cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9599102.v1
title: Effects of the introduction of an omnivorous fish on the biodiversity and functioning of an upland Amazonian lake

description: ABSTRACT The introduction of nonnative species is one of the main threats to freshwater ecosystems. Although omnivory and intraguild predation are common in those systems, little is known about the effects of introduced omnivorous fish on pelagic and littoral communities. This study tested predictions of food-web theory regarding the effects of omnivorous fish introduction on previously fishless lakes in the Amazonian uplands of Serra dos Carajás, Pará, Brazil. The trophic structure of two similar lakes, one with and the other without the introduced omnivorous fish Astyanax bimaculatus, was compared using a data series of biotic variables collected from both lakes twice a year from 2010 to 2013. Zooplankton was more abundant in the lake with fish, and the zooplankton composition differed between lakes. Phytoplankton richness and chlorophyll-a were higher in the lake with the introduced fish than in the fishless lake regardless of phosphorus limitation. For the benthic macroinvertebrate communities, species richness and biomass were higher in the fishless lake. Our results also indicate that A. bimaculatus has the potential to link pelagic and littoral habitats through nutrient cycling. The differences observed between the studied lakes are consistent with predictions from food-web theory regarding the effects of multichain omnivorous fish on trophic dynamics. Despite limitations regarding replication at the ecosystem level, it is possible to infer from our findings that the introduction of an omnivorous fish might have changed lake overall functioning.
DOI: 10.6084/m9.figshare.9599090
title: Study of domestic solid waste of Rio das Cobras indigenous land in the municipality of Nova Laranjeiras, PR

description: Abstract: The objective of this study was to diagnose and quantify the generation of domestic solid waste (RSD) in the Rio das Cobras indigenous land, Nova Laranjeiras, PR. An average of 0.09 kg.habitant-1day-1 was obtained. Although RSD production is small, it is important to highlight the importance of public policies and environmental education actions that minimize the impacts of waste on the environment and the physical and cultural well-being of indigenous peoples.
DOI: 10.6084/m9.figshare.9599096.v1
title: Supply chain risk management at seaport container terminals

description: Abstract Since seaports are common and crucial links in the supply chains of several organizations, the objective of this work was to identify what risks a port can offer to the organizations in its chain and how they are treated by the port’s managers. An exploratory survey was carried out using semi-structured interviews with employees of the company that operates the container and coal terminal of the second largest Brazilian port. The results revealed there is no structured risk management process by the port administration, but several actions taken revealed concern for reaction to risk situations. This highlights the benefits of clarifying the issues, contributing to the literature and assisting professionals in structuring a supply chain risk management process.
DOI: 10.6084/m9.figshare.9599087
title: Segurança pública como simulacro de democracia no Brasil

description: abstract This paper aims to understand the historical continuance of lethal violence as one of the most striking social characteristics of Brazil. The main argument suggests that preventing and tackling of homicides - understood in a broad sense that includes all intentional murders - are political and institutional operations ensuing from a symbolic simulacrum that causes incremental initiatives to fail to reach the architecture of institutions of criminal justice and public security. This simulacrum leads the police and other institutions of the criminal justice system to continue operating from a core of criminal policies that do not comply with the democratic public security project, i.e., with the protection of life and civil and human rights envisioned by the 1988 Constitution.
DOI: 10.6084/m9.figshare.9599084
title: Sustainability in residential building in the municipality of Dourados, MS

description: Abstract: This paper presents two alternative systems are designed for a residential building, already completed, in order to supply the consumption of water and electricity in the common areas. The first system captures rainwater for later use with non-potable purposes. In the second system, photovoltaic solar power generation network-integrated, the main objective was to supply the electric power consumption in the common areas of the building.
DOI: 10.6084/m9.figshare.9599087.v1
title: Segurança pública como simulacro de democracia no Brasil

description: abstract This paper aims to understand the historical continuance of lethal violence as one of the most striking social characteristics of Brazil. The main argument suggests that preventing and tackling of homicides - understood in a broad sense that includes all intentional murders - are political and institutional operations ensuing from a symbolic simulacrum that causes incremental initiatives to fail to reach the architecture of institutions of criminal justice and public security. This simulacrum leads the police and other institutions of the criminal justice system to continue operating from a core of criminal policies that do not comply with the democratic public security project, i.e., with the protection of life and civil and human rights envisioned by the 1988 Constitution.
DOI: 10.6084/m9.figshare.9599090.v1
title: Study of domestic solid waste of Rio das Cobras indigenous land in the municipality of Nova Laranjeiras, PR

description: Abstract: The objective of this study was to diagnose and quantify the generation of domestic solid waste (RSD) in the Rio das Cobras indigenous land, Nova Laranjeiras, PR. An average of 0.09 kg.habitant-1day-1 was obtained. Although RSD production is small, it is important to highlight the importance of public policies and environmental education actions that minimize the impacts of waste on the environment and the physical and cultural well-being of indigenous peoples.
DOI: 10.6084/m9.figshare.9599081
title: The educational investment return evolution in Brazil during the 2000s

description: Abstract: Education is a relevant and current issue, since through it positive social changes are possible. Departing from that the aim of this paper it to analyze the educational investment return evolution in Brazil during the 2000s. For this purpose, we used the 2002-2003 and 2008-2009 biennial Household Budget Survey dataset. The aim is to contribute to the understanding of the effects of educational advances in the context of the reduction of income inequality. The results show that the return of education has decreased. In addition, the social differences between skin color, sex and in urban and rural areas remain present.
DOI: 10.6084/m9.figshare.9599084.v1
title: Sustainability in residential building in the municipality of Dourados, MS

description: Abstract: This paper presents two alternative systems are designed for a residential building, already completed, in order to supply the consumption of water and electricity in the common areas. The first system captures rainwater for later use with non-potable purposes. In the second system, photovoltaic solar power generation network-integrated, the main objective was to supply the electric power consumption in the common areas of the building.
DOI: 10.6084/m9.figshare.9599072
title: WEAR QUANTIFICATION OF BASAL CUTTING KNIVES IN SUGARCANE HARVESTING

description: ABSTRACT The mechanized harvesting of sugarcane has increased exponentially in recent years because of the gradual prohibition of burning on the cane fields in mechanizable and non-mechanizable areas. This study aimed to evaluate the wear of the basal cutting knives in two different mechanized sugarcane harvesters, through statistical process control. The experiment was conducted in Cravinhos, São Paulo, in an agricultural area, on July 25, 26, and 27, 2016. Two harvesters with different basal cutting mechanisms were evaluated: harvester A—Model BE1035e (conventional type knife), and harvester B—Model A8800 (racket type knife). The experimental design was completely randomized with two treatments. The wear was quantified by measuring the thickness increase and width losses of each knife, and it was evaluated for each harvester every 2 hours, during 3 days of operation. Data were evaluated using descriptive statistics and statistical process control. The harvester B model (racket knife) presented lower variability in the cutting width and stability in the cutting width of the knives. The harvester A model (conventional knife) presented greater wear in the width, but less variability in the thickness of the cutting wire.
DOI: 10.6084/m9.figshare.9599078
title: Causes of death and discard of donated corneal tissues: Federal District eye bank analysis 2014 -2017

description: Abstract Objective: The aim of this study is to identify the causes for discarding corneas at the Eye Bank of the Federal District in Brasilia, Brazil, and describe the social and demographic variables and Causa Mortis of cornea donors from 2014 to 2017. Methods: We conducted an exploratory and social-epidemiologic descriptive study regarding cornea donation. The data base information was obtained from the corneal donor's medical records analysis. All of the potential donors' records (cause of death, cause of cornea discard, month of donation, age, gender, and time of death, corneal enucleation and preservation), from 2014 to 2017 were included in the study. Results: We looked at 1,574 corneal donor notifications. Demographic characteristics displayed significant differences in gender distribution (male, 74.8% and female, 25.2%), and the average donor age was 40 ± 15.9 years. 25% of the causes of death were from cardiovascular disease followed by 19.6% from sharp or blunt instrument injury, 14.2% resulted from multiple traumas. We described 3,074 donated corneas from the DF Eye Bank, where 2.6% has not been uptaken. Of those 3,074 corneal tissues, nearly 60% (n=1,836) have been transplanted and 40% (n=1,238) were discarded. Regarding the causes of discard, 68% (n=841) were due to positive or indeterminate serological blood tests and 39% (n=486) because of matureness (expired medium guaranteed period of corneal preservation). Conclusions: Specific issues such as violent causes of death, gender disproportion and total time of corneal processing can be better managed to reduce procurement times, and availability, of corneal tissue for transplantation.
DOI: 10.6084/m9.figshare.9599081.v1
title: The educational investment return evolution in Brazil during the 2000s

description: Abstract: Education is a relevant and current issue, since through it positive social changes are possible. Departing from that the aim of this paper it to analyze the educational investment return evolution in Brazil during the 2000s. For this purpose, we used the 2002-2003 and 2008-2009 biennial Household Budget Survey dataset. The aim is to contribute to the understanding of the effects of educational advances in the context of the reduction of income inequality. The results show that the return of education has decreased. In addition, the social differences between skin color, sex and in urban and rural areas remain present.
DOI: 10.6084/m9.figshare.9599072.v1
title: WEAR QUANTIFICATION OF BASAL CUTTING KNIVES IN SUGARCANE HARVESTING

description: ABSTRACT The mechanized harvesting of sugarcane has increased exponentially in recent years because of the gradual prohibition of burning on the cane fields in mechanizable and non-mechanizable areas. This study aimed to evaluate the wear of the basal cutting knives in two different mechanized sugarcane harvesters, through statistical process control. The experiment was conducted in Cravinhos, São Paulo, in an agricultural area, on July 25, 26, and 27, 2016. Two harvesters with different basal cutting mechanisms were evaluated: harvester A—Model BE1035e (conventional type knife), and harvester B—Model A8800 (racket type knife). The experimental design was completely randomized with two treatments. The wear was quantified by measuring the thickness increase and width losses of each knife, and it was evaluated for each harvester every 2 hours, during 3 days of operation. Data were evaluated using descriptive statistics and statistical process control. The harvester B model (racket knife) presented lower variability in the cutting width and stability in the cutting width of the knives. The harvester A model (conventional knife) presented greater wear in the width, but less variability in the thickness of the cutting wire.
DOI: 10.6084/m9.figshare.9599066
title: MANAGEMENT SYSTEMS: SOIL COVER AND COMPACTION, LONGITUDINAL DISTRIBUTION, AND YIELD OF SOYBEAN CROP

description: ABSTRACT The way the soil is managed can influence its structuring and, consequently, crop yield. Thus, this study aimed to evaluate the effect caused by the management systems plowing followed by two intermediate harrowing operations, intermediate harrowing, chiseling, chiseling followed by intermediate harrowing, cross chiseling followed by intermediate harrowing, and non-tillage on soil and agronomic attributes of the soybean crop. A randomized block design with four replications was used. The percentage of soil cover, soil resistance to penetration, number of plants per meter, longitudinal distribution of seedlings, and soybean yield were evaluated. The data were submitted to analysis of variance by the Tukey test at 5% probability, and use of geostatistics for soil resistance to penetration. The system without soil tillage provides the best straw preservation but affects the longitudinal distribution of soybean seedlings. The use of intermediate harrowing for managing crop residues or soil tillage leads to the greatest compaction problems. Chiseling is efficient in maintaining compaction values below critical values up to a depth of 0.20 m when working at 0.35 m. Soil yield is not affected by soil management systems when the pluviometric regime is adequate to crop requirements.
DOI: 10.6084/m9.figshare.9599069
title: PEDOFUNCTIONS APPLIED TO THE LEAST LIMITING WATER RANGE TO ESTIMATE SOIL WATER CONTENT AT SPECIFIC POTENTIALS

description: ABSTRACT The least limiting water range (LLWR) is a soil physical quality indicator that receives much attention. It has been criticized and put to the test regarding mathematical models that compose it since they describe the behavior of soil physical attributes in a simplified way. This study aimed to assess the efficiency of some pedofunctions proposed in the literature and artificial neural networks on the accuracy in predicting soil water retention at potentials equivalent to field capacity (θFC) and permanent wilting point (θPWP). In other words, to apply the best models to LLWR of two soil types (Oxisol and Ultisol) and verify changes in their structure. The results indicated that pedofunctions using sand, silt, clay, bulk density, and soil organic matter contents are more efficient in estimating θFC and θPWP. However, the use of multiple linear regression models to predict θFC values below 0.20 m3 m−3 may present a slight tendency to overestimate it, which is not observed in the neural networks. As in R2, equations from neural networks were more efficient in estimating θFC and θPWP. Pedofunctions used to calculate LLWR differ in the establishment of the critical soil bulk density, exposing the limitations of the model.
DOI: 10.6084/m9.figshare.9599066.v1
title: MANAGEMENT SYSTEMS: SOIL COVER AND COMPACTION, LONGITUDINAL DISTRIBUTION, AND YIELD OF SOYBEAN CROP

description: ABSTRACT The way the soil is managed can influence its structuring and, consequently, crop yield. Thus, this study aimed to evaluate the effect caused by the management systems plowing followed by two intermediate harrowing operations, intermediate harrowing, chiseling, chiseling followed by intermediate harrowing, cross chiseling followed by intermediate harrowing, and non-tillage on soil and agronomic attributes of the soybean crop. A randomized block design with four replications was used. The percentage of soil cover, soil resistance to penetration, number of plants per meter, longitudinal distribution of seedlings, and soybean yield were evaluated. The data were submitted to analysis of variance by the Tukey test at 5% probability, and use of geostatistics for soil resistance to penetration. The system without soil tillage provides the best straw preservation but affects the longitudinal distribution of soybean seedlings. The use of intermediate harrowing for managing crop residues or soil tillage leads to the greatest compaction problems. Chiseling is efficient in maintaining compaction values below critical values up to a depth of 0.20 m when working at 0.35 m. Soil yield is not affected by soil management systems when the pluviometric regime is adequate to crop requirements.
DOI: 10.6084/m9.figshare.9599078.v1
title: Causes of death and discard of donated corneal tissues: Federal District eye bank analysis 2014 -2017

description: Abstract Objective: The aim of this study is to identify the causes for discarding corneas at the Eye Bank of the Federal District in Brasilia, Brazil, and describe the social and demographic variables and Causa Mortis of cornea donors from 2014 to 2017. Methods: We conducted an exploratory and social-epidemiologic descriptive study regarding cornea donation. The data base information was obtained from the corneal donor's medical records analysis. All of the potential donors' records (cause of death, cause of cornea discard, month of donation, age, gender, and time of death, corneal enucleation and preservation), from 2014 to 2017 were included in the study. Results: We looked at 1,574 corneal donor notifications. Demographic characteristics displayed significant differences in gender distribution (male, 74.8% and female, 25.2%), and the average donor age was 40 ± 15.9 years. 25% of the causes of death were from cardiovascular disease followed by 19.6% from sharp or blunt instrument injury, 14.2% resulted from multiple traumas. We described 3,074 donated corneas from the DF Eye Bank, where 2.6% has not been uptaken. Of those 3,074 corneal tissues, nearly 60% (n=1,836) have been transplanted and 40% (n=1,238) were discarded. Regarding the causes of discard, 68% (n=841) were due to positive or indeterminate serological blood tests and 39% (n=486) because of matureness (expired medium guaranteed period of corneal preservation). Conclusions: Specific issues such as violent causes of death, gender disproportion and total time of corneal processing can be better managed to reduce procurement times, and availability, of corneal tissue for transplantation.
DOI: 10.6084/m9.figshare.9599060
title: TYPES OF HEADER, OPERATING SPEED, AND GEOMETRY OF COLLECTION FRAMES ON THE TOTAL LOSSES OF SOYBEAN HARVEST

description: ABSTRACT Soybean has significant economic importance in Brazil despite high production costs, making it necessary to increase the efficiency of mechanized harvest through the reduction of losses. Thus, this study aimed to evaluate the total losses in the mechanized soybean harvest as a function of the combination of header types, operating speeds, and geometry of collection frames. The study was carried out in a commercial farm in a randomized block design arranged in a 2 × 3 × 3 factorial with 10 replications, totaling 180 replications. The data were analyzed by descriptive statistics, analysis of variance, and quality control. The square frame can be used instead of the rectangular frame for the determination of the total losses. The increasing operating speed increased total losses in the auger header. On the other hand, the lowest losses at the highest operating speed were observed in the belt header. The harvester with belt header was more efficient when compared to that with auger header at the highest operating speed.
DOI: 10.6084/m9.figshare.9599069.v1
title: PEDOFUNCTIONS APPLIED TO THE LEAST LIMITING WATER RANGE TO ESTIMATE SOIL WATER CONTENT AT SPECIFIC POTENTIALS

description: ABSTRACT The least limiting water range (LLWR) is a soil physical quality indicator that receives much attention. It has been criticized and put to the test regarding mathematical models that compose it since they describe the behavior of soil physical attributes in a simplified way. This study aimed to assess the efficiency of some pedofunctions proposed in the literature and artificial neural networks on the accuracy in predicting soil water retention at potentials equivalent to field capacity (θFC) and permanent wilting point (θPWP). In other words, to apply the best models to LLWR of two soil types (Oxisol and Ultisol) and verify changes in their structure. The results indicated that pedofunctions using sand, silt, clay, bulk density, and soil organic matter contents are more efficient in estimating θFC and θPWP. However, the use of multiple linear regression models to predict θFC values below 0.20 m3 m−3 may present a slight tendency to overestimate it, which is not observed in the neural networks. As in R2, equations from neural networks were more efficient in estimating θFC and θPWP. Pedofunctions used to calculate LLWR differ in the establishment of the critical soil bulk density, exposing the limitations of the model.
DOI: 10.6084/m9.figshare.9599060.v1
title: TYPES OF HEADER, OPERATING SPEED, AND GEOMETRY OF COLLECTION FRAMES ON THE TOTAL LOSSES OF SOYBEAN HARVEST

description: ABSTRACT Soybean has significant economic importance in Brazil despite high production costs, making it necessary to increase the efficiency of mechanized harvest through the reduction of losses. Thus, this study aimed to evaluate the total losses in the mechanized soybean harvest as a function of the combination of header types, operating speeds, and geometry of collection frames. The study was carried out in a commercial farm in a randomized block design arranged in a 2 × 3 × 3 factorial with 10 replications, totaling 180 replications. The data were analyzed by descriptive statistics, analysis of variance, and quality control. The square frame can be used instead of the rectangular frame for the determination of the total losses. The increasing operating speed increased total losses in the auger header. On the other hand, the lowest losses at the highest operating speed were observed in the belt header. The harvester with belt header was more efficient when compared to that with auger header at the highest operating speed.