Showing papers by "Federal University of Roraima published in 2019"

Wild vertebrates and their representation by urban/rural students in a region of northeast Brazil

Abstract: Recognition of the diversity of living beings, including the classification and naming of species, is a fundamental condition for biological literacy with the aim of developing critical awareness of human relationships with nature, and for which formal education plays an important role. The present study aimed to analyze the representation that urban/rural students have for wild vertebrates and their main sources of knowledge. Data collection took place in three public schools, one urban and two rural, in the municipality of Campina Grande, Paraiba, Brazil. Questionnaires were given to 990 students (528 urban and 462 rural), distributed among all the grades that comprise middle school (Ensino Fundamental II, grades 6–9) and high school (Ensino Medio, grades 10–12) education. A total of 5877 citations were mentioned by the students, which corresponded to 224 distinct animals with 166 (72.0%) being wild vertebrates, 24 (25.7%) being domestic vertebrates, and 34 (2.3%) being invertebrates. Mammals and reptiles had the greatest observed richness of citations, while mammals (H′ = 3.37), birds (H′ = 2.84), and invertebrates (H′ = 2.94) had the greatest diversity. Positive correlations were found between citations of wild vertebrates and family income (rt = 0.06; P < 0.05) and curricular development (rs = 0.08; P < 0.01); negative correlations were found between curricular development and citations of domestic animals (rs = − 0.22; rs = − 0.11 P < 0.01) and between age group and citations of invertebrates (r = − 0.14; rs = − 0.11 P < 0.01). As for the sources of knowledge regarding the animals indicated by the students, “media,” “daily experiences,” “tradition” (here understood as knowledge resulting from interactions with parents and experienced community members), and “formal education” stood out. Comprehension of vertebrate diversity is a fundamental condition for the development of attitudes compatible with its conservation, which emphasizes the importance of biological literacy in achieving this purpose.

Allometric models to estimate tree height in northern Amazonian ecotone forests

Abstract: Modelos alometricos que definem o relacionamento entre diâmetro do tronco e a altura total da arvore na bacia amazonica sao importantes porque refinam as estimativas de fluxo e estoques de carbono arboreo na regiao. Este estudo testou diferentes modelos alometricos para estimar a altura total de arvores a partir do diâmetro do tronco em uma zona de ecotono entre florestas ombrofilas e sazonais no estado de Roraima, norte da Amazonia. Diâmetro do tronco e altura total foram medidos de forma direta em 65 arvores tombadas recentemente (vivas e mortas). Regressoes linear e nao-linear foram testadas para representar a relacao D:H nesta zona especifica de ecotono. Os criterios de selecao dos modelos foram o erro padrao da estimativa (Syx), o coeficiente de determinacao ajustado (R²adj) e o Criterio de Informacao de Akaike (AIC). A analise dos residuos dos modelos nao-lineares mais parcimoniosos mostrou uma tendencia de superestimar a altura total para arvores entre 20-40 cm de diâmetro do tronco. A aplicacao do modelo melhor ajustado (Michaelis-Menten) indicou que equacoes gerais publicadas previamente para os tropicos que usam diâmetro como variavel independente podem superestimar em 10-29% (modelos Weibull) ou subestimar em 8% (modelos baseados no clima) a altura das arvores na area de estudo. Nos concluimos que o modelo de melhor ajuste pode ser usado nas florestas ecotonais estudadas em Roraima, porque ele reflete realisticamente o relacionamento biometrico local entre diâmetro do tronco e altura total da arvore. E necessario expandir os estudos para outras areas perifericas do norte da Amazonia, com o intuito de reduzir as incertezas em estimativas de biomassa e carbono arboreo que adotem altura da arvore como uma variavel em modelos gerais.

Evaluation of emerging infectious disease and the importance of SINAN for epidemiological surveillance of Venezuelans immigrants in Brazil.

Abstract: Background: Following socio-economic turmoil in Venezuela, millions of the Venezuelan people are migrating to the neighboring Latin American countries including Brazil. Besides the social and economic burden of these migrants, Brazil must manage the health-related issues arising as consequence of these Venezuelan migrants.Poor health services in Venezuela along with unhygienic travelling conditions, lack of food (malnutrition) and potable water, unhealthy and overcrowded refugee camps or shelters, poor availability of medical services have made the migrant Venezuelan population susceptible to various diseases, especially infectious diseases.SINAN system is a health-related system in Brazil that keeps track of different health occurrences in the society and allows health care workers and policymakers free access to these data. Objectives: To evaluate the emergence of infectious diseases as a consequence of the arrival of Venezuelans immigrants in Brazil and to assess the importance of SINAN for epidemiological surveillance. Methods: Observational retrospective study. Data were collected from the SINAN system between 2015 and 2017 and was analyzed using descriptive statistics, and Mann-Whitney test (using SPSS tool version 12). Evaluated infectious diseases in this study were tuberculosis, sexually transmitted infections (STIs), HIV/AIDS, syphilis, viral hepatitis, leishmaniasis, and malaria. Results: STIs were the most commonly reported diseases. Compared to Brazilians, Venezuelan migrants reported significantly higher number of HIV/Aids (p < 0.046) and leishmaniasis cases (p < 0.049), while Brazilians reported significantly higher number of hepatitis cases (p < 0.046). Malaria was also more prevalent among Venezuelan migrants than native Brazilians. Conclusion: Increased incidence of infectious diseases among the migrant population should be considered seriously as lack of adequate control of these diseases might lead to outbreaks.

Insecticidal activity of essential oils in controlling fall armyworm, Spodoptera frugiperda

Abstract: Fall armyworm, Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) is one of the main pests in maize crop with developing resistance to chemical products and Bt technology. Therefore, alternative control methods such as essential oils are important steps in the implementation management strategies for this pest. This study aimed to evaluate the efficiency of essential oils (EOs) of Corymbia citriodora, Myrciaria dubia (Myrtaceae), Lippia microphylla (Verbenaceae) and Piper umbelattum (Piperaceae) in controlling S. frugiperda. The OEs were extracted and mortality tests were conducted with topic and volatile applications, in 30 second-instar caterpillars originated from insect rearing and artificial diet. As a control, we conducted tests with distilled water and acetone. EOs that provided mortality rates above 80% were submitted to chemical analysis for constituent identification. The efficient EOs were only those of C. citriodora and L. microphylla. For EO of C. citriodora, the LD80 was 7.06 ± 0.73 mg.g-1 in topical application and 5.85 ± 0.75 µL via volatile application. On the other hand, for EO of L. microphylla, DL80 was 9.95 ± 1.25 mg.g-1 in topical application and 18.56 ± 3.55 µL via volatile application. Chemical analysis showed that the main constituents were citronella for the EO of C. citriodora and (E)-caryophyllene and (E)-nerolidol to the EO of L. microphylla. EOs of C. citriodora and L. microphylla are promising for controlling S. frugiperda, with emphasis on the volatile effect of C. citriodora oil.

Different formulations of camu-camu popsicle: characterization, vitamin C and sensorial analysis of an opportunity to family agroindustry

Abstract: The high levels of vitamin C in camu-camu have stimulated the interests of extractivists, farmers and consumers. The aim of this study was to characterize five accessible for family agroindustry different formulations of camu-camu popsicles and assess their acceptance. A completely randomized design was used and the treatments consisted of five different popsicle formulations: camu-camu pulp (T1 and T2: 27%, T3 and T4: 20.8%; T5: 61%), water (T1 and T2: 43.5%, T3 and T4: 20.8%; T5: no water), whole milk powder (T1 and T2: 14.7%, T3 and T4: 29.2%; T5: 18.3%), sugar (T1 and T2: 14.7%, T3 and T4: 29% and T5: 20.6%), neutral alloy and emulsifier. The formulations were processed and the popsicles were evaluated for pH, soluble solids, titratable acidity, vitamin C, acceptability index (SS/TA) and macro and micro nutrients were identified. In the sensorial analysis, the popsicles were evaluated for appearance, color, flavor, texture and purchase intent by 40 untrained tasters. The acceptance of the camu-camu popsicles was lower when the formulation was more diluted. Formulations T3, T4 and T5 showed the most wanted qualitative attributes and these preparations received top scores in the sensory analysis.

Life table parameters of the red palm mite Raoiella indica (Acari: Tenuipalpidae) at various temperatures and for sexual and asexual reproduction

Abstract: The red palm mite, Raoiella indica Hirst, is a threat to coconut, banana and native Arecaceae and Heliconiaceae in Brazil. This mite originated in the Eastern Hemisphere and was first reported in 2004 in the Americas, where the pest is spreading quickly and causing severe damage to its host plants. The objective of this work was to determine the life-history parameters of R. indica at constant temperatures, estimate its thermal requirements [threshold temperature (Tb) and thermal constant (K)] and also compare its life table parameters between sexual reproduction and parthenogenesis. The life tables were constructed on leaflets of Adonidia merrillii at 15, 20, 24, 27, 30 and 34 °C and 65% RH and a 12-h photoperiod. The longevity and the number of laid eggs of non-copulated adult females were evaluated at 27 °C. Raoiella indica had complete development, from egg to adult, only at 20, 24, 27 and 30 °C. At 15 °C, the eggs did not hatch, and at 34 °C, the mites survived only until the larval stage. For sexual reproduction, the optimal temperature was 27 °C, under which the reproductive parameters were higher. The reproductive parameters for sexual reproduction were higher than those for parthenogenesis. The Tb was 14.79 °C, and the thermal constant was 208.33 degree days. The life parameters estimated in this study can be used for modelling and predicting the population growth of R. indica in the field and consequently for improving their management strategies.

Thielaviopsis ethacetica the etiological agent of sugarcane pineapple sett rot disease in Brazil

Abstract: Sugarcane pineapple rot is an important sugarcane stem disease that also affects germination and sprouting. In Brazil, the disease is caused by Thielaviopsis paradoxa sensu lato which has been split into at least five distinctive phylogenetic and biological species in the reinstated genus Thielaviopsis. In this study, three purported strains of T. paradoxa s. lat. isolated from sugarcane stems were characterized and compared with a strain from pineapple fruit, using morphology, DNA sequence analyses and sexual compatibility tests. Inoculations were also performed on asymptomatic stems of plants to assess the pathogenicity of the four fungal strains on sugarcane. Based on results of the phylogenetic analyses of combined ITS and TEF-1a gene sequences, the strains were identified as T. ethacetica. This was also supported by sexual compatibility tests, as crossings between the pineapple strain and some sugarcane strains resulted in the formation of perithecia exuding ascospore masses at their apices. The inoculation test on sugarcane resulted in stem rot and in reduced germination of buds. Thielaviopsis ethacetica is thus the species causing pineapple sett rot disease in Brazil.

Formação do educador musical: contribuições de uma abordagem (auto)biográfica

Abstract: When thinking about the possibilities of working as a Music Teacher, basic education presents itself as a path of challenges and wide horizons for teacher training. In the face of new public policies and curricular guidelines, it is urgent to promote the debate about the musical educator’s formation in regard to their own educational trajectory with music that, in most cases, did not occur in basic education. Thus, the article aims to problematize the results of a research, pointing out the possibilities of a theoretical-methodological (auto)biographical approach for the education of music teachers who are aware of the implications of their experiences with music and its teaching in pedagogical practice in basic education. The discussion informs the debates on Music Education in the scope of the study on music teachers and in the possibilities of continuous training, as well as in what refers to these professionals’ initial formation.

Acinetobacter baumannii infections in Amazon Region driven by extensively drug resistant international clones, 2016-2018.

Abstract: BACKGROUND Acinetobacter baumannii is a leading cause of nosocomial infections. This species is characterised by the presence of pandemic lineages (International Clones) that present a broad antimicrobial resistance profile. OBJECTIVE To perform the molecular epidemiology of carbapenem-resistant A. baumannii from a clinical setting in the Amazon Basin, and to characterise their antimicrobial resistance determinants. METHODS The genetic relationship of carbapenem-resistant A. baumannii were assessed by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). Class A, B and D β-lactamase genes were screened by polymerase chain reaction (PCR) and sequencing. The antimicrobial susceptibility profile was obtained by Disc-diffusion method and minimum inhibitory concentration (MIC) determination. FINDINGS All carbapenem-resistant A. baumannii strains belonged to three international clones, IC-1, IC-5 and IC-6, the latter recently reported by the first time in Brazil. The major determinant of carbapenem resistance in IC-1 and IC-5 strains was bla OXA-23, associated with ISAba1 and ISAba3, respectively, while IC-6 harboured the bla OXA-72. CONCLUSIONS The A. baumannii epidemiology in Brazilian Amazon Region was unknown. It was demonstrated that A. baumannii XDR international clones were responsible for nosocomial infections in Boa Vista during 2016-2018, revealing that the epidemiological scenario of A. baumannii infections in Amazon Region resembles those from the cosmopolitan regions worldwide.

Characterization of bacterial endophytes from the roots of native and cultivated Brazil nut trees (Bertholletia excelsa)

Abstract: Brazil nut is a very important nontimber forest product in the Amazon region. Propagation of this tree still represents a challenge due to slow and uneven seed germination. In this context, plant growth-promoting bacteria can facilitate the process of propagation. The aims of this study were to isolate and characterize endophytic bacteria from the roots of Brazil nut trees in native terra firme forest and cultivation areas in northern Brazil, and to identify mechanisms by which bacteria act in plant growth promotion. Overall, 90 bacterial isolates were obtained from the roots of Brazil nut trees in monoculture, agroforestry and native forest areas by using different semisolid media. The isolates were characterized by sequencing the 16S rRNA gene. Plant growth-promoting characteristics were evaluated by the presence of the nifH gene, aluminum phosphate solubilization and the production of indole compounds. The isolates were affiliated with 18 genera belonging to 5 different classes (α-Proteobacteria, β-Proteobacteria, γ-Proteobacteria, Bacilli and Actinobacteria). The genus Bacillus was predominant in the forest and monoculture areas. Fourteen isolates presented the nifH gene. Most of the bacteria were able to solubilize aluminum phosphate and synthetize indole compounds. The results indicated high diversity of endophytic bacteria present among the roots of Brazil nut trees, mainly in the agroforestry area, which could be related to soil attributes. Among the 90 isolates, the 22 that presented the best results regarding plant growth promotion traits were good candidates for testing in seedling production of Brazil nut trees.

Conhecimento dos pacientes diabéticos usuários do Sistema Único de Saúde acerca da retinopatia diabética

Abstract: Resumo Objetivo: Avaliar o nivel de conhecimento dos pacientes diabeticos, atendidos no Sistema Unico de Saude (SUS) na cidade de Boa Vista/Roraima, acerca da Retinopatia Diabetica (RD). Metodos: Trata-se de um estudo transversal, descritivo, de carater quantitativo, realizado atraves da aplicacao de um questionario semi-estruturado para 150 individuos diabeticos, usuarios do SUS, da cidade de Boa Vista - RR, durante o ano de 2017. As analises estatisticas foram realizadas utilizando os programas Microsoft Excel e EpiInfo 7®, fixando-se o nivel de 5% para a rejeicao da hipotese de nulidade. Resultados: Do total amostral pesquisado,76,7% dos individuos nao possuia nenhum conhecimento sobre a RD, 19,3% tinha algum tipo de conhecimento, mas nao possuia a patologia, 2,7% conhecia, possuia a RD e fazia tratamento e 1,3% conhecia, possuia a RD e nao se tratava. Quanto a orientacao, 40,6% dos participantes nunca recebeu nenhuma informacao sobre o risco de perda da visao. Acerca do tipo de Diabetes, 44,7% dos participantes nao sabia que tipo possuia, 42% relatou ter DM 2 e 13,3% DM1. Sobre o controle da glicose, 59,4% nao conseguia mante-lo. Foi evidenciada associacao entre o controle da glicose e o conhecimento sobre RD, entre o tempo de instalacao da DM e o conhecimento sobre RD e entre ter consultado um oftalmologista e conhecer sobre a RD. Conclusao: O nivel de conhecimento sobre a RD e muito baixo, fator preocupante por tratar-se de uma das complicacoes mais importantes do Diabetes. Percebe-se que o sistema de saude nao esta sendo eficiente como facilitador deste conhecimento.

Influence of diurnal variation in the chemical composition and bioactivities of the essential oil from fresh and dried leaves of Lantana camara

Abstract: Lantana camara species is generally seen only as a detriment to plantations but it also possess medicinal potential. This work aimed to analyse the essential oil (EO) yield and chemical com...

Foliar anatomy of Rhynchosia spp. (Leguminosae, Papilionoideae) from Roraima state, northern Brazilian Amazon

Abstract: Comparative studies on the structure of foliar anatomy in four species of Rhynchosia from Roraima state (northern Brazilian Amazon) were carried out to identify additional morphological characters to support the definition of the systematic boundaries among the species. Fully expanded leaves, including the petioles, were collected from the upper nodes of a plant’s stem. Anatomical characters were observed in cross-sections of the middle portion of leaflets and petiole segments. Presence and distribution of glandular trichomes, continuity of sclerenchyma around the vascular bundles in leaflet blades and the conformation of the area between the two ridges of petioles were important characters to distinguish among the species of Rhynchosia. For the first time we report a distinct multicellular gland-like structure which we found in the petioles of three species.

Referenciais epistemológicos das pesquisas sobre saberes docentes dos professores de física

Abstract: Este trabalho apresenta o resultado de um estudo exploratorio sobre as pesquisas realizadas abordando a tematica dos saberes docentes dos professores de Fisica e teve como objetivo geral fazer um levantamento das correntes epistemologicas que guiaram tais pesquisas. O estudo se deu por meio da analise de artigos publicados em periodicos brasileiros e estrangeiros e de teses defendidas em programas de doutoramento no Brasil, no periodo compreendido entre 2007 e 2017. O levantamento foi realizado em publicacoes classificadas como Qualis A1 ou A2 pela CAPES. Em linhas gerais obtivemos que 51% das pesquisas analisadas nao faz mencao direta a epistemologia a qual se filia, 33 % adota a Epistemologia da Pratica, de Maurice Tardif e 15% adotam outras epistemologias. Constatamos, tambem, uma supremacia no numero de artigos brasileiros em comparacao aos estrangeiros.

Dimensões de bulbo molhado em sistema de irrigação por gotejamento em área cultivada com ateiras

Abstract: DIMENSÕES DE BULBO MOLHADO EM SISTEMA DE IRRIGAÇÃO POR GOTEJAMENTO EM ÁREA CULTIVADA COM ATEIRAS1 WELLINGTON FARIAS ARAÚJO2; RAFAEL JORGE DO PRADO3;DANIEL LUCAS LIMA TAVEIRA4; RAPHAEL HENRIQUE DA SILVA SIQUEIRA5; EDVAN ALVES CHAGAS6 E SILVESTRE LOPES DA NÓBREGA7 1 Extraído da tese de doutorado do segundo autor; 2 Eng. Agrônomo, Professor Titular da Universidade Federal de Roraima (UFRR), Av. Ene Garcez, 2413 – Bairro Aeroporto, CEP: 69310-000, Boa Vista , RR, Brasil, e-mail: wellington.araujo@ufrr.br; 3 Eng. Agrônomo, Professor Adjunto da Escola Agrotécnica (EAgro) da UFRR e CODAI/UFRPE, BR 174, km37, S/N, PA Nova Amazônia, CEP: 69300-000, Campus Murupu, Boa Vista, RR, Brasil, e-mail: rafael.prado@ufrr.br; 4 Graduando em Agronomia/UFRR, Bolsista de IC, Av. Ene Garcez, 2413 – Bairro Aeroporto, CEP: 69310-000, Boa Vista, RR, Brasil, e-mail: lucas-agr@hotmail.com; 5Eng. Agrônomo, Professor do Instituto Federal de Roraima (IFRR), Rua Fernão Dias Paes Leme, n°11, bairro Calungá, CEP: 69303-220, Boa Vista, RR, e-mail: raphael_manejosolo@hotmail.com; 6 Eng. Agrônomo, Pesquisador da Embrapa/Roraima, BR 174, km8, Distrito Industrial, CEP: 69301-970, Boa Vista, RR, e-mail: edvan.chagas@embrapa.br; 7 Eng. Civil, Professor Adjunto da UFRR, Av. Ene Garcez, 2413 – Bairro Aeroporto, CEP: 69310-000, Boa Vista , RR, e-mail: silvestre.lopes@ufrr.br. 1 RESUMO O estudo do bulbo molhado é recomendado como parte do manejo da água e no dimensionamento de sistemas de irrigação por gotejamento. A pesquisa teve como objetivo avaliar a formação do bulbo molhado, em solo de textura média sob irrigação por gotejamento superficial, na condição inicial de solo seco, em área cultivada com ateiras (Annona squamosa L.) no estado de Roraima. As ateiras foram plantadas num espaçamento de 3 x 5m e irrigadas por gotejamento, por emissores com vazão nominal de 2,0 L h-1 (100 kPa) e espaçados 50cm entre si. O delineamento experimental foi inteiramente casualizado com quatro tratamentos, dados pelos tempos de irrigação (0,5; 1; 1,5 e 2 horas), com quatro repetições. As variáveis analisadas foram diâmetro superficial, diâmetro máximo e profundidade máxima, no método da trincheira. O tempo de aplicação apresentou efeito significativo sobre o diâmetro superficial, diâmetro máximo e a profundidade máxima, obtendo-se equações representativas do fenômeno. O percentual de área molhada mostrou-se inadequado para as plantas, nas condições estudadas. Palavras-chave: relação solo-água-planta, tempo de irrigação, percentual de área molhada (PAM). ARAÚJO, W.F.; PRADO, R.J.; TAVEIRA, D.L.L.; SIQUEIRA, R.H.S.; CHAGAS, E.A.; NÓBREGA, S.L. DIMENSIONS OF WETED BULB IN DRIP IRRIGATION SYSTEM IN AN AREA CULTIVATED WITH SUGAR APPLES 2 ABSTRACT The study of the wet bulb is recommended as part of water management and in the design of drip irrigation systems. The research had the objective of evaluating the dimensions of the wet bulb in soil of medium texture, under irrigation by surface drip, in the initial condition of dry soil, in an area cultivated with sugar apples (Annona squamosa L.) in the state of Roraima. The trees were planted in 3 x 5m spacing and drip irrigated, whose emitters had a nominal flow of 2.0 L h-1 (100 kPa) and spaced 50cm apart. The experimental design was completely randomized with four treatments, given by the irrigation times (0.5, 1, 1.5 and 2 hours), with four replications. The analyzed variables were surface diameter, maximum diameter and maximum depth, in the trench method. The application time had a significant effect on the surface diameter, larger diameter and the maximum depth, obtaining equations representative of the phenomenon. The percentage of wet area was unsuitable for the plants, under the studied conditions. Keywords: drip irrigation, irrigation time, wetted area percentage (WAP), Annona squamosa L.

Mobilidade humana e trabalho

Abstract: O presente artigo visa compreender o processamento da mobilidade humana laboral de brasileiros, em busca de trabalho que transcorre na fronteira do Brasil com a Republica Cooperativista da Guiana, na cidade brasileira de Bonfim, em Roraima, com a cidade de Lethem, na Guiana. Nesse contexto, este estudo demonstra como se concretiza a ocorrencia da mobilidade humana e a ordenacao do universo do trabalho no contexto da globalizacao da economia, proporcionando um maior entendimento acerca desta tematica de natureza multidisciplinar, com perspectivas distintas, dispondo conceitos capazes de dar atencao a complexidade desse fenomeno migratorio que ocorre nessa transfronteira, enfatizando as relacoes cotidianas da populacao dessa regiao, por meio do enlacamento dessas comunidades translocais, bem como das transformacoes que ocorrem nesse espaco e que tem proporcionado mudancas de natureza economica, cultural, politica e social para os migrantes fronteiricos.

Uso de biofertilizantes en el desarrollo vegetativo y productivo de plantas de camu-camu en Ucayali, Perú

Abstract: RESUMEN Para aumentar la calidad y el rendimiento de frutos en plantaciones de camu-camu, actualmente se viene buscando alternativas de produccion organica. En ese sentido, el presente trabajo tuvo por objetivo determinar el efecto de diferentes biofertilizantes en el desarrollo vegetativo y productivo de plantas de camu-camu. Para ello, fue conducido un experimento mediante un diseno de bloques completamente al azar (DBCA) en esquema factorial (5Bx5C), con cuatro repeticiones y una planta por unida experimental. El primer factor (B) estuvo constituido por 5 tipos de biofertilizantes: B1) vacaza (estiercol de vaca), B2) gallinaza (estiercol de gallina de postura), B3) guano de isla (estiercol de aves de mar), B4) pollinaza (estiercol de pollo) y B5) sedimentos de rio, y el segundo factor (C) por cinco concentraciones de biofertilizante: C1) 0, C2) 2, C3) 4, C4) 6 y C5) 8%. Despues de 210 dias, fue verificado que, el biofertilizante guano de isla estimulo mayor emision de brotes nuevos (1773,73) y el biofertilizante vacaza presento los mejores resultados de botones florales, numero de frutos de cosecha y rendimiento de frutos (t ha-1) con 4611,67; 2926,85 y 28,8 en las dosis 6; 8 y 8%, respectivamente. Se concluye que, el biofertilizante vacaza (VA) incremento la calidad y el rendimiento de frutos de camu-camu en suelos de restinga. Asi tambien, el biofertilizante guano de isla (GI) fue el segundo en presentar los mejores resultados, sin embargo, el alto contenido de N retardo el desarrollo normal de las fases fenologicas.

Indigenous health and nursing in Roraima in the 1970s.

Abstract: Objective: To analyze the strategies undertaken by the government to address the health problem in Boa Vista/Roraima. Method: A study using the microhistory approach, with documentary sources from journalistic material of the 1970s through the triangulation technique: texts, images and context, with analysis from the perspective of the Social World Theory. Results: It was evidenced that the strategies undertaken by the government occurred in favor of the exploration of isolated areas in Roraima that demanded settlement processes, construction of villages and a highway to enable the interconnection of the state with other regions of Brazil, with a smoke screen symbolic effect produced by nurses on indigenous health. Conclusion: There was governmental manipulation, when the symbolic power was unveiled, making it possible to see and believe that nursing needs to guide political issues rather than being ruled.

Metodologias ativas no ensino de física: um panorama da pesquisa stricto sensu brasileira

Abstract: This paper presents an exploratory study whose main objective was to draw an overview of the strict sense research carried out in Brazil, addressing the use of active methodologies in the teaching of physics, from 2009 to 2019. To achieve this objective we analyzed theses and dissertations available in the collection of the Biblioteca Digital Brasileira de Teses e Dissertacoes - BDTD. The choice for this platform is justified by its breadth. By defining the descriptors "active methodologies" AND "Physics", related by the Boolean operator "AND" and adopting as exclusion criteria the non-belonging to the area of ​​Physics, we identified twenty-six works. After analyzing the selected material, it was possible to detect a sharp growth in the number of these researches in recent years, most of them composed by dissertations from professional master’s programs. Almost all the work was carried out in public institutions and addressed the use of active methodologies at all levels of education, most of them directed to high school. We also found that there is a predominance of the use of Peer Instruction methodology. Another fact that deserves attention is the concentration of research in the Southeast and South regions from Brazil.

Phenological study of sugar apple (Annona squamosa L.) in dystrophic yellow latosol under the savanna conditions of Roraima.

Abstract: Sugar apple ('Annona squamosa' L.) is a commercially significant fruit species due to its nutritional qualities. The state of Roraima has excellent soil and climatic conditions for the cultivation of the species. However, no studies on the phenological behavior of this plant have been reported in the literature. In this context, the objective of this work was to investigate the vegetative and reproductive phenological behavior of sugar apple under the savanna conditions of the state of Roraima. The experiment was carried out in four seasons of the year (2014/2014 and 2015/2015 rainy season and 2014/2015 and 2015/2016 Summer). Production pruning was carried out in February 2014 (2014.1 cycle), September 2014 (2014.2 cycle), February 2015 (2015.1 cycle) and September 2015 (2015.2 cycle). Forty plants were monitored during the experiment and evaluated every three days for the following variables: beginning date of bud swelling; duration of flowering; and fruit harvest time. From the observed data, the periods (days) between each phenological stage were calculated: pruning/bud swelling; pruning/beginning of flowering; bud swelling/anthesis; pruning/anthesis; anthesis/beginning of fruit harvest; duration of fruit harvest, and crop cycle (production pruning/harvest). The duration of the cycle, from the production pruning to the harvest varied according to the productive period, recording 146 days for the 2014.1 cycle and 127 days for the 2014.2 cycle, which proves that the phenological behavior of the species is influenced by climatic conditions.

Continuing education of physical education teachers in inclusive educational context

Abstract: To think about disability, also consists in going back to the Adapted Physical Education’s history. The Adapted Physical Education officially arose at Universities through the 3/87 Resolution of the Education Federal Council, and was considered a milestone for professional qualification in the field, in Brazil. In this sense, we aim to identity the access that Sports teachers have to Adapted Physical Education continuing education through academic curriculum analyses. Our results showed that the knowledge of lack of professional qualification is highly associated with the fact that teachers resort very little to continuing education opportunities. Article visualizations:

Occurrence of Weeds in Areas Submitted to Tillage Managements for Soybean Cultivation in the Cerrado of Roraima.

Abstract: Weeds from soils submitted to different tillage managements were identified in two consecutive years of soybean cultivation in the Cerrado of Roraima. The study was carried out in three areas: native area (NA), mechanically mowed native area (MA), and limed area (LA). A descriptive analysis of the phytosociological parameters relative density (Drr), relative frequency (Frr), relative dominance (Dor), importance value index (IVI), and index of relative importance (IRI) was performed to interpret the results. The weed similarity index (SI) was also calculated in the assessed areas. The highest relative frequencies were observed for Trachypogon plumosus (40.92%), Bulbostylis capillaris (18.52%), and Spermacoce capitata (18.33%) in the native area and T. plumosus (24.69%), Cyperus flavus (24.69%), and S. capitata (18.52%) in the mowed area. Among the species collected in the areas, the botanical families Poaceae, Cyperaceae, Fabaceae, and Rubiaceae are the most representative. The used managements contribute to the emergence of new species of spontaneous plants and weeds in the Cerrado of Roraima.

Acclimatization of micropropagated seedlings of pineapple cultivars on organic substrates

Abstract: Fusariosis constitutes an important hindrance to pineapple farming in Brazil. The cultivars resistant to fusariosis, ‘Vitoria’ and ‘Imperial’, from in vitro culture, are an alternative for crop management. This work evaluates the veg­etative performance of pineapple cultivars propagated by tissue culture in response to the use of organic sub­strates, different in nature and proportion. The experimental design was a completely randomized block, arranged in a 3×5 factorial scheme, with three pineapple cultivars (‘Perola’, ‘Vitoria’, and ‘Imperial’) and five substrates [ORG: Organoamazon®, organic compound; SS: Standard Substrate, soil + sand (1:1 v/v); SS + M + C: SS + sheep manure (M) + carbonized rice husk (C) (2:1:1 v/v); SS + M (3:1 v/v); SS + C (3:1 v/v), unfolded in mean contrasts]. The variables analyzed were shoot and root growth and shoot nutrient content. The vegetative perfor­mance of cultivars, considering the increase of shoot dry weight in the most responsive substrate, was: ‘Perola’ > ‘Vitoria’ > ‘Imperial’. Substrate ORG promoted higher increases in shoot dry weight (259%) and root density (116%) compared to the average of the other substrates. The growth promoted by ORG resulted in higher N, P, K, Ca, and Mg content in pineapple plants. Substrates ORG and SS + M + C are recommended for acclimatiza­tion of in vitro propagated pineapple seedlings in the period of ex vitro seedling acclimatization.

Spin rotation induced by applied pressure in the Cd-doped Ce 2 RhIn 8 intermetallic compound

Abstract: The pressure evolution of the magnetic properties of the ${\mathrm{Ce}}_{2}{\mathrm{RhIn}}_{7.79}{\mathrm{Cd}}_{0.21}$ heavy fermion compound was investigated by single crystal neutron magnetic diffraction and electrical resistivity experiments under applied pressure. From the neutron magnetic diffraction data, up to $P=0.6\phantom{\rule{0.28em}{0ex}}\mathrm{GPa}$, we found no changes in the magnetic structure or in the ordering temperature ${T}_{N}=4.8\phantom{\rule{0.28em}{0ex}}\mathrm{K}$. However, the increase of pressure induces an interesting spin rotation of the ordered antiferromagnetic moment of ${\mathrm{Ce}}_{2}{\mathrm{RhIn}}_{7.79}{\mathrm{Cd}}_{0.21}$ into the $ab$ tetragonal plane. From the electrical resistivity measurements under pressure, we have mapped the evolution of ${T}_{N}$ and the maximum of the temperature dependent electrical resistivity (${T}_{\mathrm{MAX}}$) as a function of the pressure ($P\phantom{\rule{4pt}{0ex}}\ensuremath{\lesssim}3.6\phantom{\rule{0.28em}{0ex}}\mathrm{GPa}$). To gain some insight into the microscopic origin of the observed spin rotation as a function of pressure, we have also analyzed some macroscopic magnetic susceptibility data at ambient pressure for pure and Cd-doped ${\mathrm{Ce}}_{2}{\mathrm{RhIn}}_{8}$ using a mean-field model including tetragonal crystalline electric field (CEF). The analysis indicates that these compounds have a Kramers doublet ${\mathrm{\ensuremath{\Gamma}}}_{7}^{\ensuremath{-}}$-type ground state, followed by a ${\mathrm{\ensuremath{\Gamma}}}_{7}^{+}$ first excited state at ${\mathrm{\ensuremath{\Delta}}}_{1}\ensuremath{\sim}80\phantom{\rule{0.28em}{0ex}}\mathrm{K}$ and a ${\mathrm{\ensuremath{\Gamma}}}_{6}$ second excited state at ${\mathrm{\ensuremath{\Delta}}}_{2}\ensuremath{\sim}270\phantom{\rule{0.28em}{0ex}}\mathrm{K}$ for ${\mathrm{Ce}}_{2}{\mathrm{RhIn}}_{8}$ and ${\mathrm{\ensuremath{\Delta}}}_{2}\ensuremath{\sim}250\phantom{\rule{0.28em}{0ex}}\mathrm{K}$ for ${\mathrm{Ce}}_{2}{\mathrm{RhIn}}_{7.79}{\mathrm{Cd}}_{0.21}$. The evolution of the magnetic properties of ${\mathrm{Ce}}_{2}{\mathrm{RhIn}}_{8}$ as a function of Cd doping and the rotation of the direction of the ordered moment for the ${\mathrm{Ce}}_{2}{\mathrm{RhIn}}_{7.79}{\mathrm{Cd}}_{0.21}$ compound under pressure suggest important changes of the single ion anisotropy of ${\mathrm{Ce}}^{3+}$ induced by applying pressure and Cd doping in these systems. These changes are reflected in modifications in the CEF scheme that will ultimately affect the actual ground state of these compounds.

Physical attributes of soil under amazon forest conversion for different crop systems in southern Amazonas, Brazil

Abstract: The conversion of forested areas into cropping systems modifies the soil physical attributes and affects the environmental and economic sustainability of agricultural activity. Thus, this work aime...

Contradições, debilidades e acertos dos marcos de regularização de venezuelanos no Brasil

Abstract: This article analyzes the way in which the Brazilian State has dealt with the Venezuelan migratory flow in order to carry out a critical analysis in the normative construction of responses to the flows that go to Brazil, through the confrontation of this state construction with the effectiveness of the measures and the compliance with international Human Rights. We will first analyze the Venezuelan migration in Roraima, in order to relate this flow to the legal framework of the Statute of Foreigners, new migration law and the Refugee Statute, as well as the emergency norms for the subject, such as Resolution 126 / 2017 of the CNIg, as well as Interministerial Order No. 9. Finally, it will be analyzed whether the legal norms of protection to the migrant in Brazil are consistent with the expectations promoted by Human Rights enshrined in international diplomas. The article concludes that the recognition of the serious and widespread violation of human rights in Venezuela, although belated, was adequate to the international commitments assumed by Brazil.

O Instituto Insikiran da Universidade Federal de Roraima: trajetória das políticas para a educação superior indígena

Abstract: Apresenta a trajetoria das politicas para a educacao superior em atencao aos povos e comunidades indigenas de Roraima no âmbito da Universidade Federal de Roraima (UFRR), mostrando de que forma se da o acesso e como se realizam as atividades didatico-pedagogicas dos cursos de Licenciatura Intercultural e Gestao Territorial Indigena. Destaca ainda as parcerias, a manutencao dos cursos especificos, o acompanhamento dos estudantes indigenas nos demais cursos de graduacao da Universidade e, tambem, os novos desafios para a implementacao de cursos de pos-graduacao lato sensu e strictu sensu, visando atender as demandas de indigenas egressos das graduacoes que almejam a continuidade da formacao e da capacitacao em nivel de pos-graduacao.