24 research outputs found

    Servicio SURAD, 2011 primer año de funcionamiento

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    1 copia .pdf del póster original, presentado en tamaño din A0 en las 4as Jornadas de Análisis de la Red de Bibliotecas del CSIC (Madrid. 26-27 abril, 2012). Más información de las Jornadas en: http://jornadas.urici.csic.es/IVjornadas/El servicio SURAD presenta los resultados del 2011, su primer año de actividad. SURAD es el servicio de localización y suministro de documentos científicos para la comunidad investigadora del CSIC, que atiende aquellas solicitudes que no pueden gestionar en primera instancia sus bibliotecas. SURAD se gestiona a través de la Unidad de Recursos de la Información Científica para la Investigación y integrado dentro del Plan 100% Digital del CSIC. Su objetivo es dar un servicio de acceso al documento a la comunidad científica del CSIC que carece de servicio de biblioteca presencial en su centro/instituto y actuar como servicio de último recurso de obtención de documentos para las bibliotecas de la Red, proporcionando los documentos que éstas no puedan obtener.Peer reviewe

    In vitro degradation and mechanical properties of PLA-PCL copolymer unit cell scaffolds generated by two-photon polymerization

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    The manufacture of 3D scaffolds with specific controlled porous architecture, defined microstructure and an adjustable degradation profile was achieved using two-photon polymerization (TPP) with a size of 2 × 4 × 2 mm3. Scaffolds made from poly(D,L-lactide-co-ε-caprolactone) copolymer with varying lactic acid (LA) and ε -caprolactone (CL) ratios (LC16:4, 18:2 and 9:1) were generated via ring-opening-polymerization and photoactivation. The reactivity was quantified using photo-DSC, yielding a double bond conversion ranging from 70% to 90%. The pore sizes for all LC scaffolds were see 300 μm and throat sizes varied from 152 to 177 μm. In vitro degradation was conducted at different temperatures; 37, 50 and 65°C. Change in compressive properties immersed at 37°C over time was also measured. Variations in thermal, degradation and mechanical properties of the LC scaffolds were related to the LA/CL ratio. Scaffold LC16:4 showed significantly lower glass transition temperature (T g) (4.8°C) in comparison with the LC 18:2 and 9:1 (see 32°C). Rates of mass loss for the LC16:4 scaffolds at all temperatures were significantly lower than that for LC18:2 and 9:1. The degradation activation energies for scaffold materials ranged from 82.7 to 94.9 kJ mol-1. A prediction for degradation time was applied through a correlation between long-term degradation studies at 37°C and short-term studies at elevated temperatures (50 and 65°C) using the half-life of mass loss (Time (M1/2)) parameter. However, the initial compressive moduli for LC18:2 and 9:1 scaffolds were 7 to 14 times higher than LC16:4 (see 0.27) which was suggested to be due to its higher CL content (20%). All scaffolds showed a gradual loss in their compressive strength and modulus over time as a result of progressive mass loss over time. The manufacturing process utilized and the scaffolds produced have potential for use in tissue engineering and regenerative medicine applications

    Back to the Future – In support of a renewed emphasis on generic agility training within sports-specific developmental pathways

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    Perhaps as a consequence of increased specialism in training and support, the focus on engendering and maintaining agility as a generic quality has diminished within many contemporary sports performance programmes. Reflecting this, we outline a rationale suggesting that such a decreased focus represents an oversight which may be detrimental to maximising the potential of performers. We present an evidence-based argument that both generic and specific elements of agility performance should be consistently emphasised within long-term performance-training programmes. We contend that prematurely early specialisation in athlete development models can diminish focus on generic movement skill development with a subsequent detriment in adult performance. Especially when this is coupled with poor primary physical education and limited movement experiences. More speculatively, we propose that generic agility can play a role in operationalising movement development through facilitating skill transfer: thereby enabling the learning of new skills, reduce incidence of injury and facilitating re-learning of old skills during rehabilitation and Return-to-Play processes

    Anti-biofouling coatings for optical fiber sensors

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    One of the most relevant problems of using optical fiber sensors in real-world environments is surface fouling, that is, the cumulative build-up of undesirable material on the working surface of the sensor. The present paper presents the results of tests of anti-biofouling coated fiber optic probes for reflectance spectroscopy in blood-simulating "foul" media, namely Bovine Serum Albumin (BSA) and Fibrinogen. The anti-biofouling coating was a cross-linkable polymer with silane functionality, to improve adhesion to silica-containing substrates

    Visualization of chondrocytes on collagen scaffolds by two-photon microscopy (TPLSM)

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    Schade R, Martini J, Anselmetti D, Liefeith K. Visualization of chondrocytes on collagen scaffolds by two-photon microscopy (TPLSM). CYTOTHERAPY. 2006;8(Suppl. 2): O-117

    Effect of low-temperature post-growth annealing on anisotropic strain in epitaxial Fe layers deposited on GaAs(001)

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    We study the effect of low-temperature post growth annealing on the Fe layer in an epitaxial Fe/GaAs(001) heterojunction. High resolution X-ray diffraction and X-ray reflectivity were used to probe the Fe layer before and after annealing. No change in morphological features like annealing induced intermixing and thickness variation of the Fe layer are observed. However, annealing leads to increase in the compressive strain and improves isotropy of the ferromagnetic layer as revealed by measuring both lateral and out-of-plane lattice components

    2-Photon Laser Scanning Microscopy on Native Human Cartilage and Collagen-Membranes for Tissue Engineering

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    Martini J, Tönsing K, Dickob M, Schade R, Liefeith K, Anselmetti D. 2-Photon Laser Scanning Microscopy on Native Human Cartilage and Collagen-Membranes for Tissue Engineering. In: Proceedings of SPIE. Vol 6089. The International Society for Optics and Photonics (SPIE); 2006: 274-282

    Effect of low-temperature post-growth annealing on anisotropic strain in epitaxial Fe layers deposited on GaAs(001)

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    We study the effect of low-temperature post growth annealing on the Fe layer in an epitaxial Fe/GaAs(001) heterojunction. High resolution X-ray diffraction and X-ray reflectivity were used to probe the Fe layer before and after annealing. No change in morphological features like annealing induced intermixing and thickness variation of the Fe layer are observed. However, annealing leads to increase in the compressive strain and improves isotropy of the ferromagnetic layer as revealed by measuring both lateral and out-of-plane lattice components
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