TY  - JOUR
A1  - Schöning, Michael Josef
T1  - Silicon-based biochemical sensors
JF  - CNI - The Center of Nanoelectronic Systems for Information Technology
Y1  - 2003
SP  - 165
EP  - 170
PB  - Foschungszentrum Jülich
ER  - 
TY  - JOUR
A1  - Baroud, G.
A1  - Wu, J.Z.
A1  - Bohner, M
A1  - Sponagel, Stefan
A1  - Steffen, T.
T1  - How to determine the permeability for cement infiltration into osteoporotic cancellous bone
JF  - Medical Engineering & Physics. 25 (2003), H. 4
N2  - Cement augmentation is an emerging surgical procedure in which bone cement is used to infiltrate and reinforce osteoporotic vertebrae. Although this infiltration procedure has been widely applied, it is performed empirically and little is known about the flow characteristics of cement during the injection process. We present a theoretical and experimental approach to investigate the intertrabecular bone permeability during the infiltration procedure. The cement permeability was considered to be dependent on time, bone porosity, and cement viscosity in our analysis. In order to determine the time-dependent permeability, ten cancellous bone cores were harvested from osteoporotic vertebrae, infiltrated with acrylic cement at a constant flow rate, and the pressure drop across the cores during the infiltration was measured. The viscosity dependence of the permeability was determined based on published experimental data. The theoretical model for the permeability as a function of bone porosity and time was then fit to the testing data. Our findings suggest that the intertrabecular bone permeability depends strongly on time. For instance, the initial permeability (60.89 mm4/N.s) reduced to approximately 63% of its original value within 18 seconds. This study is the first to analyze cement flow through osteoporotic bone. The theoretical and experimental models provided in this paper are generic. Thus, they can be used to systematically study and optimize the infiltration process for clinical practice.
KW  - Osteoporose
KW  - Permeabilität
KW  - Viskose Strömung
KW  - Viskosität
KW  - Vertebroplastie
KW  - Cement infiltration
KW  - Vertebroplasty
KW  - Osteoporosis
KW  - Permeability
KW  - Experiment
KW  - Analysis
KW  - Viscous flow
Y1  - 2003
SN  - 1350-4533
SP  - 283
EP  - 288
ER  - 
TY  - JOUR
A1  - Kraft, Bodo
T1  - Conceptual design mit ArchiCAD 8 : Forschungsprojekt an der RWTH Aachen
N2  - Projektbericht in GraphisoftNews - Architektur und Bauen in einer vernetzten Welt 3/2003 4 Seiten
KW  - CAD
KW  - CAD
KW  - Bauingenieurwesen
KW  - Architektur
KW  - CAD
KW  - civil engineering
KW  - architecture
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Keusgen, M.
A1  - Jünger, M.
A1  - Krest, I.
A1  - Schöning, Michael Josef
T1  - Development of a biosensor specific for cysteine sulfoxides
JF  - Biosensors & Bioelectronics. 18 (2003), H. 5-6
Y1  - 2003
SN  - 0956-5663
SP  - 805
EP  - 812
ER  - 
TY  - JOUR
A1  - Ermelenko, Y.
A1  - Yoshinobu, T.
A1  - Mourzina, Y.
A1  - Schöning, Michael Josef
A1  - Furuichi, K.
A1  - Levichev, S.
A1  - Vlasov, Y.
A1  - Iwasaki, H.
T1  - The double K+/Ca2+ sensor based on laser scanned silicon transducer (LSST) for multicomponent analysis
JF  - Talanta. 59 (2003), H. 4
Y1  - 2003
SN  - 0039-9140
SP  - 785
EP  - 795
ER  - 
TY  - JOUR
A1  - Wang, J.
A1  - Krause, R.
A1  - Block, K.
A1  - Musameh, M.
A1  - Mulchandani, A.
A1  - Schöning, Michael Josef
T1  - Flow injection amperometric detection of OP nerve agents based on organophosphorus-hydrolase biosensor detector
JF  - Biosensors & Bioelectronics. 18 (2003), H. 2-3
Y1  - 2003
SN  - 0956-5663
SP  - 255
EP  - 260
ER  - 
TY  - JOUR
A1  - Keusgen, Michael
A1  - Jünger, Martina
A1  - Krest, Ingo
A1  - Schöning, Michael Josef
T1  - Biosensoric detection of the cysteine sulphoxide alliin
JF  - Sensors and Actuators B. 95 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 297
EP  - 302
ER  - 
TY  - JOUR
A1  - Yoshinobu, T.
A1  - Schöning, Michael Josef
A1  - Otto, R.
A1  - Furuichi, K.
A1  - Mourzina, Y.
A1  - Ermelenko, Y.
A1  - Iwasaki, H.
T1  - Portable light-addressable potentiometric sensor (LAPS) for multisensor applications
JF  - Sensors and Actuators B. 95 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 352
EP  - 356
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Krause, R.
A1  - Block, K.
A1  - Musahmeh, M.
A1  - Mulchandani, A.
A1  - Wang, J.
T1  - A dual amperometric/potentiometric FIA-based biosensor for the distinctive detection of organophosphorus pesticides
JF  - Sensors and Actuators B. 95 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 291
EP  - 296
ER  - 
TY  - JOUR
A1  - Bressel, A.
A1  - Schultze, J.W.
A1  - Khan, W.
A1  - Wolfaardt, G. M.
A1  - Rohns, H.-P.
A1  - Irmscher, R.
A1  - Schöning, Michael Josef
T1  - High resolution gravimetric, optical and electrochemical investigations of microbial biofilm formation in aqueous systems
JF  - Electrochimica Acta. 48 (2003), H. 20-22
Y1  - 2003
SN  - 0013-4686
SP  - 3363
EP  - 3372
ER  - 
TY  - JOUR
A1  - Simonis, A.
A1  - Lüth, H.
A1  - Wang, J.
A1  - Schöning, Michael Josef
T1  - Strategies of miniaturised reference electrodes integrated in a silicon-based „one chip“ pH sensor
JF  - Sensors. 3 (2003), H. 9
Y1  - 2003
SN  - 1424-8220
SP  - 330
EP  - 339
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Thust, M.
T1  - Die „Zukunftswerkstatt Biosensorik“ – ein Netzwerk für Lehre, Forschungs und Wirtschaft
JF  - Fachblatt Fachhochschule Aachen (2003)
Y1  - 2003
SN  - 1430-7707
SP  - 6
EP  - 7
ER  - 
TY  - JOUR
A1  - Mourzina, Y. G.
A1  - Ermelenko, Y. E.
A1  - Yoshinobu, T.
A1  - Vlasov, Y.
A1  - Iwasaki, H.
A1  - Schöning, Michael Josef
T1  - Anionselective light-addressable potentiometric sensors (LAPS) for the determination of nitrate and suphate ions
JF  - Sensors and Actuators B. 91 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 32
EP  - 38
ER  - 
TY  - JOUR
A1  - Simonis, A.
A1  - Ruge, C.
A1  - Müller-Veggian, Mattea
A1  - Lüth, H.
A1  - Schöning, Michael Josef
T1  - A long-term stable macroporoustype EIS structure for electrochemical sensor applications
JF  - Sensors and Actuators B. 91 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 21
EP  - 25
ER  - 
TY  - JOUR
A1  - Thust, Marion
A1  - Mulchandani, Ashok
A1  - Wang, Joseph
A1  - Arzdorf, Michael
A1  - Mulchandani, Priti
A1  - Chen, Wilfried
A1  - Schöning, Michael Josef
T1  - Feldeffekt-Enzymsensor zur Detektion von Pestiziden
JF  - Technisches Messen. 70 (2003), H. 12
Y1  - 2003
SN  - 0171-8096
SP  - 561
EP  - 564
ER  - 
TY  - JOUR
A1  - Keusgen, M.
A1  - Jünger, M.
A1  - Knobbe, D.-T.
A1  - Kloock, Joachim P.
A1  - Schöning, Michael Josef
T1  - Entwicklung eines potentiometrischen Cyanid-Biosensors auf der Basis von EIS-Strukturen
JF  - Sensoren für zukünftige Hochtechnologien und Neuentwicklungen für die Verfahrenstechnik / 6. Dresdner Sensor-Symposium, 8. - 10. Dezember 2003, Dresden. Jörg Peter Baselt; Gerald Gerlach (Hg.)
Y1  - 2003
SN  - 3-935712-92-8
SP  - 235
EP  - 238
PB  - w.e.b.-Univ.-Verl.
CY  - Dresden
ER  - 
TY  - JOUR
A1  - Sponagel, Stefan
A1  - Unger, J.
A1  - Spies, K. H.
T1  - Härtebegriff im Zusammenhang mit Vernetzung, Bruchdehnung und Dauerfestigkeit eines Elastomers
JF  - Kautschuk Gummi Kunststoffe. 56 (2003), H. 11
Y1  - 2003
SN  - 0948-3276
SP  - 608
EP  - 613
ER  - 
TY  - JOUR
A1  - Yoshinobu, T.
A1  - Ermelenko, Y.
A1  - Mourzina, Y.
A1  - Schöning, Michael Josef
A1  - Iwasaki, H.
A1  - Vlasov, Y.
T1  - Multi-component analysis based on the light-addressable potentiometric sensor (LAPS)
JF  - Proceedings : 11th international conference Sensor 2003; 13 - 15 May 2003, Exhibition Centre Nuremberg, Germany
Y1  - 2003
N1  - Internationale Messe mit Kongress Sensor <11, 2003, Nürnberg>
SP  - 141
EP  - 144
PB  - AMA Service
CY  - Wunstorf
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
T1  - Silicon-based field-effect structures – From dielectrics to bioelectronics
JF  - Dielectrics in emerging technologies : proceedings of the international symposium ; [papers presented at the First International Symposium on Science and Technology of Dielectrics in Emerging Fields held from 27th April to 2nd May 2003 in Paris, France] / sponsoring divisions: Dielectric Science and Technology, Electronics. Ed.: D. Misra.
Y1  - 2003
SN  - 1-56677-346-6
N1  - International Symposium on Science and Technology of Dielectrics in Emerging Fields ; (1, 2003, Paris)
SP  - 31
EP  - 37
PB  - Electrochemical Society
CY  - Pennington, NJ
ER  - 
TY  - JOUR
A1  - Heinrichs, U.
A1  - Pietrzyk, U.
A1  - Ziemons, Karl
T1  - Design optimization of the PMT-ClearPET prototypes based on simulation studies with GEANT3
JF  - IEEE Transactions on Nuclear Science
N2  - Within the Crystal Clear Collaboration (CCC), four centers are developing second generation high performance small animal positron emission tomography (PET) scanners for different kinds of animals and medical applications. The first prototypes are photomultiplier tube (PMT)-based systems including depth of interaction (DOI) detection by using a phoswich layer of lutetium oxyorthosilicate (LSO) and lutetium yttrium aluminum perovskite (LuYAP). The aim of these simulation studies is to optimize sensitivity and spatial resolution of given designs, which vary in fields of view (FOVs) caused by different detector configurations (ring/octagon) and sizes. For this purpose the simulation tool GEANT3 (CERN, Geneva, Switzerland) was used.
Y1  - 2003
SN  - 0018-9499
VL  - 50
IS  - 5
SP  - 1428
EP  - 1432
ER  -