AUDIODESCRIÇÃO E EDUCAÇÃO AMBIENTAL: DIÁLOGOS POLÍTICOS E PEDAGÓGICOS

A sociedade moderna passa por muitas transformações, as quais afetam diretamente nosso modo de ver e agir no mundo. Ao longo da história, extermínio, exclusão, segregação, integração foram conceitos que fazem parte da vida das pessoas com deficiência. O presente trabalho busca identificar a construção das políticas públicas de acessibilidade e inclusão, suas transformações conceituais e como a audiodescrição se estabelece neste contexto, ou seja, como se afirma teórica e politicamente. Como utilizar a audiodescrição como uma ferramenta pedagógica nos processos de educação ambiental? A ideia de acessibilidade e sustentabilidade é trabalhada para pensar novas concepções pedagógicas que conectem saberes individuais e coletivos a partir da compreensão de que o meio ambiente é um direito de todos, inclusive das pessoas com deficiência. São apresentadas as principais normas no âmbito do Brasil e como as mesmas são influenciadas por documentos internacionais e quais são os atores envolvidos nestes processos. Por fim, há uma tentativa de conectar estas questões como dimensões de uma política pública de educação para todas as pessoas, oferecendo sugestões de acessibilidade a projetos e programas de educação ambiental no âmbito federal. 

Chapparvoviruses occur in at least three vertebrate classes and have a broad biogeographic distribution

Chapparvoviruses are a highly divergent group of parvoviruses (family Parvoviridae) that have recently been identified via metagenomic sampling of animal faeces. Here we report the sequences of six novel chapparvoviruses identified through both metagenomic sampling of bat tissues and in silico screening of published vertebrate genome assemblies. The novel chapparvoviruses share several distinctive genomic features, and group together as a robustly supported monophyletic clade in phylogenetic trees. Our data indicate that chapparvoviruses have a broad host range in vertebrates, and a global distribution

The double white dwarf merger progenitors of SDSS J2211+1136 and ZTF J1901+1458

Double white dwarf (DWD) mergers are possibly the leading formation channel of massive, rapidly rotating, highfield magnetic white dwarfs (HFMWDs). However, a direct link connecting a DWD merger to any observed HFMWD is still missing. We here show that the HFMWDs SDSS J221141.80+113604.4 (hereafter J2211+1136) and ZTF J190132.9+145808.7 (hereafter J1901+1458) might be DWD merger products. J2211+1136 is a 1.27 Me white dwarf (WD) with a rotation period of 70.32 s and a surface magnetic field of 15 MG. J1901+1458 is a 1.327–1.365 Me WD with a rotation period of 416.20 s, and a surface magnetic field in the range 600–900 MG. With the assumption of single-star evolution and the currently measured WD masses and surface temperatures, the cooling ages of J2211+1136 and J1901+1458 are, respectively, 2.61–2.85 Gyr and 10–100 Myr. We hypothesize that these WDs are DWD merger products and compute the evolution of the postmerged configuration formed by a central WD surrounded by a disk. We show that the postmerger system evolves through three phases depending on whether accretion, mass ejection (propeller), or magnetic braking dominates the torque onto the central WD. We calculate the time the WD spends in each of these phases and obtain the accretion rate and disk mass for which the WD rotational age, i.e., the total time elapsed since the merger to the instant where the WD central remnant reaches the current measured rotation period, agrees with the estimated WD cooling age. We infer the mass values of the primary and secondary WD components of the DWD merger that lead to a postmerger evolution consistent with the observations

Anatomic changes of the vascular system in grapevine rootstocks

O objetivo deste trabalho foi avaliar a ocorrência de alterações do padrão de vascularização de porta-enxertos de videira. Utilizaram-se os genótipos Paulsen 1103 (Vitis berlandieri x Vitis rupestris), MGT 101-14 (Vitis riparia x V. rupestris) e SO4 (V. berlandieri x V. riparia). O experimento foi conduzido em delineamento de blocos ao acaso com três tratamentos (genótipos) e dez plantas por parcela. Avaliaram-se as variáveis de crescimento vegetativo dos porta-enxertos e, por meio de cortes histológicos realizados no ápice, na porção mediana e na base dos ramos, as anatômicas. As diferenças no sistema vascular tornaram-se maiores do ápice para a base dos ramos. Os genótipos SO4 e Paulsen 1103 apresentaram maior área de xilema na base dos ramos, 2,61 e 2,51 mm2, respectivamente, e maior diâmetro dos vasos, 45,8 e 47,2 μm, respectivamente, em comparação ao MGT 101-14 que apresentou 1,60 mm2 de xilema e 34,1 μm de diâmetro dos vasos. Ocorreram modificações também na frequência dos vasos. A área de xilema, o diâmetro e a frequência dos vasos estão relacionados ao crescimento vegetativo dos porta-enxertos. As alterações do padrão de vascularização podem ser um critério para a escolha de porta-enxertos, em razão de sua influência sobre os processos fisiológicos.The objective of this work was to evaluate the occurrence of changes in the vascularization pattern of grapevine rootstocks. The genotypes Paulsen 1103 (Vitis berlandieri x Vitis rupestris), 101-14 MGT (Vitis riparia x V. rupestris), and SO4 (V. berlandieri x V. riparia) were used. The experiment was carried out in a randomized complete block design with three treatments (genotypes) and ten plants per plot. Vegetative growth of grapevine rootstocks and anatomic variables, by the analysis of histological sections performed in the apex, middle, and base portion of the stem, were evaluated. The differences in the vascular system became larger from the apex to the base. The SO4 and Paulsen 1103 genotypes had higher xylem area in the base of the stem, of 2.61 and 2.51 mm2, respectively, and larger diameter of vessels, of 45.8 and 47.2 μm, respectively, in comparison to 101-14 MGT that showed 1.60 mm2 for xylem and 34.1 μm for vessel diameter. Modifications also occurred for the frequency of vessels. The xylem area, diameter, and frequency of vessels are related to rootstock vegetative growth. Vascularization pattern changes may be a criterion for the choice of rootstocks, due to their effect on the physiological processes

Violaceae

Apresenta-se o estudo taxonômico das espécies da família Violaceae ocorrentes no Parque Nacional da Restinga de Jurubatiba, Estado do Rio de Janeiro, Brasil, onde está representada por dois gêneros e três espécies: Anchietea pyrifolia var. pyrifolia (Mart.)G.Don, Anchietea pyrifolia var. hilariana (Eichl.)Marquete Dames e Silva, Hybanthus calceolaria (L.)Oken. São dadas descrições e comentários das espécies, chave de identificação e ilustrações.A taxonomic study of Violaceae species from the Restinga de Jurubatiba National Park, Rio de Janeiro, Brazil, revealed that there are two genera and two species: Anchietea pyrifolia var. pyrifolia (Mart.)G.Don, Anchietea pyrifolia var. hilariana (Eichl.)Marquete Dames e Silva, Hybanthus calceolaria (L.)Oken. The species are described and an identification key is given, together with illustrations and comments on each species

Discovery of novel astrovirus and calicivirus identified in ruddy turnstones in Brazil

Birds are the natural reservoir of viruses with zoonotic potential, as well as contributing to the evolution, emergence, and dissemination of novel viruses. In this study, we applied a high-throughput screening approach to identify the diversity of viruses in 118 samples of birds captured between October 2006 to October 2010 in the North and Northeast regions of Brazil. We found nearly complete genomes of novel species of astrovirus and calicivirus in cloacal swabs of ruddy turnstones (Arenaria interpres) collected in Coroa do Avião islet, Pernambuco State. These viruses are positive-sense single-stranded RNA with a genome of ~7 to 8 kb, and were designated as Ruddy turnstone astrovirus (RtAstV) and Ruddy turnstone calicivirus (RTCV), respectively. Phylogenetic analysis showed that RtAstV and RTCV grouped in a monophyletic clade with viruses identified from poultry samples (i.e., chicken, goose, and turkey), including viruses associated with acute nephritis in chickens. Attempts of viral propagation in monkey and chicken cell lines for both viruses were unsuccessful. Also, we found genomes related with viral families that infect invertebrates and plants, suggesting that they might be ingested in the birds' diet. In sum, these findings shed new light on the diversity of viruses in migratory birds with the notable characterization of a novel astrovirus and calicivirus

Characterization of the mandible atta laevigata and the bioinspiration for the development of a biomimetic surgical clamp

Approximately thousand years ago it was reported the use of mandibles of ants for suture. In this sense, bioinspired components, as absorbable surgical clamps, can be designed. This study is aimed to characterize the mandible of the ant Atta laevigata in order to help the selection of candidate biomaterials for application as surgical clamps. Three pairs of mandibles were used and ten nanoindenations were performed in each pair. The average hardness for the samples in the internal and external regions were 0.36 ± 0.06 GPa and 0.19 ± 0.04 GPa, respectively and the average elastic modulus for the internal and external regions were 6.16 ± 0.23 GPa and 2.74 ± 0.44 GPa, respectively. The morphology of the mandible was observed in detail by scanning electron microscopy, as well as Energy-dispersive X-ray spectroscopy. The average roughnesses on the internal and external regions, measured by atomic force microscopy, were 6.73 ± 0.90 nm and 11.87 ± 1.42 nm, respectively. From these results, it was possible to identify biomaterials that mimic the mandible behaviour for surgical clamp. © 2017

A RELAÇÃO DE COLUNA CERVICAL COM A DISFUNÇÃO TEMPOROMANDIBULAR E SEUS PRIMCIPAIS SINAIS E SINTOMAS

A articulação temporomandibula é uma articulação sinovial que faz parte do sistema estomagnatico, as alterações que interferem no bom funcionamento geram uma disfunção temporomandibular. O objetivo desse estudo é revisar a ligação da DTM com o desvio de coluna cervical e os seus principais sinais e sintomas. Este estudo foi embasado em levantamento bibliográfico com as buscas realizadas em base de dados (Scielo e goolgle acadêmico) com suas respectivas estratégias de busca. Conclui-se que existe uma correlação significativa com desvio de coluna cervical e indivíduos com DTM e sinais e sintomas do grupamento muscular da cadeia posterior e anterior

TEORES DE NUTRIENTES FOLIARES EM PLANTAS DE ERVA-MATE EM FUNÇÃO DA POSIÇÃO E ORIENTAÇÃO GEOGRÁFICA DA COPA, EM GUARAPUAVA-PR

The objective of this paper was to analyze the relation between dry and fresh weight and the nutrient contents (N, P, K, Ca e Mg) in leafs of Ilex paraguariensis tree, considering canopy position (lower, medium and upper) and geographical orientation (north, south, east and west). The experiment was accomplished in Guarapuava-PR, in a stand with 15 years of age. The analyses showed that: the medium relationship among the dry and fresh weight of leaves in the canopy position was in 0,4463; except for the calcium, the Ilex Paraguariensis trees do not export different amounts of the nutrient in relation to the canopy position and geographical orientation; 35,45% of the leaves are in the lower canopy position, 36,84% in the medium and 27,71% in the upper; the concentrations of the nutrients (N, P, K, Ca and Mg) found in the leaves were smaller than values verified in native Ilex paraguariensis trees.O objetivo do presente trabalho consistiu em analisar a relação massa seca e fresca e os teores de N, P, K, Ca e Mg das folhas de plantas de erva-mate (Ilex paraguariensis St. Hil.), em função da posição (terços: inferior, médio e superior) e orientação geográfica (norte, sul, leste e oeste) da copa. O experimento foi realizado em Guarapuava-PR, em um plantio (erval) com 15 anos de idade. As análises evidenciaram que: a relação média entre a massa seca e fresca nos terços ficou em 0,4463; com exceção do cálcio, verificou-se que as plantas de erva-mate não exportam diferentes quantidades do nutriente em relação à posição da copa e orientação geográfica; 35,45% das folhas de erva-mate encontram-se no terço inferior, 36,84% no terço médio e 27,71% no terço superior; as concentrações totais dos nutrientes (N, P, K, Ca e Mg) obtidos nas folhas da erva-mate foram menores do que os encontrados em ervais nativos do Paraná