TY  - JOUR
A1  - Zientz, Evelyn
A1  - Bongaerts, Johannes
A1  - Unden, Gottfried
T1  - Fumarate regulation of gene expression in Escherichia coli by the DcuSR (dcuSR genes) two-component regulatory system
JF  - Journal of bacteriology
Y1  - 1998
SN  - 1098-5530 (E-Journal); 0021-9193 (Print)
VL  - Vol. 180
IS  - No. 20
SP  - 5421
EP  - 5425
ER  - 
TY  - JOUR
A1  - Wolf, Martin
A1  - Simon, S.
A1  - Schlick, Christopher
T1  - Qualitative and Quantitative Analysis of Cooperation / Wolf, M. ; Simon, S. ; Schlick, C.
JF  - Proceedings : May 26 - 29, 1998, Cannes (France) = Actes : 26 - 29 mai 1998 / INRIA, Institut National de Recherche en Informatique et en Automatique, Unité de recherche ... F. Darses ..., eds
Y1  - 1998
N1  - COOP ; Institut National de Recherche en Informatique et en Automatique ; Centre ; (Sophia Antipolis) ; International Conference on the Design of Cooperative Systems ; (3 ; 1998.05.26-29 ; Cannes) ; Conference Internationale sur la Conception de Systèmes Coopératifs ; (3 ; 1998.05.26-29 ; Cannes) ; COOP ; (3 ; 1998.05.26-29 ; Cannes)
SP  - 1
EP  - 5
PB  - -
CY  - Cannes
ER  - 
TY  - JOUR
A1  - Wittmann, Klaus
A1  - Kell, G.
A1  - Winkler, F.
A1  - Günther, M. (u.a.)
T1  - High resolution temperature measurement technique for materials sciences experiments in space
JF  - Acta Astronautica. 43 (1998), H. 7-8
Y1  - 1998
SN  - 0094-5765
SP  - 385
EP  - 395
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  - 
TY  - JOUR
A1  - Thust, M.
A1  - Schroth, P.
A1  - Töpler, A.
A1  - Schöning, Michael Josef
A1  - Müller-Veggian, Mattea
A1  - Kordos, P.
A1  - Lüth, H.
T1  - Improving the detection limit of a capacitive sensor by means of a diffusion barrier
JF  - Eurosensors XII : proceedings of the 12th European Conference on Solid-State Transducers and the 9th UK Conference on Sensors and their Applications, Southampton, UK, 13 - 16 September 1998 / ed. by N. M. White ; Vol. 1
Y1  - 1998
SN  - 0-7503-0595-9
N1  - Eurosensors ; (12, 1998, Southampton) ; UK Conference on Sensors and Their Applications ; (9, 1998, Southampton)
SP  - 507
EP  - 510
PB  - Inst. of Physics Publ.
CY  - Bristol [u.a.]
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  - 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  - Stulpe, Werner
A1  - Ruch, Ernst
T1  - Proof of the Mixing Theorem for Statistical Systems in Classical Physics. Ruch, Ernst; Stulpe, Werner
JF  - Acta Applicandae Mathematicae. 53 (1998), H. 3
Y1  - 1998
SN  - 1572-9036
SP  - 329
EP  - 352
ER  - 
TY  - JOUR
A1  - Stulpe, Werner
A1  - Bugajski, S.
A1  - Hellwig, K.-E.
T1  - On Fuzzy Random Variables and Statistical Maps. Bugajski, S.; Hellwig, K.-E.; Stulpe, W.
JF  - Reports on Mathematical Physics. 41 (1998), H. 1
Y1  - 1998
SN  - 0034-4877
SP  - 1
EP  - 11
ER  - 
TY  - JOUR
A1  - Stulpe, Werner
T1  - On the Representation of Quantum Mechanics on a Classical Sample Space
JF  - International Journal of Theoretical Physics. 37 (1998), H. 1
Y1  - 1998
SN  - 1572-9575
SP  - 349
EP  - 356
ER  - 
TY  - JOUR
A1  - Siepmann, Thomas
A1  - Schuh, G.
A1  - Levering, V.
T1  - PROPLAN / Schuh, G.; Siepmann, Th.; Levering, V.
JF  - Handbook on architectures of information systems : with 24 tables / Peter Bernus ... (ed.)
Y1  - 1998
SN  - 3-540-64453-9
N1  - International handbooks on information systems ; 1
PB  - Springer
CY  - Berlin [u.a.]
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Recksiek, Michael
A1  - Dierks, Thomas
A1  - Schmidt, Bernhard
T1  - Sulfatases, Trapping of the Sulfated Enzyme Intermediate by Substituting the Active Site Formylglycine / Recksiek, Michael ; Selmer, Thorsten ; Dierks, Thomas ; Schmidt, Bernhard ; Figura, Kurt von
JF  - Journal of Biological Chemistry. 273 (1998), H. 11
Y1  - 1998
SN  - 1083-351X
SP  - 6096
EP  - 6103
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Miech, Claudia
A1  - Dierks, Thomas
A1  - Figura, Kurt von
T1  - Arylsulfatase from Klebsiella pneumoniae Carries a Formylglycine Generated from a Serine / Miech, Claudia ; Dierks, Thomas ; Selmer, Thorsten ; Figura, Kurt von ; Schmidt, Bernd
JF  - Journal of Biological Chemistry. 273 (1998), H. 9
Y1  - 1998
SN  - 1083-351X
SP  - 4835
EP  - 4837
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  - 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  - Seibler, Jost
A1  - Schübeler, Dirk
A1  - Fiering, Steven
A1  - Groudine, Mark
A1  - Bode, Jürgen
T1  - DNA cassette exchange in ES cells mediated by Flp recombinase: an efficient strategy for repeated modification of tagged loci by marker-free constructs
JF  - Biochemistry
Y1  - 1998
U6  - http://dx.doi.org/10.1021/bi980288t
SN  - 1520-4995
VL  - 37
IS  - 18
SP  - 6229
EP  - 6234
ER  - 
TY  - JOUR
A1  - Schütz, S.
A1  - Schöning, Michael Josef
A1  - Schroth, P.
A1  - Weißbecker, B.
A1  - Kordos, P.
A1  - Lüth, H.
A1  - Hummel, Hans E.
T1  - An insectbased BioFET as a bioelectronic nose
JF  - Proceedings of the Seventh International Meeting on Chemical Sensors : 27 - 30 July, 1998, Beijing, P. R. China / ed. Zhi-Gang Zhou
Y1  - 1998
N1  - International Meeting on Chemical Sensors ; (7, 1998, Beijing) ; International Meeting on Chemical Sensors (IMCS) ; (7 : ; 1998.07.27-30 : ; Beijing)
SP  - 314
EP  - 316
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Thust, M.
A1  - Müller-Veggian, Mattea
A1  - Kordos, P.
T1  - A novel silicon-based sensor array with capacitive EIS structures
JF  - Sensors and Actuators B. 47 (1998), H. 1-3
Y1  - 1998
SN  - 0925-4005
SP  - 225
EP  - 230
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Schütz, S.
A1  - Schroth, P.
A1  - Weißbecker, B.
A1  - Steffen, A.
A1  - Kordos, P.
A1  - Hummel, Hans E.
T1  - A BioFET on the basis of intact insect antennae
JF  - Sensors and Actuators B. 47 (1998), H. 1-3
Y1  - 1998
SN  - 0925-4005
SP  - 235
EP  - 238
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Malkoc, Ü.
A1  - Thust, M.
A1  - Steffen, A.
A1  - Kordos, P.
A1  - Lüth, H.
T1  - Novel electrochemical sensors with structured and porous semiconductor/insulator capacitors
JF  - Proceedings of the Seventh International Meeting on Chemical Sensors : 27 - 30 July, 1998, Beijing, P. R. China / ed. Zhi-Gang Zhou
Y1  - 1998
N1  - International Meeting on Chemical Sensors ; (7, 1998, Beijing) ; International Meeting on Chemical Sensors (IMCS) ; (7 : ; 1998.07.27-30 : ; Beijing)
SP  - 885
EP  - 887
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  -