cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6802493
title: Changes on the silicosis profile in underground gold mining in Minas Gerais, Brazil

description: Abstract Introduction: Minas Gerais is the Brazilian state with the highest record of silicosis cases, mostly from gold mining. Objectives: to describe and analyze the occurrence of silicosis in gold mining over time, identifying occupational related factors. Methods: cross-sectional study with 1.020 former miners from the region of Nova Lima, Minas Gerais, evaluated from 1995 to 2011. Results: silicosis diagnosis was confirmed in 19.7% of the miners evaluated. No cases were identified in individuals who worked only on the surface. The prevalence among those who worked underground was 3.8% for the group up to 5 years and 44,2% for the group that worked over 20 years. Those admitted to work underground up to 1950 had a prevalence of 57.9%. Among those admitted after 1990, there were no cases recorded. Conclusion: we found an expressive decline in the silicosis occurrence in the period. Because silicosis is dose-dependent, it is expected that decrease in exposure levels was due to improvements in work environments. These measures must continue to be adopted in mining and in other branches of work activity to reduce the occurrence of silicosis.
DOI: 10.6084/m9.figshare.6802496.v1
title: The implementation of work environment surveillance by the Brazilian Unified Health System (SUS): the experience of the State Reference Center for Worker’s Health (Cesat) in Bahia

description: Abstract Objective: to describe and characterize the actions and results of the work environments’ surveillance actions developed by the Centro Estadual de Referência em Saúde do Trabalhador - Cesat (State Reference Center for Worker’s Health). Methods: descriptive study using technical documents generated by the surveillance inspections developed in work environments by the Cesat in the state of Bahia, Brazil, from 2004 to 2013. Results: we analyzed 283 surveillance reports carried out in 211 companies from 25 branches of economic activities, most of them private chemical and petrochemical industries. The Public Prosecutor’s Office demanded the majority of the actions. The main reasons for the inspections were mapping risks and verifying compliance with control recommendations. We identified a processual character of the actions, that is, they are continuous and systematic, as well as intersectoral and interdisciplinary approaches, besides workers’ participation. The inspections effectiveness was evidenced by the total ou partial compliance with the recommendations. Conclusions: Cesat has been well playing its role of structuring workers’ health surveillance actions in the state of Bahia. Our findings indicate that its performance can contribute to the evaluation and consolidation of SUS’ (Brazilian Unified Health System) work environment surveillance.
DOI: 10.6084/m9.figshare.6802490
title: An integrative review of associations between polymorphic variants and the metabolic syndrome

description: Abstract The pathogenesis of metabolic syndrome, i.e. of each of its components, is complex and has not been entirely elucidated. As a result, it is very difficult to establish a definition of which clinical factors are the most important determinants of its development. The objective of this review is to describe Brazilian scientific research investigating associations between the metabolic syndrome and genetic factors. We selected fifteen studies that met the inclusion and exclusion criteria. Our analysis revealed that there is a modest volume of Brazilian studies investigating relationships between genes, their polymorphic variants and the metabolic syndrome and its risk factors. Therefore, more studies are needed to better understand the biological roles played by genetic polymorphisms and their relationships with metabolic syndrome or its risk factors.
DOI: 10.6084/m9.figshare.6802493.v1
title: Changes on the silicosis profile in underground gold mining in Minas Gerais, Brazil

description: Abstract Introduction: Minas Gerais is the Brazilian state with the highest record of silicosis cases, mostly from gold mining. Objectives: to describe and analyze the occurrence of silicosis in gold mining over time, identifying occupational related factors. Methods: cross-sectional study with 1.020 former miners from the region of Nova Lima, Minas Gerais, evaluated from 1995 to 2011. Results: silicosis diagnosis was confirmed in 19.7% of the miners evaluated. No cases were identified in individuals who worked only on the surface. The prevalence among those who worked underground was 3.8% for the group up to 5 years and 44,2% for the group that worked over 20 years. Those admitted to work underground up to 1950 had a prevalence of 57.9%. Among those admitted after 1990, there were no cases recorded. Conclusion: we found an expressive decline in the silicosis occurrence in the period. Because silicosis is dose-dependent, it is expected that decrease in exposure levels was due to improvements in work environments. These measures must continue to be adopted in mining and in other branches of work activity to reduce the occurrence of silicosis.
DOI: 10.6084/m9.figshare.6802490.v1
title: An integrative review of associations between polymorphic variants and the metabolic syndrome

description: Abstract The pathogenesis of metabolic syndrome, i.e. of each of its components, is complex and has not been entirely elucidated. As a result, it is very difficult to establish a definition of which clinical factors are the most important determinants of its development. The objective of this review is to describe Brazilian scientific research investigating associations between the metabolic syndrome and genetic factors. We selected fifteen studies that met the inclusion and exclusion criteria. Our analysis revealed that there is a modest volume of Brazilian studies investigating relationships between genes, their polymorphic variants and the metabolic syndrome and its risk factors. Therefore, more studies are needed to better understand the biological roles played by genetic polymorphisms and their relationships with metabolic syndrome or its risk factors.
DOI: 10.6084/m9.figshare.6802484
title: Partial sternotomy for management of iatrogenic brachiocephalic trunk injury during tracheotomy

description: Abstract The median thoracotomy is an access incision made longitudinally through the sternum and variants can be subdivided into total vertical and partial upper or partial lower vertical incisions. In surgical practice, using a partial median sternotomy is an alternative option that causes less surgical aggression. The brachiocephalic artery is one of the thoracic vessels most often affected in traumas and it can be accessed via a median sternotomy. This report describes use of an upper partial sternotomy to provide access in a case of traumatic iatrogenic injury of the brachiocephalic trunk.
DOI: 10.6084/m9.figshare.6802487
title: Comparative analysis of the retraction through the drying shrinkage of new and recycled polyester fibers

description: Abstract Analyzing the physical characteristics of the cementitious matrices, it is possible to highlight the shrinkage as one of the most influential in the durability. If not predicted or controlled, this has the potential to cause serious problems in systems, such as cracking. Due to the shrinkage effect of the matrix it is inevitable to encounter cracks in the early ages of the concrete due to the phenomenon of their volumetric variation. It is known that the addition of fibers affects the properties of the resulting composite, reducing its cracking potential. In this sense, this research evaluates the effects caused by the insertion of new and used polyester fibers in the drying retraction of concretes. The results of the compressive strength did not change with the addition of the polyester fibers in the reference concrete. By means of the restricted ring test it was possible to observe efficiency gains in the blends with the use of fibers, when it refers to the retraction by means of the reference matrix. The shrinkage stresses on drying were increased about twice with the inclusion of the fibrous reinforcements. It could be observed that the addition of recycled polyester fibers provided a reduction, about 80%, in the formation of cracks in the matrix when compared to the reinforcing effects in concrete with addition of the virgin fibers.
DOI: 10.6084/m9.figshare.6802487.v1
title: Comparative analysis of the retraction through the drying shrinkage of new and recycled polyester fibers

description: Abstract Analyzing the physical characteristics of the cementitious matrices, it is possible to highlight the shrinkage as one of the most influential in the durability. If not predicted or controlled, this has the potential to cause serious problems in systems, such as cracking. Due to the shrinkage effect of the matrix it is inevitable to encounter cracks in the early ages of the concrete due to the phenomenon of their volumetric variation. It is known that the addition of fibers affects the properties of the resulting composite, reducing its cracking potential. In this sense, this research evaluates the effects caused by the insertion of new and used polyester fibers in the drying retraction of concretes. The results of the compressive strength did not change with the addition of the polyester fibers in the reference concrete. By means of the restricted ring test it was possible to observe efficiency gains in the blends with the use of fibers, when it refers to the retraction by means of the reference matrix. The shrinkage stresses on drying were increased about twice with the inclusion of the fibrous reinforcements. It could be observed that the addition of recycled polyester fibers provided a reduction, about 80%, in the formation of cracks in the matrix when compared to the reinforcing effects in concrete with addition of the virgin fibers.
DOI: 10.6084/m9.figshare.6802481
title: Energetic behavior of representative urban mosaics (La Plata-Buenos Aires-Argentina): the influence of intra-urban thermal variations

description: Abstract Simplified HVAC models for buildings estimate energy demand based on a global loss coefficient (G) and the heating and cooling degree days (DD). The DD are calculated, from citie's average temperatures, published by official entities. However different researches have recorded that the city affects the urban climate with thermal variations due to its morphological and material conditions. This paper analyzes the external thermal situations in different representative areas of La Plata city to determine the degree to which the theoretical energy is demanded for thermal conditioning at the intra-urban level are modified. To address the research, the external temperatures of ten urban sectors were measured. Then, the DD were calculated and compared with the official records, different zones were grouped by the k-means technique and, finally, theoretical energy demand was calculated. Results show that energy demand calculated from experimental measurements is overestimated in winter and underestimated in summer regarding the calculation from official measurements. Also, different territorial thermal distributions were found between winter and summer.
DOI: 10.6084/m9.figshare.6802484.v1
title: Partial sternotomy for management of iatrogenic brachiocephalic trunk injury during tracheotomy

description: Abstract The median thoracotomy is an access incision made longitudinally through the sternum and variants can be subdivided into total vertical and partial upper or partial lower vertical incisions. In surgical practice, using a partial median sternotomy is an alternative option that causes less surgical aggression. The brachiocephalic artery is one of the thoracic vessels most often affected in traumas and it can be accessed via a median sternotomy. This report describes use of an upper partial sternotomy to provide access in a case of traumatic iatrogenic injury of the brachiocephalic trunk.
DOI: 10.6084/m9.figshare.6802478
title: Fatty Acid Profile and Milk Cholesterol of Crossbred Holstein × Zebu Cows Fed on Whole Cottonseed

description: The objective of this study was to evaluate the effect of whole cottonseed on diets of cows under grazing on fatty acid profile and milk cholesterol. Five crossbred Holstein × Zebu cows were distributed in a 5 × 5 Latin square. Inclusion levels were 0, 6, 12, 18 and 24%. There was a linear decrease in all fatty acids quantified, saturated and monounsaturated (p &gt; 0.05), possibly due to the action of polyunsaturated fatty acids ingested in the diet. There was no influence of treatment on conjugated linoleic acids or cholesterol. It is concluded that, regardless of inclusion level, there is a modification in the milk lipid profile, reducing the concentration of saturated fatty acid, monounsaturated fatty acid, and making it rich in polyunsaturated fatty acids, which are beneficial to health.
DOI: 10.6084/m9.figshare.6802481.v1
title: Energetic behavior of representative urban mosaics (La Plata-Buenos Aires-Argentina): the influence of intra-urban thermal variations

description: Abstract Simplified HVAC models for buildings estimate energy demand based on a global loss coefficient (G) and the heating and cooling degree days (DD). The DD are calculated, from citie's average temperatures, published by official entities. However different researches have recorded that the city affects the urban climate with thermal variations due to its morphological and material conditions. This paper analyzes the external thermal situations in different representative areas of La Plata city to determine the degree to which the theoretical energy is demanded for thermal conditioning at the intra-urban level are modified. To address the research, the external temperatures of ten urban sectors were measured. Then, the DD were calculated and compared with the official records, different zones were grouped by the k-means technique and, finally, theoretical energy demand was calculated. Results show that energy demand calculated from experimental measurements is overestimated in winter and underestimated in summer regarding the calculation from official measurements. Also, different territorial thermal distributions were found between winter and summer.
DOI: 10.6084/m9.figshare.6802478.v1
title: Fatty Acid Profile and Milk Cholesterol of Crossbred Holstein × Zebu Cows Fed on Whole Cottonseed

description: The objective of this study was to evaluate the effect of whole cottonseed on diets of cows under grazing on fatty acid profile and milk cholesterol. Five crossbred Holstein × Zebu cows were distributed in a 5 × 5 Latin square. Inclusion levels were 0, 6, 12, 18 and 24%. There was a linear decrease in all fatty acids quantified, saturated and monounsaturated (p &gt; 0.05), possibly due to the action of polyunsaturated fatty acids ingested in the diet. There was no influence of treatment on conjugated linoleic acids or cholesterol. It is concluded that, regardless of inclusion level, there is a modification in the milk lipid profile, reducing the concentration of saturated fatty acid, monounsaturated fatty acid, and making it rich in polyunsaturated fatty acids, which are beneficial to health.
DOI: 10.6084/m9.figshare.6802475
title: Epidemiological aspects of human and canine visceral leishmaniasis in State of Alagoas, Northeast, Brazil

description: Abstract Zoonotic visceral leishmaniasis (ZVL), caused by protozoans of the genus Leishmania, it is a worldwide of great importance disease. In the northeast region of Brazil, the state of Alagoas has an endemic status for ZVL. Thus, this work aimed to analyze the epidemiological situation of human and canine visceral leishmaniasis in Alagoas, Northeast, Brazil, from 2007 to 2013. We conducted a descriptive, observational, retrospective study using secondary data from the Notifiable Diseases Information System, the Center of Zoonosis Control of Maceió, and the Central Laboratory of Public Health of Alagoas. During the studied period, it was observed that the highest incidence of human visceral leishmaniasis was in 2011 and the lowest in 2013. On the other hand, canine visceral leishmaniasis had its highest incidence in 2007 and its lowest in 2012. Of the 55 municipalities in the State of Alagoas that showed human visceral leishmaniasis (HVL), São José da Tapera presented an average of 4.4 cases over the past five years, being classified as of intense transmission. Regarding canine visceral leishmaniasis, in the same studied period, 45,112 dogs were examined in the State, of which 4,466 were positive. It resulted, thus, in a 9.9% positivity rate. Conclusions: Our data are important because canine infection is an important risk factor for the human disease.
DOI: 10.6084/m9.figshare.6802475.v1
title: Epidemiological aspects of human and canine visceral leishmaniasis in State of Alagoas, Northeast, Brazil

description: Abstract Zoonotic visceral leishmaniasis (ZVL), caused by protozoans of the genus Leishmania, it is a worldwide of great importance disease. In the northeast region of Brazil, the state of Alagoas has an endemic status for ZVL. Thus, this work aimed to analyze the epidemiological situation of human and canine visceral leishmaniasis in Alagoas, Northeast, Brazil, from 2007 to 2013. We conducted a descriptive, observational, retrospective study using secondary data from the Notifiable Diseases Information System, the Center of Zoonosis Control of Maceió, and the Central Laboratory of Public Health of Alagoas. During the studied period, it was observed that the highest incidence of human visceral leishmaniasis was in 2011 and the lowest in 2013. On the other hand, canine visceral leishmaniasis had its highest incidence in 2007 and its lowest in 2012. Of the 55 municipalities in the State of Alagoas that showed human visceral leishmaniasis (HVL), São José da Tapera presented an average of 4.4 cases over the past five years, being classified as of intense transmission. Regarding canine visceral leishmaniasis, in the same studied period, 45,112 dogs were examined in the State, of which 4,466 were positive. It resulted, thus, in a 9.9% positivity rate. Conclusions: Our data are important because canine infection is an important risk factor for the human disease.
DOI: 10.6084/m9.figshare.6802466
title: Effect of Flame Spray Deposition Parameters on The Microstructure of Al2 O3 - 13 %TiO2 Coatings Applied Onto 7075 Aluminum Alloy

description: In this work, the effect of flame spraying parameters on physical, structural and microstructural characteristics of Al2O3 - 13 wt.% TiO2 (AT-13) coatings were studied. NiCrAl and AT-13 feedstock powders were used for spraying a bond coat (BC) and a top coat (TC), respectively, onto a 7075 aluminum alloy substrate. The effect of acetylene-to-oxygen ratio and the spraying distance on surface roughness, crystalline phases, porosity and thickness of top coat were analyzed. The results showed that for the evaluated spraying conditions, the volumetric oxy-fuel ratio had significant effects on roughness, porosity and crystalline phases of the coating. On the other hand, the spraying distance affected the thickness of the coating and did not influence the formation of Al2TiO5 phase; no significant effect of spraying distance on roughness was observed. The results showed that an acetylene: oxygen volumetric ratio of 1:2.5 is preferable to obtain higher melting of the ceramic powders and therefore a denser coating with major content of γ-Al2O3 crystalline phase.
DOI: 10.6084/m9.figshare.6802466.v1
title: Effect of Flame Spray Deposition Parameters on The Microstructure of Al2 O3 - 13 %TiO2 Coatings Applied Onto 7075 Aluminum Alloy

description: In this work, the effect of flame spraying parameters on physical, structural and microstructural characteristics of Al2O3 - 13 wt.% TiO2 (AT-13) coatings were studied. NiCrAl and AT-13 feedstock powders were used for spraying a bond coat (BC) and a top coat (TC), respectively, onto a 7075 aluminum alloy substrate. The effect of acetylene-to-oxygen ratio and the spraying distance on surface roughness, crystalline phases, porosity and thickness of top coat were analyzed. The results showed that for the evaluated spraying conditions, the volumetric oxy-fuel ratio had significant effects on roughness, porosity and crystalline phases of the coating. On the other hand, the spraying distance affected the thickness of the coating and did not influence the formation of Al2TiO5 phase; no significant effect of spraying distance on roughness was observed. The results showed that an acetylene: oxygen volumetric ratio of 1:2.5 is preferable to obtain higher melting of the ceramic powders and therefore a denser coating with major content of γ-Al2O3 crystalline phase.
DOI: 10.6084/m9.figshare.6802460
title: Enhancing the Supercapacitive and Superparamagnetic Performances of Iron Oxide Nanoparticles through Yttrium Cations Electro-chemical Doping

description: A one-pot electrosynthesis platform is reported for fabrication of Y3+ doped iron oxide nanoparticles (Y-IONPs). In this procedure, Y-IONPs are electro-deposited from an additive-free aqueous solution of iron(III) nitrate, iron(II) chloride and yttrium chloride. The analysis data provided by X-ray diffraction (XRD), field emission electron microscopy (FE-SEM) and energy-dispersive X-ray (EDX) confirmed that the deposited Y-IONPs sample is composed of magnetite nanoparticles (size≈20nm) doped with about 10wt% Y3+ cations. The performance of the prepared Y-IONPs as supercapacitor electrode material was studied using cyclic voltammetry (CV) and galvanostat charge-discharge (GCD) tests. The obtained electrochemical data showed that Y-IONPs provide SCs as high as 190.3 and 138.9 F g−1 at the discharge loads of 0.25 and 1 A g−1, respectively, and capacity retentions of 95.9% and 88.5% after 2000 GCD cycling. Furthermore, the results of vibrating sample magnetometer measurements confirmed better superparamagnetic behavior of Y-IONPs (Mr=0.32 emu g-1 and HCi= 6.31 G) as compared with pure IONPs (Mr=0.95 emu g-1 and HCi= 14.62 G) resulting from their lower Mr and Hci values. Based on the obtained results, the developed electro-synthesis method was introduced as a facile procedure for the preparation of high performance metal ion doped magnetite nanoparticles.
DOI: 10.6084/m9.figshare.6802460.v1
title: Enhancing the Supercapacitive and Superparamagnetic Performances of Iron Oxide Nanoparticles through Yttrium Cations Electro-chemical Doping

description: A one-pot electrosynthesis platform is reported for fabrication of Y3+ doped iron oxide nanoparticles (Y-IONPs). In this procedure, Y-IONPs are electro-deposited from an additive-free aqueous solution of iron(III) nitrate, iron(II) chloride and yttrium chloride. The analysis data provided by X-ray diffraction (XRD), field emission electron microscopy (FE-SEM) and energy-dispersive X-ray (EDX) confirmed that the deposited Y-IONPs sample is composed of magnetite nanoparticles (size≈20nm) doped with about 10wt% Y3+ cations. The performance of the prepared Y-IONPs as supercapacitor electrode material was studied using cyclic voltammetry (CV) and galvanostat charge-discharge (GCD) tests. The obtained electrochemical data showed that Y-IONPs provide SCs as high as 190.3 and 138.9 F g−1 at the discharge loads of 0.25 and 1 A g−1, respectively, and capacity retentions of 95.9% and 88.5% after 2000 GCD cycling. Furthermore, the results of vibrating sample magnetometer measurements confirmed better superparamagnetic behavior of Y-IONPs (Mr=0.32 emu g-1 and HCi= 6.31 G) as compared with pure IONPs (Mr=0.95 emu g-1 and HCi= 14.62 G) resulting from their lower Mr and Hci values. Based on the obtained results, the developed electro-synthesis method was introduced as a facile procedure for the preparation of high performance metal ion doped magnetite nanoparticles.