cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.20026613
title: Polymorphisms of the serotonin receptors genes in patients with bruxism: a systematic review

description: Abstract This study aimed to investigate if SNP rs6313, SNP rs2770304, SNP rs4941573, and SNP rs1923884 of the 5-HT2A receptor gene and SNP rs6295 of the 5-HT1A receptor gene are associated with bruxism etiology. Methodology This systematic review was registered in PROSPERO (CRD42018094561). A search was conducted for articles published in or before May 2021. To qualify for eligibility in this review, the studies had to be case-controls, cohort or cross-sectional. The inclusion criteria were the articles with a group of patients with bruxism and a control group in which the presence of these SNPs was evaluated. The exclusion criteria were the investigations of other polymorphisms, the studies that did not consider a control group for comparison, case reports, and reviews. The NOS and JBI were used to evaluate the methodological quality of studies. Results We conducted this study with databases, such as Web of Science, Scopus, Embase, PubMed/MEDLINE, and ProQuest. We considered four studies eligible. A total of 672 participants were included,187 with sleep bruxism, 105 with awake bruxism, 89 with sleep and awake bruxism, and 291 controls. One study found a strong association between the SNPs rs6313, rs2770304 and rs4941573 of the 5-HT2A receptor gene and sleep bruxism. In one study, we considered the C allele of the SNP rs2770304 a risk factor for sleep bruxism. We found no significant results of other SNPs in sleep bruxers compared to controls. We found no positive association concerning the SNPs and groups of awake bruxism and sleep and awake bruxism. Conclusion The different results regarding the SNPs in sleep bruxers could be explained by the genetic distinction between Chilean, Mexican, Japanese, and Polish population. More clinical trials and prospective studies must be conducted with larger sample size and in different ethnicities to confirm the results of this review.
DOI: 10.6084/m9.figshare.20026613.v1
title: Polymorphisms of the serotonin receptors genes in patients with bruxism: a systematic review

description: Abstract This study aimed to investigate if SNP rs6313, SNP rs2770304, SNP rs4941573, and SNP rs1923884 of the 5-HT2A receptor gene and SNP rs6295 of the 5-HT1A receptor gene are associated with bruxism etiology. Methodology This systematic review was registered in PROSPERO (CRD42018094561). A search was conducted for articles published in or before May 2021. To qualify for eligibility in this review, the studies had to be case-controls, cohort or cross-sectional. The inclusion criteria were the articles with a group of patients with bruxism and a control group in which the presence of these SNPs was evaluated. The exclusion criteria were the investigations of other polymorphisms, the studies that did not consider a control group for comparison, case reports, and reviews. The NOS and JBI were used to evaluate the methodological quality of studies. Results We conducted this study with databases, such as Web of Science, Scopus, Embase, PubMed/MEDLINE, and ProQuest. We considered four studies eligible. A total of 672 participants were included,187 with sleep bruxism, 105 with awake bruxism, 89 with sleep and awake bruxism, and 291 controls. One study found a strong association between the SNPs rs6313, rs2770304 and rs4941573 of the 5-HT2A receptor gene and sleep bruxism. In one study, we considered the C allele of the SNP rs2770304 a risk factor for sleep bruxism. We found no significant results of other SNPs in sleep bruxers compared to controls. We found no positive association concerning the SNPs and groups of awake bruxism and sleep and awake bruxism. Conclusion The different results regarding the SNPs in sleep bruxers could be explained by the genetic distinction between Chilean, Mexican, Japanese, and Polish population. More clinical trials and prospective studies must be conducted with larger sample size and in different ethnicities to confirm the results of this review.
DOI: 10.6084/m9.figshare.20026616.v1
title: In-vitro evaluation of the anti-cariogenic effect of a hybrid coating associated with encapsulated sodium fluoride and stannous chloride in nanoclays on enamel

description: Abstract Objective The aim of this study is to test, in vitro, the anti-cariogenic effect of experimental hybrid coatings, with nano clays of halloysite or bentonite, loaded with sodium fluoride or with a combination of sodium fluoride and stannous chloride, respectively. Methodology The varnish Fluor Protector (1,000 ppm of F-) was used as positive control and no treatment was the negative control. Enamel specimens (5 mm × 5 mm) were obtained from bovine teeth. The specimens (n=10) had their surfaces divided into two halves (5 mm × 2.5 mm each), in which one half received one of the treatments (Hybrid; Hybrid + NaF; Hybrid + NaF + SnCl2; Hybrid + NaF Loaded; Hybrid + NaF + SnCl2 Loaded). The specimens were submitted to a cariogenic challenge using a biofilm model (S. mutans UA159, for 5 days). Enamel surfaces both under and adjacent to the treated area were analyzed for mineral loss and lesion depth, by transverse microradiography. The pH of the medium was measured twice a day, and the fluoride release was analyzed. Additional specimens were submitted to confocal analysis. Results Data were statistically analyzed by two-way ANOVA followed by Tukey test (α=0.05). None of hybrid groups were able to reduce the lesion depth; the Hybrid + NaF group, however, was able to reduce mineral loss differing from the negative control (p=0.008). The groups showed no significant difference in the pH measurement and fluoride release. Confocal analysis confirmed that for all groups the biofilm growth was similar. Conclusion None of the hybrid groups reduced lesion depth, but the Hybrid + NaF group was able to promote protection against mineral loss.
DOI: 10.6084/m9.figshare.20026616
title: In-vitro evaluation of the anti-cariogenic effect of a hybrid coating associated with encapsulated sodium fluoride and stannous chloride in nanoclays on enamel

description: Abstract Objective The aim of this study is to test, in vitro, the anti-cariogenic effect of experimental hybrid coatings, with nano clays of halloysite or bentonite, loaded with sodium fluoride or with a combination of sodium fluoride and stannous chloride, respectively. Methodology The varnish Fluor Protector (1,000 ppm of F-) was used as positive control and no treatment was the negative control. Enamel specimens (5 mm × 5 mm) were obtained from bovine teeth. The specimens (n=10) had their surfaces divided into two halves (5 mm × 2.5 mm each), in which one half received one of the treatments (Hybrid; Hybrid + NaF; Hybrid + NaF + SnCl2; Hybrid + NaF Loaded; Hybrid + NaF + SnCl2 Loaded). The specimens were submitted to a cariogenic challenge using a biofilm model (S. mutans UA159, for 5 days). Enamel surfaces both under and adjacent to the treated area were analyzed for mineral loss and lesion depth, by transverse microradiography. The pH of the medium was measured twice a day, and the fluoride release was analyzed. Additional specimens were submitted to confocal analysis. Results Data were statistically analyzed by two-way ANOVA followed by Tukey test (α=0.05). None of hybrid groups were able to reduce the lesion depth; the Hybrid + NaF group, however, was able to reduce mineral loss differing from the negative control (p=0.008). The groups showed no significant difference in the pH measurement and fluoride release. Confocal analysis confirmed that for all groups the biofilm growth was similar. Conclusion None of the hybrid groups reduced lesion depth, but the Hybrid + NaF group was able to promote protection against mineral loss.
DOI: 10.6084/m9.figshare.20026621.v1
title: Temperature and moisture content effects on compressive strength parallel to the grain of paricá

description: The aim of this study is to evaluate the effect of the temperature and moisture content on the compressive strength parallel to the grain of paricá (Schizolobium amazonicum Huber ex. Ducke) from cultivated forests. The experiments were carried out on 3 timber samples under different conditions: heated (HT), thermal treatment (TT) and water saturated (WS). The HT sample consisted of 105 clear specimens assembled in 15 groups, the TT consisted of 90 clear specimens assembled in 15 groups and the WS consisted of 90 clear specimens assembled in 9 groups. The specimens from HT and WS samples were tested at a temperature range from 20 to 230 ºC and 20 to 100 ºC, respectively. The HT specimens were tested at ambient temperature, but after being submitted to thermal treatment. The HT, TT and WS samples present a decrease in the compressive strength, reaching 65%, 76% and 59% of the compressive strength at room temperature, respectively. The decrease in the compressive strength of the HT and WS samples can be associated to the thermal degradation of wood polymers and the moisture content. For the TT sample, the strength increased for a pre-heating temperature of up to 170 °C due to the reduction in the moisture content of the specimens.
DOI: 10.6084/m9.figshare.20026621
title: Temperature and moisture content effects on compressive strength parallel to the grain of paricá

description: The aim of this study is to evaluate the effect of the temperature and moisture content on the compressive strength parallel to the grain of paricá (Schizolobium amazonicum Huber ex. Ducke) from cultivated forests. The experiments were carried out on 3 timber samples under different conditions: heated (HT), thermal treatment (TT) and water saturated (WS). The HT sample consisted of 105 clear specimens assembled in 15 groups, the TT consisted of 90 clear specimens assembled in 15 groups and the WS consisted of 90 clear specimens assembled in 9 groups. The specimens from HT and WS samples were tested at a temperature range from 20 to 230 ºC and 20 to 100 ºC, respectively. The HT specimens were tested at ambient temperature, but after being submitted to thermal treatment. The HT, TT and WS samples present a decrease in the compressive strength, reaching 65%, 76% and 59% of the compressive strength at room temperature, respectively. The decrease in the compressive strength of the HT and WS samples can be associated to the thermal degradation of wood polymers and the moisture content. For the TT sample, the strength increased for a pre-heating temperature of up to 170 °C due to the reduction in the moisture content of the specimens.
DOI: 10.6084/m9.figshare.20026622
title: Chinese Bamboo flooring vs. Brazilian eucalyptus wooden floor: case study of the greenhouse gas emissions by transportation

description: The dissemination of allegedly more sustainable construction products, such as bamboo flooring imported from China, makes it crucial to understand how much more sustainable those products actually are when compared with their local equivalents. By analysing exclusively the emissions of greenhouse gases related to their transportation, this study compared two floor finish products: Chinese bamboo flooring and Brazilian eucalyptus wood floor. The analysis of the net emissions of greenhouse gases demonstrated that in the case of the bamboo flooring, its transportation across the world alone does not undermine the entire carbon sequestration potential of the material. However, its contribution to reducing the balance is significant. The transportation reduced the sequestration potential of the bamboo material by 28.1%, as opposed to a reduction of 1.4% for the locally produced eucalyptus wood. In addition, the study showed that despite the greater mass of material used per square meter of finished floor, the emissions of greenhouse gases by the transportation of eucalyptus wood is about 8 times lower than that of the bamboo flooring.
DOI: 10.6084/m9.figshare.20026622.v1
title: Chinese Bamboo flooring vs. Brazilian eucalyptus wooden floor: case study of the greenhouse gas emissions by transportation

description: The dissemination of allegedly more sustainable construction products, such as bamboo flooring imported from China, makes it crucial to understand how much more sustainable those products actually are when compared with their local equivalents. By analysing exclusively the emissions of greenhouse gases related to their transportation, this study compared two floor finish products: Chinese bamboo flooring and Brazilian eucalyptus wood floor. The analysis of the net emissions of greenhouse gases demonstrated that in the case of the bamboo flooring, its transportation across the world alone does not undermine the entire carbon sequestration potential of the material. However, its contribution to reducing the balance is significant. The transportation reduced the sequestration potential of the bamboo material by 28.1%, as opposed to a reduction of 1.4% for the locally produced eucalyptus wood. In addition, the study showed that despite the greater mass of material used per square meter of finished floor, the emissions of greenhouse gases by the transportation of eucalyptus wood is about 8 times lower than that of the bamboo flooring.
DOI: 10.6084/m9.figshare.20026625
title: OSB panels made with wood species from the Brazilian Northeast's caatinga

description: This research study aimed to evaluate the feasibility of OSB (Oriented Strand Board) production using wood species from the Brazilian Northeast's Caatinga: marmeleiro (Croton sonderianusMuell. Arg.), jurema-branca (Piptadenia stipulacea (Benth.) Ducke) and catanduva (PiptadeniamoniliformisBenth.) and castor-oil polyurethane bicomponent resin. The properties investigated were: density; thickness swelling and water absorption (2 hours and 24 hours); modulus of elasticity and bending strength in the parallel and perpendicular directions; internal bond and resistance to screw withdrawal from the face, according to EN standards. The results of the analysis of the physical and mechanical properties showed the possibility of manufacturing OSB with the cited species in the laboratory, according to the mean values and the variability of properties equivalent to those panels produced on industrial scale, and compared to EN standard requirements for OSB/3 and OSB/4. Variance analysis showed that OSB panels containing catanduva wood strands yielded the best results in terms of mechanical properties, as for the physical properties, the best performances were those of panels made with the marmeleiro and jurema-branca species.
DOI: 10.6084/m9.figshare.20026625.v1
title: OSB panels made with wood species from the Brazilian Northeast's caatinga

description: This research study aimed to evaluate the feasibility of OSB (Oriented Strand Board) production using wood species from the Brazilian Northeast's Caatinga: marmeleiro (Croton sonderianusMuell. Arg.), jurema-branca (Piptadenia stipulacea (Benth.) Ducke) and catanduva (PiptadeniamoniliformisBenth.) and castor-oil polyurethane bicomponent resin. The properties investigated were: density; thickness swelling and water absorption (2 hours and 24 hours); modulus of elasticity and bending strength in the parallel and perpendicular directions; internal bond and resistance to screw withdrawal from the face, according to EN standards. The results of the analysis of the physical and mechanical properties showed the possibility of manufacturing OSB with the cited species in the laboratory, according to the mean values and the variability of properties equivalent to those panels produced on industrial scale, and compared to EN standard requirements for OSB/3 and OSB/4. Variance analysis showed that OSB panels containing catanduva wood strands yielded the best results in terms of mechanical properties, as for the physical properties, the best performances were those of panels made with the marmeleiro and jurema-branca species.
DOI: 10.6084/m9.figshare.20026628
title: Considerations on the performance of precast concrete structures in fire situation

description: The increasing use of precast concrete as a structural solution for different types of buildings, such as industrial and commercial buildings, has become a good, accessible choice, especially regarding construction time. However, in a fire situation, certain characteristics of this construction system that are normally considered as advantages could become disadvantages. With large spaces, large open spans, good ventilation and the storage of flammable materials, these buildings provide the ideal setting for fire spreading and the consequent loss of structure carrying capacity. In this study, we present the implications of a project that uses precast concrete in a fire situation, and we raise points for discussion on alternatives to mitigate risks, based on national and international bibliographic references currently used by the technical and academic community.
DOI: 10.6084/m9.figshare.20026628.v1
title: Considerations on the performance of precast concrete structures in fire situation

description: The increasing use of precast concrete as a structural solution for different types of buildings, such as industrial and commercial buildings, has become a good, accessible choice, especially regarding construction time. However, in a fire situation, certain characteristics of this construction system that are normally considered as advantages could become disadvantages. With large spaces, large open spans, good ventilation and the storage of flammable materials, these buildings provide the ideal setting for fire spreading and the consequent loss of structure carrying capacity. In this study, we present the implications of a project that uses precast concrete in a fire situation, and we raise points for discussion on alternatives to mitigate risks, based on national and international bibliographic references currently used by the technical and academic community.
DOI: 10.6084/m9.figshare.20026630.v1
title: Verification of the efficiency of Mohler model in the response of the behavior of wood and concrete composite beams

description: The aim of this research study was to evaluate the structural behaviour of the wood and concrete composite system for bridge decks with emphasis on the metal shear connectors. Experimental tests were performed on composite specimens and wood and concrete beams with a metallic connector system in an X position, using CS100900-type screws. All specimens and beams were submitted to static loads until failure in order to obtain the strength and stiffness of the connection system. The experimental results for the stiffness of the beams were compared with the analytical results obtained through the Mohler model, presenting good equivalence for service loads. The experimental results obtained demonstrate that the most significant damage in composite systems occurred in the connectors' areas.
DOI: 10.6084/m9.figshare.20026631.v1
title: Utility tunnels assessment applied to the Agua Branca urban development area, in Sao Paulo, Brazil

description: Urban infrastructure networks are usually deployed and managed in an isolated form, and are rarely considered as a whole. As a consequence, the available urban underground space is increasingly reduced, resulting in congestion and disruption. This article analyses and discusses alternative ways of organizing infrastructure networks in the urban subsurface, considering utility tunnels compared to ordinary independent trenches. Utility tunnels gather several urban infrastructure networks in a single underground structure. The analysis was based on the application of selected parameters to the Agua Branca urban development area, located in Sao Paulo, Brazil. According to physical and urban planning criteria, utility tunnels represent a structured system for the occupation of the urban subsoil and surface, considering efficiency, organization and safety. From an economic perspective, technical galleries have a high initial cost of deployment, making them unattractive when analysed only under this criterion. On the other hand, from a life cycle perspective, they represent an attractive solution due to their lower operation costs and the impacts involved in maintaining and expanding urban networks.
DOI: 10.6084/m9.figshare.20026630
title: Verification of the efficiency of Mohler model in the response of the behavior of wood and concrete composite beams

description: The aim of this research study was to evaluate the structural behaviour of the wood and concrete composite system for bridge decks with emphasis on the metal shear connectors. Experimental tests were performed on composite specimens and wood and concrete beams with a metallic connector system in an X position, using CS100900-type screws. All specimens and beams were submitted to static loads until failure in order to obtain the strength and stiffness of the connection system. The experimental results for the stiffness of the beams were compared with the analytical results obtained through the Mohler model, presenting good equivalence for service loads. The experimental results obtained demonstrate that the most significant damage in composite systems occurred in the connectors' areas.
DOI: 10.6084/m9.figshare.20026631
title: Utility tunnels assessment applied to the Agua Branca urban development area, in Sao Paulo, Brazil

description: Urban infrastructure networks are usually deployed and managed in an isolated form, and are rarely considered as a whole. As a consequence, the available urban underground space is increasingly reduced, resulting in congestion and disruption. This article analyses and discusses alternative ways of organizing infrastructure networks in the urban subsurface, considering utility tunnels compared to ordinary independent trenches. Utility tunnels gather several urban infrastructure networks in a single underground structure. The analysis was based on the application of selected parameters to the Agua Branca urban development area, located in Sao Paulo, Brazil. According to physical and urban planning criteria, utility tunnels represent a structured system for the occupation of the urban subsoil and surface, considering efficiency, organization and safety. From an economic perspective, technical galleries have a high initial cost of deployment, making them unattractive when analysed only under this criterion. On the other hand, from a life cycle perspective, they represent an attractive solution due to their lower operation costs and the impacts involved in maintaining and expanding urban networks.
DOI: 10.6084/m9.figshare.20026642
title: High reactivity pozzolan: a critical evaluation of Pozzolanic Activity Index (PAI) with lime using X-Ray Diffraction

description: Mineral pozzolanic admixtures are present in many of cementitious materials used in the production of structural concrete. The selection of the pozzolan requires prior characterization of its reactive potential, which can be obtained directly by using the modified Chapelle test, or indirectly, by performing a compressive strength test of the mortar with Portland cement or hydrated lime. The objective of this study is to quantify the pozzolanic activity index with lime of rice husk ash, silica fume and metakaolin, as well as the use of fillers such as limestone and quartz dust as inert reference material. The X-ray diffraction (XRD) of pastes identical to those used in standard mortars allows us to analyse portlandite consumption, an essential indicative of pozzolanic activity. The combined analysis of IAP with lime and X-ray diffraction (XRD) is aimed at verifying the rate of consumption of calcium hydroxide in the mixtures recommended by standard procedures, creating an opportunity to critically analyse their suitability. The results indicate that the NBR 5751 procedure is not appropriate to compare the reactive potential of super pozzolan, since the investigation showed that the amount of lime in the mixture was completely consumed, preventing a comparative evaluation of the compressive strength results based on standardized testing.