cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.22308798
title: The Effects of Sovereign Rating and Corporate Governance on The Capital Structure of Latin American Companies

description: ABSTRACT This study analyzed the effects of sovereign rating and corporate governance (CG) on the capital structure of Latin American companies. A multilevel regression model was used for 823 companies listed on major Latin American stock exchanges over the period 2004-2018. The results showed that firm level is the most responsible factor for the variation in companies’ capital structure, while country level had the greatest influence on the variation in long-term debt. In the absence of CG mechanisms, sovereign rating is one of the factors not controlled by managers that can explain the capital structure of Latin American companies, which reduce their debt levels to protect themselves in the face of their countries’ sovereign rating variations. The results indicated that, despite having an audit committee and keeping independent members on the committee, firms choose to reduce their debt levels to protect themselves against the constant variations of their countries’ sovereign rating. The results also showed that CG mechanisms do not act in isolation when it comes to reducing agency problems. This research is one of the first studies to provide evidence on the implications of sovereign ratings and CG on the capital structure of firms in Latin America.
DOI: 10.6084/m9.figshare.22308798.v1
title: The Effects of Sovereign Rating and Corporate Governance on The Capital Structure of Latin American Companies

description: ABSTRACT This study analyzed the effects of sovereign rating and corporate governance (CG) on the capital structure of Latin American companies. A multilevel regression model was used for 823 companies listed on major Latin American stock exchanges over the period 2004-2018. The results showed that firm level is the most responsible factor for the variation in companies’ capital structure, while country level had the greatest influence on the variation in long-term debt. In the absence of CG mechanisms, sovereign rating is one of the factors not controlled by managers that can explain the capital structure of Latin American companies, which reduce their debt levels to protect themselves in the face of their countries’ sovereign rating variations. The results indicated that, despite having an audit committee and keeping independent members on the committee, firms choose to reduce their debt levels to protect themselves against the constant variations of their countries’ sovereign rating. The results also showed that CG mechanisms do not act in isolation when it comes to reducing agency problems. This research is one of the first studies to provide evidence on the implications of sovereign ratings and CG on the capital structure of firms in Latin America.
DOI: 10.5281/zenodo.7752166
title: Result for setting time

description: Result for setting time
DOI: 10.5281/zenodo.7752165
title: Result for setting time

description: Result for setting time
DOI: 10.6084/m9.figshare.22308804
title: Intake, digestibility, and ingestive behavior of sheep fed with thornless Mandacaru, cactus pear genotypes Orelha de Elefante Mexicana and Miúda

description: ABSTRACT. This study aimed to evaluate the intake, digestibility, and ingestive behavior of sheep fed with different species of forage cacti. Fifteen sheep (17.27kg ± 1 kg) were distributed in a completely randomized experimental design with three treatments and five replicates. The treatments were diets on a dry matter basis composed of 430.9 g kg-1 of thornless Mandacaru cactus (Cereus hildmannianus), 525.7 g kg-1 of cactus pear cv. Orelha de Elefante Mexicana (Opuntia stricta) and 492.1 g kg-1 of cactus pear cv. Miúda (Nopalea cochenillifera) in addition to Sabiá hay (Mimosa caesalpiniaefolia) (194.7 to 233.8 g kg-1), plus concentrate feed. The intake of the dry matter, organic matter, ether extract, neutral detergent fiber, total carbohydrates, non-fiber carbohydrates, total digestible nutrients and voluntary water intake in g day-1 was not differ (p &gt; 0.05) by experimental diets. There were no differences (p &gt; 0.05) in digestibility coefficients of the dry matter, organic matter, neutral detergent fiber, total carbohydrates, non-fiber carbohydrates, and total digestible nutrients between the experimental diets. The feeding times differed (p &lt; 0.05) between diets, with a higher value for the Opuntia diet, while the rumination times, feeding efficiency, and rumination efficiency did not differ (p &gt; 0.05). The cactus Cereus and Opuntia and Nopalea have similar nutritional value in sheep’s diet.
DOI: 10.6084/m9.figshare.22308804.v1
title: Intake, digestibility, and ingestive behavior of sheep fed with thornless Mandacaru, cactus pear genotypes Orelha de Elefante Mexicana and Miúda

description: ABSTRACT. This study aimed to evaluate the intake, digestibility, and ingestive behavior of sheep fed with different species of forage cacti. Fifteen sheep (17.27kg ± 1 kg) were distributed in a completely randomized experimental design with three treatments and five replicates. The treatments were diets on a dry matter basis composed of 430.9 g kg-1 of thornless Mandacaru cactus (Cereus hildmannianus), 525.7 g kg-1 of cactus pear cv. Orelha de Elefante Mexicana (Opuntia stricta) and 492.1 g kg-1 of cactus pear cv. Miúda (Nopalea cochenillifera) in addition to Sabiá hay (Mimosa caesalpiniaefolia) (194.7 to 233.8 g kg-1), plus concentrate feed. The intake of the dry matter, organic matter, ether extract, neutral detergent fiber, total carbohydrates, non-fiber carbohydrates, total digestible nutrients and voluntary water intake in g day-1 was not differ (p &gt; 0.05) by experimental diets. There were no differences (p &gt; 0.05) in digestibility coefficients of the dry matter, organic matter, neutral detergent fiber, total carbohydrates, non-fiber carbohydrates, and total digestible nutrients between the experimental diets. The feeding times differed (p &lt; 0.05) between diets, with a higher value for the Opuntia diet, while the rumination times, feeding efficiency, and rumination efficiency did not differ (p &gt; 0.05). The cactus Cereus and Opuntia and Nopalea have similar nutritional value in sheep’s diet.
DOI: 10.6084/m9.figshare.22308805
title: Cultivation protocol using a coir-based substrate modulates the concentration of bioactive compounds and the antioxidant activity of Passiflora alata Curtis seedlings

description: ABSTRACT The use of coconut coir dust is a low-cost cultivation practice. Thus, this study aimed to determine the effect of coconut coir dust proportion on foliar secondary metabolite biosynthesis and growth of Passiflora alata Curtis (sweet passion fruit). This Passiflora species possess pharmaceutical relevance and the use of organic-based substrates may promote the production of bioactive compounds in the phytomass. An experiment in a greenhouse was set up with three proportions of coir dust mixed with a commercial substrate for seedlings (CSS) (peat-based) (S1= 1:1:1, CSS: sand: coconut coir dust; S2= 1.5:1.5:1, CSS: sand: coconut coir dust and S3= 1:1, sand: CSS) in seven replicates. After 68 days, growth parameters were measured (height, leaf area, number of leaves, stem diameter, and dry matter), and the harvested leaves were used to prepare ethanolic extracts. The total antioxidant activity and production of phenolics, flavonoids, proanthocyanidins, and saponins were assessed. Unexpectedly, the coir dust supply did not favor the growth and production of secondary metabolites, as the best results were observed in plants grown in S3. Moreover, S3 is efficient in optimizing the growth, metabolite content, and antioxidant capacity of P. alata foliar extracts dispensing coir dust supplementation in the substrate. Therefore, adding coir to CSS is not recommended to enhance the production of secondary metabolites and the growth of P. alata seedlings.
DOI: 10.6084/m9.figshare.22308805.v1
title: Cultivation protocol using a coir-based substrate modulates the concentration of bioactive compounds and the antioxidant activity of Passiflora alata Curtis seedlings

description: ABSTRACT The use of coconut coir dust is a low-cost cultivation practice. Thus, this study aimed to determine the effect of coconut coir dust proportion on foliar secondary metabolite biosynthesis and growth of Passiflora alata Curtis (sweet passion fruit). This Passiflora species possess pharmaceutical relevance and the use of organic-based substrates may promote the production of bioactive compounds in the phytomass. An experiment in a greenhouse was set up with three proportions of coir dust mixed with a commercial substrate for seedlings (CSS) (peat-based) (S1= 1:1:1, CSS: sand: coconut coir dust; S2= 1.5:1.5:1, CSS: sand: coconut coir dust and S3= 1:1, sand: CSS) in seven replicates. After 68 days, growth parameters were measured (height, leaf area, number of leaves, stem diameter, and dry matter), and the harvested leaves were used to prepare ethanolic extracts. The total antioxidant activity and production of phenolics, flavonoids, proanthocyanidins, and saponins were assessed. Unexpectedly, the coir dust supply did not favor the growth and production of secondary metabolites, as the best results were observed in plants grown in S3. Moreover, S3 is efficient in optimizing the growth, metabolite content, and antioxidant capacity of P. alata foliar extracts dispensing coir dust supplementation in the substrate. Therefore, adding coir to CSS is not recommended to enhance the production of secondary metabolites and the growth of P. alata seedlings.
DOI: 10.6084/m9.figshare.22308813
title: Replacing corn silage with extruded forage in sheep feeding

description: ABSTRACT. The objective was to evaluate levels of replacement of corn silage with extruded forage (Foragge®) in sheep feeding. Twenty adult Santa Inês ewes in maintenance, and 55.8 kg average weight were housed in metabolic cages, and the treatments consisted of 20, 40, 60 and 80% replacement of corn silage with Foragge® extruded forage with 60% Uruchloa brizantha in the diet. The design was completely randomized, with regression analysis and non-parametric analysis at 5% probability. The supply of up to 80% extruded roughage to replace corn silage increased dry matter intake and digestibility, and fecal output in dry matter (p &lt; 0.05). Also, it increased the efficiency of ingestion, rumination and chewing activities of sheep, but did not alter urinary parameters and energy metabolites (p &gt; 0.05). However, it reduced the concentration of uric acid (p &lt; 0.05). Foragge® extruded roughage can replace corn silage by up to 80% with changes in intake, digestibility, fecal parameters, ingestive behavior and concentration of uric acid and urea, with no modifications in urinary parameters and energy metabolites.
DOI: 10.6084/m9.figshare.22308813.v1
title: Replacing corn silage with extruded forage in sheep feeding

description: ABSTRACT. The objective was to evaluate levels of replacement of corn silage with extruded forage (Foragge®) in sheep feeding. Twenty adult Santa Inês ewes in maintenance, and 55.8 kg average weight were housed in metabolic cages, and the treatments consisted of 20, 40, 60 and 80% replacement of corn silage with Foragge® extruded forage with 60% Uruchloa brizantha in the diet. The design was completely randomized, with regression analysis and non-parametric analysis at 5% probability. The supply of up to 80% extruded roughage to replace corn silage increased dry matter intake and digestibility, and fecal output in dry matter (p &lt; 0.05). Also, it increased the efficiency of ingestion, rumination and chewing activities of sheep, but did not alter urinary parameters and energy metabolites (p &gt; 0.05). However, it reduced the concentration of uric acid (p &lt; 0.05). Foragge® extruded roughage can replace corn silage by up to 80% with changes in intake, digestibility, fecal parameters, ingestive behavior and concentration of uric acid and urea, with no modifications in urinary parameters and energy metabolites.
DOI: 10.6084/m9.figshare.22308814
title: META-RESEARCH: THE IMPLEMENTATION OF EDUCATIONAL PUBLIC POLICIES IN THE FIELD OF EDUCATION

description: ABSTRACT: This paper aims to analyze the theoretical references and analytical concepts (called descriptors) mobilized by studies on implementing public policies in the field of education. Considering that academic production on the theme of implementation in the Education field is scarce, we conducted a meta-research based on the definition of some descriptors and theoretical references from the Political Science field. We tried to verify, surveying the academic production in the Education field — theses, dissertations, and articles — which was the presence and how these references were mobilized. The time frame was limited to the years 2018 and 2019, and, in total, we identified 10 articles and 25 theses and dissertations. The analysis and categorization of this material, identifying the theoretical-conceptual referential used, indicated that among the selected theses and dissertations, there is a higher concentration of studies on implementing agents and, among the articles, a higher concentration of studies on governance structures. From the results, we consider that there is, among researchers in the educational area, an approach “under construction” to the specific literature of the Political Science field on implementation.
DOI: 10.6084/m9.figshare.22308814.v1
title: META-RESEARCH: THE IMPLEMENTATION OF EDUCATIONAL PUBLIC POLICIES IN THE FIELD OF EDUCATION

description: ABSTRACT: This paper aims to analyze the theoretical references and analytical concepts (called descriptors) mobilized by studies on implementing public policies in the field of education. Considering that academic production on the theme of implementation in the Education field is scarce, we conducted a meta-research based on the definition of some descriptors and theoretical references from the Political Science field. We tried to verify, surveying the academic production in the Education field — theses, dissertations, and articles — which was the presence and how these references were mobilized. The time frame was limited to the years 2018 and 2019, and, in total, we identified 10 articles and 25 theses and dissertations. The analysis and categorization of this material, identifying the theoretical-conceptual referential used, indicated that among the selected theses and dissertations, there is a higher concentration of studies on implementing agents and, among the articles, a higher concentration of studies on governance structures. From the results, we consider that there is, among researchers in the educational area, an approach “under construction” to the specific literature of the Political Science field on implementation.
DOI: 10.6084/m9.figshare.22308816
title: Diagnostic radiology training for medical students - a Brazilian multicenter survey

description: ABSTRACT Objective This study aimed to assess diagnostic radiology training and exposure during medical school, from the perspective of medical students in Brazil. Methods In this multicenter study approved by the Institutional Review Board, medical students from multiple universities in Brazil filled out an online questionnaire regarding their perception about diagnostic radiology training during medical school, including knowledge and use of the American College of Radiology Appropriateness Criteria and their confidence level in interpreting common radiological findings. Medical students from different regions of Brazil were sent invitations to participate in the anonymous survey through radiology group emails initiated by radiology professors and a group of ambassadors representing different institutions. Informed consent was obtained electronically at the beginning of the survey. Results The survey demonstrated diagnostic radiology is frequently included in preclinical exams; however, radiology training during medical school was considered inadequate from the medical students´ perspective. Overall, radiological imaging teaching was provided by radiologists for more than half of the survey respondents; however, radiological imaging is frequently shown to students by non-radiologist physicians during case discussion rounds. Moreover, few respondents had a mandatory radiology training rotation during medical school. Conclusion This Brazilian medical student survey demonstrated that from the medical students’ perspective, diagnostic radiology is an important subject in clinical practice; however, their radiology training and exposure are overall heterogeneous.
DOI: 10.6084/m9.figshare.22308816.v1
title: Diagnostic radiology training for medical students - a Brazilian multicenter survey

description: ABSTRACT Objective This study aimed to assess diagnostic radiology training and exposure during medical school, from the perspective of medical students in Brazil. Methods In this multicenter study approved by the Institutional Review Board, medical students from multiple universities in Brazil filled out an online questionnaire regarding their perception about diagnostic radiology training during medical school, including knowledge and use of the American College of Radiology Appropriateness Criteria and their confidence level in interpreting common radiological findings. Medical students from different regions of Brazil were sent invitations to participate in the anonymous survey through radiology group emails initiated by radiology professors and a group of ambassadors representing different institutions. Informed consent was obtained electronically at the beginning of the survey. Results The survey demonstrated diagnostic radiology is frequently included in preclinical exams; however, radiology training during medical school was considered inadequate from the medical students´ perspective. Overall, radiological imaging teaching was provided by radiologists for more than half of the survey respondents; however, radiological imaging is frequently shown to students by non-radiologist physicians during case discussion rounds. Moreover, few respondents had a mandatory radiology training rotation during medical school. Conclusion This Brazilian medical student survey demonstrated that from the medical students’ perspective, diagnostic radiology is an important subject in clinical practice; however, their radiology training and exposure are overall heterogeneous.
DOI: 10.6084/m9.figshare.22308820
title: Impact of gut-peripheral nervous system axis on the development of diabetic neuropathy

description: Diabetes is a chronic metabolic disease caused by a reduction in the production and/or action of insulin, with consequent development of hyperglycemia. Diabetic patients, especially those who develop neuropathy, presented dysbiosis, with an increase in the proportion of pathogenic bacteria and a decrease in the butyrate-producing bacteria. Due to this dysbiosis, diabetic patients presented a weakness of the intestinal permeability barrier and high bacterial product translocation to the bloodstream, in parallel to a high circulating levels of pro-inflammatory cytokines such as TNF-α. In this context, we propose here that dysbiosis-induced increased systemic levels of bacterial products, like lipopolysaccharide (LPS), leads to an increase in the production of pro-inflammatory cytokines, including TNF-α, by Schwann cells and spinal cord of diabetics, being crucial for the development of neuropathy.
DOI: 10.6084/m9.figshare.22308820.v1
title: Impact of gut-peripheral nervous system axis on the development of diabetic neuropathy

description: Diabetes is a chronic metabolic disease caused by a reduction in the production and/or action of insulin, with consequent development of hyperglycemia. Diabetic patients, especially those who develop neuropathy, presented dysbiosis, with an increase in the proportion of pathogenic bacteria and a decrease in the butyrate-producing bacteria. Due to this dysbiosis, diabetic patients presented a weakness of the intestinal permeability barrier and high bacterial product translocation to the bloodstream, in parallel to a high circulating levels of pro-inflammatory cytokines such as TNF-α. In this context, we propose here that dysbiosis-induced increased systemic levels of bacterial products, like lipopolysaccharide (LPS), leads to an increase in the production of pro-inflammatory cytokines, including TNF-α, by Schwann cells and spinal cord of diabetics, being crucial for the development of neuropathy.
DOI: 10.5281/zenodo.7754792
title: Sunlight-powered self-excited oscillators for sustainable autonomous soft robotics

description: As soft robotics fast advances, full autonomy becomes highly sought, especially if their motion can be powered by environmental energy and self-regulated. This would present a self-sustained fashion in terms of both energy supply and motion control. Currently, autonomous movement can be realized by leveraging out-of-equilibrium oscillatory motion of stimuli-responsive polymers under a constant light source. It would be more advantageous if environmental energy can be scavenged to power robots. However, generating oscillation becomes challenging under the limited power density of available environmental energy sources. Herein, we develop fully autonomous soft robots with self-sustainability based on self-oscillation. Aided by multiphysics modeling, we have successfully reduced the required input power density to around one-Sun level through a liquid crystal elastomer (LCE)-based bilayer structure. The autonomous motion of the low-intensity LCE/elastomer bilayer oscillator “LiLBot” under low energy supply was achieved by high photothermal conversion, low modulus, and high material responsiveness simultaneously. The LiLBot features tunable peak-to-peak amplitudes from 4 degrees to 72 degrees and frequencies from 0.3 Hertz to 11 Hertz. The oscillation approach offers a general strategy for desgining autonomous, untethered and sustainable small-scale soft robots, such as sailboat, walker, roller, and synchronized flapping wings.
DOI: 10.5281/zenodo.7754791
title: Sunlight-powered self-excited oscillators for sustainable autonomous soft robotics

description: As soft robotics fast advances, full autonomy becomes highly sought, especially if their motion can be powered by environmental energy and self-regulated. This would present a self-sustained fashion in terms of both energy supply and motion control. Currently, autonomous movement can be realized by leveraging out-of-equilibrium oscillatory motion of stimuli-responsive polymers under a constant light source. It would be more advantageous if environmental energy can be scavenged to power robots. However, generating oscillation becomes challenging under the limited power density of available environmental energy sources. Herein, we develop fully autonomous soft robots with self-sustainability based on self-oscillation. Aided by multiphysics modeling, we have successfully reduced the required input power density to around one-Sun level through a liquid crystal elastomer (LCE)-based bilayer structure. The autonomous motion of the low-intensity LCE/elastomer bilayer oscillator “LiLBot” under low energy supply was achieved by high photothermal conversion, low modulus, and high material responsiveness simultaneously. The LiLBot features tunable peak-to-peak amplitudes from 4 degrees to 72 degrees and frequencies from 0.3 Hertz to 11 Hertz. The oscillation approach offers a general strategy for desgining autonomous, untethered and sustainable small-scale soft robots, such as sailboat, walker, roller, and synchronized flapping wings.