TY  - CHAP
A1  - Mirmohseni, Abdolreza
A1  - Rostamizadeh, Kobra
T1  - Quartz crystal nanobalance in conjunction with principal component analysis for  identification of volatile organic compounds
N2  - Quartz crystal nanobalance (QCN) sensors are considered as powerful masssensitive sensors to determine materials in the sub-nanogram level. In this study, a single piezoelectric quartz crystal nanobalance modified with polystyrene was employed to detect benzene, toluene, ethylbenzene and xylene (BTEX compounds). The frequency shift of the QCN sensor was found to be linear against the BTEX compound concentrations in the range about 1-45 mg l-1. The correlation coefficients for benzene, toluene, ethylbenzene, and xylene were 0.991, 0.9977, 0.9946 and 0.9971, respectively. The principal component analysis was also utilized to process the frequency response data of the single piezoelectric crystal at different times, considering to the different adsorption-desorption dynamics of BTEX compounds. Using principal component analysis, it was found that over 90% of the data variance could still be explained by use of two principal components (PC1 and PC2). Subsequently, the successful identification of benzene and toluene was possible through the principal component analysis of the transient responses of the polystyrene modified QCN sensor. The results showed that the polystyrene-modified QCN had favorable identification and quantification performances for the BTEX compounds.
KW  - Biosensor
KW  - Quartz crystal nanobalance (QCN)
KW  - BTEX compounds
KW  - principal component
Y1  - 2006
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:a96-opus-1434
ER  - 
TY  - JOUR
A1  - Stulpe, Werner
A1  - Swat, Maciej
T1  - Quantum States as Probability Measures
JF  - Foundations of Physics Letters. 14 (2001), H. 3
Y1  - 2001
SN  - 1572-9524
SP  - 285
EP  - 293
ER  - 
TY  - BOOK
A1  - Grotendorst, Johannes
T1  - Quantum Simulations of Complex Many-Body Systems: From Theory to Algorithms, Audio-Visual Lecture Notes / Grotendorst, Johannes [Ed.]
Y1  - 2002
SN  - 3-00-010000-8
N1  - NIC series ; 14
PB  - NIC
CY  - Jülich
ER  - 
TY  - BOOK
A1  - Grotendorst, Johannes
T1  - Quantum simulations of complex many-body systems: from theory to algorithms : winter school, 25 February - 1 March 2002, Rolduc Conference Centre, Kerkrade, the Netherlands ; poster presentations / ed. by Johannes Grotendorst
Y1  - 2002
SN  - 3-00-009058-4
N1  - NIC series ; 11 ; Winter school ; (2002.02.25-03.01 : ; Kerkrade)
PB  - NIC
CY  - Jülich
ER  - 
TY  - BOOK
A1  - Grotendorst, Johannes
T1  - Quantum simulations of complex many body systems/<1>
Y1  - 2002
SN  - 3-00-009057-6
N1  - NIC series ; 10 ; John-von-Neumann-Institut für Computing <Jülich>
PB  - Forschungszentrum Jülich
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Schäfer, Horst
A1  - Shao, H.
A1  - Gerschütz, J.
A1  - Scholl, S. (u.a.)
T1  - Quantum Interference Effects in Highly Doped n-ZnSe Epitaxy Layers Grown by MBE
JF  - physica status solidi (b). 206 (1998), H. 2
Y1  - 1998
SN  - 0370-1972
SP  - 575
EP  - 582
ER  - 
TY  - JOUR
A1  - Schäfer, Horst
A1  - Scholl, S.
A1  - Gerschütz, F.
A1  - Fischer, A.
T1  - Quantum Hall Effect in CdTe/Cd 1-X MgX Te Heterostructures
JF  - Solid State Communications. 94 (1995), H. 11
Y1  - 1995
SN  - 0038-1098
SP  - 935
EP  - 938
ER  - 
TY  - JOUR
A1  - Schäfer, Horst
A1  - Shao, Hua
A1  - Scholl, W.
A1  - Hommel, D. (u.a.)
T1  - Quantum Corrections to Magnetotransport in n-ZnSe Grown by MBE
Y1  - 1995
N1  - Als Poster vorgelegt auf der Frühjahrstagung der DPG in Berlin, 20.-24. März 1995, Verhandl. DPG (VI) 30, HL 28.76 / Physikalisches Institut der Universität Würzburg.
ER  - 
TY  - JOUR
A1  - Dantism, Shahriar
A1  - Röhlen, Desiree
A1  - Selmer, Thorsten
A1  - Wagner, Torsten
A1  - Wagner, Patrick
A1  - Schöning, Michael Josef
T1  - Quantitative differential monitoring of the metabolic activity of Corynebacterium glutamicum cultures utilizing a light-addressable potentiometric sensor system
JF  - Biosensors and Bioelectronics
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.bios.2019.111332
VL  - 139
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Iomdina, Elena N.
A1  - Kiseleva, Anna A.
A1  - Kotliar, Konstantin
A1  - Luzhnov, Petr V.
T1  - Quantification of Choroidal Blood Flow Using the OCT-A System Based on Voxel Scan Processing
T2  - 2020 International Conference on Biomedical Innovations and Applications (BIA)
Y1  - 2020
SN  - 978-1-7281-7073-2
U6  - http://dx.doi.org/10.1109/BIA50171.2020.9244511
SP  - 41
EP  - 44
ER  - 
TY  - JOUR
A1  - Schäfer, Horst
A1  - Gerschütz, J.
A1  - Scholl, S.
A1  - Fischer, A. (u.a.)
T1  - Quanten-Hall-Effekt in CdTe/Cd1-X MgX Te Heterostrukturen
Y1  - 1995
N1  - Als Poster vorgelegt auf der Frühjahrstagung der DPG in Berlin, 20.-24. März 1995, Verhandl. DPG (VI) 30, HL 33.52 / Physikalisches Institut der Universität Würzburg.
ER  - 
TY  - JOUR
A1  - Kloock, Joachim P.
A1  - Mourzina, Y.
A1  - Schubert, J.
A1  - Ermelenko, Y.
A1  - Schöning, Michael Josef
T1  - Pulsed laser deposition: A tool for fabricating thin-film microsensors
JF  - Biomedizinische Technik. 49 (2004), H. 2
Y1  - 2004
SN  - 0932-4666
SP  - 1032
EP  - 1033
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  - Schaub, A.
A1  - Zundel, A.
A1  - Beckers, L.
A1  - Schubert, J.
A1  - Zander, W.
A1  - Kordos, P.
A1  - Lüth, H.
T1  - Pulsed laser deposition as a novel thin film preparation method for silicon-based field effect sensors
JF  - Proceedings of the 25th European Solid State Device Research Conference : the Netherlands Congress Centre, The Hague, the Netherlands, 25th - 27th September 1995 / ESSDERC '95. Ed. by H. C. de Graaff
Y1  - 1995
SN  - 2-86332-182-X
N1  - ESSDERC ; (25, 1995, 's-Gravenhage) ; European Solid State Device Research Conference (ESSDERC) ; (25 : ; 1995.09.25-27 : ; Den Haag)
SP  - 601
EP  - 604
PB  - Ed. Frontières
CY  - Gif-sur-Yvette
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Schubert, Jürgen
A1  - Zander, Willy
A1  - Müller-Veggian, Mattea
T1  - Pulsed laser deposition as a novel preparation technique for chemical microsensors
JF  - Proceedings of SPIE 3857, Chemical Microsenors and Applications II, 124 (November 18, 1999). 3857 (1999)
Y1  - 1999
SP  - 124
EP  - 134
ER  - 
TY  - JOUR
A1  - Kotliar, Konstantin
A1  - Baumann, Marcus
A1  - Vilser, Walthard
A1  - Lanzl, Ines M.
T1  - Pulse wave velocity in retinal arteries of healthy volunteers
JF  - British Journal of Ophthalmology (eBJO)
Y1  - 2011
SN  - 1468-2079
VL  - 95
IS  - 11
SP  - 675
EP  - 679
PB  - BMJ Publ. Group
CY  - London
ER  - 
TY  - JOUR
A1  - Streun, M.
A1  - Brandenburg, G.
A1  - Larue, H.
A1  - Saleh, H.
A1  - Zimmermann, E.
A1  - Ziemons, Karl
A1  - Halling, H.
T1  - Pulse shape discrimination of LSO and LuYAP scintillators for depth of interaction detection in PET
JF  - 2002 IEEE Nuclear Science Symposium Conference Record, Vol. 3
N2  - A feasible way to gain the depth of interaction information in a PET scanner is the use of phoswich detectors. In general the layer of interaction is identified front the pulse shape of the corresponding scintillator material. In this work pulses from LSO and LuYAP crystals were investigated in order to find a practical method of distinguishing. It turned out that such a pulse processing could he kept simple due to an additional slow component in the light decay of the LuYAP pulse. At the same time the short decay time guarantees that the major amount of the light output is still collected within a short pulse recording time.
Y1  - 2003
SN  - 1082-3654
SP  - 1636
EP  - 1639
ER  - 
TY  - JOUR
A1  - Streun, M.
A1  - Brandenburg, G.
A1  - Larue, H.
A1  - Saleh, H.
A1  - Zimmermann, E.
A1  - Ziemons, Karl
A1  - Halling, H.
T1  - Pulse shape discrimination of LSO and LuYAP scintillators for depth of interaction detection in PET
JF  - IEEE Transactions on Nuclear Science
N2  - A feasible way to gain the depth of interaction information in a positron emission tomography scanner is the use of phoswich detectors. In general, the layer of interaction is identified from the pulse shape of the corresponding scintillator material. In this work, pulses from LSO and LuYAP crystals were investigated in order to find a practical method of distinguishing. It turned out that such a pulse processing could be kept simple because of an additional slow component in the light decay of the LuYAP pulse. At the same time, the short decay time guarantees that the major amount of the light output is still collected within a short pulse recording time.
Y1  - 2003
SN  - 0018-9499
VL  - 50
IS  - 3
SP  - 344
EP  - 347
ER  - 
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  - 2000 IEEE Nuclear Science Symposium Conference Record, Vol. 2
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 FPGA (field programmable gate array). 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. These informations are 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 coping with very high count rates. Since this method is going to be employed in positron emission tomography (PET), the position of an event is another important information. 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
Y1  - 2000
SN  - 1082-3654
SP  - 9/179
EP  - 9/181
ER  - 
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  -