GESTÃO DE UM CENTRO DE ENSINO A DISTÂNCIA E O USO DE TECNOLOGIAS DE INFORMAÇÃO E COMUNICAÇÃO: ESTUDO DE CASO DE UMA UNIVERSIDADE PÚBLICA FEDERAL NO BRASIL

As possibilidades do mundo online, atreladas às mudanças socioculturais, potencializaram a criação de cursos de graduação e pós-graduação semipresenciais, os cursos EAD e, nesse caminho, o governo federal do Brasil expandiu suas ações com a criação da Universidade Aberta do Brasil - UAB (2005). No projeto da UAB, estabelecem-se parcerias entre o governo federal, universidades públicas e municípios (mantenedores dos polos presenciais). No âmbito das universidades, criaram-se centros, secretarias ou similares para gerir tais cursos (aspectos pedagógicos, tecnológicos e administrativos), conjuntamente à administração central, entretanto, é uma nova realidade de gestão, pouco estabelecida, que demanda novas formas de ver a gestão, os processos, a comunicação e o trabalho colaborativo entre os parceiros, demandando a definição clara dos procedimentos de gestão, além da escolha, sistematização e desenvolvimento de ferramentas digitais para gestão, adequados à realidade da UAB. Neste estudo de caso, percebeu-se ser possível utilizar ferramentas pré-existentes que, em princípio, não possuem caráter de gestão, entretanto, dado a polifonia destes, repensa-se seus usos em uma nova proposta que integre as informações, agilize os processos de envio e busca de dados e conecte os diversos envolvidos nos processos de forma transparente e eficiente

Isomer-specific product detection of gas-phase xylyl radical rearrangement and decomposition using VUV synchrotron photoionization

Xylyl radicals are intermediates in combustion processes since their parent molecules, xylenes, are present as fuel additives. In this study we report on the photoelectron spectra of the three isomeric xylyl radicals and the subsequent decomposition reactions of the o-xylyl radical, generated in a tubular reactor and probed by mass selected threshold photoelectron spectroscopy and VUV synchrotron radiation. Franck-Condon simulations are applied to augment the assignment of elusive species. Below 1000 K, o-xylyl radicals decompose by hydrogen atom loss to form closed-shell o-xylylene, which equilibrates with benzocyclobutene. At higher temperatures relevant to combustion engines, o-xylylene generates styrene in a multistep rearrangement, whereas the p-xylylene isomer is thermally stable, a key point of difference in the combustion of these two isomeric fuels. Another striking result is that all three xylyl isomers can generate p-xylylene upon decomposition. In addition to C8H8 isomers, phenylacetylene and traces of benzocyclobutadiene are observed and identified as further reaction products of o-xylylene, while there is also some preliminary evidence for benzene and benzyne formation. The experimental results reported here are complemented by a comprehensive theoretical C8H8 potential energy surface, which together with the spectroscopic assignments can explain the complex high-temperature chemistry of o-xylyl radicals

Quando a Biologia encontra a Geologia: possibilidades interdisciplinares entre áreas

O trabalho interdisciplinar é um desafio apresentado para todos professores, dos diversos níveis de ensino e para ser exercido exige o diálogo entre as áreas diversas. Neste trabalho, apresentamos algumas possibilidades interdisciplinares entre a Biologia e a Geologia, a partir da disciplina Elementos de Geologia, para o curso de Licenciatura em Ciências Biológicas. Os apontamentos feitos nesse artigo surgiram devido à nossa participação nessa disciplina no "Programa de Estágio Docente", onde atuamos como professores colaboradores. Além de defendermos a prática interdisciplinar, enfocamos o homem como agente geo-biológico, na tentativa de compreendê-lo como um dos agentes que atuam nas constantes modificações do planeta. Essa é uma perspectiva que deve permear todo o ensino de ciências, visando uma boa compreensão da atuação humana nos processos evolutivos da Terra. Apresentamos, ainda, a estrutura da disciplina a que se refere esse artigo para, em seguida, lançarmos algumas das possíveis interfaces entre as duas áreas

Magnetic flux jumps in textured Bi2Sr2CaCu2O(8+d)

Magnetic flux jumps in textured Bi2Sr2CaCu2O(8+d) have been studied by means of magnetization measurements in the temperature range between 1.95 K and Tc, in an external magnetic field up to 9 T. Flux jumps were found in the temperature range 1.95 K - 6 K, with the external magnetic field parallel to the c axis of the investigated sample. The effect of sample history on magnetic flux jumping was studied and it was found to be well accounted for by the available theoretical models. The magnetic field sweep rate strongly influences the flux jumping and this effect was interpreted in terms of the influence of both flux creep and the thermal environment of the sample. Strong flux creep was found in the temperature and magnetic field range where flux jumps occur suggesting a relationship between the two. The heat exchange conditions between the sample and the experimental environment also influence the flux jumping behavior. Both these effects stabilize the sample against flux instabilities, and this stabilizing effect increases with decreasing magnetic field sweep rate. Demagnetizing effects are also shown to have a significant influence on flux jumping.Comment: 10 pages, 6 figures, RevTeX4, submitted to Phys. Rev.

Identification of pesticide-degrading Pseudomonas strains as poly-β-hydroxybutyrate producers

Polyhydroxybutyrate (PHB) is an ecological promising substitute for polypropylene because it is biocompatible, biodegradable and can be produced by renewable sources. This study investigated PHB accumulation on pesticide-degrading Pseudomonas. 14 strains of pesticide-degrading Pseudomonas isolated from subtropical lowland soil in southern Brazil were analyzed using optical microscopy. Lipid inclusions were identified in four strains, and three of them, which degraded the pesticide carbofuran, had extensive granules accumulation which was detected by transmission electron microscopy. These strains were cultivated in a shaker at 28°C and the polymer was characterized by Fourier transform infrared (FTIR) spectroscopy. Strain CMM43 had the best accumulation after 48 h. The biopolymer was identified as poly-β-hydroxybutyrate.Key words: Polyhydroxybutyrate (PHB), pesticide-degrading Pseudomonas sp., microscopy, subtropical lowland soil

Vegetation and seed bank of an open-scrub bush restinga formation in the southeastern coast of Brazil

Restingas are coastal plain ecosystems located along Eastern Brazil, corresponding to about 5 000 km. The restinga vegetation is associated with the Atlantic rainforest biome and comprises four distinct main formation zones: coastal grasslands, shrublands, open-forests and marsh zones. Especially due to coastal urbanization, this is a threatened ecosystem that, through its different shrub formations, exhibits a unique mosaic as a result of the vegetation distribution in nuclei of different covering, physiognomy and floristic composition. Objective: We aimed to characterize the above and belowground composition of a conserved, non-flooded, open-scrub, nuclei (patches of bushes) formation of restinga in Linhares, ES, southeastern Brazil. Methods: The vegetation survey was conducted using the line intercept method. Diameter and height of the first six nuclei were measured in five transects separated by 50 m, totaling 30 nuclei up to 350 m away from the shore line. The phytosociology and Shannon Index of the aboveground vegetation community were calculated. In the same 30 nuclei, leaf litter and topsoil layer (15 x 15 x 10 cm) samples were collected to survey the viable seed bank, which was later placed in a greenhouse for germination and seedling identification. The Sørensen Similarity index (SSi) was used to compare the floristic composition between the leaf litter and topsoil layer seed banks. Nuclei volume and number of species were calculated as well. Results: In the aboveground vegetation, 54 plant species belonging to 32 families were identified, totaling 1 098 individuals. The nuclei showed a diversity (H’) of 3.08 nats, and an average diameter of 11.5 m (s = 9.1), area of 526.4 m2 (s = 1 081.7), and height of 2.9 m (s = 1.1). Davilla flexuosa, followed by Smilax rufescens, presented the highest IVI (Importance Value Index). A total of 1 839 seedlings from 32 species and 19 families were identified in the seed bank. Enydra sessilis (Asteraceae) had the highest seed density (544), while the family with highest species richness was Cyperaceae. A low similarity between the vegetation surveyed and the seed bank composition was found (only 5 species in common, SSi = 0.10). Conclusions: The results indicate that a post-disturbance early community, established from the seed bank, would have a substantially different species composition, but with other potential species to restore vegetation over the long-term succession.Las restingas son ecosistemas llanos costeros ubicados a lo largo del este de Brasil, que corresponden a unos 5 000 km de la costa atlántica brasileña. La vegetación de restinga está asociada con el bioma de la selva tropical atlántica y comprende cuatro zonas de formación principales: praderas costeras, matorrales, bosques abiertos y zonas pantanosas. Especialmente debido a la urbanización costera, este es un ecosistema amenazado, que, a través de sus formaciones arbustivas, exhibe un mosaico único, como resultado de la distribución de la vegetación en núcleos de diferentes coberturas, fisonomía y composición florística. Objetivo: Caracterizar la composición florística superficial y subterránea de una formación conservada, no inundada, de núcleos de matorral abierto de restinga en Linhares, ES, costa del sureste de Brasil. Métodos: La vegetación se muestreó utilizando el método de la línea de intercepción. El diámetro y la altura de los primeros seis núcleos se midieron en cinco transectos instalados cada 50 m, con un total de 30 núcleos distantes hasta 350 m de la línea de costa. Se muestreó la comunidad de vegetación y se calculó su fitosociología e índice de Shannon. En los mismos 30 núcleos, se recogió la hojarasca más la capa superior del suelo (15 x 15 x 10 cm) para examinar el banco de semillas viable, que luego se colocó en un invernadero para germinar e identificar las plántulas. El índice de similitud de Sørensen se usó para comparar la composición florística entre la hojarasca y el banco de semillas de la capa superficial del suelo y también se calculó la regresión entre el volumen del núcleo y el número de especies. Resultados: En la vegetación superficial se identificaron 54 especies de plantas pertenecientes a 32 familias, con un total de 1 098 plantas. Los núcleos registraron una diversidad (H’) de 3.08 nats, y un diámetro promedio de 11.5 m (s = 9.1), área de 526.4 m² (s = 1 081.7) y altura de 2.9 m (s = 1.1). Davilla flexuosa, seguida de Smilax rufescens, presentó el VI (Valor de Importancia) más alto. Se identificaron un total de 1 839 plántulas de 32 especies y 19 familias en el banco de semillas. Enydra sessilis (Asteraceae) tuvo la mayor densidad de semillas viables (544), pero la familia con mayor riqueza de especies fue Cyperaceae. Se encontró una baja similitud entre la vegetación y la composición del banco de semillas (solo 5 especies en común, índice de Sørensen = 0.10). Conclusiones: Los resultados indican que una comunidad recién establecida después de una alteración podría tener una composición de especies sustancialmente diferente, pero con otras especies potenciales para restaurar la vegetación a largo plazo.info:eu-repo/semantics/publishedVersio

Yours ever (well, maybe): Studies and signposts in letter writing

Electronic mail and other digital communications technologies seemingly threaten to end the era of handwritten and typed letters, now affectionately seen as part of snail mail. In this essay, I analyze a group of popular and scholarly studies about letter writing-including examples of pundits critiquing the use of e-mail, etiquette manuals advising why the handwritten letter still possesses value, historians and literary scholars studying the role of letters in the past and what it tells us about our present attitudes about digital communications technologies, and futurists predicting how we will function as personal archivists maintaining every document including e-mail. These are useful guideposts for archivists, providing both a sense of the present and the past in the role, value and nature of letters and their successors. They also provide insights into how such documents should be studied, expanding our gaze beyond the particular letters, to the tools used to create them and the traditions dictating their form and function. We also can discern a role for archivists, both for contributing to the literature about documents and in using these studies and commentaries, suggesting not a new disciplinary realm but opportunities for new interdisciplinary work. Examining a documentary form makes us more sensitive to both the innovations and traditions as it shifts from the analog to the digital; we can learn not to be caught up in hysteria or nostalgia about one form over another and archivists can learn about what they might expect in their labors to document society and its institutions. At one time, paper was part of an innovative technology, with roles very similar to the Internet and e-mail today. It may be that the shifts are far less revolutionary than is often assumed. Reading such works also suggests, finally, that archivists ought to rethink how they view their own knowledge and how it is constructed and used. © 2010 Springer Science+Business Media B.V

AÇÕES EDUCATIVAS DE ASSISTÊNCIA EM ENFERMAGEM EM AMBIENTE HOSPITALAR: A ATENÇÃO A PAIS E FAMILIARES DE NEONATOS EM FOTOTERAPIA

A educação em saúde é compreendida hoje como uma importante ferramenta para a transformação do fazer dos profissionais dessa área, bem como, para a transformação das realidades vivenciadas. Ela, quando trabalhada de forma a compartilhar a responsabilidade pelo cuidado, pode transformar as ações mais técnicas desenvolvidas em ambientes mais tradicionais, como o hospital, em ações mais humanizadas, onde o vínculo e o respeito pelo saber do outro se realizam de forma cíclica e horizontalizada. Nesse sentido, este trabalho tem como objetivo divulgar as ações de um projeto de extensão desenvolvido junto aos recém-nascidos internados em uma unidade hospitalar de um hospital de médio porte da região norte do Rio Grande do Sul/Brasil. Foram realizados encontros e diálogos informais com pais e familiares de recém-nascidos internados para tratamento em fototerapia, e tiveram como objetivo amenizar o desgaste físico e emocional que esse momento traumático pudesse trazer aos neonatos e aos pais/familiares.-EDUCATIONAL ACTIVITIES OF NURSING ASSISTANCE IN HOSPITAL ENVIRONMENT: ATTENTION TO PARENTS AND FAMILIES OF NEWBORNS IN PHOTOTHERAPY ABSTRACT: Health education is understood today as an important tool for the making transformation of professionals from this area, as well as for the transformation of the experienced realities. It, when worked in such a way to share the responsibility for caring, can transform the most techniques developed in more traditional environments such as hospital, in more humanized actions, where the bond and the respect for the knowledge of another one are performed by horizontalized and cyclic form. Accordingly, this paper aims to publicize the actions of an extension project developed together with newborns admitted in a hospital unit of a mid-size hospital in the northern region of Rio Grande do Sul, Brazil. Meetings and informal dialogues with parents and families of newborns admitted to treatment in phototherapy were held, and had intended to alleviate the emotional and physical waste that this traumatic moment could bring to newborns and their parents/family. Keywords: Nursing. Health education. Hospital. Phototherapy

Nuclear medicine procedures and the evaluation of male sexual organs: a short review

Sexuality consists of three aspects that are interrelated and inseparable, biological, physiological and social. The biological aspect considers the individual's capability to give and to receive pleasure. In consequence, it covers the functionality of the sexual organs and the physiology of human sexual response cycle. Diagnostic imaging modalities, such as single photon emission computed tomography (SPECT) and positron emission tomography (PET) have been used to evaluate clinical disorders of the male reproductive system. PET and SPECT procedures basically involve the administration of a radiopharmaceutical that has a higher uptake in a specific tumor or tissue. The aim of this brief review is to present some radiopharmaceuticals that have been used in the clinical evaluation of the male sexual organs (testes, prostate, seminal vesicles, penis) related with male sexuality. This information could be useful in better understanding the male sexual response cycle, as well as the sexual disorders, when considering the male sexual organs and the pelvic floor. Moreover, the findings obtained with PET and SPECT imaging could help to evaluate the efficacy of clinical results of therapeutic procedures. In conclusion, the knowledge from these images could aid in better understanding the physiology of the different organs related with sexuality. Furthermore, they could be important tools to evaluate the physiological integrity of the involved organs, to improve clinical strategies and to accompany the patients under treatment