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pro vyhledávání: '"R. Oppelt"'
Akademický článek
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Autor:
Elvira Fortunato, R Oppelt, Isabel M.P.L.V.O. Ferreira, T Harder, A.P Marvão, Rodrigo Martins, C Gonçalves, Jorge Ferreira, J.I. Martins
Publikováno v:
Sensors and Actuators A: Physical. 74:70-76
The aim of this paper is to present results on a new soldering process based on the low-temperature solidification of intermetallic phases from the system Cu–Sn–Cu which can be employed to form a heat-resistant die-attach as well as signal and po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea2c72ae2289f2721f4b5b3459539489
https://doi.org/10.1016/s0924-4247(98)00305-7
https://doi.org/10.1016/s0924-4247(98)00305-7
Autor:
L. Urankar, R. Oppelt
Publikováno v:
IEEE Transactions on Biomedical Engineering. 43:697-707
General analytical expressions for the field attenuation and the reaction factor for a spherical active compensated cabin are theoretically derived. The shielding effect of various materials and their thickness on external magnetic disturbances as we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cab6b7ffd8a6e0ef561af6de39aa771
https://doi.org/10.1109/10.503177
https://doi.org/10.1109/10.503177
Publikováno v:
Review of Scientific Instruments. 61:859-864
Electromagnetic field probes are described which use ultrasonic transmission lines for signal transmission from a small electric or magnetic measuring dipole to the data processing unit. These transmission lines are made of nonmetallic material with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87f50ccf41483d80681bff854069de50
https://doi.org/10.1063/1.1141454
https://doi.org/10.1063/1.1141454
Publikováno v:
1996 IEEE Ultrasonics Symposium. Proceedings.
The fabrication of an acoustic 2-D phased array was investigated. For 3-D imaging at 3.5 MHz an array with 64*64 elements, sizes each 0.22*0.22 mm/sup 2/ covering a footprint of 2*2 cm/sup 2/ was projected. In the authors' modular construction concep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbd75ca91a7990ea7e6aa4e878c112c2
https://doi.org/10.1109/ultsym.1996.584386
https://doi.org/10.1109/ultsym.1996.584386
Autor:
A. Pesavento, R. Oppelt, Helmut Ermert, B. Granz, B. Tillig, Volker Sander, O. Keitmann, Markus Dr. Vester
Publikováno v:
ResearcherID
Ultrasound transmission imaging is an alternative promising modality because unlike x-ray transmission this concept is not ionizing and has a good contrast in tissue imaging. Our concept enables also real time imaging. Earlier designs of transmission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::052481b1753ef73f2020db11b2f7d5ec
https://doi.org/10.1109/ultsym.2000.921632
https://doi.org/10.1109/ultsym.2000.921632
Publikováno v:
Deutsche Gesellschaft für Chirurgie ISBN: 9783540443308
Zielsetzung: Bereits in den 1930er Jahren wurde die Transmissionssonografie als Alternative zur konventionellen Rontgenuntersuchung entwickelt. Mit diesem Verfahren konnen unter Nutzung von transmittierten Schallwellen in Echtzeit ahnliche Bildinform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c73d9d2082e0fbf4d4b78f526d58e5b2
https://doi.org/10.1007/978-3-642-55715-6_509
https://doi.org/10.1007/978-3-642-55715-6_509
Autor:
null Zina Ben Miled, null Yang Liu, D. Powers, O. Bukhres, M. Bem, R. Jones, R. Oppelt, S. Milosevich
Publikováno v:
ACM/IEEE SC 2000 Conference (SC'00).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9a54a94f34dbbce2b6ff5c978178422
https://doi.org/10.1109/sc.2000.10049
https://doi.org/10.1109/sc.2000.10049
Autor:
R. Oppelt
Publikováno v:
23rd European Microwave Conference, 1993.
The quadrature hybrid described below was developed for circular polarizing antennas in magnetic resonance systems. It is based on a 180°/3dB wideband hybrid cascaded with a 90° two-phase network. Due to this combination a quadrature hybrid (90°/3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f6ff450037469a115bea7f7871491af
https://doi.org/10.1109/euma.1993.336641
https://doi.org/10.1109/euma.1993.336641
Akademický článek
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