558 research outputs found

    Spinal cystic echinococcosis - a systematic analysis and review of the literature : part 2. treatment, follow-up and outcome

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    Bone involvement in human cystic echinococcosis (CE) is rare, but affects the spine in approximately 50% of cases. Despite significant advances in diagnostic imaging techniques, surgical treatment and introduction of pharmacological therapy, spinal echinococcosis remains associated with a high degree of morbidity, disability and mortality. We systematically reviewed the published literature of the last five decades to update and summarize the currently existing data on treatment, follow-up and outcome of spinal CE

    Secondary peritoneal echinococcosis causing massive bilateral hydronephrosis and renal failure.

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    A 64-year-old Moroccan man was referred to our clinic for abdominal cystic echinococcosis (CE). He had undergone surgery for hepatic CE 29 years earlier, with no perioperative prophylaxis with albendazole. He presented with abdominal distension and abdominal pain. An ultrasound (US) showed multiple CE3b and CE4 cysts with calcifications and two echo-free collections 13 cm in diameter seen on paraumbilical scans (Figure 1a). The portal tract, pancreas, spleen, kidneys, and aorta were not visible on US. The bladder was compressed by a large cyst. Serology for Echinococcus granulosus was positive (indirect hemagglutination test titer 1/4096; Echinococcus IgG ELISA optical density 6.70)

    Intrinsic and Extrinsic Stability of Ovonic-Switching Devices

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    The time evolution of current and voltage in Ovonicswitching devices is affected, on one side, by parasitic elements due to contacts and connectors and, on the other one, by the internal-relaxation mechanisms of the material itself. The two aspects, respectively termed here \u201cintrinsic\u201d and \u201cextrinsic\u201d dynamics, are investigated in this paper on the basis of the time-dependent, trap-limited conduction model proposed by the authors for investigating this type of devices

    Oral anticoagulant therapy in atrial fibrillation older patients with previous bleeding

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    Oral anticoagulant therapy (OAT) with direct oral anticoagulant (DOACs) is the established treatment to reduce thromboembolic risk in patients with atrial fibrillation (AF). Bleeding risk scores are useful to identify and correct factors associated with bleeding risk in AF patients on OAT. However, the clinical scenario is more complex in patients with previous bleeding event, and the decision about whether and when starting or re-starting OAT in these patients remains a contentious issue. Major bleeding is associated with a subsequent increase in both short- and long-term mortality, and even minimal bleeding may have prognostic importance because it frequently leads to disruption of antithrombotic therapy. There is an unmet need for guidance on how to manage antithrombotic therapy after bleeding has occurred. While waiting for observational and randomized data to accrue, this paper offers a perspective on managing antithrombotic therapy after bleeding in older patients with AF

    Membrane condenser as emerging technology for water recovery and gas pre-treatment: current status and perspectives

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    Abstract The recent roadmap of SPIRE initiative includes the development of "new separation, extraction and pre-treatment technologies" as one of the "key actions" for boosting sustainability, enhancing the availability and quality of existing resources. Membrane condenser is an innovative technology that was recently investigated for the recovery of water vapor for waste gaseous streams, such as flue gas, biogas, cooling tower plumes, etc. Recently, it has been also proposed as pre-treatment unit for the reduction and control of contaminants in waste gaseous streams (SOx and NOx, VOCs, H2S, NH3, siloxanes, halides, particulates, organic pollutants). This perspective article reports recent progresses in the applications of the membrane condenser in the treatment of various gaseous streams for water recovery and contaminant control. After an overview of the operating principle, the membranes used, and the main results achieved, the work also proposes the role of this technology as pre-treatment stage to other separation technologies. The potentialities of the technology are also discussed aspiring to pave the way towards the development of an innovative technology where membrane condenser can cover a key role in redesigning the whole upgrading process

    membrane engineering for environmental protection and sustainable industrial growth options for water and gas treatment

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    The increasing demand for materials, energy and products drives chemical engineers to propose new solutions everyday able to promote development while supporting sustainable industrial growth. Membrane engineering can offer significant assets to this development. Here, they are identified the most interesting aspects of membrane engineering in strategic industrial sectors such as water treatment, energy production and depletion and reuse of raw materials. The opportunity to integrate membrane units with innovative systems to exploit the potential advantages derived from their synergic uses is also emphasized. The analysis of the potentialities of these new technologies is supported by the introduction of process intensification metrics which provide an alternative and innovative point of view regarding the unit performance, highlighting important aspects characterizing the technology and not identified by the conventional analysis of the unit performance
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