Universidade Estadual de Londrina
  • Londrina, Paraná, Brazil
Recent publications
Swine production systems contribute to emission of greenhouse gases (CO2, N2O, and CH4) and ammonia (NH3) into the atmosphere. Therefore, the objective of this study was to evaluate methods for determining the emissions of ammonia and greenhouse gases (GHG) in a commercial swine production unit with natural ventilation during the finishing phase. The concentrations of gases in the air were measured using a gas analyzer (INNOVA 1412), and the flow emission was calculated by considering the ventilation rate and the differences in gas concentration between the interior and exterior of the installation. The results showed that the emission flow obtained via the simplified method in [g per swine h⁻¹] was 2.689, 0.30, 4.39, 13.55, and 3.273 for CO2, N2O, CH4, NH3, and water vapor, respectively. The flow obtained using the continuous method in [g per swine h⁻¹] was 574, 0.67, 19.50, 5.84, and 7.2 for CO2, N2O, CH4, NH3, and water vapor, respectively. The proposed simplified method was highly accurate for estimating GHG emissions from swine production systems with natural ventilation. Key words: swine farm; methane; ammonia; environment; global warming
On March 12, 2020 the COVID-19 pandemic was confirmed and as a result, several schools around the world had to adapt their classes to the remote teaching model. The purpose of this study is to record an experience that involved teaching remote classes of Geometric Drawing (GD), Descriptive Geometry (DG) and Technical Drawing (TD) courses to undergraduate students in Civil Engineering, Graphical Design and Agronomy at the State University of Londrina (UEL). For this reason, this article address the way teaching was planned to take place in remote classes and the difficulties experienced by the teachers and students. The students completed two questionnaires in a survey, the first in 2020 and the second in 2021. Through an analysis of the answers, it was possible to evaluate the methodology employed for remote classes.
Self-handicapping strategies refer to the set of choices and attitudes adopted to minimize blame for failure and increase the value of success in achievement situations. This paper aims to describe the stages of construction and the psychometric analysis of a scale to measure the self-handicapping strategies of university students. In study 1, the major steps for the construction of the scales and initial results are reported. The internal consistency indices were acceptable and the principal component analysis revealed factors with little explanation of data variance. In study 2, data from a sample of 834 students from several undergraduate courses of different Brazilian universities were subjected to exploratory factor analysis using the minimum rank factor analysis (MRFA) method and the matrix of polychoric correlations. The parallel analysis criterion for factor retention indicated the one-factor solution as the best fit to data. The importance of having a valid and reliable measure to assess self-handicapping strategies in educational contexts and the promising use of the scale in actions to improve learning in higher education are discussed.
Resumo A pandemia de Coronavírus despertou preocupação da comunidade acadêmica com a qualidade do ar interior. A principal via de propagação da doença se dá por aerossóis, com vírus presentes em partículas que permanecem em suspensão no ar por longos períodos. Este trabalho busca compreender o papel da ventilação natural na probabilidade de contágio da doença em salas de aula. Taxas de ventilação foram calculadas por método algébrico para salas de aula em duas situações: ventilação cruzada e unilateral. Foi proposta redução da ocupação máxima das salas de aula, tanto considerando distância mínima de 2 metros entre ocupantes, quanto mantendo taxa mínima de ventilação de 27 m³/h por pessoa.A probabilidade de contágio foi calculada para as capacidades originais e reduzidas de cada sala, seguindo metodologia proposta na literatura. Cada recinto também foi classificado de acordo com seu número de trocas de ar por hora. A ventilação unilateral se mostrou insuficiente para manter taxas adequadas de ventilação em todos os casos. Para 11 das 31 salas avaliadas o distanciamento de 2 metros entre ocupantes é insuficiente para manter as taxas de ventilação adequadas.
Resumo A padronização é um princípio da gestão com vistas à redução da variabilidade no processo de produção por meio de um conjunto de regras que determinam de que maneira uma tarefa deve ser executada. No entanto, há uma convergência para a ideia de que parcelas do trabalho, não previstas nos padrões formais, emergem mediante adaptações realizadas pelos próprios operadorese são boas soluções ante os propósitos da padronização. O objetivo deste artigo é entender a natureza dessas parcelas do trabalho na construção civil e categorizá-las por meio de constructos que representem sua taxonomia. Com base na abordagem do Design Science Research, foram realizados: um estudo exploratório em uma empresa de montagem e instalação de móveis planejados, um estudo empírico (EE1) na atividade de assentamento de pisos e azulejos, e um estudo de avaliação (EE2) na montagem de formas de pilar. O estudo exploratório propiciou a caracterização inicial dessas parcelas do trabalho. No EE1, identificou-se os constructos que explicam a natureza e a taxonomia dessas parcelas do trabalho, denominadas padrões emergentes (PE). Os constructos identificados foram facilitação da ação e precaução, com seus desdobramentos, demonstrando a variedade de situações em que os PE podem ser identificados. Por fim, no EE2, foram validados os resultados.
The agronomic and physical traits of corn are fundamental for producers and industries that use this cereal as a raw material since they interfere in the industrialization processes, yield, and quality of the final products. This study aimed to evaluate the agronomic and physical traits of the grain in transgenic and conventional corn hybrids grown in the first crop season (summer) in Paraná State. Three experiments were set up in 2017/18, 2018/19, and 2019/20 crop seasons. A randomized block design with three replications was used. Eight hybrids (Supremo Vip, Supremo, P30F53VYH, P30F53, P3456H, P3456, DKB290PRO3, DKB290) were evaluated. The physical traits of grains for industrial purposes, such as grits, germ, vitreousness, flotation, and hectoliter weight, and the agronomic traits (percentage of rot grains, 1000-grain weight, and grain yield) were evaluated. The hybrids and crop seasons influence the industrial physical traits of grits and germ. The hybrids Supremo (conventional), Supremo Vip (transgenic), and P3456 (conventional) had the best results. The hybrids and crop season influenced the flotation, hectoliter weight, and vitreousness, highlighting the hybrids Supremo (conventional), Supremo Vip (transgenic), P30F53 (conventional), P30F53 VYH (transgenic), P3456 (conventional), P3456 VYH (transgenic), with the best results. The conventional hybrids showed industrial superiority compared to transgenic hybrids for grits, flotation, and vitreousness. Key words: Zea mays; grits; germ; flotation; vitreousness
Banana 'Prata' has a significant demand in the Brazilian market, and Minas Gerais is one of the largest banana producers in the country. Scientific studies that evaluate the bananas quality produced in different cultivation regions are still incipient. Thus, this study evaluated the physical, biochemical and sensory attributes of banana 'Prata' from south and north of Minas Gerais and Vale do Ribeira (SP). Bananas from south were also cultivated in different production systems, organic and conventional. Data were submitted to multivariate analysis that provided the discrimination of the samples according to the cultivation regions. Bananas from southern presented higher levels of soluble solids and acidity, better taste, higher diameter and overall acceptance, where in the organic bananas were the most preferred by consumers. Fruit from northern stood out in appearance, texture, aroma and color, in addition to greater length. Fruit from Vale do Ribeira had higher levels of total phenolics and antioxidant activity. With these results we can assume that fruit quality is highly related to the specific climatic conditions from each producing region. Bananas from the south of Minas Gerais showed superiority for most of the evaluated traits, reflecting on consumer preference.
OBJECTIVES: The transition from face-to-face to remote teaching is yet to be fully understood. In clinical training, traditional teaching must prevail because it is essential for the acquisition of skills and professionalism. However, the responses of each school to the pandemic and the decision on when to resume clerkship rotations were mixed. In this study, we aimed to analyze whether the time to resume clerkship rotations was associated with the performance of the students by using a multi-institutional Progress Test. METHODS: This is a cross-sectional study conducted at nine different Brazilian medical schools that administer the same annual Progress Test for all students. We included information from 1,470 clerkship medical students and analyzed the time of clinical training interruption as the independent variable and the student’s scores as the dependent variable. RESULTS: The comparisons of the students’ scores between the schools showed that there are differences; however, they cannot be attributed to the time the clerkship rotations were paused. The correlation between the schools’ average scores and the time to resume clerkship rotations was not significant for the fifth year (r= -0.298, p=0.436) and for the sixth year (r= -0.440, p=0.240). By using a cubic regression model, the time to resume clerkship rotations could explain 3.4% of the 5-year students’ scores (p<0.001) and 0.9% of the 6-year students, without statistical difference (p=0.085). CONCLUSIONS: The differences between the students’ scores cannot be attributed to the time when the schools paused the clerkship rotations. KEYWORDS: COVID-19. Knowledge assessment. Medical students.
Crop rotation with species diversification contributes to the control of pests, diseases and weeds and improves soil fertility and conservation, which can lead to increased profitability in grain production systems. The objectives of this study were to determine whether grain production systems that employ crop rotation with species diversification are more productive and profitable than double-cropping rotations without diversification and to analyze the revenues and production costs of these cropping systems. An experiment was conducted in a region with subtropical climate between the crop years of 2014–2015 and 2019–2020. The experiment consisted of a randomized block design with six treatments and four replicates. The treatments consisted of six grain production systems, including five rotations with varied levels of species diversification and a corn–soybean rotation without species diversification, all under no-tillage. Productivity, revenue, production cost and profit indicators were analyzed. Productivity was compared by Duncan’s test (p ≤ 0.05). The grain production systems with species diversification showed better productivity and profitability than the corn–soybean system. The profit of the systems with species diversification was on average 37% higher than that of the system with corn–soybean rotation. In summary, grain production systems that employ crop rotation with species diversification showed higher productivity and profitability than the corn–soybean rotation without species diversification.
Acetic acid bacteria (AAB) are microorganisms widely distributed in nature. Although this group is involved in the spoilage of some foods, AAB are of great industrial interest, and their functionality is still poorly understood. AAB converts ethanol, sugars, and polyols into various organic acids, aldehydes, and ketones via oxidative fermentation. These metabolites are produced during a succession of biochemical reactions in various fermented foods and beverages, such as vinegar, kombucha, water kefir, lambic beer, and cocoa. Furthermore, important products such as gluconic acid and ascorbic acid precursors can be produced industrially from their metabolism. The development of new AAB-fermented fruit drinks with healthy and functional appeal is an interesting niche for research and the food industry to explore, as it can meet the needs of a wide range of consumers. Exopolysaccharides such as levan and bacterial cellulose (BC) have unique properties, but they need to be produced on a larger scale to expand their applications in this area. This work emphasizes the importance and applications of AAB during the fermentation process of various foods, as well as the role of AAB in the development of new beverages and the numerous applications of levan and BC.
Resumo Este artigo centra-se em um tema pouco contemplado pelos historiadores do teatro brasileiro: o Conservatório Dramático Paraense. Sua fundação compôs o quadro mais amplo de criação de uma série de instituições sintonizadas às ideias de progresso, modernidade e civilização, que delegaram às elites provinciais a tarefa de disseminar as artes, o conhecimento e o ensino no Grão-Pará. A ele, foi atribuída a tarefa de impulsionar o teatro da província e administrar o Teatro da Paz, objetivos que, no entanto, não conseguiu contemplar. Acompanhar a história do Conservatório Dramático Paraense oferece uma oportunidade privilegiada para ampliar a compreensão sobre um momento em que o império brasileiro investiu em políticas ligadas à imagem nacional pela mobilização de recursos culturais, das quais a criação dos conservatórios dramáticos foi parte e também para que se tenha uma visão aproximada de como o Conservatório Dramático Paraense respondeu a elas.
Objective To propose a Permanent Health Education Model with strategies linked to the Five Disciplines framework for the development of competencies of professionals who work in direct care for women in situations of violence. Method A qualitative research carried out by the focus group technique, with professionals who are part of an intersectoral network in Curitiba-PR, from August to October 2019. Data analyzed by content analysis in the thematic modality, in the light of the theoretical framework of the Five Disciplines: personal mastery; mental model; shared vision; team learning and systems thinking. Results The Five Disciplines were evidenced in the categories, as well as strategies to be used for competence development. A diagrammatic representation was used to be covered during the learning process. Conclusion The strategies suggested by professionals who work in the care for women in situations of violence supported the proposition of a Permanent Health Education Model based on the adopted theoretical framework. Keywords: Learning health system; Competency-based education; Education, continuing; Interprofessional education; Violence against women
Objective To propose a Permanent Health Education Model with strategies linked to the Five Disciplines framework for the development of competencies of professionals who work in direct care for women in situations of violence. Method A qualitative research carried out by the focus group technique, with professionals who are part of an intersectoral network in Curitiba-PR, from August to October 2019. Data analyzed by content analysis in the thematic modality, in the light of the theoretical framework of the Five Disciplines: personal mastery; mental model; shared vision; team learning and systems thinking. Results The Five Disciplines were evidenced in the categories, as well as strategies to be used for competence development. A diagrammatic representation was used to be covered during the learning process. Conclusion The strategies suggested by professionals who work in the care for women in situations of violence supported the proposition of a Permanent Health Education Model based on the adopted theoretical framework. Keywords: Learning health system; Competency-based education; Education, continuing; Interprofessional education; Violence against women
Objective: To verify the association between a multiprofessional round with the use of checklists and patient safety practices by health professionals in an intensive care unit. Method: Mixed-method study, delineated by the sequential explanatory approach, conducted in a hospital in southern Brazil. Quantitative data were analyzed using Poisson regression, and qualitative data, using content analysis. The integrated analysis was performed through the explained/connected combination. Results: In the post-implementation period of the rounds with systematic use of the checklist, there was a significant improvement in the prophylaxis of venous thromboembolism, light sedation, reduction in the days of use of mechanical ventilation, central venous catheter and indwelling urinary catheter. Conclusion: The multiprofessional round with the systematic use of checklist, associated with the improvement in patient safety practices, was considered as a strategy that ensures better care in intensive care and favors job satisfaction.
Objective To verify the association between a multiprofessional round with the use of checklists and patient safety practices by health professionals in an intensive care unit. Method Mixed-method study, delineated by the sequential explanatory approach, conducted in a hospital in southern Brazil. Quantitative data were analyzed using Poisson regression, and qualitative data, using content analysis. The integrated analysis was performed through the explained/connected combination. Results In the post-implementation period of the rounds with systematic use of the checklist, there was a significant improvement in the prophylaxis of venous thromboembolism, light sedation, reduction in the days of use of mechanical ventilation, central venous catheter and indwelling urinary catheter. Conclusion The multiprofessional round with the systematic use of checklist, associated with the improvement in patient safety practices, was considered as a strategy that ensures better care in intensive care and favors job satisfaction. Keywords Checklist; Teaching rounds; Intensive care units; Patient safety; Patient care team
Objective: This study aimed to investigate the effect of dorsal cranial myopathy (DCM) on chicken meat quality. Methods: Sixty-six Ross 308 AP broilers, 47 days old, of both sexes, weighing about 3.51 kg, were slaughtered according to standard industrial practices, and evaluated for meat color, pH, chemical composition, collagen content, fatty acid profile, and histopathological parameters. Comparisons between normal and DCM-affected meat were performed using Student's t-test at the 5% significance level. Results: Histological analysis of muscle tissues affected by DCM showed myofiber degeneration, proliferation of inflammatory cells, fibroplasia, and necrosis with fibrosis. DCM samples had lower protein content and higher moisture, ash, insoluble collagen, total collagen, and pH. DCM-affected meat was redder and more yellowish. There were no differences in lipid or soluble collagen contents between groups. DCM-affected meat had higher percentages of arachidonic acid (C20:4n-6) and eicosapentaenoic acid (C20:5n-3). Conclusion: This study revealed that DCM-affected meat exhibits considerable changes in quality parameters.
The phytonematode Aphelenchoides besseyi gained prominence in Brazil following its identification as the etiological agent of leaf and green stem retention in soybean plants. Thus, this study evaluated the effects of nutrient omission on the phytotechnical characteristics of soybean in the presence and absence of A. besseyi. The experiments were carried out in a completely randomized 2 × 11 factorial arrangement, with 11 treatments: control (no nutrients), complete nutrition, and individual -N, -P, -K, -S, -B, -Cu, -Fe, -Mn, and -Zn omission were applied to inoculated and uninoculated plants, and six replicates. The presence of A. besseyi adversely affected the growth characteristics, except when -P, -S, -B, -Mn, and -Zn were omitted. The nematode reduced the root length in treatments omitting -K, -S, -B, -Cu, -Fe, -Mn, and -Zn and root fresh weight when -N, -P, -K, and -Cu were omitted. In the absence of the pathogen, N assimilation did not differ significantly between the treatments; however, it was negatively influenced by the presence of the pathogen in the control and complete nutrition treatment. The leaf area index values were the lowest in inoculated plants with no nutrition, with complete nutrition, and with -N, -P, -K, and -Cu omissions. The micro- and macronutrients concentration and the shoot dry weight (SDW) were high in the presence of the nematode, except in treatments where -N, -S, and -Mn were omitted. The nutritional status does not affect infection by the nematode A. besseyi, but the application of nutrients is necessary for soybean development.
Introduction Spinal cord injury (SCI) radically changes a person’s life because of alterations in body dynamics, leading to disabilities and reduced functionality. Objective To analyze the functional independence of individuals with spinal cord injury and compare the groups. Methods Individuals with SCI were interviewed about their functional independence using the Brazilian version of the Spinal Cord Independence Measure - Self-Reported Version (brSCIM-SR) and later their respective domains and subdomains were compared between diagnostic groups, time since injury and sex. Results The sample consisted of fifty individuals aged 40.92 ± 13.93 years, predominantly men and diagnosed with paraplegia. In most brSCIM-SR domains, all respondents achieved good independence in self-care, respiration and sphincter management, and in the total brSCIM-SR, except for mobility. In paraplegia, chronic SCIs and both sexes achieved excellent independence in most subdomains and in the total. Significantly low values were found for tetraplegia and recent SCI in the self-care subdomain. In most subdomains, tetraplegia reached significantly lower values. In the subdomains of respiration and sphincter management, the participants were independent in the breathing function, but in tetraplegia, they showed significant dependence on transfer to the toilet. In terms of mobility, there was great dependence on the items going up and down stairs and transfer from the floor to the wheelchair. Conclusion The brSCIM-SR measures the degree of functionality, allowing health professionals and the patient to quantify and locate the items that indicate their deficits or gains during the rehabilitation process. Here, individuals with SCI showed good functional independence, with worse performance in the tetraplegia and recent injury groups: however, mobility showed partial dependence in the participants.
Resumo Introdução A lesão da medula espinal (LME) muda radicalmente a vida da pessoa devido às alterações na dinâmica corporal, levando à incapacidades e redução da funcionalidade. Objetivo Analisar a independência funcional de indivíduos com LME e comparar os grupos. Métodos Indivíduos com LME foram entrevistados sobre sua independência funcional por meio da versão brasileira do Spinal Cord Independence Measure - Self-Reported Version (brSCIM-SR) e posteriormente seus respectivos domínios e subdomínios foram comparados entre os grupos diagnósticos, tempo de lesão e gênero. Resultados A amostra foi composta por 50 indivíduos com idade de 40,92 ± 13,93 anos, prevalecendo homens e diagnóstico de paraplegia. Na maioria dos domínios do brSCIM-SR todos os entrevistados atingiram boa independência no autocuidado, na respiração e controle esfincteriano e no total do brSCIM-SR, exceto na mobilidade. Na paraplegia, as LMEs crônicas e ambos os sexos alcançaram excelente independência na maioria dos subdomínios e no total do instrumento. Valores significantemente baixos foram encontrados na tetraplegia e nas LMEs recentes no subdomínio autocuidado. Na maioria dos subdomínios, a tetraplegia atingiu valores significativamente inferiores. Nos subdomínios da respiração e controle esfincteriano, os participantes eram independentes na função respiração, mas nas tetraplegias apresentaram significativa depen-dência nas transferências para o vaso sanitário. Na mobilidade houve grande dependência nos itens subir e descer escadas e transferir-se do chão para a cadeira de rodas. Conclusão Os indivíduos com LME demonstra-ram boa independência funcional, com pior desempenho na tetraplegia e lesões recentes, mas a mobilidade apresentou parcial dependência nos participantes.
Institution pages aggregate content on ResearchGate related to an institution. The members listed on this page have self-identified as being affiliated with this institution. Publications listed on this page were identified by our algorithms as relating to this institution. This page was not created or approved by the institution. If you represent an institution and have questions about these pages or wish to report inaccurate content, you can contact us here.
3,779 members
Andre Luiz Martinez Oliveira
  • Departamento de Bioquímica e Biotecnologia (DBBTEC)
Rubens Cecchini
  • Department of General Pathology
Claudia Bueno dos Reis Martinez
  • Departamento de Ciências Fisiológicas (CIF)
Marcia Regina Gabardo Camara
  • Departamento de Economia
Ligia Fonseca
  • Departamento de Enfermagem
Information
Address
Rodovia Celso Garcia Cid - PR 445 - Km 380, 86057970, Londrina, Paraná, Brazil
Website
www.uel.br
Phone
55-43-33714417