cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5666893
title: Synthesis and Characterization of LiCoO2 from Different Precursors by Sol-Gel Method

description: Lithium cobalt oxide, LiCoO2, widely used as cathode in lithium ion batteries was synthesized and their structural and electronic properties investigated. The crystalline powders were prepared by the sol-gel method with four complexing agents: citric acid, glycine, starch and gelatin. These syntheses were compared with the blank test (without complexing agent). The X-ray diffraction and vibrational spectroscopy allowed the identification of the rhombohedral phase LiCoO2 (R3m) as the only or principal crystalline component in all samples. A small fraction of a second phase of cubic spinel Co3O4 was observed in the samples of starch, gelatin and the blank test. The Rietveld refinements showed small structural variations, indicating reduced influence of the complexing agents on the synthesis. The theoretical HOMO-LUMO (highest occupied molecular orbital-lowest unoccupied molecular orbital) gap values are in agreement to those estimated by diffuse reflectance spectroscopy (DRS). The scanning electron microscopy (SEM) showed morphological pattern regardless of the complexing agent used, showing an alternative method.
DOI: 10.6084/m9.figshare.5666893.v1
title: Synthesis and Characterization of LiCoO2 from Different Precursors by Sol-Gel Method

description: Lithium cobalt oxide, LiCoO2, widely used as cathode in lithium ion batteries was synthesized and their structural and electronic properties investigated. The crystalline powders were prepared by the sol-gel method with four complexing agents: citric acid, glycine, starch and gelatin. These syntheses were compared with the blank test (without complexing agent). The X-ray diffraction and vibrational spectroscopy allowed the identification of the rhombohedral phase LiCoO2 (R3m) as the only or principal crystalline component in all samples. A small fraction of a second phase of cubic spinel Co3O4 was observed in the samples of starch, gelatin and the blank test. The Rietveld refinements showed small structural variations, indicating reduced influence of the complexing agents on the synthesis. The theoretical HOMO-LUMO (highest occupied molecular orbital-lowest unoccupied molecular orbital) gap values are in agreement to those estimated by diffuse reflectance spectroscopy (DRS). The scanning electron microscopy (SEM) showed morphological pattern regardless of the complexing agent used, showing an alternative method.
DOI: 10.6084/m9.figshare.5666887
title: Análise Fatorial do Sistema Agroindustrial do Biodiesel no Brasil e na União Europeia

description: Abstract: This paper aims to analyze comparatively the main factors involved in the coordination of the agro-industrial system of biodiesel (AIS of biodiesel) in Brazil and the European Union, from the perspective of the stakeholders of this system. For this, a questionnaire was developed and the comparison was done by factor analysis. The results showed that similar factors are related to taxation and international trade, labor unions and associations representing the biodiesel plants and diversification, acquisition of family farming/small producer and guaranteeing supply. The different factors are: (1) in Brazil: growth strategies, competitiveness of plants, differentiation of plants, incentives for biodiesel production, general policies on biofuels, biodiesel production technologies and specific national policies and (2) in the the European Union: differentiation in the production of biodiesel and support organizations. The results also showed the existence of a trade-off regarding to the technological advances on the AIS of biodiesel. If, on the one hand, the inclusion of family farmers and smallholders in the economy is one of the factors to be considered for the sustainability of the system, on the other hand, the development of this, seeking to resolve the conflict food versus biofuels, marginalizes these producers.
DOI: 10.6084/m9.figshare.5666887.v1
title: Análise Fatorial do Sistema Agroindustrial do Biodiesel no Brasil e na União Europeia

description: Abstract: This paper aims to analyze comparatively the main factors involved in the coordination of the agro-industrial system of biodiesel (AIS of biodiesel) in Brazil and the European Union, from the perspective of the stakeholders of this system. For this, a questionnaire was developed and the comparison was done by factor analysis. The results showed that similar factors are related to taxation and international trade, labor unions and associations representing the biodiesel plants and diversification, acquisition of family farming/small producer and guaranteeing supply. The different factors are: (1) in Brazil: growth strategies, competitiveness of plants, differentiation of plants, incentives for biodiesel production, general policies on biofuels, biodiesel production technologies and specific national policies and (2) in the the European Union: differentiation in the production of biodiesel and support organizations. The results also showed the existence of a trade-off regarding to the technological advances on the AIS of biodiesel. If, on the one hand, the inclusion of family farmers and smallholders in the economy is one of the factors to be considered for the sustainability of the system, on the other hand, the development of this, seeking to resolve the conflict food versus biofuels, marginalizes these producers.
DOI: 10.6084/m9.figshare.5666884
title: A new era of thromboelastometry

description: ABSTRACT Severe hemorrhage with necessity of allogeneic blood transfusion is common complication in intensive care unit and is associated with increased morbidity and mortality. Prompt recognition and treatment of bleeding causes becomes essential for the effective control of hemorrhage, rationalizing the use of allogeneic blood components, and in this way, preventing an occurrence of their potential adverse effects. Conventional coagulation tests such as prothrombin time and activated partial thromboplastin time present limitations in predicting bleeding and guiding transfusion therapy in critically ill patients. Viscoelastic tests such as thromboelastography and rotational thromboelastometry allow rapid detection of coagulopathy and goal-directed therapy with specific hemostatic drugs. The new era of thromboelastometry relies on its efficacy, practicality, reproducibility and cost-effectiveness to establish itself as the main diagnostic tool and transfusion guide in patients with severe active bleeding.
DOI: 10.6084/m9.figshare.5666884.v1
title: A new era of thromboelastometry

description: ABSTRACT Severe hemorrhage with necessity of allogeneic blood transfusion is common complication in intensive care unit and is associated with increased morbidity and mortality. Prompt recognition and treatment of bleeding causes becomes essential for the effective control of hemorrhage, rationalizing the use of allogeneic blood components, and in this way, preventing an occurrence of their potential adverse effects. Conventional coagulation tests such as prothrombin time and activated partial thromboplastin time present limitations in predicting bleeding and guiding transfusion therapy in critically ill patients. Viscoelastic tests such as thromboelastography and rotational thromboelastometry allow rapid detection of coagulopathy and goal-directed therapy with specific hemostatic drugs. The new era of thromboelastometry relies on its efficacy, practicality, reproducibility and cost-effectiveness to establish itself as the main diagnostic tool and transfusion guide in patients with severe active bleeding.
DOI: 10.6084/m9.figshare.5666875
title: Evaluation of the immunogenicity of Schistosoma mansoni egg surface

description: Abstract INTRODUCTION Immunogenicity of Schistosoma mansoni egg surface was examined to determine whether intact eggshells have lower antigenicity than ruptured eggs. METHODS: Swiss Webster mice were inoculated with intact or ultrasonicated S. mansoni eggs isolated from infected human feces. Mice were separated into four groups of six animals each and immunizations were performed approximately every 20 days during a 60-day period. Groups 1-4 were administered with saline solution, sonicated eggs with Freund’s adjuvant, sonicated eggs without Freund’s adjuvant, and intact eggs, respectively. IgG humoral immune response was assessed by ELISA using Soluble Egg Antigen produced from eggs isolated from the livers of infected mice. RESULTS Sonicated eggs co-administered with adjuvant induced the highest humoral response at 58 days, which was 11.9-fold (95% CI 6.2-17.5) greater than the response induced by saline solution. Sonicated eggs without adjuvant induced a 4.3-fold stronger response (95% CI 2.4-6.2) than normal saline. Intact eggs induced humoral response that was nominally twice stronger (95% CI 0.8-3.2) than that induced by normal saline but the effect did not reach statistical significance. CONCLUSIONS Soluble antigens are not abundant on the surface of S. mansoni eggs and/or are not secreted in sufficient quantities to induce a significant immune response to intact eggs. Assuming that isolation procedures had not damaged the eggs used for inoculation, our observations suggest that intact eggs either do not induce a significant immune response or, if they do, the mechanism involves insoluble antigens from the egg surface.
DOI: 10.6084/m9.figshare.5666875.v1
title: Evaluation of the immunogenicity of Schistosoma mansoni egg surface

description: Abstract INTRODUCTION Immunogenicity of Schistosoma mansoni egg surface was examined to determine whether intact eggshells have lower antigenicity than ruptured eggs. METHODS: Swiss Webster mice were inoculated with intact or ultrasonicated S. mansoni eggs isolated from infected human feces. Mice were separated into four groups of six animals each and immunizations were performed approximately every 20 days during a 60-day period. Groups 1-4 were administered with saline solution, sonicated eggs with Freund’s adjuvant, sonicated eggs without Freund’s adjuvant, and intact eggs, respectively. IgG humoral immune response was assessed by ELISA using Soluble Egg Antigen produced from eggs isolated from the livers of infected mice. RESULTS Sonicated eggs co-administered with adjuvant induced the highest humoral response at 58 days, which was 11.9-fold (95% CI 6.2-17.5) greater than the response induced by saline solution. Sonicated eggs without adjuvant induced a 4.3-fold stronger response (95% CI 2.4-6.2) than normal saline. Intact eggs induced humoral response that was nominally twice stronger (95% CI 0.8-3.2) than that induced by normal saline but the effect did not reach statistical significance. CONCLUSIONS Soluble antigens are not abundant on the surface of S. mansoni eggs and/or are not secreted in sufficient quantities to induce a significant immune response to intact eggs. Assuming that isolation procedures had not damaged the eggs used for inoculation, our observations suggest that intact eggs either do not induce a significant immune response or, if they do, the mechanism involves insoluble antigens from the egg surface.
DOI: 10.6084/m9.figshare.5666872
title: Imposex in Stramonita haemastoma from coastal sites of Cartagena, Colombia

description: Abstract Imposex is the development of male sexual characteristics caused by the toxic effects of some chemicals that acts as an endocrinal disruptor. Antifouling paints contain these chemicals. Cartagena lacks studies to indicate the extent of imposex in its coastal waters. The aim of this study was to determine the prevalence of imposex in the gastropod Stramonita haemastoma in Cartagena, Colombia. Specimens were collected during 2013 from locations of high and low influence of port activity. Morphometric measurements and the frequency of the occurrence of imposex were registered. The comparison among morphometric variables showed statistically significant differences between the two sites studied. Furthermore, the females of the S. haemastoma species presented an imposex frequency of 93.1% in Birds’ Island, Cartagena Bay, compared to 31.8% in La Bocana. The relative penis size index or RPLI (10.145 and 3.231) and vas deferens sequence index or VDSI (2.83 and 1.16), showed possible contamination by organotin compounds in both places.
DOI: 10.6084/m9.figshare.5666872.v1
title: Imposex in Stramonita haemastoma from coastal sites of Cartagena, Colombia

description: Abstract Imposex is the development of male sexual characteristics caused by the toxic effects of some chemicals that acts as an endocrinal disruptor. Antifouling paints contain these chemicals. Cartagena lacks studies to indicate the extent of imposex in its coastal waters. The aim of this study was to determine the prevalence of imposex in the gastropod Stramonita haemastoma in Cartagena, Colombia. Specimens were collected during 2013 from locations of high and low influence of port activity. Morphometric measurements and the frequency of the occurrence of imposex were registered. The comparison among morphometric variables showed statistically significant differences between the two sites studied. Furthermore, the females of the S. haemastoma species presented an imposex frequency of 93.1% in Birds’ Island, Cartagena Bay, compared to 31.8% in La Bocana. The relative penis size index or RPLI (10.145 and 3.231) and vas deferens sequence index or VDSI (2.83 and 1.16), showed possible contamination by organotin compounds in both places.
DOI: 10.6084/m9.figshare.5666869
title: Textile effluent characterization and evaluation of capacity color removal using the fungus Lasiodiplodia theobromae MMPI

description: ABSTRACT The industrial processes of textile production are characterized by the use of large volumes of water during the washing steps and fabric dyeing, resulting in effluent with enormous diversity and chemical complexity. The presence of dissolved dyes is quite noticeable and problematic, considering their recalcitrance and slow degradation kinetic. In this work, the Lasiodiplodia theobromae MMPI fungus was evaluated for their ability to removing color from effluent. The assays were performed in a bench-scale bioreactor (5 L) with an incubation time of 192 hours. The decoloring efficiency ranged from 19.52% on 24h to 91,26% on 168 h and the mycelial biomass production ranged from 1.23 g.L-1 (24 h) to 7.60 g.L-1 (168 h). Production of exopolysaccharide (EPS) also was observed, with amounts ranged from 2.84 g.L-1 (24 h) to 4.28 g.L-1 (48 h). The characterization of the effluent showed some values of control parameters outside the discharge standards required by Brazilian law, with high Chemical Oxygen Demand (COD) (659 mg.L-1) and Biochemical Oxygen Demand (BOD5) (328 mg.L-1). The toxicity analysis using the microcrustacean Artemia salina, showed that the raw effluent concentration that caused 50% mortality of organisms (LC50) was approximately 14.72% (v/v) and at the end of treatment was 4.98% (v/v). Although the fungus was not efficient in biological detoxification of the effluent, it showed promising results for its color removal capacity, demonstrating potential for use in auxiliary treatment processes of textile effluents for the color removal.
DOI: 10.6084/m9.figshare.5666869.v1
title: Textile effluent characterization and evaluation of capacity color removal using the fungus Lasiodiplodia theobromae MMPI

description: ABSTRACT The industrial processes of textile production are characterized by the use of large volumes of water during the washing steps and fabric dyeing, resulting in effluent with enormous diversity and chemical complexity. The presence of dissolved dyes is quite noticeable and problematic, considering their recalcitrance and slow degradation kinetic. In this work, the Lasiodiplodia theobromae MMPI fungus was evaluated for their ability to removing color from effluent. The assays were performed in a bench-scale bioreactor (5 L) with an incubation time of 192 hours. The decoloring efficiency ranged from 19.52% on 24h to 91,26% on 168 h and the mycelial biomass production ranged from 1.23 g.L-1 (24 h) to 7.60 g.L-1 (168 h). Production of exopolysaccharide (EPS) also was observed, with amounts ranged from 2.84 g.L-1 (24 h) to 4.28 g.L-1 (48 h). The characterization of the effluent showed some values of control parameters outside the discharge standards required by Brazilian law, with high Chemical Oxygen Demand (COD) (659 mg.L-1) and Biochemical Oxygen Demand (BOD5) (328 mg.L-1). The toxicity analysis using the microcrustacean Artemia salina, showed that the raw effluent concentration that caused 50% mortality of organisms (LC50) was approximately 14.72% (v/v) and at the end of treatment was 4.98% (v/v). Although the fungus was not efficient in biological detoxification of the effluent, it showed promising results for its color removal capacity, demonstrating potential for use in auxiliary treatment processes of textile effluents for the color removal.
DOI: 10.6084/m9.figshare.5666863
title: SCREEN TIME, PERCEPTION OF SLEEP QUALITY AND EPISODES OF PARASOMNIA IN ADOLESCENTS

description: ABSTRACT Introduction: Sleep is an important component in the process of biological and mental development of children and adolescents, considered a source of revitalization of organic functions. Objective: To analyze the association between the screen type and time of exposure to the screen, the perception of sleep quality, and episodes of parasomnia in adolescents. Methods: A cross-sectional study that incorporates a school-based epidemiological survey with a representative sample (n=481) of high school students (14-19 years old) in the public education network of the city of Caruaru, PE. For the analysis of sleep and lifestyle, the translated and adapted version of the Global School-Based Student Health Survey (GSHS) was used. The binary logistic regression was used to analyze the association between the variables, considering the negative perception of sleep quality as an outcome. Results: The prevalence of negative perception of sleep quality was 58% (95% CI 53.5-62.3). Among the behaviors analyzed, it was found that sleeping eight hours or less per day and watching television more than two hours per day increased, respectively, 2.69 (95% CI 1.61-4.71) and 1.71 (95% CI 1.08-2.73) the chances of reporting negative perception of sleep. Excessive screen time, especially in front of TV, was associated with a greater number of episodes of parasomnia. Conclusion: Sleep quality is related both to the number of hours of sleep and to the time of exposure to TV. In addition, a greater number of episodes of parasomnia occurred among adolescents who watched more than three hours of TV per day.
DOI: 10.6084/m9.figshare.5666863.v1
title: SCREEN TIME, PERCEPTION OF SLEEP QUALITY AND EPISODES OF PARASOMNIA IN ADOLESCENTS

description: ABSTRACT Introduction: Sleep is an important component in the process of biological and mental development of children and adolescents, considered a source of revitalization of organic functions. Objective: To analyze the association between the screen type and time of exposure to the screen, the perception of sleep quality, and episodes of parasomnia in adolescents. Methods: A cross-sectional study that incorporates a school-based epidemiological survey with a representative sample (n=481) of high school students (14-19 years old) in the public education network of the city of Caruaru, PE. For the analysis of sleep and lifestyle, the translated and adapted version of the Global School-Based Student Health Survey (GSHS) was used. The binary logistic regression was used to analyze the association between the variables, considering the negative perception of sleep quality as an outcome. Results: The prevalence of negative perception of sleep quality was 58% (95% CI 53.5-62.3). Among the behaviors analyzed, it was found that sleeping eight hours or less per day and watching television more than two hours per day increased, respectively, 2.69 (95% CI 1.61-4.71) and 1.71 (95% CI 1.08-2.73) the chances of reporting negative perception of sleep. Excessive screen time, especially in front of TV, was associated with a greater number of episodes of parasomnia. Conclusion: Sleep quality is related both to the number of hours of sleep and to the time of exposure to TV. In addition, a greater number of episodes of parasomnia occurred among adolescents who watched more than three hours of TV per day.
DOI: 10.6084/m9.figshare.5666860
title: Effects of an accidental dry-season fire on the reproductive phenology of two Neotropical savanna shrubs

description: Abstract Fire is a recurrent disturbance in savanna vegetation and savanna species are adapted to it. Even so, fire may affect various aspects of plant ecology, including phenology. We studied the effects of a spatially heterogeneous fire on the reproductive phenology of two dominant woody plant species, Miconia albicans (Melastomataceae) and Schefflera vinosa (Araliaceae), in a savanna area in South-eastern Brazil. The study site was partially burnt by a dry-season accidental fire in August 2006, and we monitored the phenolology of 30 burnt and 30 unburnt individuals of each species between September 2007 and September 2008. We used restricted randomizations to assess phenological differences between the burnt and unburnt individuals. Fire had negative effects on the phenology of M. albicans, with a smaller production of reproductive structures in general and of floral buds, total fruits, and ripe fruits in burnt plants. All unburnt but only 16% of the burnt M. albicans plants produced ripe fruits during the study. Fire effects on S. vinosa were smaller, but there was a greater production of floral buds and fruits (but not ripe fruits) by burnt plants; approximately 90% of the individuals of S. vinosa produced ripe fruits during the study, regardless of having been burnt or not. The differences between the two species may be related to S. vinosa’s faster growth and absence from the seed bank at the study site, whereas M. albicans grows more slowly and is dominant in the seed bank.
DOI: 10.6084/m9.figshare.5666860.v1
title: Effects of an accidental dry-season fire on the reproductive phenology of two Neotropical savanna shrubs

description: Abstract Fire is a recurrent disturbance in savanna vegetation and savanna species are adapted to it. Even so, fire may affect various aspects of plant ecology, including phenology. We studied the effects of a spatially heterogeneous fire on the reproductive phenology of two dominant woody plant species, Miconia albicans (Melastomataceae) and Schefflera vinosa (Araliaceae), in a savanna area in South-eastern Brazil. The study site was partially burnt by a dry-season accidental fire in August 2006, and we monitored the phenolology of 30 burnt and 30 unburnt individuals of each species between September 2007 and September 2008. We used restricted randomizations to assess phenological differences between the burnt and unburnt individuals. Fire had negative effects on the phenology of M. albicans, with a smaller production of reproductive structures in general and of floral buds, total fruits, and ripe fruits in burnt plants. All unburnt but only 16% of the burnt M. albicans plants produced ripe fruits during the study. Fire effects on S. vinosa were smaller, but there was a greater production of floral buds and fruits (but not ripe fruits) by burnt plants; approximately 90% of the individuals of S. vinosa produced ripe fruits during the study, regardless of having been burnt or not. The differences between the two species may be related to S. vinosa’s faster growth and absence from the seed bank at the study site, whereas M. albicans grows more slowly and is dominant in the seed bank.