cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.23243698.v1
title: Shareholder coalitions and dividends: evidence from the Brazilian capital market

description: ABSTRACT This article examines the effect of the heterogeneity of shareholder coalitions on the distribution of dividends in companies listed in Brazil. To analyze the relationship between large shareholders and dividends, it is essential to consider the way the control is ensured. Large shareholders can share control by forming coalitions, and differences in the composition of coalitions can alter the incentives the cooperating parties have for the activity of monitoring. Based on shareholder agreements, we explore the heterogeneity among shareholder coalitions by presenting elements that can characterize the role of shared control in the corporate governance of companies in a market environment described by the concentration of control in a single large shareholder. This study presents potential economic and social impacts, as it is of particular interest to outsider shareholders, and even potential investors, to know how insiders can use dividend policy, since the distribution of profits tends to mitigate agency problems. To identify the shareholder coalitions we resorted to shareholder agreements. The analysis model was estimated using the two-stage system generalized method of moments (GMM-Sys) with unbalanced panel data for the period from 2008 to 2019. We discovered that the number of shareholders in the coalition and the leveraging of the voting rights of the biggest shareholder in the coalition are negatively related to the dividends distributed, and that the voting rights of the coalition are positively related to the dividends distributed. These results contribute to the principal-principal approach of agency theory and highlight that the incentives and capacity of shareholder coalitions to pursue private benefits of control depend on their own characteristics.
DOI: 10.6084/m9.figshare.23243700
title: Assessing the fourth wave of the populist radical right: Jair Bolsonaro’s voters in comparative perspective

description: This article analyzes the individual factors that help explain the electoral support for Jair Bolsonaro in the 2018 Presidential elections in Brazil in light of the findings for the Populist Radical Right (PRR) in Western Europe. The present article contributes to the comparative literature on the determinants of the vote for the PRR in a non-European country. Analyzing the rise of the PRR in Latin America is particularly relevant since structural constraints limit its chances. To carry out our analysis, we rely on survey data from the Brazilian Electoral Study (BES). Beyond some specificities due to differences in the articulation of the PRR's main ideologies, we found that while certain determinants of the vote for the PRR in Brazil are in line with the hypothesis based on the European experience, others respond to country and region-level indicators like negative identity toward the PT.
DOI: 10.6084/m9.figshare.23243700.v1
title: Assessing the fourth wave of the populist radical right: Jair Bolsonaro’s voters in comparative perspective

description: This article analyzes the individual factors that help explain the electoral support for Jair Bolsonaro in the 2018 Presidential elections in Brazil in light of the findings for the Populist Radical Right (PRR) in Western Europe. The present article contributes to the comparative literature on the determinants of the vote for the PRR in a non-European country. Analyzing the rise of the PRR in Latin America is particularly relevant since structural constraints limit its chances. To carry out our analysis, we rely on survey data from the Brazilian Electoral Study (BES). Beyond some specificities due to differences in the articulation of the PRR's main ideologies, we found that while certain determinants of the vote for the PRR in Brazil are in line with the hypothesis based on the European experience, others respond to country and region-level indicators like negative identity toward the PT.
DOI: 10.6084/m9.figshare.23243703
title: Synthesis and Characterization of Au@MnO2 Nanoparticles as Plasmon Enhanced Spectroscopy Substrates

description: The plasmonic properties of Au nanoparticles (AuNP), which allow the observation of enhanced spectroscopic effects, are strongly affected by the aggregation and precipitation caused by the strong interactions between nanoparticles. To avoid AuNP aggregation and precipitation, the present study proposes coating with MnO2, forming AuNP@MnO2 core-shell structures. The MnO2 layers presented 1-10 nm thickness so that highly surface-enhanced fluorescence was obtained with maximum intensity given by 5 nm thick MnO2. The decrease in Raman intensity could be controlled, despite the inherent reduction in surface-enhanced Raman scattering (SERS) intensity with increasing adsorbate-surface distance. The decrease in Raman intensity was compensated by increasing AuNP stability caused by the MnO2 shell.
DOI: 10.6084/m9.figshare.23243703.v1
title: Synthesis and Characterization of Au@MnO2 Nanoparticles as Plasmon Enhanced Spectroscopy Substrates

description: The plasmonic properties of Au nanoparticles (AuNP), which allow the observation of enhanced spectroscopic effects, are strongly affected by the aggregation and precipitation caused by the strong interactions between nanoparticles. To avoid AuNP aggregation and precipitation, the present study proposes coating with MnO2, forming AuNP@MnO2 core-shell structures. The MnO2 layers presented 1-10 nm thickness so that highly surface-enhanced fluorescence was obtained with maximum intensity given by 5 nm thick MnO2. The decrease in Raman intensity could be controlled, despite the inherent reduction in surface-enhanced Raman scattering (SERS) intensity with increasing adsorbate-surface distance. The decrease in Raman intensity was compensated by increasing AuNP stability caused by the MnO2 shell.
DOI: 10.6084/m9.figshare.23243706
title: Process optimization of physicochemical properties of spray-dried Hydrocotyle umbellata L. extract

description: Abstract Hydrocotyle umbellata L., Araliaceae, is a species that is recommended in Ayurvedic medicine for its effects on the central nervous system, such as anxiolytic and memory-stimulant effects. Despite the medicinal potential of this species, its phytopharmaceutical and technological potential to produce standardized extracts has not been investigated. This study analyzes the influence of spray drying parameters on the contents of the chemical markers (total phenolic, total flavonoid, and hibalactone) and the functional properties of H. umbellata extract. The optimization of drying conditions was performed using a central composite design combined with response surface methodology and desirability function approach. The mathematical models fitted to experimental data indicated that all the evaluated drying parameters significantly influenced the chemical contents. The optimal conditions were: inlet temperature of 120 °C, feed flow rate of 4 mL min-1, and colloidal silicon dioxide:maltodextrin ratio of 16%:4%. Under these conditions, the powder samples had spherical particles and desirable physicochemical and functional properties, such as low water activity and moisture content, good product recovery, reconstitution, and flowability. Thus, spray drying might be a promising technique for processing standardized H. umbellata extracts.
DOI: 10.6084/m9.figshare.23243706.v1
title: Process optimization of physicochemical properties of spray-dried Hydrocotyle umbellata L. extract

description: Abstract Hydrocotyle umbellata L., Araliaceae, is a species that is recommended in Ayurvedic medicine for its effects on the central nervous system, such as anxiolytic and memory-stimulant effects. Despite the medicinal potential of this species, its phytopharmaceutical and technological potential to produce standardized extracts has not been investigated. This study analyzes the influence of spray drying parameters on the contents of the chemical markers (total phenolic, total flavonoid, and hibalactone) and the functional properties of H. umbellata extract. The optimization of drying conditions was performed using a central composite design combined with response surface methodology and desirability function approach. The mathematical models fitted to experimental data indicated that all the evaluated drying parameters significantly influenced the chemical contents. The optimal conditions were: inlet temperature of 120 °C, feed flow rate of 4 mL min-1, and colloidal silicon dioxide:maltodextrin ratio of 16%:4%. Under these conditions, the powder samples had spherical particles and desirable physicochemical and functional properties, such as low water activity and moisture content, good product recovery, reconstitution, and flowability. Thus, spray drying might be a promising technique for processing standardized H. umbellata extracts.
DOI: 10.6084/m9.figshare.23243709
title: Multidimensional performance assessment of a sample of beef cattle ranches in the Pantanal from a data envelopment analysis perspective

description: ABSTRACT: Beef cattle ranching is the main economic activity in the Brazilian Pantanal, undertaken in an extensive manner, mostly in natural environments and dynamic in space and time. The ongoing monitoring, assessment, and performance improvement are key aspects of the search for sustainable use of natural resources in beef cattle ranches, as these ranches are the management units in the Pantanal. In this paper we proposed a data envelopment analysis (DEA) approach to assess the performance of fourteen beef cattle ranches in the Pantanal wetland as a case study, considering financial, productive, and environmental sustainability dimensions. We modeled each dimension separately and calculated an overall performance score. We also fit fractional regression models to study the influence of potential covariates on the performance scores. The methodological approach proposed here proved to be adequate for the case study, as the results are in line with the expectations of decision-makers regarding the performance of the ranches. The overall performance analysis was influenced by the proportion of higher quality native forage resources, which depends on the dynamics and on the spatial-temporal variation of the landscapes. Therefore, overall performance requires adaptive management of ranches based on diversity conservation, which benefits the multifunctionality of products and services.
DOI: 10.6084/m9.figshare.23243709.v1
title: Multidimensional performance assessment of a sample of beef cattle ranches in the Pantanal from a data envelopment analysis perspective

description: ABSTRACT: Beef cattle ranching is the main economic activity in the Brazilian Pantanal, undertaken in an extensive manner, mostly in natural environments and dynamic in space and time. The ongoing monitoring, assessment, and performance improvement are key aspects of the search for sustainable use of natural resources in beef cattle ranches, as these ranches are the management units in the Pantanal. In this paper we proposed a data envelopment analysis (DEA) approach to assess the performance of fourteen beef cattle ranches in the Pantanal wetland as a case study, considering financial, productive, and environmental sustainability dimensions. We modeled each dimension separately and calculated an overall performance score. We also fit fractional regression models to study the influence of potential covariates on the performance scores. The methodological approach proposed here proved to be adequate for the case study, as the results are in line with the expectations of decision-makers regarding the performance of the ranches. The overall performance analysis was influenced by the proportion of higher quality native forage resources, which depends on the dynamics and on the spatial-temporal variation of the landscapes. Therefore, overall performance requires adaptive management of ranches based on diversity conservation, which benefits the multifunctionality of products and services.
DOI: 10.6084/m9.figshare.22776551.v1
title: Light-driven flow synthesis of acetic acid from methane with chemical looping

description: source data
DOI: 10.6084/m9.figshare.22776551
title: Light-driven flow synthesis of acetic acid from methane with chemical looping

description: source data
DOI: 10.6084/m9.figshare.22722937.v1
title: Electrosynthesis of a nylon-6 precursor from cyclohexanone and nitrite under ambient conditions

description: Source data for figures
DOI: 10.6084/m9.figshare.22722937
title: Electrosynthesis of a nylon-6 precursor from cyclohexanone and nitrite under ambient conditions

description: Source data for figures
DOI: 10.6084/m9.figshare.23243712
title: A One-Pot Domino Synthesis of 4-(Trifluoromethyl)-2-thiazolamine

description: Triclosan (5-chloro-2-(2,4-dichlorophenoxy)phenol) is commonly used as an antibacterial agent in various industrial products and is often detected in wastewater effluent. Comparison was made for triclosan degradation by photolysis and TiO2 photocatalysis (under UV irradiation (125 W)) based on analysis of transformation products, together with ecotoxicity evaluation. The morphology of the TiO2 was characterized by X-ray diffractometry (XRD) and field emission gun-scanning electron microscopy (FEG-SEM). Triclosan quantitation was performed by high performance liquid chromatography (HPLC). The optimal condition was obtained using a response surface model and desirability profile. The initial concentration of triclosan used in all the experiments was 10 mg L-1 to achieve comprehensive identification of transformation products. The optimal experimental condition was 30 mg L-1 TiO2 at pH 10. The photocatalytic system achieved &gt; 99% triclosan degradation at 30 min of reaction. The mineralization rates by photolysis and photocatalysis were 25 and 90%, respectively. A total of 27 transformation products were identified using liquid chromatography quadrupole time of flight mass spectrometry (QTOF MS), being that 25 were new structures, not previously reported in the literature. Ecotoxicity assays demonstrated that triclosan and some of the major transformation products did not cause deleterious effects towards Lactuca sativa and Daphnia magna after 16 h of treatment.
DOI: 10.6084/m9.figshare.23243712.v1
title: A One-Pot Domino Synthesis of 4-(Trifluoromethyl)-2-thiazolamine

description: Triclosan (5-chloro-2-(2,4-dichlorophenoxy)phenol) is commonly used as an antibacterial agent in various industrial products and is often detected in wastewater effluent. Comparison was made for triclosan degradation by photolysis and TiO2 photocatalysis (under UV irradiation (125 W)) based on analysis of transformation products, together with ecotoxicity evaluation. The morphology of the TiO2 was characterized by X-ray diffractometry (XRD) and field emission gun-scanning electron microscopy (FEG-SEM). Triclosan quantitation was performed by high performance liquid chromatography (HPLC). The optimal condition was obtained using a response surface model and desirability profile. The initial concentration of triclosan used in all the experiments was 10 mg L-1 to achieve comprehensive identification of transformation products. The optimal experimental condition was 30 mg L-1 TiO2 at pH 10. The photocatalytic system achieved &gt; 99% triclosan degradation at 30 min of reaction. The mineralization rates by photolysis and photocatalysis were 25 and 90%, respectively. A total of 27 transformation products were identified using liquid chromatography quadrupole time of flight mass spectrometry (QTOF MS), being that 25 were new structures, not previously reported in the literature. Ecotoxicity assays demonstrated that triclosan and some of the major transformation products did not cause deleterious effects towards Lactuca sativa and Daphnia magna after 16 h of treatment.
DOI: 10.6084/m9.figshare.23243715
title: Resume the investment capacity of the economy to guarantee the development

description: Abstract The gradual opening of the Brazilian economy with the consequent greater exposure to the international market, the review of the role of the State, as well as the deregulation process require a new stance in face of these aspects. The need to provide the minimum conditions necessary for the recovery of investments in the Brazilian economy is crucial in a scenario of modernization and competitiveness. This requires the combination of macroeconomic policies that encourage this process as well as the individual action of the agents in the sense of seeking to improve the standard of quality and productivity.
DOI: 10.6084/m9.figshare.23243715.v1
title: Resume the investment capacity of the economy to guarantee the development

description: Abstract The gradual opening of the Brazilian economy with the consequent greater exposure to the international market, the review of the role of the State, as well as the deregulation process require a new stance in face of these aspects. The need to provide the minimum conditions necessary for the recovery of investments in the Brazilian economy is crucial in a scenario of modernization and competitiveness. This requires the combination of macroeconomic policies that encourage this process as well as the individual action of the agents in the sense of seeking to improve the standard of quality and productivity.
DOI: 10.6084/m9.figshare.23243710
title: Municipal elections 2016 and 2020 in São Paulo: different results, same alignments

description: Abstract The 2016 and 2020 municipal elections in São Paulo’s city presented results that deviated from previous ones in the spatial voting patterns and in candidate performance. While the PT in 2016 did not win in any district, with part of these votes "stolen" by Marta Suplicy (PMDB), in 2020 the party, for the first time since 1985, was not among the first place contenders, a position occupied by the PSOL. Through mapping and factor analysis, the present article provides evidence for this deviation and seeks possible explanations by analyzing, through ecological inference, the transfer of votes from one election to another among candidates. The article defends the hypothesis that this transfer is due more to a strategic vote than to electoral realignments. The results show that there was no change in "voter alignment" and the deviations found attributed to the competition strategies adopted by the parties.
DOI: 10.6084/m9.figshare.23243710.v1
title: Municipal elections 2016 and 2020 in São Paulo: different results, same alignments

description: Abstract The 2016 and 2020 municipal elections in São Paulo’s city presented results that deviated from previous ones in the spatial voting patterns and in candidate performance. While the PT in 2016 did not win in any district, with part of these votes "stolen" by Marta Suplicy (PMDB), in 2020 the party, for the first time since 1985, was not among the first place contenders, a position occupied by the PSOL. Through mapping and factor analysis, the present article provides evidence for this deviation and seeks possible explanations by analyzing, through ecological inference, the transfer of votes from one election to another among candidates. The article defends the hypothesis that this transfer is due more to a strategic vote than to electoral realignments. The results show that there was no change in "voter alignment" and the deviations found attributed to the competition strategies adopted by the parties.
DOI: 10.6084/m9.figshare.23243718
title: Final irrigation protocols can be used to promote stable long-term bond strength of AH Plus to dentin

description: Abstract Irrigation solutions might affect dentin surface characteristics and, consequently, endodontic sealers adhesion. Objective This study analyzed the effect of different final irrigation protocols on push-out bond strength (BS) of AH Plus to dentin seven days and 20 months after obturation. Scanning electron micrographs were obtained from the dentin surface of one sample/group after final irrigation. Methodology Canals of bovine incisors were instrumented and received final irrigation with (n=21): G1 – 2.5% sodium hypochlorite (NaOCl) + distilled water; G2 – 2.5% NaOCl + 17% EDTA; G3 – 2.5% NaOCl + 17% EDTA + 2.5% NaOCl; G4 – 2.5% NaOCl + 17% EDTA + 2% chlorhexidine (CHX); G5 – mixture 5% NaOCl + 18% etidronate (HEDP); and G6 – mixture 5% NaOCl + 10% tetrasodium EDTA (Na4EDTA). After irrigation, one root/group was split and images were obtained by scanning electron microscopy (SEM). The other 20 roots/group were filled with only AH Plus sealer. Three slices/root were used for push-out assessment seven days and 20 months after obturation. One-way analysis of variance and Tukey (α&lt;0.05) were used to compare the results among experimental groups, and unpaired t-test (α&lt;0.05) was used to compare the results of the same group over time. Results The photomicrographs showed that, excepting G1, all groups completely removed the smear layer from the samples. In G2 and G4, the opening of the dentin tubules enlarged. In G3, erosion was observed in the peritubular and intertubular dentin. Values of the BS in the seven days were G2=G3=G4=G5&gt;G6=G1 and in the 20 months were G3=G5&gt;G6=G4&gt;G1=G2. G3, G5, and G6 presented values of BS in 20 months similar to the values of seven days (P&gt;0.05). Conclusions The final irrigation protocols tested produced dentin surfaces with different characteristics. Only G3 and G5 presented high BS values that were stable over time.
DOI: 10.6084/m9.figshare.23243718.v1
title: Final irrigation protocols can be used to promote stable long-term bond strength of AH Plus to dentin

description: Abstract Irrigation solutions might affect dentin surface characteristics and, consequently, endodontic sealers adhesion. Objective This study analyzed the effect of different final irrigation protocols on push-out bond strength (BS) of AH Plus to dentin seven days and 20 months after obturation. Scanning electron micrographs were obtained from the dentin surface of one sample/group after final irrigation. Methodology Canals of bovine incisors were instrumented and received final irrigation with (n=21): G1 – 2.5% sodium hypochlorite (NaOCl) + distilled water; G2 – 2.5% NaOCl + 17% EDTA; G3 – 2.5% NaOCl + 17% EDTA + 2.5% NaOCl; G4 – 2.5% NaOCl + 17% EDTA + 2% chlorhexidine (CHX); G5 – mixture 5% NaOCl + 18% etidronate (HEDP); and G6 – mixture 5% NaOCl + 10% tetrasodium EDTA (Na4EDTA). After irrigation, one root/group was split and images were obtained by scanning electron microscopy (SEM). The other 20 roots/group were filled with only AH Plus sealer. Three slices/root were used for push-out assessment seven days and 20 months after obturation. One-way analysis of variance and Tukey (α&lt;0.05) were used to compare the results among experimental groups, and unpaired t-test (α&lt;0.05) was used to compare the results of the same group over time. Results The photomicrographs showed that, excepting G1, all groups completely removed the smear layer from the samples. In G2 and G4, the opening of the dentin tubules enlarged. In G3, erosion was observed in the peritubular and intertubular dentin. Values of the BS in the seven days were G2=G3=G4=G5&gt;G6=G1 and in the 20 months were G3=G5&gt;G6=G4&gt;G1=G2. G3, G5, and G6 presented values of BS in 20 months similar to the values of seven days (P&gt;0.05). Conclusions The final irrigation protocols tested produced dentin surfaces with different characteristics. Only G3 and G5 presented high BS values that were stable over time.