Showing papers by "Federal University of Roraima published in 2014"
TL;DR: The total phenolic and flavonoid content, color, and antioxidant activity were evaluated from ten honey samples from Apis mellifera L. collected from Roraima State, Brazil as mentioned in this paper.
Abstract: The total phenolic and flavonoid content, color, and antioxidant activity were evaluated from ten honey samples from Apis mellifera L. collected from Roraima State, Brazil. The total phenolic content was determined using the Folin-Ciocalteu reagent and ranged from 250 to 548 mg gallic acid kg –1 of honey. The total flavonoid content was obtained using two methods: total flavones/flavonols were determined with aluminum chloride, and flavonones/dihydroflavonols were determined with 2,4-dinitrophenylhydrazine. The results ranged from 9 to 48.6 mg of quercetine kg –1 of honey and 1805 to 2606 mg of pinocembrin kg –1 of honey, respectively. Antioxidant activity was measured with 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavengers, and the results of the IC 50 ranged from 3.17 to 8.79 mg/mL. Statistical analysis demonstrated positive correlations between color intensity, flavone and flavonol content, and phenolic content and negative correlations with antioxidant capacity.
132 citations
TL;DR: O artigo visa a refletir sobre a formacao e educacao permanente de trabalhadores da e para a saude indigena, diretriz da Politica Nacional de Atencao a Saude dos Povos Indigenas that se apresenta atrasada e inconclusa na agenda oficial.
Abstract: Este artigo visa a refletir sobre a formacao e educacao permanente de trabalhadores da e para a saude indigena, diretriz da Politica Nacional de Atencao a Saude dos Povos Indigenas que se apresenta atrasada e inconclusa na agenda oficial. Partindo das proposicoes intersetoriais dos Ministerios da Saude e da Educacao direcionadas a formacao em saude, destacamos o caso da atencao a saude indigena, apontando que as iniciativas oficiais na area ainda necessitam incorporar o conceito de educacao permanente, que e um potente instrumento para o favorecimento do dialogo intercultural e orientacao das praticas sanitarias.
36 citations
TL;DR: This study describes a sea-level highstand older than MIS 5, based on the stratigraphy, ages and fossils of the shallow marine facies found in coastal barrier (Barrier II), and Paleoceanographic conditions at the time of the highstand and correlations with other deposits in the Brazilian coasts are discussed.
Abstract: The coastal plain of the state of Rio Grande do Sul, in southern Brazil, includes four barrier-lagoon depositional systems formed by successive Quaternary sea-level highstands that were correlated to marine isotope stages (MIS) 11, 9, 5 and 1, despite the scarcity of absolute ages. This study describes a sea-level highstand older than MIS 5, based on the stratigraphy, ages and fossils of the shallow marine facies found in coastal barrier (Barrier II). This facies outcrops along the banks of Chui Creek, it is composed of fine, well-sorted quartz sand and contains ichnofossils Ophiomorpha nodosa and Rosselia sp., and molluscan shells. The sedimentary record indicates coastal aggradation followed by sea-level fall and progradation of the coastline. Thermoluminescence (TL) and electron spin resonance (ESR) ages from sediments and fossil shells point to an age of ∼220 ka for the end of this marine transgression, thus correlating it to MIS 7 (substage 7e). Altimetric data point to a maximum amplitude of about 10 meters above present-day mean sea-level, but tectonic processes may be involved. Paleoceanographic conditions at the time of the highstand and correlations with other deposits in the Brazilian coasts are also discussed.
28 citations
TL;DR: In this article, it was shown that the used equations of state describing quark matter are in general too soft, in comparison with the equation of states used to describe the hadronic or nuclear matter, to explain the stability of high compact massive objects.
Abstract: High massive compact stars have been reported recently in the literature, providing strong constraints on the properties of the ultradense matter beyond the saturation nuclear density. In view of these results, the calculations of quark star or hybrid star equilibrium structure must be compatible with the provided observational data. But, since the used equations of state describing quark matter are in general too soft, in comparison with the equation of states used to describe the hadronic or nuclear matter, the calculated quark star models presented in the literature are in general not suitable to explain the stability of high compact massive objects.
26 citations
TL;DR: The results demonstrated that the fragments showed different biological invasion patterns that were determined by the nature of surrounding matrix and the ecological characteristics of the invasive species.
Abstract: Este estudo objetivou avaliar a invasao por especies arboreas exoticas em dois fragmentos (F1 e F2) de Floresta Ombrofila Mista (FOM) em Lages, SC. Foram alocadas 25 parcelas por fragmento, distribuidas em cinco transecoes de 20 x 100 m, perpendiculares as bordas e com distância de 100 m entre si, onde foram avaliados os individuos dos estratos adulto (DAP - diâmetro a altura do peito > 5 cm) e regenerante (DAP 10 cm). Esses foram identificados e mensurados (circunferencia e altura). Foi calculado, para as especies de cada estrato e de cada fragmento, o Indice de Invasao Biologica (IIB). A relacao entre o IIB e a distância da borda foi verificada por meio de regressoes lineares simples. O agrupamento de especies exoticas e nativas foi determinado por meio de correlacoes de Spearman e de dendrogramas. Foram amostrados 3.701 individuos distribuidos em 105 especies, sendo cinco especies invasoras. No F1 houve valores de IIB relativamente baixos (0,05 e 0,54), com Pinus taeda L., obtendo-se a maior participacao na invasao, e esse esteve agrupado com especies nativas pioneiras. Os IIB´s no F2 foram altos (0,61 e 1,96), principalmente pela elevada participacao de Ligustrum lucidum W.T. Aiton., que ficou agrupado a especies tipicas da FOM. Nao foi observada relacao entre a distância da borda e a intensidade da invasao biologica. Os resultados indicaram que os fragmentos apresentaram diferentes padroes de invasao biologica, determinados pela natureza da matriz de entorno e pelas caracteristicas ecologicas das especies invasoras.
18 citations
TL;DR: In this article, a trabalho avaliar o potencial de sorcao do sulfentrazone em cinco diferentes tipos of solo, por meio da tecnica do bioensaio.
Abstract: Objetivou-se com este trabalho avaliar o potencial de sorcao do sulfentrazone em cinco diferentes tipos de solo, por meio da tecnica do bioensaio. O comportamento do herbicida foi estudado nos seguintes tipos de solo: Planossolo Haplico, Argissolo Vermelho, Cambissolo Humico, Neossolo Regolitico e Latossolo Vermelho-Amarelo, alem de um controle, apenas com areia lavada. O experimento foi realizado no delineamento inteiramente casualizado, e os tratamentos foram constituidos de sete doses crescentes do sulfentrazone em cada um dos tipos de solo. Aos 21 dias apos emergencia, realizou-se a colheita da planta indicadora e foi determinada a massa da materia seca, bem como a dose do herbicida capaz de reduzir em 50% o acumulo de massa da materia seca das plantas indicadoras (C50). Com esses dados calculou-se a relacao de sorcao (RS) do sulfentrazone, por meio da comparacao da relacao dos resultados da C50 de cada solo com a C50 obtida na areia lavada. Os valores de RSdiferiram para os diferentes solos, apresentando a seguinte ordem crescente: Planossolo Haplico < Latossolo Vermelho-Amarelo < Argissolo Vermelho < Cambissolo Humico < Neossolo Regolitico; os solos com maiores teores de materia orgânica apresentaram os maiores RS e pH de cada solo. Conclui-se que a sorcao do sulfentrazone e influenciada pelo teor de materia orgânica e pH dos solos.
18 citations
TL;DR: In this article, a study dealt with 4-10 year-old children stories and analyzed how they portrait their experiences at school, revealing consensus and tensions between scholar cultu- re and childhood cultures, which affect the way children play and learn, make friends, remain children or not.
Abstract: This study deals with 4-10 year-old children stories and analyses how they portrait their experiences at school. It is the outcome of an inter-institutional research project performed at schools in Natal, Sao Paulo, Recife, Niteroi and Boa Vista. To collect data, we opted for conversations of children in groups of five, who would share a conversation with a little alien whose planet lacked schools. The analyses revealed consensus and tensions between scholar cultu - re and childhood cultures, which affect the way children play and learn, make friends or not, remain children or not. When narrating, the child redefines his/her experience and contributes to seize the primary school as a place where he/she becomes (or not) a citizen.
16 citations
TL;DR: In this article, the authors show that within-plate to post-collisional tectonic setting for the Iricoume volcanism was related to the reworking of older Paleoproterozoic at the Rhyacian-Siderian period, continental crust (Transamazonian crust-forming event) with some mixing with a limited amount mantle derived magmas or with contamination by Archean crust.
Abstract: The southernmost region of the Guyana shield, Amazonian craton, hosts large record of Paleoproterozoic effusive rocks of the Iricoume Group. They present remarkably well-preserved igneous textures and structures. The SiO2 contents reveal a bimodal association marked by a compositional gap between acid (SiO2 >; 67 wt%) and intermediate (SiO2 < 57.7 wt%) rocks. The acid effusive rocks are rhyolites to rhyodacites with high SiO2, alkali, Rb, Zr, Nb + Ta, La + Ce and 104 Ga/Al content and low Fe2O3tot, TiO2, CaO, Sr and Co content. They exhibit subalkaline, metaluminous-to-peraluminous compositions, and geochemically compatible to A-type magmatism emplaced in post-collisional to within-plate tectonic settings. The intermediate rocks are andesitic/basalt to andesite relatively high contents of TiO2, Al2O3, Fe2O3total, MgO, CaO, Sr and Co; low SiO2, K2O, Rb, Zr, Nb + Ta, La + Ce. They have subalkaline and metaluminous geochemical composition and plot on within-plate basalt field. The acid rocks crystallized at 1882 ± 11 Ma in U-Pb analyses for LA-MC-ICPMS zircon data. The Sm-Nd isotopic data on all rocks reveal a Nd TDM model ages between 2.59 and 2.16 Ga and eNd(t) values between -5.78 and 0.03, indicate that the magmatic evolution was related to the reworking of older Paleoproterozoic at the Rhyacian-Siderian period, continental crust (Transamazonian crust-forming event) with some mixing with a limited amount mantle-derived magmas or with contamination by Archean crust. The petrographic, geochemical and geochronological data presented in this paper suggest a within-plate to post-collisional tectonic setting for the Iricoume volcanism, involving lower crust uplift and generation of basalt magma in an extensional regime.
14 citations
TL;DR: The findings reaffirm the hyperendemic situation of the state of Roraima and suggest a lower sensitivity of the NS1 test, mainly when DENV-4 is the predominant serotype.
Abstract: Serum samples from 150 NS1-negative (Platelia ELISA) patients presumptively diagnosed with dengue were analyzed by the TaqMan probed real-time reverse transcription PCR (TaqMan qRT-PCR) method. The qRT-PCR positive samples were tested for serotype by semi-nested RT-PCR and a qualitative immunochromatographic assay for IgG and IgM. Molecular detection methods showed 33 (22%) positive samples out of 150 NS1-antigen negative samples. Of these, 72% were collected up to day 2 after the onset of symptoms, when diagnostic sensitivity of NS1-antigen test assays is significantly enhanced. Most of the cases were not characterized as secondary infection. Twenty-eight samples were successfully serotyped, 75% of which for DENV-4, 14% for DENV-2, 7% for DENV-3 and 4% for DENV-1. These findings reaffirm the hyperendemic situation of the state of Roraima and suggest a lower sensitivity of the NS1 test, mainly when DENV-4 is the predominant serotype. Health care providers should therefore be aware of samples tested negative by NS1 antigen assays, especially when clinical symptoms and other laboratory data results show evidence of dengue infection.
14 citations
TL;DR: The later the emergence of weeds with respect to the crop, the less the interference they cause, and, thereby, the crop presents a greater ability to compete with the weeds for available resources in the environment.
Abstract: The objective was to evaluate the effects of times of emergence of the weed ryegrass species and wild radish on barley. The experiment was conducted in a randomized block design, arranged in a 2x5 factorial design, with three replicates. In factor A were allocated the competing species (ryegrass and wild radish) and in factor B the emergence periods (14 and 7 days before, on the same day, 7 and 14 days after crop emergence). At the beginning of barley flowering, the following variables were quantified: plant height, number of stalks or stems, leaf area, and shoot dry mass of crop and weeds. All barley variables had increased in value with the delay in weed emergence. The species, cultivated or weeds, that emerged earlier showed greater competitive ability, dominating the environment when emerging 14 days before each other. The later the emergence of weeds with respect to the crop, the less the interference they cause, and, thereby, the crop presents a greater ability to compete with the weeds for available resources in the environment.
14 citations
TL;DR: The first report of cryptogeal germination in the Malpighiaceae as well as in Neotropical eudicots is reported, representing a newly defined seedling group among eudicot seedling types.
TL;DR: To isolate and characterize rhizobia from nodules of Centrolobium paraense and to evaluate their symbiotic efficiency, soil samples collected from four sites of the Roraima Cerrado, Brazil were used to cultivate C. paraense in order to obtain nodules.
Abstract: The objective of this work was to isolate and characterize rhizobia from nodules of Centrolobium paraense and to evaluate their symbiotic efficiency. Soil samples collected from four sites of the Roraima Cerrado, Brazil, were used to cultivate C. paraense in order to obtain nodules. Isolates (178) were obtained from 334 nodules after cultivation on medium 79. Twenty-five isolates belonging to six morphological groups were authenticated using Vigna unguiculata and they were characterized by 16S rRNA. Isolates identified as Bradyrhizobium were further characterized using rpoB gene sequencing. A greenhouse experiment was carried out with C. paraense to test the 18 authenticated isolates. Approximately 90% of the isolates grew slowly in medium 79. The 16S rRNA analysis showed that 14 authenticated isolates belong to the genus Bradyrhizobium, and rpoB indicated they constitute different groups compared to previously described species. Only four of the 11 fast-growing isolates nodulated V. unguiculata, two of which belong to Rhizobium, and two to Pleomorphomonas, which was not previously reported as a nodulating genus. The Bradyrhizobium isolates ERR 326, ERR 399, and ERR 435 had the highest symbiotic efficiency on C. paraense and showed a contribution similar to the nitrogen treatment. Centrolobium paraense is able to nodulate with different rhizobium species, some of which have not yet been described.
TL;DR: In this paper, the quantum spin-1/2 anisotropic Heisenberg antiferromagnet model in the presence of a Dzyaloshinskii-Moriya interaction (D ) and a uniform longitudinal (H ) magnetic field was studied.
TL;DR: Tayassuidae, CERVIDAE, and TAPIRIDAE from the Gruta do Urso Fossil, Ubajara National Park, Northwest of the State of Ceara, Brazil as mentioned in this paper were described syncranial and postcranial fragments of the holartic ungulates.
Abstract: TAYASSUIDAE, CERVIDAE, AND TAPIRIDAE FROM THE GRUTA DO URSO FOSSIL (HOLOCENE), UBAJARA NATIONAL PARK, CEARA, BRAZIL. Here are described syncranial and postcranial fragments of the holartic ungulates Tayassu pecari (Link), Tapirus terrestris Linnaeus, Mazama Rafi nesque, Tayassuidae indet., and Cervidae indet., from the Gruta do Urso Fossil, Ubajara National Park, Northwest of the State of Ceara, Brazil. The majority of the material was collected on surface of different levels of the cave, except for specimens from the Sala da Entrada portion of the cave, which were collected in subsurface layers at 0.40 m and 0.50 m. These latter points, dated through the thermoluminescence method, indicated 8,000 and 8,200 years BP, respectively. The presence of T. pecari and T. terrestris suggest a forested environment and a humid climate; whereas Mazama may also inhabit other environments. The scarcity and/or disappearance of T. pecari and T. terrestris in the northern region of the State of Ceara could be related to anthropic reasons associated to climate and environmental changes during the late Quaternary. This seems to be corroborated by the current fauna indicating a semiarid (Caatinga) environment. The presence of Mazama however, suggests that this change has not occurred drastically.
TL;DR: In this paper, the authors evaluate and compare the soil physical attributes of an Argissolo Amarelo (Ultisol) under savanna and forest natural ecosystems, and their conversion into a cattle pasture system.
Abstract: The broad soil and ecosystem diversity of the state of Roraima is gradually being replaced by pasture and, depending on the management system adopted, this can be associated with soil physical degradation. Within this context, the aim of the present study was to evaluate and compare the soil physical attributes of an Argissolo Amarelo (Ultisol) under savanna and forest natural ecosystems, and their conversion into a cattle pasture system. The primary treatments were natural savanna (NS), savanna converted to pasture (CS), natural forest (NF) and forest converted to pasture (CF). The secondary treatments were the soil sampling depths of 0-10, 10-20 and 20-40 cm. The following physical properties were evaluated: texture, bulk density (SD) and particle density (PD), resistance to penetration (PR), total porosity (TP), gravimetric moisture (GM), available water capacity (AWC), and soil organic matter (SOM). The SD was greater in both savanna areas, without differences between CS and NS at any depth, associated with the cohesive character of savanna soils. The average PD value was typical of kaolinite soils. PR varied as a function of the areas and the depths; the effect of conversion on this property was observed. TP was greater in NF and less in CS, and TP decreased along with depth. AWC was greater in NF only at the 0-10 cm depth. SOM was greater in the NF and CF areas. The study concluded that conversion of the natural environment into pasture systems caused significant changes in PR, SD, AWC, TP and SOM, with major expressiveness in CF, due to the removal of natural vegetation, leading to the loss of SOM, which is an important conditioner of soil physical and water properties. In CS areas, suppression of the natural vegetation did not lead to the same expressiveness, mainly due to the significantly lower SOM contents.
TL;DR: In this paper, the authors analyze the Brazilian academic publications on green supply chain management and identify the areas and sub-areas of GSCM that have been studied most frequently.
Abstract: This paper deals with environmental issues from the perspective of Supply Chain Management. With the incorporation of environmental concerns in a systematic manner the concept of Green Supply Chain Management (GSCM) has emerged. The subject GSCM interests not only to academics but also to professional audience especially with regard to new legal obligations, and social pressures of various types of stakeholders, as well as issues related to the competitiveness of enterprises and their supply chains. However, the way in which this knowledge is being produced in Brazil is not clear, hence the need for a mapping which areas and sub-areas of GSCM has been studied most frequently. Thus, this work can be characterized as a desk research that aims to analyze the Brazilian academic publications on green supply chain management. In order to delimit the scope of the research, we collected articles published from 2006 to 2010 in specific Brazilian congresses of Management and Production Engineering, as EnANPAD, SIMPOI and SIMPEP. 110 papers were collected and analyzed.The area of Green Operations represents 81% of published articles and 45% of these focus on Reverse Logistics. 70% of total papers are empirical and 77% use a qualitative approach, while 57% of the total are case studies
TL;DR: Results show consistent quantitative and qualitative differences between these species regarding their seeds and seedlings, supporting a recent treatment of the latter taxon as a distinct species, endemic to Roraima State, northern Amazonia, Brazil.
Abstract: We carried out a comparative morphological study to evaluate the taxonomic value of seed and seedling traits of Entada polystachya and E. simplicata (Leguminosae, Mimosoideae, Mimoseae). Seeds of both species were collected from wild populations in Roraima State, Brazil. Our results show consistent quantitative and qualitative differences between these species regarding their seeds and seedlings. Testa fracture lines, funiculus impression, lens characters, radicle shape and length, and cotyledon lobes length, seedling morphology group, number of pinnae at first node, and hypocotyl length permit a straightforward distinction of E. polystachya from E. simplicata, supporting a recent treatment of the latter taxon as a distinct species, endemic to Roraima State, northern Amazonia, Brazil.
TL;DR: The experiment was conducted to evaluate the feeding behavior of lambs fed with diets containing 0, 12.5 and 25.0% of mulberry hay as a substitute for the concentrate, and found that the use of mulberries partially replacing the concentrated does not change the feedingbehavior of feedlot lambs.
Abstract: The experiment was conducted to evaluate the feeding behavior of lambs fed with diets containing 0, 12.5 and 25.0% of mulberry hay as a substitute for the concentrate. Twenty four Ile de France lambs, non castrated, with 25 kg of body weight and four months old, confined, in a completely randomized design, were used. The feeding daily time (242.01 minutes), rumination (435.48 minutes) and leisure (762.50 minutes), the numbers of cakes ruminated per day (658.36) and the time spent per cake (40.03 sec) were not affected (P>0.05) by different levels of hay in mulberry concentrate. The dry matter voluntary intake (1.258 kg/day) and neutral detergent fiber intake (0.302 kg/day), as well as the efficiency of dry matter intake and rumination (316.24 and 173.54 g/h, respectively) and efficiency of neutral detergent fiber intake and rumination (75.89 and 41.68 g/h, respectively) were similar in all treatments. The ruminating chew expressed in hour/day (11.29) and the number of chews expressed per cake (72.65) and per day (47.638.06), as well as the number and the feeding time (22.02 meals and 11.23 min/meal), rumination (25.95 ruminations and 17.29 min/rumination) and idle (41.81 idle and 18.30 min/idle time), were also not affected (P>0.05). The inclusion of mulberry hay did not change the rumination expressed in g of DM and NDF/cake (1.91 and 0.46, respectively) and min/kg of DM and NDF (361.51 and 1.505.78, respectively), as well as the total chew expressed in min/kg of DM and NDF (563.70 and 2.347.19, respectively). The use of mulberry hay partially replacing the concentrated, does not change the feeding behavior of feedlot lambs.
TL;DR: Five new species of Camelobaetidius with the terminal filament as long as cerci are described and the nymph of C. mexicanus is redescribed based on a paratype from Mexico.
Abstract: The genus Camelobaetidius Demoulin, 1966 has 38 species distributed throughout the Neotropical Region, being one of the most studied genera of the family Baetidae. Based on material from Brazil, the aim of the present paper is to describe five new species of Camelobaetidius with the terminal filament as long as cerci, and to redescribe the nymph of C. mexicanus (Traver & Edmunds, 1968) based on a paratype from Mexico.
TL;DR: The article highlights the case of indigenous healthcare, emphasizing that government initiatives in this area still need to incorporate the concept of continuing education, a powerful tool for fostering intercultural dialogue and orienting health practices.
Abstract: This article discusses training and continuing medical education for indigenous health workers and health professionals in indigenous health under the guidelines of the Brazilian National Healthcare Policy for Indigenous Peoples, which is currently behind schedule and incomplete as part of the official government agenda. Based on inter-sector proposals for health training by the Ministries of Health and Education, the article highlights the case of indigenous healthcare, emphasizing that government initiatives in this area still need to incorporate the concept of continuing education, a powerful tool for fostering intercultural dialogue and orienting health practices.
Journal Article•
TL;DR: A competicao das plantas daninhas com as culturas reduz o fornecimento de alguns recursos para as especies, ocasionando deficiencias que culminam em alteracoes nas caracteristicas fisiologicas relacionadas a fotossintese.
Abstract: A competicao das plantas daninhas com as culturas reduz o fornecimento de alguns recursos para as especies, ocasionando deficiencias que culminam em alteracoes nas caracteristicas fisiologicas relacionadas a fotossintese, como a deficiencia hidrica e nutricional e a baixa qualidade ou quantidade de luminosidade. Assim, objetivou-se com o presente trabalho avaliar o efeito da competicao e do manejo de plantas daninhas nas caracteristicas fisiologicas de plantas de feijoeiro. Utilizou-se delineamento em blocos ao acaso com quatro repeticoes. Os tratamentos foram: plantas de feijoeiro submetidas a aplicacao da mistura de herbicidas fomesafen+fluazifop-p-butyl (Robust®), cultivadas isoladamente e em competicao com capim-marmelada ( Brachiaria plantaginea ), caruru ( Amaranthus hybridus ) e picao-preto ( Bidens pilosa ). As plantas de picao-preto foram as que mais afetam as caracteristicas fisiologicas do feijoeiro, influenciando negativamente o consumo de CO 2 , a transpiracao, a condutância estomatica e principalmente a taxa fotossintetica. Estes resultados podem estar relacionados ao fato dessa especie daninha ser altamente eficiente no uso da agua. A mistura de herbicidas fomesafen+fluazifop-p-butyl reduziu a taxa fotossintetica do feijoeiro.
22 Apr 2014
TL;DR: A discussao feita neste texto traz algumas contribuicoes do campo dos Estudos Culturaiscontemporâneos feitas as questoes sobre cultura e identidade as mentioned in this paper.
Abstract: A discussao feita neste texto traz algumas contribuicoes do campo dos Estudos Culturaiscontemporâneos feitas as questoes sobre cultura e identidade. Sem a pretensao de aprofundaresses complexos conceitos do referido campo, o objetivo e propor uma alternativa as abordagensdo multiculturalismo, que tem desempenhado papel quase que hegemonico como base para osestudos em educacao musical. Primeiramente, apresento a abordagem do multiculturalismo comoforma administracao do convivio entre as comunidades de sociedades multiculturais. Em seguida,apresento os conceitos de cultura e identidades hibridas para, ao final, problematizar as recorrenciasdiscursivas presentes na educacao musical sobre a valorizacao de todas as praticas musicais.
TL;DR: In this paper, a trabalho buscou analisar como o processo de negociacao das perdas simbolicas sofridas pelos atingidos por barragens vem sendo conduzido, tendo sido o dados obtidos a partir de analise documental, seguida da realizacao de entrevistas com os impactados.
Abstract: Dentre as atividades economicas em desenvolvimento no Brasil, esta a construcao de usinas hidreletricas. A crescente expansao do setor eletrico vem acarretando perdas irreversiveis para as populacoes impactadas, em razao do seu deslocamento compulsorio e consequente ruptura com o seu espaco de construcao simbolica. Tendo em vista o horizonte de crescimento do setor eletrico no pais, este trabalho buscou analisar como o processo de negociacao das perdas simbolicas sofridas pelos atingidos por barragens vem sendo conduzido, tendo sido os dados obtidos a partir de analise documental, seguida da realizacao de entrevistas com os impactados pela Usina Hidreletrica de Estreito, situada no medio Rio Tocantins, entre os Estados do Maranhao e Tocantins. Esta pesquisa evidenciou a necessidade de buscarmos mecanismos que contemplem os valores simbolicos desses atingidos, priorizando a continuidade da vida que nao prima pela logica do mercado e sim pela vivencia com dignidade humana.
TL;DR: It is suggested that poor and seasonally flooded soils tend to reduce the chances of occurrence of herbaceous legumes in savanna areas of Roraima, adversely affecting its richness/diversity.
Abstract: Edaphic factors have been indicated as a determinant of the distribution of plant communities in Amazonia. The aim of this study was to detect which edaphic factors determine the occurrence of herbaceous legumes in Amazonian savannas. Therefore, an inventory of herbaceous flora of the family Leguminosae was conducted in 34 permanent plots established in two savanna areas of Roraima, northern Brazilian Amazon. The importance value index was higher for Chamaecrista desvauxii (24.9%), Aeschynomene hystrix (15.7%) and Galactia jussiaeana (10.8%), all having high abundance and wide distribution. The results indicated low density or absence of individuals and species in plots established on poorly drained soils (hydromorphic). Diversity and species richness tended to be higher in habitats formed on well drained soils, greater fertility and lower concentrations of exchangeable aluminum. It is suggested that poor and seasonally flooded soils tend to reduce the chances of occurrence of herbaceous legumes in savanna areas of Roraima, adversely affecting its richness/diversity.
TL;DR: The ruminal degradation kinetics of Andropogon gayanus grass silages showed that the grass ensiled with 56 days of regrowth had higher nutritional value.
Abstract: Maturity is considered the primary factor affecting the nutritive value of forages The aim of this study was to evaluate and compare dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) ruminal degradation kinetics of Andropogon gayanus grass silages harvested at three stages of maturity (56, 84 and 112 d) Dried and ground silage samples (5 mm) were incubated in nylon bags inside the rumen for 0, 6, 12, 24, 48, 72 and 96 h to estimate the kinetics of ruminal DM, CP and NDF degradation The ruminal kinetic parameters of the silages from each treatment (56, 84 and 112 d of regrowth) in each animal (5 cows) were determined by the model: y= a+ b(1 − e−c(t−L)) The parameters generated by the model were analyzed as randomized block design, with grass regrowth age as the fixed effect and animal the as random effect (blocks) The grass silage ensiled with 56 days of regrowth had the highest (P<005) effective degradability of DM and NDF calculated for fractional rate of particulate passage of 2%/h All silages had low CP soluble fraction (<254%) and effective degradability calculated for fractional rate of particulate passage of 2%/h (<401%) A greater (P<005) NDF lag time was observed for the silages ensiled with 84 and 112d compared to the silage produced with 56d of regrowth The ruminal degradation kinetics of Andropogon gayanus grass silages showed that the grass ensiled with 56 days of regrowth had higher nutritional value
TL;DR: The spectrum of the six timesionized krypton (Kr VII) has been observed in the 300-4800-A wavelength range, resulting in 115 new classified lines.
Abstract: The spectrum of the six times-ionized krypton (Kr VII) has been observed in the 300–4800 A wavelength range, resulting in 115 new classified lines. We revised the values for the previously known energy levels and extended the analysis to 38 new energy levels belonging to 4s5s, 4s6s, 4p4f, 4s6d and 4p4d, 4s5p, 4s4f, 4p5s, 4s5f, 4s6p, 4s6f even and odd configurations, respectively. For the prediction of the atomic parameters, energy levels and transition, regularities of atomic structure and relativistic Hartree–Fock calculations were used.
05 May 2014
TL;DR: A conclusao geral deste estudo aponta that os quintais of Boa Vista sao unidades de praticas culturais urbanas that envolvem a conservacao de especies de plantas representativas da agrobiodiversidade amazonica, mas fortemente associados a usos preferenciais tradicionais that transitam intra e inter-regioes brasileiras.
Abstract: Quintais urbanos sao fontes de uma ampla gama de especies de plantas que podem ser alternativas a suplementacao alimentar de populacoes perifericas de cidades de grande e medio porte da Amazonia. Este estudo teve como objetivo investigar a composicao, riqueza e diversidade de plantas da cidade de Boa Vista, Roraima. Para tanto, foi realizado um inventario dos componentes floristicos de 60 quintais amostrados em tres bairros. O levantamento resultou na observacao de 4197 individuos distintos em 77 familias botânicas e 424 especies. As familias mais abundantes foram Asparagaceae, Araceae e Rubiaceae. As formas de vida nao arborea apresentaram maior diversidade, indicando maior nivel de complexidade neste grupo. Ao contrario, maior homogeneidade foi observada entre as formas de vida arborea dos tres bairros, indicando o uso comum de especies arboreas, em especial de fruteiras. Planta ornamental foi a categoria de uso dominante nos quintais (> 50%). A conclusao geral deste estudo aponta que os quintais de Boa Vista sao unidades de praticas culturais urbanas que envolvem a conservacao de especies de plantas representativas da agrobiodiversidade amazonica, mas fortemente associados a usos preferenciais tradicionais que transitam intra e inter-regioes brasileiras.
02 Sep 2014
TL;DR: In this article, a trabalho descreve e ilustra o desenvolvimento e a morfologia de plântulas de Martiodendron excelsum e avalia, por meio de uma revisao, a relevância sistematica dos atributos de plainulas em nivel de genero em Dialiinae.
Abstract: Martiodendron Gleason e um genero sul-americano com cinco especies arboreas, subordinado a Dialiinae (tribo Cassieae). Dialiinae apresenta 17 generos, que formam um clado cujas relacoes genericas permanecem em grande parte nao definidas. Este trabalho descreve e ilustra o desenvolvimento e a morfologia de plântulas de Martiodendron excelsum e avalia, por meio de uma revisao, a relevância sistematica dos atributos de plântulas em nivel de genero em Dialiinae. Sementes de M. excelsum foram coletadas de populacoes em areas de mata ciliar no Estado de Roraima, Brasil. Martiodendron excelsum tem plântulas fanero-epigeo-armazenadoras, eofilos estipulados e 1-foliolados nos tres primeiros nos. Os dados sobre morfologia de plântulas sao potencialmente uteis para diagnosticar generos em Dialiinae, visto que Martiodendron e todos os demais generos podem ser distintos entre si pela a variacao no grupo morfologico de plântulas, na filotaxia e numero de foliolos no primeiro e segundo eofilos, nas relacoes entre o comprimento e largura dos cotiledones e entre o comprimento do hipocotilo e epicotilo e no alongamento do primeiro entreno eofilar. Por fim, em Leguminosae, a predominância de eofilos 1-foliolados na maior parte dos generos de Dialiinae e somente comparavel a encontrada entre as plântulas de taxons de Papilionoideae.
TL;DR: In this paper, the authors identify and understand where and how the study of teaching activity takes place in the formation and action of teachers of basic education and how it contributes to the learning of teaching of these teachers.
Abstract: The continuing education of teachers is in a complex process and dimensions that go beyond the development and implementation of legal regulations. This study presents our understanding of teaching activity study, based on studies of Isaia (2006), the formation and action of teachers of Basic Education and their contribution to the learning processes of teaching (Isaia, 2004 and 2006; BOLZAN, 2004, 2006, 2008, 2009, 2010). Our goal is to identify and understand where and how the study of teaching activity takes place in the formation and action of teachers of basic education and how it contributes to the learning of teaching of these teachers. From the narratives, we identified that the elements of teaching study did not articulate entirety with themselves at different times of the pedagogical practice.
TL;DR: In this article, the chemical composition of the volatile oil from the leaves of three specimens of D. frutescens, collected over a period of one year, was determined by gas chromatography-mass spectrometry (GC-MS) and gas chromation with flame ionization detection (GCFID).
Abstract: The chemical composition of the volatile oil from the leaves of three specimens of D. frutescens, collected over a period of one year, was determined by gas chromatography-mass spectrometry (GC-MS) and gas chromatography with flame ionization detection (GC-FID). These essential oils were characterized by the presence of norisoprenoids (β-damascenone, β-ionone, and α-ionone), as well as sesquiterpenes. Multivariate analysis showed that the compounds β-damascenone and β-ionone exerted the greatest influence on spatial and temporal differences in the composition of the oils. Samples obtained from specimens located in the same city showed similar chemical compositions.