TY - JOUR A1 - Huck, Christina A1 - Poghossian, Arshak A1 - Bäcker, Matthias A1 - Reisert, Steffen A1 - Schubert, J. A1 - Zander, W. A1 - Begoyan, V. K. A1 - Buniatyan, V. V. A1 - Schöning, Michael Josef T1 - Chemical sensors based on a high-k perovskite oxide of barium strontium titanate JF - Procedia Engineering N2 - High-k perovskite oxide of barium strontium titanate (BST) represents a very attractive multi-functional transducer material for the development of (bio-)chemical sensors for liquids. In this work, BST films have been applied as a sensitive transducer material for a label-free detection of adsorbed charged macromolecules (positively charged polyelectrolytes) and concentration of hydrogen peroxide vapor as well as protection insulator layer for a contactless electrolyte-conductivity sensor. The experimental results of characterization of individual sensors are presented. Special emphasis is devoted towards the development of a capacitively-coupled contactless electrolyte-conductivity sensor. KW - barium strontium titanate KW - high-k material KW - contactless conductivity sensor KW - multi-functional material KW - hydrogen peroxide Y1 - 2014 U6 - https://doi.org/10.1016/j.proeng.2014.11.258 SN - 1877-7058 N1 - EUROSENSORS 2014 ; European Conference on Solid-State Transducers <28, 2014> VL - 87 SP - 28 EP - 31 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Huck, Christina A1 - Poghossian, Arshak A1 - Bäcker, Matthias A1 - Reisert, Steffen A1 - Kramer, Friederike A1 - Begoyan, Vardges K. A1 - Buniatyan, Vahe V. A1 - Schöning, Michael Josef T1 - Multi-parameter sensing using high-k oxide of barium strontium titanate JF - Physica status solidi (a) N2 - High-k perovskite oxide of barium strontium titanate (BST) represents a very attractive multi-functional transducer material for the development of (bio-)chemical sensors. In this work, a Si-based sensor chip containing Pt interdigitated electrodes covered with a thin BST layer (485 nm) has been developed for multi-parameter chemical sensing. The chip has been applied for the contactless measurement of the electrolyte conductivity, the detection of adsorbed charged macromolecules (positively charged polyelectrolytes of polyethylenimine) and the concentration of hydrogen peroxide (H2O2) vapor. The experimental results of functional testing of individual sensors are presented. The mechanism of the BST sensitivity to charged polyelectrolytes and H2O2 vapor has been proposed and discussed. Y1 - 2015 U6 - https://doi.org/10.1002/pssa.201431911 SN - 1862-6319 VL - 212 IS - 6 SP - 1259 PB - Wiley CY - Weinheim ER - TY - JOUR A1 - Huck, Christina A1 - Poghossian, Arshak A1 - Bäcker, Matthias A1 - Chaudhuri, S. A1 - Zander, W. A1 - Schubert, J. A1 - Begoyan, V. K. A1 - Buniatyan, V. V. A1 - Wagner, P. A1 - Schöning, Michael Josef T1 - Capacitively coupled electrolyte-conductivity sensor based on high-k material of barium strontium titanate JF - Sensors and actuators. B: Chemical Y1 - 2014 U6 - https://doi.org/10.1016/j.snb.2014.02.103 SN - 1873-3077 (E-Journal); 0925-4005 (Print) IS - 198 SP - 102 EP - 109 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Huck, Christina A1 - Jolly, Christina A1 - Wagner, Patrick A1 - Poghossian, Arshak A1 - Schöning, Michael Josef T1 - One-chip integrated dual amperometric/field-effect sensor for the detection of dissolved hydrogen JF - Procedia Engineering. 25 (2011) Y1 - 2011 SN - 1877-7058 N1 - EurosensorsXXV ; Proc. Eurosensors XXV, September 4-7, 2011, Athens, Greece SP - 1161 EP - 1164 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Huber, M. A1 - Streblow, R. A1 - Müller, D. A1 - Lange, S. A1 - Joneleit, R. A1 - Sefker, T. A1 - Rau, Sebastian A1 - Wollert, Jörg T1 - Funksignalübertragung in Luftleitungen JF - HLH : Lüftung, Klima, Heizung, Sanitär, Gebäudetechnik Y1 - 2014 SN - 1436-5103 VL - Bd. 65 IS - H. 7/8 SP - 36 EP - 40 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - White, D.H. A1 - Hoff, R. W. T1 - Nuclear structure of 241Pu from neutron-capture, (d,p)-, and (d,t)-reaction measurements / D. H. White ; R. W. Hoff ... F. Hoyler ... JF - Physical review / C. 57 (1998), H. 3 Y1 - 1998 SN - 0556-2813 SP - 1112 EP - 1133 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Shi, Z. R. A1 - Schreckenback, K. A1 - Aprahamian, A. T1 - Complete spectroscopy and the 162Dy nucleus / Z. R. Shi ; K. Schreckenbach ; A. Aprahamian ... F. Hoyler ... JF - AIP conference proceedings (1999) Y1 - 1999 SN - 0094-243X N1 - American Institute of Physics conference proceedings SP - 237 EP - 238 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Prokofjevs, P. A1 - Bondarenko, V. T1 - Study of nuclear structure of 164Dy in (n, gamma) and(n, n' gamma) reactions / P. Prokofjevs ; V. Bondarenko ; F. Hoyler ... Y1 - 1997 SN - 1122-1437 N1 - Conference proceedings - Italian Physical Society SP - 759 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Petkov, P. A1 - Andrejtscheff, W. T1 - Absolute E0, E1 and E2 transition rates in even-even nuclei obtained in thermal neutron capture / P. Petkov ; W. Andrejtscheff ... F. Hoyler ... JF - Journal of Physics G. 14 (1988), H. S Y1 - 1988 SN - 0305-4616 SP - S97 EP - S102 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Mohr, P. A1 - Staudt, G. T1 - Alpha-cluster states of 212po in a realistic potential model JF - Physical review / C. 50 (1994), H. 5 Y1 - 1994 SN - 0556-2813 SP - 2631 EP - 2634 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Kessler, E. G. A1 - Greene, G. L. T1 - High accuracy, absolute wavelength determination of capture gamma-ray energies for E≤5 MeV and the direct determination of binding energies in light nuclei / E.G. Kessler ; G. L. Greene ... F. Hoyler JF - Journal of Physics G. 14 (1988), H. S Y1 - 1988 SN - 0305-4616 SP - S167 EP - S174 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Hoff, R. W. A1 - Börner, H. G. T1 - Nuclear structure of 170Tm from neutron-capture and (d,p)-reaction measurements / R. W. Hoff ; H. G. Börner ... F. Hoyler ... JF - Physical review / C. 54 (1996), H. 1 Y1 - 1996 SN - 0556-2813 SP - 78 EP - 116 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Hamada, S. A. A1 - Hamilton, W. D. T1 - Gamma-gamma directional correlation measurements in 84Kr following thermal neutron capture by natural krypton / S. A. Hamada ; W. D. Hamilton ; F. Hoyler JF - Journal of physics / G. 13 (1987), H. 9 Y1 - 1987 SN - 0305-4616 SP - 1143 EP - 1163 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Drissi, S. A1 - Tercier, P. A. T1 - The 112Cd laboratory - An extension : EO strengths, multiphonon states and coupled vibrations / S. Drissi ; P. A. Tercier ... F. Hoyler ... JF - Nuclear physics / A. 614 (1997), H. 2 Y1 - 1997 SN - 0375-9474 SP - 137 EP - 182 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Corminboeuf, F. A1 - Jolie, J. T1 - Kp=4+ double-gvibration in 164Dy / F. Corminboeuf ; J. Jolie ... F. Hoyler ... JF - Physical review / C. 56 (1997), H. 3 Y1 - 1997 SN - 0556-2813 SP - R1201 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Colvin, G. G. A1 - Robinson, S. J. T1 - 100Ru studied by thermal neutron capture / G. G. Colvin ; S. J. Robinson ; F. Hoyler JF - Journal of Physics G. 14 (1988), H. 11 Y1 - 1988 SN - 0305-4616 SP - 1411 EP - 1421 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Colvin, G. G. A1 - Robinson, S. J. T1 - E0 transitions in 106Pd studied by neutron capture / G. G. Colvin ; F. Hoyler ; S. J. Robinson JF - Journal of physics / G. 13 (1987), H. 2 Y1 - 1987 SN - 0305-4616 SP - 191 EP - 204 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Collins, S. P. A1 - Eid, S. A. T1 - A search for mixed-symmetry states in the mass A approximately 50 region / S. P. Collins ; S. A. Eid ... F. Hoyler JF - Journal of Physics G. 15 (1989), H. 3 Y1 - 1989 SN - 0954-3899 SP - 321 EP - 332 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Cizewski, J. A. A1 - Colvin, G. G. T1 - Neutron capture on 193Ir and σ<σ SUB>max states in 195Ir / J. A. Cizewski ; G. G. Colvin ... F. Hoyler ... JF - Journal of Physics G. 14 (1988), H. S Y1 - 1988 SN - 0305-4616 SP - S103 EP - S108 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Cata-Danil, G. A1 - Guazzoni, P. T1 - (p,t) transition strengths for nuclei around Z = 50 and the IBA model / G. Cata-Danil ; P. Guazzoni ... F. Hoyler ... JF - Journal of physics / G. 22 (1996), H. 1 Y1 - 1996 SN - 0305-4616 SP - 107 EP - 114 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Börner, H. G. A1 - Robinson, S. T1 - Recent developments at the ILL (n,γ)-facility JF - Journal of Physics G. 14 (1988), H. S Y1 - 1988 SN - 0305-4616 SP - S161 EP - S165 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Bauske, I. A1 - Arias, J. M. T1 - First observation of scissors mode states in an odd-mass nucleus / I. Bauske ; J. M. Arias ... F. Hoyler ... JF - Physical review letters. 71 (1993), H. 7 Y1 - 1993 SN - 0031-9007 SP - 975 EP - 978 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Balodis, M. A1 - Prokofjevs, P. T1 - Level scheme of 194Ir / M. Balodis ; P. Prokofjevs ... F. Hoyler ... JF - Nuclear physics / A. 641 (1998), H. 2 Y1 - 1998 SN - 0375-9474 SP - 133 EP - 187 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Aprahamian, A. A1 - Wu, X. A1 - Lesher, S. R. T1 - Complete spectroscopy of the 162Dy nucleus / Aprahamian, A. ; Wu, X. ; Lesher, S. R. ; Warner, D. D. ; Gelletly, W. ; Börner, H. G. ; Hoyler, F. ; Schreckenbach, K. ; Carsten R. F. ; Shi, Z. R. ; Kusnezov, D. ; Ibrahim, M. ; Macchiavelli, A. O. ; Brinkman JF - Nuclear physics / A. 764 (2006) Y1 - 2006 SN - 0375-9474 SP - 42 EP - 78 ER - TY - JOUR A1 - Hoyler, Friedrich A1 - Andrejtscheff, W. A1 - Petkov, P. T1 - A mixed symmetry or quasineutron pair interpretation of the Kpi =03+ level in 172Yb / W. Andrejtscheff ; P. Petkov ... F. Hoyler JF - Journal of physics / G. 12 (1986), H. 6 Y1 - 1986 SN - 0305-4616 SP - L151 EP - L156 ER - TY - JOUR A1 - Hoyler, Friedrich T1 - Microscopic and semimicroscopic analysis of the reaction 27al- (p,#ga)24mg in the energy range between 20 and 45 mev JF - Physical review / C, nuclear physics. 31 (1985), H. 1 Y1 - 1985 SN - 0556-2813 SP - 17 ER - TY - JOUR A1 - Hough, Lindsay B. A1 - Nalwalk, Julia W. A1 - Ding, Xinxin A1 - Scheer, Nico T1 - Opioid Analgesia in P450 Gene Cluster Knockout Mice: A Search for Analgesia-Relevant Isoforms JF - Drug Metabolism and Disposition Y1 - 2015 U6 - https://doi.org/10.1124/dmd.115.065490 SN - 1521-009x VL - 43 IS - 9 SP - 1326 EP - 1330 ER - TY - JOUR A1 - Hoskens, R.C.P. A1 - Roer, T.G. van de A1 - Tolstikhin, V.I. A1 - Förster, Arnold T1 - Hot electron injection laser: vertically integrated transistor-laser structure for high-speed, low-chirp direct modulation JF - LEOS 2000 : 2000 IEEE annual meeting conference proceedings; 13th annual meeting; IEEE Lasers and Electro-Optics Society 2000 annual meeting; 13-16 November 2000, The Westin Rio Mar Beach, Rio Grande, Puerto Rico. Vol. 2 Y1 - 2000 SN - 0-7803-5947-X N1 - 2000 IEEE LEOS annual meeting SP - 444 EP - 445 PB - IEEE Service Center CY - Piscataway, NJ ER - TY - JOUR A1 - Hoskens, R. C. P. A1 - Tolstikhin, V.I. A1 - Förster, Arnold A1 - Roer, T.G. van de T1 - Vertically integrated transistor-laser structure, take 2 JF - WOCSDICE 2000, 24th Workshop on Compound Semiconductor Devices and Integrated Circuits held in Europe : May 29 - June 02, 2000, Aegean Sea, Greece. Y1 - 2000 SN - 0970311109 N1 - WOCSDICE ; (24, 2000) Workshop on Compound Semiconductor Devices and Integrated Circuits held in Europe ; (24 : ; 2000.05.29-06.02) PB - Univ. of Michigan CY - Ann Arbor, Mich. ER - TY - JOUR A1 - Horstmann, Marie-Therese A1 - Bialonski, Stephan A1 - Noenning, Nina A1 - Mai, Heinke A1 - Prusseit, Jens A1 - Wellmer, Jörg A1 - Hinrichs, Hermann A1 - Lehnertz, Klaus T1 - State dependent properties of epileptic brain networks: Comparative graph–theoretical analyses of simultaneously recorded EEG and MEG JF - Clinical Neurophysiology N2 - Objective To investigate whether functional brain networks of epilepsy patients treated with antiepileptic medication differ from networks of healthy controls even during the seizure-free interval. Methods We applied different rules to construct binary and weighted networks from EEG and MEG data recorded under a resting-state eyes-open and eyes-closed condition from 21 epilepsy patients and 23 healthy controls. The average shortest path length and the clustering coefficient served as global statistical network characteristics. Results Independent on the behavioral condition, epileptic brains exhibited a more regular functional network structure. Similarly, the eyes-closed condition was characterized by a more regular functional network structure in both groups. The amount of network reorganization due to behavioral state changes was similar in both groups. Consistent findings could be achieved for networks derived from EEG but hardly from MEG recordings, and network construction rules had a rather strong impact on our findings. Conclusions Despite the locality of the investigated processes epileptic brain networks differ in their global characteristics from non-epileptic brain networks. Further methodological developments are necessary to improve the characterization of disturbed and normal functional networks. Significance An increased regularity and a diminished modulation capability appear characteristic of epileptic brain networks. Y1 - 2010 U6 - https://doi.org/10.1016/j.clinph.2009.10.013 SN - 1388-2457 VL - 121 IS - 2 SP - 172 EP - 185 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Horbach, Andreas A1 - Staat, Manfred A1 - Perez-Viana, Daniel A1 - Simmen, Hans-Peter A1 - Neuhaus, Valentin A1 - Pape, Hans-Christoph A1 - Prescher, Andreas A1 - Ciritsis, Bernhard T1 - Biomechanical in vitro examination of a standardized low-volume tubular femoroplasty JF - Clinical Biomechanics N2 - Background Osteoporosis is associated with the risk of fractures near the hip. Age and comorbidities increase the perioperative risk. Due to the ageing population, fracture of the proximal femur also proves to be a socio-economic problem. Preventive surgical measures have hardly been used so far. Methods 10 pairs of human femora from fresh cadavers were divided into control and low-volume femoroplasty groups and subjected to a Hayes fall-loading fracture test. The results of the respective localization and classification of the fracture site, the Singh index determined by computed tomography (CT) examination and the parameters in terms of fracture force, work to fracture and stiffness were evaluated statistically and with the finite element method. In addition, a finite element parametric study with different position angles and variants of the tubular geometry of the femoroplasty was performed. Findings Compared to the control group, the work to fracture could be increased by 33.2%. The fracture force increased by 19.9%. The used technique and instrumentation proved to be standardized and reproducible with an average poly(methyl methacrylate) volume of 10.5 ml. The parametric study showed the best results for the selected angle and geometry. Interpretation The cadaver studies demonstrated the biomechanical efficacy of the low-volume tubular femoroplasty. The numerical calculations confirmed the optimal choice of positioning as well as the inner and outer diameter of the tube in this setting. The standardized minimally invasive technique with the instruments developed for it could be used in further comparative studies to confirm the measured biomechanical results. Y1 - 2020 U6 - https://doi.org/10.1016/j.clinbiomech.2020.105104 VL - 80 IS - Art. 105104 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Horbach, Andreas A1 - Staat, Manfred T1 - Optical strain measurement for the modeling of surgical meshes and their porosity JF - Current Directions in Biomedical Engineering N2 - The porosity of surgical meshes makes them flexible for large elastic deformation and establishes the healing conditions of good tissue in growth. The biomechanic modeling of orthotropic and compressible materials requires new materials models and simulstaneoaus fit of deformation in the load direction as well as trannsversely to to load. This nonlinear modeling can be achieved by an optical deformation measurement. At the same time the full field deformation measurement allows the dermination of the change of porosity with deformation. Also the socalled effective porosity, which has been defined to asses the tisssue interatcion with the mesh implants, can be determined from the global deformation of the surgical meshes. Y1 - 2018 U6 - https://doi.org/10.1515/cdbme-2018-0045 SN - 2364-5504 VL - Band 4 IS - 1 SP - 181 EP - 184 PB - De Gruyter CY - Berlin ER - TY - JOUR A1 - Horbach, Andreas A1 - Duong, Minh Tuan A1 - Staat, Manfred T1 - Modelling of compressible and orthotropic surgical mesh implants based on optical deformation measurement JF - Journal of the mechanical behavior of biomedical materials Y1 - 2017 U6 - https://doi.org/10.1016/j.jmbbm.2017.06.012 SN - 1751-6161 VL - 74 SP - 400 EP - 410 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Honarvarfard, Elham A1 - Gamella, Maria A1 - Poghossian, Arshak A1 - Schöning, Michael Josef A1 - Katz, Evgeny T1 - An enzyme-based reversible Controlled NOT (CNOT) logic gate operating on a semiconductor transducer JF - Applied Materials Today N2 - An enzyme-based biocatalytic system mimicking operation of a logically reversible Controlled NOT (CNOT) gate has been interfaced with semiconductor electronic transducers. Electrolyte–insulator–semiconductor (EIS) structures have been used to transduce chemical changes produced by the enzyme system to an electronically readable capacitive output signal using field-effect features of the EIS device. Two enzymes, urease and esterase, were immobilized on the insulating interface of EIS structure producing local pH changes performing XOR logic operation controlled by various combinations of the input signals represented by urea and ethyl butyrate. Another EIS transducer was functionalized with esterase only, thus performing Identity (ID) logic operation for the ethyl butyrate input. Both semiconductor devices assembled in parallel operated as a logically reversible CNOT gate. The present system, despite its simplicity, demonstrated for the first time logically reversible function of the enzyme system transduced electronically with the semiconductor devices. The biomolecular realization of a CNOT gate interfaced with semiconductors is promising for integration into complex biomolecular networks and future biosensor/biomedical applications. KW - Electrolyte–insulator–semiconductor KW - Capacitive field-effect KW - CNOT KW - XOR KW - Enzyme logic gate Y1 - 2017 U6 - https://doi.org/10.1016/j.apmt.2017.08.003 SN - 2352-9407 VL - 9 SP - 266 EP - 270 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Honarvarfard, Elham A1 - Gamella, Maria A1 - Channaveerappa, Devika A1 - Darie, Costel C. A1 - Poghossian, Arshak A1 - Schöning, Michael Josef A1 - Katz, Evgeny T1 - Electrochemically Stimulated Insulin Release from a Modified Graphene–functionalized Carbon Fiber Electrode JF - Electroanalysis N2 - A graphene-functionalized carbon fiber electrode was modified with adsorbed polyethylenimine to introduce amino functionalities and then with trigonelline and 4-carboxyphenylboronic acid covalently bound to the amino groups. The trigonelline species containing quarterized pyridine groups produced positive charge on the electrode surface regardless of the pH value, while the phenylboronic acid species were neutral below pH 8 and negatively charged above pH 9 (note that their pKa=8.4). The total charge on the monolayer-modified electrode was positive at the neutral pH and negative at pH > 9. Note that 4-carboxyphenylboronic acid was attached to the electrode surface in molar excess to trigonelline, thus allowing the negative charge to dominate on the electrode surface at basic pH. Negatively charged fluorescent dye-labeled insulin (insulin-FITC) was loaded on the modified electrode surface at pH 7.0 due to its electrostatic attraction to the positively charged interface. The local pH in close vicinity to the electrode surface was increased to ca. 9–10 due to consumption of H+ ions upon electrochemical reduction of oxygen proceeding at the potential of −1.0 V (vs. Ag/AgCl) applied on the modified electrode. The process resulted in recharging of the electrode surface to the negative value due to the formation of the negative charge on the phenylboronic acid groups, thus resulting in the electrostatic repulsion of insulin-FITC and stimulating its release from the electrode surface. The insulin release was characterized by fluorescence spectroscopy (using the FITC-labeled insulin), by electrochemical measurements on an iridium oxide, IrOx, electrode and by mass spectrometry. The graphene-functionalized carbon fiber electrode demonstrated significant advantages in the signal-stimulated insulin release comparing with the carbon fiber electrode without the graphene species. Y1 - 2017 U6 - https://doi.org/10.1002/elan.201700095 SN - 1521-4109 VL - 29 IS - 6 SP - 1543 EP - 1553 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Holtschoppen, Britta A1 - Butenweg, Christoph A1 - Meskouris, Konstantin T1 - Seismic design of non-structural components in industrial facilities JF - International journal of engineering under uncertainty Y1 - 2009 SN - 0975-4806 VL - Volume 1 SP - 1 EP - 13 ER - TY - JOUR A1 - Holtschoppen, B. A1 - Butenweg, Christoph A1 - Meskouris, Konstantin T1 - Erdbebensichere Auslegung von Industrieanlagen JF - Der Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik Y1 - 2009 SN - 0005-6650 IS - März SP - S9 EP - S14 PB - VDI Fachmedien CY - Düsseldorf ER - TY - JOUR A1 - Holtrup, S. A1 - Sadeghfam, Arash A1 - Heuermann, Holger A1 - Awakowicz, P. T1 - Characterization and optimization technique for microwave-driven high-intensity discharge lamps using hot S-parameters JF - IEEE transactions on microwave theories and techniques N2 - High-intensity discharge lamps can be driven by radio-frequency signals in the ISM frequency band at 2.45 GHz, using a matching network to transform the impedance of the plasma to the source impedance. To achieve an optimal operating condition, a good characterization of the lamp in terms of radio frequency equivalent circuits under operating conditions is necessary, enabling the design of an efficient matching network. This paper presents the characterization technique for such lamps and presents the design of the required matching network. For the characterization, a high-intensity discharge lamp was driven by a monofrequent large signal at 2.45 GHz, whereas a frequency sweep over 300 MHz was performed across this signal to measure so-called small-signal hot S-parameters using a vector network analyzer. These parameters are then used as an equivalent load in a circuit simulator to design an appropriate matching network. Using the measured data as a black-box model in the simulation results in a quick and efficient method to simulate and design efficient matching networks in spite of the complex plasma behavior. Furthermore, photometric analysis of high-intensity discharge lamps are carried out, comparing microwave operation to conventional operation. Y1 - 2014 U6 - https://doi.org/10.1109/TMTT.2014.2342652 SN - 0018-9480 VL - 62 IS - 10 SP - 2471 EP - 2480 PB - IEEE CY - New York ER - TY - JOUR A1 - Holthaus-Sellheier, Ursula A1 - Hasselmann, Willi T1 - Die Bedeutung der Baukosten für Wirtschaftlichkeitsbetrachtungen und die Projektentwicklung / Hasselmann, Willi ; Holthaus Ursula JF - Kosten im Hochbau : Praxis-Handbuch und Kommentar zur DIN 276 ; mit 23 Tabellen / Autoren: Bert Bielefeld ... Hrsg.: Udo Blecken ... Y1 - 2007 SN - 978-3-481-02245-7 SP - 125 EP - 157 PB - Müller CY - Köln ER - TY - JOUR A1 - Holthaus-Sellheier, Ursula A1 - Boenert, Lothar T1 - Alternative Brandschutzkonstruktionen führen zu Kostenreduzierungen / Boenert, Lothar ; Holthaus, Ursula JF - Trockenbau, Akustik : Magazin für Planung und Ausführung (2003) Y1 - 2003 SN - 0179-8006 SP - 30 EP - 33 ER - TY - JOUR A1 - Holthaus-Sellheier, Ursula A1 - Blecken, Udo A1 - Meinen, Heiko T1 - Vergabeentscheidung und Wirtschaftlichkeitsberechnung von PPP/PFI-Projekten in der Bauwirtschaft / Udo Blecken, Heiko Meinen, Ursula Holthaus JF - Bautechnik: Zeitschrift für den gesamten Ingenieurbau. 81 (2004), H. 8 Y1 - 2004 SN - 1437-0999 N1 - ISSN 0932-8351 (print) SP - 648 EP - 657 ER - TY - JOUR A1 - Holthaus-Sellheier, Ursula A1 - Blecken, Udo A1 - Gralla, Mike T1 - PPP-Projekte: Strukturelle Kostenvergleichsuntersuchungen zwischen Eigenrealisierung der öffentlichen Auftraggeber und PPP-Anbietern / Blecken, Udo ; Gralla, Mike ; Holthaus, Ursula JF - Bautechnik. 84 (2007), H. 1 Y1 - 2007 SN - 0932-8351 SP - 25 EP - 34 ER - TY - JOUR A1 - Holthaus-Sellheier, Ursula A1 - Blecken, Udo T1 - Marktdatenbasiertes Ertragsprognosemodell für die Projektentwicklung / Blecken, Udo; Holthaus, Ursula JF - Baubetrieb und Bauwirtschaft - Festschrift Prof. Gert Stadler Y1 - 2004 SN - 3-902465-09-3 SP - 251 EP - 269 PB - Verlag der TU Graz CY - Graz ER - TY - JOUR A1 - Holthaus-Sellheier, Ursula A1 - Blecken, Udo T1 - Nutzenkosten: DIN 18960-2008 - Leistungsfähige Grundlage für die zielorientierte Planung der Lebenszykluskosten / Blecken, Udo ; Holthaus-Sellheier, Ursula JF - Bautechnik. 85 (2008), H. 7 Y1 - 2008 SN - 1437-0999 SP - 464 EP - 471 ER - TY - JOUR A1 - Holthaus-Sellheier, Ursula T1 - Senkung der Baukosten und Reduzierung der Preisunsicherheit mit Hilfe der Risikoabwicklung über die Optionspreistheorie mit Realoptionen JF - Risikomanagement in der Bauwirtschaft : Tagungsband / Baubetriebs- und Bauwirtschaftssymposium 02. April 2004. [Hrsg.: Technische Universität Graz, Institut für Baubetrieb und Bauwirtschaft. Red.: Reinhild Nöstlthaller ... ] Y1 - 2004 SN - 3-901351-91-4 N1 - Baubetriebs- und Bauwirtschaftssymposium <2, 2004, Graz> SP - 103 EP - 114 PB - Verl. der Techn. Univ. CY - Graz ER - TY - JOUR A1 - Holler, S. A1 - Butenweg, Christoph A1 - Noh, S.-Y. A1 - Meskouris, Konstantin T1 - Computational model of textile-reinforced concrete structures JF - Computers & structures : an international journal Y1 - 2004 U6 - https://doi.org/10.1016/j.compstruc.2004.03.076 SN - 1879-2243 (E-Journal); 0045-7949 (Print) VL - Volume 82 IS - Issues 23-26 SP - 1971 EP - 1979 ER - TY - JOUR A1 - Hofmann, Till A1 - Limpert, Nicolas A1 - Mataré, Victor A1 - Schönitz, Sebastian A1 - Niemueller, Tim A1 - Ferrein, Alexander A1 - Lakemeyer, Gerhard T1 - The Carologistics RoboCup Logistics Team 2018 N2 - The Carologistics team participates in the RoboCup Logistics League for the seventh year. The RCLL requires precise vision, manipulation and path planning, as well as complex high-level decision making and multi-robot coordination. We outline our approach with an emphasis on recent modifications to those components. The team members in 2018 are David Bosen, Christoph Gollok, Mostafa Gomaa, Daniel Habering, Till Hofmann, Nicolas Limpert, Sebastian Schönitz, Morian Sonnet, Carsten Stoffels, and Tarik Viehmann. This paper is based on the last year’s team description. Y1 - 2018 ER - TY - JOUR A1 - Hoffstadt, Kevin A1 - Pohen, Gino D. A1 - Dicke, Max D. A1 - Paulsen, Svea A1 - Krafft, Simone A1 - Zang, Joachim W. A1 - Fonseca-Zang, Warde A. da A1 - Leite, Athaydes A1 - Kuperjans, Isabel T1 - Challenges and prospects of biogas from energy cane as supplement to bioethanol production JF - Agronomy N2 - Innovative breeds of sugar cane yield up to 2.5 times as much organic matter as conventional breeds, resulting in a great potential for biogas production. The use of biogas production as a complementary solution to conventional and second-generation ethanol production in Brazil may increase the energy produced per hectare in the sugarcane sector. Herein, it was demonstrated that through ensiling, energy cane can be conserved for six months; the stored cane can then be fed into a continuous biogas process. This approach is necessary to achieve year-round biogas production at an industrial scale. Batch tests revealed specific biogas potentials between 400 and 600 LN/kgVS for both the ensiled and non-ensiled energy cane, and the specific biogas potential of a continuous biogas process fed with ensiled energy cane was in the same range. Peak biogas losses through ensiling of up to 27% after six months were observed. Finally, compared with second-generation ethanol production using energy cane, the results indicated that biogas production from energy cane may lead to higher energy yields per hectare, with an average energy yield of up to 162 MWh/ha. Finally, the Farm²CBG concept is introduced, showing an approach for decentralized biogas production. Y1 - 2020 U6 - https://doi.org/10.3390/agronomy10060821 SN - 2073-4395 VL - 10 IS - 6 PB - MDPI CY - Basel ER - TY - JOUR A1 - Hoffstadt, Kevin A1 - Nikolausz, Marcell A1 - Krafft, Simone A1 - Bonatelli, Maria A1 - Kumar, Vivekanantha A1 - Harms, Hauke A1 - Kuperjans, Isabel T1 - Optimization of the ex situ biomethanation of hydrogen and carbon dioxide in a novel meandering plug flow reactor: start-up phase and flexible operation JF - Bioengineering KW - methanation KW - plug flow reactor KW - bubble column KW - biomethane KW - P2G Y1 - 2024 U6 - https://doi.org/10.3390/bioengineering11020165 SN - 2306-5354 VL - 11 IS - 2 PB - MDPI CY - Basel ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Téllez, Félix M. A1 - Valverde, Antonio A1 - Fernandez, Valerio A1 - Fernandez, Jesus T1 - Performance evaluation of the 200-kWth HiTRec-II open volumetric air receiver JF - Journal of solar energy engineering Y1 - 2003 VL - Vol. 125 IS - Iss. 1 SP - 87 EP - 94 ER -