2,524 research outputs found

    MassMine: Collecting and Archiving Big Data for Social Media Humanities Researchers

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    The MassMine project team representing participants from the Department of English, George A. Smathers Libraries (Libraries), and Research Computing at the University of Florida (UF) requests $60,000 to finish the version 1.0 release, develop a robust training program, and promote the MassMine open source software. MassMine enables researchers to collect their own social media data archives and supports data mining, thus providing free access to big data for academic inquiry. MassMine further supports researchers in creating and defining methods and measures for analyzing cultural and localized trends, and developing humanities research questions and data mining practices. The primary aims of this project are to: 1) refine the MassMine tools to support collection, acquisition, and use of available social media and web data; and, 2) develop a training program and corresponding online resources for supporting the broad use of MassMine by humanities researchers, regardless of experience

    Dural arteriovenous fistula: Two cases presentation

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    Dural arteriovenous fistula (DAVF) are abnormal shunts between dural arteries and veins or venous sinuses of the dura mater. Also the connections may be between pachymeningeal arteries from cortical arteries and veins or sinus from dura mater. There are uncommon pathologic entities, 6-8 % from supratentorial vascular malformations, and about 20-30% of infratentorial vascular pathology (8). The incidence may be higher because only 10% are symptomatic. The clinical manifestations are very variable from simple cephalea to major intracranial hemorrhagic ictus. The presentation is usually in the adult period,but are citied cases in childhood. In our country the diagnostic was difficult before the digital substraction angiography ( DSA) and the endovascular treatment was started in 2004 in our Department under coordination of professor Patrick Courtheoux from Caen, France

    Mechanical thrombectomy techniques for acute ischemic stroke

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    Mechanical thrombectomy technique was introduced as an effective and secure method in acute ischemic stroke patients suffering from intracranial large vessel occlusion (LVO). In this article, we will review the main mechanical thrombectomy techniques and current trends in this type of treatment for acute ischemic stroke

    Phase Transition in a Self-repairing Random Network

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    We consider a network, bonds of which are being sequentially removed; that is done at random, but conditioned on the system remaining connected (Self-Repairing Bond Percolation SRBP). This model is the simplest representative of a class of random systems for which forming of isolated clusters is forbidden. It qualitatively describes the process of fabrication of artificial porous materials and degradation of strained polymers. We find a phase transition at a finite concentration of bonds p=pcp=p_c, at which the backbone of the system vanishes; for all p<pcp<p_c the network is a dense fractal.Comment: 4 pages, 4 figure

    itanium mesh cranioplasty for patients with large cranial defects: Technical notes

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    We propose to describe some personal points of view concerning the repair of large cranial defects using titanium mesh, and in this sense we present few cases. Also we expose the presurgical planning by 3D imaging acquisition with the radiologic digital system which allow a computer aided design for a precise measurement of the shape and the curvature of cranial defect

    Acute intracerebral haemorrhage complication after carotid artery stenting

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    Intracranial hemorrhage following carotid artery stenting is a recognized rare complication but with potentially devastating evolution. Reports of acute cerebral hemorrhage injury following internal carotid artery (ICA) angioplasty are few, and usually were discussed in correlation with hyperperfusion syndrome. In this article we present a patient who experienced a fatal ipsilateral basal ganglia hemorrhage within 10 minutes after carotid angioplasty and stent placement

    First experience in intracranial aneurysm occlusion by balloon assisted coiling technique

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    Particular anatomical situation like wide-neck aneurysms or a large neck/fundus ratio, located on an arterial bifurcation or a small artery, are still a challenge for endovascular coil occlusion. These are due to the risk of coil migration or coil protrusion into the parent vessels. In our study we describe the balloon assisted coiling technique regarding the efficacy and safety of its practice and the problems that could appear

    Embolic materials for cerebral endovascular theraphy

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    Cerebral embolization is one of the most important procedures in neuroendovasculare intervention. Fast developments of new microcatheters that can be maneuvered endovascularly into the brain have permitted the treatment of lesions without conventional neurosurgery. Also, the progress in biomaterial science has contributed significantly to the development of this new therapeutic modality.&nbsp;Various embolic materials in clinical use are reviewed, such as cyanoacrylates, ethylene-vinyl alcohol copolymer mixtures, Ethibloc, ethanol, estrogen, poly(vinyl acetate), cellulose acetate polymer, poly(vinyl alcohol), gelatin sponges, microfibrillar collagen, surgical silk sutures, detachable balloons, and coils. These materials are reviewed in the context of treatment application for various brain lesions, such as arteriovenous malformations, cerebral aneurysms, and head and neck tumors. Further developments in biomaterial polymer science can bring about progress against brain diseases
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