TY  - JOUR
A1  - Streun, M.
A1  - Brandenburg, G.
A1  - Larue, H.
A1  - Zimmermann, E.
A1  - Ziemons, Karl
A1  - Halling, H.
T1  - Pulse recording by free-running sampling
JF  - IEEE Transactions on Nuclear Science
N2  - Pulses from a position-sensitive photomultiplier (PS-PMT) are recorded by free-running ADCs at a sampling rate of 40 MHz. A four-channel acquisition board has been developed which is equipped with four 12-bit ADCs connected to one field programmable gate array (FPGA). The FPGA manages data acquisition and the transfer to the host computer. It can also work as a digital trigger, so a separate hardware trigger can be omitted. The method of free-running sampling provides a maximum of information, besides the pulse charge and amplitude also pulse shape and starting time are contained in the sampled data. This information is crucial for many tasks such as distinguishing between different scintillator materials, determination of radiation type, pile-up recovery, coincidence detection or time-of-flight applications. The absence of an analog integrator allows very high count rates to be dealt with. Since this method is to be employed in positron emission tomography (PET), the position of an event is also important. The simultaneous readout of four channels allows localization by means of center-of-gravity weighting. First results from a test setup with LSO scintillators coupled to the PS-PMT are presented here
Y1  - 2001
SN  - 0018-9499
VL  - 48
IS  - 3
SP  - 524
EP  - 526
ER  - 
TY  - JOUR
A1  - Stock, J.
A1  - Malindretos, J.
A1  - Indlekofer, K.M.
A1  - Pöttgens, Michael
A1  - Förster, Arnold
A1  - Lüth, Hans
T1  - A Vertical Resonant Tunneling Transistor for Application in Digital Logic Circuits
JF  - IEEE Transactions on Electron Devices (T-ED). 48 (2001), H. 6
Y1  - 2001
SN  - 0018-9383
SP  - 1028
EP  - 1032
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Cyclic plastic deformation tests to verify FEM-based shakedown analyses
N2  - Fatigue analyses are conducted with the aim of verifying that thermal ratcheting is limited. To this end it is important to make a clear distintion between the shakedown range and the ratcheting range (continuing deformation). As part of an EU-supported research project, experiments were carried out using a 4-bar model. The experiment comprised a water-cooled internal tube, and three insulated heatable outer test bars. The system was subjected to alternating axial forces, superimposed with alternating temperatures at the outer bars. The test parameters were partly selected on the basis of previous shakedown analyses. During the test, temperatures and strains were measured as a function of time. The loads and the resulting stresses were confirmed on an ongoing basis during performance of the test, and after it. Different material models were applied for this incremental elasto-plastic analysis using the ANSYS program. The results of the simulation are used to verify the FEM-based shakedown analysis.
KW  - Materialermüdung
KW  - Einspielen <Werkstoff>
KW  - Materialermüdung
KW  - shakedown analyses
KW  - thermal ratcheting
KW  - fatigue analyses
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - LISA - a European project for FEM-based limit and shakedown analysis
N2  - The load-carrying capacity or the safety against plastic limit states are the central questions in the design of structures and passive components in the apparatus engineering. A precise answer is most simply given by limit and shakedown analysis. These methods can be based on static and kinematic theorems for lower and upper bound analysis. Both may be formulated as optimization problems for finite element discretizations of structures. The problems of large-scale analysis and the extension towards realistic material modelling will be solved in a European research project. Limit and shakedown analyses are briefly demonstrated with illustrative examples.
KW  - Einspielen <Werkstoff>
KW  - Traglast
KW  - Finite-Elemente-Methode
KW  - Traglastanalyse
KW  - Einspielanalyse
KW  - FEM
KW  - limit analysis
KW  - shakedown analysis
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Simonis, A.
A1  - Krings, T.
A1  - Lüth, H.
A1  - Wang, J.
A1  - Schöning, Michael Josef
T1  - A „hybrid“ thin-film pH sensor with integrated thick-film reference
JF  - Sensors. 1 (2001), H. 6
Y1  - 2001
SN  - 1424-8220
SP  - 183
EP  - 192
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Andrei, Paula I.
T1  - p-Hydroxyphenylacetate decarboxylase from Clostridium difficile. A novel glycyl radical enzyme catalysing the formation of p-cresol
JF  - European Journal of Biochemistry. 268 (2001), H. 5
Y1  - 2001
SN  - 0014-2956
SP  - 1363
EP  - 1372
ER  - 
TY  - JOUR
A1  - Schütz, S.
A1  - Weißbecker, G.
A1  - Schroth, P.
A1  - Schöning, Michael Josef
T1  - Linkage of inanimate structures to biological systems – smart materials in biological micro- nanosystems
JF  - Smart materials : proceedings of the 1st Caesarium, Bonn, November 17 - 19, 1999 / Karl-Heinz Hoffmann ed.
Y1  - 2001
SN  - 3-540-67957-X
SP  - 149
EP  - 157
PB  - Springer
CY  - Berlin [u.a.]
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Schubert, Joachim P.
A1  - Kloock, Joachim P.
A1  - Zander, W.
A1  - Mourzina, Y. G.
A1  - Legin, A.
A1  - Vlasov, Y. G.
A1  - Lüth, H.
T1  - Innovative thin film techniques for microfabricating electrochemical sensors
JF  - Biocybernetics and Biomedical Engineering. 21 (2001), H. 4
Y1  - 2001
SN  - 0208-5216
SP  - 107
EP  - 119
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Schroth, Peter
A1  - Lüth, Hans
A1  - Hummel, Hans E.
A1  - Schütz, Stefan
T1  - Insect chemoreceptors coupled to silicon transistors as innovative biosensors
JF  - Proceedings of SPIE. 4205 (2001)
Y1  - 2001
SP  - 152
EP  - 162
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Schroth, P.
A1  - Hummel, Hans E.
A1  - Weißbecker, B.
A1  - Lüth, H.
A1  - Schütz, S.
T1  - Microcsaled living bioelectronic systems – Coupling beetles to silicon transducers
JF  - Chemical and biological sensors and analytical methods : proceedings of the international symposium / Sensor, Physical Electrochemistry, and Organic and Biological Electrochemistry Divisions. Ed.: M. Butler
Y1  - 2001
SN  - 1-56677-351-2
N1  - International Symposium: Chemical and Biological Sensors and Analytical Methods ; (2 : 2001.)
SP  - 165
EP  - 173
PB  - Electrochemical Society
CY  - Pennington, NJ
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Poghossian, Arshak
A1  - Yoshinobu, Tatsuo
A1  - Lüth, Hans
T1  - Semiconductor-based field-effect structures for chemical sensing
Y1  - 2001
SP  - 188
EP  - 198
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Mourzina, Yu.G.
A1  - Schubert, J.
A1  - Zander, W.
A1  - Legin, A.
A1  - Vlasov, Y. G.
A1  - Lüth, H.
T1  - Pulsed laser deposition – an innovative technique for preparing inorganic thin films
JF  - Electroanalysis. 13 (2001), H. 8-9
Y1  - 2001
SN  - 1040-0397
SP  - 727
EP  - 732
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Mourzina, Y. G.
A1  - Schubert, J.
A1  - Zander, W.
A1  - Legin, A.
A1  - Vlasov, Y. G.
A1  - Lüth, H.
T1  - Can pulsed laser deposition serve as an advanced technique in fabricating chemical sensors?
JF  - Sensors and Actuators B. 78 (2001), H. 1-3
Y1  - 2001
SN  - 0925-4005
N1  - Selected Papers form Eurosensors XIV
SP  - 273
EP  - 278
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Lüth, H.
T1  - Novel concepts for silicon-based biosensors
JF  - Physica Status Solidi (A) (2001)
Y1  - 2001
SN  - 0031-8965
SP  - 65
EP  - 77
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Hüllenkremer, B.
A1  - Glück, O.
A1  - Lüth, H.
A1  - Emons, H.
T1  - Voltohmmetry – a novel sensing principle for heavy metal determination in aqueous solutions
JF  - Sensors and Actuators B. 78 (2001), H. 1-3
Y1  - 2001
SN  - 0925-4005
SP  - 275
EP  - 280
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
T1  - Microelectronics contacts (bio-)chemistry – Semiconductor-based sensors
JF  - Biologi Italiani. 8 (2001)
Y1  - 2001
SN  - 0392-2510
SP  - 5
EP  - 10
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Silva, Maria Eugênia Vieira da
A1  - Faber, Christian
A1  - Müller, Christoph
T1  - Solar thermal desalination system with heat recovery
JF  - Desalination. 137 (2001), H. 1-3
Y1  - 2001
SN  - 0011-9164
SP  - 23
EP  - 29
ER  - 
TY  - JOUR
A1  - Schubert, J.
A1  - Schöning, Michael Josef
A1  - Mourzina, Y. G.
A1  - Legin, A. V.
A1  - Vlasov, Y. G.
A1  - Zander, W.
A1  - Lüth, H.
T1  - Multicomponent thin films for electrochemical sensor applications prepared by pulsed laser deposition
JF  - Sensors and Actuators B. 76 (2001), H. 1-3
Y1  - 2001
SN  - 0925-4005
SP  - 327
EP  - 330
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Wrona, Konrad
A1  - Zavagli, Guido
T1  - Mobile Payments - State of the Art and Open Problems / Wrona, Konrad ; Schuba, Marko ; Zavagli, Guido
JF  - Electronic commerce : second international workshop ; proceedings / WELCOM 2001, Heidelberg, Germany, November 16-17, 2001. Ludger Fiege ... (ed.)
Y1  - 2001
SN  - 978-3-540-42878-7
N1  - Lecture Notes in Computer Science ; 2232
SP  - 88
EP  - 100
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Wrona, Konrad
T1  - Security for Mobile Commerce Applications / Schuba, Marko ; Wrona, Konrad
Y1  - 2001
N1  - Multimedia, Internet, Video Technologies 2001 (MIV 2001), Malta, September 1-6, 2001 ; WSEAS Conference ; World Scientific and Engineering Academy and Society
SP  - 1
EP  - 8
ER  -