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Acoustic investigation of wall jet over a backward-facing step using a microphone phased array

Autor: Raimund F. Perschke, Ganesh Raman, Rakesh C. Ramachandran

Publikováno v: Journal of Sound and Vibration. 336:46-61

The acoustic properties of a wall jet over a hard-walled backward-facing step of aspect ratios 6, 3, 2, and 1.5 are studied using a 24-channel microphone phased array at Mach numbers up to M=0.6. The Reynolds number based on inflow velocity and step

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c8b0599f37de9623e46b1c0e6a424fbe
https://doi.org/10.1016/j.jsv.2014.09.008

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Treatment of intramedullary spinal cavernoma: clinical presentation, microsurgical approach and postoperative long-term outcome in 48 cases

Autor: Reitz, M, Burkhardt, T, Raimund, F, Regelsberger, J, Westphal, M, Eicker, SO

Publikováno v: 66. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC); 20150607-20150610; Karlsruhe; DOCMI.07.09 /20150602/

Objective: Spinal cavernomas (SC) depict a rare entity in spinal lesions, but causal surgical treatment and definite cure is reachable. Operative strategies are very demanding due to the vulnerability of the spinal cord with possibly permanent neurol

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Die Therapie von degenerativen Veränderungen der Lendenwirbelsäule mittels Fusionsoperation. Eine Fallserie von 662 konsekutiv versorgten Patienten

Autor: Fritzsche, E, Raimund, F

Publikováno v: 132. Kongress der Deutschen Gesellschaft für Chirurgie; 20150428-20150501; München; DOC15dgch025 /20150424/

Einleitung: Die Versorgung von degenerativen, entzündlichen und tumorösen Wirbelsäulenerkrankungen nimmt kontinuierlich zu. Die Ursachen hierfür sind sicherlich multifaktoriell bedingt. Auch eine Zunahme der revisionspflichtigen Komplikationen is

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Spinal cord cavernous malformations - a 25 year experience in 42 surgical treated cases

Autor: Raimund, F., Burkhardt, T., Schmidt, N.O., Regelsberger, J., Westphal, M.

Publikováno v: 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS); 20120613-20120616; Leipzig; DOCFR.06.11 /20120604/

Objective: Spinal cord cavernous malformations (CM) are rare, they account for 5–12% of all spinal vascular tumors. The annual bleeding rate is reported to reach 4.5% assuming lesion presence since birth, and an annual re-bleeding rate of 66% per y

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Intraoperative ICG-angiography in cervical perimedullar fistula and its impact on surgical decision making

Autor: Burkhardt, T, Raimund, F, Regelsberger, J, Westphal, M

Publikováno v: 62. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgen (PNCH); 20110507-20110511; Hamburg; DOCP 015 /20110428/

Objective: Perimedullar cervical fistulas are rare and present with a complex vascular architecture. Surgical elimination of the pathology, often located in the cervical spine, must include preservation of nutritive vessels under all circumstances in

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Prognostic use of DT-MRI in patients with cervical spondylotic myelopathy – preliminary results

Autor: Raimund, F, Foerster, AF, Fiehler, J, Regelsberger, J, Schmidt, NO, Westphal, M

Objective: Prediction of outcome after surgery in patients with cervical spondylotic myelopathy remains difficult. Recent studies suggested a correlation between the extent of signal changes on the preoperative MRI and the clinical outcome but a mean

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Spinal diffusion tensor magnetic resonance imaging in cervical intramedullary pathologies

Autor: Raimund, F, Foerster, AF, Schmidt, NO, Fiehler, J, Regelsberger, J, Westphal, M

Publikováno v: 61. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC) im Rahmen der Neurowoche 2010; 20100921-20100925; Mannheim; DOCP1798 /20100916/

Objective: Diffusion tensor magnetic resonance imaging (DTI) is a frequently used technique for the preoperative work-up of intracerebral tumors. A shift of fiber tracts can be made visible and might influence surgical tactics in order to reduce morb

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Congenital cervical tethered cord in an adult – utility of spinal diffusion tensor MR imaging

Autor: Schmidt, NO, Raimund, F, Foerster, AF, Fiehler, J, Winkler, D, Westphal, M

Publikováno v: 61. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC) im Rahmen der Neurowoche 2010; 20100921-20100925; Mannheim; DOCP1811 /20100916/

Objective: Tethering of the spinal cord rarely occurs in the cervical region and the presentation in adulthood is extremely rare. Here, we report the case of a 30-year old female with a progressive symptomatic cervical tethered cord presenting with p

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