bluuebunny/crossref_metadata_2025 huggingface dataset:
Estudo da influência dos padrões de emissão das espécies do plasma de carbonitretação nas propriedades superficiais de TiCN
Authors: Nunes Filho Antonio , Braz Danilo Cavalcanti , Hinrichs Ruth , Vasconcellos Marcos A. Z. , Rocha Ricardo C. S. , Alves Jr. Clodomiro
Published: April 2015

As intensidades de emissão das espécies N2+, H, C, NH, N2, Ar e CN do plasma de carbonitretação (usando os gases Ar+N2+CH4) foram medidas por espectroscopia de emissão óptica (OES) em pressão e temperatura constantes (2mbar e 500 °C) variando o fluxo de CH4. Em seguida, amostras de Ti comercialmente puro (Ti CP) foram carbonitretadas em plasma nas mesmas condições do estudo por OES. O objetivo desse trabalho é avaliar a influência das espécies presentes no plasma, detectadas por seus padrões de emissão, na composição de fases superficiais, nas características topográficas e no perfil de microdureza do revestimento de TiCN. Foi observado que o aumento da concentração de CH4 no plasma gerou as espécies H (dissociado do CH4) N2+, C, NH e CN. A evolução contínua de CN e uma queda progressiva na espécie N2+ influenciaram a composição da superfície e as propriedades aqui avaliadas. A análise de difração de raios X em ângulo rasante revelou a presença de nitreto e carbonitreto de titânio na superfície com composição química correlacionada com as alterações das intensidades de emissão das espécies CN e N2+. As topografias das amostras, avaliadas por microscopia de força atômica, apresentaram aumento nos parâmetros de rugosidade comparados com a amostra padrão. A rugosidade Ra aumentou com o aumento da intensidade de emissão óptica de CN e redução de N2+. Com auxílio da espectroscopia micro-Raman foi encontrado carbono não reagido com o titânio na forma de um filme que se desenvolveu com o aumento da intensidade da linha de emissão do CN. Este filme pode, hipoteticamente, ter sido o responsável pela queda progressiva da dureza superficial do revestimento.
Adsorção de nitrogênio amoniacal de efluentes industriais pela zeólita Na-P1 sintetizada a partir da cinza pesada de carvão mineral
Authors: Wasem Alexandre , Bôer Sabrine Cássia , Sabedot Sydney , Cunha Ana Cristina Borba da
Published: April 2015

A legislação ambiental em vigor impõe padrões de emissões cada vez mais restritivos às indústrias geradoras de efluentes. Considerando essas exigências, as empresas precisam se adequar a essas políticas, tornando seus processos produtivos mais eficazes e menos poluentes. A combustão de carvão mineral em usinas termoelétricas gera cinzas pesadas que retornam aos produtores do insumo mineral e constituem um passivo ambiental. Neste estudo, as cinzas pesadas foram utilizadas para testes na síntese hidrotérmica (Hidrogel), em meio alcalino, visando à formação de zeólita Na-P1. Para comprovar a sua efetiva formação, foram realizadas análises por difração de raios X, fluorescência de raios X e capacidade de troca catiônica com solução padrão de cloreto de amônio, cujo valor em termos de equivalentes foi de 23,7 mg g-1. Os resultados comprovaram a formação da zeólita Na-P1. Foram avaliados três efluentes industriais de três empresas distintas. A concentração final de nitrogênio amoniacal encontrada para os três efluentes após testes de adsorção de amônio em reator de leito fluidizado apresentaram uma redução de 49% ± 2 e os valores obtidos em termos de equivalentes foram de 21,8 mg g-1, 22,9 mg g-1 e 22,7 mg g-1. As Resoluções CONAMA 357/2005 430/2011 determinam padrões de qualidade de águas para diversas substâncias; no caso da amônia é de 20 mg L-1 de N/NH3. Considerando a grande dificuldade para reduzir os teores de nitrogênio amoniacal em determinados efluentes industriais, novas tecnologias vêm sendo implantadas, como a síntese de zeólitas a partir das cinzas pesadas de carvão. Esse estudo comprovou que a zeólita Na-P1 tem um grande potencial de adsorção para a redução de nitrogênio amoniacal de efluentes industriais.
Estudo das propriedades mecânicas do concreto com adição de cinza de casca de arroz
Authors: Pereira Adriana Maria , Silva Carlos Adriano Rufino da , Queiroz Daniela Cintra de Araújo , Moraes Maria Júlia Bassan de , Melges José Luiz Pinheiro , Tashima Mauro Mitsuuchi , Akasaki Jorge Luís
Published: April 2015

A cura térmica é um processo utilizado para acelerar as reações de hidratação do cimento Portland, em argamassas e em concretos, com objetivo de se obter ganhos de resistência mecânica nas primeiras idades, uma vez que a velocidade das reações químicas de hidratação aumenta com o aumento da temperatura. Nesse sentido, é importante estudar o comportamento de concretos que possuem adições minerais em sua composição. Dentre as adições mais estudadas na composição do concreto encontra-se a Cinza de Casca de Arroz (CCA). Além de ser uma forma de destinar adequadamente este resíduo, e, consequentemente, reduzir os impactos ambientais, tem como principal vantagem os ganhos de resistência, mesmo quando se diminui a quantidade de cimento na mistura. Este trabalho apresenta resultados experimentais de resistência à compressão axial, de resistência à tração por compressão diametral e do módulo de elasticidade para concretos elaborados com CCA, incorporada à mistura em dosagens de 5% e 10% (em massa), em substituição ao cimento. A CCA foi produzida por meio da queima não controlada da casca do arroz. Os traços de concreto foram definidos a partir de uma avaliação das propriedades mecânicas de corpos de prova de argamassa com e sem adição de CCA, tendo sido adotados os que apresentaram as maiores resistências. O processo de cura térmica a vapor dos concretos foi desenvolvido em ciclos de 6 horas, a uma temperatura constante de 80°C. Os resultados mostram um ganho de resistência das amostras com a adição de CCA.
Tradução cultural em educação: experiências da diferença em escritas de surdos
Authors: Müller Janete Inês , Karnopp Lodenir Becker
Published: April 2015

Este artigo apresenta uma investigação sobre narrativas de autoria surda destinadas ao público juvenil e adulto, as quais circulam no Brasil através de livros escritos em português. Considerando a pesquisa em dez livros (MÜLLER, 2012), de diferentes gêneros textuais, que se aproximam pela constituição do espaço biográfico, objetiva-se desenvolver uma análise discursiva e documental, buscando responder como e que marcas culturais surdas são produzidas pelos autores em suas narrativas. A investigação do material empírico, que tematiza as dificuldades vivenciadas, também expressas através da escrita, possibilita evidenciar as principais marcas culturais surdas: a narrativa da experiência de si e a identidade surda como uma diferença. Cabe salientar que narrar-se em uma segunda língua, neste caso, em português, por surdos usuários de Língua Brasileira de Sinais (Libras), possibilita traduzir-se em outras culturas, legitimando o discurso surdo e potencializando a sua cultura através da visibilidade e da difusão cultural possibilitada por essas obras. Os livros, aqui também entendidos como artefatos culturais, constituem-se recurso em um território de reivindicações e de negociações político-pedagógicas. Vinculado aos Estudos Culturais em Educação e aos Estudos Surdos, este trabalho dá continuidade a e consolida pesquisas sobre cultura surda e educação; também problematiza relações de poder envolvidas na construção de significados, sobretudo no campo da educação, aqui entendida como um processo de condução da vida social e individual dos sujeitos. Esta investigação integra as pesquisas desenvolvidas no projeto Produção, Circulação e Consumo da Cultura Surda Brasileira.
Formadores de adultos: dilemas e práticas profissionais na área de matemática
Authors: Fantinato Maria Cecilia , Moreira Darlinda
Published: April 2015

Este artigo tem por objetivo problematizar os desafios colocados aos formadores da área Matemática para a Vida (MV), bem como analisar a adaptação e criação de práticas profissionais que emergem da concretização do processo de Reconhecimento, Validação e Certificação de Competências (RVCC) existente na educação de adultos, em Portugal. Metodologicamente, o estudo desenvolveu-se por meio de uma abordagem qualitativa e multissituada, acompanhando a dinâmica dos Centros Novas Oportunidades e, particularmente, os formadores da área MV, os quais na sua maioria já tinham sido ou eram professores de matemática no ensino regular. Tendo por enquadramento os documentos oficiais de referência, emergiram, dos resultados da análise de conteúdo das entrevistas realizadas com os formadores, dilemas e desafios que são analisados face: às novas práticas pedagógicas que os formadores têm de desenvolver e implementar para atuar nesse modelo específico da educação de adultos; à diversidade existente entre os adultos que recorrem ao processo RVCC; à necessidade de descodificar e adaptar os documentos oficiais na área da MV. A pesquisa desenvolvida permitiu constatar que a metodologia do processo RVCC parece estimular nos formadores de MV uma postura dialógica e de legitimação de saberes matemáticos do cotidiano, que muito se aproxima de uma perspetiva etnomatemática. Os resultados apontam para novas posturas e práticas profissionais relacionadas com a procura de novas metodologias de ensino e de validação de aprendizagens, alargando anteriores perspectivas e desenvolvendo a identidade e a compreensão do significado de ser professor/formador de uma forma mais holística e enquadrada na realidade educativa da formação de adultos.
Comparison of Glufosinate-Based Herbicide Programs for Broad-Spectrum Weed Control in Glufosinate-Resistant Soybean
Authors: Aulakh Jatinder S. , Jhala Amit J.
Published: April 2015

Because of the increasing number of glyphosate-resistant weeds, alternate herbicide-resistant crops and herbicides with different modes of action are required to protect crop yield. Glufosinate is a broad-spectrum POST herbicide for weed control in glufosinate-resistant crops, including soybean. The objective of this study was to compare herbicide programs with glufosinate applied singly at late-POST (LPOST) or sequentially at early POST (EPOST) followed by (fb) LPOST applications and PRE herbicides fb EPOST/LPOST glufosinate alone or tank-mixed with acetochlor, pyroxasulfone, orS-metolachlor in glufosinate-resistant soybean. A field experiment was conducted at the South Central Agriculture Laboratory in Clay Center, NE, in 2012 and 2013. Glufosinate applied in a single LPOST or sequential EPOST fb LPOST application controlled common lambsquarters, common waterhemp, eastern black nightshade, green foxtail, large crabgrass, and velvetleaf ≤ 82% and resulted in a weed density of 6 to 10 plants m−2by the end of the season. Flumioxazin-, saflufenacil-, or sulfentrazone-based premixes provided 84 to 99% control of broadleaf and grass weeds tested in this study at 15 d after PRE application and a subsequent LPOST application of glufosinate alone controlled broadleaf and grass weeds 69 to 93% at harvest, depending on the herbicide program and weed species being investigated. The PRE application of sulfentrazone plus metribuzin fb EPOST glufosinate tank-mixed with acetochlor, pyroxasulfone, orS-metolachlor controlled the tested broadleaf and grass weeds ≥ 90%, reduced density to ≤ 2 plants m−2, and reduced weed biomass to ≤ 10 g m−2and produced soybean yields of ≥ 4,450 and 3,040 kg ha−1in 2012 and 2013, respectively. Soybean injury was 0 to 20% from PRE or POST herbicides, or both and was inconsistent, but transient, during the 2-yr study, and it did not affect soybean yield. Sulfentrazone plus metribuzin applied PRE fb glufosinate EPOST tank-mixed with acetochlor, pyroxasulfone, orS-metolachlor provided the highest level of weed control throughout the growing season and increased soybean yield compared with a single LPOST or a sequential EPOST fb LPOST glufosinate application. Additionally, these herbicide programs provide four distinct mechanisms of action that constitute an effective weed-resistance management strategy in glufosinate-resistant soybean.
Mixing and compaction of fibre- and lime-modified cohesive soil
Authors: Gelder Craig , Fowmes Gary J
Published: April 2015

Fibre reinforcement is a versatile method of increasing the shear strength of soils for earthwork applications. However, research to date has encountered a number of problems when utilising cohesive host soils. The aim of this study was to develop a suitable site-applicable method of mixing fibre into cohesive host soils. Intermediate plasticity clay reinforced with monofilament polypropylene fibres was used in the laboratory investigations. In order to mix the fibres successfully, the initial moisture content of the host soil was increased prior to the introduction of fibres. By introducing quicklime, excess moisture was removed through the hydration process, and a portion of free water was effectively held within aggregations of flocculated clay particles, thereby having little influence on the dynamic boundaries. Fibrous inclusions within the clay clods resisted compactive effort, forming an interlocked structure. As a result, the optimum moisture content increased and the maximum dry density decreased. This trend was heavily dependent on the interfacial shear resistance along the fibre boundary, which consequently decreased as the water content increased or the compactive effort was increased. Results from strength tests confirmed that both peak and post-peak shear strength increased, creating a more ductile material capable of maintaining shear strength at high levels of strain.
Using Pulsed Neutron Decay-Spectrum Data and Multi-inflatable Packer Plugdown Assemblies Improve Oil Production Rates in a Mature CO2 Flood
Authors: Schneider B. D. , Hogan G. P. , Holt W. N.
Published: April 2015

A gravity-stable, vertical C02 miscible injection flood was implemented in the 824 feet thick Wellman Unit Wolfcamp reef reservoir in July 1983. C02 is being injected in the crest of the reservoir to displace the oil vertically downward. The producing wells areconstantly being plugged down out of the "gassed out" interval into the oil bank.

The purpose of this paper is to present the results of the PND®-S through tubing logging tool as a method to determine the C02/oil/water contacts and the use of multiple inflatable packers/sliding sleeve plugdown assemblies to achieve zonal isolation between "gassed out" intervals and producing intervals.
Visualization of Flow Pathways in Degraded Peat Soils Using Titanium Dioxide
Authors: Liu Haojie , Lennartz Bernd
Published: April 2015

Dye tracing is a valuable method for studying the flow patterns in soils. However, limited information is available on water flow and solute transport pathways in dark‐colored peat soils because the frequently used Brilliant Blue FCF dye does not visibly stain the soil. In this study, we were aiming at testing the suitability of TiO2as a dye tracer for dark peat soils. The dye tracer experiments were conducted in differently degraded peat soils by applying a TiO2suspension (average particle size 0.3 μm; 10 g L−1) in a pulse of 40 mm. A Br solution was additionally applied as a comparison to evaluate the suitability of TiO2. The TiO2suspension clearly marked the flow and transport pathways. The distribution of TiO2in the soil profile, as analyzed from 5‐ by 5‐cm grid cells, compared with the Br patterns. It was found that both tracers took the same preferential flow pathways, but the lateral spreading of Br was more pronounced, which was attributed to the limited access of TiO2particles to the fine pore system. Both tracers showed a strong spatial correlation according to the cross‐semivariance analysis, confirming the suitability of TiO2as a dye tracer in peat soils.
Individuals Poststroke Do Not Perceive Their Spatiotemporal Gait Asymmetries as Abnormal
Authors: Wutzke Clinton J. , Faldowski Richard A. , Lewek Michael D.
Published: April 2015

Background

Following stroke, spatiotemporal gait asymmetries persist into the chronic phases, despite the neuromuscular capacity to produce symmetric walking patterns. This persistence of gait asymmetry may be due to deficits in perception, as the newly established asymmetric gait pattern is perceived as normal.

Objective

The purpose of this study was to determine the effect of usual overground gait asymmetry on the ability to consciously and unconsciously perceive the presence of gait asymmetry in people poststroke.

Design

An observational study was conducted.

Methods

Thirty people poststroke walked overground and on a split-belt treadmill with the belts moving at different speeds (0%–70% difference) to impose varied step length and stance time asymmetries. Conscious awareness and subconscious detection of imposed gait patterns were determined for each participant, and the asymmetry magnitudes at those points were compared with overground gait.

Results

For both spatial and temporal asymmetry variables, the asymmetry magnitude at the threshold of awareness was significantly greater than the asymmetry present at the threshold of detection or during overground gait. Participants appeared to identify belt speed differences using the type of gait asymmetry they typically exhibited (ie, step length or stance time asymmetries during overground gait).

Limitations

Very few individuals with severe spatiotemporal asymmetry were tested, and participants were instructed to identify asymmetric belt speeds rather than interlimb movements.

Conclusions

The data suggest that asymmetry magnitudes need to exceed usual overground levels to reach conscious awareness. Therefore, it is proposed that the spatiotemporal asymmetry that is specific to each participant may need to be augmented beyond what he or she usually has during walking in order to promote awareness of asymmetric gait patterns for long-term correction and learning.
Open-Access Monograph Publishing and the Origins of the Office of Digital Scholarly Publishing at Penn State University
Authors: Thatcher Sanford G.
Published: April 2015

This essay explains the background of open-access monograph publishing as developed principally by university presses, often in association with libraries. It begins with discussions at Princeton University Press in the early 1970s about how to deal with the crisis of scholarly monograph publishing and moves on to describe a joint library/press project in the Committee on Institutional Cooperation (CIC) in the early 1990s. The failure of that project to be funded led the library and press at Penn State to launch a jointly operated Office of Digital Scholarly Publishing in 2005, which supported one of the pioneering programs in open-access monograph publishing. The CIC project, in particular, anticipated the proposal by the Association of American Universities / Association of Research Libraries, announced in June 2014, to subvent the publication of first monographs using an open-access model.
A Voice of One, a Society of One: Community Sustainability in the New Media Age of Individualism
Authors: Gould Thomas H.P.
Published: April 2015

As we shift away from traditional information exchange pathways, we enter avenues that are anything but predictable. These ‘channels’ do not provide the economic, cultural, or traditional reliability that we have come to expect, nor the certainty that what we are reading or viewing is trustworthy. We are willing to make this hell-bound exchange of trust for innovation because we value ourselves more than the information, perhaps to a greater extent than ever before. What we are neglecting are the communities that have until now made possible what we may see as quaint and largely useless. As national borders disappear, cultural barriers also more slowly dissolve, and everywhere becomes more and more like here. We seek ways to express and reserve our individuality. We are, after all, us, not them.
Edmund Husserl's Reception in Marvin Farber's Philosophy and Phenomenological Research
Authors: Ricci Gabriel R.
Published: April 2015

This article provides insight into the early history of the journal Philosophy and Phenomenological Research (PPR), which was founded by Marvin Farber in conjunction with the International Society of Phenomenology, particularly as it concerns the editorial struggles to remain faithful to the work of Edmund Husserl. The PPR was intended as a continuation of the Jahrbuch für Philosophie und phänomenologische Forschung, which was the first philosophical platform for phenomenology. Many of Husserl's students who first published in the Jahrbuch formed the original editorial staff of Farber's journal and were dedicated to maintaining the spirit of phenomenology's founder in the journal. This commitment would be mitigated by the pragmatic temperament of American philosophy that Marvin Farber found in William James.
A Simple System for Constructing an End-of-Book Index
Authors: Francis Ronald D. , Greenway Murray
Published: April 2015

End-of-book indexes are usually constructed either by professional indexers or by authors. This article proposes a relatively simple system that may be used by either. It is possible to construct an index electronically by marking the relevant entries. Those writers who use Microsoft Word will find the use of the system explained on the Help menu. Such electronic systems may appeal to the electronically minded. This article addresses those who prefer a more hands-on system in which they feel a better sense of involvement and control. Further, it gives the author more discretion about including a term, cross-referencing a term, and making sub-categories in the end-of-book index. This article has the major aim of outlining an economical method that involves computer use but does not employ the automatic indexing system.
Optical sectioning and 3D reconstructions as an alternative to scanning electron microscopy for analysis of cell shape
Authors: Landis Jacob B. , Ventura Kayla L. , Soltis Douglas E. , Soltis Pamela S. , Oppenheimer David G.
Published: April 2015

Premise of the study:

Visualizing flower epidermal cells is often desirable for investigating the interaction between flowers and their pollinators, in addition to the broader range of ecological interactions in which flowers are involved. We developed a protocol for visualizing petal epidermal cells without the limitations of the commonly used method of scanning electron microscopy (SEM).

Methods:

Flower material was collected and fixed in glutaraldehyde, followed by dehydration in an ethanol series. Flowers were dissected to collect petals, and subjected to a Histo‐Clear series to remove the cuticle. Material was then stained with aniline blue, mounted on microscope slides, and imaged using a compound fluorescence microscope to obtain optical sections that were reconstructed into a 3D image.

Results:

This optical sectioning method yielded high‐quality images of the petal epidermal cells with virtually no damage to cells. Flowers were processed in larger batches than are possible using common SEM methods. Also, flower size was not a limiting factor as often observed in SEM studies. Flowers up to 5 cm in length were processed and mounted for visualization.

Conclusions:

This method requires no special equipment for sample preparation prior to imaging and should be seen as an alternative method to SEM.
Quelques considérations sur l’authorship
Authors: Monhonval Pauline , Lotstra Françoise
Published: April 2015

Cet article a pour but d’informer le lecteur sur différents aspects de l’authorship, c’est-à-dire le fait d’être reconnu auteur d’un écrit. Il reprend notamment les définitions et recommandations proposées à ce jour, les chiffres reportés dernièrement dans la littérature concernant la fraude et le cadre législatif actuel. La problématique de la fraude est abordée sous différents aspects, ce qui souligne la complexité d’un sujet qui mériterait d’être étudié d’avantage.
L’éthique du cas : est-il possible de se régler sur l’éthique de la psychanalyse ?
Authors: Sauret Marie-Jean , Zapata-Reinert Luz
Published: April 2015

Cet article vise à montrer en quoi opter pour une clinique orientée par la psychanalyse ne va pas sans un choix éthique. L’éthique venant là où aucun Autre ne répond, le désir de l’analyste se place ici comme opérateur d’une clinique où le savoir et l’acte sont sans cesse interrogés dans une démarche d’accueil de l’indécidable. Le paradigme de la singularité et la construction psychanalytique du cas sont développées afin de montrer que « faire cas » de la rencontre clinique consiste à s’intéresser aux effets de son intervention, à permettre au sujet de tirer les conséquences de ce qu’il y rencontre comme réel, à se faire passeur de ce que l’on y apprend. Le cas est ainsi replacé dans sa fonction de transmission.
Entre non-dits et « ça-voir », l’enfant, sujet de l’inconscient : un parti-pris éthique
Authors: Taverna Isabelle
Published: April 2015

L’inconscient, le sujet du désir et le fantasme : voilà quelques jalons qui peuvent faire repères quant à notre éthique de travail. Cependant, quand nous travaillons avec un enfant, comment conjuguer ces repères avec les spécificités que nous imposent l’état d’enfance ? En effet, si les parents sont des acteurs avec qui le psychanalyste aura à composer, il considérera néanmoins l’enfant comme un Sujet à part entière et c’est du Sujet du désir et de l’inconscient dont il fera l’hypothèse. C’est cette éthique qui soutiendra son travail avec l’enfant. Tenant compte de ces différents paramètres, c’est une question plus spécifique que je souhaiterais déployer : Comment travailler lorsque nous sommes dépositaire d’un savoir sur son histoire, à l’insu de l’enfant ?
Le « désir du psychanalyste » et ses passages à l’acte
Authors: De Neuter Patrick
Published: April 2015

Tout psychologue clinicien, a fortiori tout psychanalyste, peut se trouver un jour ou l’autre confronté au surgissement de l’amour ou du désir - ou les deux ensemble - dans la relation avec la personne qui le consulte. Les passages à l’acte sexuels font partie des risques de ces métiers, quelle que soit leur orientation théorique. Les conséquences sont la plupart du temps nocives ; mais il est difficile de s’en faire une idée car faire l’amour avec son soignant est un sujet qui fait encore l’objet d’un certain tabou. L’auteur aborde ce sujet à partir de témoignages recueillis auprès d’analysantes dans une optique particulière : l’éthique de la psychanalyse développée par Jacques Lacan.
Penser l’Église comme projet ? Une réflexion méthodologique en théologie pratique
Authors: Halter Didier
Published: April 2015

Le concept de projet constitue le point commun, avoué ou caché, de nombreuses réflexions ecclésiologiques protestantes récentes. Didier Halter * souligne que celles engagées dans le domaine de l’anthropologie sociale et des sciences de l’éducation autour de ce concept permettent de préciser en quoi ce dernier est également théologiquement pertinent. Sa lecture théologique fait émerger différents critères méthodologiques d’évaluation des réflexions ecclésiologiques actuelles.
Rupture du contrat psychologique et risques psycho-sociaux : une recherche intervention dans le cadre de la théorie de la conservation des ressources
Authors: Rossano Maryline , Abord de Chatillon Emmanuel , Desmarais Céline
Published: April 2015

Les organisations publiques contemporaines subissent aujourd’hui de nombreuses transformations, parfois lourdes de conséquences pour les agents publics. Le contrat psychologique (modélisation de la relation d’emploi) qui lie l’agent à son organisation en est bousculé. Cet article se propose d’examiner les processus en jeu afin de comprendre ces changements tout en préservant la santé des agents. Il ambitionne d’apporter des éléments de compréhension du lien existant entre rupture, violation du contrat psychologique et mal-être au travail dans le contexte des organisations publiques. Cette recherche-intervention examine ainsi les processus par lesquels la rupture du contrat psychologique débouche sur du mal-être, en lien avec des atteintes aux ressources. Cette analyse est réalisée dans le contexte d’un service public en direction des personnes âgées et des personnes handicapées ayant fait l’objet d’une recherche-intervention d’une durée d’une année complète. Ce contexte (les métiers du social) nous permet d’interroger à la fois un contrat psychologique tourné vers le service au public et des contraintes classiques comme l’augmentation de la charge de travail ou la raréfaction des moyens. Nos résultats montrent l’importance du collectif dans le processus de reconstruction des ressources mais également que la violation du contrat psychologique correspond à une atteinte à des ressources fondamentales qui constituent le cœur de ce contrat. La démarche de cette recherche révèle la pertinence de la méthodologie de recherche-intervention dans le développement de connaissances dans le domaine de la santé au travail.
L’ambivalence selon Bleuler : les nouvelles trajectoires d’un symptôme oublié
Authors: Beretta Véronique , Alameda Luis , Abrahamyan Empson Lilith , Tozzi Alessandra Solida
Published: April 2015

Individualisée en 1910 par Eugen Bleuler comme symptôme fondamental des troubles du spectre de la schizophrénie, l’ambivalence désigne la tendance de l’esprit schizophrénique à faire coexister, de manière non dialectique et indépassable pour le sujet, deux attitudes affectives ou deux idées opposées en même temps et avec la même puissance. L’originalité de Bleuler est d’avoir pensé l’ambivalence comme étant le résultat d’un relâchement associatif produit par une scission («  Spaltung  »), voire une disparition («  Zerspaltung  ») nette et radicale des associations fortes issues de la pensée empirique. Ce symptôme, qui est toujours présent même dans les cas les plus légers, peut se manifester sous une forme affective («  affective Ambivalenz  »), volitive («  Ambitendez  ») ou intellectuelle («  intellektuelle Ambivalenz  »). Désormais, les critères actuels permettant de poser un diagnostic de schizophrénie ne font plus aucunement mention de l’ancienne ambivalence bleulérienne, le reproche principal étant celui d’être un symptôme trop rare, trop vague et trop psychanalytique. C’est probablement ce dernier point qui est le plus fondé. L’ambivalence affective, placée au centre de la théorie des pulsions, se décline selon la structure de personnalité du sujet : elle est intégrée chez le patient névrotique (Freud, 1938), clivée chez le patient limite (Kernberg, 2004) et paradoxale chez le patient schizophrène (Racamier, 1990). Sous la loupe de la psychopathologie, nous allons décrire ces différentes formes d’ambivalence et expliquer en quoi elles se différencient, pour montrer que l’ambivalence bleulérienne reste un trouble de base tout à fait intéressant à diagnostiquer, avant de présenter les équivalents que nous avons su trouver du côté de la phénoménologie psychiatrique et de compléter notre exposé par les apports de la psychologie expérimentale et des neurosciences psychiatriques.
Comment évoquer l’irreprésentable
Authors: Skrivan Valérie
Published: April 2015

L’article décrit un suivi psychologique effectué en plusieurs temps. La première rencontre avec le patient, policier de profession, a permis un soutien qualifié de post-immédiat (débriefing émotionnel). Quelques mois après cette intervention, un certain nombre de séances ont eu pour but de contenir une crise sous-tendue par des éléments identitaires et transférentiels. Finalement, une troisième prise en charge a été nécessaire suite à une situation dramatique au cours de laquelle le patient a échappé de peu à la mort dans l’exercice de ses fonctions. Ces trois moments, bien distincts dans leurs demandes mais dont la trame commune est la quête de sens, permettent d’interroger le rôle du psychologue d’urgence, dont la mission est d’intervenir suite à des événements potentiellement traumatiques. Du type d’aide, des limites, des enjeux, il est sans doute aussi ici question de la posture que doit ou peut prendre le psychologue spécialisé dans la prise en charge de victimes ayant vécu l’innommable. De ce fait, comment dès lors accompagner lorsqu’il manque le verbe, voire la représentation de « la chose vécue » ?
Formes du transfert dans la psychose : une maison à plusieurs étages
Authors: Söderström Dag
Published: April 2015

L’auteur cherche à rendre compte de différentes formes que prend le transfert dans la relation avec la partie psychotique de la personne. En effet, une partie du transfert se déroule sur un mode particulier, intense et symbiotique et cette rencontre transférentielle possède une dimension traumatique à laquelle répond un transfert sur le cadre. Ce dernier est particulièrement mis en lumière lorsqu’on envisage le travail de séparation-terminaison. Ce transfert massif sur le cadre provient de la tentative de contrôler les angoisses d’anéantissement du moi. Quelques dessins 3 provenant d’une thérapie en cours viendront illustrer les stades du transfert et une progressive intégration du self. Mais cette forme du transfert n’est pas la seule et l’appareil psychique de l’analyste fait aussi l’objet d’un investissement. En fait, il existe un transfert de « l’explorateur » démontrant le profond intérêt commun entre l’analyste et le patient pour la recherche et la compréhension du fonctionnement psychique. Le patient psychotique en a un besoin vital pour constituer un récit intérieur de lui-même garant de la continuité du sentiment d’identité et permettant alors de supporter les séparations.
A propos du rêve inrêvable : « L’introjection de la fonction rêvante de l’analyse »
Authors: Chauvin Jean-Marc
Published: April 2015

L’auteur s’interroge sur la survenue nouvelle de rêves en cours de cure. Des rêves jusqu’alors inrêvés ou inrêvables, faute des moyens psychiques disponibles pour y parvenir. Quels sont les chemins développés par la « paire freudienne » pour que ce rêve inrêvable advienne ? La rêverie maternelle, les associations et rêveries de l’analysant sont les attracteurs-élaborateurs transitionnels communs essentiels de ce rêve inrêvable. L’introjection de la fonction rêvante de l’analyse complémente la théorie sur la transitionnalité en se fondant sur cette aire intersubjective, tierce, créée en séance par les deux protagonistes. Elle est le préalable au déploiement d’un rêve inrêvé où le non-psychisé du traumatique advient au représentable.
Spectral-Domain Optical Coherence Tomography of the Macula in Preterm Infants Treated With Bevacizumab for Retinopathy of Prematurity
Authors: Dorta Paola , Kychenthal Andres
Published: April 2015

BACKGROUND AND OBJECTIVE:

To examine the macula in preterm infants treated with bevacizumab (Avastin; Genentech, South San Francisco, CA) for retinopathy of prematurity (ROP) using spectral domain optical coherence tomography (SD-OCT).

PATIENTS AND METHODS:

Twenty eyes (of 11 patients) treated with Avastin only or in addition to photocoagulation and vitreous surgery were included. Imaging was performed with a portable spectral-domain optical coherence tomography (OCT) device. Macular measurements, including the foveal and parafoveal index were calculated. RetCam (Clarity Medical Systems, Pleasanton, CA) photographs were obtained for all patients.

RESULTS:

Mean age of patients at OCT examination was 28.9 months (range: 4 to 50 months). Thirteen eyes (65%) developed foveal contour (FC), and seven eyes (35%) did not. Earlier gestational age and zone I disease were associated with absence of FC development. In patients without FC, two of the five eyes had vision better than 20/400, compared with 10 of 11 eyes with FC.

CONCLUSION:

Vision tends to be better in Avastin-treated eyes when an FC is present. Morphological characteristics of retinal anatomy may predict visual function.

[
Ophthalmic Surg Lasers Imaging Retina
. 2015;46:321–326.]
Paraneoplastic Retinopathy Associated With Systemic Follicular Cell Lymphoma
Authors: Bhavsar Kavita V. , Hedges Thomas , Thirkill Charles E. , Reichel Elias
Published: April 2015

The authors describe two rare cases of autoimmune retinopathy associated with follicular cell lymphoma, including a 54-year-old man who experienced nyctalopia for 1 year (patient 1) and a 59-year-old man who had bilateral loss of central vision for 6 months (patient 2). Visual field testing of patient 1 revealed nonspecific defects, and multifocal electroretinogram (ERG) testing showed mildly subnormal amplitudes more pronounced in the left than the right eye. Serologic testing detected antibodies against a 47-kD protein, presumed to be alpha-enolase. Goldmann perimetry of patient 2 showed dense central scotomas, and a full-field ERG revealed reduced amplitudes of bright scotopic responses. Serological testing yielded anti-bipolar cell antibodies. A variable presentation of autoimmune retinopathy can occur in the setting of follicular cell lymphoma. Disparate serum autoantibodies may have mediated the pathogenesis of retinal degeneration in these two patients and could explain the difference in course and severity of retinopathy.

[
Ophthalmic Surg Lasers Imaging Retina
. 2015;46:373–376.]
Toward Efficient Segmentation of Brain Tumors Based on Support Vector Machine Classifier Through Optimized RBF Kernel Parameters and Optimal Texture Features
Authors: Kharrat Ahmed , Abid Mohamed
Published: April 2015

This paper presents a brain tumor automatic segmentation approach applied to magnetic resonance (MR) images. The authors' approach addresses all types of brain tumors. The proposed method involves therefore: image pre-processing, feature extraction via wavelet transform-spatial gray level dependence matrix (WT-SGLDM), dimensionality reduction using genetic algorithm (GA), parameters optimization by GA-SVM model and classification of the reduced features using support vector machine (SVM). These optimal features and optimized parameters are employed for the segmentation of brain tumor. The resulting method is aimed at early tumor diagnostics support by distinguishing between the brain tissue, benign tumor and malignant tumor tissue. The authors' contribution consists in involving the parameters optimization phase to improve the classification and segmentation results by using GA-SVM model. The segmentation results in different types of brain tissue are evaluated by comparison with the manual segmentation as well as with other existing techniques. The qualitative evaluation shows that their approach outperforms manual segmentation with a Match Percent measure (MP) equal to 97.08% and 98.89% for the malignant and the benign tumors respectively. The quantitative evaluation displays that the authors' attitude overtakes FCM algorithm with an accuracy rate of 99.69% for benign tumor and 99.36% for malignant tumor.
Composite Service Reselection Method in Correlation Context
Authors: Zhang Yuesong , Zhang Bin , Zhang Changsheng
Published: April 2015

Reselection of composite service is one of the core research issues in service computing field. In practical scenarios, because of business relations between service providers or the restrictions of service physical deployment environment, there may be correlation among services. Its existence affects the quality of services used together, makes corresponding abstract services potentially correlating with each other. This leads the QoS used to determine the bindings between abstract and concrete services to be inaccurate, and the selected services would not be the optimal one in actual execution environment. In this paper, the QoS-Correlation services are extracted from the execution log through Apriori data mining method. Then, the authors capture the correlated abstract services to present such correlations in a higher level of abstraction regardless of actual services. In the final, the correlated abstract services will be regarded as a task unit, and the corresponding correlation services of each task unit as its candidate services set. They also propose a correlation-aware service selection method in the paper. The method includes runtime reselection whenever the actual QoS largely deviates from the estimates.
Свободные коммутативные медиальные $n$-арные группоиды
Authors: Davidov Sergey Stepanovich
Published: April 2015

В работе, используя разрешимость эквациональной теории коммутативных медиальных $n$-арных группоидов, описывается строение свободного коммутативного медиального $n$-арного группоида и доказывается, что коммутативный медиальный $n$-арный группоид имеет выпуклое линейное представление.
Предельная теорема для многотипного критического ветвящегося процесса, эволюционирующего в случайной среде
Authors: Dyakonova Elena Evgen'evna
Published: April 2015

Рассматриваются многотипные критические ветвящиеся процессы, эволюционирующие в случайной среде, порожденной последовательностью независимых одинаково распределенных случайных величин. Доказана функциональная предельная теорема о распределении логарифма числа частиц в процессе в моменты времени $nt$, $0\leq t\leq 1$, при условии невырождения процесса к моменту $n\to \infty$.
Работа выполнена при финансовой поддержке программы Президиума РАН "Вероятностные модели в динамике популяций".
О сложности реализации линейных булевых функций в базисе «импликация - отрицание»
Authors: Kombarov Yurii Anatol'evich
Published: April 2015

Работа посвящена исследованию схем из функциональных элементов в базисе $\{x \to y, \overline{x}\}$. Найдено точное значение сложности реализации неоднородной линейной функции, а также получено описание минимальных схем, реализующих однородную линейную функцию.
Работа выполнена при поддержке Российского фонда фундаментальных исследований (проект 14-01-00598 [1]).
Обобщение теоремы Оре о неприводимых многочленах над конечным полем
Authors: Nechaev Aleksandr Aleksandrovich , Popov Vladimir Olegovich
Published: April 2015

Для произвольного примарного числа $q$ приводится критерий неприводимости многочлена вида
$$
F(x) = x^{q^{m}-1}+a_{m-1}x^{q^{m-1}-1}+\ldots+a_1x^{q-1}+a_0, a_0\neq 0,
$$
над полем $K = GF(q^t)$.
О расширении групп преобразований компактных солвмногообразий
Authors: Milovanov Mikhail Vasil'evich
Published: April 2015

Указан метод расширения связных односвязных разрешимых групп Ли, действующих транзитивно и локально эффективно на заданном компактном солвмногообразии. В 1973 г. Л. Ауслендером была поставлена проблема описания всех таких групп. Полученные результаты приводят к выводу, что эта проблема вряд ли может иметь исчерпывающее решение.
Библиография: 10 названий.
Voice Analysis in Individuals with Chronic Obstructive Pulmonary Disease
Authors: Shastry Anuradha , Balasubramanium Radish Kumar , Acharya Preetam R
Published: April 2015

Background

Chronic obstructive pulmonary disease (COPD) is a respiratory condition that can affect voice as respiration is the source for voice production. There are very few studies available on the analysis of voice in individuals with COPD (asthma, chronic bronchitis and emphysema).

Purpose of the study

The aim of this study was to analyze the acoustic and perceptual characteristics of voice in individuals with COPD.

Method

The study followed a comparative cross-sectional study design. Sixty-four participants were considered, and they were divided into two groups (group 1: individuals with COPD, n = 32; group 2: normal individuals, n = 32). Acoustic analysis was performed using CSL software. The perceptual analysis was done using CAPE-V.

Results

The results showed that there was significant difference between the two groups on acoustic measures (lower fundamental frequency, reduced frequency range, increased pitch and amplitude perturbation measures and increased noise measures), and perceptual measures (presence of increased roughness, breathiness, strain).

Conclusion

We can conclude that COPD has an impact on voice measures as assessed through acoustic and perceptual parameters. These voice deviations may be due to COPD itself or due to the effects of the medication.

Clinical implication

The findings of this study provide valuable information regarding voice problems in the individuals with COPD so that an appropriate intervention plan can be designed.

How to cite this article

Shastry A, Balasubramanium RK, Acharya PR. Voice Analysis in Individuals with Chronic Obstructive Pulmonary Disease. Int J Phonosurg Laryngol 2014;4(2):45-49.
Laryngotracheoplasty with T-tube Stenting by Modification of Shiann Yann Lee's Technique
Authors: Kumar Mohan HM , Jayaraju Rijo M
Published: April 2015

Background

Laryngotracheal stenosis is a challenging problem in laryngology which is often misdiagnosed and improperly treated. It is also on the rise due to increase in the number of accidental trauma, prolonged intubations or tracheostomy. Laryngotracheoplasty by Shiann Yann Lee's technique with T-tube stenting is a common accepted surgical procedure these days.

Materials and methods

Ours is a retrospective study of 14 cases of laryngotracheal stenosis over a period of 20 years from 1993 to 2014, who underwent laryngotracheoplasty with T-tube stenting by a modification of Shiann Yann Lee's technique.

Results

In our study of 14 patients, the incidence of laryngotracheal stenosis was found to be maximum in the age group of 21 to 30 years with a male preponderance. The commonest etiological factor was prolonged endotracheal intubation or cuffed tracheostomy. The commonest site of the stenosis in our study was cervical trachea. The average time for removal of T-tube was 18 months. All the 14 patients had an uneventful period between insertion and removal of T-tube without any complications. The success rate of our study was hence 100%.

Conclusion

Laryngotracheoplasty with T-tube stenting by our modification of Shiann Yann Lee's technique is an effective and successful method in the management of laryngotracheal stenosis with a success rate of 100%.

How to cite this article

Kumar MHM, Jayaraju RM. Laryngotracheoplasty with T-tube Stenting by Modification of Shiann Yann Lee's technique. Int J Phonosurg Laryngol 2014;4(2):60-62.
Instantaneous Impedance Monitoring of Aluminum Alloy 7075 Corrosion in Borate Buffer with Admixed Chloride Ions
Authors: Orlikowski Juliusz , Ryl Jacek , Jarzynka Magdalena , Krakowiak Stefan , Darowicki Kazimierz
Published: April 2015

This study presents research capabilities of dynamic electrochemical impedance spectroscopy (DEIS) as a tool used for instantaneous online monitoring of corrosion processes on the example of aluminum alloy 7075. A borate buffer with admixed chloride ions in a quantity ranging from 0.05 mM to 25 mM was used to represent different types of corrosion attack. The surfaces of sample specimens were evaluated before and after the tests by means of scanning electron microscopy. DEIS was assisted in-situ by cyclic polarization and acoustic emission facilitating detection of corrosion attack.
La Ciencia como empresa social: su evaluación desde la bibliometría
Authors: Pérez Reyes Guillermo Andrés , Martínez Rodríguez Ailín
Published: April 2015

El propósito de este artículo es realizar una revisión teórica de la Ciencia enmarcando a la misma como empresa social, asimismo se relaciona la bibliometría como herramienta fundamental para la evaluación de ésta. Este artículo se apoya en una investigación documental. Se concluye que La ciencia como empresa social debe dar respuestas a las necesidades de la sociedad a partir de sus contribuciones y que la misma puede ser medida a partir del uso de indicadores bibliométricos.
A ética no serviço de catalogação: uma revisão bibliográfica
Authors: Moreno Edinei Antonio
Published: April 2015

Objetivo: O estudo analisa a presença da ética no serviço de catalogação realizado pelo bibliotecário. Método: O estudo se utilizou do método de revisão bibliográfica. Resultados: Nos resultados se obteve a conceituação do termo ética; afirmação da importância das tecnologias da informação e comunicação para o serviço de catalogação e os sistemas de recuperação da informação; o papel ético do bibliotecário no serviço de catalogação. Conclusões: O presente estudo de revisão bibliográfica possibilitou apresentar propostas para futuros estudos na área da Biblioteconomia e Ciência da Informação.