453 research outputs found

    Correction to: Northerly wind trends along the Portuguese marine coast since 1950

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    All figure captions are not accurate. Also, there is a repeated error in most figures because the vertical scales incorrectly show Wind Strenght instead of Wind Strength and in Fig. 4 (mid-panel) 2003 instead of 2004.info:eu-repo/semantics/publishedVersio

    A Violência no Local de Trabalho em Instituições de Saúde: Um Estudo Monocêntrico sobre Causas, Consequências e Estratégias de Prevenção

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    Introduction: Workplace violence is one of the main risk factors in the professional world. Healthcare workers are at higher risk when compared to other sectors. Our study aimed to characterize physical and verbal violence in a public hospital and to define occupational health prevention and surveillance strategies. Material and Methods: Single center observational cross-sectional study, carried amongst healthcare workers in a public hospital in Lisbon. A qualitative survey was carried out through six in-depth interviews. A quantitative survey was carried through questionnaires delivered to 32 workers. A significance level of 5% was accepted in the assessment of statistical differences. The Mann-Whitney test and the Fisher’s exact test were used to calculate p values. Results: The main results are: (1) 41 violence incidents were reported in the quantitative phase; (2) 5/21 [23.81%] victims notified the incident to the occupational health department; (3) 18/21 [85.71%] victims reported a permanent state of hypervigilance; (4) 22/28 [78.57%] participants self-reported poor or no familiarity with internal reporting procedures; (5) 24/28 [85.71%] participants believed it is possible to minimize workplace violence. Discussion: Workplace violence is favored by unrestricted access to working areas, absence of security guards and police officers or scarce intervention. The low notification rate contributes to organizational lack of action. The state of hypervigilance reported in our study reflects the negative effects of threatening occupational stressors on mental health. Conclusion: Our results show that workplace violence is a relevant risk factor that significantly impacts workers’ health in a noxious manner, deserving a tailored occupational health approach whose priority areas and strategies have been determined.Introdução: A violência no local de trabalho é um dos principais fatores de risco no mundo do trabalho. Os trabalhadores da saúde apresentam um risco superior. O nosso estudo teve como objetivo caracterizar a violência física e verbal num hospital público e definir estratégias de prevenção e vigilância em saúde ocupacional. Material e Métodos: Estudo observacional transversal monocêntrico, conduzido num hospital público em Lisboa com trabalhadores da saúde. Foi realizado um inquérito qualitativo com entrevistas em profundidade a seis trabalhadores e um inquérito quantitativo com questionários a 32 trabalhadores. Aceitou-se um nível de significância de 5% na avaliação das diferenças estatísticas. O teste de Mann-Whitney e o teste exato de Fisher foram usados para calcular os valores de p. Resultados: Os principais resultados são: (1) 41 episódios reportados na fase quantitativa; (2) 5/21 [23,81%] vítimas notificaram o incidente; (3) 18/21 [85.71%] vítimas reportaram estados de hipervigilância permanente; (4) 22/28 [78,57%] participantes não conheciam ou conheciam mal os procedimentos de notificação; (5) 24/28 [85,71%] consideravam possível minimizar o problema. Discussão: A violência é favorecida pelo acesso livre às zonas de trabalho, ausência de agentes de segurança e polícia ou falta da respetiva intervenção. A baixa notificação contribui para a ausência de medidas organizacionais. O estado de hipervigilância relatado reflete o efeito prejudicial da exposição a fontes de stress e ameaça. Conclusão: A violência no local de trabalho é um fator de risco relevante, com impacto negativo na saúde dos trabalhadores e merece uma abordagem individualizada no âmbito da saúde ocupacional, cujas áreas e estratégias prioritárias foram definidas neste estudo. Palavras-chave: Fatores de Risco Profissionais; Prevenção; Saúde Ocupacional; Trabalhadores da Saúde; Violência no Local de trabalho.info:eu-repo/semantics/publishedVersio

    Fabrico rápido de implantes ósseos personalizados

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    Actualmente existem situações clínicas específicas relacionadas com perdas ou correcções ósseas significativas, cuja solução dificilmente poderá ser alcançada com implantes ou próteses disponíveis comercialmente, sendo necessário o recurso a soluções personalizadas (ditas customizadas), isto é, implantes que são concebidos e fabricados em função das especificidades do paciente. Neste sentido, o desenvolvimento de uma nova metodologia que permita o fabrico rápido de implantes ósseos em simultâneo com o acto cirúrgico poderá apresentar vantagens significativas, pois permite ao cirurgião corrigir ou alterar a geometria do implante em função de uma qualquer ocorrência anómala detectada já durante a cirurgia. A abordagem neste trabalho passou pelo desenvolvimento de uma aplicação informática que permitisse integrar numa única plataforma um conjunto de ferramentas como scanner 3D, sistema de fabrico assistido por computador (CAM) e fabrico em máquinas controladas por computador (CNC) para assim fabricar de forma rápida um implante adaptado à anatomia do paciente. O método estabelecido assentou em quatro etapas essenciais: a primeira consiste na captação da geometria do implante, realizada localmente pelo cirurgião e não envolve meios computacionais. A segunda consiste na obtenção do modelo virtual da geometria do implante, realizada a partir do levantamento de forma do modelo obtido na etapa anterior, utilizando um scanner 3D por laser. A terceira etapa consiste na utilização de um sistema CAM para a elaboração do programa de maquinagem do implante. Na quarta e última etapa materializa- se o fabrico do implante numa fresadora CNC. O sistema desenvolvido permitiu integrar recursos e tecnologias cuja utilização exige conhecimentos muito especializados, mas inseridos num ambiente amigável para o utilizador possibilita que estes possam ser utilizados por pessoas não profundamente conhecedoras das tecnologias integradas. A solução implementada revelou-se mais acessível ao nível dos custos de aquisição das tecnologias de suporte e da facilidade de utilização quando comparada com outros processos de fabrico de implantes customizados, nomeadamente os obtidos a partir de informação gerada por tomografia computorizada (TAC)

    The effect of inventory record inaccuracy in information exchange supply chains

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    The goal of this paper is to quantify the impact of Inventory Record Inaccuracy on the dynamics of collaborative supply chains, both in terms of operational performance (i.e. order and inventory stability), and customer service level. To do so, we model an Information Exchange Supply Chain under shrinkage errors in the inventory item recording activity of their nodes, present the mathematical formulation of such supply chain model, and conduct a numerical simulation assuming different levels of errors. Results clearly show that Inventory Record Inaccuracy strongly compromises supply chain stability, particularly when moving upwards in the supply chain. Important managerial insights can be extracted from this analysis, such as the role of 'benefit-sharing' strategies in order to guarantee the advantage of investments in connectivity technologies

    Ensaios de integridade estrutural de placas angulares de fixação de fracturas ósseas do fémur

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    Neste trabalho descreve-se o projecto de um dispositivo mecânico desenvolvido para a realização de ensaios segundo a norma ASTM F384-00 (2000) de placas de osteossíntese anguladas. O dispositivo foi objecto de uma análise estrutural usando o método dos elementos finitos. Algumas placas foram ensaiadas estaticamente e suas características mecânicas, de acordo com a norma, determinadas

    Sistema de fabrico rápido de implantes ortopédicos

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    Este estudo teve como objectivo o desenvolvimento uma metodologia de fabrico rápido de implantes ortopédicos, em simultaneidade com a intervenção cirúrgica, considerando duas potenciais aplicações na área ortopédica: o fabrico de implantes anatomicamente adaptados e o fabrico de implantes para substituição de perdas ósseas. A inovação do trabalho desenvolvido consiste na obtenção in situ da geometria do implante, através da impressão directa de um material elastomérico (polivinilsiloxano) que permite obter com grande exactidão a geometria pretendida. Após digitalização do modelo obtido em material elastomérico, o implante final é fabricado por maquinagem recorrendo a um sistema de CAD/CAM dedicado. O implante após esterilização, pode ser colocado no paciente. O conceito foi desenvolvido com recurso a tecnologias disponíveis comercialmente e de baixo custo. O mesmo foi testado sob a forma de uma artroplastia da anca realizada in vivo numa ovelha. O acréscimo de tempo de cirurgia foi de 80 minutos sendo 40 directamente resultantes do processo de fabrico do implante. O sistema desenvolvido revelou-se eficiente no alcance dos objectivos propostos, possibilitando o fabrico de um implante durante um período de tempo perfeitamente compatível com o tempo de cirurgia.This study, aimed the development of a methodology for rapid manufacture of orthopedic implants simultaneously with the surgical intervention, considering two potential applications in the fields of orthopedics: the manufacture of anatomically adapted implants and implants for bone loss replacement. This work innovation consists on the capitation of the in situ geometry of the implant by direct capture of the shape using an elastomeric material (polyvinylsiloxane) which allows fine detail and great accuracy of the geometry. After scanning the elastomeric specimen, the implant is obtained by machining using a CNC milling machine programmed with a dedicated CAD/CAM system. After sterilization, the implant is able to be placed on the patient. The concept was developed using low cost technology and commercially available. The system has been tested in an in vivo hip arthroplasty performed on a sheep. The time increase of surgery was 80 minutes being 40 minutes the time of implant manufacturing. The system developed has been tested and the goals defined of the study achieved enabling the rapid manufacture of an implant in a time period compatible with the surgery time

    Erasmus experience between the University of Cadiz (Spain) and the University of Algarve (Portugal)

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    A mobility program was carried out during the last two years between the Universities of Cadiz (Spain) and Algarve (Portugal) under the EU funded Erasmus+ Mobility for Teaching. The objective of the mobility was twofold: on one hand, it included the strengthening of the existing scientific cooperation between the University of Cadiz (home institution) and the University of Algarve (host institution) in the field of the Gulf of Cadiz Physical Oceanography; on the other hand, it pretended to improve the teaching quality, focusing on both the lecturers and the students. Both institutions have long ties of cooperation that have recently been intensified under the umbrella of the International Campus of Marine Excellence (CeiMar). Specific objectives oriented towards the lecturers included the exchange of teaching experiences among them as well as the comparison of teaching strategies and methodologies between the host and home institutions at the Master level in order to evaluate and enhance the best teaching practices with the aim of improving the students learning process. Specific objectives oriented towards the students included: (1) to provide local students that cannot afford studying a Master degree abroad with a foreign teacher in the discipline that will offer them different added expectations; (2) to teach students different subjects from those taught at the host institution, thus benefitting from new scientific knowledge and experiences. It must be pointed out that the subject taught by the home institution lecturer represents a competence lacking at the host institution, hence complementing the program of the discipline and providing an added value to the Master degree. Informal questionnaires carried out among students by the host institution revealed that they evaluated having a foreign teacher as a very positive experience. In terms of research, collaboration among both institutions is of great importance because they are both located within the same geographic region and hence, they share common interests. The mobility promoted finishing on-going collaborative publications as well as sharing new research experiences, data and knowledge, hence leading to an improvement of the Physical Oceanography state-of-the-art in the Gulf of Cadiz. In fact, two scientific papers on the Gulf of Cadiz circulation system and two on the storm climate along the Gulf of Cadiz and its relation with coastal hazards have been recently published as a direct result of the mobility program.info:eu-repo/semantics/publishedVersio

    Family: the challenge of prevention of drug use.

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    CONTENTS OF THE BOOK From the original research for the knowledge and evaluation of family prevention programs in the five European countries we decided to enrich our study with different contributions in this field. Thus, some researchers have contributed to the organization of this book, having participated in the elaboration of some chapters. In the first chapter a description and a socio-historical framework of the evolution of the prevention concept are made. Throughout the years we have been learning how to better define and interpret the true meaning of drug use primary prevention. From the information to prevention as science a long way has been covered in a short period of time. In the second chapter we mention and describe all the existing theoretical models. We remind you that only some time ago preventive interventions were performed according to the idea that information on drugs was necessary and sufficient to avoid youngsters using them. The prevention models give support and frame the different preventive interventions, justifying the options made. In the third chapter, and based on the wider and deeper knowledge on protective and risk factors, we present the prevention strategies more often used. We also describe the preventive programs mentioned in the three areas we highlighted: Family – School – Community. In Chapter 4, after the definition of our research aims, we present the grids used in the reading of the selected projects in the five countries. They are two distinct grids that help us to understand the different levels of preventive intervention: a) one, which we call Level I grid, that refers to all the preventive interventions socalled occasional; b) Level II grid, which mentions long time actions with a theoretical framework. We also present and discuss the obtained data. In the fifth chapter we present the contribution of three of our researchers, approaching several themes. Professor Boyer, bearing in mind the results of IREFREA’s research (Mendes & Relvas et al, 1999) develops the issue of religion/spirituality as a protective factor. Dr. Susanna Pietralunga describes the preventive activities in family context and their evolution, from the Italian reality. Professor Paula Relvas approaches the family life cycle: a framework for primary prevention of drug use. In Chapter 7 the conclusions of our work are presented and a series of orientations are suggested, taking into account future preventive activities in family context

    Physical oceanography of the western Iberia ecosystem: latest views and challenges.

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    The present review is focused on the mesoscale physical processes recognized in the Western Iberia Ecosystem, complementing earlier reviews dedicated to larger scales. Recent studies support the idea that the mesoscale processes, superimposed on the larger scale variability, are the major factor controlling the ecosystem functioning in the region. A complex structure of interleaved alongshore slope, shelf and coastal currents that interact with eddies, buoyant plumes, upwelling filaments and fronts, surface layer expressions of the subsurface circulation and internal waves is revealed by the latest research. All of these contribute in different ways to have an effect on the ecosystem. The supposedly less variable winter circulation also exhibits significant mesoscale activity, in the form of eddy shedding from the poleward slope current, intermittent upwelling events and transient nearshore poleward flows. The present incomplete knowledge of this complex system presents a number of challenges and questions that must be addressed if we are to arrive at a satisfactory understanding and predictive capability for the system as a whole
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