cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5862114
title: Agroclimatic zoning for urucum crops in the state of Minas Gerais, Brazil

description: ABSTRACT Hardier crops are needed in the arid regions of the Brazilian state of Minas Gerais, and annatto (Bixa orellana L.) is a good candidate. Producers, however, do not know if their areas are suitable for its cultivation and so are not investing in its implementation. Agroclimatic zoning would provide guidance to the producers. Identifying potential areas for the production of this crop would thus contribute to the agroclimatic zoning of B. orellana in Minas Gerais. We collected data for air temperature and precipitation from 852 meteorological stations in the state to classify regions as suitable, marginally suitable, or unsuitable for the crop. Suitable regions had an air temperature between 22 and 27 °C and precipitation between 800 and 1600 mm.y-1. Marginally suitable regions had an air temperature between 22 and 27 °C and precipitation less than 800 mm.y-1. Unsuitable regions had air temperature less than 22 °C or greater than 27 °C. A geographic information system was used for the spatial interpolation of air temperature and precipitation for all meteorological stations using kriging. The agroclimatic zoning of annatto crops for Minas Gerais was obtained by interpolating the two maps, air temperature and precipitation. Minas Gerais has great potential for urucum production, and agroclimatic zoning enabled the classification of regions by climatic suitability. The northern, western, northwestern, and part of the eastern regions of Minas Gerais have favourable climates suitable for the cultivation of B. orellana.
DOI: 10.6084/m9.figshare.5862114.v1
title: Agroclimatic zoning for urucum crops in the state of Minas Gerais, Brazil

description: ABSTRACT Hardier crops are needed in the arid regions of the Brazilian state of Minas Gerais, and annatto (Bixa orellana L.) is a good candidate. Producers, however, do not know if their areas are suitable for its cultivation and so are not investing in its implementation. Agroclimatic zoning would provide guidance to the producers. Identifying potential areas for the production of this crop would thus contribute to the agroclimatic zoning of B. orellana in Minas Gerais. We collected data for air temperature and precipitation from 852 meteorological stations in the state to classify regions as suitable, marginally suitable, or unsuitable for the crop. Suitable regions had an air temperature between 22 and 27 °C and precipitation between 800 and 1600 mm.y-1. Marginally suitable regions had an air temperature between 22 and 27 °C and precipitation less than 800 mm.y-1. Unsuitable regions had air temperature less than 22 °C or greater than 27 °C. A geographic information system was used for the spatial interpolation of air temperature and precipitation for all meteorological stations using kriging. The agroclimatic zoning of annatto crops for Minas Gerais was obtained by interpolating the two maps, air temperature and precipitation. Minas Gerais has great potential for urucum production, and agroclimatic zoning enabled the classification of regions by climatic suitability. The northern, western, northwestern, and part of the eastern regions of Minas Gerais have favourable climates suitable for the cultivation of B. orellana.
DOI: 10.6084/m9.figshare.5862111
title: ZnS Nanocrystals as an Additive for Gamma-Irradiated Poly (Vinyl Chloride)

description: Zinc sulfide (ZnS) was synthesized by sonochemical method and nanoparticles with crystallite size around 2 nm were obtained. PVC containing ZnS nanoparticles at concentrations of 0.10; 0.30; 0.50; 0.7 and 1.00 wt% were gamma irradiated (60Co) at room temperature in air. No appreciable decrease in PVC Viscosity-Average Molar Mass (Mv) was observed for samples containing 0.7 wt% of ZnS nanocrystals. It was demonstrated that the addition of ZnS nanocrystals imparted molecular protection to the polymer matrix while improving flexibility, by decreasing the Young Modulus of PVC films. These results suggest the use of sonochemically synthesized ZnS nanocrystals as a new additive for radiation-grade PVC materials.
DOI: 10.6084/m9.figshare.5862111.v1
title: ZnS Nanocrystals as an Additive for Gamma-Irradiated Poly (Vinyl Chloride)

description: Zinc sulfide (ZnS) was synthesized by sonochemical method and nanoparticles with crystallite size around 2 nm were obtained. PVC containing ZnS nanoparticles at concentrations of 0.10; 0.30; 0.50; 0.7 and 1.00 wt% were gamma irradiated (60Co) at room temperature in air. No appreciable decrease in PVC Viscosity-Average Molar Mass (Mv) was observed for samples containing 0.7 wt% of ZnS nanocrystals. It was demonstrated that the addition of ZnS nanocrystals imparted molecular protection to the polymer matrix while improving flexibility, by decreasing the Young Modulus of PVC films. These results suggest the use of sonochemically synthesized ZnS nanocrystals as a new additive for radiation-grade PVC materials.
DOI: 10.6084/m9.figshare.5862108
title: Rolling Contact Fatigue Life of Rail for Different Slip Conditions

description: Abstract A three-dimensional elastic-plastic finite element analysis (FEA) is carried out to estimate the rolling contact fatigue (RCF) crack initiation life for varied slip range on the rail arising from operational variations. The wheel load produces Hertzian contact pressure. Variation in engine traction induces slip variations that evolves thermal load in terms of heat flux. The aperiodic rolling of wheel on rail develops non-proportional multiaxial fatigue loading. Present study combines these effects by translating the wheel load on rail for multiple (twelve) pass in presence of thermal load, contact pressure and traction through a proposed simulation. The temperature dependent Chaboche material model with nonlinear kinematic hardening law is implemented to estimate the stresses and plastic strains governing the multiaxial fatigue condition at the interface. The location of maximum von Mises stress, found at a material point on or a layer below the rail-head, contemplates the fatigue crack initiation site. A coded search algorithm helps to identify the critical plane of crack initiation corresponding to the maximum fatigue parameter (FP). In contrast to available predictions of RCF life considering contact pressure and/or traction or frictional heat in isolation, present study combines all these loads together and provides a more realistic result by numerical simulation.
DOI: 10.6084/m9.figshare.5862108.v1
title: Rolling Contact Fatigue Life of Rail for Different Slip Conditions

description: Abstract A three-dimensional elastic-plastic finite element analysis (FEA) is carried out to estimate the rolling contact fatigue (RCF) crack initiation life for varied slip range on the rail arising from operational variations. The wheel load produces Hertzian contact pressure. Variation in engine traction induces slip variations that evolves thermal load in terms of heat flux. The aperiodic rolling of wheel on rail develops non-proportional multiaxial fatigue loading. Present study combines these effects by translating the wheel load on rail for multiple (twelve) pass in presence of thermal load, contact pressure and traction through a proposed simulation. The temperature dependent Chaboche material model with nonlinear kinematic hardening law is implemented to estimate the stresses and plastic strains governing the multiaxial fatigue condition at the interface. The location of maximum von Mises stress, found at a material point on or a layer below the rail-head, contemplates the fatigue crack initiation site. A coded search algorithm helps to identify the critical plane of crack initiation corresponding to the maximum fatigue parameter (FP). In contrast to available predictions of RCF life considering contact pressure and/or traction or frictional heat in isolation, present study combines all these loads together and provides a more realistic result by numerical simulation.
DOI: 10.6084/m9.figshare.5862105
title: Single and multiple presence statistics for bridge live load based on weigh-in-motion data

description: Abstract Modeling the traffic loads on bridges has been the subject of numerous studies. Defining a live load model to be used for bridge design is not an easy task. It demands among many other things a reliable dataset, a well-defined procedure for filtering data and also the determination of statistics for single and multiple presence occurrences. This study examines and characterizes the live load statistics for Brazilian concrete bridges. Single and multiple truck presence are evaluated for different bridge spans and truck daily volume. The sample is comprised of the thirteen months of data from a High Speed Weigh-In-Motion station (HS-WIM) in a resolution of one hundredth of a second currently operating on the Fernão Dias highway, also known as BR-381. The system provides eleven thousand records on a daily basis. After the filtering process three thousand trucks remain. The station takes measures in an same-direction two-lane highway, which allows the evaluation and characterization of both single and multiple presence statistics. Three case of multiple presence are considered: following, side-by-side and staggered cases. The consideration of truck multiple presence on concrete bridges is mandatory to understand and characterize live load models. The results show that with the exception of the side-by-side case, the frequency of multiple truck presence is significantly affected by span length. It also shows that the daily truck volume considerably affects the multiple presence statistics for all load patterns. The results show that the general tendency of the occurrence of all multiple presence events is to increase as the truck volume increases.
DOI: 10.6084/m9.figshare.5862105.v1
title: Single and multiple presence statistics for bridge live load based on weigh-in-motion data

description: Abstract Modeling the traffic loads on bridges has been the subject of numerous studies. Defining a live load model to be used for bridge design is not an easy task. It demands among many other things a reliable dataset, a well-defined procedure for filtering data and also the determination of statistics for single and multiple presence occurrences. This study examines and characterizes the live load statistics for Brazilian concrete bridges. Single and multiple truck presence are evaluated for different bridge spans and truck daily volume. The sample is comprised of the thirteen months of data from a High Speed Weigh-In-Motion station (HS-WIM) in a resolution of one hundredth of a second currently operating on the Fernão Dias highway, also known as BR-381. The system provides eleven thousand records on a daily basis. After the filtering process three thousand trucks remain. The station takes measures in an same-direction two-lane highway, which allows the evaluation and characterization of both single and multiple presence statistics. Three case of multiple presence are considered: following, side-by-side and staggered cases. The consideration of truck multiple presence on concrete bridges is mandatory to understand and characterize live load models. The results show that with the exception of the side-by-side case, the frequency of multiple truck presence is significantly affected by span length. It also shows that the daily truck volume considerably affects the multiple presence statistics for all load patterns. The results show that the general tendency of the occurrence of all multiple presence events is to increase as the truck volume increases.
DOI: 10.6084/m9.figshare.5862096
title: The image of violence and the violence of the image: War and ritual in Assyria (Ninth - seventh centuries BCE)

description: Abstract The idea of a predominantly bellicose and cruel Assyrian Empire (Ninth - Seventh centuries BCE) was based on certain visions inherited from the past (ranging from classical authors to the Hebrew Bible). From the nineteenth century onwards it developed following archaeological discoveries and the deciphering of cuneiform texts. Alongside official documents (inscriptions, annals, etc.), the images of the reliefs of Assyrian palaces played a central role in this construction. Considering this vision as the result of ideological and propagandistic manipulation of royal discourse and identifying an acritical approach of modern historiography is necessary, but not sufficient. This article seeks to offer an alternative appreciation. It proposes that it is necessary to conceive images of violence as active agents of the social phenomenon of sacred war, in a context of a process of expansion. The responses point in a dual direction: first to the relationship between visual violence and the specific type of Assyrian expansionism; in second place, to the ritual nature of visual artefacts.
DOI: 10.6084/m9.figshare.5862096.v1
title: The image of violence and the violence of the image: War and ritual in Assyria (Ninth - seventh centuries BCE)

description: Abstract The idea of a predominantly bellicose and cruel Assyrian Empire (Ninth - Seventh centuries BCE) was based on certain visions inherited from the past (ranging from classical authors to the Hebrew Bible). From the nineteenth century onwards it developed following archaeological discoveries and the deciphering of cuneiform texts. Alongside official documents (inscriptions, annals, etc.), the images of the reliefs of Assyrian palaces played a central role in this construction. Considering this vision as the result of ideological and propagandistic manipulation of royal discourse and identifying an acritical approach of modern historiography is necessary, but not sufficient. This article seeks to offer an alternative appreciation. It proposes that it is necessary to conceive images of violence as active agents of the social phenomenon of sacred war, in a context of a process of expansion. The responses point in a dual direction: first to the relationship between visual violence and the specific type of Assyrian expansionism; in second place, to the ritual nature of visual artefacts.
DOI: 10.6084/m9.figshare.5862087
title: INTERDISCIPLINARY AND INTERPROFESSIONALITY IN THE FAMILY HEALTH STRATEGY

description: Abstract Interdisciplinarity and its practical correlation, interprofessionality, are essential to the work in the Family Health Strategy. The objective was to characterize the interdisciplinary perspective of Family Health Strategy workers in a Brazilian capital, linking it to interprofessionality. Transversal, exploratory and descriptive study, developed from the qualitative and quantitative approaches. Data were collected from june to november 2014 through questionnaires and participant observation. The results of the questionnaire were converted into scores, allowing to classify the level of interdisciplinarity. The observation findings, recorded in the field diary, were submitted to content analysis and discussed in parallel with the quantitative findings. It was verified, in the questionnaires, that the dimension ‘reception’ was the only one that presented medium availability for practices that can make interdisciplinarity feasible. The results indicate that the health professionals’ perception about interdisciplinarity was positive, however, contradictions of these findings with the ones observed locus . In the participant observation, it was verified that the professionals need to follow some paths in the sense of materializing the interdisciplinarity in collaborative interprofessional practices. It is important to emphasize the need for management-level actions that favor these practices; Permanent education as a strategy for coping with integration difficulties; And the subjective investment of workers in the same direction.
DOI: 10.6084/m9.figshare.5862087.v1
title: INTERDISCIPLINARY AND INTERPROFESSIONALITY IN THE FAMILY HEALTH STRATEGY

description: Abstract Interdisciplinarity and its practical correlation, interprofessionality, are essential to the work in the Family Health Strategy. The objective was to characterize the interdisciplinary perspective of Family Health Strategy workers in a Brazilian capital, linking it to interprofessionality. Transversal, exploratory and descriptive study, developed from the qualitative and quantitative approaches. Data were collected from june to november 2014 through questionnaires and participant observation. The results of the questionnaire were converted into scores, allowing to classify the level of interdisciplinarity. The observation findings, recorded in the field diary, were submitted to content analysis and discussed in parallel with the quantitative findings. It was verified, in the questionnaires, that the dimension ‘reception’ was the only one that presented medium availability for practices that can make interdisciplinarity feasible. The results indicate that the health professionals’ perception about interdisciplinarity was positive, however, contradictions of these findings with the ones observed locus . In the participant observation, it was verified that the professionals need to follow some paths in the sense of materializing the interdisciplinarity in collaborative interprofessional practices. It is important to emphasize the need for management-level actions that favor these practices; Permanent education as a strategy for coping with integration difficulties; And the subjective investment of workers in the same direction.
DOI: 10.6084/m9.figshare.5862084
title: Microstructural evolution and mechanical properties of Sn-Bi-Cu ternary eutectic alloy produced by directional solidification

description: Sn-36Bi-22Cu (wt.%) ternary eutectic alloy was prepared using vacuum melting furnace and casting furnace. The samples were directionally solidified upwards solidification rate varying from 8.3 to 166 µm/s and at a constant temperature gradient (4.2 K/mm) in a Bridgman-type directional solidification furnace. The composition analysis of the phases and the intermetallics (Cu3Sn and Cu6Sn5) were determined from EDX and XRD analysis respectively. The variation of the lamellar spacing (Bi-rich phase) and the Cu3Sn phase spacing with the solidification rate were investigated. The dependence of microhardness, ultimate compressive strength and compressive yield strength on solidification rate were determined. The spacing and microhardness were measured from both longitudinal and transverse sections of the samples. The dependence of microhardness on the lamellar spacing and the Cu3Sn phase spacing were also determined. The relationships between phase spacings, solidification rate and mechanical properties were determined from linear regression analysis.
DOI: 10.6084/m9.figshare.5862084.v1
title: Microstructural evolution and mechanical properties of Sn-Bi-Cu ternary eutectic alloy produced by directional solidification

description: Sn-36Bi-22Cu (wt.%) ternary eutectic alloy was prepared using vacuum melting furnace and casting furnace. The samples were directionally solidified upwards solidification rate varying from 8.3 to 166 µm/s and at a constant temperature gradient (4.2 K/mm) in a Bridgman-type directional solidification furnace. The composition analysis of the phases and the intermetallics (Cu3Sn and Cu6Sn5) were determined from EDX and XRD analysis respectively. The variation of the lamellar spacing (Bi-rich phase) and the Cu3Sn phase spacing with the solidification rate were investigated. The dependence of microhardness, ultimate compressive strength and compressive yield strength on solidification rate were determined. The spacing and microhardness were measured from both longitudinal and transverse sections of the samples. The dependence of microhardness on the lamellar spacing and the Cu3Sn phase spacing were also determined. The relationships between phase spacings, solidification rate and mechanical properties were determined from linear regression analysis.
DOI: 10.6084/m9.figshare.5862075
title: Effect of NaOH concentration and curing regime on geopolymer

description: Abstract The effect of alkali concentration and curing temperature regime on fly ash-based geopolymer pastes was investigated in this study by using NaOH solutions. Prismatic specimens were molded, cured at 65 °C and 85 °C and submitted to flexural and compressive strength tests. Unreacted fly ash and geopolymers were characterized by X-ray diffraction and thermogravimetric analysis. In general, the mechanical strength was enhanced by increasing the molar concentration and the curing temperature. This trend was confirmed by thermogravimetric data. However, for a lower amount of NaOH there were no significant differences between the strength results. The mixture with the highest strength was obtained with the 16 M NaOH solution and curing temperature of 85 °C, which resulted in flexural strength of 4.20 MPa, compressive strength of 21.35 MPa and also the highest weight loss of 9.89%.
DOI: 10.6084/m9.figshare.5862075.v1
title: Effect of NaOH concentration and curing regime on geopolymer

description: Abstract The effect of alkali concentration and curing temperature regime on fly ash-based geopolymer pastes was investigated in this study by using NaOH solutions. Prismatic specimens were molded, cured at 65 °C and 85 °C and submitted to flexural and compressive strength tests. Unreacted fly ash and geopolymers were characterized by X-ray diffraction and thermogravimetric analysis. In general, the mechanical strength was enhanced by increasing the molar concentration and the curing temperature. This trend was confirmed by thermogravimetric data. However, for a lower amount of NaOH there were no significant differences between the strength results. The mixture with the highest strength was obtained with the 16 M NaOH solution and curing temperature of 85 °C, which resulted in flexural strength of 4.20 MPa, compressive strength of 21.35 MPa and also the highest weight loss of 9.89%.
DOI: 10.6084/m9.figshare.5862048
title: Mode I Interlaminar Fracture Toughness Analysis of Co-Bonded and Secondary Bonded Carbon Fiber Reinforced Composites Joints

description: Aiming to reduce aircraft weight, aeronautic industry seeks alternative materials and processes used to join its different structural parts. An option to traditional methods are high performance adhesive joints, which reduce weight, number of parts and component final cost, also resulting in higher strength structures. Although, the lack of experimental data to provide a detailed structural characterization of these joining techniques had limited their commercial application. The proposal of this work is to investigate the Mode I interlaminar fracture toughness under quasi-static loading using DCB specimens of carbon composite joints made by co-bonding and secondary bonding techniques, the latter giving more reliable results. For a better understanding on the failure in the systems, DSC and microscopy techniques were applied, from which three stages of delamination process during testing were observed: 1st Stage) Cohesive failure represented by an unstable crack propagation from a high energy level; 2nd Stage) transition from cohesive to adhesive and final intralaminar failure mode with lower energy levels than Stage 1; and 3rd Stage) completely stable propagation at low energy levels (delamination migrates from intralaminar to interlaminar, entirely in the substrate).