84 research outputs found

    Eyelid Edema: A Rare Cause of a Common Sign

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    We report a 48-year-old female patient who presented to the emergency room with right eyelid edema, with 3 days of evolution. She had suffered minor trauma to this eye one week before. She reported episodes of right eyelid swelling of spontaneous resolution since the occurrence of a traumatic brain injury 5 years ago. Ophthalmological examination showed a soft and painless eyelid edema of the right eye. Brain computed tomography showed an area of bone discontinuity of the orbital roof with brain herniation and a CSF leak into the eyelid (blepharocele). Magnetic resonance confirmed the result of TC and revealed an area of frontal encephalomalacia. Ibuprofen (800 mg/day) was prescribed, with complete resolution within 20 days. She was evaluated by Neurosurgery with no indication of surgery due to the resolution of the edema and absence of symptoms. Blepharocele is a rare entity that should be considered in the differential diagnosis of unilateral eyelid edema. It can be secondary to an orbital fracture or congenital lesion.info:eu-repo/semantics/publishedVersio

    Evaluating seawater quality objectives: Application to the Andalusian littoral

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    The University of Cadiz (southern Spain) and the Andalusian Environmental Agency (AMA) have signed an agreement to draw up a proposal of quality objectives for Andalusian littoral waters in accordance with the classification of zones approved in the Andalusian Littoral Waters Quality Objectives Regulations (Decree 14/1996, 01-16-1996, BOJA no. 19, 02-08-1996). The present paper reviews different regulations (European Union, Spain and the United States) concerning seawater quality criteria and presents the quality criteria proposed by the University of Cadiz.La Universidad de Cádiz y la Agencia de Medio Ambiente Andaluza (AMA) han desarrollado un convenio cuya finalidad es la realización de una propuesta de objetivos de calidad para las aguas litorales andaluzas según la clasificación de zonas establecida en el Decreto 14/1996, por el que se aprueba el Reglamento de Calidad de las Aguas Litorales Andaluzas (BOJA n.° 19 de 8 de febrero de 1996). En este trabajo se hace una revisión de la normativa referente a los objetivos de calidad de las aguas marinas en la Unión Europea, España y Estados Unidos. Además, se recoge la propuesta de objetivos de calidad de aguas litorales realizada por la Universidad de Cádiz.Instituto Español de Oceanografí

    Firing deformation in large size porcelain tiles. Effect of compositional and process variables

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    Ponencia presentada en el XV Congreso Mundial de la Calidad Del Azulejo y del Pavimento Cerámico (QUALICER 18), celebrado en Castellón (Spain) los días 12 y 13 de febrero de 2018.The manufacture of porcelain stoneware has undergone a spectacular growth in the last years, as a result of the good technical and functional performance associated to the impervious feature of the sintered product, together with the great technological advance that the ceramic tile manufacturing sector is experiencing [1]. To such an extent, that today, porcelain stoneware is the most demanded product for use in flooring surfaces, but at the same time, it is becoming important to incorporate in other applications such as ventilated facades

    Wireless RF camera monitoring for underwater cooperative robotic archaeological applications

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    The increasing demand for underwater robotic intervention systems around the world in several application domains requires of more versatile and inexpensive systems. One example of such applications is the archaeology, where experimented divers study and reconstruct the history, recovering key objects in order to classify and preserve them properly. Moreover, this task is especially dangerous at deeps below 50 meters, where the archaeologist needs more sophisticated diving equipment and degree of experience due to high risk to which it is exposed caused by possible decompression situations. The use of supervised semi-autonomous robots can help to this task. To achieve this goal, a wireless communication system can provide freedom of movements to the robot and, at the same time, will allow the operator to get camera feedback and supervise the intervention.Peer Reviewe

    Underwater Wireless Vision System Using Progressive Image Compression and Region of Interest

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    [ES] La creciente demanda en todo el mundo de sistemas de intervención submarina en diversos dominios de aplicación requiere sistemas más versátiles y económicos. Empleando un sistema de comunicación inalámbrica, los robots semiautónomos supervisados disponen de libertad de movimientos y, al mismo tiempo, permiten al operador obtener información visual y supervisar la intervención. Por otro lado, la velocidad de transmisión de datos típica de los canales inalámbricos submarinos es, en general, muy limitada, siendo necesaria la aplicación de técnicas de compresión avanzadas. En este artículo se presenta principalmente el algoritmo DEBT (Depth Embedded Block Tree) para la compresión progresiva de imágenes con región de interés (ROI). Los resultados demuestran ventajas con respecto a otros algoritmos de compresión, y la posibilidad de ejecución del algoritmo en tiempo real en ordenadores embebidos de bajo consumo basados en ARM.[EN] The increasing demand for underwater robotic intervention systems around the world in several application domains requires more versatile and inexpensive systems. By using a wireless communication system, supervised semi-autonomous robots have freedom of movement and, at the same time, allows the operator to get camera feedback and supervise the intervention. On the otherhand, the typical data rate of the wireless submarine channels is generally very limited, requiring the application of advanced compression techniques. In this paper we present the DEBT (Depth Embedded Block Tree) algorithm for the progressive compressionof images with region of interest (ROI). The results demonstrate advantages with other compression algorithms, and the possibilityof executing the algorithm in real time on ARM-based embedded low-power computers.Este trabajo ha sido parcialmente financiado por el Ministerio de Economía y competitividad, código de proyecto DPI2014-57746-C3 (proyecto MERBOTS), por la Generalitat Valenciana GVA, con el código de proyecto PROMETEO/2016/066 y por la Universidad Jaume I, proyecto MASUMIA (P1-1B2015-68), becas PREDOC/2012/47, PREDOC/2013/46, y por el CNPq del Brasil.Rubino, EM.; Centelles, D.; Sales, J.; Martí, JV.; Marín, R.; Alvares, AJ.; Sanz, PJ. (2017). Sistema de Visión Subacuático Inalámbrico Usando un Algoritmo de Compresión Progresivo con Región de Interés. Revista Iberoamericana de Automática e Informática industrial. 15(1):46-57. https://doi.org/10.4995/riai.2017.8953OJS4657151Adams, M., Kossentini, F., Sept 2000. Jasper: a software-based JPEG-2000 codec implementation. In: Image Processing, 2000. Proceedings. 2000 International Conference on. Vol. 2. pp. 53-56.Calderbank, A., Daubechies, I., Sweldens, W., Yeo, B.-L., 1998. Wavelet transforms that map integers to integers. Applied and Computational Harmonic Analysis 5 (3), 332 - 369. URL: http://www.sciencedirect.com/science/article/pii/S1063520397902384 https://doi.org/10.1006/acha.1997.0238Carreras, M., Ridao, P., García, R., Ribas, D., Palomeras, N., 2012. Inspección visual subacuática mediante robótica submarina. Revista Iberoamericana de Automática e Informática Industrial RIAI 9 (1), 34-45. https://doi.org/10.1016/j.riai.2011.11.011Delaunay, X., Thiebaut, C., Chabert, M., Charvillat, V., Morin, G., Oct. 2010. Progressive coding of satellite images with regions of interest. In: On-Board Payload Data Compression Workshop. Toulouse, France.Farr, N., Bowen, A., Ware, J., Pontbriand, C., Tivey, M., May 2010. An integrated, underwater optical /acoustic communications system. In: OCEANS 2010 IEEE - Sydney. pp. 1-6. https://doi.org/10.1109/OCEANSSYD.2010.5603510Moinuddin, A., Khan, E., May 2006. Wavelet based embedded image coding using unified zero-block-zero-tree approach. In: Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on. Vol. 2. pp. II-II. https://doi.org/10.1109/ICASSP.2006.1660377Pearlman, W., Islam, A., Nagaraj, N., Said, A., Nov 2004. Efficient, low-complexity image coding with a set-partitioning embedded block coder. Circuits and Systems for Video Technology, IEEE Transactions on 14 (11), 1219-1235. https://doi.org/10.1109/TCSVT.2004.835150Pelekanakis, C., Stojanovic, M., Freitag, L., Sept 2003. High rate acoustic link for underwater video transmission. In: OCEANS 2003. Proceedings. Vol. 2. pp. 1091-1097 Vol.2. https://doi.org/10.1109/OCEANS.2003.178494Prats, M., del Pobil, A. P., Sanz, P. J., 2013. Robot physical interaction through the combination of vision, tactile and force feedback. Applications to assistive robotics. Springer Tracts in Advanced Robotics, Volume 84. Springer Publishing Company, Incorporated. https://doi.org/10.1007/978-3-642-33241-8Rehna, V. J., Kumar, M. K. J., 2012. Wavelet based image coding schemes: A recent survey. CoRR abs/1209.2515. URL: http://arxiv.org/abs/1209.2515Ribas, J., Sura, D., Stojanovic, M., Sept 2010. Underwater wireless video transmission for supervisory control and inspection using acoustic OFDM. In: OCEANS 2010. pp. 1-9. https://doi.org/10.1109/OCEANS.2010.5663839Said, A., Pearlman, W., Jun 1996. A new, fast, and efficient image codec based on set partitioning in hierarchical trees. Circuits and Systems for Video Technology, IEEE Transactions on 6 (3), 243-250. https://doi.org/10.1109/76.499834Sanz, P. J., Pe-alver, A., Sales, J., Fornas, D., Fernández, J. J., Perez, J., Bernabé 'e, J. A., Oct 2013a. GRASPER: A multisensory based manipulation system for underwater operations. In: 2013 IEEE International Conference on Systems, Man, and Cybernetics (SMC). IEEE, Manchester, UK. https://doi.org/10.1109/SMC.2013.689Sanz, P. J., Pe-alver, A., Sales, J., Fernández, J. J., Pérez, J., Fornas, D., García, J., Marin, R., Sep 2015. Multipurpose underwater manipulation for archaeological intervention. In: Sixth International Workshop on Marine Technology (MARTECH'15). Cartagena, Spain.Sanz, P. J., Prats, M., Ridao, P., Ribas, D., Oliver, G., Orti, A., September 2010. Recent progress in the RAUVI project. A reconfigurable autonomous underwater vehicle for intervention. In: 52-th International Symphosium ELMAR-2010. Zadar, Croatia, pp. 471-474.Sanz, P. J., Ridao, P., Oliver, G., Casalino, G., Petillot, Y., Silvestre, C., Melchiorri, C., Turetta, A., Sept 2013b. TRIDENT: An european project targeted to increase the autonomy levels for underwater intervention missions. In: OCEANS'13 MTS/IEEE conference. San Diego, CA, pp. 1-10.Shan Jiang, S. G., 2011. Electromagnetic wave propagation into fresh water. Journal of Electromagnetic Analysis and Applications 3 (7), 261-266. https://doi.org/10.4236/jemaa.2011.37042Shaw, A., Al-Shamma'a, A., Wylie, S., Toal, D., Sept 2006. Experimental investigations of electromagnetic wave propagation in seawater. In: Microwave Conference, 2006. 36th European. pp. 572-575.Siegel, M., King, R. W. P., Jul 1973. Electromagnetic propagation between antennas submerged in the ocean. Antennas and Propagation, IEEE Transactions on 21 (4), 507-513. https://doi.org/10.1109/TAP.1973.1140525Stojanovic, M., Preisig, J., January 2009. Underwater acoustic communication channels: Propagation models and statistical characterization. Communications Magazine, IEEE 47 (1), 84-89. https://doi.org/10.1109/MCOM.2009.4752682Subedar, M., Karam, L., Abousleman, G., May 2004. An embedded scalingbased arbitrary shape region-of-interest coding method for JPEG2000. In: Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on. Vol. 3. pp. iii-681-4. https://doi.org/10.1109/ICASSP.2004.1326636Taubman, D. S., Marcellin, M.W., 2001. JPEG 2000: Image Compression Fundamentals, Standards and Practice. Kluwer Academic Publishers, Norwell, MA, USA.Usevitch, B., Mar 1996. Optimal bit allocation for biorthogonal wavelet coding. In: Data Compression Conference, 1996. DCC '96. Proceedings. pp. 387-395. https://doi.org/10.1109/DCC.1996.488344W. B. Pennebaker and J. L. Mitchell, 1992. JPEG still image data compression standard. New York: Van Nostrand Reinhold, 1992.Wheeler, F. W., Pearlman, W., 2000. Combined spatial and subband block coding of images. In: Image Processing, 2000. Proceedings. 2000 International Conference on. Vol. 3. pp. 861-864 vol.3. https://doi.org/10.1109/ICIP.2000.899592Zhang, H., Meng, F., Aug 2012. Exploiting the skin effect using radio frequency communication in underwater communication. In: Industrial Control and Electronics Engineering (ICICEE), 2012 International Conference on. pp. 1150-1153. https://doi.org/10.1109/ICICEE.2012.30

    Are there differences in acute phase inflammation markers regarding the type of heart failure?

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    This study aimed to determine if there are differences in inflammatory markers in the acute phase between systolic heart failure and heart failure with preserved systolic function. One hundred and thirty-one patients with acute heart failure were recruited consecutively. At admission, plasma fibrinogen, C-reactive protein, sialic acid, von Willebrand factor, vascular endothelial growth factor, interleukin-6 and NTproBNP were all evaluated. If the ejection fraction was 45% or over patients were included in the HF-PSF group; the remaining patients were included in the SHF group. The HF-PSF patients were older (72±10 vs 63±12 years, P<0.001), presented a higher rate of atrial fibrillation (56.1 vs 21.3%, P<0.001), and had a lower rate of hemoglobin (12.2±2 vs 13.3±2.1 g/dL, P<0.01). No significant differences were observed in the inflammation markers analyzed among SHF and HF-PSF groups. In the acute phase of heart failure there is a marked elevation of inflammatory markers but there are no differences in the inflammatory markers analyzed between the two different types of heart failure

    A transcriptomic analysis of gene expression in the venom gland of the snake Bothrops alternatus (urutu)

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    <p>Abstract</p> <p>Background</p> <p>The genus <it>Bothrops </it>is widespread throughout Central and South America and is the principal cause of snakebite in these regions. Transcriptomic and proteomic studies have examined the venom composition of several species in this genus, but many others remain to be studied. In this work, we used a transcriptomic approach to examine the venom gland genes of <it>Bothrops alternatus</it>, a clinically important species found in southeastern and southern Brazil, Uruguay, northern Argentina and eastern Paraguay.</p> <p>Results</p> <p>A cDNA library of 5,350 expressed sequence tags (ESTs) was produced and assembled into 838 contigs and 4512 singletons. BLAST searches of relevant databases showed 30% hits and 70% no-hits, with toxin-related transcripts accounting for 23% and 78% of the total transcripts and hits, respectively. Gene ontology analysis identified non-toxin genes related to general metabolism, transcription and translation, processing and sorting, (polypeptide) degradation, structural functions and cell regulation. The major groups of toxin transcripts identified were metalloproteinases (81%), bradykinin-potentiating peptides/C-type natriuretic peptides (8.8%), phospholipases A<sub>2 </sub>(5.6%), serine proteinases (1.9%) and C-type lectins (1.5%). Metalloproteinases were almost exclusively type PIII proteins, with few type PII and no type PI proteins. Phospholipases A<sub>2 </sub>were essentially acidic; no basic PLA<sub>2 </sub>were detected. Minor toxin transcripts were related to L-amino acid oxidase, cysteine-rich secretory proteins, dipeptidylpeptidase IV, hyaluronidase, three-finger toxins and ohanin. Two non-toxic proteins, thioredoxin and double-specificity phosphatase Dusp6, showed high sequence identity to similar proteins from other snakes. In addition to the above features, single-nucleotide polymorphisms, microsatellites, transposable elements and inverted repeats that could contribute to toxin diversity were observed.</p> <p>Conclusions</p> <p><it>Bothrops alternatus </it>venom gland contains the major toxin classes described for other <it>Bothrops </it>venoms based on trancriptomic and proteomic studies. The predominance of type PIII metalloproteinases agrees with the well-known hemorrhagic activity of this venom, whereas the lower content of serine proteases and C-type lectins could contribute to less marked coagulopathy following envenoming by this species. The lack of basic PLA<sub>2 </sub>agrees with the lower myotoxicity of this venom compared to other <it>Bothrops </it>species with these toxins. Together, these results contribute to our understanding of the physiopathology of envenoming by this species.</p

    A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)

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    Why Are Outcomes Different for Registry Patients Enrolled Prospectively and Retrospectively? Insights from the Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF).

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    Background: Retrospective and prospective observational studies are designed to reflect real-world evidence on clinical practice, but can yield conflicting results. The GARFIELD-AF Registry includes both methods of enrolment and allows analysis of differences in patient characteristics and outcomes that may result. Methods and Results: Patients with atrial fibrillation (AF) and ≥1 risk factor for stroke at diagnosis of AF were recruited either retrospectively (n = 5069) or prospectively (n = 5501) from 19 countries and then followed prospectively. The retrospectively enrolled cohort comprised patients with established AF (for a least 6, and up to 24 months before enrolment), who were identified retrospectively (and baseline and partial follow-up data were collected from the emedical records) and then followed prospectively between 0-18 months (such that the total time of follow-up was 24 months; data collection Dec-2009 and Oct-2010). In the prospectively enrolled cohort, patients with newly diagnosed AF (≤6 weeks after diagnosis) were recruited between Mar-2010 and Oct-2011 and were followed for 24 months after enrolment. Differences between the cohorts were observed in clinical characteristics, including type of AF, stroke prevention strategies, and event rates. More patients in the retrospectively identified cohort received vitamin K antagonists (62.1% vs. 53.2%) and fewer received non-vitamin K oral anticoagulants (1.8% vs . 4.2%). All-cause mortality rates per 100 person-years during the prospective follow-up (starting the first study visit up to 1 year) were significantly lower in the retrospective than prospectively identified cohort (3.04 [95% CI 2.51 to 3.67] vs . 4.05 [95% CI 3.53 to 4.63]; p = 0.016). Conclusions: Interpretations of data from registries that aim to evaluate the characteristics and outcomes of patients with AF must take account of differences in registry design and the impact of recall bias and survivorship bias that is incurred with retrospective enrolment. Clinical Trial Registration: - URL: http://www.clinicaltrials.gov . Unique identifier for GARFIELD-AF (NCT01090362)
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