cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.19905024
title: Action of disinfectant solutions on adaptive capacity and virulence factors of the Candida spp. biofilms formed on acrylic resin

description: Abstract Understanding the behavior of Candida spp. when exposed to denture disinfectants is essential to optimize their effectiveness. Changes in the virulence factors may cause increased resistance of Candida spp. to disinfectant agents. Objective To evaluate the microbial load, cellular metabolism, hydrolytic enzyme production, hyphae formation, live cell and biofilm quantification of Candida albicans, Candida tropicalis and Candida glabrata after exposure to disinfectant solutions. Methodology Simple biofilms were grown on heat-polymerized acrylic resin specimens, and divided into groups according to solutions/strains: distilled water (control); 0.25% sodium hypochlorite (NaOCl 0.25% ); 10% Ricinus communis (RC 10%); and 0.5% Chloramine T (CT 0.5%). The virulence factors were evaluated using the CFU count (microbial load), XTT method (cell metabolism), epifluorescence microscopy (biofilm removal and live or dead cells adhered), protease and phospholipase production and hyphae formation. Data were analyzed (α=0.05) by one-way ANOVA/ Tukey post hoc test, Kruskal-Wallis test and Wilcoxon test. Results NaOCl 0.25% was the most effective solution. CT 0.5% reduced the number of CFUs more than RC 10% and the control. RC 10% was effective only against C. glabrata. RC 10% and CT 0.5% decreased the cellular metabolism of C. albicans and C. glabrata. Enzyme production was not affected. Hyphal growth in the RC 10% and CT 0.5% groups was similar to that of the control. CT 0.5% was better than RC 10% against C. albicans and C. tropicalis when measuring the total amount of biofilm and number of living cells. For C. glabrata, CT 0.5% was equal to RC 10% in the maintenance of living cells; RC 10% was superior for biofilm removal. Conclusions The CT 0.5% achieved better results than those of Ricinus communis at 10%, favoring the creation of specific products for dentures. Adjustments in the formulations of RC 10% are necessary due to efficacy against C. glabrata. The NaOCl 0.25% is the most effective and could be suitable for use as a positive control.
DOI: 10.6084/m9.figshare.19905024.v1
title: Action of disinfectant solutions on adaptive capacity and virulence factors of the Candida spp. biofilms formed on acrylic resin

description: Abstract Understanding the behavior of Candida spp. when exposed to denture disinfectants is essential to optimize their effectiveness. Changes in the virulence factors may cause increased resistance of Candida spp. to disinfectant agents. Objective To evaluate the microbial load, cellular metabolism, hydrolytic enzyme production, hyphae formation, live cell and biofilm quantification of Candida albicans, Candida tropicalis and Candida glabrata after exposure to disinfectant solutions. Methodology Simple biofilms were grown on heat-polymerized acrylic resin specimens, and divided into groups according to solutions/strains: distilled water (control); 0.25% sodium hypochlorite (NaOCl 0.25% ); 10% Ricinus communis (RC 10%); and 0.5% Chloramine T (CT 0.5%). The virulence factors were evaluated using the CFU count (microbial load), XTT method (cell metabolism), epifluorescence microscopy (biofilm removal and live or dead cells adhered), protease and phospholipase production and hyphae formation. Data were analyzed (α=0.05) by one-way ANOVA/ Tukey post hoc test, Kruskal-Wallis test and Wilcoxon test. Results NaOCl 0.25% was the most effective solution. CT 0.5% reduced the number of CFUs more than RC 10% and the control. RC 10% was effective only against C. glabrata. RC 10% and CT 0.5% decreased the cellular metabolism of C. albicans and C. glabrata. Enzyme production was not affected. Hyphal growth in the RC 10% and CT 0.5% groups was similar to that of the control. CT 0.5% was better than RC 10% against C. albicans and C. tropicalis when measuring the total amount of biofilm and number of living cells. For C. glabrata, CT 0.5% was equal to RC 10% in the maintenance of living cells; RC 10% was superior for biofilm removal. Conclusions The CT 0.5% achieved better results than those of Ricinus communis at 10%, favoring the creation of specific products for dentures. Adjustments in the formulations of RC 10% are necessary due to efficacy against C. glabrata. The NaOCl 0.25% is the most effective and could be suitable for use as a positive control.
DOI: 10.6084/m9.figshare.19905026
title: Length-weight relationship and diet of the catfish Cambeva guareiensis (Siluriformes; Trichomycteridae)

description: Abstract: The length-weight relationship (LWR) and diet of a small trichomycterid catfish, Cambeva guareiensis, was studied based on 58 specimens captured in Corrente stream, Guareí River basin, São Paulo, Brazil. LWR analyses showed values of a ranged from 0.0097 to 0.0149 and b from 2.858 to 3.250. The analysis of the diet showed that high amounts of aquatic insects (93.75% of total items) were consumed by the species. In addition, we found no statistically significant differences when comparing the diet between the dry and rainy periods. Our study contributes to the knowledge on populational biology and feeding ecology of trichomycterid fishes in Brazilian streams.
DOI: 10.6084/m9.figshare.19905026.v1
title: Length-weight relationship and diet of the catfish Cambeva guareiensis (Siluriformes; Trichomycteridae)

description: Abstract: The length-weight relationship (LWR) and diet of a small trichomycterid catfish, Cambeva guareiensis, was studied based on 58 specimens captured in Corrente stream, Guareí River basin, São Paulo, Brazil. LWR analyses showed values of a ranged from 0.0097 to 0.0149 and b from 2.858 to 3.250. The analysis of the diet showed that high amounts of aquatic insects (93.75% of total items) were consumed by the species. In addition, we found no statistically significant differences when comparing the diet between the dry and rainy periods. Our study contributes to the knowledge on populational biology and feeding ecology of trichomycterid fishes in Brazilian streams.
DOI: 10.6084/m9.figshare.19905029
title: Complete denture hygiene solutions: antibiofilm activity and effects on physical and mechanical properties of acrylic resin

description: Abstract Appropriated denture hygiene is a predictive factor for longevity of rehabilitation treatment and maintenance of the oral mucosal health. Although, disinfectant solutions are commonly used as denture cleansers, the impact of these solutions on acrylic resin-based dentures remain unclear. Objective To evaluate, in vitro, the antibiofilm activity of complete denture hygiene solutions and their effects on physical and mechanical properties of acrylic resin. Methodology For antibiofilm activity measurement acrylic resin specimens were contaminated with Candida albicans, Candida glabrata and Streptococcus mutans. After biofilm growth, the specimens were assigned to the hygiene solutions: Distilled water (Control); 0.2% Sodium hypochlorite (SH); Efferdent Power Clean Crystals (EPC) and 6.25% Ricinus communis (RC). The viability of microorganisms was evaluated by agar plate counts. In parallel, physical, and mechanical properties of the acrylic resin were evaluated after simulating a 5-year period of daily immersion in the previously mentioned solutions. The changes in surface roughness, color, microhardness, flexural strength, impact strength, sorption and solubility were evaluated. Data were compared by ANOVA followed by the Tukey test or Kruskal-Wallis followed by the Dunn test depending on the distribution (α=0.05). Results Regarding antibiofilm action, SH eliminated all microorganisms while EPC and RC exhibited moderate action against S. mutans (p=0.001) and C. glabrata (p&lt;0.001), respectively. Relative to effects on the physical and mechanical properties of the acrylic resin, RC led to higher values of color change (p=0.030), hardness (p&lt;0.001), surface roughness (p=0.006) and flexural strength (p&lt;0.001). Moreover, RC induced the highest values of changes in solubility (p&lt;0.001). EPC promoted greater changes in surface morphology, whereas immersion in SH retained the initial appearance of the acrylic resin surface. All hygiene solutions reduced the impact strength (p&lt;0.05). Conclusion SH presented the most effective antibiofilm activity. In addition, changes on properties were observed after immersion in RC, which were considered within acceptable limits.
DOI: 10.6084/m9.figshare.19905029.v1
title: Complete denture hygiene solutions: antibiofilm activity and effects on physical and mechanical properties of acrylic resin

description: Abstract Appropriated denture hygiene is a predictive factor for longevity of rehabilitation treatment and maintenance of the oral mucosal health. Although, disinfectant solutions are commonly used as denture cleansers, the impact of these solutions on acrylic resin-based dentures remain unclear. Objective To evaluate, in vitro, the antibiofilm activity of complete denture hygiene solutions and their effects on physical and mechanical properties of acrylic resin. Methodology For antibiofilm activity measurement acrylic resin specimens were contaminated with Candida albicans, Candida glabrata and Streptococcus mutans. After biofilm growth, the specimens were assigned to the hygiene solutions: Distilled water (Control); 0.2% Sodium hypochlorite (SH); Efferdent Power Clean Crystals (EPC) and 6.25% Ricinus communis (RC). The viability of microorganisms was evaluated by agar plate counts. In parallel, physical, and mechanical properties of the acrylic resin were evaluated after simulating a 5-year period of daily immersion in the previously mentioned solutions. The changes in surface roughness, color, microhardness, flexural strength, impact strength, sorption and solubility were evaluated. Data were compared by ANOVA followed by the Tukey test or Kruskal-Wallis followed by the Dunn test depending on the distribution (α=0.05). Results Regarding antibiofilm action, SH eliminated all microorganisms while EPC and RC exhibited moderate action against S. mutans (p=0.001) and C. glabrata (p&lt;0.001), respectively. Relative to effects on the physical and mechanical properties of the acrylic resin, RC led to higher values of color change (p=0.030), hardness (p&lt;0.001), surface roughness (p=0.006) and flexural strength (p&lt;0.001). Moreover, RC induced the highest values of changes in solubility (p&lt;0.001). EPC promoted greater changes in surface morphology, whereas immersion in SH retained the initial appearance of the acrylic resin surface. All hygiene solutions reduced the impact strength (p&lt;0.05). Conclusion SH presented the most effective antibiofilm activity. In addition, changes on properties were observed after immersion in RC, which were considered within acceptable limits.
DOI: 10.6084/m9.figshare.19905030
title: The theoretical makeup / configuration of Scholastic Digital Discourse in Chemistry

description: Abstract: This paper aims to present the theoretical configuration of the notion of Scholastic Digital Discourse related to Chemistry (DDErQ, by its acronym in Spanish), a proposal that seeks to constitute a possible place for the interpretation, understanding and resignification of future school practices associated with the teaching of this science by taking as an entry point/perspective the Initial Teacher Training in the field of Chemical Education. According to this proposal, the main theoretical references that make up this notion are derived, on the one hand, from the Discourse Analysis in its aspect initiated in France by Pêcheux and developed widely in Brazil by Eni Orlandi. And, on the other hand, derive from branches that, based on this theoretical affiliation, were published in the field of so-called natural sciences by Almeida, and in the field of new language technologies by Dias.
DOI: 10.6084/m9.figshare.19905030.v1
title: The theoretical makeup / configuration of Scholastic Digital Discourse in Chemistry

description: Abstract: This paper aims to present the theoretical configuration of the notion of Scholastic Digital Discourse related to Chemistry (DDErQ, by its acronym in Spanish), a proposal that seeks to constitute a possible place for the interpretation, understanding and resignification of future school practices associated with the teaching of this science by taking as an entry point/perspective the Initial Teacher Training in the field of Chemical Education. According to this proposal, the main theoretical references that make up this notion are derived, on the one hand, from the Discourse Analysis in its aspect initiated in France by Pêcheux and developed widely in Brazil by Eni Orlandi. And, on the other hand, derive from branches that, based on this theoretical affiliation, were published in the field of so-called natural sciences by Almeida, and in the field of new language technologies by Dias.
DOI: 10.6084/m9.figshare.19905032.v1
title: Edaphic fauna and soil properties under different managements in areas impacted by natural disaster in a mountainous region

description: ABSTRACT Soil invertebrate fauna plays a major role in several environmental processes, and its absence can negatively impact ecosystem health. This study aimed to assess the recovery of epigeal and edaphic invertebrate faunal communities following an environmental disaster, with landslides, mudflow, and river floods, in sites under different management systems, the effects of cover crops on invertebrate fauna, and their relationship with soil physical and chemical properties in the mountainous region of Rio de Janeiro State, Brazil. The following sites were evaluated: CF, a site under conventional farming without any record of natural hazard events; LS, a site impacted by an intense landslide event that left the area buried by mudflow; RO1, a site affected by river overflow and treated with NPK fertilizer and poultry litter; RO2, a site affected by river overflow and subjected to liming and heavy fertilization with NPK; and RO3, a site affected by a less intense river overflow and subjected to fertilization with poultry litter and NPK fertilizer. At each site, epigeal and edaphic fauna were sampled using pitfall traps and a monolith sampler, respectively. Physical (soil temperature, moisture, aggregate stability, and density) and chemical (pH in water, Ca2+, Mg2+, Al3+, K+, P, cation-exchange capacity, and total organic carbon) properties were determined in the 0.00-0.05 and 0.00-0.10 m layers. The predominant epigeal faunal groups were Entomobryomorpha, Poduromorpha, Diptera, and Coleoptera; and the predominant edaphic faunal groups, Coleoptera and Oligochaeta. There was a positive correlation between Coleoptera larvae, Hymenoptera, and species richness with total organic carbon. Coleoptera larvae were positively associated with biogenic aggregate stability, whereas Coleoptera was positively associated with physicogenic aggregate stability. Oligochaeta showed a positive correlation with soil moisture. Cover crops favored the development of epigeal and edaphic faunal groups that enhance soil properties through organic matter fragmentation and decomposition, and structural engineering. The strong correlation between soil chemical, physical, and biological properties demonstrate the importance of monitoring these components to assess the recovery of disaster-affected areas.
DOI: 10.6084/m9.figshare.19905032
title: Edaphic fauna and soil properties under different managements in areas impacted by natural disaster in a mountainous region

description: ABSTRACT Soil invertebrate fauna plays a major role in several environmental processes, and its absence can negatively impact ecosystem health. This study aimed to assess the recovery of epigeal and edaphic invertebrate faunal communities following an environmental disaster, with landslides, mudflow, and river floods, in sites under different management systems, the effects of cover crops on invertebrate fauna, and their relationship with soil physical and chemical properties in the mountainous region of Rio de Janeiro State, Brazil. The following sites were evaluated: CF, a site under conventional farming without any record of natural hazard events; LS, a site impacted by an intense landslide event that left the area buried by mudflow; RO1, a site affected by river overflow and treated with NPK fertilizer and poultry litter; RO2, a site affected by river overflow and subjected to liming and heavy fertilization with NPK; and RO3, a site affected by a less intense river overflow and subjected to fertilization with poultry litter and NPK fertilizer. At each site, epigeal and edaphic fauna were sampled using pitfall traps and a monolith sampler, respectively. Physical (soil temperature, moisture, aggregate stability, and density) and chemical (pH in water, Ca2+, Mg2+, Al3+, K+, P, cation-exchange capacity, and total organic carbon) properties were determined in the 0.00-0.05 and 0.00-0.10 m layers. The predominant epigeal faunal groups were Entomobryomorpha, Poduromorpha, Diptera, and Coleoptera; and the predominant edaphic faunal groups, Coleoptera and Oligochaeta. There was a positive correlation between Coleoptera larvae, Hymenoptera, and species richness with total organic carbon. Coleoptera larvae were positively associated with biogenic aggregate stability, whereas Coleoptera was positively associated with physicogenic aggregate stability. Oligochaeta showed a positive correlation with soil moisture. Cover crops favored the development of epigeal and edaphic faunal groups that enhance soil properties through organic matter fragmentation and decomposition, and structural engineering. The strong correlation between soil chemical, physical, and biological properties demonstrate the importance of monitoring these components to assess the recovery of disaster-affected areas.
DOI: 10.6084/m9.figshare.19905033
title: The “Boletim da Clínica Psiquiátrica da FMUPS,” 1962-1971: a forgotten publication and portrait of an era

description: Abstract This article describes the Boletim da Clínica Psiquiátrica da Faculdade de Medicina da Universidade de São Paulo, which was published from 1962 to 1971. This was the first scientific publication of the Psychiatric Clinic, and was replaced by the Revista de Psiquiatria Clínica, which still exists today. The Boletim is a valuable source for historical research, spanning a decade of Brazilian psychiatry, and contains a variety of content: medication trials, theoretical discussions, current events, and institutional issues related to the development of psychiatry and related areas such as psychology and psychoanalysis, as well as the arrival of medications and the search for standardized diagnoses.
DOI: 10.6084/m9.figshare.19905033.v1
title: The “Boletim da Clínica Psiquiátrica da FMUPS,” 1962-1971: a forgotten publication and portrait of an era

description: Abstract This article describes the Boletim da Clínica Psiquiátrica da Faculdade de Medicina da Universidade de São Paulo, which was published from 1962 to 1971. This was the first scientific publication of the Psychiatric Clinic, and was replaced by the Revista de Psiquiatria Clínica, which still exists today. The Boletim is a valuable source for historical research, spanning a decade of Brazilian psychiatry, and contains a variety of content: medication trials, theoretical discussions, current events, and institutional issues related to the development of psychiatry and related areas such as psychology and psychoanalysis, as well as the arrival of medications and the search for standardized diagnoses.
DOI: 10.6084/m9.figshare.19905044
title: Determination of gill-net selectivity for King Fish (Scomberomorus Commerson, Lacepede 1800) using Mesh size in Sungailiat, Bangka Belitung Province

description: Abstract Selectivity is a fishing gear characteristic capable of catching fish of a specific size and species from the existing population distribution. Mesh size is one of the important factors that influence gillnets’ selectivity, because different length-classes of fish are caught by them. This report focuses on the selectivity of two mesh sizes of gillnets (8.89 cm and 10.16 cm) on mackerel's catch and constructing a gillnet in Sungailiat waters. Experimental fishing methods and selectivity analysis were used for the fishing gear’s more selective preparation, if the largest fishing ratio's value at the fork length (L) is high and the standard deviation value (S) is closer to 1. It is concluded that to be more selective a largest S (L) value of 0.999267194 at fork length (L=54.95 cm), and with a larger value of S (L) 0.997096071 and with (L=66.55 cm) for mesh Sizes 8.89 cm and 10.16 cm, respectively.
DOI: 10.6084/m9.figshare.19905044.v1
title: Determination of gill-net selectivity for King Fish (Scomberomorus Commerson, Lacepede 1800) using Mesh size in Sungailiat, Bangka Belitung Province

description: Abstract Selectivity is a fishing gear characteristic capable of catching fish of a specific size and species from the existing population distribution. Mesh size is one of the important factors that influence gillnets’ selectivity, because different length-classes of fish are caught by them. This report focuses on the selectivity of two mesh sizes of gillnets (8.89 cm and 10.16 cm) on mackerel's catch and constructing a gillnet in Sungailiat waters. Experimental fishing methods and selectivity analysis were used for the fishing gear’s more selective preparation, if the largest fishing ratio's value at the fork length (L) is high and the standard deviation value (S) is closer to 1. It is concluded that to be more selective a largest S (L) value of 0.999267194 at fork length (L=54.95 cm), and with a larger value of S (L) 0.997096071 and with (L=66.55 cm) for mesh Sizes 8.89 cm and 10.16 cm, respectively.
DOI: 10.6084/m9.figshare.19905047
title: The Casa da Ciência and challenges of a cultural center for scientific dissemination at the Universidade Federal do Rio de Janeiro

description: Abstract The Casa da Ciência at the Universidade Federal do Rio de Janeiro is a cultural center meant to stir curiosity by connecting science, art, and culture. Different languages are used in an entertaining and interactive manner to discuss and popularize scientific concepts. This bibliographical and exploratory article addresses the historical aspects around the creation of the institution, its function, and its funding. It also provides a brief history of contemporary scientific dissemination in Brazil. A reflection on cultural, artistic and scientific/cultural policy for the implementation of the university’s integrated system for museums, collections, and university heritage is also included, and indicates the difficulties in the processes of institutionalizing these spaces.
DOI: 10.6084/m9.figshare.19905047.v1
title: The Casa da Ciência and challenges of a cultural center for scientific dissemination at the Universidade Federal do Rio de Janeiro

description: Abstract The Casa da Ciência at the Universidade Federal do Rio de Janeiro is a cultural center meant to stir curiosity by connecting science, art, and culture. Different languages are used in an entertaining and interactive manner to discuss and popularize scientific concepts. This bibliographical and exploratory article addresses the historical aspects around the creation of the institution, its function, and its funding. It also provides a brief history of contemporary scientific dissemination in Brazil. A reflection on cultural, artistic and scientific/cultural policy for the implementation of the university’s integrated system for museums, collections, and university heritage is also included, and indicates the difficulties in the processes of institutionalizing these spaces.