cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5885437.v1
title: The effects of social media opinion leaders’ recommendations on followers’ intention to buy

description: Abstract Purpose: The objective of this study is to investigate how consumers are influenced in their intention to buy after having access - within social media - to persuasive messages sent out by digital opinion leaders. Design/methodology/approach: Data collection carried out via survey and data analysis carried out with the use of structural equation modeling. Findings: Digital opinion leaders capable of generating persuasive messages can change the attitudes of followers and make them accept the information provided, influencing their intention to buy evaluated products. Originality/value: The results show that it was possible to verify the direct and positive relationship between the persuasiveness of a message and the acceptance of the information contained in this message, while also indicating a significant relationship between the persuasiveness of the message and attitude change in relation to the purchase of goods evaluated by it. This highlights the relevance of these digital opinion leaders to the definition of marketing strategies by companies.
DOI: 10.6084/m9.figshare.7514228.v1
title: Storage and germination of seeds of Handroanthus heptaphyllus (Mart.) Mattos

description: The aim of this study was to determine the substrate and the most suitable sowing method for germination, as well as the environment for storage of Handroanthus heptaphyllus seeds (ipê-roxo), and infer the health quality provided by different packaging. Experiment 1 has assessed the treatments (substrates - blotting paper, filter paper, vermiculite, sand, besides paper roll; and sowing methods - among and on the substrates). Experiment 2 has assessed storage in three environments (air conditioned room - 18 °C and 49% of relative humidity (RH); cold and wet chamber - 8 °C and 80% RH; and dry and cold chamber - 7.5 ºC and 55% RH) , for 300 days. Handroanthus heptaphyllus seed germination test can be performed using seeding among blotting paper, vermiculite, on sand, between sand, on vermiculite and between filter paper. The storage of the seeds in plastic bags kept in an air conditioned room and/or in a dry and cold chamber is suitable for the preservation of Handroanthus heptaphyllus seeds for a period of 300 days. The packaging in a dry and cold chamber environment has provided a lower incidence of fungi associated with the Handroanthus heptaphyllus seeds.
DOI: 10.6084/m9.figshare.7514231.v1
title: The germination success of the cut seeds of Eugenia pyriformis depends on their size and origin

description: Seeds of Eugenia pyriformis may produce several seedlings after cutting. Both the type of cutting and the size of the seed can determine the success in obtaining new seedlings. The size of the seeds is dependent on both the number of seeds per fruit and the conditions in which seeds develop, as well as the biometric characteristics of these seeds obtained from different regions and seasons. The seeds from each origin were evaluated in length, width, thickness, water content and dry mass, as well as the average number of seeds per fruit. From one of the regions, seeds were grouped according to the number of seeds per fruit and also according to their size, and then cut into two and four parts, and then analyzed for the fragments germination. The results demonstrated the high capacity of these seed fragments to produce new seedlings, but the capability reduces with the reduction in seed size. This size depends not only on the number of seeds per fruit, but also on the region and the period of the seed production.
DOI: 10.6084/m9.figshare.7518149
title: Mapping of Forests Monodominated by Myracrodruon urundeuvaThrough Landsat/TM5 and Rapideye Images

description: ABSTRACTThe aim of this work was to evaluate the potential of Landsat-TM5 and Rapideye images for the mapping of forests with monodominance of aroeira in the municipality of Tumiritinga, Minas Gerais state, Brazil. We assessed different combinations involving bands of multispectral image, principal components, and normalized difference vegetation index (NDVI) for the supervised classification of Rapideye and Landsat/TM5 images. The thematic maps were evaluated by Kappa and conditional Kappa indexes for “aroeira” soil use class and by the analysis of Confusion Matrix. The best performance for the Rapideye classification showed Kappa 80 and Conditional Kappa 90 indexes. The best Landsat-TM5 classification produced Kappa 80 and conditional Kappa 76 indexes. The thematic map produced shows that 22% of the municipality is under the occupation of aroeira in monodominance. The study showed that both images can be used for mapping land use and land cover in Tumiritinga, and that Rapideye images produced best performance to mapping aroeira monodominance. The thematic map produced shows that 22% of the municipality is under the occupation of M. urundeuva in monodominance, and that this species is not endangered in Tumiritinga, Minas Gerais state.
DOI: 10.6084/m9.figshare.7512857
title: Collective drafting of the medical student’s code of ethics

description: Abstract This article describes the drafting of the Medical Student’s Code of Ethics comparing the process with what is described in literature. Data was collected through qualitative field research, by means of interviews with 24 students, and quantitative field research, using a questionnaire regarding ethical conflicts with a sample of 281 medical students. Based on the students’ views and bibliographic research, key issues regarding the preparation of the undergraduates’ code of ethics were identified. As a result, the code dealt with rights and duties of lecturers, patients, the institution and society as a whole, considering even contemporary problems such as the use of social networks and college hazing. The study concludes that the collective drafting of the code is the beginning of a process that intends to encourage reflection on health care and social perspective in order to take decisions consistent with ethical and moral principles, respecting human dignity.
DOI: 10.6084/m9.figshare.7518149.v1
title: Mapping of Forests Monodominated by Myracrodruon urundeuvaThrough Landsat/TM5 and Rapideye Images

description: ABSTRACTThe aim of this work was to evaluate the potential of Landsat-TM5 and Rapideye images for the mapping of forests with monodominance of aroeira in the municipality of Tumiritinga, Minas Gerais state, Brazil. We assessed different combinations involving bands of multispectral image, principal components, and normalized difference vegetation index (NDVI) for the supervised classification of Rapideye and Landsat/TM5 images. The thematic maps were evaluated by Kappa and conditional Kappa indexes for “aroeira” soil use class and by the analysis of Confusion Matrix. The best performance for the Rapideye classification showed Kappa 80 and Conditional Kappa 90 indexes. The best Landsat-TM5 classification produced Kappa 80 and conditional Kappa 76 indexes. The thematic map produced shows that 22% of the municipality is under the occupation of aroeira in monodominance. The study showed that both images can be used for mapping land use and land cover in Tumiritinga, and that Rapideye images produced best performance to mapping aroeira monodominance. The thematic map produced shows that 22% of the municipality is under the occupation of M. urundeuva in monodominance, and that this species is not endangered in Tumiritinga, Minas Gerais state.
DOI: 10.6084/m9.figshare.7451867.v1
title: PHOTOSYNTHETIC PARAMETERS AS PHYSIOLOGICAL INDICATORS OF TOLERANCE TO CADMIUM STRESS IN SUNFLOWER GENOTYPES

description: ABSTRACT The objective of the present study was to evaluate the tolerance to cadmium (Cd) of sunflower genotypes grown in greenhouse conditions, and the effectiveness of using photosynthetic parameters as physiological indicators of this tolerance. Seeds of two sunflower genotypes previously identified as tolerant (H358) and Cd-sensitive (AG960) to Cd were used. The seeds were germinated in plastic cups containing plant substrate; after 9 days, the seedlings were transplanted to plastic basins containing a nutrient solution with 0 or 10 µM of Cd, where they remained for 16 days. Samples of the plants were harvested every 5 days. The experiment was carried out in a randomized complete design, using a 4×2×2 factorial arrangement (4 days of grown in a nutrient solution with Cd, 2 sunflower genotypes, and 2 Cd levels) with four replications. Cd stress decreased CO2 net assimilation, stomatal conductance, carboxylation efficiency, photosynthetic pigment contents, potential quantum yield (Fv/Fm), and effective quantum yield of plants of the two evaluated genotypes. The decrease in photosynthetic rates of these plants was caused by both stomatal and non-stomatal limitations. Plants of the AG960 genotype showed more pronounced deleterious effects due to Cd stress than those of the H358 genotype. Thus, CO2 net assimilation rate, stomatal conductance, and chloroplast pigment content are good physiological indicators of sunflower tolerance to Cd and can at least in part, explain the greater tolerance of the H358 genotype to Cd stress when compared to the AG960 genotype.
DOI: 10.6084/m9.figshare.7511585
title: Access to the guidelines of oral hygiene among schoolchildren of public schools

description: Introduction:Access to oral health education is considered an important predictor for assessing the conditions and behaviors on oral health. Most 12-year children are in the school environment, being the school a propitious educational and social environment for both knowledge as behavioral changes are implemented.Objective:It is proposed to identify the prevalence of access to oral hygiene guidelines among schoolchildren of public schools and the factors associated with such access.Methodology:This is an analytical cross-sectional study conducted among 12-years schoolchildren of a Brazilian city with a large population size. The tests were performed by 24 trained and calibrated dentists with the aid of 24 annotators. Data collection occurred in 36 randomly selected public schools among the 89 schools of the city. Descriptive, univariate and multiple analyzes were conducted (OR/IC95%).Result:Of the 2,755 schoolchildren, 2,510 were included. Of these, 2,173 (86.6%) received oral hygiene guidelines. Access to guidelines for oral care was higher among male students and among those using private dental services or covenant. It was lower among those who used the service for dental treatment for over one year and among those who did not receive dental care at school, who reported a frequency of oral hygiene equal to once/day.Conclusion:Most of the students had access to guidelines for oral hygiene, with this access associated with variables related to personal determinants, health services and behaviors.
DOI: 10.6084/m9.figshare.7511585.v1
title: Access to the guidelines of oral hygiene among schoolchildren of public schools

description: Introduction:Access to oral health education is considered an important predictor for assessing the conditions and behaviors on oral health. Most 12-year children are in the school environment, being the school a propitious educational and social environment for both knowledge as behavioral changes are implemented.Objective:It is proposed to identify the prevalence of access to oral hygiene guidelines among schoolchildren of public schools and the factors associated with such access.Methodology:This is an analytical cross-sectional study conducted among 12-years schoolchildren of a Brazilian city with a large population size. The tests were performed by 24 trained and calibrated dentists with the aid of 24 annotators. Data collection occurred in 36 randomly selected public schools among the 89 schools of the city. Descriptive, univariate and multiple analyzes were conducted (OR/IC95%).Result:Of the 2,755 schoolchildren, 2,510 were included. Of these, 2,173 (86.6%) received oral hygiene guidelines. Access to guidelines for oral care was higher among male students and among those using private dental services or covenant. It was lower among those who used the service for dental treatment for over one year and among those who did not receive dental care at school, who reported a frequency of oral hygiene equal to once/day.Conclusion:Most of the students had access to guidelines for oral hygiene, with this access associated with variables related to personal determinants, health services and behaviors.
DOI: 10.6084/m9.figshare.7512857.v1
title: Collective drafting of the medical student’s code of ethics

description: Abstract This article describes the drafting of the Medical Student’s Code of Ethics comparing the process with what is described in literature. Data was collected through qualitative field research, by means of interviews with 24 students, and quantitative field research, using a questionnaire regarding ethical conflicts with a sample of 281 medical students. Based on the students’ views and bibliographic research, key issues regarding the preparation of the undergraduates’ code of ethics were identified. As a result, the code dealt with rights and duties of lecturers, patients, the institution and society as a whole, considering even contemporary problems such as the use of social networks and college hazing. The study concludes that the collective drafting of the code is the beginning of a process that intends to encourage reflection on health care and social perspective in order to take decisions consistent with ethical and moral principles, respecting human dignity.
DOI: 10.6084/m9.figshare.9739313
title: Numerical Study on Response Characteristics of Solid Rocket Pintle Motor

description: ABSTRACT: Pintle technology is currently a versatile technology used in a solid rocket motor (SRM) to control the desired thrust by changing the nozzle throat area, while effectively controlling the chamber pressure at the same time. The sudden movement of the pintle can induce rapid changes in the flow field and the occurrence of pressure oscillations inside the combustion chamber. The analysis of such rapid changes is essential to design an efficient controllable pintle rocket motor for a better thrust regulation. Two-dimensional axisymmetric models with mesh generation and required boundary condition were designed to analyze the effects of three different pintle head shape models in SRM thrust regulation effect. Dynamic mesh method was used with specific velocity for moving plug/pintle in the numerical analysis of SRM thrust regulation. The effects of different pintle head models on the flow field, combustion chamber pressure, mass-flow rate, thrust and Mach number were investigated. According to the analysis of total pressure response time, the simulation data revealed that circular pintle head model responded faster among three different models. According to the thrust effect, parabolic pintle has the maximum value of thrust and the greatest total pressure recovery coefficient among all pintle head models.
DOI: 10.6084/m9.figshare.11609268.v1
title: Effects of growth hormone in the central nervous system

description: ABSTRACT Growth hormone (GH) is best known for its effect stimulating tissue and somatic growth through the regulation of cell division, regeneration and proliferation. However, GH-responsive neurons are spread over the entire central nervous system, suggesting that they have important roles in the brain. The objective of the present review is to summarize and discuss the potential physiological importance of GH action in the central nervous system. We provide evidence that GH signaling in the brain regulates the physiology of numerous functions such as cognition, behavior, neuroendocrine changes and metabolism. Data obtained from experimental animal models have shown that disruptions in GH signaling in specific neuronal populations can affect the reproductive axis and impair food intake during glucoprivic conditions, neuroendocrine adaptions during food restriction, and counter-regulatory responses to hypoglycemia, and they can modify gestational metabolic adaptions. Therefore, the brain is an important target tissue of GH, and changes in GH action in the central nervous system can explain some dysfunctions presented by individuals with excessive or deficient GH secretion. Furthermore, GH acts in specific neuronal populations during situations of metabolic stress to promote appropriate physiological adjustments that restore homeostasis. Arch Endocrinol Metab. 2019;63(6):549-56
DOI: 10.6084/m9.figshare.9739313.v1
title: Numerical Study on Response Characteristics of Solid Rocket Pintle Motor

description: ABSTRACT: Pintle technology is currently a versatile technology used in a solid rocket motor (SRM) to control the desired thrust by changing the nozzle throat area, while effectively controlling the chamber pressure at the same time. The sudden movement of the pintle can induce rapid changes in the flow field and the occurrence of pressure oscillations inside the combustion chamber. The analysis of such rapid changes is essential to design an efficient controllable pintle rocket motor for a better thrust regulation. Two-dimensional axisymmetric models with mesh generation and required boundary condition were designed to analyze the effects of three different pintle head shape models in SRM thrust regulation effect. Dynamic mesh method was used with specific velocity for moving plug/pintle in the numerical analysis of SRM thrust regulation. The effects of different pintle head models on the flow field, combustion chamber pressure, mass-flow rate, thrust and Mach number were investigated. According to the analysis of total pressure response time, the simulation data revealed that circular pintle head model responded faster among three different models. According to the thrust effect, parabolic pintle has the maximum value of thrust and the greatest total pressure recovery coefficient among all pintle head models.
DOI: 10.6084/m9.figshare.11609268
title: Effects of growth hormone in the central nervous system

description: ABSTRACT Growth hormone (GH) is best known for its effect stimulating tissue and somatic growth through the regulation of cell division, regeneration and proliferation. However, GH-responsive neurons are spread over the entire central nervous system, suggesting that they have important roles in the brain. The objective of the present review is to summarize and discuss the potential physiological importance of GH action in the central nervous system. We provide evidence that GH signaling in the brain regulates the physiology of numerous functions such as cognition, behavior, neuroendocrine changes and metabolism. Data obtained from experimental animal models have shown that disruptions in GH signaling in specific neuronal populations can affect the reproductive axis and impair food intake during glucoprivic conditions, neuroendocrine adaptions during food restriction, and counter-regulatory responses to hypoglycemia, and they can modify gestational metabolic adaptions. Therefore, the brain is an important target tissue of GH, and changes in GH action in the central nervous system can explain some dysfunctions presented by individuals with excessive or deficient GH secretion. Furthermore, GH acts in specific neuronal populations during situations of metabolic stress to promote appropriate physiological adjustments that restore homeostasis. Arch Endocrinol Metab. 2019;63(6):549-56
DOI: 10.6084/m9.figshare.7451867
title: PHOTOSYNTHETIC PARAMETERS AS PHYSIOLOGICAL INDICATORS OF TOLERANCE TO CADMIUM STRESS IN SUNFLOWER GENOTYPES

description: ABSTRACT The objective of the present study was to evaluate the tolerance to cadmium (Cd) of sunflower genotypes grown in greenhouse conditions, and the effectiveness of using photosynthetic parameters as physiological indicators of this tolerance. Seeds of two sunflower genotypes previously identified as tolerant (H358) and Cd-sensitive (AG960) to Cd were used. The seeds were germinated in plastic cups containing plant substrate; after 9 days, the seedlings were transplanted to plastic basins containing a nutrient solution with 0 or 10 µM of Cd, where they remained for 16 days. Samples of the plants were harvested every 5 days. The experiment was carried out in a randomized complete design, using a 4×2×2 factorial arrangement (4 days of grown in a nutrient solution with Cd, 2 sunflower genotypes, and 2 Cd levels) with four replications. Cd stress decreased CO2 net assimilation, stomatal conductance, carboxylation efficiency, photosynthetic pigment contents, potential quantum yield (Fv/Fm), and effective quantum yield of plants of the two evaluated genotypes. The decrease in photosynthetic rates of these plants was caused by both stomatal and non-stomatal limitations. Plants of the AG960 genotype showed more pronounced deleterious effects due to Cd stress than those of the H358 genotype. Thus, CO2 net assimilation rate, stomatal conductance, and chloroplast pigment content are good physiological indicators of sunflower tolerance to Cd and can at least in part, explain the greater tolerance of the H358 genotype to Cd stress when compared to the AG960 genotype.
DOI: 10.6084/m9.figshare.7518806
title: Puberty beginning in lambs from hairless ewe submitted to caloric or protein restriction

description: AbstractThis study was carried out to evaluate if caloric or protein restriction in lactation ewe affect puberty beginning of its lambs. Had been used 21 lambs, two females and five males per type of treatment. During 60 days the mothers received the treatment for which its lamb was sort out: Control Treatment (TC, maintenance), Energy Restriction Treatment (TRC, ½ of the energy of the TC) and Protein Restriction Treatment (TRP, 1/3 of the protein of the TC). The lambs were weaned and received a diet composed by corn silage and concentrate, weighed and evaluated fortnightly. In males, the ejaculate was collected, scrotal circumference and testicular size measured. In females, it was realized ultrasound to measure the ovaries and verify the corpus luteum presence. For males was considered in puberty if produced ejaculation with at least: motility of 50%, sperm concentration of 50 x 106espermatozoa/mL and maximum of 50% total sperm abnormalities, and females if exhibit corpus luteum. An interaction was found between evaluation period and treatment for scrotum circumference (p=0.0019), testicular volume (p=0.0025) sperm motility (p&lt;0.0001) and concentration (p=0.027), TRP was later than TRC and TC in all variable. In female no treatment effect (p&gt;0.05) were found about follicles characteristics, however that was difference in the presence of corpous luteum (p=0.0179). The TC females showed corpus luteum from the 10th week, TRC 11th and 13th for TRP. It was concluded that mother protein restriction during the lactation delays the beginning of the puberty of its lambs.