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Can neck swelling lead to spinal cord compression?

World Journal of Clinical Cases 2013年第1期1卷 56-58页

作者： Emanuele Costi Elena Roca Fabio Spanu federico nicolosi Giovanni Nodari Marco Fontanella Pier Paolo Panciani Department of Neuroscience Division of Neurosurgery University of Brescia 25123 Brescia Italy Department of Neuro-science Division of Neurosurgery University of Torino 10126 Torino Italy

Spinal cord compression(SCC) caused by cervical spinal canal invasion of a pulmonary sarcomatoid carcinoma metastasis has never been reported previously. A 59-year-old man, with a history of pulmonary carcinosarcoma, developed over several weeks important neck swelling. Admitted to our division with severe tetraparesis he underwent a cervical spine computed tomography scan that showed a large cervical mass measuring 11 cm × 27 cm × 17 cm with SCC, extending from the occiput to C7. Emergency spinal cord decompression was performed leading to minor neurological improvement. Poor outcome was due to the unusual clinical sign that led to late diagnosis and treatment.

关键词： Carcinosarcoma Spinal cord compression Spine surgery Tetraparesis Pulmonary sarcomatoid carcinoma

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Downwash modelling for three-lifting-surface aircraft configuration design

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Chinese Journal of Aeronautics 2023年第6期36卷 161-173页

作者： Salvatore CORCIONE Giordana BONAVOLONTÃ Agostino DE MARCO Fabrizio nicolosi Department of Industrial Engineering University of Naples“FedericoⅡ”Naples 8125Italy School of Aerospace Transport&Manufacturing Cranfield UniversityBedford MK43 OALUnited Kingdom

This paper introduces a semi-empirical model to predict the downwash gradient at the horizontal tail of a three-lifting-surface *** superposition principle applied to well established formulations valid for two lifting surfaces is not a reasonable approach to calculate the downwash of a canard-wing-tail layout,and this paper demonstrates that such a basic technique leads to incorrect ***,an ad hoc prediction model is proposed that considers the combined nonlinear effects of canard and main wing inductions on tail downwash,being based on a full factorial design sweep of CFD simulations obtained by varying the main geometrical parameters of the three lifting surfaces.A suitable analytical formula for the downwash gradient is established through a process of data analysis and factor *** presented model extends the validity of the available models for traditional two-lifting-surface designs by means of a correction *** engineering estimation method introduced here exhibits an acceptable accuracy,as well as relatively small prediction errors,and it is suitable for conceptual and preliminary studies of threesurface *** value of this methodology is confirmed by the validation with the results of numerical and experimental investigations on a case study aircraft.

关键词： Aerodynamic modelling Aircraft design Design of experiments Downwash Three-lifting-surface

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Design of hybrid-electric aircraft with fault-tolerance considerations

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Chinese Journal of Aeronautics 2023年第2期36卷 160-178页

作者： Valerio MARCIELLO Francesco OREFICE Fabrizio nicolosi Danilo CILIBERTI Pierluigi DELLA VECCHIA Department of Industrial Engineering University of Naples"FedericoⅡ"Naples 80125Italy

The potential benefits of hybrid-electric or all-electric propulsion have led to a growing interest in this topic over the past *** design of propulsion systems and innovative configurations has been extensively discussed in literature,but steps towards higher levels of technological readiness,optimisation algorithms based on reliable weight estimation and simulationbased mission analysis are *** paper focuses on the integration of a method for evaluating the lateral-directional controllability of an aircraft within a design chain that integrates aero-propulsive interactions,accurate modelling of the fuel system,and mid-fidelity estimation of the structural ***,the present work proposes a strategy for powerplant management in scenarios with an inoperative chain *** of hybrid-electric propulsion on the design of the vertical tail plane are evaluated involving the analysis of multiple failure scenarios and certification *** proposed application concerns a commuter aircraft.

关键词： Distributed electric propulsion Failure management Fault-tolerance analysis Hybrid-electric aircraft Lateral-directional controllability

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