cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5861235
title: Municipal solid waste management in the municipalities of the Alto Tietê Basin: an analysis of the use of ICT in the access to government information

description: Abstract The research aimed to analyze how information and communication technologies (ICT) and the internet in particular have been applied to support municipal solid waste management (MSW) at the local level. We analyzed the websites of the 34 municipalities that compose the Alto Tietê Basin seeking for information about selective collection programs, use of voluntary delivery points, and the access to the Integrated Solid Waste Management Plan. The results reveal a limited use of ICT in most municipalities and its misapplication for disseminating important information to the population about adequate procedures of separation and storage of waste for selective collection. This may hinder the effectiveness of this public service and increase the health risks for collectors that work with the recycling of these materials. We conclude that a better use of ICT for an adequate monitoring and dissemination of information about municipal solid waste would be an effective mechanism to enforce the goals and targets determined by the National Solid Waste Policy at the local level, and to enhance the practices of accountability and provision of information to citizens.
DOI: 10.6084/m9.figshare.7512446.v1
title: Influence of the instrument used for cervical preflaring on the precision of 2 Eletronic Apex Locators

description: ABSTRACT Objective: This study was aimed at evaluating the influence of cervical preflaring using LA-Axxes No. 1 bur (SybronEndo, Glendora, USA) or S1 and SX ProTaper files (Dentsply Maillefer, Ballaigues, Switzerland) on the accuracy of the Electronic Apex Locators (EALs): Root ZX mini (J. Morita Corporation, Tokyo, Japan), and Joypex 5 (Denjoy, Changsha, China). Methods: Thirty mandibular incisors were accessed, and the root canal length (RCL) was determined with a K-file #15, with the aid of a stereo microscope. Afterwards, the specimens were divided into 2 groups (n = 15) referring to the cervical preflaring with LA-Axxess or ProTaper files. The teeth were embedded in alginate and the RCL was determined by the EALs before and after preflaring. Data were classified into: accurate, if the difference in RCL measurement were ≤0.05 mm; and inaccurate, if the difference were &gt;0.5 mm or beyond the RCL. Results: McNemar's test (α&lt;0.05) was used to detect differences in the accuracy of the EALs before and after each preflaring with different instruments, and to detect difference in accuracy among devices. No differences were found concerning the accuracy of the EALs (P &gt; 0.05) after the cervical preflaring, regardless of the used instrument. Conclusion: The preflaring procedure increased the number of accurate measurements for both EALs, with statistical difference for Joypex 5 when the preflaring was performed with LA-Axxess. However, after the cervical preflaring, the EALs showed similar accuracy, regardless of the used instrument.
DOI: 10.6084/m9.figshare.7515185.v1
title: Water erosion vulnerability and sediment delivery rate in upper Iguaçu river basin – Paraná

description: ABSTRACT Soil erosion is one of the most striking environmental degradation processes, which its mapping and assessment is an important tool for management activities and natural resource management in river basins, allowing managers to implement policies and sustainable land use occupation. This work aimed to apply the Revised Universal Soil Loss Equation (RUSLE) in a GIS environment in the upper Iguaçu river basin, located at Paraná State, in order to assess the vulnerability to water erosion as well as the concentration of dissolved solids in suspension to estimate the solid discharge and sediment delivery rate, allowing the identification of more susceptible areas to water erosion. The results showed that over 23.52% of the upper Iguaçu river basin presented soil losses below 2.5 t ha–1 yr–1, meaning current low potential for erosion. Regarding the solid discharge, the basin has values ranging from low to very high, also leading to high values for sediment delivery rate. The identification of risk areas associated with accelerated erosion, carried out in this study provide important information for measures associated with the management, conservation and planning of land use in the basin, which is highly relevant for predicting development of various scenarios for the state Paraná for its hydroelectric potential.
DOI: 10.6084/m9.figshare.7517999
title: Giant Bamboo (Dendrocalamus giganteus Munro) Anatomical and Physical Characterization

description: The work aimed to carry out the anatomical and physical characterizations of adult bamboo rods of Dendrocalamus giganteus Munro. So, four rods were collected and sectioned in culms of 2.10 m long. From the ends of the culms were obtained 5.0 cm thick disks that were transformed into samples for anatomical and physical characterizations. In this study, were measured the percentage of fibers, vessels, parenchyma, the moisture content, the basic specific gravity and oven dry specific gravity and shrinkage. The studied bamboo has 0 to 4 vessels mm–2, with average of 2 vessels mm–2, with average fiber length of 2.72 mm and 50.72% consists of parenchyma tissue. The moisture content was quantified at 60%, the basic specific gravity in 0.66 g cm–3, the oven dry specific gravity in 0.83 g cm–3 and volumetric shrinkage in 15.40%. It was observed that the bamboo physical characteristics were influenced by the layout and anatomical elements proportion.
DOI: 10.6084/m9.figshare.7519544.v1
title: Myrtaceae in the Caveiras River Basin: Ecological Characteristics and Non-timber Uses

description: ABSTRACT This study aimed to describe the floristic-structural pattern, ecological characteristics and potentials of Myrtaceae in the Caveiras River Basin. The studied Myrtaceae communities are localized in Santa Catarina Southern Plateau – municipalities of Lages, São José do Cerrito and Urupema. Four sampling units were installed in each municipality, totaling a sampling area of 30,000 m2. All Myrtaceae individuals with DBH ≥ 5 cm were surveyed within the sampling units. The Myrtaceae community structure was assessed through phytosociological descriptors and the sampling sufficiency was verified using the rarefaction method. The ecological approach, as well as the indication of non-timber use of Myrtaceae resources was inferred from a specialized bibliography and scientific database. 1,480 Myrtaceae individuals were sampled, totaling 21 species and 11 genera. The most abundant species were Myrceugenia euosma, Siphoneugena reitzii and Myrcia palustris, which represent more than 50% of the community structure. Regarding the ecological classification, the late secondary group was the most expressive (57%). The sampled species are recommended for the restoration of altered areas, ornamental (100%) as well as phytotherapic use (60%). Despite the Myrtaceae representativeness and potentials, further research is necessary to support conservation through management plans.
DOI: 10.6084/m9.figshare.7515185
title: Water erosion vulnerability and sediment delivery rate in upper Iguaçu river basin – Paraná

description: ABSTRACT Soil erosion is one of the most striking environmental degradation processes, which its mapping and assessment is an important tool for management activities and natural resource management in river basins, allowing managers to implement policies and sustainable land use occupation. This work aimed to apply the Revised Universal Soil Loss Equation (RUSLE) in a GIS environment in the upper Iguaçu river basin, located at Paraná State, in order to assess the vulnerability to water erosion as well as the concentration of dissolved solids in suspension to estimate the solid discharge and sediment delivery rate, allowing the identification of more susceptible areas to water erosion. The results showed that over 23.52% of the upper Iguaçu river basin presented soil losses below 2.5 t ha–1 yr–1, meaning current low potential for erosion. Regarding the solid discharge, the basin has values ranging from low to very high, also leading to high values for sediment delivery rate. The identification of risk areas associated with accelerated erosion, carried out in this study provide important information for measures associated with the management, conservation and planning of land use in the basin, which is highly relevant for predicting development of various scenarios for the state Paraná for its hydroelectric potential.
DOI: 10.6084/m9.figshare.7517999.v1
title: Giant Bamboo (Dendrocalamus giganteus Munro) Anatomical and Physical Characterization

description: The work aimed to carry out the anatomical and physical characterizations of adult bamboo rods of Dendrocalamus giganteus Munro. So, four rods were collected and sectioned in culms of 2.10 m long. From the ends of the culms were obtained 5.0 cm thick disks that were transformed into samples for anatomical and physical characterizations. In this study, were measured the percentage of fibers, vessels, parenchyma, the moisture content, the basic specific gravity and oven dry specific gravity and shrinkage. The studied bamboo has 0 to 4 vessels mm–2, with average of 2 vessels mm–2, with average fiber length of 2.72 mm and 50.72% consists of parenchyma tissue. The moisture content was quantified at 60%, the basic specific gravity in 0.66 g cm–3, the oven dry specific gravity in 0.83 g cm–3 and volumetric shrinkage in 15.40%. It was observed that the bamboo physical characteristics were influenced by the layout and anatomical elements proportion.
DOI: 10.6084/m9.figshare.7512455
title: In vitro evaluation of gingival fibroblasts proliferation and smear layer formation in pre-conditioned root surfaces

description: ABSTRACT Objective: The objective of the present study was to evaluate, in vitro, fibroblastic proliferation on chemically conditioned root surfaces. Methods: Forty single-rooted human teeth, were cut into fragments and divided into four groups (n=20): GI (control) - scaling and root planing (SRP); GII - SRP + conditioning with 10% citric acid; GIII - SRP + conditioning with 24% EDTA gel and GIV - SRP + conditioning with 50 mg/ml of tetracycline hydrochloride. The fibroblasts were placed on these surfaces and cell proliferation evaluated using Trypan Blue stain. Smayer layer formation was analyzed using Scanning Electron Microscopy. Results: The results revealed that the chemical conditioners used were incapable of effectively removing the smear layer. However, when compared to the other groups, GIII showed the best results regarding removal of the smear layer (p&lt;0.05). GI demonstrated the greatest cell proliferation at all studied time intervals compared to the chemically treated groups (p&lt;0.05). Conclusion: The results of the present study reveal that all demineralizing agents evaluated presented lower cell proliferation levels when compared to the control group. In addition none of the chemical conditioners used removed the smear layer completely.
DOI: 10.6084/m9.figshare.5670814
title: Application of a Greedy Algorithm to Military Aircraft Fleet Retirements

description: ABSTRACT This article presents a retirement analysis model for aircraft fleets. By employing a greedy algorithm, the presented solution is capable of identifying individually weak assets in a fleet of aircraft with inhomogeneous historical utilization. The model forecasts future retirement scenarios employing user-defined decision periods, informed by a cost function, a utility function and demographic inputs to the model. The model satisfies first-order necessary conditions and uses cost minimization, utility maximization or a combination of the 2 as the objective function. This study creates a methodology for applying a greedy algorithm to a military fleet retirement scenario and then uses the United States Air Force A-10 Thunderbolt II fleet for model validation. It is shown that this methodology provides fleet managers with valid retirement options and shows that early retirement decisions substantially impact future fleet cost and utility.
DOI: 10.6084/m9.figshare.7508045.v1
title: Environmental risk assessment in the killing floor of a bovine abattoir

description: ABSTRACT This study is non-experimental, qualitative descriptive, and aimed to identify the environmental conditions and work process that may increase the risk of accidents and represent damage to the worker's health. It was based on the analysis of the work processes and environmental aspects on the killing floor of a cattle slaughterhouse. We used an observation script, based upon laws and Biosafety. The results show humidity, loud noises, temperature alternation and working speed determined by the number of animals slaughtered; which generates physical and psychological problems, especially repetitive strain injuries, depression, stress, and contamination by biological agents.
DOI: 10.6084/m9.figshare.5696017.v1
title: Use of rooftop rainwater of buildings: reservoir volume estimation by methods described in the NBR 15527

description: Abstract This paper explores the possibility of harvesting rainwater in a Testing Tank used to test scale models of boats and ships in Jahu College of Technology, São Paulo State. We considered local rainfall data, the coverage area for catchment and the demand for water. Water demand was estimated for cleaning, filtering and evaporation processes in the Testing Tank. The dimensions of the reservoir were calculated according to the methodologies described in the NBR 15527, which prescribes the requirements for the use of roofs in urban areas for the catchment of rainwater for non-potable purposes. The volume of the reservoir selected enabled the best use of rainwater and resulted in a better reduction of water demand on the public supply system. It was chosen as the best alternative after comparative analysis considering the local restrictions and the risk of non-compliance.
DOI: 10.6084/m9.figshare.7508045
title: Environmental risk assessment in the killing floor of a bovine abattoir

description: ABSTRACT This study is non-experimental, qualitative descriptive, and aimed to identify the environmental conditions and work process that may increase the risk of accidents and represent damage to the worker's health. It was based on the analysis of the work processes and environmental aspects on the killing floor of a cattle slaughterhouse. We used an observation script, based upon laws and Biosafety. The results show humidity, loud noises, temperature alternation and working speed determined by the number of animals slaughtered; which generates physical and psychological problems, especially repetitive strain injuries, depression, stress, and contamination by biological agents.
DOI: 10.6084/m9.figshare.7512455.v1
title: In vitro evaluation of gingival fibroblasts proliferation and smear layer formation in pre-conditioned root surfaces

description: ABSTRACT Objective: The objective of the present study was to evaluate, in vitro, fibroblastic proliferation on chemically conditioned root surfaces. Methods: Forty single-rooted human teeth, were cut into fragments and divided into four groups (n=20): GI (control) - scaling and root planing (SRP); GII - SRP + conditioning with 10% citric acid; GIII - SRP + conditioning with 24% EDTA gel and GIV - SRP + conditioning with 50 mg/ml of tetracycline hydrochloride. The fibroblasts were placed on these surfaces and cell proliferation evaluated using Trypan Blue stain. Smayer layer formation was analyzed using Scanning Electron Microscopy. Results: The results revealed that the chemical conditioners used were incapable of effectively removing the smear layer. However, when compared to the other groups, GIII showed the best results regarding removal of the smear layer (p&lt;0.05). GI demonstrated the greatest cell proliferation at all studied time intervals compared to the chemically treated groups (p&lt;0.05). Conclusion: The results of the present study reveal that all demineralizing agents evaluated presented lower cell proliferation levels when compared to the control group. In addition none of the chemical conditioners used removed the smear layer completely.
DOI: 10.6084/m9.figshare.5670814.v1
title: Application of a Greedy Algorithm to Military Aircraft Fleet Retirements

description: ABSTRACT This article presents a retirement analysis model for aircraft fleets. By employing a greedy algorithm, the presented solution is capable of identifying individually weak assets in a fleet of aircraft with inhomogeneous historical utilization. The model forecasts future retirement scenarios employing user-defined decision periods, informed by a cost function, a utility function and demographic inputs to the model. The model satisfies first-order necessary conditions and uses cost minimization, utility maximization or a combination of the 2 as the objective function. This study creates a methodology for applying a greedy algorithm to a military fleet retirement scenario and then uses the United States Air Force A-10 Thunderbolt II fleet for model validation. It is shown that this methodology provides fleet managers with valid retirement options and shows that early retirement decisions substantially impact future fleet cost and utility.
DOI: 10.6084/m9.figshare.5696017
title: Use of rooftop rainwater of buildings: reservoir volume estimation by methods described in the NBR 15527

description: Abstract This paper explores the possibility of harvesting rainwater in a Testing Tank used to test scale models of boats and ships in Jahu College of Technology, São Paulo State. We considered local rainfall data, the coverage area for catchment and the demand for water. Water demand was estimated for cleaning, filtering and evaporation processes in the Testing Tank. The dimensions of the reservoir were calculated according to the methodologies described in the NBR 15527, which prescribes the requirements for the use of roofs in urban areas for the catchment of rainwater for non-potable purposes. The volume of the reservoir selected enabled the best use of rainwater and resulted in a better reduction of water demand on the public supply system. It was chosen as the best alternative after comparative analysis considering the local restrictions and the risk of non-compliance.
DOI: 10.6084/m9.figshare.7508207
title: VIGOR TESTS ASSOCIATION AS AN ALTERNATIVE FOR PRECISE AND EFFICIENT ASSESSMENT OF MAIZE SEED QUALITY

description: ABSTRACT: This study aimed to associate two concepts of seed vigor testing, the aging and seedling growth using image analysis, providing a feasible and time-saving way to evaluate maize seed vigor in large scale. For this purpose, five seed lots with different vigor levels from two single hybrids were used. The seeds were characterized by moisture content, germination, seedling emergence, seedling emergence speed index, accelerated aging and cold tests. The treatments were composed by varying the accelerated aging periods (0, 24, 48, 72 and 96h) and seedling growth periods (48 and 72h), before submitting the seedlings to image analysis for seedling root length measurement. Considering the results obtained, the adaptation of accelerated aging test by reducing the aging duration from 96h to 48h, and the replacement of the germination test by seedling root length measurement using image analysis could be considered a potential tool for maize seed vigor assessment. The treatments composed of 48h of seed aging followed by seedlings root length measurements using image analysis provided reliable data, compared to traditional vigor tests and it could be considered an efficient and time-saving approach, associating two different concepts of seed vigor analysis.
DOI: 10.6084/m9.figshare.7508228
title: Sugarcane production fertilized with poultry litter

description: SUMMARY The aim of this work was to evaluate the development and quality of sugarcane variety RB 867515 and chemical attributes of the soil in response to the application of increasing level of fertilization. It was used randomized blocks design, with five treatments (0, 3, 6, 9 and 12 t/ha of poultry litter) and four replications. At four months after planting there were no differences among poultry liter levels on plant height, culm diameter, and leaves width and length, but the number of plants/m linear and number of leaves/plant reached maximum values using 8.7 and 5.3 t/ha of poultry litter, respectively. At 12 months after planting, there was increase in P, K, Ca and Mg by increasing the level of fertilization with poultry litter and linear increase in productivity of sugarcane green mass. Therefore, up to 12 t/ha of poultry litter can be applied to maximize the performance of sugarcane and improve soil fertility. In addition to the reached productivity, the accumulation of soluble sugar (mean 20 degrees Brix), as well as contents of dry matter (32.9%) and neutral detergent fiber (46.7%) indicates that the sugarcane variety RB 867515, of mean/late cycle, presents appropriate for the first cut for animal feeding at 12 months after planting.
DOI: 10.6084/m9.figshare.7508228.v1
title: Sugarcane production fertilized with poultry litter

description: SUMMARY The aim of this work was to evaluate the development and quality of sugarcane variety RB 867515 and chemical attributes of the soil in response to the application of increasing level of fertilization. It was used randomized blocks design, with five treatments (0, 3, 6, 9 and 12 t/ha of poultry litter) and four replications. At four months after planting there were no differences among poultry liter levels on plant height, culm diameter, and leaves width and length, but the number of plants/m linear and number of leaves/plant reached maximum values using 8.7 and 5.3 t/ha of poultry litter, respectively. At 12 months after planting, there was increase in P, K, Ca and Mg by increasing the level of fertilization with poultry litter and linear increase in productivity of sugarcane green mass. Therefore, up to 12 t/ha of poultry litter can be applied to maximize the performance of sugarcane and improve soil fertility. In addition to the reached productivity, the accumulation of soluble sugar (mean 20 degrees Brix), as well as contents of dry matter (32.9%) and neutral detergent fiber (46.7%) indicates that the sugarcane variety RB 867515, of mean/late cycle, presents appropriate for the first cut for animal feeding at 12 months after planting.
DOI: 10.6084/m9.figshare.7515692.v1
title: Physiological response of cotton seeds treated with thiamethoxam under heat stress

description: Abstract: This study aimed to verify the effect of seeds treated with thiamethoxam on the emergence, growth and chlorophyll content of seedlings of two cotton cultivars subjected to abiotic stress. The seeds used were from the DeltaOpal and NuOpal cultivars, each one represented by three lots, previously subjected to determination of moisture content, germination and vigor (low temperature germination). Then, the seeds from each lot, treated with thiamethoxam at a dose of 600 mL of product per 100 kg-1 seed or not, were exposed to temperature (18, 25 and 35 °C) and water availability (40, 60 and 80%) stress conditions. The emergence percentage, the root and shoot length, and the chlorophyll content were evaluated. The growth of cotton seedlings from the DeltaOpal and NuOpal cultivars, subjected to low temperature conditions and water availability of 40 to 60%, is favored by seed treatment with thiamethoxam. Seed treatment with thiamethoxam increases chlorophyll content during the development of cotton plants.