bluuebunny/crossref_metadata_2025 huggingface dataset:
31 years of hourly spatially distributed air temperature, humidity, and precipitation amount and phase from Reynolds Critical Zone Observatory
Authors: Kormos Patrick R. , Marks Danny G. , Seyfried Mark S. , Havens Scott C. , Hedrick Andrew , Lohse Kathleen A. , Sandusky Micah
Published: August 2017

Abstract. Thirty one years of spatially distributed air temperature, relative humidity, dew point temperature, precipitation amount, and precipitation phase data are presented for the Reynolds Creek Experimental Watershed, which is part of the Critical Zone Observatory network. The air temperature, relative humidity, and precipitation amount data are spatially distributed over a 10 m Lidar-derived digital elevation model at an hourly time step using a detrended kriging algorithm. This dataset covers a wide range of weather extremes in a mesoscale basin (237 km2) that encompasses the rain-snow transition zone and should find widespread application in earth science modeling communities. Spatial data allows for a more holistic analysis of basin means and elevation gradients, compared to weather station data measured at specific locations. Files are stored in the NetCDF file format, which allows for easy spatiotemporal averaging and/or subsetting. Data are made publicly available through an OPeNDAP-enabled THREDDS server hosted by Boise State University Libraries in support of the Reynolds Creek Critical Zone Observatory (https://doi.org/10.18122/B2B59V).
La escuela galáctica: prototipo de escuela creativa transformadora
Authors: Bellón Francisco Menchén
Published: August 2017

El sistema educativo actual es anacrónico. La educación tradicional ha tocado fondo: los maestros están desencantados y los alumnos se aburren en clase. Es urgente una educación alternativa que responda a los desafíos que presenta el siglo XXI, en la que se recojan los nuevos avances de la biología, la física cuántica, la neurociencia y las nuevas tecnologías. LA ESCUELA

GALÁCTICA, como prototipo de Escuela Creativa ransformadora, nace con el propósito de crear un nuevo ser humano. El espíritu de la Escuela Galáctica se analiza con amplitud en los pilares fundamentales de esta modalidad educativa.
Transdisciplinaridade e educação física escolar: reflexões para o desenvolvimento humano
Authors: Guimarães de Paula Marcos Vinícius , Suanno João Henrique
Published: August 2017

Esse trabalho discute a educação escolar a partir da transdisciplinaridade, destacando suas contribuições para despertar as consciências dos aprendizes, permitindo-lhes atingir novos níveis de realidade e percepção para a vida. Reflete a respeito da relevância da transdisciplinaridade na formação humana do ser aprendente. O trabalho também problematiza a disciplina de Educação Física Escolar sob o olhar da transdisciplinaridade, afim de colaborar na formação de seres que exerçam uma cidadania planetária, sendo conscientes de suas ações no mundo e sensíveis à vida. Além disso, apresenta a pesquisa qualitativa desenvolvida por meio de um estudo de caso sobre as práticas pedagógicas dos professores do Grupo de Estudos em Educação Física Escolar da rede municipal de ensino de Anápolis-Go (GETEFE). Na pesquisa em destaque, os dados foram coletados por meio de um questionário de auto-percepção e pelas observações das aulas dos professores envolvidos. No total, foram observadas trinta e seis aulas durante os meses de Março, Abril e Maio do ano de 2015. Em relação aos resultados, foi verificado que as práticas pedagógicas dos professores do Grupo GETEFE se aproximaram da proposta da transdisciplinaridade, visto que abarcaram as categorias de análise da pesquisa descritas por Moraes (2010), que são: a contextualização, a criatividade, a dialogicidade, a subjetividade, a flexibilidade, a ecologia da ação, a cooperação, a multireferencialidade, a afetividade e a diversidade. Sendo assim, observou-se que as ações pedagógicas dos professores do GETEFE contribuem para o desenvolvimento humano do aprendiz. Deste modo, o trabalho vislumbra e defende uma Educação Física Escolar que coopere para humanescer.
Uso da tecnologia na educação, da história à realidade atual
Authors: Bruzzi Demerval Guilarducci
Published: August 2017

Fruto de minha pesquisa de doutorado, o presente artigo tem como principal intenção apresentar um percurso histórico contemplando a evolução da tecnologia disponível a educação desde os idos de 1850 até os dias atuais, apontando de forma clara e direta ao leitor o caminho evolutivo das tecnologias, bem como suas possíveis aplicações, deixando claro que a educação desde os primórdios até os dias atuais sempre teve contato com algum tipo de tecnologia, contrariando alguns teóricos que atribuem a salvação da educação na adoção de um processo tecnológico.
Quando a metodologia é a poética: experiências formativas na disciplina de Estágio Supervisionado em Artes Visuais
Authors: Santos Noeli Batista dos
Published: August 2017

O presente artigo compartilha o relato de experiência do processo metodológico desenvolvido no decurso da disciplina de Estágio Supervisionado em Artes Visuais V, do curso de Licenciatura em Artes Visuais, modalidade presencial, da Faculdade de Artes Visuais da UFG, no segundo semestre do ano letivo de 2015. No decorrer da disciplina, foi proposto ao grupo de estudantes o desenvolvimento de projetos de ensino tendo como fio condutor a proposta metodológica denominada Jogo da Poética. Neste exercício reflexivo, por meio da análise processual e, também, dos relatórios finais dos projetos desenvolvidos pelos grupos, observou-se posturas dialógicas em relação às dimensões pedagógica, sociocultural e institucional dos espaços de imersão. Da mesma forma, temas, conteúdos, linguagens artísticas e formas de compartilhamento foram construídas em grupo por meio de uma

escuta sensível aos parceiros – docentes regentes, estudantes e colegas de disciplina – nos espaços escolhidos, que durante todo o processo desafiaram e motivaram o coletivo descrito no desejo à docência.
Orientações curriculares para o ensino de Teatro nas escolas da rede estadual de Goiás
Authors: De Oliveira Barros Mara Veloso
Published: August 2017

Em 2009 com a publicação do Caderno 5 Reorientação Curricular do 1º ao 9º: Currículo em debate – Goiás, a Secretaria de Estado de Educação, Cultura e Esporte de Goiás (Seduce/GO) propõe as Matrizes curriculares com novos recortes e abordagens de conteúdos e práticas docentes que assumissem as aprendizagens específicas para todas as áreas do conhecimento e anos escolares. O presente artigo discorre sobre os princípios conceituais defendidos no Caderno 5 que atualmente fundamentam o ensino de Teatro nas escolas da rede estadual de

Goiás.
Política de acessibilidade na Universidade Federal de Goiás: construção do documento
Authors: Santana Dalla Dea Vanessa Helena , Rocha Cleomar De Sousa
Published: August 2017

A inclusão e permanência de discentes com deficiência no ensino superior é um desafio que requer das instituições uma política específica que considere todas as dimensões da acessibilidade. Este trabalho tem como objetivo apresentar o processo de escrita e os eixos da política de acessibilidade da Universidade Federal de Goiás. Trata-se de uma investigação qualitativa e descritiva, realizada na perspectiva de estudo de caso. Descritiva, no que diz respeito aos passos e etapas que constituíram a base de escrita do documento; qualitativa, na aproximação crítica do seu resultado. Como conclusão, o artigo aponta para os oito eixos com metas e ações diversas que espelham a complexidade das relações de pessoas com

deficiência no espaço e vida universitária.
Biotic impoverishment and trichoptera loss in a Pennsylvania trout stream: Benthic macroinvertebrate assemblages over 43 summers
Authors: Bradt Patricia T. , Ruggiero Graceanne S.
Published: August 2017

Benthic macroinvertebrates (BMI) are valued as proxies for water quality. Over 43 years, BMI samples were collected in the summers from Bushkill Creek Northampton County, PA. from the same site. The Bushkill is a high-quality cold water trout stream formerly surrounded by agricultural fields and forests, but the area is becoming increasingly urbanized. Data collected over the period indicate that BMI assemblages have undergone considerable changes. Despite no detectable change in water quality, taxa richness, total abundance, and wet weight (mg) have all decreased (p < 0.01). The Hydropsychidae (Trichoptera) family and Psychomyia (-Trichoptera: Psychomyiidae) have declined significantly (p < 0.01). At the same time, two BMI genera, Gammarus (Crustacea: Amphipoda) and Hydroptila (Trichoptera: Hydroptilidae), have increased modestly. Bray–Curtis Community Similarity indices demonstrate that 2015 assemblages were different from those in 1973. Possible explanations for these trends are stresses from land use changes and/or regrowth of riparian vegetation. These results suggest that although water pollutants are often considered when BMI assemblages change, land use and riparian zone changes are also of concern.
MODELAGEM, ESTABILIDADE E SIMULAÇÃO DO PROCESSO DE PRODUÇÃO DE BIOGÁS NUM BIODIGESTOR URBANO
Authors: Oro Neuza Terezinha , Sausen Airam Teresa Zago Romcy , Sausen Paulo Sérgio
Published: August 2017

Este artigo tem por objetivo apresentar um modelo matemático ajustado para biodigestor urbano. Para desenvolver este trabalho, inicialmente, foi realizado um estudo teórico acerca de biodigestor, modelos matemáticos que representam este processo, sistemas autônomos e estabilidade. Em um segundo momento, foram realizadas a simplificação do modelo matemático que descreve o processo de um biodigestor, o ajuste dos parâmetros no modelo, assim como, a análise da estabilidade do sistema e o comportamento da solução encontrada, juntamente com os gráficos para a verificação da quantidade de bactérias e produção de biogás. As simulações foram realizadas em dois momentos: sem retirada de biogás e o com retirada de biogás. No primeiro caso, através do gráfico, foi analisado a produção de biogás e o crescimento das bactérias, na qual confirmou-se que o ponto de equilíbrio fornece o crescimento máximo das bactérias e a produção máxima do biogás. No segundo caso, utilizou-se uma retirada de biogás a cada 24 horas e novamente confirmou-se o ponto de equilíbrio e foi verificado que após esse ponto a produção de biogás e o crescimento das bactérias tornam-se estáveis.
Nosso passado terá um futuro? Reflexões sobre a arqueologia
Authors: Alvarez Kern Arno
Published: August 2017

O homem é uma extraordinária singularidade no mundo dos seres vivos ao se perguntar sobre as suas origens, ao construir discursos míticos ou históricos sobre seu passado e ao escavar o solo e encontrar os arquivos, que contêm os vestígios de seus antecessores. Somos responsáveis por esses milhares de vestígios da cultura material, que nos abrem novas perspectivas através de seu estudo, em busca das respostas que cada geração formula sobre o seu passado e o da humanidade. O artigo evoca reflexões sobre a epistemologia e a função social da arqueologia, destacando a relevância do estudo, a compreensão e a proteção dos testemunhos documentais, para garantir, assim, a sobrevivência do futuro de nosso passado, enquanto humanidade.
A atuação do secretário executivo na gestão de eventos
Authors: Roque Marinez Aparecida , Medeiros Loiva Maria Vidal
Published: August 2017

Este artigo teve como objetivo aprofundar o estudo teórico sobre a atuação do profissional de Secretariado Executivo na gestão de eventos, identificar se as empresas têm feito uso dessa gestão como forma de divulgar sua marca/produtos e se os secretários executivos se utilizam das técnicas da gestão bem como das normas de cerimonial, protocolo e etiqueta. Para o referencial, foi pesquisada a evolução da profissão bem como os conceitos relacionados a eventos e suas fases, normas de cerimonial, protocolo e etiqueta. Finalmente, pesquisou-se a atuação do profissional de Secretariado Executivo como gestor de eventos. Para atingir esse propósito, a abordagem metodológica utilizada foi a pesquisa quantitativa e qualitativa de caráter descritivo. Os dados primários foram coletados por meio da aplicação de um questionário. A população alvo deste estudo é composta por 31 estudantes e profissionais de Secretariado Executivo, que atuam em diversos segmentos na região metropolitana de Porto Alegre, RS. Os resultados

demonstraram que as empresas vêm fazendo uso dos eventos como forma de divulgação de sua marca/produtos, e o profissional de Secretariado Executivo tem atuado como gestor de eventos, fazendo uso de técnicas de gestão e das normas de protocolo, cerimonial e etiqueta, sendo valorizado nesta atuação.
EU, PROFESSOR DO MUNDO: A INTERCULTURALIDADE E AS PRÁTICAS REFLEXIVAS DE PROFESSORES DE LÍNGUAS DO UnB IDIOMAS
Authors: Eloy Carla Mary Silva , Silva Eduardo Dias da
Published: August 2017

Apresentamos neste artigo qualitativo de análise documental, um recorte dos profissionais de linguagem, nativos ou não, do Centro Universitário de Línguas da Universidade de Brasília (Programa Permanente de Extensão – UnB Idiomas), no entendimento da interculturalidade e práticas reflexivas no ambiente escolar como elementos essenciais para o ensino-aprendizagem de línguas estrangeiras (LE), tendo como base o período de 2010-2014. Após análises dos relatórios finais dos cursos, percebemos que o tanto o entendimento como a prática dos profissionais analisados refletem o trabalho/pesquisa desenvolvidos ao longo do período pelos supervisores acadêmicos do UnB Idiomas no que tange à formação continuada e em grupo assim como as observações e discussões coletivos visando, não só o melhoramento do Programa como também do aperfeiçoamento dos profissionais de LE do UnB Idiomas.
A REPRESENTAÇÃO DE EDUCAÇÃO LINGUÍSTICA DE IMIGRANTES NO BRASIL
Authors: Gotzinger Andressa Beatriz , Freitas de Luna José Marcelo
Published: August 2017

O presente artigo teve como objetivo explicar a representação de educação linguística de imigrantes no Brasil. A base teórica do estudo é a Historiografia Linguística (HL), cujas pesquisas visam à reconstrução do conhecimento sobre as línguas e linguagem humana em diferentes recortes temporais. Do tipo documental, o estudo tem como corpus as narrativas jornalísticas veiculadas durante o período de 1900 a 2015 na imprensa catarinense. Os jornais escolhidos como fontes para a obtenção dos dados foram: O Estado e Diário Catarinense. Adotou-se, para o tratamento dos dados, a técnica de análise de conteúdo. Os resultados foram analisados em três seções distintas. A primeira seção referiu-se ao período da Primeira Campanha de Nacionalização, na qual se discutiu a representação de educação linguística: escolas nacionalizadoras para assimilação do imigrante. A segunda referiu-se ao período da Segunda Campanha de Nacionalização, tendo como categorias: as práticas monoculturais e monolíngues nas escolas nacionalizadoras. A terceira intitulou-se a redemocratização, com as categorias: bilinguismo na escola e bilinguismo fora da escola. Os resultados indicam a superação de um passado em que se silenciava, por meio de medidas coercitivas, para dar lugar a um contexto em que se presenciam certa tolerância e proteção da diversidade linguístico-cultural existente no país.
IDENTIDADE E MEMÓRIA FRONTEIRIÇA: O CHIBO, TRABALHO DE SUBSISTÊNCIA OU PRÁTICA CULTURAL?
Authors: Palaoro Marilce Auxiliadora
Published: August 2017

Este artigo foi desenvolvido a partir das informações de quatro entrevistados de San Antonio-Argentina, quatro de Santo Antonio do Sudoeste-Brasil e de populares que moram próximo às margens do Rio Santo Antonio, que delimita a fronteira geográfica e política de ambos os países das duas localidades. O objetivo deste artigo é registrar a memória dos sujeitos fronteiriços identificando suas narrativas e socialidades, no que se refere aos “chibos” e “piques”. Para responder aos questionamentos da investigação foram usadas as entrevistas narrativas, a partir da alocução “ser fronteiriço é...”, e anotações no diário de campo da pesquisadora. Concluí que o local pesquisado é um espaço social formativo, em que os argentinos e brasileiros estabelecem trocas no cotidiano. A identidade se (re) afirma nas diferenças culturais dos sujeitos fronteiriços. A memória toma o papel de mediadora entre o passado e o presente que aflora nas narrativas dos entrevistados apresentando traços de hibridismo na linguagem e nas interações sociais próprias deste local de fronteira, e por meio das relações entre os chibeiros e  moradores das duas localidades estudadas.
Resenha: ROSA, Allan da. Pedagoginga, autonomia e mocambagem. Rio de Janeiro, Aeroplano, 2013
Authors: Silva Maurício
Published: August 2017

Resenha do livro: ROSA, Allan da. Pedagoginga, autonomia e mocambagem. Rio de Janeiro, Aeroplano, 2013
Análise comparativa dos efeitos da massoterapia e pompage cervical na dor e qualidade de vida em mulheres
Authors: Antunes Mateus Dias , Favoreto Amanda Bissi , Nakano Milena Satie , Morales Rosangela Cocco , Nascimento Junior José Roberto Andrade do , Oliveira Daniel Vicentini de , Bertolini Sonia Maria Marques Gomes
Published: August 2017

Objetivo: Comparar os efeitos da massoterapia e pompage cervical na dor e qualidade de vida de mulheres. Mtodo: Trata-se de um estudo quase experimental, no qual a amostra foi composta por 20 mulheres, entre 45 e 65 anos, divididas em dois grupos: 10 receberam massoterapia (Grupo A) e 10 receberam pompage (Grupo B), ambas as tcnicas na regio cervical. Para avaliao da dor foi a Escala Visual Analgica (EVA) e o Questionrio SF-36 para a qualidade de vida, antes e aps o perodo experimental. Resultados: na pompage houve diferena estatisticamente significante nos domnios Capacidade Funcional (p=0,003), Limitao por Aspecto Fsico (p=0,006), Vitalidade (p=0,004) e Aspecto Social (p=0,003) da qualidade de vida. J em relao ao grupo de massoterapia houve diferena apenas no domnio Dor (p=0,012). Concluso: a massoterapia promoveu melhora na dor e a pompage resultados mais significativos na qualidade de vida, sendo que ambas podem ser utilizadas para tratamento de cervicalgia.
Validade do perfil de atividade humana para estimar o consumo de oxigênio em atividades submáximas em hemiparéticos crônicos
Authors: Nunan Bruna Lima Costa Zuquim , Pereira Lorena Lima , Polese Janaine Cunha , Teixeira-Salmela Luci Fuscaldi
Published: August 2017

Introduo: Instrumentos validados so necessrios para a avaliao do consumo e gasto energtico de indivduos hemiparticos. Objetivo: Investigar a validade concorrente do Perfil de Atividade Humana (PAH) com as medidas diretas de consumo de oxignio (VO2) durante atividades submximas de hemiparticos crnicos. Mtodos: Estudo transversal. O VO2 foi avaliado atravs de ergoespirmetro porttil durante a marcha mxima, habitual e subir/descer escadas. O nvel de atividade fsica foi avaliado pelo PAH, questionrio de autorrelato. Utilizou-se para a anlise o Escore Ajustado de Atividade (EAA). Resultados: 55 indivduos participaram do estudo. Observou-se existir correlao estatisticamente significativa, positiva de magnitude fraca entre o EAA do PAH e VO2 na marcha mxima (r=0,37; p=0,009), e de magnitude moderada na marcha habitual (r=0,40; p=0,004) e no teste de subir/descer escadas (r=0,43; p=0,004). Concluso: Os resultados demonstraram associao entre as medidas autorrelatadas e VO2 em atividades submximas.
ANDRÉ BELLEAU, LECTEUR DE NORBERT WIENER
Authors: CHASSAY JEAN-FRANÇOIS
Published: August 2017

On connaît peu l’intérêt porté par André Belleau aux robots et aux automates, et surtout à une science en devenir au moment où il y portait son attention, la cybernétique. Cet article se penche sur une série de vingt-six émissions radiophoniques que l’essayiste a préparée pour la radio de Radio-Canada, diffusée entre novembre 1967 et avril 1968, et surtout sur un court texte intitulé « Wiener et McLuhan », qui rend compte de son intérêt pour les travaux et l’écriture du mathématicien Norbert Wiener, fondateur de cette science dans les années 1940.
ANDRÉ BELLEAU À LA RADIO OU LA THÉORIE LITTÉRAIRE DIALOGUÉE
Authors: CAMBRON MICHELINE
Published: August 2017

André Belleau a publié d’importants travaux sur des questions de théorie littéraire. La série d’émissions « Regards neufs sur la littérature » (Radio-Canada, 1975), constituée d’entrevues avec d’éminents critiques : Fayolle, Genette, Todorov, Deguy, Cohen, Leenhardt, Barbéris, Richard, Starobinski, Robert et Jauss, témoigne du caractère profondément heuristique de la démarche de Belleau. Nous nous intéressons à la conception de la littérature qui est construite au fil de ces émissions, à leur caractère dialogique, dans l’esprit de Bakhtine, et aux enjeux théoriques explicités par André Belleau. La dimension dialogique de l’émission favorisant le travail sur le doute, les ambiguïtés et les apories y trouvent un lieu d’expression qui permet de passer d’une historicité qui sert d’horizon sur lequel projeter le travail sur les discours à une historicité qui sert d’ancrage à la subjectivité qui s’y trouve engagée. Nous montrons ainsi le rôle joué par André Belleau à titre de passeur littéraire, mais aussi l’originalité de sa pensée au moment où triomphe un certain structuralisme.
DOUZE TEXTES BREFS SUR BELLEAU
Authors: LACROIX MICHEL
Published: August 2017

Saisir Belleau dans sa dispersion même, sa résistance à la totalisation et aux conclusions : tel est l’objectif de cet article, qui examine entre autres son rapport à l’administration, à la bourgeoisie, au code et à l’espace de la rue. Pour ce faire, ses textes publiés et inédits, essais, cahiers et poèmes sont examinés. On y découvre un Belleau lecteur, constamment prêt à faire « le saut herméneutique », à relancer l’interprétation, conçue comme aventure, ébranlement, indéfiniment.
The Effect of Elevation on Volumetric Measurements of the Lower Extremity
Authors: Gillette Cordial M. , Doberstein Scott T. , DeSerano Danielle L. , Linnell Eric J.
Published: August 2017

Background: The empirical evidence for the use of RICE (rest, ice, compression, elevation) has been questioned regarding its   clinical effectiveness. The component of RICE that has the least literature regarding its effectiveness is elevation. Objective: The objective of this study was to determine if various positions of elevation result in volumetric changes of the lower extremity. Methodology: A randomized crossover design was used to determine the effects of the four following conditions on volumetric changes of the lower extremity: seated at the end of a table (seated), lying supine (flat), lying supine with the foot elevated 12 inches off the table (elevated), and lying prone with the knees bent to 90 degrees (prone). The conditions were randomized using a Latin Square. Each subject completed all conditions with at least 24 hours between each session. Pre and post volumetric measurements were taken using a volumetric tank. The subject was placed in one of the four described testing positions for 30 minutes. The change in weight of the displaced water was the main outcome measure. The data was analyzed using an ANOVA of the pre and post measurements with a Bonferroni post hoc analysis. The level of significance was set at P<.05 for all analyses. Results: The only statistically significant difference was between the gravity dependent position (seated) and all other positions (p <.001). There was no significant difference between lying supine (flat), on a bolster (elevated), or prone with the knees flexed to 90 degrees (prone). Conclusions: From these results, the extent of elevation does not appear to have an effect on changes in low leg volume. Elevation above the heart did not significantly improve reduction in limb volume, but removing the limb from a gravity dependent position might be beneficial.
Leveling the Playing Field: Assessment of Gross Motor Skills in Low Socioeconomic Children to their Higher Socioeconomic Counterparts
Authors: Adkins Megan M. , Bice Matthew R. , Dinkel Danae , Rech John P.
Published: August 2017

Background: Fundamental movements (FM) of children influence the willingness to engage in physical activity (PA). Thus, proper FM skills are the foundation for a lifespan of PA. Objective: This study examined what factors may affect children’s PA in relation to FM pattern capabilities. Methods: The study examined the influence of SES when three low-income schools were provided additional PA opportunities on days PE was not taught. FM patterns in relation to object control (OC) and locomotor skill (LC) development were evaluated on K (n = 871), 1st (n = 893), and 2nd graders (n = 829) using the Test of Gross Motor Development-2 (TGMD-2) instrument (Ulrich, 2000). Schools were dichotomized and categorized as being low SES (n = 2008) and high SES (n = 578) status. Results: A significant relationship was revealed with LC (r = 0.264; p = 0.001), OC (r = 0.171; p = 0.001), and total TGMD-2 (r = 0.264; p = 0.001). Low and high SES schools significantly improved overall TGMD-2 scores. High SES schools children were significantly higher in LC [F, (2, 1272) = 29.31, p = 0.001], OC [F, (2, 1272) = 23.14, p = 0.001], and total TGMD-2 [F, (1, 1272) = 38.11, p = 0.001]. Conclusion: Low SES schools need to concentrate on PA-based activities to engage students in FM patterns, to help narrow the gap in FM capabilities. In addition, the increase in PA opportunities for lower SES schools could positively impact brain function, cardiovascular fitness, and overall well-being.
Current Evidence of Gait Modification with Real-time Biofeedback to Alter Kinetic, Temporospatial, and Function-Related Outcomes: A Review
Authors: Eddo Oladipo , Lindsey Bryndan , Caswell Shane V. , Cortes Nelson
Published: August 2017

Background: Gait retraining using real-time biofeedback (RTB) may have positive outcomes in decreasing knee adduction moment (KAM) in healthy individuals and has shown equal likelihood in patients with knee osteoarthritis (OA). Currently, there is no consensus regarding the most effective gait modification strategy, mode of biofeedback or treatment dosage. Objective: The purpose of this review was: i) to assess if gait retraining interventions using RTB are valuable to reduce KAM, pain, and improve function in individuals with knee osteoarthritis, ii) to evaluate the effectiveness of different gait modifications and modes of RTB in reducing KAM in healthy individuals, and iii) to assess the impact of gait retraining interventions with RTB on other variables that may affect clinical outcomes. Methods: Seven electronic databases were searched using five search terms. Studies that utilized any form of gait retraining with RTB to improve one or a combination of the following measures were included: KAM, knee pain, and function. Twelve studies met the inclusion criteria, evaluating eleven distinctive gait modifications and three modes of RTB. Results: All but one study showed positive outcomes. Self-selected and multi-parameter gait modifications showed the greatest reductions in KAM with visual and haptic RTB being more effective than auditory. Conclusions: Current evidence suggests that gait modification using RTB can Positively alter KAM in asymptomatic and symptomatic participants. However, the existing literature is limited and of low quality, with the optimal combination strategies remaining unclear (gait and biofeedback mode). Future studies should employ randomized controlled study designs to compare the effects of different gait modification strategies and biofeedback modes on individuals with knee OA.
Vegetation responses to season of fire in an aseasonal, fire-prone fynbos shrubland
Authors: Kraaij Tineke , Cowling Richard M. , van Wilgen Brian W. , Rikhotso Diba R. , Difford Mark
Published: August 2017

Season of fire has marked effects on floristic composition in fire-prone Mediterranean-climate shrublands. In these winter-rainfall systems, summer-autumn fires lead to optimal recruitment of overstorey proteoid shrubs (non-sprouting, slow-maturing, serotinous Proteaceae) which are important to the conservation of floral diversity. We explored whether fire season has similar effects on early establishment of five proteoid species in the eastern coastal part of the Cape Floral Kingdom (South Africa) where rainfall occurs year-round and where weather conducive to fire and the actual incidence of fire are largely aseasonal. We surveyed recruitment success (ratio of post-fire recruits to pre-fire parents) of proteoids after fires in different seasons. We also planted proteoid seeds into exclosures, designed to prevent predation by small mammals and birds, in cleared (intended to simulate fire) fynbos shrublands at different sites in each of four seasons and monitored their germination and survival to one year post-planting (hereafter termed ‘recruitment’). Factors (in decreasing order of importance) affecting recruitment success in the post-fire surveys were species, pre-fire parent density, post-fire age of the vegetation at the time of assessment, and fire season, whereas rainfall (for six months post-fire) and fire return interval (>7 years) had little effect. In the seed-planting experiment, germination occurred during the cooler months and mostly within two months of planting, except for summer-plantings, which took 2–3 months longer to germinate. Although recruitment success differed significantly among planting seasons, sites and species, significant interactions occurred among the experimental factors. In both the post-fire surveys and seed planting experiment, recruitment success in relation to fire- or planting season varied greatly within and among species and sites. Results of these two datasets were furthermore inconsistent, suggesting that proteoid recruitment responses are not related to the season of fire. Germination appeared less rainfall-dependent than in winter-rainfall shrublands, suggesting that summer drought-avoiding dormancy is limited and has less influence on variation in recruitment success among fire seasons. The varied response of proteoid recruitment to fire season (or its simulation) implies that burning does not have to be restricted to particular seasons in eastern coastal fynbos, affording more flexibility for fire management than in shrublands associated with winter rainfall.
Periodontal inflammatory disease is associated with the risk of Parkinson’s disease: a population-based retrospective matched-cohort study
Authors: Chen Chang-Kai , Wu Yung-Tsan , Chang Yu-Chao
Published: August 2017

Background

The cause−effect relation between periodontal inflammatory disease (PID) and Parkinson’s disease (PD) remains uncertain. The purpose of our study was to investigate the association between PID and PD.

Methods

We conducted a retrospective matched-cohort study by using Taiwan’s National Health Insurance Research Database. We identified 5,396 patients with newly diagnosed PID during 1997–2004 and 10,792 cases without PID by matching sex, age, index of year (occurrence of PID), and comorbidity. Cox proportional hazard regression was used to evaluate the risk of subsequent PD.

Results

At the final follow-up, a total of 176 (3.26%) and 275 (2.55%) individuals developed PD in the case and control groups, respectively. Patients with PID have a higher risk of developing PD (adjusted hazard ratio = 1.431, 95% CI [1.141–1.794], p = 0.002).

Discussion

Our results show that PID is associated with an increased risk of developing PD. Whilst these findings suggest that reducing PID may modify the risk of developing PD, further study will be needed.
Textural characterization of beach sands from the Gulf of California, Mexico: implications for coastal processes and relief
Authors: Kasper-Zubillaga JJ , Carranza-Edwards A , Morales-De la Garza E
Published: August 2017

Grain size determinations were carried out for 54 beach-sand samples from the western (n = 25) and eastern (n = 29) coasts of the Gulf of California, Mexico, in order to establish the relationship among coastal processes, relief, and grain size parameters for both areas based on grain size distributions. This was done because both coastal areas are controlled by marine processes and the geomorphology of the coast, since fluvial discharges are negligible in the distribution of sands. In general, sands from the western coast are mainly coarse, moderately sorted, near-symmetrical with leptokurtic and very leptokurtic distributions. Correlations between grain-size parameters for the western coast are controlled by less selectivity in the coastal processes to concentrate fractions in a specific range of sizes, a narrow coastal plain, and compositional differences in the sands due to the heterogeneous lithology and the presence of carbonate shells. Eastern coast beach sands are medium, moderately well sorted, near-symmetrical with mesokurtic to leptokurtic distributions. Correlations between grain size parameters for the eastern coast are controlled by longshore current drifts in a northwestern direction and a wider coastal plain compared to the western coast.
Accumulation of Corg, Norg, Porg and BSi off the Magdalena, BCS, (México) during the past 26 kyr
Authors: Sánchez A , Carriquiry JD
Published: August 2017

The rates of accumulation of organic carbon, nitrogen and phosphorus (Corg, Norg, Porg), and of biogenic silica (BSi) were measured in sediment cores (GC31 and PC08) collected within the oxygen minimum zone of the Magdalena margin, off western Baja California Sur (Mexico). The rates of Corg, Norg and Porg accumulation were similar during marine isotopic stage 2 (MIS-2), the last glacial maximum (LGM) and the Late Holocene (LH, 3 kyr–Recent), whereas the rate of BSi accumulation was greater during LGM and MIS-2 than during LH. In general, primary productivity during the MIS-2 and the LGM was similar to that observed during LH. The N/P ratio during the MIS-2 and the LGM was equivalent to that found during LH, suggesting that N and P were not limiting factors. In fact, the BSi/C ratio was relatively high (intense upwelling) when the N/P ratio was relatively low, indicating similar levels of primary productivity during the MIS-2, the LGM and LH. The results show that the productivity levels during LH are characteristic, at least, of those that existed during the MIS-2. This indicates that the wind system has persisted since then, favouring an Ekman transport along the coast of California and Baja California, generating diatomdominated primary productivity.
Distribution of necrotizing hepatopancreatitis bacterium (NHPB) in cultured white shrimp, Litopenaeus vannamei, from Mexico
Authors: Ibarra-Gámez JC , Galavíz-Silva L , Molina-Garza ZJ
Published: August 2017

This paper describes the first systematic monitoring conducted in 2002 at shrimp farms in Sinaloa and Sonora (Mexico) for the presumptive and confirmative diagnosis of necrotizing hepatopancreatitis bacterium (NHPB) in Litopenaeus vannamei. Light microscopy (wet mounts and hematoxilin-eosin-stained sections of hepatopancreas) showed atrophy of the hepatopancreas, strangulation and necrosis of the hepatopancreatic tubules, with masses of NHPB within the tubular epithelium, hemocytic infiltrates and tubular melanization. The gene encoding the 16S rRNA (16S rDNA) of NHPB was amplified by polymerase chain reaction (PCR) from clinical specimens and the bacteria isolated using Percoll density gradient centrifugation. Negative-stain transmission electron microscopy revealed pleomorphic bacteria, most of them ovoid or rod-shaped (0.2 µm wide and 0.6–0.9 µm long), and a helical form demonstrating seven to twelve spiral turns (0.23 µm wide and 2.43–5.27 µm long). Several severe epizootics of commercially grown L. vannamei occurred during the study period and the mortality was attributed to NHPB infection. Using PCR and microbiological analyses, other etiologic agents, such as white spot syndrome virus, infectious hypodermal and hematopoietic necrosis virus, hepatopancreatic parvovirus and vibriosis, were ruled out as contributory factors.
Internal tide in the northwestern part of Banderas Bay, Mexico
Authors: Plata-Rosas L , Filonov A
Published: August 2017

Se discuten los resultados de un experimento especial de medición de parámetros espaciotemporales de las ondas internas en la ancha plataforma continental de la parte noroeste de la Bahía de Banderas. Las mediciones oceanográficas consistieron en: (a) un levantamiento rápido con un CTD ondulante a lo largo de un transecto perpendicular a la costa, (b) el remolque de una cadena de sensores de temperatura y profundidad repetidas veces sobre la plataforma continental por transectos perpendiculares a la costa y (c) series de tiempo de componentes de velocidad registradas con un perfilador de corrientes acústico Doppler colocado en el fondo de la bahía, a una profundidad de 28 m. Se determinó la presencia de ondas internas generadas por la marea semidiurna, con características correspondientes al segundo modo normal de oscilación de acuerdo con la teoría lineal de ondas internas. El análisis de los datos obtenidos mostró que, en el área de estudio, las ondas internas generadas en el talud continental por la marea barotrópica tienen la forma de un bore oscilatorio; durante su propagación hacia la costa, éste se desintegra rápidamente, dando lugar a grupos de ondas cortas no lineales que se disipan cerca de la costa y provocan una mezcla intensa en toda la columna del agua. La interpretación de los resultados fue realizada con base en las teorías lineal y no lineal (ecuación de Korteweg-de Vries) de ondas internas.

The results of a special experiment measuring the spatiotemporal parameters of internal waves on the wide continental shelf of northwestern Banderas Bay (Mexico) are discussed. The oceanographical measurements consisted of: (a) a fast survey with an undulating CTD along a transect perpendicular to the coast, (b) the towing of an array of temperature and depth sensors several times over the continental shelf along transects perpendicular to the coast, and (c) time series of velocity components registered by an acoustic Doppler current profiler placed on the seabed of the bay at 28 m depth. The presence of internal waves generated by semidiurnal tides and corresponding to the second normal oscillation mode (according to the linear theory of internal waves) was determined. Analysis of the data showed that, in the study area, the internal waves generated over the continental slope by the barotropic tide have the shape of an oscillatory bore, which quickly disintegrates during their propagation shoreward, producing short nonlinear waves that dissipate close to the coast and intense vertical mixing of the whole water column. The interpretation of the results was based on the linear and nonlinear (Korteweg-de Vries equation) theories of internal waves.
Temporal variation in the abundance of postlarval and juvenile blue shrimp (Litopenaeus stylirostris) and brown shrimp (Farfantepenaeus californiensis) in the Colorado River estuary
Authors: Galindo-Bect MS , Page HM , Petty RL , Hernández-Ayón JM , Aragón-Noriega EA , Bustos-Serrano H
Published: August 2017

The temporal variation in the abundance and species composition of penaeid shrimp postlarvae and juveniles was studied in a tidal channel of the Colorado River estuary. Biweekly sampling during flood and ebb tide was conducted from March through November 2000. Postlarvae of the blue shrimp, Litopenaeus stylirostris, were observed beginning in May, with highest densities in early June during flood tide. A much smaller peak in densities occurred in late September, with few postlarvae found in October and November. Juvenile L. stylirostris were present in highest densities during ebb tide in mid-June, with smaller peaks in mid-July and late September. Densities of postlarval and juvenile brown shrimp, Farfantepenaeus californiensis, were much lower than those of L. stylirostris and without clearly defined peaks. The growth rate of juvenile L. stylirostris appeared similar to rates (30–60 mm month–1) reported for penaeid shrimp from the Pacific Ocean, Gulf of Mexico, and Australia. Management decisions affecting the Upper Gulf of California and Colorado River Delta Biosphere Reserve need to be cognizant of the importance of May and June as critical months in the use of the estuarine tidal channels by these commercially important species.
Imposex in gastropods from Venezuela
Authors: Miloslavich P , Penchaszadeh PE , Bigatti G
Published: August 2017

The imposex phenomenon is a superimposition of male characters on gastropod females due to exposure to tributyltin (TBT). There have been no previous reports of this phenomenon in the southern Caribbean, which is inhabited by some edible and commercially exploited gastropod populations. To determine whether imposex is affecting some of these local gastropod populations, surveys were conducted at several sites with different levels of boating activity around Margarita Island and on the continental coast of Venezuela. The species affected were Chicoreus brevifrons, Chicoreus (Phylonotus) margaritensis and Leucozonia nasa; however, no females with obstructed vagina were observed. Imposex was observed in a coastal lagoon and on the coast at sites characterized by medium to high boat concentrations, but was not detected in open waters with low marine traffic. A survey of local boat operators indicated that the use of TBT had stopped 2–3 years prior to this study and had been replaced by regular application of other antifouling paints. This is the first report of imposex in Venezuela, but further studies incorporating the bioindicators identified here are needed in order to determine the full extent of TBT contamination and the biological implications in zones with marine traffic. Key words: edible gastropods, TBT, marine pollution, imposex, southern Caribbean.
Comparative study on bioaccumulation of lead and cadmium by the cyanobacterium Synechocystis sp. PCC 6803 under laboratory conditions
Authors: Arunakumara KKIU , Xuecheng Z , Song X
Published: August 2017

Bioremoval techniques have been employed in cleaning water bodies that suffer from detrimental effects of heavy metal pollution. In the present laboratory study, bioaccumulation of Pb2+ and Cd2+ was assessed using the unicellular cyanobacterium Synechocystis sp. PCC 6803, a model organism widely used in genetic, physiological and morphological studies. Growth was measured as cell counts and showed that Pb2+, at low exposure concentrations (0.5 and 1 µg mL–1), had a positive influence on Synechocystis sp. PCC 6803, resulting in slight growth stimulations; however, the species could not withstand long periods of exposure to both metals at higher concentrations (2, 4, 6 and 8 µg mL–1). The highest inhibitions (53.14% and 70.07% for Pb2+ and Cd2+, respectively, at 8 µg mL–1) were recorded after six days. Rapid metal removal was observed during the first two days of incubation, followed by a gradual reduction. Though the differences in accumulated amounts seemed to be narrow, the percentage of Pb2+ removed from the solution was always higher than that of Cd2+ in all the treatments. Accumulated amounts increased in a dose-dependent manner for both metals. The maximum accumulations (155.63 and 199.83 mg g–1 dry weight for Pb2+ and Cd2+, respectively) were recorded at the end of six days. The species can be considered a good accumulator of metals, with high bioconcentration factor values of 20 657 and 24 980 for Pb2+ and Cd2+, respectively.
Nanoplankton fraction in the phytoplankton structure in the southern Gulf of Mexico (April 2000)
Authors: Hernández-Becerril DU , García-Reséndiz JA , Salas-de León DA , Monreal-Gómez MA , Signoret-Poillon M , Aldeco-Ramírez J
Published: August 2017

Phytoplankton, especially the nanoplankton fraction, and its possible relationships with the hydrographic conditions in the southern Gulf of Mexico were studied during an oceanographic cruise in April 2000. Hydrographic data and phytoplankton were analyzed. Phytoplankton species composition showed heterogeneity among stations. A total of 180 species were found: 114 diatoms, 32 dinoflagellates, 32 coccolithophores, and 2 silicoflagellates. Diversity indices were variable (0.96–5.12 bits ind–1). Phytoplankton was numerically dominated by coccolithophores or nanoplanktonic diatoms. Cell abundance was low to moderately high, ranging from 5.3 × 103 to 1.4 × 105 cells L–1. The most abundant, dominant species were nanoplanktonic forms: two coccolithophores, Emiliania huxleyi and Gephyrocapsa oceanica; the pennate diatoms Nitzschia bicapitata, N. bifurcata and N. leehyi; and centric diatoms of the genus Thalassiosira. The high subsurface abundance of coccolithophores at two stations was related to a thermal front in the Grijalva-Usumacinta river system.
Evaluation of the metastatic potential of malignant cells by image processing of digital holographic microscopy data
Authors: Calin Violeta L. , Mihailescu Mona , Scarlat Eugen I. , Baluta Alexandra V. , Calin Daniel , Kovacs Eugenia , Savopol Tudor , Moisescu Mihaela G.
Published: August 2017

The cell refractive index has been proposed as a putative cancer biomarker of great potential, being correlated with cell content and morphology, cell division rate and membrane permeability. We used digital holographic microscopy to compare the refractive index and dry mass density of two B16 murine melanoma sublines of different metastatic potential. Using statistical methods, the distribution of phase shifts within the reconstructed quantitative phase images was analyzed by the method of bimodality coefficients. The observed correlation of refractive index, dry mass density and bimodality profile with the metastatic potential of the cells was validated by real time impedance‐based assay and clonogenic tests. We suggest that the refractive index and bimodality analysis of quantitative phase image histograms could be developed as optical biomarkers useful in label‐free detection and quantitative evaluation of cell metastatic potential.
Work of Adhesion Measurements of MoS2 Dry Lubricated 440C Stainless Steel Tribological Contacts
Authors: Pajovic Simo , Colas Guillaume , Saulot Aurélien , Renouf Mathieu , Filleter Tobin
Published: August 2017

The tribological behavior of dry lubricants depends on their mechanical and physicochemical environment, making it difficult to predict in practice. Discrete Element Method‐based modeling has been one successful approach to provide valuable insight into the tribology of dry lubricated contacts. However, it requires well‐defined interactions between discrete elements, in particular between those simulating different materials. Measuring the properties governing those interactions, such as the work of adhesion (W), is therefore critical. The present work describes a method for measuring the W between AISI440C steel and MoS2‐based coatings used in spacecraft. Using Atomic Force Microscopy local asperity and adhesion measurements, the W between steel microbeads and MoS2 coatings is determined at different stages in its wear life. The distributions of W values in the worn coatings and pristine coatings agree well with earlier Time‐of‐Flight Secondary Ion Mass Spectroscopy studies on the physicochemistry of the samples, as well as contact angle measurements. Additional measurements between the same materials on a ball bearing from a real life‐test unit of a spacecraft instrument also show a similar W distribution, suggesting that the approach used here provides relevant data for use in numerical simulations.