Search

This paper draws on a three-year ethnographic study during which we investigated young children's cultural development in a Brazilian early childhood centre. A cultural-historical approach was used to understand the concept of autonomy. We focus on Danilo, a very young child who overcame his fear of using a play slide (a cultural artefact). We believe that this process led to his achievement. Our findings suggest that young children's conquests consist of intentional actions that become part of their individual and social identities.

This systematic review examined the effects of distinct physical activity interventions on the academic achievement of school students based on an analysis of four distinct outcomes: mathematics, language, reading, and composite scores. This study was performed in accordance with the PRISMA guidelines and the QUORUM statement. A literature search was conducted using the PubMed-MEDLINE, Scopus, and Web of Science databases. Peer-reviewed studies published in English, Portuguese, and Spanish were considered. A random-effect meta-analysis was employed to determine the effect of interventions on academic performance. The effects between interventions and control groups were expressed as standardized mean differences. Thirty-one studies were included in the meta-analysis based on the inclusion and exclusion criteria. The exercise programs were not capable of significantly improving language, reading skills, and composite scores. Conversely, performance in math tests increased significantly after the interventions compared with the control groups. Regarding the overall effect, a significant improvement in academic achievement was detected after physical activity programs compared with controls. In conclusion, the positive effects of school-based physical education on academic performance are not uniform and may be higher for math skills. The implementation of evidence-based exercise programs in school settings emerges as a promising strategy to increase overall academic achievement in school-aged students.

Our purpose in this article is to examine the subjective processes of researchers while becoming conscious during the investigation of infants and toddlers (I/Ts) in educational settings. Based on the intertwining between Cultural-historical Psychology and Ethnography in Education, we followed a group of I/Ts at a Brazilian Early Childhood Education Center between 2017 and 2019. This extended length of time in the field allowed us to build a logic of inquiry with consciousness as its foundation. We focus on an analysis of four events which occurred at different times within this two-year period that make visible the researcher's processes of becoming conscious at the center of the research process itself. Becoming conscious enabled repositioning ourselves as researchers, transforming the research process, and reorganizing the latter as a whole. In this study, we demonstrate that 'becoming conscious' involves considering whether the research extends beyond being an object of knowledge, and includes a meta-analysis of the research path actually taken through approximations and distancing with data, as well as the creation of new interpretations, solutions and combinations of these, as the study progressed. We argue that becoming conscious, as a relational and situated process, is an essential dimension of educational research.

Past research has shown that assessments of engineering students' transferable skills have not been properly investigated or incorporated into the practices of higher education institutions. This study addressed this gap by proposing a System for Assessing Engineering Students' Transferable Skills (SACTEE, in Portuguese), which includes scales for assessment by self, peers, and teachers. The study also sought to provide evidence of the scale's content validity, internal consistency, and replicability. A total of 147 students, 23 professors, and 8 representatives of the academic management staff participated on the study to assure the scales' content validity and internal consistency. Two confirmatory focus groups with 15 representatives from public and private HEIs in Brazil analysed the usefulness and replicability of the system. The results demonstrated the preliminary psychometric quality of the instruments and the replicability of the SACTEE, thus contributing to engineering education research field and to assessing and developing students' transferable skills.

This study examined the impact of early childhood in physical education (ECPE) practicum experiences on pre-service teachers' (PSTs) perceptions on the development of the knowledge base. Specifically, this study focused on how PSTs bridged the gap between knowledge learned during campus classes and practicum experiences in an early childhood (EC) public school. Eighteen PSTs participated in practicum experiences embedded in two ECPE courses from a physical education teacher education program in Brazil. Data collection included focus group interviews. Data analysis was conducted through thematic categorical content analysis using a hermeneutic perspective to code the internal structure of the theme and their relationships. Participants initiated their practicum experiences based on academic knowledge in ECPE. Nonetheless, the findings suggest that new knowledge was generated through multiple and repeated practical lessons within their own singularities. These contextual singularities allowed PSTs to re-elaborate their knowledge and produce new ways to respond to different teaching situations. Participants acknowledged the importance of knowledge of students, the benefits of implementing different teaching styles and the need of improving common content knowledge in ECPE. The findings of this study indicate that the partnership between university and school was an effective way to bridge the gap between theory and practice. This partnership provided identification and application of teachers' knowledge base.

BACKGROUND: PEEP is a cornerstone treatment for children with pediatric ARDS. Unfortunately, its titration is often performed solely by evaluating oxygen saturation, which can lead to inadequate PEEP level settings and consequent adverse effects. This study aimed to assess the impact of increasing PEEP on hemodynamics, respiratory system mechanics, and oxygenation in children with ARDS. METHODS: Children receiving mechanical ventilation and on pressure-controlled volume-guaranteed mode were prospectively assessed for inclusion. PEEP was sequentially changed to 5, 12, 10, 8 cm H2O, and again to 5 cm H2O. After 10 min at each PEEP level, hemodynamic, ventilatory, and oxygenation variables were collected. RESULTS: A total of 31 subjects were included, with median age and weight of 6 months and 6.3 kg, respectively. The main reasons for pediatric ICU admission were respiratory failure caused by acute viral bronchiolitis (45%) and community-acquired pneumonia (32%). Most subjects had mild or moderate ARDS (45% and 42%, respectively), with a median (interquartile range) oxygenation index of 8.4 (5.8-12.7). Oxygen saturation improved significantly when PEEP was increased. However, although no significant changes in blood pressure were observed, the median cardiac index at PEEP of 12 cm H2O was significantly lower than that observed at any other PEEP level (P = .001). Fourteen participants (45%) experienced a reduction in cardiac index of > 10% when PEEP was increased to 12 cm H2O. Also, the estimated oxygen delivery was significantly lower, at 12 cm H2O PEEP. Finally, respiratory system compliance significantly reduced when PEEP was increased. At a PEEP of 12 cm H2O, static compliance had a median reduction of 25% in relation to the initial assessment (PEEP of 5 cm H2O). CONCLUSIONS: Although it may improve arterial oxygen saturation, inappropriately high PEEP levels may reduce cardiac output, oxygen delivery, and respiratory system compliance in pediatric subjects with ARDS with low potential for lung recruitability. [ABSTRACT FROM AUTHOR]

This study captures the possibilities of infants' interactions in a Brazilian Early Childhood Education Centre. It contributes to an increasing number of educational research that is capturing the specificities of how young children use their understandings of context through gestures and verbal forms of language to create meanings as they develop social relationships with their peers and adults. The meanings of these interactions are explored based on the Vygotskyan notion of "perezhivanie." The research design was guided by ethnography in education principles. Participant researchers used fieldnotes and video recording to capture infants' interactions at the centre. For the purposes of this study, events were selected that related to the use of the cultural artefact pacifier. While teachers and families regarded the pacifier as an artefact that calms infants, helping them settle into a new environment, this study expands infants use of pacifiers as they also became artefacts to be explored and part of infants' social relations with each other. The events analysed highlight the biology/culture and emotion/cognition unities in infants' processes of development. This study argues for expanding teachers' practices in a process of appreciating what infants' intentions are and what they are communicating.

This study examines how curriculum in physical education (PE) in Brazil has evolved in the last 20 years. Since the beginning of the 20th century, PE in the Brazilian schools has been influenced by different conceptual, political, philosophical, scientific, and pedagogical trends. The most influential trends were originated from medical field, military, sports, and pedagogical philosophies. This analysis process consists of (a) a review of the Brazilian PE historical perspective, (b) an overview of the scope of national curriculum guidelines established between 1997 and 2017, and (c) a description and reflection of the transition from national guidelines to a recently established compulsory national curriculum. The findings suggest that the evolution of PE in Brazil resulted in significant positive changes in terms of inclusiveness, cultural diversity, and the expansion of the content using the concept of culture of the body. Multiculturalism, although still a challenge, was indeed considered in the former recommended guidelines and the current compulsory curriculum document.

In this study, we systematically examined the importance of human rights standards and principles for rights-based pre-exposure prophylaxis (PrEP) provision for marginalized adolescents. Nested within a demonstration study of PrEP provision to adolescent men who have sex with men, travestis, and transgender women, we carried out interviews in São Paulo, Brazil with 25 adolescents, eight health providers, and six workers involved in community-based demand creation. Analysis focused on participants' narratives about aspects of human rights within service delivery, including the availability, accessibility, acceptability, and quality of services; informed decision-making; nondiscrimination; and privacy and confidentiality. Clients and service providers highlighted the importance of availing a range of services beyond PrEP and described how community outreach and social media helped promote accessibility. Acceptability centered around clients feeling heard and respected. Health workers appreciated having time to build trusting relationships with clients to ensure quality of care and support informed decision-making. Nondiscrimination was valued by all, including using clients' chosen pronouns. Privacy and confidentiality were primary concerns for clients who were not "out" about their sexuality or PrEP use; to mitigate this, health workers sought to accommodate clients' preferred channels of communication. Rights-based PrEP services can help promote engagement and retention in PrEP services, particularly for marginalized populations. [ABSTRACT FROM AUTHOR]

Geostatistics is a crucial tool for data analysis in the field of precision agriculture, allowing the characterization of spatial variability magnitude, optimizing profitability and yield in agricultural areas. In this context, the present study aimed to evaluate the spatial dependence of the variables yield, Normalized Difference Vegetation Index (NDVI), and surface temperature in winter wheat plants. This was achieved through fitting semivariograms with different statistical models and interpolating the study variables using Ordinary kriging. The experiment was conducted at Fazenda Santa Helena, located in the municipality of Lavras in the state of Minas Gerais, Brazil, with a 12-hectare winter wheat crop of the TBIO Calibre variety. Data were collected using a grid sampling method at different stages of wheat plant growth (tillering and elongation). The analyzed variables included yield, NDVI, and surface temperature. Statistical analyses were performed using the R software. Initially, the spatial dependence of the study variables was analyzed by fitting semivariograms using the Restricted Maximum Likelihood (REML) method and considering spherical, exponential, and gaussian models. The evaluation of errors was carried out through cross-validation, and subsequently, the data interpolation was performed using ordinary kriging with the best-fitted semivariogram model. The results demonstrated a proper fit of semivariograms for the study models, with the spherical model standing out for surface temperature variables (elongation and tillering), NDVI (tillering), and the exponential model for NDVI (elongation) and yield. Therefore, the use of geostatistics is emphasized as an important tool to assist in precision agriculture management in winter wheat crops. [ABSTRACT FROM AUTHOR]

Fish populations in environments with a high degree of geographic isolation may be prone to mutations expressed in the phenotypes. These mutations may be related to color pattern, forming leucistic individuals. This work aims to register and to describe possible mechanisms that influence this mutation. Additionally, the study compares other morphometric variations among different populations and leucistic individuals of Heptapterus mustelinus. A total of four leucistic individuals were collected in a small shaded stream, highly segmented by rapids and waterfalls. The biometric analyses showed no significant morphological differences when compared to other populations of the same ecoregion. The selection of leucism may be directly related to the sampled environment, since the leucistic specimens occurred in a shaded stream with dense vegetation cover. Low occurrence of predatory species of fish can be an important point to maintain the characteristic. Consequently, predation may not exert a negative selective pressure on leucistic individuals. [ABSTRACT FROM AUTHOR]

This study evaluated the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in Santos Bay (SB) and the adjacent Santos Continental Shelf (SCS) in Brazil. Biliary metabolites were measured in several fish species to establish a baseline for future monitoring programs. Bile samples from different species of fish were collected monthly from July to December 2005 in SB, and in August 2005 and February 2006 on SCS. Metabolite concentrations were determined using high-performance liquid chromatography with fluorescence detectors. Naphthalene, phenanthrene, and benzo[a]pyrene metabolite concentrations ranged from 24 to 810 µg g-1 of bile, 1.8 to 68 µg g-1 of bile, and below the limit of quantitation to 1.3 µg g-1 of bile, respectively. Despite its high concentrations, the levels of naphthalene metabolites were in regions of low-contamination, while benzo[a]pyrene metabolite were in the same range as those reported in moderately contaminated areas, which may indicate pyrolytic contamination by PAHs. No significant differences in the metabolite concentrations were found between the SB and the SCS samples or during the periods of collection. Future studies with a single biomonitoring species should be conducted, considering age, sex, and feeding condition of the individuals. The metabolite data presented in this study is an important baseline information for this urbanized region, which hosts several sources of contaminants. [ABSTRACT FROM AUTHOR]

Copyright of Revista Ciência & Saúde Coletiva is the property of Associacao Brasileira de Pos-Graduacao em Saude Coletiva and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The abundance and movement patterns of lemon sharks (Negaprion brevirostris) at Lama Bay, Biological Reserve Rocas Atoll, were reassessed by visual census. We considered tides and daylight periods to plan our observations during two expeditions in 2015. Using daily visual counts, the mean abundance of individuals was 29 in austral summer (maximum 35) and 31 in winter (maximum 41). The results indicated that the local lemon shark population might have recovered after 18 years of a substantial drop in mean abundance. In addition, the movement pattern of the species corroborated previous studies related to their fidelity to the birthplace. These results justify the need of continuous monitoring of lemon sharks over the course of time at Rocas Atoll using non-lethal and non-invasive techniques. [ABSTRACT FROM AUTHOR]

Copyright of Ciencia, Cuidado e Saude is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ciencia, Cuidado e Saude is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arquivos Brasileiros de Oftalmologia is the property of Arquivos Brasileiros de Oftalmologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Saúde Coletiva is the property of MPM Comunicacao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Saúde Coletiva is the property of MPM Comunicacao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The objective of this observational and correlational cross-sectional study was to analyze the association of labor variables, lifestyle, and low back pain among workers on a grape farm in the northeast region of Brazil. A total of 180 rural workers, men and women, age 18 years and older, and active on the company's staff, participated in the study. The presence of low back pain, considered as a dependent variable, was categorized as yes or no, and the independent variables were personal, work, and lifestyle factors. The workers performed functions in the field (72%) and fruit packing (28%). Low back pain was reported by 44.1% (n = 79) of the participants. There were associations between low back pain and the function performed by the worker. Thus, workers in fruit packing were 1.53 more likely to have low back pain (95% CI 1.09-2.15) when compared with workers in the field, demonstrating the need for strategies to improve the structure of the workday, such as the inclusion of active breaks. [ABSTRACT FROM AUTHOR]

Purpose: This study aims to investigate how Suzano implemented shared value (SV) strategies to reconcile profitability and social welfare by joining innovation and sustainability. Design/methodology/approach: The authors use an exploratory, descriptive qualitative approach using the interactive qualitative analysis (IQA) method. IQA procedures and protocols were operationalized to get to Suzano's SV system. Primary data were collected through in-depth interviews. Content analyses were conducted with the support of Atlas.ti software. Findings: The most relevant findings of this research are (1) Suzano developed a unique strategy to spread collaborative and innovation mindset throughout the organization called "innovability"; (2) Suzano's effort to understand local community's demands and a collaborative work raised the companies' profitability and enabled prosperity for the community; (3) the IQA procedures and protocols enabled the development of a Suzano's SV system, composed of nine elements and their relationships. They are purpose-driven leadership, materiality matrix, social welfare, profitability, ecosystem, business results, social results, impact and sustainable economic development, (4) purpose-driven leadership is the system's driver. Research limitations/implications: This study was limited to studying the implementation of the SV as a strategy to reconcile profitability and welfare. Despite the findings about the company's conflicts with local communities and the strategy with small family producers, other studies could evaluate the strategy of different stakeholders, such as the supply chain since Suzano is one of the leading companies of paper sales in Brazil. Practical implications: By using IQA protocols and the nine elements of this study, other researchers may replicate it to investigate the adoption of SV strategies in other organizations. The SV system developed in this study may be used by business leaders to disseminate the SV policies and practices in their organization. Social implications: The company adopts the three forms of SV -reconceiving products and markets, redefining productivity in the value chain and developing clusters with the local community-as strategies for sustainable and collaborative management. Suzano was led to get involved with the problems and conflicts' root causes. By doing so, the company unlocked innovation as a driver to achieve sustainable and responsible management. For them, innovation is in service of sustainability, creating innovability. Both concepts are part of the whole organization culture and practice. Innovability is Suzano's essence, and SV strategies are the means to scale it. Originality/value: The originality of the paper relies on the method and techniques used to gather and analyze primary data, in which the unit of analysis (Suzano's SV strategy) was considered a system. Major findings were validated with research participants. By using IQA protocols and the nine elements of this study, other researchers may replicate it to investigate the adoption of SV strategies in other organizations. [ABSTRACT FROM AUTHOR]

This study aimed to compare the prevalence of food consumption assessment coverage in children under 10 years old before and after the implementation of the Healthy Growth Program (HGP). In this sense, a cross-sectional study was conducted using data from 548 municipalities registered in the HGP and available in the Food and Nutritional Surveillance System of the Brazilian Ministry of Health. The food consumption assessment coverage indicator was analyzed per geographic regions, a Chi-square test was performed and the Prevalence Ratios (PR) and their respective 95% confidence intervals (95% CI) were estimated. Food consumption assessment coverage increased from 0.25% in 2015 to 1.78% in 2018 (PR=7.09; 95%CI 7.00;7.18). The Southern region showed the highest and the Midwestern region the lowest increase in food consumption coverage. Although food consumption assessment coverage has increased less than the five-percent target set by the HGP, there has been an improvement in monitoring the nutritional status of children, which requires developing actions that support mapping the food and nutritional scenario of children in Brazil. [ABSTRACT FROM AUTHOR]

Copyright of Religião e Sociedade is the property of Instituto de Estudos da Religiao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Radiologia Brasileira is the property of Radiologia Brasileira and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objectives: To describe the epidemiological and clinical profile of the patients with preeclampsia in a hospital in the Amazon region.Study Design: Observational descriptive cross-sectional study, performed at Fundação Santa Casa de Misericórdia do Pará, a maternity hospital in Pará, Brazil. The pregnant patients admitted between July 1st and December 31st 2018 due to pre-eclampsia had their medical records researched to describe their epidemiological profile, medical history, obstetric profile and clinical manifestations of pre-eclampsia. Patients with incomplete data were not included in the missing variable's rate.Main Outcome Measures: 3450 pregnant patients were admitted, and 381 of them due to pre-eclampsia, revealing a 11.04% prevalence.Results: Both arithmetic mean and median of maternal age were approximately 27 years. 94.25% of the participants were parda. Regarding medical history, 50.27% had chronic hypertension, and 37.23% had urinary tract infection during pregnancy. The obstetric profile revealed that 42.26% were primigravid, and 30% of the multigravid participants had already manifested pregnancy hypertension. 78.1% of the participants attended less than 6 prenatal consultations, and 10.03% used chemical substances during pregnancy. Twin pregnancy had a 3.14% prevalence. Beyond hypertension and proteinuria, scotoma was the most frequent (28.57%) clinical manifestation. 2.36% of the patients developed seizures, mostly (55.55%) before 37 weeks of pregnancy.Conclusions: The profile of the participants was mean age 27 years, parda race, with chronic hypertension, single fetus, multigravid without previous pregnancy hypertension, with less than 6 prenatal consultations, no use of chemical substances and without any manifestations of pre-eclampsia beyond hypertension and proteinuria. [ABSTRACT FROM AUTHOR]

Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Iheringia. Série Zoologia is the property of Fundacao Zoobotanica do Rio Grande do Sul and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Due to the increasing interest of the population in the sustainability theme, there was a consequent growth in publications related to the theme in the area of civil construction. Agroindustrial waste has become an environmental problem, and with that natural fibers have found space in the reuse of waste due to its characteristics and possibilities of improving the mechanical properties of its products. In order to achieve sustainable construction demand, along with the need to reuse waste, studies have begun to analyze the application of natural fibers in construction materials. The documents provided by the Web of Science (WOS) database through research carried out with the search for the terms 'Natural Fibers' and 'Building materials' restricted to the period 2010-2020 in the main WOS collection. The institutions involved with the publications, the countries of origin of the documents, the year of publication, the keywords used by the authors and the number of citations for each document were analyzed using bibliometrics in the VOSVIEWER (VOS) software. The result of the analysis shows an increase in documents related to the theme over the years, and that the countries with the most studies in the area are China (16), USA (14) and Brazil (11), respectively. The results presented after analysis of the keywords show that natural fiber (61 occurrences), mechanical properties (44 occurrences) and composites (31 occurrences) are the words with the highest occurrence among the analyzed documents. The present study shows the growth of research related to the theme, in addition to discriminating countries, institutions and authors, which allows monitoring the scientific expansion of the theme and guiding future studies. [ABSTRACT FROM AUTHOR]

Due to the great worldwide increase in pineapple production, countries like Brazil and India have problems regarding the correct disposal of residues from the production of this fruit. One of the possibilities is the reuse of these residues in the form of fibers in cementitious materials, as is the case with mortars. As a result, the objective of this work is to evaluate the application of pineapple fibers in mortars in the proportion of 1: 4 (cement: sand) with addition of fiber treated in NaOH in the proportion of 3 and 6%. The properties of mechanical resistance, water absorption, mass density and adhesion were evaluated, aiming to apply the mortar in coatings of rural environments. The results indicate that the fibers reduced the mortar density and increased the mechanical strength. However, there was a reduction in adherence, especially with the use of 6% fiber, in addition to an increase in water absorption. Based on the results, it is concluded that it is feasible to use 3% of pineapple fiber for the production of coating mortars in rural environments because the results obtained in the investigation are compatible with this application and with the established normative limits. [ABSTRACT FROM AUTHOR]

Copyright of Neotropical Biology & Conservation is the property of Pensoft Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Ciência & Saúde Coletiva is the property of Associacao Brasileira de Pos-Graduacao em Saude Coletiva and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of this study was to investigate the effects of different post space irrigation protocols for removing residual filling material from dentin walls, by using microcomputed tomography (micro-CT), and the influence of these protocols on dentin microhardness. Bovine incisors (n = 35) were filled with the single-cone technique and MTA Fillapex (Angelus, Londrina, PR, Brazil). Post space preparation (PSP) was performed 7 days after filling, using the Odous Touch electrical system (Odous De Deus Ind. e Com., Belo Horizonte, MG, Brazil), followed by post space irrigation using manual irrigation, passive ultrasonic irrigation, or Easy Clean, together with 2.5% sodium hypochlorite (NaOCl), or with 2.5% NaOCl and 17% EDTA (NaOCl/EDTA). Micro-CT scans were performed at three time points. The residual filling material was evaluated at three levels: cervical, middle and apical. The Knoop test was measured with four indentations around the canal lumen at three dentin depths: X (100 µm), Y (200 µm) and Z (400 µm). Statistical analysis was performed using ANOVA (p < 0.05). The effects of the activation method (p < 0.001), and the root level (p = 0.013), as well as the interaction between the irrigant and the activation method (p = 0.041), led to different percentages of residual filling material. Lower amounts of residual filling material were observed at the cervical versus the middle and apical levels (p < 0.05). No significant differences were observed in dentin microhardness (p > 0.05). The best removal of the residual filling material was performed using the Easy Clean tip and NaOCl/EDTA, regardless of the activation methods. [ABSTRACT FROM AUTHOR]

Copyright of Ciencia, Cuidado e Saude is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The proliferation of native, alien, invasive and domestic species offers enough novel and abundant food resources for the common vampire bat, Desmodus rotundus, to potentially alter preferences for prey. By reference to a stable-isotope analysis for carbon and nitrogen, we report here on the choices of introduced mammal prey made by D. rotundus residing on Anchieta Island — a tropical land-bridge island from which domestic animals were removed and 100 individuals of 15 mammal species were introduced intentionally. Our analysis shows that the studied individuals of D. rotundus were more likely to prey upon species of open habitats (mean value of δ13C = -14.8‰), that is, animals with high δ13C values characterising the consumption of C4 resources. The δ15N values for D. rotundus were higher than expected, most likely similar to apex predator species (mean value of 8.2‰) and overlapped the isotopic niche with capybaras (Hydrochoerus hydrochaeris) on the island. Values were in turn distant from those noted for coatis, as well as other potential prey from a preserved area on the mainland (capybaras included), indicating that, from among all the potential mammalian prey species, the studied bats were feeding exclusively on capybaras, which also represent the species with the greatest mammalian biomass on the island. Previous information regarding the time of human occupation suggests that the domestic animals then present on Anchieta Island might have been the main prey of D. rotundus and responsible for maintaining a viable population. As capybaras were introduced only 36 years ago, this suggests a rapid shift in predation preference induced by anthropogenic disturbances that have allowed D. rotundus to exploit these rodents successfully. Records in the literature further show that common vampire bats were not captured in preserved areas of the mainland close to Anchieta Island, indicating that the rate of capture characterising D. rotundus is usually low in natural forested habitats where potential prey are scattered. As three individuals of the introduced population of capybaras were confirmed to have died from bat rabies virus (RABV) in 2020, we advocate periodic monitoring for bat rabies viruses in the D. rotundus population on Anchieta Island (as well as nearby areas), so that the magnitude of the outbreak may be determined and control strategies developed. Such actions are all the more important given that both the island and nearby areas are frequented by tourists. We highlight that the prey choice indicated here is context-dependent, and possibly influenced by the removal of domestic animals, as well as the explosive population growth achieved by the introduced capybaras, in combination with the predictability of their foraging behaviour. [ABSTRACT FROM AUTHOR]

The paper presents a model for demand response of residential consumers including several alternatives for load shifting and for reduction in the electricity bill. The consumer behavior is based on time-of-use tariffs and modeled considering three goals for the end-user: (1) to reduce the electricity bill; (2) to maintain the monthly consumption; and (3) to respond to price signals without load shifting. Using real data from an electrical distribution utility operating in the south of Brazil, we present a practical application that demonstrates the main features and advantages of the proposed model in comparison with available models. [ABSTRACT FROM AUTHOR]

Precision agriculture (PA) provides techniques that favour the localized application of inputs allowing their rational use. This makes the PA a potential indicator of reduced operational costs, input volume, and environmental impacts. The objective of this study was to evaluate and compare the environmental effects of three different sampling methods used in PA for the lime application. The first sampling method evaluated was the grid sampling (GS). It was performed at a density of one sample per hectare in a 100×100 m georeferenced grid. The second method was the directed sampling, that was performed after defining the management zones by soil apparent electrical conductivity (ECa) using a soil electrical conductivity sensor. The lest sampling method was the Altitude-based management zone (AMZ) sampling that was developed based on altitude maps of the field. These sampling methods were tested in three different areas in the south of Brazil. This study evaluated the spatial variability of the lime volume in the soil and compared quantitatively and spatially the recommended application volumes achieved by each sampling method. Results highlighted that the sensor-directed soil sampling method was the alternative that would generate the lowest environmental impact. [ABSTRACT FROM AUTHOR]

The identification of the current vocational training profile of nursing aides and technicians becomes a central element in understanding the dynamics of their qualification in several states, aiming to expose both the existence of trends for under- and overqualification and the participation of the public sector in the offer and expansion of nursing courses in the country. The article explores three relevant aspects of vocational training based on the results found in the research "Nursing Profile in Brazil (FIOCRUZ/COFEN)": the level of schooling/qualification; the geographical distribution and the governmental participation in the consolidation of the current situation. This is an analytical study based on the interpretation of indicators identified by Pearson's Asymmetry Coefficient. The study uses the database generated by the research, as well as data from MEC/Inep and IBGE. The achieved results establish relations between the characteristics of training, distribution of NA&T in all Brazilian states with the phenomenon of overqualification, besides revealing an apparent separation of the Federal Education Network from the actual demand for nursing technicians in the country. [ABSTRACT FROM AUTHOR]

Copyright of Revista Brasileira em Promoção da Saúde is the property of Revista Brasileira em Promocao da Saude and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Antíteses is the property of Universidade Estadual de Londrina and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ciencia, Cuidado e Saude is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Educacao e Pesquisa is the property of Faculdade de Educacao da Universidade de Sao Paulo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Understanding the effect of planting densities and species proportions on light absorption and light use efficiency can help to improve the management of mixed-species forest plantations. Our study aimed to disentangle the role of light interception and light use efficiency (LUE) on the biomass production of Eucalyptus grandis (E), a highly productive species in tropical conditions, and Acacia mangium (A), a N 2 -fixing species, in monocultures and mixed-species plantations for contrasting planting densities. A randomized block experiment set up over 4 ha in southern Brazil was intensively monitored for 14 months at mid rotation. The absorbed photosynthetically active radiation (APAR) was simulated for each tree of the experiment using the tri-dimensional MAESPA model parameterized with detailed in situ measurements of tree and foliage. LUE for stem wood production was estimated as the ratio of measured stem biomass production (SBP) and simulated APAR. The APAR of Eucalyptus trees did not significantly differ between monocultures and mixed plantations, the reduction of Eucalyptus density being compensated by an increase in light absorption of Eucalyptus individuals. The LUE of Eucalyptus trees in monoculture and mixed-species stands was found to be comparable only at low planting densities. The replacement of Eucalyptus trees with Acacia trees resulted in a reduction in Eucalyptus LUE only at high planting density. The SBP of Eucalyptus trees was mainly explained by differences in APAR, while both APAR and LUE explained the SBP of Acacia trees. The maximum stand production was obtained with monoculture of Eucalyptus at high density and no mixture reached this productivity. Reducing the proportion of Eucalyptus in mixture lead to a substantial decrease in stand production at high planting density due to a decrease in LUE, while this stand production reduction was offset at low planting density, underlying a higher diversity effect at low planting density. In the perspective of increasing diversity in forest plantations to foster multifunctionality, mixed plantations of Acacia and Eucalyptus at low planting density can be an interesting option to maintain a relatively high productivity, which is similar to Eucalyptus monocultures at the same low planting density. • APAR, wood growth and LUE were estimated in monocultures and mixed-species plantations. • These variables were analysed in function of the species proportion and planting densities. • The maximum stand production was for Eucalyptus monoculture at highest density. • At the low tree density in a mixed-species stand, Eucalyptus had similar productivity to that in pure than Eucalyptus at low density". [ABSTRACT FROM AUTHOR]

Copyright of Boletim de Geografia is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Comunicação, Mídia e Consumo is the property of Escola Superior de Propaganda e Marketing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Coffee cultivation is of great importance to Brazilian agribusiness, as coffee occupies extensive production areas and is one of the most exported Brazilian products. To maintain coffee production numbers, productive techniques must be adopted that optimize productive system use. The objective of this work was to apply geostatistical techniques in the evaluation of soil fertility attributes to construct maps of variability in soil fertility parameters and the productivity of a coffee crop in the municipality of Monte Carmelo, Minas Gerais (MG), Brazil. The work was developed with coffee of the cultivar Mundo Novo 379/19, and 19 sample points were georeferenced in Universal Transverse Mercator coordinates. Spatial dependence of the fertility and productivity parameters was analysed via classic semivariogram fitting and interpolation by ordinary kriging using the statistical computer system, R. All parameters evaluated showed high degrees of spatial dependence. The attribute values varied along the sampling points, except for the sodium (Na) contents, which had similar values in all samplings. The studied parameters ranged from 80 to 200 metres. It is conclusion, the use of productivity maps linked to soil chemical attributes can be useful for determining the occurrence of variable productivity rates throughout the area, allowing the adoption of corrective practices for subsequent crops and thus making the maps very useful tools for producers. [ABSTRACT FROM AUTHOR]

In Brazil, diseases caused by soil-borne pathogens such as Fusarium oxysporum f. sp. passiflorae are major constraints to the yellow passion fruit crop. We report the use of the survival analysis technique to assess the resistance of Passiflora spp. to Fusarium wilt in field conditions in a coastal tableland region of Brazil. Fifty genotypes were evaluated comprising the species Passiflora edulis, P. alata, P. gibertii, P. nitida, P. setacea, P. cincinnata, and backcross [(P. edulis x P. cincinnata) x P. edulis ] and three graft combinations of P. edulis onto P. nitida , P. gibertii or P. alata. Plant growth and Fusarium wilt incidence were evaluated using 30 plants of each genotype in a completely randomized design. The highest growth speed indexes (GSI) were observed in P. cincinnata (BGP077) and P. edulis (BRS-GA) grafted onto P. gibertii (BGP008) with 12.04 and 11.96, respectively. Conversely, P. nitida (BGP390) had the lowest growth rate (4.10). Plants of P. gibertii , P. nitida and P. setacea did not present Fusarium wilt symptoms until 15 months after planting and presented the same median survival time with 466 days. Among P. edulis genotypes, Fusarium wilt incidence varied within three reaction groups, with the highest median survival time of 286 days. P. alata and P. cincinnata plants had high Fusarium wilt incidence (median survival time 250 and 252, respectively), similar to P. edulis , with 80% of symptomatic plants at 15 months after planting and median survival time of 240 days. Interspecific backcross hybrids differed from genotypes and intraspecific hybrids of P. edulis despite the similar median survival time among all of them (239–252 days). Grafting P. edulis onto wild species did not decrease Fusarium wilt incidence in relation to the most resistant group of P. edulis genotypes. • All the evaluated accessions of Passiflora edulis were susceptible to Fusarium wilt. • Different resistance levels were identified based on the mean survival time to Fusarium wilt. • Seedlings of P. gibertii , P. nitida and P. setacea rootstocks are resistant to Fusarium wilt. • Disease incidence was similar for grafted plants and the most resistant accessions of P. edulis. • Survival analysis may support the selection of resistant Passiflora genotypes to Fusarium wilt. [ABSTRACT FROM AUTHOR]