cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of head group and lipid tail oxidation in the cell membrane revealed through integrated simulations and experiments
Creators: name: Yusupov, M.
name: Wende, K.
name: Kupsch, S.
name: Neyts, E. C.
name: Reuter, S.
name: Bogaerts, A.
Publisher: name: [London] : Macmillan Publishers Limited, part of Springer Nature
Year: 2017
Subjects: subject: Cell Membrane
subject: Hydroxyl Radical
subject: Lipid Bilayers
subject: Mass Spectrometry
subject: Membrane Fluidity
subject: Molecular Dynamics Simulation
subject: Molecular Structure
subject: Oxidation-Reduction
subject: Phospholipids
subject: Reactive Oxygen Species
subject: 500
subject: 600

description: We report on multi-level atomistic simulations for the interaction of reactive oxygen species (ROS) with the head groups of the phospholipid bilayer, and the subsequent effect of head group and lipid tail oxidation on the structural and dynamic properties of the cell membrane. Our simulations are validated by experiments using a cold atmospheric plasma as external ROS source. We found that plasma treatment leads to a slight initial rise in membrane rigidity, followed by a strong and persistent increase in fluidity, indicating a drop in lipid order. The latter is also revealed by our simulations. This study is important for cancer treatment by therapies producing (extracellular) ROS, such as plasma treatment. These ROS will interact with the cell membrane, first oxidizing the head groups, followed by the lipid tails. A drop in lipid order might allow them to penetrate into the cell interior (e.g., through pores created due to oxidation of the lipid tails) and cause intracellular oxidative damage, eventually leading to cell death. This work in general elucidates the underlying mechanisms of ROS interaction with the cell membrane at the atomic level.
Hybrid Renewable Energy Systems for the Supply of Services in Rural Settlements of Mediterranean Partner Countries. The HYRESS Project
Creators: name: Papadakis, G.
name: Mohamed, E.S.
name: Kyriakarakos, G.
name: Kassem, A.-W.S.
name: Linares, A.
name: Ovidio, L.
name: Bard, J.
name: Panahandeh, B.
name: Outzourhit, A.
name: El Khazen, A.
name: Janssen, R.
name: Kyritsis, E.
name: Kyritsis, S.
Publisher: name: WIP-Munich
Year: 2008
Subjects: PV Systems
Off-grid Applications

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3348-3352
description: Hybrid renewable energy systems constitute a most promising way of electrification in remote areas, where the cost of grid extension is prohibitive and the price of fossil fuels increase drastically with the remoteness of the location. It has been demonstrated that hybrid energy systems based on micro-grids can significantly reduce the total life-cycle cost of stand-alone power supplies in many situations, while at the same time providing a more reliable supply of electricity. New technologies, inverters in particular, allow for micro-grid development and application in order to supplying high quality AC power while permitting multiple renewable energy technologies employment thus offering possibilities for easy grid expansion. The present paper regards the development, application and experimental investigation of three such micro-grids in Egypt, Morocco and Tunisia. The power supply technologies regard PV, Wind Converters, a fuel cell (Morocco case) and diesel generators while the problem of energy storage is studied by the use of a hydrogen subsystem (Moroccan case) and a water desalination system (Egyptian case). The control of these systems is a major issue and it is also under extensive investigation.
title: Literaturgespräch mit Nina Blazon
Creators: name: Schnabel, Dorinne
Publisher: name: Universitaet Tuebingen
Year: 2025
Subjects: subject: Literatur

description: Bei Dorinne Schnabel zu Gast ist Nina Blazon. Als freie Autorin entwirft sie fantastische Welten für Kinder und Jugendliche. Mittlerweile hat sie mehr als 30 Kinder- und Jugendromane veröffentlicht, die in zahlreiche Sprachen übersetzt wurden. Darunter ihr Erstling „Im Bann des Fluchträgers“ (2006), „Die Woran-Saga“ (2006), „Rabenherz & Eismund“ (2021), , „Ich träumte von einer Bestie“ (2023) und viele andere. Die beiden sprechen zunächst einmal darüber wie Nina zu ihrem Autorinnen-Dasein gekommen ist, welche Bücher sie bis heute geprägt haben und warum gerade fantastische Welten eine solche Faszination auf sie ausüben. Zum Abschluss hören wir von ihr selbst gelesene Ausschnitte aus einem ihrer Werke.
The Experience of Feed in Tariff in Italy - Results so Far and Middle Term Forecasts
Creators: name: Montanino, G.
name: Trezza, F.
name: Tilli, F.
Publisher: name: WIP-Munich
Year: 2008
Subjects: PV Deployment
PV Markets

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3658-3659
description: The work describes the main results of the feed in tariff mechanism in Italy for photovoltaic systems operating in Italy since mid-2005 and the forecasts in the middle term for commissioned plants, incentives to be distributed and installed capacity under different scenarios.
title: Literaturgespräch mit Margit Weber
Creators: name: Schnabel, Dorinne
Publisher: name: Universitaet Tuebingen
Year: 2025
Subjects: subject: Literatur

description: Zu sich ins Studio eingeladen hat Dorinne Schnabel heute Michelle Margit Weber. Sie schrieb von 2015 bis 2019 am Institut für Physikalische und Theoretische Chemie der Universität Tübingen (auf dem Campus Morgenstelle) ihre Doktorarbeit. Momentan lebt sie in der Schweiz und sie hat vor kurzem ihren ersten Roman „die Physik des Todes“ im Selfpuplishing herausgebracht. Die beiden sprechen zunächst einmal darüber, was Michelle dazu gebracht hat ein Buch im Selfpublishing zu veröffentlichen, wie ihre eigene Schreibroutine aussieht und ob sie Vorbilder hat. Zum Abschluss werden wir auch Ausschnitte aus ihrem Werk hören.
Influence of Hygroscopy on the Optical Properties of the Up-Converter BaCl2:Er3+
Creators: name: Strümpel, C.
name: Mccann, M.
name: Hahn, G.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Advanced Photovoltaics
New Types of Cells and Modules

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 645-647
description: A conventional silicon solar cell transmits about 20% of the solar spectrum. A way to reduce these transmission losses is up-conversion, where low energy photons are coupled together to form a photon with energy sufficient to create an electron-hole-pair in the solar cell. An up-converter applied to the rear of a bifacial solar cell therefore leads to a spectral response at wavelengths beyond the conventional absorption range of the solar cell.
For the application to crystalline silicon solar cells the most promising up-converters are host materials doped with trivalent erbium (Er3+), where both the up-conversion efficiency and excitation range are strongly dependent on the properties of the host material. Beside sodium yttrium fluoride doped with trivalent erbium (NaYF4:Er3+), which to date is the most efficient up-converter under excitation at about 1500 nm, barium chloride doped with trivalent erbium (BaCl2:Er3+) is proposed to be an efficient up-converter due to advantageous phononic properties [1]. A drawback of chloride materials is hygroscopy, the property to attract water from surrounding air. Within this paper the influence of the hygroscopic properties of barium chloride on the optical properties and the consequence on the up-conversion performance of BaCl2:Er3+ are investigated.
Charge Transfer Across a ZnO/Electrolyte Interface Induced by Sub-Bandgap Illumination
Creators: name: Larina, L.
name: Shevaleevskiy, O.
name: Ahn, B.T.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Advanced Photovoltaics
New Types of Cells and Modules

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 655-658
description: The role of interfacial band gap states in sub-bandgap photoinduced electron transfer across a ZnO/electrolyte junction has been analyzed using time-resolved photocurrent measurements in the millisecond regime. The crystallographic structure of ZnO samples was characterized using X-ray diffraction measurements. A kinetic model for charge carrier transport at the ZnO/electrolyte interface based on the intermediacy of the surface states was developed, and the rate equations were analytically solved. Based on an analysis of the experimental data and theoretical predictions, the density of the surface states was determined to be 3.1×1013 cm-2 and the capture cross section was 1.5 × 10-16 cm2. The obtained experimental results are consistent with the developed kinetic model based on a surface-state mediated charge transfer mechanism.
Functional All-Silicon Nanowire Solar Cells
Creators: name: Thony, P.
name: Delsol, R.
name: Jaussaud, C.
name: Rondel, N.
name: Rouvière, E.
name: Poncet, S.
name: Perraud, S.
name: Mouchet, C.
name: Gentile, P.
name: Baron, T.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Advanced Photovoltaics
New Types of Cells and Modules

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 670-674
description: A functional all-silicon nanowire solar cell was demonstrated. Silicon nanowires were grown by Chemical Vapour Deposition (CVD), using the vapour-liquid-solid technique with gold as a catalyst. N-type and p-type doping of the nanowires was achieved by introducing gaseous precursors inside the CVD growth chamber. Evidence of efficient doping has been shown through electrical transport measurements on single nanowires and Secondary Ion Mass Spectrometry (SIMS). A fully integrated process for fabricating nanowire-based solar cells was developed, including nanowires encapsulation and electrical contact formation. Several test devices were built with different electrical architectures. Test devices consisting of n-type silicon nanowires grown on a p-type silicon substrate were characterized. A rectifying behaviour was observed in the dark I-V characteristics due to the p-n junction formed at the nanowire layer / substrate interface. Under illumination, a photovoltaic effect was obtained with I(V) curves showing the typical behaviour of a photovoltaic cell. This result represents the first photovoltaic cell based on a homojonction structure build with silicon nanowires.
A Unified Inner Bound for the Two-Receiver Memoryless Broadcast Channel with Channel State and Message Side Information
Creators: name: Asadi, Behzad
name: Ong, Lawrence
name: Johnson, Sarah J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider the two-receiver memoryless broadcast channel with states where each receiver requests both common and private messages, and may know part of the private message requested by the other receiver as receiver message side information (RMSI). We address two categories of the channel (i) channel with states known causally to the transmitter, and (ii) channel with states known non-causally to the transmitter. Starting with the channel without RMSI, we first propose a transmission scheme and derive an inner bound for the causal category. We then unify our inner bound for the causal category and the best-known inner bound for the non-causal category, although their transmission schemes are different. Moving on to the channel with RMSI, we first apply a pre-coding to the transmission schemes of the causal and non-causal categories without RMSI. We then derive a unified inner bound as a result of having a unified inner bound when there is no RMSI, and applying the same pre-coding to both categories. We show that our inner bound is tight for some new cases as well as the cases whose capacity region was known previously.
description: Extended version of the same-titled paper submitted to the 2016 IEEE International Symposium on Information Theory
Silicon Nanowires: Condition of Synthesis and Size Selection
Creators: name: Benoit-Moez, C.
name: Bastide, S.
name: Lévy-Clément, C.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Advanced Photovoltaics
New Types of Cells and Modules

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 641-644
description: Silicon nanowires were obtained by metal-assisted chemical etching. Two different top-down methods were used: (i) a one-step method using HF/AgNO3 solution, in which Ag is both the oxidant and the catalyst; (ii) a multi-step method including masking with a monolayer of polystyrene spheres; a metallization step by Ag electroless deposition or Au evaporation; and finally etching in HF/H2O2. The effects of temperature, reactant concentrations and silicon resistivity were studied and a formation mechanism proposed for the one-step method.
What We Don't Know About Spreadsheet Errors Today: The Facts, Why We Don't Believe Them, and What We Need to Do
Creators: name: Panko, Ray
Publisher: name: arXiv
Year: 2016
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Research on spreadsheet errors is substantial, compelling, and unanimous. It has three simple conclusions. The first is that spreadsheet errors are rare on a per-cell basis, but in large programs, at least one incorrect bottom-line value is very likely to be present. The second is that errors are extremely difficult to detect and correct. The third is that spreadsheet developers and corporations are highly overconfident in the accuracy of their spreadsheets. The disconnect between the first two conclusions and the third appears to be due to the way human cognition works. Most importantly, we are aware of very few of the errors we make. In addition, while we are proudly aware of errors that we fix, we have no idea of how many remain, but like Little Jack Horner we are impressed with our ability to ferret out errors. This paper reviews human cognition processes and shows first that humans cannot be error free no matter how hard they try, and second that our intuition about errors and how we can reduce them is based on appallingly bad knowledge. This paper argues that we should reject any prescription for reducing errors that has not been rigorously proven safe and effective. This paper also argues that our biggest need, based on empirical data, is to do massively more testing than we do now. It suggests that the code inspection methodology developed in software development is likely to apply very well to spreadsheet inspection.
description: 15 Pages, 5 Figures, 3 Tables, some in colour
Technology Improvement in China Renewable Energy Development Project for PV Industry and Market Developement in China
Creators: name: Ter Horst, E.
name: Luo, X.
name: Zhang, C.
name: Wu, D.
Publisher: name: WIP-Munich
Year: 2008
Subjects: PV Systems
Off-grid Applications

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3609-3613
description: China’s stars are rising convincingly in the PV field. This concerns lately the national PV market (since 2008) but much more the Chinese PV industry development. Since 2004 an explosive and continuously successful development in the whole PV supply chain in China has been reported. In 2008 the World Bank/GEF China REDP project has been evaluated, showing the important role and impacts of the project in the development of the Chinese market and industry. Overall the REDP and the technology improvement activities have been very successful.
Preparation of Silicon Nanoparticles from Colloidal Dispersions for Monolayer Formation Using Langmuir-Blodgett Technique
Creators: name: Treiber, L.
name: Bumby, C.
name: Huang, S.J.
name: Conibeer, G.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Advanced Photovoltaics
New Types of Cells and Modules

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 624-628
description: Surface functionalization of amorphous silicon nanoparticles (a-SiNPs) with organosilanes has been investigated. The motivation for this work stems from the aim to prepare an absorber material for the Hot Carrier Solar Cell (HCSC) by forming a highly ordered periodic array of NPs using Langmuir-Blodgett technique (LB). a-SiNPs were passivated via colloidal phase chemistry using trimethoxyropylsilane (TMOPS). A reaction mechanism has been suggested and characterization has been performed to confirm functionalization using TEM, UV-VIS, FTIR and qualitative observations.
Determination of Cr Density in the Active Phase of a High-current Vacuum Arcs
Creators: name: Gortschakow, S.
name: Khakpour, A.
name: Popov, S.
name: Franke, S.
name: Methling, R.
name: Uhrlandt, D.
Publisher: name: Praha : Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Physics
Year: 2017
Subjects: subject: vacuum arc
subject: anode spot
subject: absorption spectroscopy
subject: Konferenzschrift
subject: 530

description: Melting and evaporation of the anode surface strongly influence the interruption capability of vacuum circuit breakers, because they lead to injection of atomic vapour into the inter-electrode gap. Determination of the vapour density and its dynamics with respect to different anode phenomena is therefore of great importance. Results of Cr density measurements in a high-current vacuum arc by using broadband absorption spectroscopy are presented. The vapour density of atomic Cr is determined after the formation of anode spots as well as close to the current zero. Cr I resonance lines at 425.43 nm have been used for the analysis. An AC current pulse with maximum value of 7 kA and a frequency of 100 Hz is applied to a vacuum arc between two cylindrical butt electrodes made of CuCr7525 with a diameter of 10 mm. The high-current anode modes are observed by means of high-speed camera imaging. The temporal evolution of the Cr ground state density is presented and discussed.
Quantum Zeno subspaces by repeated multi-spin projections
Creators: name: Kalb, Norbert
name: Cramer, Julia
name: Markham, Matthew
name: Twitchen, Daniel J.
name: Hanson, Ronald
name: Taminiau, Tim H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Repeated observations inhibit the coherent evolution of quantum states through the quantum Zeno effect. In multi-qubit systems this effect provides new opportunities to control complex quantum states. Here, we experimentally demonstrate that repeatedly projecting joint observables of multiple spins creates coherent quantum Zeno subspaces and simultaneously suppresses dephasing caused by the environment. We encode up to two logical qubits in these subspaces and show that the enhancement of the dephasing time with increasing number of projections follows a scaling law that is independent of the number of spins involved. These results provide new insights into the interplay between frequent multi-spin measurements and non-Markovian noise and pave the way for tailoring the dynamics of multi-qubit systems through repeated projections.
New Superconducting Phase of Li$_x$(C$_6$H$_{16}$N$_2$)$_y$Fe$_{2-z}$Se$_2$ with $T_\textrm{c}$ = 41 K Obtained through the Post-Annealing
Creators: name: Hosono, Shohei
name: Noji, Takashi
name: Hatakeda, Takehiro
name: Kawamata, Takayuki
name: Kato, Masatsune
name: Koike, Yoji
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Post-annealing effects on the crystal structure and superconductivity of the lithium- and hexamethylenediamine (HMDA)-intercalated superconductor Lix(C6H16N2)yFe2-zSe2 have been investigated. Through the post-annealing, a two-step reduction of the interlayer spacing between neighboring Fe layers, d, has been observed. It has been found that a new phase of Lix(C6H16N2)yFe2-zSe2 with d= 10.30(2) Å and Tc = 41 K different from the as-intercalated phase is stabilized owing to the possible stable inclination of HMDA intercalated between FeSe layers. This result supports the domic relation between Tc and d in the FeSe-based intercalation superconductors. The reason why Tc increases with a decrease in d through the post-annealing is discussed.
description: 12 pages, 6 figures
Microscopic Friction Emulators
Creators: name: Mandelli, Davide
name: Tosatti, Erio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Cold ions sliding across periodic potential patterns formed by lasers elucidate the physics of dry friction between crystals. Experiments with no more than six ions suffice to explore a vast domain of frictional forces.
description: 2 pages, 1 Figure
Hmox1 Upregulation Is a Mutual Marker in Human Tumor Cells Exposed to Physical Plasma-Derived Oxidants
Creators: name: Bekeschus, Sander
name: Freund, Eric
name: Wende, Kristian
name: Gandhirajan, Rajesh
name: Schmidt, Anke
Publisher: name: Basel : MDPI
Year: 2018
Subjects: subject: Heme oxygenase 1
subject: kiNPen
subject: Plasma medicine
subject: Reactive oxygen and nitrogen species
subject: RNS
subject: ROS
subject: 540
subject: 610

description: Increasing numbers of cancer deaths worldwide demand for new treatment avenues. Cold physical plasma is a partially ionized gas expelling a variety of reactive oxygen and nitrogen species, which can be harnesses therapeutically. Plasmas and plasma-treated liquids have antitumor properties in vitro and in vivo. Yet, global response signatures to plasma treatment have not yet been identified. To this end, we screened eight human cancer cell lines to investigate effects of low-dose, tumor-static plasma-treated medium (PTM) on cellular activity, immune-modulatory properties, and transcriptional levels of 22 redox-related genes. With PTM, a moderate reduction of metabolic activity and modest modulation of chemokine/cytokine pattern and markers of immunogenic cell death was observed. Strikingly, the Nuclear factor (erythroid-derived 2)-like 2 (nrf2) target heme oxygenase 1 (hmox1) was upregulated in all cell lines 4 h post PTM-treatment. nrf2 was not changed, but its baseline expression inversely and significantly correlated with hmox1 expression after exposure to PTM. Besides awarding hmox1 a central role with plasma-derived oxidants, we present a transcriptional redox map of 22 targets and chemokine/cytokine secretion map of 13 targets across eight different human tumor cell lines of four tumor entities at baseline activity that are useful for future studies in this field.
Performance and Functioning Verification of Battery Charge Controllers for Stand-Alone Photovoltaic (PV) System by Indoor Testing Using a PV Module Simulator
Creators: name: Antunes De Amorim, T.
name: Wiesner, W.
Publisher: name: WIP-Munich
Year: 2008
Subjects: PV Systems
Off-grid Applications

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3605-3608
description: To evaluate the performance and functioning from Battery Charge Controllers for Stand-Alone Photovoltaic (PV) System a test station based on the Indoor test procedure from the IEC 62124 for system design verification has been build. When the experiment starts the IEC 62509 Ed. 1 was in voting phase, which continues in discussion and has its forecast publication date in May 2009. By using a PV Module Simulator replicable income energy is generated during the test of each charge controller. The test procedure has been divided into 9 phases and two system designs have been used, where 4 PWM regulated charge controllers have been tested according with their functioning and performance.
Hyress Project. Study Case of Ksar Ghilene, Tunisia
Creators: name: Cendagorta, M.
name: Friend, M.
name: López-Manzanares, L.
name: Linares, A.
name: El Khazen, A.
Publisher: name: WIP-Munich
Year: 2008
Subjects: PV Systems
Off-grid Applications

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3614-3617
description: The strategic objective of HYRESS project is to remove the knowledge barriers against the installation of RE Systems. The ultimate objective of the project is to develop, combine, install, test and assess the performance of low-cost pilot hybrid RE systems in remote areas of the Mediterranean. The main system design criteria have been modularity, robustness, simplicity in use and the requirement of a very low maintenance. Research challenges can be found in the field of system management but also in the best combination of available technologies according to the local prevailing conditions. Within HYRESS project, three pilot hybrid systems will be developed, installed, tested and evaluated (technically and socially) in selected sites of Egypt, Morocco and Tunisia. ITER will be responsible for the micro-grid design at Tunisia. The place chosen is the site of Ksar Ghilène, a village located in southern Tunisia, in the governorate of Kébili at Bouflija depression.
Hückel--Hubbard-Ohno modeling of $\boldsymbolπ$-bonds in ethene and ethyne with application to trans-polyacetylene
Creators: name: Timár, Máté
name: Barcza, Gergely
name: Gebhard, Florian
name: Veis, Libor
name: Legeza, Örs
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Quantum chemistry calculations provide the potential energy between two carbon atoms in ethane (H$_3$C$-$CH$_3$), ethene (H$_2$C$=$CH$_2$), and ethyne (HC$\equiv$CH) as a function of the atomic distance. Based on the energy function for the $σ$-bond in ethane, $V_σ(r)$, we use the Hückel model with Hubbard--Ohno interaction for the $π$~electrons to describe the energies $V_{σπ}(r)$ and $V_{σππ}(r)$ for the $σπ$ double bond in ethene and the $σππ$ triple bond in ethyne, respectively. The fit of the force functions shows that the Peierls coupling can be estimated with some precision whereas the Hubbard-Ohno parameters are insignificant at the distances under consideration. We apply the Hückel-Hubbard-Ohno model to describe the bond lengths and the energies of elementary electronic excitations of trans-polyacetylene, (CH)$_n$, and adjust the $σ$-bond potential for conjugated polymers.
description: 10 pages, 7 figures, 3 tables
Redox for Repair: Cold Physical Plasmas and Nrf2 Signaling Promoting Wound Healing
Creators: name: Schmidt, Anke
name: Bekeschus, Sander
Publisher: name: Basel : MDPI
Year: 2018
Subjects: subject: Keap1
subject: KiNPen
subject: Plasma medicine
subject: Reactive nitrogen species (RNS)
subject: Reactive oxygen species (ROS)
subject: Redox regulation
subject: 540
subject: 610

description: Chronic wounds and ulcers are major public health threats. Being a substantial burden for patients and health care systems alike, better understanding of wound pathophysiology and new avenues in the therapy of chronic wounds are urgently needed. Cold physical plasmas are particularly effective in promoting wound closure, irrespective of its etiology. These partially ionized gases deliver a therapeutic cocktail of reactive oxygen and nitrogen species safely at body temperature and without genotoxic side effects. This field of plasma medicine reanimates the idea of redox repair in physiological healing. This review compiles previous findings of plasma effects in wound healing. It discusses new links between plasma treatment of cells and tissues, and the perception and intracellular translation of plasma-derived reactive species via redox signaling pathways. Specifically, (i) molecular switches governing redox-mediated tissue response; (ii) the activation of the nuclear E2-related factor (Nrf2) signaling, together with antioxidative and immunomodulatory responses; and (iii) the stabilization of the scaffolding function and actin network in dermal fibroblasts are emphasized in the light of wound healing.
Feasibility of Photovoltaic-Thermoelectric Hybrid Systems
Creators: name: Van Sark, W.G.J.H.M.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Advanced Photovoltaics
New Types of Cells and Modules

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 636-640
description: Outdoor performance of photovoltaic (PV) modules suffers from elevated temperatures. Conversion efficiency losses of up to about 25% can result, depending on the type of integration of the modules in the roof. Cooling of modules would therefore enhance annual PV performance. Instead of module cooling we propose to use the thermal waste by attaching thermoelectric (TE) converters to the back of PV modules, to form a PV-TE hybrid module. Due to the temperature difference over the TE converter additional electricity can be generated. Employing present day thermoelectric materials with typical figure of merits (Z) of 0.004 K-1 at 300 K may lead to efficiency enhancements of up to 23% for roof integrated PVTE modules, as is calculated by means of an idealized model. The annual energy yield would increase by 14.7%-11%, for two annual irradiance and temperature profiles studied, i.e., for Malaga, Spain, and Utrecht, the Netherlands, respectively. As new TE materials are being developed, efficiency enhancements of up to 50% and annual energy yield increases of up to 24.9% may be achievable. The developed idealized model, however, is judged to overestimate the results by about 10% for practical PV-TE hybrids.
The impact of additional scalar bosons at the LHC
Creators: name: Kumar, Mukesh
name: von Buddenbrock, Stefan
name: Chakrabarty, Nabarun
name: Cornell, Alan S.
name: Kar, Deepak
name: Mandal, Tanumoy
name: Mellado, Bruce
name: Mukhopadhyaya, Biswarup
name: Reed, Robert
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this study we consider an effective model by introducing two hypothetical real scalars, $H$ and $χ$ - a dark matter candidate, where the masses of these scalars are $2 m_h < m_H < 2 m_t$ and $m_χ\approx m_h/2$ with $m_h$ and $m_t$ being the Standard Model Higgs boson and top quark masses respectively. A distortion in the transverse momentum distributions of $h$ in the intermediate region of the spectrum through the processes $p p \to H \to hχχ$ could be observed in this model. An additional scalar, $S$, has been postulated to explain large $H \to hχχ$ branching ratios, assuming $m_h \lesssim m_S \lesssim m_H-m_h$ and $m_S > 2 m_χ$. Furthermore, a scenario of a two Higgs doublet model (2HDM) is introduced and a detailed proposal at the present energies of the Large Hadron Collider to study the extra CP-even ($h, H$), CP-odd ($A$) and charged ($H^\pm$) scalars has been pursued. With possible phenomenological implications, all possible spectra and decay modes for these scalars are discussed. Based on the mass spectrum of $H, A$ and $H^\pm$, the production of multi-leptons and $Z$+jets+missing-energy events are predicted. A specific, Type-II 2HDM model is discussed in detail.
description: Submitted to the book of proceedings of the High Energy Particle Physics workshop, February 8th-10th 2016, iThemba LABS, South Africa
Combination of chemotherapy and physical plasma elicits melanoma cell death via upregulation of SLC22A16
Creators: name: Sagwal, Sanjeev Kumar
name: Pasqual-Melo, Gabriella
name: Bodnar, Yana
name: Gandhirajan, Rajesh Kumar
name: Bekeschus, Sander
Publisher: name: London [u.a.] : Nature Publishing Group
Year: 2018
Subjects: subject: Drug delivery
subject: Melanoma
subject: 570

description: Malignant melanoma is an aggressive cancer that develops drug resistance leading to poor prognosis. Efficient delivery of chemotherapeutic drugs to the tumor tissue remains a major challenge in treatment regimens. Using murine (B16) and human (SK-MEL-28) melanoma cells, we investigated traditional cytotoxic agents in combination with cold physical plasma-derived oxidants. We report synergistic cytotoxicity of doxorubicin and epirubicin, and additive toxicity of oxaliplatin with plasma exposure in coefficient of drug interaction analysis. The combination treatment led to an increased DNA damage response (increased phosphorylation of ATM, γ-H2AX foci, and micronuclei formation). There was also an enhanced secretion of immunogenic cell death markers ATP and CXCL10 in cell culture supernatants following combination treatment. The observed synergistic effects in tumor cells was due to enhanced intracellular doxorubicin accumulation via upregulation of the organic cationic transporter SLC22A16 by plasma treatment. The doxorubicin uptake was reversed by pretreating cells with antioxidants or calcium influx inhibitor BTP2. Endoribonuclease-prepared siRNAs (esiRNA)-mediated knockdown of SLC22A16 inhibited the additive cytotoxic effect in tumor cells. SK-MEL 28 and THP-1 monocytes co-culture led to greater THP-1 cell migration and SK-MEL-28 cytotoxicity when compared with controls. Taken together, we propose pro-oxidant treatment modalities to sensitize chemoresistant melanoma cells towards subsequent chemotherapy, which may serve as therapeutic strategy in combination treatment in oncology.
Capture into resonance and phase space dynamics in optical centrifuge
Creators: name: Armon, Tsafrir
name: Friedland, Lazar
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: The process of capture of a molecular enesemble into rotational resonance in the optical centrifuge is investigated. The adiabaticity and phase space incompressibility are used to find the resonant capture probability in terms of two dimensionless parameters P1,P2 characterising the driving strength and the nonlinearity, and related to three characteristic time scales in the problem. The analysis is based on the transformation to action-angle variables and the single resonance approximation, yielding reduction of the three-dimensional rotation problem to one degree of freedom. The analytic results for capture probability are in a good agreement with simulations. The existing experiments satisfy the validity conditions of the theory.
Cold Atmospheric Plasma in the Treatment of Osteosarcoma
Creators: name: Gümbel, Denis
name: Bekeschus, Sander
name: Gelbrich, Nadine
name: Napp, Matthias
name: Ekkernkamp, Axel
name: Kramer, Axel
name: Stope, Matthias B.
Publisher: name: Basel : Molecular Diversity Preservation International
Year: 2017
Subjects: subject: Apoptosis
subject: Cancer
subject: CAP
subject: Osteosarcoma
subject: Plasma medicine
subject: Plasma oncology
subject: 570
subject: 540

description: Human osteosarcoma (OS) is the most common primary malignant bone tumor occurring most commonly in adolescents and young adults. Major improvements in disease-free survival have been achieved by implementing a combination therapy consisting of radical surgical resection of the tumor and systemic multi-agent chemotherapy. However, long-term survival remains poor, so novel targeted therapies to improve outcomes for patients with osteosarcoma remains an area of active research. This includes immunotherapy, photodynamic therapy, or treatment with nanoparticles. Cold atmospheric plasma (CAP), a highly reactive (partially) ionized physical state, has been shown to inherit a significant anticancer capacity, leading to a new field in medicine called “plasma oncology.” The current article summarizes the potential of CAP in the treatment of human OS and reviews the underlying molecular mode of action.
Design and Analysis of PV Hybrid System for Isoleted Household Electrification
Creators: name: Skunpong, R.
name: Unahalekhaka, P.
name: Plangklang, B.
name: Khan-Ngern, W.
Publisher: name: WIP-Munich
Year: 2008
Subjects: PV Systems
Off-grid Applications

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3637-3640
description: This paper describes a design method and construction of a PV hybrid system for household electrification in remote area which has typical important electrical loads for daily life such as television, refrigerator, electric Fan, coffee maker, and radio. The paper shows the design method which is a short and proper method for the PV design. The design is simulated by software to prove and optimize the design. The simulation is shown that the method is correct for this design. The construction is done accordingly to the design. A prototype house is constructed specially for demonstration of the system. The PV hybrid system is constructed inside the prototype house which has a 1.8 kWp, 20 kWh of battery, and 3 kW of diesel generator. The results of the system shows that the designed PV hybrid system can deliver the power to the house continually 24 hours This can ensure that the proposed PV hybrid system is correctly designed and can be used for utility in the remote area where has no an electric grid.
One Year Follow-Up Risk Assessment in SKH-1 Mice and Wounds Treated with an Argon Plasma Jet
Creators: name: Schmidt, Anke
name: Von Woedtke, Thomas
name: Stenzel, Jan
name: Lindner, Tobias
name: Polei, Stefan
name: Vollmar, Brigitte
name: Bekeschus, Sander
Publisher: name: Basel : Molecular Diversity Preservation International
Year: 2017
Subjects: subject: Dermal full-thickness wounds
subject: KINPen plasma jet
subject: Plasma medicine
subject: Reactive oxygen and nitrogen species
subject: Risk evaluation
subject: SKH1 mouse model
subject: 570
subject: 540

description: Multiple evidence in animal models and in humans suggest a beneficial role of cold physical plasma in wound treatment. Yet, risk assessment studies are important to further foster therapeutic advancement and acceptance of cold plasma in clinics. Accordingly, we investigated the long-term side effects of repetitive plasma treatment over 14 consecutive days in a rodent full-thickness ear wound model. Subsequently, animals were housed for 350 days and sacrificed thereafter. In blood, systemic changes of the pro-inflammatory cytokines interleukin 1β and tumor necrosis factor α were absent. Similarly, tumor marker levels of α-fetoprotein and calcitonin remained unchanged. Using quantitative PCR, the expression levels of several cytokines and tumor markers in liver, lung, and skin were found to be similar in the control and treatment group as well. Likewise, histological and immunohistochemical analysis failed to detect abnormal morphological changes and the presence of tumor markers such as carcinoembryonic antigen, α-fetoprotein, or the neighbor of Punc 11. Absence of neoplastic lesions was confirmed by non-invasive imaging methods such as anatomical magnetic resonance imaging and positron emission tomography-computed tomography. Our results suggest that the beneficial effects of cold plasma in wound healing come without apparent side effects including tumor formation or chronic inflammation.
Determination of the Diffusion Capacitance of a Bifacial Solar Cell Under Monochromatic Light: Influence of the Junction Recombination and Illumination Wavelength
Creators: name: Barro, I.
name: Ndiaye, M.
name: Deme, M.
name: Mbodji, S.
name: Ba, E.
name: Sissoko, G.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Advanced Photovoltaics
Fundamental Studies

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 608-611
description: A bifacial n+-p-p+ solar cell is studied under constant monochromatic illumination. The continuity equation related to the minority carriers density in the base of the cell is resolved with boundary conditions defined by minority carrier
recombination velocities at the back surface Sb [1] and at the junction Sf [1] for either front or back side illumination. The extension of the collection layer beyond the space charge region is then analysed and leads to a diffusion capacitance C [2,3,4]. This diffusion capacitance is studied as a function of illumination wavelength for various Sf and leads to the space charge diffusion capacitance.
Hansen, Klaus P.: Das Paradigma Kollektiv. Neue Einsichten in Vergesellschaftung und das Wesen des Sozialen
Creators: name: Langner-Pitschmann, Annette
name: Czellnik, Lisa
name: Müller, Maria Clara
name: Schum, Elisa
Publisher: name: Theologische Revue
Year: 2023

description: Theologische Revue, Vol. 119 (2023): September
A Neutrophil Proteomic Signature in Surgical Trauma Wounds
Creators: name: Bekeschus, Sander
name: Lackmann, Jan-Wilm
name: Gümbel, Denis
name: Napp, Matthias
name: Schmidt, Anke
name: Wende, Kristian
Publisher: name: Basel : Molecular Diversity Preservation International
Year: 2018
Subjects: subject: Chaperones
subject: Damage-associated molecular patterns
subject: Heat-shock proteins
subject: Mass spectrometry
subject: Matrix metalloproteinase
subject: Peptidases
subject: Post-translational modifications
subject: Redox regulation
subject: 570
subject: 540

description: Non-healing wounds continue to be a clinical challenge for patients and medical staff. These wounds have a heterogeneous etiology, including diabetes and surgical trauma wounds. It is therefore important to decipher molecular signatures that reflect the macroscopic process of wound healing. To this end, we collected wound sponge dressings routinely used in vacuum assisted therapy after surgical trauma to generate wound-derived protein profiles via global mass spectrometry. We confidently identified 311 proteins in exudates. Among them were expected targets belonging to the immunoglobulin superfamily, complement, and skin-derived proteins, such as keratins. Next to several S100 proteins, chaperones, heat shock proteins, and immune modulators, the exudates presented a number of redox proteins as well as a discrete neutrophil proteomic signature, including for example cathepsin G, elastase, myeloperoxidase, CD66c, and lipocalin 2. We mapped over 200 post-translational modifications (PTMs; cysteine/methionine oxidation, tyrosine nitration, cysteine trioxidation) to the proteomic profile, for example, in peroxiredoxin 1. Investigating manually collected exudates, we confirmed presence of neutrophils and their products, such as microparticles and fragments containing myeloperoxidase and DNA. These data confirmed known and identified less known wound proteins and their PTMs, which may serve as resource for future studies on human wound healing.
On the Differentiability issue of the drift-diffusion equation with nonlocal Lévy-type diffusion
Creators: name: Xue, Liutang
name: Ye, Zhuan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B65, 35R11, 35K99, 35Q35

description: We investigate the differentiability issue of the drift-diffusion equation with nonlocal Lévy-type diffusion at either supercritical or critical type cases. Under the suitable conditions on the drift velocity and the forcing term in terms of the spatial Hölder regularity, we prove that the vanishing viscosity solution is differentiable with some Hölder continuous derivatives for any positive time.
description: 24 pages. Submitted
Towards Improved Photovoltaic Conversion Using Dilute Magnetic Semiconductors
Creators: name: Guillemoles, J.F.
name: Olsson, P.
name: Domain, C.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Advanced Photovoltaics
Fundamental Studies

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 470-471
description: Present photovoltaic devices, based on p/n junctions, are limited from first principles to maximal efficiencies of 31% (respectively 40% under full solar concentration). However, more innovative schemes may overcome the Schockley-Queisser limit since the theoretical maximal efficiency of solar energy conversion is higher than 85%. To date, the only practical realisation of such an innovative scheme has been multi-junction devices, which presently hold the world record efficiency of nearly 41% at significant solar concentration. It has been proposed to make use of the solar spectrum in much the same way as the multi-junction devices does but in a single cell, using impurity induced intermediate levels to create gaps of different sizes. This intermediate level semiconductor (ILSC) concept has a maximal
efficiency similar to that of multi-junction devices but suffers from prohibitively large non-radiative recombination rates. We here propose to use a ferromagnetic impurity scheme in order to reduce the non-radiative recombination rates while maintaining the high theoretical maximum efficiency of the ILSC scheme, that is almost 50%. Using density functional
theory calculations, the electronic and energetic properties of transition metal impurities in a wide range of semiconductors has been analysed. Out of the several hundred compounds studied, only a small number fulfil the design
criteria we here present.
Solar Home Systems in the Context of the Normative Resolution Aneel N.83, Brazil
Creators: name: Zilles, R.
name: Mocelin, A.R.
name: Morante, F.
Publisher: name: WIP-Munich
Year: 2008
Subjects: PV Systems
Off-grid Applications

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3618-3620
description: This work presents solar home systems implantation (SHS) in the community of São Francisco do Aiucá, located in the Mamirauá's Reserve of Sustainable Development (MRSD), in Amazonas' State, Brazil. The installation of these systems is the result of a project financed with sectorial funds, CT Energ/MME/CNPq, for communities' assistance isolated in the Northern region. The project was developed in the context of the Normative Resolution ANEEL N.83 September 2004, Electric Power Generation by Individual Systems with Intermittent Sources (SIGFI). In the total, 23 systems were installed, which are in operation since August 2005. The work shows the technical characteristics of the systems, the operational results after three years and an overview of the use of this standard in the utilities’ rural electrification programs.
Mineral-Based Coating of Plasma-Treated Carbon Fibre Rovings for Carbon Concrete Composites with Enhanced Mechanical Performance
Creators: name: Schneider, Kai
name: Lieboldt, Matthias
name: Liebscher, Marco
name: Fröhlich, Maik
name: Hempel, Simone
name: Butler, Marko
name: Schröfl, Christof
name: Mechtcherine, Viktor
Publisher: name: Basel : MDPI
Year: 2017
Subjects: subject: Carbon fibre
subject: Concrete
subject: Interphase
subject: Mineral coating
subject: Plasma treatment
subject: 600

description: Surfaces of carbon fibre roving were modified by means of a low temperature plasma treatment to improve their bonding with mineral fines; the latter serving as an inorganic fibre coating for the improved mechanical performance of carbon reinforcement in concrete matrices. Variation of the plasma conditions, such as gas composition and treatment time, was accomplished to establish polar groups on the carbon fibres prior to contact with the suspension of mineral particles in water. Subsequently, the rovings were implemented in a fine concrete matrix and their pull-out performance was assessed. Every plasma treatment resulted in increased pull-out forces in comparison to the reference samples without plasma treatment, indicating a better bonding between the mineral coating material and the carbon fibres. Significant differences were found, depending on gas composition and treatment time. Microscopic investigations showed that the samples with the highest pull-out force exhibited carbon fibre surfaces with the largest areas of hydration products grown on them. Additionally, the coating material ingresses into the multifilament roving in these specimens, leading to better force transfer between individual carbon filaments and between the entire roving and surrounding matrix, thus explaining the superior mechanical performance of the specimens containing appropriately plasma-treated carbon roving.