cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11930169.v1
title: Surface roughness of edge glued panels (EGP) of amazon maneged species

description: ABSTRACT In the Amazon, the sustainable use of wood is associated with technological research that indicates industrial use. Surface roughness of wood is an important criterion for assessing tool condition, machining performance and product quality. The objective of this study was to evaluate the surface roughness of five Amazonian woods used in the manufacture of EGP (Edge Glued Panels).The woods Angelim pedra, Angelim vermelho, Breu vermelho, Murici and Piãozinho, obtained from managed areas of the Amazon, were used in the manufacture of EGP panels. Surface treatments were performed with 120 and 180 grit sandpaper. Surface ripples (roughness) were measured using a digital roughness meter with needle (n = 180 readings). Physical and mechanical tests were performed on both wood and EGP samples, to verify the possible relationship between these properties and roughness. EGP Piãozinho presented better surface quality, which consists of lower roughness (lower surface wave height), while EGP Angelim pedra presented uneven surfaces. Surface quality was satisfactory when 120 grain sandpaper was applied to most products. The results showed a highly significant effect of roughness such as the physical-mechanical properties. The highlight of the study is the wood and EGP Piãozinho, because in all the tests, it always presented the best performances.
DOI: 10.6084/m9.figshare.11930172.v1
title: Foliar fertilization on the production of grafted dwarf cashew seedlings

description: ABSTRACT Foliar fertilization is an important agricultural technique that has stood out for its ease of use and can contribute to the production of high-quality and -vigor cashew seedlings. The objective of this study was to evaluate the effect of foliar fertilizer rates and time of application on ‘BRS 226’ dwarf cashew seedlings after grafting. The experiment was carried out in a completely randomized design, with five treatments and 24 replicates. Each experimental unit consisted of one plant. The commercial product (NPK 20-20-20) was used at the recommended rate for fruit crops in general, 2.5 g L-1. Foliar fertilizer applications at 45 and 60 days after grafting (DAG), with 50% of the recommended rate (1.25 g L-1), or at 80 DAG, with 100% of the recommended, promoted increments of 9% and 13% in the total dry mass, respectively, in comparison to unfertilized plants. Besides that, at 80 DAG the foliar fertilizer application caused significant difference in the B contents, allowed obtaining better quality ‘BRS 226’ grafted dwarf-cashew seedlings. In the production of grafted seedlings of ‘BRS 226’ dwarf-cashew, it’s recommended to foliar fertilization at 45 and 60 days after grafting, with 1.25 g L-1 of the product based on NPK 20-20-20; or a single dose application 2.5 g L-1 at 80 days after grafting.
DOI: 10.6084/m9.figshare.11930157
title: Chemically Reduced Graphene Oxide on Gold Electrodes from Recordable CDs: Characterization and Potential Sensing Applications

description: This work presents the development and characterization of a new chemically modified electrode exploiting recordable Au-rewritable compact discs (AuCDs) as substrate for drop casting of a chemically-reduced graphene-oxide slurry focusing on simple and low-cost electrochemical sensors. Increase in electrochemical responses in cyclic voltammetric and amperometric measurements were achieved using the proposed sensor. Both scanning electron microscopy and atomic force microscopy data showed increase in rugosity (about 46% higher) for the chemically reduced graphene oxide (CRGO) AuCD surface while Raman spectroscopy confirmed the presence of structural defects of graphene. The calculated charge transfer resistances (Rct) and heterogeneous electron transfer rate constants (k0) were 1638 Ω and 0.0022 cm s-1 for the bare substrate, and 91 Ω and 0.0027 cm s-1 for the modified electrode, evidencing the facilitated electron transfer of the CRGO-AuCD surface. The dopamine (DP) amperometric detection using CRGO-AuCD provided low detection limit (0.12 µg L-1) compared with other modified electrodes already reported, high precision (relative standard deviation (RSD) &lt; 5%) and analytical frequency (370 h-1). As a proof-of-concept, DP determination in synthetic saliva samples was performed and a satisfactory recovery value (98.6 ± 0.9%) was obtained.
DOI: 10.6084/m9.figshare.11930160
title: PROFESSIONAL IDENTITY IMAGES OF FUTURE TEACHERS

description: ABSTRACT This article discusses the professional identity of teachers, based on the analysis of the final reflections of four masters students at the University of Lisbon, seeking to understand the conceptions of professional identity of these future teachers of secondary school science. This analysis uses a qualitative methodology focused on a narrative perspective. In their reflections, these future teachers refer to the importance of the learning that they made in the supervised teaching practice and their contribution to their professional development. These narratives, written in the first person, express the students’ perceptions about their evolution during the initial training process and highlight their professional identities at the end of this training cycle. This evolution stems from their teaching and non-teaching experiences and reveals different degrees of consolidation of their professional identities.
DOI: 10.6084/m9.figshare.11930163.v1
title: Anticancer drug screening: standardization of in vitro wound healing assay

description: ABSTRACT Introduction: Gliomas are characterized by rapid proliferation and aggressive invasion into normal surrounding brain tissue. In medical laboratories, the in vitro wound healing assay stands out as a simple, easy, inexpensive and affordable method to evaluate cell migration and proliferation. Objective: To standardize the in vitro wound healing assay using antimicrotubule drugs as positive controls. Methods: U87MG glioma cells were seeded at different densities and, after 24 h, the monolayer was scratched using different micropipette tip size to create a gap with no cells. The cells were then treated with colchicine and paclitaxel in culture medium with the presence or absence of fetal bovine serum. The wound was photographed with the aid of an inverted microscope and the wound area was measured using the Image J software. Results: Better defined edges scratches and monolayer with approximately 90% confluence were obtained at 1.5 and 2 x 105 cells/well density. The width and area of the scratch were, respectively, 948 pm/2.193221 mm2; 964 pm/2.266 mm2 and 1448 pm/3.221 mm2 to 10. 200 and 1000 pl micropipette tips. Colchicine inhibited wound closure by 12.6% or 3.4%, both in the presence or absence of serum; paclitaxel 2.4 and 6.7% respectively. Conclusion: Under standardized conditions, colchicine and paclitaxel proved to be efficient positive controls into the in vitro wound healing assay.
DOI: 10.6084/m9.figshare.11930154
title: PEDAGOGICAL TRAINING AND PROFESSIONAL DEVELOPMENT IN HIGHER EDUCATION: PROFESSOR PERSPECTIVES

description: ABSTRACT The text presents the results of a study that sought to understand which practices are recognized by higher education teachers as promoting learning and professional development, particularly in the teaching component. It also aimed to understand how these actors perceive the pedagogical training for academics. As part of a mixed approach, using the technique of interview and questionnaire, scholars were affiliated with three higher education schools in the region of Lisbon and Tagus Valley. The results reveal a tendency towards learning processes of artisanal nature, being valued the self-study and the socialization. However, there is a recognition of the relevance of pedagogical training, especially for those who do not have qualifying training for other levels of education, emerging as a belief that the pedagogical learning acquired in other contexts of education and teaching can be transferred for teaching performance at higher education level.
DOI: 10.6084/m9.figshare.11930157.v1
title: Chemically Reduced Graphene Oxide on Gold Electrodes from Recordable CDs: Characterization and Potential Sensing Applications

description: This work presents the development and characterization of a new chemically modified electrode exploiting recordable Au-rewritable compact discs (AuCDs) as substrate for drop casting of a chemically-reduced graphene-oxide slurry focusing on simple and low-cost electrochemical sensors. Increase in electrochemical responses in cyclic voltammetric and amperometric measurements were achieved using the proposed sensor. Both scanning electron microscopy and atomic force microscopy data showed increase in rugosity (about 46% higher) for the chemically reduced graphene oxide (CRGO) AuCD surface while Raman spectroscopy confirmed the presence of structural defects of graphene. The calculated charge transfer resistances (Rct) and heterogeneous electron transfer rate constants (k0) were 1638 Ω and 0.0022 cm s-1 for the bare substrate, and 91 Ω and 0.0027 cm s-1 for the modified electrode, evidencing the facilitated electron transfer of the CRGO-AuCD surface. The dopamine (DP) amperometric detection using CRGO-AuCD provided low detection limit (0.12 µg L-1) compared with other modified electrodes already reported, high precision (relative standard deviation (RSD) &lt; 5%) and analytical frequency (370 h-1). As a proof-of-concept, DP determination in synthetic saliva samples was performed and a satisfactory recovery value (98.6 ± 0.9%) was obtained.
DOI: 10.6084/m9.figshare.11930160.v1
title: PROFESSIONAL IDENTITY IMAGES OF FUTURE TEACHERS

description: ABSTRACT This article discusses the professional identity of teachers, based on the analysis of the final reflections of four masters students at the University of Lisbon, seeking to understand the conceptions of professional identity of these future teachers of secondary school science. This analysis uses a qualitative methodology focused on a narrative perspective. In their reflections, these future teachers refer to the importance of the learning that they made in the supervised teaching practice and their contribution to their professional development. These narratives, written in the first person, express the students’ perceptions about their evolution during the initial training process and highlight their professional identities at the end of this training cycle. This evolution stems from their teaching and non-teaching experiences and reveals different degrees of consolidation of their professional identities.
DOI: 10.6084/m9.figshare.11930148
title: Fertility transition in Brazil across the 20th century – a regional perspective

description: Abstract The essence of fertility transition is the shift from intensive reproduction, when many children are born but few survive, to a new pattern where births are fewer and planned. Some articles discussing fertility transition in Brazil indicate that this process began in the second half of the 1960s, characterizing the Brazilian transition as late and fast. Despite this consensus, the objective of this paper was to identify “when” and “where” fertility transition started in Brazil, reassessing regional fertility transition. We used the method proposed by Frias and Oliveira (1991) applied to Brazilian census data (1940, 1950 and 1970 to 2010) Results indicate that fertility transition had been underway since, at least the 1930s in some of Brazil’s most important regions like Rio de Janeiro, São Paulo, and the far South. Because of this complex scenario, we argue that Brazil experienced two phases of fertility transition. The first one would have been long and slow, like the European fertility transition, pioneered by Rio de Janeiro, São Paulo, and the far South, whereas the second one was short and fast, in line with the fertility transition observed in countries where the process began later.
DOI: 10.6084/m9.figshare.11930151
title: Minutifloroside, a New Bis-Iridoid Glucoside with Antifungal and Antioxidant Activities and Other Constituents from Palicourea minutiflora

description: A new bis-iridoid glucoside minutifloroside (1) was isolated from Palicourea minutiflora, together with asperuloside, (-)-epicatechin, catechin, quercetin, rutin, ursolic acid, oleanolic acid, daucosterol and two monoterpenic indole alkaloids strictosidinic acid and vincosamine. Structural characterization of the compounds was established on their spectral data basis, mainly mass spectrometry (MS) and 1D and 2D nuclear magnetic resonance (NMR). The bis-iridoid showed high activity against Candida albicans strain and antioxidant activity.
DOI: 10.6084/m9.figshare.11930154.v1
title: PEDAGOGICAL TRAINING AND PROFESSIONAL DEVELOPMENT IN HIGHER EDUCATION: PROFESSOR PERSPECTIVES

description: ABSTRACT The text presents the results of a study that sought to understand which practices are recognized by higher education teachers as promoting learning and professional development, particularly in the teaching component. It also aimed to understand how these actors perceive the pedagogical training for academics. As part of a mixed approach, using the technique of interview and questionnaire, scholars were affiliated with three higher education schools in the region of Lisbon and Tagus Valley. The results reveal a tendency towards learning processes of artisanal nature, being valued the self-study and the socialization. However, there is a recognition of the relevance of pedagogical training, especially for those who do not have qualifying training for other levels of education, emerging as a belief that the pedagogical learning acquired in other contexts of education and teaching can be transferred for teaching performance at higher education level.
DOI: 10.6084/m9.figshare.11930148.v1
title: Fertility transition in Brazil across the 20th century – a regional perspective

description: Abstract The essence of fertility transition is the shift from intensive reproduction, when many children are born but few survive, to a new pattern where births are fewer and planned. Some articles discussing fertility transition in Brazil indicate that this process began in the second half of the 1960s, characterizing the Brazilian transition as late and fast. Despite this consensus, the objective of this paper was to identify “when” and “where” fertility transition started in Brazil, reassessing regional fertility transition. We used the method proposed by Frias and Oliveira (1991) applied to Brazilian census data (1940, 1950 and 1970 to 2010) Results indicate that fertility transition had been underway since, at least the 1930s in some of Brazil’s most important regions like Rio de Janeiro, São Paulo, and the far South. Because of this complex scenario, we argue that Brazil experienced two phases of fertility transition. The first one would have been long and slow, like the European fertility transition, pioneered by Rio de Janeiro, São Paulo, and the far South, whereas the second one was short and fast, in line with the fertility transition observed in countries where the process began later.
DOI: 10.6084/m9.figshare.11930151.v1
title: Minutifloroside, a New Bis-Iridoid Glucoside with Antifungal and Antioxidant Activities and Other Constituents from Palicourea minutiflora

description: A new bis-iridoid glucoside minutifloroside (1) was isolated from Palicourea minutiflora, together with asperuloside, (-)-epicatechin, catechin, quercetin, rutin, ursolic acid, oleanolic acid, daucosterol and two monoterpenic indole alkaloids strictosidinic acid and vincosamine. Structural characterization of the compounds was established on their spectral data basis, mainly mass spectrometry (MS) and 1D and 2D nuclear magnetic resonance (NMR). The bis-iridoid showed high activity against Candida albicans strain and antioxidant activity.
DOI: 10.6084/m9.figshare.11930139
title: Chiral Amino and Imino-Alcohols Based on (R)-Limonene

description: Derivatives of the natural occurring and inexpensive terpene (R) -limonene were synthetized and completely characterized. Starting from internal olefin epoxidation, followed by epoxide opening with sodium azide and azide reduction with LiAlH4, two chiral amino-alcohols were obtained. The amino-alcohols were reacted with three different aldehydes, generating six new imino-alcohols, two of them yielding crystals suitable for X-ray diffraction characterization. The reduction of four of these compounds with LiAlH4 led to new amino-alcohols. All derivatives were obtained with good overall yields through simple reaction protocols.
DOI: 10.6084/m9.figshare.11930142
title: Screening of the Au:Pt Atomic Ratio Supported in SrCO3: Effects on the Performance of the Solvent-Free Oxidation of Benzyl Alcohol

description: We have prepared, by a sol-immobilization method, bimetallic catalysts with different Au:Pt atomic ratios supported on commercial SrCO3. The catalytic performance for the oxidation reaction of benzyl alcohol of such materials was compared to the monometallic counterparts, aiming at the obtaining of the best composition of the material. It was found that the Au:Pt atomic ratio presents a remarkable effect on the system performance, i.e., Pt-rich systems are more selective; however, less active. Thus, an equilibrium related to the activity and selectivity of the system was obtained by considering the yield of the system. Also, some density functional theory (DFT) insights were obtained by using a cluster of 14 atoms of Au and 1 or 2 atoms of Pt. X-ray photoelectron spectroscopy, elemental mapping in scanning transmission electron microscopy before and after catalyst usage, flame atomic absorption spectroscopy, Rietveld refinement, among other techniques, were used and associated to the experimental data, which allowed us to propose a catalytic mechanism for the system, which was important since SrCO3 has not been considered before as catalyst support for alcohol oxidation reactions.
DOI: 10.6084/m9.figshare.11930145
title: Impact of adult sons’ marriage squeeze on the mental health of parents in rural China

description: ABSTRACT: Studying the influencing factors and interventions of mental health in rural China has important practical significance for promoting personal development and social progress. Using the 2016 waves of the China Family Panel Studies data, this paper examined the effect of adult sons’ marriage squeeze on parents’ mental health in rural China and its corresponding mechanisms. Our study showed a significant negative association between adult sons’ marriage squeeze and the mental health status of rural parents. Moreover, the negative association of adult sons’ marriage squeeze with mental health is larger for female parents, parents who are less than 60 years old and parents living with children. In addition, we investigated possible mechanisms of the effect, including intergenerational support, intergenerational relationship and neighborhood relationship, and that adult sons’ marriage squeeze mainly damages the mental health of rural parents by increasing the downstream intergenerational support of rural parents and worsening intergenerational and neighborhood relationships.
DOI: 10.6084/m9.figshare.11930139.v1
title: Chiral Amino and Imino-Alcohols Based on (R)-Limonene

description: Derivatives of the natural occurring and inexpensive terpene (R) -limonene were synthetized and completely characterized. Starting from internal olefin epoxidation, followed by epoxide opening with sodium azide and azide reduction with LiAlH4, two chiral amino-alcohols were obtained. The amino-alcohols were reacted with three different aldehydes, generating six new imino-alcohols, two of them yielding crystals suitable for X-ray diffraction characterization. The reduction of four of these compounds with LiAlH4 led to new amino-alcohols. All derivatives were obtained with good overall yields through simple reaction protocols.
DOI: 10.6084/m9.figshare.11930142.v1
title: Screening of the Au:Pt Atomic Ratio Supported in SrCO3: Effects on the Performance of the Solvent-Free Oxidation of Benzyl Alcohol

description: We have prepared, by a sol-immobilization method, bimetallic catalysts with different Au:Pt atomic ratios supported on commercial SrCO3. The catalytic performance for the oxidation reaction of benzyl alcohol of such materials was compared to the monometallic counterparts, aiming at the obtaining of the best composition of the material. It was found that the Au:Pt atomic ratio presents a remarkable effect on the system performance, i.e., Pt-rich systems are more selective; however, less active. Thus, an equilibrium related to the activity and selectivity of the system was obtained by considering the yield of the system. Also, some density functional theory (DFT) insights were obtained by using a cluster of 14 atoms of Au and 1 or 2 atoms of Pt. X-ray photoelectron spectroscopy, elemental mapping in scanning transmission electron microscopy before and after catalyst usage, flame atomic absorption spectroscopy, Rietveld refinement, among other techniques, were used and associated to the experimental data, which allowed us to propose a catalytic mechanism for the system, which was important since SrCO3 has not been considered before as catalyst support for alcohol oxidation reactions.
DOI: 10.6084/m9.figshare.11930145.v1
title: Impact of adult sons’ marriage squeeze on the mental health of parents in rural China

description: ABSTRACT: Studying the influencing factors and interventions of mental health in rural China has important practical significance for promoting personal development and social progress. Using the 2016 waves of the China Family Panel Studies data, this paper examined the effect of adult sons’ marriage squeeze on parents’ mental health in rural China and its corresponding mechanisms. Our study showed a significant negative association between adult sons’ marriage squeeze and the mental health status of rural parents. Moreover, the negative association of adult sons’ marriage squeeze with mental health is larger for female parents, parents who are less than 60 years old and parents living with children. In addition, we investigated possible mechanisms of the effect, including intergenerational support, intergenerational relationship and neighborhood relationship, and that adult sons’ marriage squeeze mainly damages the mental health of rural parents by increasing the downstream intergenerational support of rural parents and worsening intergenerational and neighborhood relationships.
DOI: 10.6084/m9.figshare.11930130
title: Combining canine mesenchymal stromal cells and hyaluronic acid for cartilage repair

description: Abstract Cell therapy and tissue engineering have been intensively researched for repair of articular cartilage. In this study, we investigated the chondrogenic potential of canine adipose-derived mesenchymal stromal cells (ASCs) combined to high molecular weight hyaluronic acid (HA) in vitro, and their therapeutic effect in dogs with chronic osteoarthritis (OA) associated with bilateral hip dysplasia. Canine ASCs were characterized after conventional 2D culture or 3D culture in HA, showing adequate immunophenotype, proliferation and trilineage differentiation, as well as chondrogenesis after cultivation in HA. ASC/HA constructs were used to treat 12 dogs with OA, sequentially assigned to control, ASC and ASC/HA groups. Animals were examined for clinical, orthopedic and radiological parameters. Lameness at walk and pain on manipulation were reduced in the ASC group and mainly in the ASC/HA group. Range of motion and detection of crepitus on hip rotation and abduction improved similarly in all groups. For articular edema, muscle atrophy, Norberg angle values and radiographic analyses, there were no variations throughout the period. These results indicate that ASC/HA constructs are safe and may be an effective therapeutic tool in treating canine chronic osteoarthritis, which should be confirmed with larger studies and additional clinical parameters.