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Aveiro, Portugal

The University of Aveiro is a Portuguese public university, headquartered in Aveiro since its 1973 creation. It also provides polytechnic education.Administratively, the teaching and research activities are distributed by Departments and Autonomous Sections, both with specialized faculties.The University has more than 12,500 students distributed across 58 graduate courses, over 40 MSc courses and 25 PhD programs.Its main campus is near the centre of Aveiro, including a nearby Administration and Accounting Institute. The university also has external regional campuses in Águeda, Higher Education Technological and Management School of Águeda, and Oliveira de Azeméis Higher Education School of North Aveiro.It is an R&D university, having a research units developing programmes in fundamental and applied mathematics, physics, chemistry, telecommunications, robotics, bioinformatics, sea science, materials, design, business administration and industrial engineering. Wikipedia.

University of Aveiro | Date: 2013-04-26

The present invention describes a low-cost, portable multi-parameter, turbidity sensor based on optical fiber. The sensor quantifies the transmission and scattering of radiation (nephelometry) in a fluid through radiation emission in two or more wavelengths. Inc invention can be used to estimate concentration of suspended sediments, to distinguish the type of sediment based on color, to distinguish different particle-size classes, and to identify and determine the concentrations of different suspended-sediment fractions. The sensor comprises the following elements: radiation emitter of two or more wavelengths (

University of Aveiro | Date: 2014-06-09

The present document describes a dynamic mobility management system. The disclosure describes a mobility management mechanism that is able to maintain the IP address assigned when a session was initiated in the user device to exchange data packets between the end-points of a given data service. This is possible through the management of the distributed mobility anchors, tunnels, interfaces and IP addresses, where a mobile node is configured to bind to the previously accessed mobility access router, such that the previously established network sessions of the mobile node are re-established through said previously accessed mobility access router. The disclosure is applied in the Information and Communication Technology domain, more precisely in the mobility management in communication networks.

The last few decades have witnessed a spiralling growth of interest in polymers from renewable resources within both the scientific and industrial communities. This review attempts to illustrate this state of affairs through a panoramic overview of recent progress in the most relevant areas related to such materials, including the polymerisation of natural monomers and their derivatives, the exploitation of biopolymers, as such, or after appropriate modifications, as well as the preparation of composites and blends. Because of the sheer size and depth of the field, no attempt has been made here to provide a comprehensive coverage, emphasis being placed instead on conveying the extent and originality of contributions reported in the last few years in important domains like sugars and polysaccharides, vegetable oils, lignin, pine resin derivatives, furans, and a series of other monomers. © 2011 The Royal Society of Chemistry. Source

Since their discovery in the 1950s there has been an increasing degree of interest in the hexagonal ferrites, also know as hexaferrites, which is still growing exponentially today. These have become massively important materials commercially and technologically, accounting for the bulk of the total magnetic materials manufactured globally, and they have a multitude of uses and applications. As well as their use as permanent magnets, common applications are as magnetic recording and data storage materials, and as components in electrical devices, particularly those operating at microwave/GHz frequencies. The important members of the hexaferrite family are shown below, where Me = a small 2+ ion such as cobalt, nickel or zinc, and Ba can be substituted by Sr: M-type ferrites, such as BaFe 12O 19 (BaM or barium ferrite), SrFe 12O 19 (SrM or strontium ferrite), and cobalt-titanium substituted M ferrite, Sr- or BaFe 12-2xCo xTi xO 19 (CoTiM).Z-type ferrites (Ba 3Me 2Fe 24O 41) such as Ba 3Co 2Fe 24O 41, or Co 2Z.Y-type ferrites (Ba 2Me 2Fe 12O 22), such as Ba 2Co 2Fe 12O 22, or Co 2Y.W-type ferrites (BaMe 2Fe 16O 27), such as BaCo 2Fe 16O 27, or Co 2W.X-type ferrites (Ba 2Me 2Fe 28O 46), such as Ba 2Co 2Fe 28O 46, or Co 2X.U-type ferrites (Ba 4Me 2Fe 36O 60), such as Ba 4Co 2Fe 36O 60, or Co 2U. The best known hexagonal ferrites are those containing barium and cobalt as divalent cations, but many variations of these and hexaferrites containing other cations (substituted or doped) will also be discussed, especially M, W, Z and Y ferrites containing strontium, zinc, nickel and magnesium. The hexagonal ferrites are all ferrimagnetic materials, and their magnetic properties are intrinsically linked to their crystalline structures. They all have a magnetocrystalline anisotropy (MCA), that is the induced magnetisation has a preferred orientation within the crystal structure. They can be divided into two main groups: those with an easy axis of magnetisation, the uniaxial hexaferrites, and those with an easy plane (or cone) of magnetisation, known as the ferroxplana or hexaplana ferrites. The structure, synthesis, solid state chemistry and magnetic properties of the ferrites shall be discussed here. This review will focus on the synthesis and properties of bulk ceramic ferrites. This is because the depth of research into thin film hexaferrites is enough for a review of its own. There has been an explosion of interest in hexaferrites in the last decade for more exotic applications. This is particularly true as electronic components for mobile and wireless communications at microwave/GHz frequencies, electromagnetic wave absorbers for EMC, RAM and stealth technologies (especially the X and U ferrites), and as composite materials. There is also a clear recent interest in nanotechnology, the development of nanofibres and fibre orientation and alignment effects in hexaferrite fibres, and composites with carbon nanotubes (CNT). One of the most exciting developments has been the discovery of single phase magnetoelectric/multiferroic hexaferrites, firstly Ba 2Mg 2Fe 12O 22 Y ferrite at cryogenic temperatures, and now Sr 3Co 2Fe 24O 41 Z ferrite at room temperature. Several M, Y, Z and U ferrites have now been characterised as room temperature multiferroics, and are discussed here. Current developments in all these key areas will be discussed in detail in Sections 7-11 of this review, and for this reason now is the appropriate time for a fresh and critical appraisal of the synthesis, properties and applications of hexagonal ferrites. © 2012 Elsevier Ltd. All rights reserved. Source

University of Bordeaux 1, French National Center for Scientific Research and University of Aveiro | Date: 2013-08-05

The condylar prosthesis (

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