contaminated soil

description: Abstract Shewanella xiamenensis G5-03 isolated from contaminated landfill soil efficiently decolorized five textile azo dyes under static conditions. One of them, Reactive Red 239 (RR239), was completely decolorized at a pH range of 7 to 11 (at 35°C) within 3-6 h. The bacterium was also efficiently decolorized RR239 in a wide temperature range of 25-40°C (at pH 8). The kinetics of RR239 decolorization by G5-03 fitted to the Michaelis-Menten Model (K m = 443.3 mg L-1, V max = 166.7 mg L-1 h-1). The decolorization of RR239 was monitored by UV-Vis and FTIR spectroscopy, which showed significant changes in peak positions when compared to the dye spectrum. Overall, the ability of S. xiamenensis G5-03 to decolorize textile azo dyes in a wide range of temperatures and pH (neutral-alkaline) indicate that this strain is a potential candidate for treating dye-containing effluent.
DOI: 10.6084/m9.figshare.11313026
title: Low-cost wireless sensor network applied to real-time monitoring and control of water consumption in residences

description: Abstract The objective of this work is to explore the implementation of a low-cost real-time monitoring and control of water consumption together with a user feedback interface. Water usage information will be available in a cloud storage and can be accessed through a mobile application. The collected data allows access and supervision of both client- and water concessionaire. Project feasibility is analyzed in terms of hardware and software, as well as each element required for the design. The simulations were carried out with the purpose of verifying system operation, considering the following metrics: transmission rate, signal strength and transmission quality. After the simulations, the hardware and software were integrated, and the final result was presented through a mobile application. This work presents and applies a design and development methodology of Wireless Sensor Network (WSN) using Internet of Things (IoT) technologies and Smart City in water-distribution systems.
DOI: 10.6084/m9.figshare.7513559
title: A Comparative Study of Four Feedback Linearization Schemes for Motion Planning of Fixed-Wing Unmanned Aerial Vehicles

description: ABSTRACT In this paper, different feedback linearization schemes are studied to address the motion planning problem of fixed-wing unmanned aerial vehicles. For a unmanned aerial vehicle model with second-order dynamics, several schemes are studied to make the vehicle (i) fly over and (ii) make a loitering around the objective position. For each scheme, comparisons are made to illustrate the advantages and disadvantages. Lyapunov stability analysis is used to prove the stability of the proposed schemes, and simulation results for some case studies are included to show their feasibility.
DOI: 10.6084/m9.figshare.11266466
title: Moringa oleifera seed as a natural coagulant to treat low-turbidity water by in-line filtration

description: Abstract This study evaluated the use of Moringa oleifera (MO) seed as a natural coagulant for the removal of turbidity and apparent color in the water treatment with low initial turbidity through the in-line filtration technique. The morphology and surface charge were investigated by characterization techniques such as optical microscopy, laser particle size, and zeta potential. The cationic proteins of the MO seed were extracted in aqueous solution. The jar test showed the potability standards for turbidity and apparent color were reached in the pH range from 4.0 to 8.5 and dosages ≥ 5 mg L-1 of MO. The dominant coagulation mechanism is adsorption and charge neutralization. This study showed that treating low-turbidity water with MO seed by the in-line filtration technique is possible.
DOI: 10.6084/m9.figshare.11313020
title: Decolorization of textile azo dye Reactive Red 239 by the novel strain Shewanella xiamenensis G5-03 isolated from contaminated soil

description: Abstract Shewanella xiamenensis G5-03 isolated from contaminated landfill soil efficiently decolorized five textile azo dyes under static conditions. One of them, Reactive Red 239 (RR239), was completely decolorized at a pH range of 7 to 11 (at 35°C) within 3-6 h. The bacterium was also efficiently decolorized RR239 in a wide temperature range of 25-40°C (at pH 8). The kinetics of RR239 decolorization by G5-03 fitted to the Michaelis-Menten Model (K m = 443.3 mg L-1, V max = 166.7 mg L-1 h-1). The decolorization of RR239 was monitored by UV-Vis and FTIR spectroscopy, which showed significant changes in peak positions when compared to the dye spectrum. Overall, the ability of S. xiamenensis G5-03 to decolorize textile azo dyes in a wide range of temperatures and pH (neutral-alkaline) indicate that this strain is a potential candidate for treating dye-containing effluent.
DOI: 10.6084/m9.figshare.11266463.v1
title: Wood ash and water availability in the production of Paiaguás-grass

description: Abstract This study evaluated the production of Paiaguás grass (Urochloa brizantha) as a function of wood-ash doses and water availability in the Cerrado Oxisol. The experiment was carried out in a greenhouse with a randomized block design in a fractioned 5x5 factorial scheme, corresponding to five wood-ash doses (0; 8; 16; 24 and 32 g dm-3) and five soil water-availability scenarios (4; 8; 16; 32; 64 kPa) with four repetitions. The experimental design was based on the modified central compound and consisted of 13 treatments of wood-ash doses (g dm-3) and soil water-availability scenarios (kPa): 0-4; 0-16; 0-64; 8-8; 8-32; 16-4; 16-16; 16-64; 24-8; 24-32; 32-4; 32-16; 32-64. Soil volumetric moisture was monitored daily by means of the Diviner 2000 Capacitance Probe® for soil water replenishment according to the treatments. In 30-day intervals, three cuts were performed in the aerial part of the plants evaluating dry mass of leaves, stems, aerial part, number of leaves and of tillers. Data were subjected to analysis of variance and when significant to regression analysis, both up to 5% of error probability, through the statistical program SISVAR and response surface study using SAS. The combinations of wood ash doses with water soil tensions influence the productive characteristics of Paiaguás grass. Fertilization with wood ash reduces the effect of water stress on Paiaguás grass and this residue may be a viable alternative to partial replacement of mineral fertilization and safe disposal in the environment.
DOI: 10.6084/m9.figshare.7513559.v1
title: A Comparative Study of Four Feedback Linearization Schemes for Motion Planning of Fixed-Wing Unmanned Aerial Vehicles

description: ABSTRACT In this paper, different feedback linearization schemes are studied to address the motion planning problem of fixed-wing unmanned aerial vehicles. For a unmanned aerial vehicle model with second-order dynamics, several schemes are studied to make the vehicle (i) fly over and (ii) make a loitering around the objective position. For each scheme, comparisons are made to illustrate the advantages and disadvantages. Lyapunov stability analysis is used to prove the stability of the proposed schemes, and simulation results for some case studies are included to show their feasibility.
DOI: 10.6084/m9.figshare.12171300
title: Germinación de Baccharis dracunculifolia subsp. tandilensis: caracterización basada en la temperatura, la luz y la salinidad

description: Resumen Baccharis dracunculifolia es un arbusto dioico sudamericano de la familia Asteraceae, de amplia distribución geográfica con potencial uso en la recuperación de áreas degradadas, ornamental y medicinal. Existen dos subespecies: B. dracunculifolia subesp. dracunculifolia y B. dracunculifolia subesp. tandilensis. Esta última es endémica del sistema serrano de Tandilia y fue recientemente registrada su expansión a dunas costeras de la provincia de Buenos Aires. Los objetivos del trabajo fueron caracterizar la germinación de B. dracunculifolia subesp. tandilensis según la temperatura y luz, y comparar la germinación en condiciones salinas de semillas provenientes del ámbito serrano (A) con las de la costa marítima (C). Se pudo comprobar que la germinación responde positivamente a la luz y sin presentar otro tipo de dormición primaria de importancia. El tiempo térmico estimado fue 2500°Ch (104°Cdía) y la temperatura base de 6°C, respondiendo al rango de 20 a 28°C con una germinación óptima y encontrándose termoinhibidas a 35°C. La respuesta a diferentes concentraciones de NaCl fue similar entre las semillas procedentes de A y C: concentraciones de 100 mM de NaCl y superiores fueron fuertemente inhibitorias de la germinación. Se discuten estos resultados relacionándolos con distintas condiciones ambientales y comparándolos con características fisiológicas de la germinación publicadas para la subsp. dracunculifolia y otras especies del género Baccharis.
DOI: 10.6084/m9.figshare.12171300.v1
title: Germinación de Baccharis dracunculifolia subsp. tandilensis: caracterización basada en la temperatura, la luz y la salinidad

description: Resumen Baccharis dracunculifolia es un arbusto dioico sudamericano de la familia Asteraceae, de amplia distribución geográfica con potencial uso en la recuperación de áreas degradadas, ornamental y medicinal. Existen dos subespecies: B. dracunculifolia subesp. dracunculifolia y B. dracunculifolia subesp. tandilensis. Esta última es endémica del sistema serrano de Tandilia y fue recientemente registrada su expansión a dunas costeras de la provincia de Buenos Aires. Los objetivos del trabajo fueron caracterizar la germinación de B. dracunculifolia subesp. tandilensis según la temperatura y luz, y comparar la germinación en condiciones salinas de semillas provenientes del ámbito serrano (A) con las de la costa marítima (C). Se pudo comprobar que la germinación responde positivamente a la luz y sin presentar otro tipo de dormición primaria de importancia. El tiempo térmico estimado fue 2500°Ch (104°Cdía) y la temperatura base de 6°C, respondiendo al rango de 20 a 28°C con una germinación óptima y encontrándose termoinhibidas a 35°C. La respuesta a diferentes concentraciones de NaCl fue similar entre las semillas procedentes de A y C: concentraciones de 100 mM de NaCl y superiores fueron fuertemente inhibitorias de la germinación. Se discuten estos resultados relacionándolos con distintas condiciones ambientales y comparándolos con características fisiológicas de la germinación publicadas para la subsp. dracunculifolia y otras especies del género Baccharis.
DOI: 10.6084/m9.figshare.5671087.v1
title: The Sampaio Dória Reform: teachers, power and figurations

description: Abstract: Teaching reforms are the object of research in Education. The 1920 reform of public teaching in the state of São Paulo was analyzed, led by Sampaio Dória, from a standpoint of legal prescriptions and its implementation in a specific reality, the Normal School of Piracicaba/SP. The implementation counted on a group of teachers, which is our privileged object of research. From such group, we learn the establishment of a power gradient producing social figuration out of recognized pedagogic, literary, artistic and political nationalistic domains. The power and figuration concepts proposed by Norbert Elias provide us with theoretical support. The 1920 reform, a network of interdependent people and its unfolding are analyzed in this article.
DOI: 10.6084/m9.figshare.11266463
title: Wood ash and water availability in the production of Paiaguás-grass

description: Abstract This study evaluated the production of Paiaguás grass (Urochloa brizantha) as a function of wood-ash doses and water availability in the Cerrado Oxisol. The experiment was carried out in a greenhouse with a randomized block design in a fractioned 5x5 factorial scheme, corresponding to five wood-ash doses (0; 8; 16; 24 and 32 g dm-3) and five soil water-availability scenarios (4; 8; 16; 32; 64 kPa) with four repetitions. The experimental design was based on the modified central compound and consisted of 13 treatments of wood-ash doses (g dm-3) and soil water-availability scenarios (kPa): 0-4; 0-16; 0-64; 8-8; 8-32; 16-4; 16-16; 16-64; 24-8; 24-32; 32-4; 32-16; 32-64. Soil volumetric moisture was monitored daily by means of the Diviner 2000 Capacitance Probe® for soil water replenishment according to the treatments. In 30-day intervals, three cuts were performed in the aerial part of the plants evaluating dry mass of leaves, stems, aerial part, number of leaves and of tillers. Data were subjected to analysis of variance and when significant to regression analysis, both up to 5% of error probability, through the statistical program SISVAR and response surface study using SAS. The combinations of wood ash doses with water soil tensions influence the productive characteristics of Paiaguás grass. Fertilization with wood ash reduces the effect of water stress on Paiaguás grass and this residue may be a viable alternative to partial replacement of mineral fertilization and safe disposal in the environment.
DOI: 10.6084/m9.figshare.5671087
title: The Sampaio Dória Reform: teachers, power and figurations

description: Abstract: Teaching reforms are the object of research in Education. The 1920 reform of public teaching in the state of São Paulo was analyzed, led by Sampaio Dória, from a standpoint of legal prescriptions and its implementation in a specific reality, the Normal School of Piracicaba/SP. The implementation counted on a group of teachers, which is our privileged object of research. From such group, we learn the establishment of a power gradient producing social figuration out of recognized pedagogic, literary, artistic and political nationalistic domains. The power and figuration concepts proposed by Norbert Elias provide us with theoretical support. The 1920 reform, a network of interdependent people and its unfolding are analyzed in this article.
DOI: 10.6084/m9.figshare.11265992
title: Numerical Simulation of Debris Flows of the Catastrophic Event of February 2019 in Mirave - Peru

description: Abstract Debris flows are geophysical phenomena, caused by torrential rain, which occur in mountainous areas, characterized by the detachment of slope and riverbed materials and their consequent dislodge through watersheds and streams. Debris flows usually carry sludge, water and rocks, and can destroy everything in their path. On February 8th, 2019, an event of this type occurred and destroyed Mirave’s community in Peru, which was located in the areas of transport and deposition of debris flows. This research presents the modeling and numerical simulation to reproduce the transport and deposition processes of the debris flow that occurred in Mirave. The initiation process of the debris flow in streams was represented by hydrographs obtained from the estimated rain runoff volumes and solid materials found at each evaluated micro watershed. The numerical simulation results show acceptable results in terms of reproduction of the extension of the affectation and deposition areas of solids related to the studied debris flow. The resulting velocity field shows an adequate representation of the erosion zones observed in the area. The model used for evaluating the disaster risk by debris flows can predict and delimit, with acceptable accuracy, the potentially dangerous areas for a mudslide event. The application of the proposed methodology for assessing the disaster risk due to debris flows at watersheds and streams is useful to understand the extent of debris flow affectation during extreme weather events, as well as to develop emergency plans, and to formulate disaster management policies in Peru or in other countries with similar conditions.
DOI: 10.6084/m9.figshare.11265992.v1
title: Numerical Simulation of Debris Flows of the Catastrophic Event of February 2019 in Mirave - Peru

description: Abstract Debris flows are geophysical phenomena, caused by torrential rain, which occur in mountainous areas, characterized by the detachment of slope and riverbed materials and their consequent dislodge through watersheds and streams. Debris flows usually carry sludge, water and rocks, and can destroy everything in their path. On February 8th, 2019, an event of this type occurred and destroyed Mirave’s community in Peru, which was located in the areas of transport and deposition of debris flows. This research presents the modeling and numerical simulation to reproduce the transport and deposition processes of the debris flow that occurred in Mirave. The initiation process of the debris flow in streams was represented by hydrographs obtained from the estimated rain runoff volumes and solid materials found at each evaluated micro watershed. The numerical simulation results show acceptable results in terms of reproduction of the extension of the affectation and deposition areas of solids related to the studied debris flow. The resulting velocity field shows an adequate representation of the erosion zones observed in the area. The model used for evaluating the disaster risk by debris flows can predict and delimit, with acceptable accuracy, the potentially dangerous areas for a mudslide event. The application of the proposed methodology for assessing the disaster risk due to debris flows at watersheds and streams is useful to understand the extent of debris flow affectation during extreme weather events, as well as to develop emergency plans, and to formulate disaster management policies in Peru or in other countries with similar conditions.
DOI: 10.6084/m9.figshare.5696146
title: Best management practices to reduce nitrate pollution in a rural watershed in Germany

description: Abstract Water pollution by nitrogen originates at diffuse and point sources. In surface aquatic systems, nitrate is one of the most problematic forms of nitrogen, causing phytoplankton and macrophyte growth and consequently water eutrophication. This study evaluated whether the Soil and Water Assessment Tool (SWAT) model can simulate nitrate load in a rural watershed in daily and monthly time increments. The study investigated 462 km² of the upper part of the Stör catchment, a typical rural lowland catchment located in Northern Germany. The results showed that simulations of nitrate load at monthly increments are better predictors of observed data than daily simulations. The most effective practices to minimize the NO3-N load were the reduction of nitrogen fertilizer application and the increasing of conservation areas, such as field filter strips.
DOI: 10.6084/m9.figshare.5696146.v1
title: Best management practices to reduce nitrate pollution in a rural watershed in Germany

description: Abstract Water pollution by nitrogen originates at diffuse and point sources. In surface aquatic systems, nitrate is one of the most problematic forms of nitrogen, causing phytoplankton and macrophyte growth and consequently water eutrophication. This study evaluated whether the Soil and Water Assessment Tool (SWAT) model can simulate nitrate load in a rural watershed in daily and monthly time increments. The study investigated 462 km² of the upper part of the Stör catchment, a typical rural lowland catchment located in Northern Germany. The results showed that simulations of nitrate load at monthly increments are better predictors of observed data than daily simulations. The most effective practices to minimize the NO3-N load were the reduction of nitrogen fertilizer application and the increasing of conservation areas, such as field filter strips.
DOI: 10.6084/m9.figshare.7507595
title: Classification of forest types using artificial neural networks and remote sensing data

description: Abstract This study classified forest types using neural network data from a forest inventory provided by the "Florestal e da Biodiversidade do Estado do Pará" (IDEFLOR-BIO), and Bands 3, 4 and 5 of TM from the Landsat satellite. The information from the satellite images was extracted using QGIS software 2.8.1 Wien and was used as a database for training neural networks belonging to the software tools package MATLAB(r) R2011b. The neural networks were trained to classify two forest types: Rain Forest of Lowland Emerging Canopy (Dbe) and Rain Forest of Lowland Emerging Canopy plus Open with palm trees (Dbe + Abp) in the Mamuru Arapiuns glebes of Pará State, and were evaluated in terms of the indicators confusion matrix, overall accuracy, the Kappa coefficient, and the receiver operating characteristics chart (ROC). The best result of classification was obtained by the probabilistic neural network of radial basis function (RBF) newpnn, with an overall accuracy of 88%, and a Kappa coefficient of 76%, showing it to be a very good classifier, and demonstrating the potential of this methodology to provide ecosystem services, particularly in anthropogenic areas in the Amazon that adopt agricultural systems with low carbon emissions.
DOI: 10.6084/m9.figshare.11869128.v1
title: Values of University Students Portugal/Brazil: socio-political dimension

description: ABSTRACT: This study assesses the socio-political values of colleges students (n = 605) Portugal/Brazil, employing a questionnaire on socio-political dimension Values. The results revealed significate differences about fundamental values. We find indifference/scepticism in Portuguese and Brazilian students practice, essentially with regard to the causes of social inequalities. In Brazil are connect from bad luck, laziness and inactivity and in Portugal a short instruction distinguish. This research empowers the implementation of programmes of education for citizenship in academic context.
DOI: 10.6084/m9.figshare.11869131
title: Methodological and Analytical Dimensions of University Extension

description: ABSTRACT: The aim of this article is to present and discuss a methodological proposal to research university extension. This proposal was withdrawn from a historical and conceptual study about the conceptions and practices of extension. A series of methodological dimensions were removed: one who extends; to whom it is intended; what activities materialize it; what kind of knowledge is extended and what are the objectives of this process; because the extension is made; impacts of extension activity; how activities are legitimized; contextual and historical insertion; and the debate about the university’s social function and commitment.