Publikationen

Jahresberichte / Annual Reports (nur englisch)

Dissertationen können in der OPUS-Datenbank recherchiert werden:

Hochschulschriftenserver der Universität Stuttgart

Peer reviewed Publikationen ab 2020

2023

P. A. Molina Cabrera et al., “W-band tunable, multi-channel, frequency comb Doppler backscattering diagnostic in the ASDEX-Upgrade tokamak,” Review of Scientific Instruments, vol. 94, Art. no. 8, Aug. 2023, doi: 10.1063/5.0151271.

B. Plaum, “Estimation of the Effects of Spurious Modes in Linear Microwave Systems Using a Monte Carlo Algorithm,” IEEE Journal of Microwaves, vol. 3, Art. no. 3, Jul. 2023, doi: 10.1109/JMW.2023.3283152.

L. A. Holland, A. Köhn-Seemann, and R. G. L. Vann, “Parametric dependence of microwave beam broadening by plasma density turbulence,” Nuclear Fusion, May 2023, doi: 10.1088/1741-4326/acc25e.

A. Frank et al., “Impact of the turbulence wavenumber spectrum and probing beam geometry on Doppler reflectometry perpendicular velocity measurements,” Plasma Physics and Controlled Fusion, vol. 65, Art. no. 6, May 2023, doi: 10.1088/1361-6587/accd1a.

M. W. Brookman et al., “Broadening of microwave heating beams in the DIII-D tokamak by edge turbulence,” Nuclear Fusion, vol. 63, Art. no. 4, Mar. 2023, doi: 10.1088/1741-4326/acbb8e.

P. Reichle et al., “Volatile Lubricants Injected Through Laser Drilled Micro Holes Enable Efficiently Hydrocarbon-Free Lubrication for Deep Drawing Processes,” International Journal of Precision Engineering and Manufacturing-Green Technology, Feb. 2023, doi: 10.1007/s40684-023-00505-8.

BibTeX

@article{Reichle2023,
  abstract = {In order to reduce the use of classic lubricants such as synthetic or mineral oils, emulsions or waxes in the deep drawing process, a new tribological system based on volatile lubricants was investigated. In this system, a volatile medium is injected under high pressure through laser drilled micro holes directly into the contact zone between the tool and the sheet metal and serves as a temporary lubricant. In order to investigate this tribological system under realistic conditions, strip drawing experiments with different volatile lubricants (air, nitrogen, carbon dioxide and argon) were performed on galvanized sheets. Therefore, a new generation of strip drawing tools was designed and numerically calculated for low elastic deformations to ensure a uniform contact pressure distribution over the entire friction contact area. To obtain a homogeneous distribution of the volatile lubricants, a number of micro holes with a depth of several millimeters were drilled into the hardened strip drawing jaws using ultrashort pulsed laser radiation. Taking into account the capabilities of this laser drilling technique in terms of size and shape of the micro holes, computational fluid dynamics simulations were performed to predict the flow behavior of the lubricant within the micro hole as well as the contact zone and were compared with observable effects in outflow tests. The chemical composition of the acting tribological layers was characterized by means of X-ray photoelectron spectroscopy and their changes during the deep drawing process were correlated with the lubricants used as well as the measured wear and friction values.},
  author = {Reichle, Paul and Reichardt, Gerd and Henn, Manuel and Umlauf, Georg and Barz, Jakob and Riedmüller, Kim Rouven and Liewald, Mathias and Tovar, Günter E. M.},
  day = 15,
  doi = {10.1007/s40684-023-00505-8},
  issn = {2198-0810},
  journal = {International Journal of Precision Engineering and Manufacturing-Green Technology},
  month = {02},
  title = {Volatile Lubricants Injected Through Laser Drilled Micro Holes Enable Efficiently Hydrocarbon-Free Lubrication for Deep Drawing Processes},
  url = {https://doi.org/10.1007/s40684-023-00505-8},
  year = 2023
}

A. Oraby et al., “Fermentation and recovery of cellobiose lipids using foam fractionation,” Discover Chemical Engineering, vol. 3, Art. no. 1, Jan. 2023, doi: 10.1007/s43938-022-00015-0.

A. J. Coelho et al., “Validation of GBS plasma turbulence simulation of the TJ-K stellarator,” Plasma Phys. Control. Fusion, vol. 65, Art. no. 8, 2023, doi: 10.1088/1361-6587/ace4f3.

A. Köhn-Seemann, B. E. Eliasson, S. J. Freethy, L. A. Holland, and R. G. L. Vann, “Benchmarking full-wave codes for studying the O-SX mode conversion in MAST Upgrade,” in EPJ Web of Conferences, 2023, p. 1010. doi: 10.1051/epjconf/202327701010.

D. Wagner et al., “Single- and Two-Frequency Sub-THz Waveguide Notch Filters With Rejection Frequencies Within and Beyond the Passband,” IEEE Transactions on Microwave Theory and Techniques, vol. 71, Art. no. 6, 2023, doi: 10.1109/TMTT.2023.3234103.

T. Wilson et al., “Electron Bernstein Wave (EBW) Current Drive Profiles and Efficiency for STEP,” in EPJ Web of Conferences, E. Poli, Y. Liu, and V. Udintsev, Eds., 2023, p. 1011. doi: 10.1051/epjconf/202327701011.

S. Freethy et al., “Microwave Current Drive for STEP and MAST Upgrade,” in EPJ Web of Conferences, E. Poli, Y. Liu, and V. Udintsev, Eds., 2023, p. 4001. doi: 10.1051/epjconf/202327704001.

B. Plaum, M. Preynas, and M. Choe, “Calculations for the optical system for the first ITER plasma,” EPJ Web of Conferences, vol. 277, p. 1005, 2023, doi: 10.1051/epjconf/202327701005.

A. Hentrich, “Simulation and reflectivity measurements of the ITER first plasma beam dump material,” EPJ Web of Conferences, vol. 277, p. 2009, 2023, doi: 10.1051/epjconf/202327702009.

N. Müller, P. Manz, and M. Ramisch, “Nondiffusive particle transport in the stellarator experiment TJ-K,” Phys. Plasmas, vol. 30, Art. no. 9, 2023, doi: 10.1063/5.0156125.

D. Moseev et al., “Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X,” Journal of Instrumentation, 2023.

2022

K. Bosson, P. Marcasuzaa, A. Bousquet, G. E. M. Tovar, V. Atanasov, and L. Billon, “PentaFluoroStyrene-based block copolymers controlled self-assembly pattern: A platform paving the way to functional block copolymers,” European Polymer Journal, vol. 179, p. 111560, Oct. 2022, doi: 10.1016/j.eurpolymj.2022.111560.

A. Köhn-Seemann et al., “Plasma electron acceleration in a non-resonant microwave heating scheme below the electron cyclotron frequency,” New Journal of Physics, Jun. 2022, doi: 10.1088/1367-2630/ac747a.

A. Hentrich, V. M. Garcia, A. Killinger, B. Plaum, C. Lechte, and G. E. M. Tovar, “Resonant Atmospheric Plasma-Sprayed Ceramic Layers Effectively absorb Microwaves at 170 GHz,” Journal of Infrared, Millimeter, and Terahertz Waves, vol. 43, Art. no. 5–6, Jun. 2022, doi: 10.1007/S10762-022-00861-7.

A. Oraby, S. Rupp, and S. Zibek, “Techno-Economic Analysis as a Driver for Optimisation of Cellobiose Lipid Fermentation and Purification,” Frontiers in Bioengineering and Biotechnology, vol. 10, Jun. 2022, doi: 10.3389/fbioe.2022.913351.

A. Guarnieri et al., “Antimicrobial properties of chitosan from different developmental stages of the bioconverter insect Hermetia illucens,” Scientific Reports, vol. 12, Art. no. 1, May 2022, doi: 10.1038/s41598-022-12150-3.

BibTeX

@article{Guarnieri2022,
  abstract = {Growing antimicrobial resistance has prompted researchers to identify new natural molecules with antimicrobial potential. In this perspective, attention has been focused on biopolymers that could also be functional in the medical field. Chitin is the second most abundant biopolymer on Earth and with its deacetylated derivative, chitosan, has several applications in biomedical and pharmaceutical fields. Currently, the main source of chitin is the crustacean exoskeleton, but the growing demand for these polymers on the market has led to search for alternative sources. Among these, insects, and in particular the bioconverter Hermetia illucens, is one of the most bred. Chitin can be extracted from larvae, pupal exuviae and dead adults of H. illucens, by applying chemical methods, and converted into chitosan. Fourier-transformed infrared spectroscopy confirmed the identity of the chitosan produced from H. illucens and its structural similarity to commercial polymer. Recently, studies showed that chitosan has intrinsic antimicrobial activity. This is the first research that investigated the antibacterial activity of chitosan produced from the three developmental stages of  H. illucens through qualitative and quantitative analysis, agar diffusion tests and microdilution assays, respectively. Our results showed the antimicrobial capacity of chitosan of H. illucens, opening new perspectives for its use in the biological area.},
  author = {Guarnieri, Anna and Triunfo, Micaela and Scieuzo, Carmen and Ianniciello, Dolores and Tafi, Elena and Hahn, Thomas and Zibek, Susanne and Salvia, Rosanna and De Bonis, Angela and Falabella, Patrizia},
  day = 16,
  doi = {10.1038/s41598-022-12150-3},
  issn = {2045-2322},
  journal = {Scientific Reports},
  month = {05},
  number = 1,
  pages = 8084,
  title = {Antimicrobial properties of chitosan from different developmental stages of the bioconverter insect Hermetia illucens},
  url = {https://doi.org/10.1038/s41598-022-12150-3},
  volume = 12,
  year = 2022
}

A. Oraby, I. Weickardt, and S. Zibek, “Foam fractionation methods in aerobic fermentation processes,” Biotechnology and Bioengineering, vol. 119, Art. no. 7, Apr. 2022, doi: 10.1002/bit.28102.

T. Hahn et al., “Purification of Chitin from Pupal Exuviae of the Black Soldier Fly,” Waste and Biomass Valorization, vol. 13, Art. no. 4, Apr. 2022, doi: 10.1007/s12649-021-01645-1.

G. Reichardt et al., “Friction and Wear Behavior of Deep Drawing Tools Using Volatile Lubricants Injected Through Laser-Drilled Micro-Holes,” JOM, vol. 74, Art. no. 3, Mar. 2022, doi: 10.1007/s11837-021-05028-8.

D. Wagner et al., “Single- and Two-Frequency Sub-THz Notch Filters with Rejection Frequencies Within and Beyond the Pass Band,” IEEE Transactions on Microwave Theory and Techniques, 2022.

A. Beck, F. Vogt, L. Hägele, S. Rupp, and S. Zibek, Optimization and kinetic modeling of a fed-batch fermentation for mannosylerythritol lipids (MEL) production with moesziomyces aphidis. Universität Stuttgart, 2022. doi: 10.18419/OPUS-12230.

A.-K. Briem, L. Bippus, A. Oraby, P. Noll, S. Zibek, and S. Albrecht, “Environmental Impacts of Biosurfactants from a Life Cycle Perspective: A Systematic Literature Review,” in Advances in Biochemical Engineering/Biotechnology, Springer Berlin Heidelberg, 2022. doi: 10.1007/10_2021_194.

2021

F. Fanale et al., “Design validation of in-vessel mirrors and beam dump for first plasma operations in ITER,” Fusion Engineering and Design, vol. 172, p. 112717, Nov. 2021, doi: 10.1016/j.fusengdes.2021.112717.

J. Lips, S. Heuraux, C. Lechte, and B. Plaum, “On frequency-independent horn antenna design for plasma positioning reflectometers, from simulation to prototype testing,” Journal of Instrumentation, vol. 16, Art. no. 07, Jul. 2021, doi: 10.1088/1748-0221/16/07/P07040.

BibTeX

@article{Lips_2021,
  abstract = {Using a new framework for horn antenna optimization, a first frequency-independent horn antenna for a plasma positioning reflectometer (PPR) is designed. This hardware optimization is a new approach aiming on lowering the computational complexity of PPR interpretative models able to extract profiles and fluctuations of electron density and temperature from reflectometry measurements. PPR measurements are a strong candidate to provide real-time feedback for plasma position control in long-discharge fusion tokamaks such as ITER and DEMO, which requires fast interpretative models. Reducing the computational complexity of these models is therefore critical. In this paper, ray tracing simulations in the poloidal plane are used to compare different radiation patterns and evaluate them on multiple performance criteria. An antenna shape leading to a frequency-independent far-field radiation diagram is found with the PROFUSION optimizer and a prototype of this antenna is tested against an unoptimized conical reference antenna. The ray tracing performance criteria indicate that fundamental Gaussian frequency-independent antennas perform well, albeit in general worse than same-sized frequency-dependent antennas. Furthermore, it is seen that the pyramidal ITER gap 6 antenna performs well given the spatial constraints and that more performant antennas could be used, when more space was available. The prototype testing reveals challenges in obtaining frequency-independent characteristics within a tokamak blanket environment, which is additionally complicated by misalignment risks.},
  author = {Lips, J. and Heuraux, S. and Lechte, C. and Plaum, B.},
  doi = {10.1088/1748-0221/16/07/P07040},
  journal = {Journal of Instrumentation},
  month = {07},
  number = 07,
  pages = {P07040},
  publisher = {IOP Publishing},
  title = {On frequency-independent horn antenna design for plasma positioning reflectometers, from simulation to prototype testing},
  url = {https://dx.doi.org/10.1088/1748-0221/16/07/P07040},
  volume = 16,
  year = 2021
}

A. Beck et al., “Novel mannosylerythritol lipid biosurfactant structures from castor oil revealed by advanced structure analysis,” Journal of Industrial Microbiology and Biotechnology, vol. 48, Art. no. 7–8, Jul. 2021, doi: 10.1093/jimb/kuab042.

S. B. Lorentzen et al., “Genomic and Proteomic Study of Andreprevotia ripae Isolated from an Anthill Reveals an Extensive Repertoire of Chitinolytic Enzymes,” Journal of Proteome Research, vol. 20, Art. no. 8, Jun. 2021, doi: 10.1021/acs.jproteome.1c00358.

T. Ullmann, B. Schmid, P. Manz, G. E. M. Tovar, and M. Ramisch, “Turbulent energy transfer into zonal flows from the weak to the strong flow shear regime in the stellarator TJ-K,” Physics of Plasmas, vol. 28, Art. no. 5, May 2021, doi: 10.1063/5.0039959.

Y. Corre et al., “Thermographic reconstruction of heat load on the first wall of Wendelstein 7-X due to ECRH shine-through power,” vol. 61, Art. no. 6, Apr. 2021, doi: 10.1088/1741-4326/abebea.

M. W. Brookman et al., “Resolving ECRH deposition broadening due to edge turbulence in DIII-D,” Physics of Plasmas, Apr. 2021, doi: 10.1063/1.5140992.

G. Reichardt et al., “Investigations on the Process Stability of Dry Deep Drawing with Volatile Lubricants Injected Through Laser-Drilled Microholes,” TMS 2021 150th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series., 2021, doi: https://doi.org/10.1007/978-3-030-65261-6_21.

2020

T. Ullmann, B. Schmid, P. Manz, B. van Milligen, G. E. M. Tovar, and M. Ramisch, “Experimental observation of resonance manifold shrinking under zonal flow shear,” Physical Review E, vol. 102, Art. no. 6, Dec. 2020, doi: 10.1103/physreve.102.063201.

A. Oraby, N. Werner, Z. Sungur, and S. Zibek, “Factors Affecting the Synthesis of Cellobiose Lipids by Sporisorium scitamineum,” Frontiers in Bioengineering and Biotechnology, vol. 8, Nov. 2020, doi: 10.3389/fbioe.2020.555647.

A. Gubelt, L. Blaschke, T. Hahn, S. Rupp, T. Hirth, and S. Zibek, “Comparison of Different Lactobacilli Regarding Substrate Utilization and Their Tolerance Towards Lignocellulose Degradation Products,” Current Microbiology, vol. 77, Art. no. 10, Oct. 2020, doi: 10.1007/s00284-020-02131-y.

BibTeX

@article{Gubelt2020,
  abstract = {Fermentative lactic acid production is currently impeded by low pH tolerance of the production organisms, the successive substrate consumption of the strains and/or the requirement to apply purified substrate streams. We identified Lactobacillus brevis IGB 1.29 in compost, which is capable of producing lactic acid at low pH values from lignocellulose hydrolysates, simultaneously consuming glucose and xylose. In this study, we compared Lactobacillus brevis IGB 1.29 with the reference strains Lactobacillus brevis ATCC 367, Lactobacillus plantarum NCIMB 8826 and Lactococcus lactis JCM 7638 with regard to the consumption of C5- and C6-sugars. Simultaneous conversion of C5- and C6-monosaccharides was confirmed for L. brevis IGB 1.29 with consumption rates of 1.6 g/(L h) for glucose and 1.0 g/(L h) for xylose. Consumption rates were lower for L. brevis ATCC 367 with 0.6 g/(L h) for glucose and 0.2 g/(L h) for xylose. Further trials were carried out to determine the sensitivity towards common toxic degradation products in lignocellulose hydrolysates: acetate, hydroxymethylfurfural, furfural, formate, levulinic acid and phenolic compounds from hemicellulose fraction. L. lactis was the least tolerant strain towards the inhibitors, whereas L. brevis IGB 1.29 showed the highest tolerance. L. brevis IGB 1.29 exhibited only 10{\%} growth reduction at concentrations of 26.0 g/L acetate, 1.2 g/L furfural, 5.0 g/L formate, 6.6 g/L hydroxymethylfurfural, 9.2 g/L levulinic acid or 2.2 g/L phenolic compounds. This study describes a new strain L. brevis IGB 1.29, that enables efficient lactic acid production with a lignocellulose-derived C5- and C6-sugar fraction.},
  author = {Gubelt, Angela and Blaschke, Lisa and Hahn, Thomas and Rupp, Steffen and Hirth, Thomas and Zibek, Susanne},
  day = 01,
  doi = {10.1007/s00284-020-02131-y},
  issn = {1432-0991},
  journal = {Current Microbiology},
  month = {10},
  number = 10,
  pages = {3136--3146},
  title = {Comparison of Different Lactobacilli Regarding Substrate Utilization and Their Tolerance Towards Lignocellulose Degradation Products},
  url = {https://doi.org/10.1007/s00284-020-02131-y},
  volume = 77,
  year = 2020
}

A. Beck and S. Zibek, “Growth Behavior of Selected Ustilaginaceae Fungi Used for Mannosylerythritol Lipid (MEL) Biosurfactant Production – Evaluation of a Defined Culture Medium,” Frontiers in Bioengineering and Biotechnology, vol. 8, Oct. 2020, doi: 10.3389/fbioe.2020.555280.

T. Hahn et al., “Determining different impact factors on the xylonic acid production using Gluconobacter oxydans DSM 2343,” Process Biochemistry, vol. 94, pp. 172–179, Jul. 2020, doi: 10.1016/j.procbio.2020.04.011.

S. Garland, P. Manz, and M. Ramisch, “The influence of magnetic field curvature on intermittency in drift-wave turbulence in the stellarator TJ-K,” Physics of Plasmas, vol. 27, Art. no. 5, May 2020, doi: 10.1063/5.0004963.

D. Moseev et al., “Collective Thomson Scattering Diagnostic for Wendelstein 7-X at 175 GHz,” Journal of Instrumentation, vol. 15, Art. no. 05, May 2020, doi: 10.1088/1748-0221/15/05/c05035.

T. Jorissen, A. Oraby, G. Recke, and S. Zibek, “A systematic analysis of economic evaluation studies of second-generation biorefineries providing chemicals by applying biotechnological processes,” Biofuels, Bioproducts and Biorefining, vol. 14, Art. no. 5, Apr. 2020, doi: 10.1002/bbb.2102.

Y. Vainshtein et al., “Draft Genome Sequence of Andreprevotia sp. Strain IGB-42, a Chitinolytic Bacterium Isolated from a Soil Sample of an Anthill in Stuttgart, Germany,” Microbiology Resource Announcements, vol. 9, Art. no. 10, Mar. 2020, doi: 10.1128/mra.01454-19.

T. Hahn, A. Roth, R. Ji, E. Schmitt, and S. Zibek, “Chitosan production with larval exoskeletons derived from the insect protein production,” Journal of Biotechnology, vol. 310, pp. 62–67, Feb. 2020, doi: 10.1016/j.jbiotec.2019.12.015.

C. Valotteau et al., “Antibacterial properties of glycosylated surfaces: variation of the glucosidal moiety and fatty acid conformation of grafted microbial glycolipids,” Mol. Syst. Des. Eng., vol. 5, Art. no. 7, 2020, doi: 10.1039/D0ME00059K.

O. L. Krutkin et al., “Investigation of nonlinear effects in Doppler reflectometry using full-wave synthetic diagnostics,” Plasma Science and Technology, vol. 22, Art. no. 6, 2020, doi: 10.1088/2058-6272/ab5c28.

V. V. Bulanin et al., “Full-Wave Modeling of Doppler Backscattering from Filaments,” Plasma Physics Reports, vol. 46, pp. 490–495, 2020, doi: 10.1134/S1063780X20050025.

C. Lechte, G. D. Conway, T. Görler, T. Happel, and the ASDEX Upgrade Team, “Fullwave Doppler Reflectometry Simulations for Density Turbulence Spectra in ASDEX Upgrade Using GENE and IPF-FD3D,” Plasma Sci. Technol., Art. no. 22, 2020, doi: 10.1088/2058-6272/ab7ce8.

Die folgenden Seiten enthalten die Publikationen bis 2019 vom IGVP und den Vorgängerinstituten IGVT und IPF aus den Jahren:

2019
2018
2017
2016
2015
2014: Plasma
2013: Plasma | IGVT
2012: IPF | IGVT
2011: IPF | IGVT
2010
2009
2008
2007
2006

Peer reviewed Publikationen ab 2020

2023

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