A Smart Modular Wireless System for Condition Monitoring Data Acquisition

Smart sensors, big data, the cloud and distributed data processing are some of the most interning changes in the way we collect, manage and treat data in recent years. These changes have not significantly influenced the common practices in condition monitoring for shipping. In part this is due to the reduced trust in data security, data ownership issues, lack of technological integration and obscurity of direct benefit. This paper presents a method of incorporating smart sensor techniques and distributed processing in data acquisition for condition monitoring to assist decision support for maintenance actions addressing these inhibitors

Turismo: llevar el derecho al día a día

[Resumen] La asignatura de Derecho del Grado de Turismo de la Universidad de A Coruña es una materia de primer curso de carrera con seis créditos que constituye la única aproximación al ámbito jurídico civil y mercantil de todo el grado a diferencia de lo que ocurre en su entorno universitario más próximo donde o bien existen más asignaturas del mismo campo de conocimiento o bien su contenido se amplía hasta los 9 créditos. Esto provoca que la enorme densidad del contenido docente, que incluye una parte general civil y una parte especial contractual, hace de la asignatura una materia árida y de muy difícil seguimiento por parte del alumnado, que se ve inmerso en una dinámica frenética de un tema cada semana y media. La experiencia puesta en marcha en los últimos años mediante la reconversión del contenido docente en temas de debate en el aula a través de ejemplos prácticos del día a día del alumnado, ha permitido una mayor implicación de este y una mejora en el rendimiento de los alumnos[Abstract] The subject of Law of the Degree of Tourism of the University of A Coruña is a subject of first course of career with six credits that constitutes the only approximation to the civil and commercial legal scope of the whole degree unlike what happens in its university environment nearest where there are more subjects from the same field of knowledge or their content is extended to 9 credits. This causes that the enormous density of the teaching content, which includes a general civil part and a special contractual part, makes a dry subject and difficult to be followed by the students, who see themselves involved in a frantic dynamics that makes them comprehend a unit every week and a half. The experience launched in recent years, consisting of the restructuration of the educational content in discussion topics seen in the classroom using practical examples taken from students’ day-to-day issues, has allowed students to be more involved and an improvement of their performanc

Condition monitoring for enhanced inspection, maintenance and decision making in ship operations

This paper presents the INCASS (Inspection Capabilities for Enhanced Ship Safety) project which brings innovative solutions to the ship inspection regime by integrating robotic-automated platforms for on-line or on-demand ship inspection activities and selecting the software and hardware tools that can implement or facilitate specific inspection tasks, to provide in- put to the Decision Support System (DSS). Enhanced inspection of ships includes ship structures and machinery monitoring with real time information using ‘intelligent’ sensors and incorporating structural and machinery risk analysis, using in-house structural/hydrodynamics and machinery computational tools. Condition based inspection tools and methodologies, reliability and criticality based maintenance are introduced. An enhanced central database handles ship structures and machinery data. The development and implementation of the INCASS system is shown in the case of ship machinery systems. In this way the validation and testing of the INCASS framework will be achieved in realistic operational conditions

Aseptic Meningitis Associated with Intravenous Immunoglobulin

Aseptic meningitis can be an adverse drug reaction to intravenous immunoglobulin. We describe a previously healthy 4-yearold boy, admitted for idiopathic thrombocytopaenic purpura. He received two infusions of intravenous immunoglobulin. Four hours after the last administration the patient developed a meningeal syndrome. Analysis of cerebrospinal fluid revealed 500 cells/μl (predominantly neutrophils) and normal biochemistry. Bacteriological and virological tests were negative. After 48h he was asymptomatic. Given the absence of other aetiological factors and the temporal relationship between the administration of immunoglobulin and the development of symptoms, we believe the patient had an aseptic meningitis related to intravenous immunoglobulin. This therapy may cause headache, fever and vomiting; however, lumbar puncture is not usually performed, so this complication may be underdiagnosed

Reabsorção radicular relacionada à utilização de aparelhos autoligados

A Reabsorção Radicular Apical Externa (RRAE) é uma das sequelas mais comuns resultantes do tratamento ortodôntico. A sua etiologia é considerada multifatorial, sendo frequentemente associada ao tipo de forças ortodônticas aplicadas e ao tempo de tratamento. Os aparelhos autoligados foram idealizados com a intenção de diminuir o atrito na mecânica ortodôntica, desta forma reduzindo o tempo de tratamento e criar um movimento de deslize eficiente com aplicação de forças menores. O propósito seria obter uma maior eficiência e resultados mais previsíveis de tratamento. O objetivo deste estudo foi realizar uma pesquisa bibliográfica baseada principalmente em publicações científicas a partir de 2010 até a atualidade, relacionando a reabsorção radicular com os aparelhos autoligados, avaliando também a influência de fatores de risco como o tempo de tratamento e as forças aplicadas.The External Apical Radical Resorption (EARR) is one of the most common sequelae resulting from orthodontic treatment. Its etiology is considered multifactorial, being frequently associated with the type of orthodontic forces applied and the time of treatment. The self-ligating devices were designed with the intention of reducing friction in orthodontic mechanics, thus reducing treatment time and creating an efficient sliding movement with the application of smaller forces. The purpose would be to achieve greater efficiency and more predictable treatment results. The objective of this study was to carry out a bibliographical research based mainly on scientific publications from 2010 to the present, relating the root resorption with the self - ligating devices, also evaluating the influence of risk factors such as treatment time and applied forces

Widely tunable optical parametric oscillation in a Kerr microresonator

We report on the first experimental demonstration of widely-tunable parametric sideband generation in a Kerr microresonator. Specifically, by pumping a silica microsphere in the normal dispersion regime, we achieve the generation of phase-matched four-wave mixing sidebands at large frequency detunings from the pump. Thanks to the role of higher-order dispersion in enabling phase matching, small variations of the pump wavelength translate into very large and controllable changes in the wavelengths of the generated sidebands: we experimentally demonstrate over 720 nm of tunability using a low-power continuous-wave pump laser in the C-band. We also derive simple theoretical predictions for the phase-matched sideband frequencies, and discuss the predictions in light of the discrete cavity resonance frequencies. Our experimentally measured sideband wavelengths are in very good agreement with theoretical predictions obtained from our simple phase matching analysis.Comment: 5 pages, 4 figure

Octave-spanning tunable parametric oscillation in crystalline Kerr microresonators

Parametric nonlinear optical processes allow for the generation of new wavelengths of coherent electromagnetic radiation. Their ability to create radiation that is widely tunable in wavelength is particularly appealing, with applications ranging from spectroscopy to quantum information processing. Unfortunately, existing tunable parametric sources are marred by deficiencies that obstruct their widespread adoption. Here we show that ultrahigh-Q crystalline microresonators made of magnesium fluoride can overcome these limitations, enabling compact and power-efficient devices capable of generating clean and widely-tunable sidebands. We consider several different resonators with carefully engineered dispersion profiles, achieving hundreds of nanometers of sideband tunability in each device when driven with a standard low-power laser at 1550 nm. In addition to direct observations of discrete tunability over an entire optical octave from 1083 nm to 2670 nm, we record signatures of mid-infrared sidebands at almost 4000 nm. The simplicity of the devices considered -- compounded by their remarkable tunability -- paves the way for low-cost, widely-tunable sources of electromagnetic radiation.Comment: 10 pages, 4 figures, submitted 1st of November 201

The European commission’s role in marine materials, equipment and components mutual recognition certification

The European Commission has, in the past, updated regulations regarding marine operations in order to enhance safety and protection of the environment. In that respect and with the scope to enhance safety onboard ships, Regulation No 391/2009 and in particular Article 10.1 on certification of ships, suggested that European Union Recognised Organisations (EU ROs) should harmonise their rules and procedures related to certification of materials, equipment and components based on equivalent standards issued by them. As a result the EU ROs Mutual Recognition (MR) scheme was initiated. This paper investigates the current implementation of the requirements of Article 10 through a developed questionnaire and case studies. The results have shown that the current level of implementation is regarded as acceptable and safety is adhered to the highest standard. Moreover, the current implementation needs further improvement and harmonisation of individual rules may be required. EU RO requirements can be further developed in the future as the overall process matures. Additional information and dissemination of the overall MR process is also required engaging additional stakeholders in the marine industry. However, the expansion of the scheme presents challenging issues to overcome including the global acceptance of the MR certification

Structure poisoning in childhood and treatment algorithms at present in Sumy City Children's Hospital

Acute poisoning play a significant role in the pathology of childhood