TY  - JOUR
A1  - Selmer, Thorsten
A1  - Figura, Kurt von
A1  - Schmidt, Bernhard
A1  - Dierks, T.
T1  - A novel protein modification generating an aldehyde group in sulfatases: its role in catalysis and disease / Figura, Kurt von ; Schmidt, Bernhard ; Selmer, Thorsten ; Dierks, Thomas
JF  - Bioessays. 20 (1998), H. 6
Y1  - 1998
SN  - 1521-1878
SP  - 505
EP  - 510
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Lukatela, G.
A1  - Krauss, N.
A1  - Theis, K.
T1  - Crystal structure of human arylsulfatase A: the aldehyde function and the metal ion at the active site suggest a novel mechanism for sulfate ester hydrolysis / Lukatela, G. ; Krauss, N. ; Theis, K. ; Selmer, T. ; Gieselmann, V. ; Figura, K. von ; Saenger,
JF  - Biochemistry. 37 (1998), H. 11
Y1  - 1998
SP  - 3654
EP  - 3664
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Reichl, Peter
T1  - On large-scale reliable multicast protocols / Schuba, M. ; Reichl, P.
JF  - 6th IEE Conference on Telecommunications
Y1  - 1998
SN  - 0-85296-700-4
N1  - Conf. Publ. No. 451
SP  - 133
EP  - 137
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Reichl, Peter
T1  - An Analysis of Retransmission Strategies for Reliable Multicast Protocols / Schuba, M. ; Reichl, P.
JF  - Performance of information and communication systems : IFIP TC 6,WG 6.3 Seventh International Conference on Performance of Information and Communication Systems (PICS '98), 25 - 28 May, Lund, Sweden / ed. by Ulf Körner ...
Y1  - 1998
SN  - 0-412-83730-7
SP  - 1
EP  - 12
PB  - Chapman  Hall
CY  - London
ER  - 
TY  - JOUR
A1  - Schuba, Marko
T1  - SRMT-a scalable and reliable multicast transport protocol
JF  - IEEE International Conference on Communications, 1998. ICC 98. Vol. 1
Y1  - 1998
SN  - 0-7803-4788-9
SP  - 612
EP  - 616
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Schneider, Gaby
A1  - Haverkort, Boudewijn R.
T1  - QNA-MC: A Performance Evaluation Tool for Communication Networks with Multicast Data Streams / Schneider, G. ; Schuba, M. ; Haverkort, B. R.
JF  - Computer Performance Evaluation - Modelling Techniques and Tools / Puigjaner, Ramon (eds.)
Y1  - 1998
SN  - 3-540-64949-2
N1  - Lecture notes in computer  science ; 1469
SP  - 105
EP  - 116
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Reichl, Peter
A1  - Kesdogan, Dogan
A1  - Junghärtchen, Klaus
T1  - Simulative Performance Evaluation of the Temporary Pseudonym Method for Protecting Location Information in GSM Networks / Reichl, P. ; Kesdogan, D. ; Junghärtchen, K. ; Schuba, M.
JF  - Computer Performance Evaluation - Modelling Techniques and Tools / Puigjaner, Ramon (eds.)
Y1  - 1998
SN  - 3-540-64949-2
N1  - Lecture notes in computer  science ; 1469
SP  - 105
EP  - 116
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Engels, Elmar
A1  - Doege, E.
T1  - Optimizing the number of strokes for punching machines using a fuzzy controlled electrohydraulic damping system / Doege, E. ; Engels, E.
JF  - ICME 98, CIRP International Seminar on Intelligent Computation in Manufacturing Engineering, Proceedings, Capri, IT, Jul 1-3, 1998
Y1  - 1998
SP  - 471
EP  - 478
CY  - Capri
ER  - 
TY  - JOUR
A1  - Kallweit, Stephan
A1  - Uchiyama, R.
A1  - Siekmann, H.
T1  - Fault Diagnostic Method for Pump Running Conditions Based on Process Modeling and Neural Network / Uchiyama, R. ; Kallweit, S. ; Siekmann, H.
JF  - International Journal of Rotating Machinery. 4 (1998), H. 1
Y1  - 1998
SN  - 1542-3034
SP  - 49
EP  - 59
ER  - 
TY  - JOUR
A1  - Meliß, Michael
A1  - Neskakis, A.
A1  - Plettner-Marliani, J.
A1  - Lange, C.
A1  - Hövelmann, A.
A1  - Schumacher, J.
T1  - Waste water recycling supplied by renewable energies : basic conditions and possible treatment technologies
JF  - Renewable energy. Vol. 14 (1998), iss. 1-4. 6th Arab International Solar Energy Conference: Bringing Solar Energy into the Daylight, Muscat, Sultanate of Oman, 29.03.-01.04.1998
Y1  - 1998
SN  - 1879-0682 (E-Book); 0960-1481 (Print)
SP  - 325
EP  - 331
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kordos, P.
A1  - Marso, M.
A1  - Rüders, F.
T1  - 550 GHz bandwidth photodetector on low-temperature grown molecular-beam epitaxial GaAs.  Kordos, P., Förster, A.; Marso, M.; Rüders, F.
JF  - Electronics Letters. 34 (1998), H. 1
Y1  - 1998
SN  - 1350-911X
SP  - 119
EP  - 120
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hartmann, A.
A1  - Dieker, Ch.
A1  - Hollfelder, M.
T1  - Spontaneous formation of tilted AlGaAS/GaAs superlattice during AlGaAs growth. Hartmann, A.; Dieker, Ch.; Hollfelder, M.; Hardtdegen, H.; Förster, A.; Lüth, H.
JF  - Applied Surface Science. 123-124 (1998)
Y1  - 1998
SN  - 0169-4332
N1  - = Proceedings of the Sixth International Conference on the Formation of Semiconductor Interfaces
SP  - 704
EP  - 709
ER  - 
TY  - JOUR
A1  - Temiz Artmann, Aysegül
A1  - Ates, H.
A1  - Üretmen, Ö.
A1  - Andac, K.
T1  - Erythrocyte deformability in high-tension and normal tension glaucoma. Ates, H.; Üretmen, Ö.; Temiz, A.; Andac, K.
JF  - International Ophthalmology. 22 (1998), H. 1
Y1  - 1998
SN  - 0165-5701
SP  - 7
EP  - 12
ER  - 
TY  - JOUR
A1  - Temiz Artmann, Aysegül
A1  - Baskurt, O. K.
A1  - Meiselman, H. J.
T1  - Effect of superoxide anions on red blood cell rheologic properties. Baskurt, O. K.; Temiz, A.; Meiselman, H. J.
JF  - Free Radical Biology and Medicine. 24 (1998), H. 1
Y1  - 1998
SN  - 0891-5849
SP  - 102
EP  - 110
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Morvic, M.
A1  - Betko, J.
T1  - On the hopping and band conductivity in molecular-beam epitaxial low-temperature grown GaAs / M. Morvic ; J. Betko ; J. Novák ... A. Förster
JF  - Physica status solidi / B, Basic research. 205 (1998), H. 1
Y1  - 1998
SN  - 1521-3951
SP  - 125
EP  - 128
ER  - 
TY  - JOUR
A1  - Biselli, Manfred
A1  - Klyushnichenko, Vadim
A1  - Rodenbrock, Anja
A1  - Thömmes, Jörg
T1  - Analysis of Hybridoma Cell Culture Processes by SDS-Gel Capillary Electrophoresis and matrix-assisted laser desorption ionization–time-of-flight MS / Vadim Klyushnichenko, Anja Rodenbrock, Jörg Thömmes, Maria-Regina Kula, Holger Heine, Manfred Biselli
JF  - Biotechnology and Applied Biochemistry. 27 (1998), H. 3
Y1  - 1998
SN  - 0885-4513
SP  - 181
EP  - 188
ER  - 
TY  - JOUR
A1  - Biselli, Manfred
A1  - Noll, T.
T1  - Dielectric spectroscopy in the cultivation of suspended and immobilized hybridoma cells / Noll, T.; Biselli, M.
JF  - Journal of Biotechnology. 63 (1998), H. 3
Y1  - 1998
SN  - 0168-1656
SP  - 187
EP  - 198
ER  - 
TY  - JOUR
A1  - Scherer, Ulrich W.
A1  - Hör, G.
A1  - Kranert, W. T.
A1  - Maul, F. D.
T1  - Gated Metabolic Positron Emission Tomography (GAPET) of Myocardium: 18F-FDG/PET to optimize Recognition of Myocardial Hibernation / G. Hör, W.T. Kranert, F.D. Maul, O. Schröder,  A. Karimian-Tatriz, O. Geb, R.P. Baum, U.W.  Scherer
JF  - Nuclear Medicine Communications. 19 (1998)
Y1  - 1998
SN  - 0143-3636
SP  - 535
EP  - 545
ER  - 
TY  - JOUR
A1  - Kleines, H.
A1  - Ziemons, Karl
A1  - Zwoll, K.
T1  - Experiences with ATM in a multivendor pilot system at Forschungszentrum Jülich
JF  - IEEE Transactions on Nuclear Science
N2  - The ATM technology for high speed serial transmission provides a new quality of communication by introducing novel features in a LAN environment, especially support of real time communication, of both LAN and WAN communication and of multimedia streams. In order to evaluate ATM for future DAQ systems and remote control systems as well as for a high speed picture archiving and communications system for medical images, Forschungszentrum Julich has build up a pilot system for the evaluation of ATM and standard low cost multimedia systems. It is a heterogeneous multivendor system containing a variety of switches and desktop solutions, employing different protocol options of ATM. The tests conducted in the pilot system revealed major difficulties regarding stability, interoperability and performance. The paper presents motivations, layout and results of the pilot system. Discussion of results concentrates on performance issues relevant for realistic applications, e.g., connection to a RAID system via NFS over ATM
Y1  - 1998
SN  - 0018-9499
VL  - 45
IS  - 4
SP  - 1867
EP  - 1871
ER  - 
TY  - JOUR
A1  - Weckesser, Martin
A1  - Grießmeier, Martin
A1  - Schmidt, Daniela
A1  - Sonnenberg, Frank
A1  - Ziemons, Karl
A1  - Kemna, Lars
A1  - Holschbach, Marcus
A1  - Langen, Karl-J.
A1  - Müller-Gärtner, Hans-W.
T1  - Iodine-123 α-methyl tyrosine single-photon emission tomography of cerebral gliomas: standardised evaluation of tumour uptake and extent
JF  - European Journal of Nuclear Medicine
N2  - Single-photon emission tomography (SPET) with the amino acid analogue l-3-[123I]iodo-α-methyl tyrosine (IMT) is helpful in the diagnosis and monitoring of cerebral gliomas. Radiolabelled amino acids seem to reflect tumour infiltration more specifically than conventional methods like magnetic resonance imaging and computed tomography. Automatic tumour delineation based on maximal tumour uptake may cause an overestimation of mean tumour uptake and an underestimation of tumour extension in tumours with circumscribed peaks. The aim of this study was to develop a program for tumour delineation and calculation of mean tumour uptake which takes into account the mean background activity and is thus optimised to the problem of tumour definition in IMT SPET. Using the frequency distribution of pixel intensities of the tomograms a program was developed which automatically detects a reference brain region and draws an isocontour region around the tumour taking into account mean brain radioactivity. Tumour area and tumour/brain ratios were calculated. A three-compartment phantom was simulated to test the program. The program was applied to IMT SPET studies of 20 patients with cerebral gliomas and was compared to the results of manual analysis by three different investigators. Activity ratios and chamber extension of the phantom were correctly calculated by the automatic analysis. A method based on image maxima alone failed to determine chamber extension correctly. Manual region of interest analysis in patient studies resulted in a mean inter-observer standard deviation of 8.7%±6.1% (range 2.7%–25.0%). The mean value of the results of the manual analysis showed a significant correlation to the results of the automatic analysis (r = 0.91, P<0.0001 for the uptake ratio; r = 0.87, P<0.0001 for the tumour area). We conclude that the algorithm proposed simplifies the calculation of uptake ratios and may be used for observer-independent evaluation of IMT SPET studies. Three-dimensional tumour recognition and transfer to co-registered morphological images based on this program may be useful for the planning of surgical and radiation treatment.
Y1  - 1998
SN  - 1619-7089
VL  - 25
IS  - 2
SP  - 150
EP  - 156
ER  -