TY - JOUR A1 - Vollmer, Michael T1 - Naked eye celestial objects and phenomena: how far can we see at night? JF - European Journal of Physics N2 - How far can we see with the naked eye at night? Many celestial objects like stars and galaxies as well as transient phenomena such as comets and supernovae can be observed in the night sky. We discuss the furthest distances of such objects and phenomena observable with the naked eye during the night-time for Earth-bound observers. The physics of night-time visual ranges differs from that of daytime observations because human vision shifts from cones to rods. In addition, mostly point sources are observed due to the large distances involved. Whether celestial objects and phenomena can be detected depends on the contrast of their radiation and the background sky luminance. We present a concise overview of how far we can see at night by first discussing the effects of the Earth's atmosphere. This includes attenuation of transmitted radiation as well as its role as a source of background radiation. Disregarding the attenuation of light due to interstellar and intergalactic dust, simple maximum night-time visual range estimates are based on the inverse square law, which can be easily verified by laboratory and demonstration experiments. From the respective calculations, we find that individual stars within the Milky Way galaxy of up to 15 000 light years are observable. Even further away are observable galaxies with several billion stars. The Andromeda galaxy can be observed with the naked eye at a distance of around 2.5 million light years. Similarly, the observability of supernovae also allows a visual range beyond the Milky Way galaxy. Finally, gamma ray bursts as the most energetic events in the universe are discussed concerning naked eye observations. Y1 - 2025 U6 - https://doi.org/10.1088/1361-6404/adbf74 VL - 46 IS - 3 PB - IOP Science ER - TY - JOUR A1 - Redka, D. A1 - Mukhin, N. A1 - Grishkanich, A. A1 - Terukov, E. A1 - Hirsch, Sören A1 - Ignateva, L. T1 - NdYAG surface modification of ZnO for solar cells JF - Journal of Physics: Conference Series Y1 - 2019 U6 - https://doi.org/10.1088/1742-6596/1410/1/012106 VL - 1410 SP - 012106 PB - IOP Science ER - TY - JOUR A1 - Wehland, Markus A1 - Corydon, Thomas J. A1 - González-Torres, Luis Fernando A1 - Abdelfattah, Fatima A1 - Sahana, Jayashree A1 - Schulz, Herbert A1 - Mushunuri, Ashwini A1 - Burenkova, Hanna A1 - Wuest, Simon L. A1 - Krüger, Marcus A1 - Kraus, Armin A1 - Grimm, Daniela T1 - New Knowledge About Tissue Engineering Under Microgravity Conditions in Space and on Earth JF - International Journal of Molecular Sciences N2 - Microgravity (µg)-generated three-dimensional (3D) multicellular aggregates can serve as models of tissue and disease development. They are relevant in the fields of cancer and in vitro metastasis or regenerative medicine (tissue engineering). Driven by the 3R concept—replacement, reduction, and refinement of animal testing—µg-exposure of human cells represents a new alternative method that avoids animal experiments entirely. New Approach Methodologies (NAMs) are used in biomedical research, pharmacology, toxicology, cancer research, radiotherapy, and translational regenerative medicine. Various types of human cells grow as 3D spheroids or organoids when exposed to µg-conditions provided by µg simulating instruments on Earth. Examples for such µg-simulators are the Rotating Wall Vessel, the Random Positioning Machine, and the 2D or 3D clinostat. This review summarizes the most recent literature focusing on µg-engineered tissues. We are discussing all reports examining different tumor cell types from breast, lung, thyroid, prostate, and gastrointestinal cancers. Moreover, we are focusing on µg-generated spheroids and organoids derived from healthy cells like chondrocytes, stem cells, bone cells, endothelial cells, and cardiovascular cells. The obtained data from NAMs and µg-experiments clearly imply that they can support translational medicine on Earth. Y1 - 2025 U6 - https://doi.org/10.3390/ijms27010341 VL - 27 IS - 1 PB - MDPI ER - TY - JOUR A1 - Schwarz, Franziska A1 - Schwarz, Klaus A1 - Creutzburg, Reiner T1 - New Methodology and Checklist of Wi-Fi Connected and App-Controlled IoT-Based Consumer Market Smart Home Devices JF - Electronic Imaging KW - Internet of Things KW - IoT KW - IoT security KW - cybersecurity KW - privacy KW - security KW - smart home KW - smart home devices Y1 - 2020 U6 - https://doi.org/10.2352/ISSN.2470-1173.2020.3.MOBMU-276 SN - 2470-1173 SP - 276-1 EP - 276-15 PB - Society for Imaging Science and Technology CY - Springfield, VA ER - TY - JOUR A1 - Kalinkat, Gregor A1 - Jechow, Andreas A1 - Schroer, Sibylle A1 - Hölker, Franz T1 - Nocturnal pandas: conservation umbrellas protecting nocturnal biodiversity JF - Trends in Ecology & Evolution N2 - Light pollution is an emerging ecological threat. To mitigate its negative consequences, creative inter- and transdisciplinary solutions and societal interactions are needed. To this end, we introduce nocturnal umbrella species representative of light-sensitive biodiversity whose protection will safeguard vital ecosystem services and a wide range of co-occurring species. Y1 - 2025 U6 - https://doi.org/10.1016/j.tree.2025.05.006 VL - 40 IS - 8 SP - 736 EP - 739 PB - Elsevier ER - TY - JOUR A1 - Kuznetsov, Artur A1 - Frorip, Aleksandr A1 - Sünter, Alar A1 - Korsakov, Vadim A1 - Konoplev, Georgii A1 - Stepanova, Oksana A1 - Roschina, Natalia A1 - Ovsyannikov, Nikolay A1 - Lialin, Daniil A1 - Gerasimchuk, Roman A1 - Dmitriev, Alexander A1 - Mukhin, Nikolay A1 - Hirsch, Sören T1 - Optical Chemical Sensor Based on Fast-Protein Liquid Chromatography for Regular Peritoneal Protein Loss Assessment in End-Stage Renal Disease Patients on Continuous Ambulatory Peritoneal Dialysis JF - Chemosensors KW - optical chemical sensor KW - fast-protein liquid chromatography KW - UV LED KW - end-stage renal disease KW - peritoneal dialysis KW - peritoneal protein loss KW - albumin KW - point-of-care diagnostic devices Y1 - 2022 U6 - https://doi.org/10.3390/chemosensors10060232 VL - 10 IS - 6 PB - MDPI ER - TY - JOUR A1 - John, Stefanie A1 - Weizel, David A1 - Heumann, Anna Sophie A1 - Fischer, Anja A1 - Orlowski, Katja A1 - Mrkor, Kai-Uwe A1 - Edelmann-Nusser, Jürgen A1 - Witte, Kerstin T1 - Persisting inter‐limb differences in patients following total hip arthroplasty four to five years after surgery? A preliminary cross‐sectional study JF - BMC Musculoskelet Disorders KW - Gait KW - Inter-limb difference KW - Muscle strength KW - Range of motion KW - Balance KW - Total hip arthroplasty Y1 - 2021 U6 - https://doi.org/10.1186/s12891-021-04099-7 SN - 1471-2474 VL - 22 PB - BioMed Central ER - TY - JOUR A1 - Giesler, Jasper A1 - Pesch, Georg R. A1 - Weirauch, Laura A1 - Schmidt, Marc-Peter A1 - Thöming, Jorg A1 - Baune, Michae T1 - Polarizability-Dependent Sorting of Microparticles Using Continuous-Flow Dielectrophoretic Chromatography with a Frequency Modulation Method JF - Micromachines Y1 - 2020 U6 - https://doi.org/10.3390/mi11010038 VL - 11 IS - 1 SP - 38 PB - MDPI ER - TY - JOUR A1 - Scharf, Gili A1 - Guterding, Daniel A1 - Hen, Bar A1 - Sarte, Paul M. A1 - Ortiz, Brenden R. A1 - Rozenberg, Gregory Kh. A1 - Holder, Tobias A1 - Wilson, Stephen D. A1 - Jeschke, Harald O. A1 - Ron, Alon T1 - Pressure tuning of intrinsic and extrinsic sources to the anomalous Hall effect in CrGeTe3 JF - Physical Review Research N2 - The integrated Berry curvature is a geometric property that has dramatic implications for material properties. This study investigates the integrated Berry curvature and other contributions to the anomalous Hall effect in CrGeTe3 as a function of pressure. The anomalous Hall effect is absent in the insulating phase of CrGeTe3 and evolves with pressure in a domelike fashion as pressure is applied. The dome's edges are characterized by Fermi surface deformations, manifested as mixed electron and hole transport. We corroborate the presence of bipolar transport using ab initio calculations, which also predict a nonmonotonic behavior of the Berry curvature as a function of pressure. Quantitative discrepancies between our calculations and experimental results indicate that additional scattering mechanisms, which are also strongly tuned by pressure, contribute to the anomalous Hall effect in CrGeTe3. Y1 - 2025 U6 - https://doi.org/10.1103/PhysRevResearch.7.013127 VL - 7 IS - 1 SP - 1 EP - 8 PB - American Physical Society ER - TY - JOUR A1 - Kombe, Emmanuel Yeri A1 - Lang'at, Nickson A1 - Njogu, Paul A1 - Malessa, Reiner A1 - Weber, Christian-Toralf A1 - Njoka, Francis A1 - Krause, Ulrich T1 - Process modeling and evaluation of optimal operating conditions for production of hydrogen-rich syngas from air gasification of rice husks using aspen plus and response surface methodology JF - Bioresource Technology N2 - Biomass gasification is recognized as a viable avenue to accelerate the sustainable production of hydrogen. In this work, a numerical simulation model of air gasification of rice husks is developed using the Aspen Plus to investigate the feasibility of producing hydrogen-rich syngas. The model is experimentally validated with rice husk gasification results and other published studies. The influence of temperature and equivalence ratio on the syngas composition, H2 yield, LHVSyngas, H2/CO ratio, CGE, and PCG was studied. Furthermore, the synchronized effects of temperature and ER are studied using RSM to determine the operational point of maximizing H2 yield and PCG. The RSM analysis results show optimum performance at temperatures between 820 °C and 1090 °C and ER in the range of 0.06–0.10. The findings show that optimal operating conditions of the gasification system can be achieved at a more refined precision through simulations coupled with advanced optimization techniques. Y1 - 2022 UR - https://linkinghub.elsevier.com/retrieve/pii/S096085242201063X SN - 0960-8524 VL - 361 SP - 1 EP - 11 PB - Elsevier ER - TY - JOUR A1 - Beck, Eberhard A1 - Schrader, Thomas A1 - Tetzlaff, Laura A1 - Schröder, Cornelia T1 - Prospektive Risikoanalyse: Die Ähnlichkeit von Medikamentennamen in der Drugbank-Datenbank T1 - Prospective risk analysis: The similarity of drug names in the Drugbank database JF - GMS Medizinische Informatik, Biometrie und Epidemiologie Y1 - 2018 U6 - https://doi.org/10.3205/mibe000187 VL - 14 IS - 2 SP - 1/7 EP - 7/7 ER - TY - JOUR A1 - Beck, Eberhard A1 - Rödiger, Stefan A1 - Liefold, Marius A1 - Ruhe, Madeleine A1 - Reinwald, Mark A1 - Deckert, P. Markus T1 - Quantification of DNA double-strand breaks in peripheral blood mononuclear cells from healthy donors exposed to bendamustine by an automated γH2AX assay—an exploratory study JF - Journal of Laboratory and Precision Medicine Y1 - 2018 U6 - https://doi.org/10.21037/jlpm.2018.04.10 VL - 3 IS - 5 SP - 47-12 ER - TY - JOUR A1 - Fachet, Melanie A1 - Witte, Carina A1 - Flassig, Robert J. A1 - Rihko-Struckmann, Liisa K. A1 - McKie-Krisberg, Zaid A1 - Polle, Jürgen E. W. A1 - Sundmacher, Kai T1 - Reconstruction and analysis of a carbon-core metabolic network for Dunaliella salina JF - BMC Bioinformatics KW - Metabolic network reconstruction KW - Central carbon metabolism KW - Flux balance analysis KW - Dunaliella salina Y1 - 2020 U6 - https://doi.org/10.1186/s12859-019-3325-0 VL - 21 IS - 1 PB - BioMed Central ER - TY - JOUR A1 - Dietenberger, Manuel A1 - Jechow, Andreas A1 - Kalinkat, Gregor A1 - Schroer, Sibylle A1 - Saathoff, Birte A1 - Hölker, Franz T1 - Reducing the fatal attraction of nocturnal insects using tailored and shielded road lights JF - communications biology N2 - The attraction of insects to artificial light is a global environmental problem with far-reaching implications for ecosystems. Since light pollution is rarely integrated into conservation approaches, effective mitigation strategies towards environmentally friendly lighting that drastically reduce insect attraction are urgently needed. Here, we tested novel luminaires in two experiments (i) at a controlled experimental field site and (ii) on streets within three municipalities. The luminaires are individually tailored to only emit light onto the target area and to reduce spill light. In addition, a customized shielding renders the light source nearly invisible beyond the lit area. We show that these novel luminaires significantly reduce the attraction effect on flying insects compared to different conventional luminaires with the same illuminance on the ground. This underlines the huge potential of spatially optimized lighting to help to bend the curve of global insect decline without compromising human safety aspects. A customized light distribution should therefore be part of sustainable future lighting concepts, most relevant in the vicinity of protected areas. Y1 - 2024 U6 - https://doi.org/10.1038/s42003-024-06304-4 VL - 7 SP - 1 EP - 12 PB - Nature ER - TY - JOUR A1 - Trittel, Torsten A1 - Puzyrev, Dmitry A1 - Harth, Kirsten A1 - Stannarius, Ralf T1 - Rotational and translational motions in a homogeneously cooling granular gas JF - npj microgravity N2 - A granular gas composed of monodisperse spherical particles was studied in microgravity experiments in a drop tower. Translations and rotations of the particles were extracted from optical video data. Equipartition is violated, the rotational degrees of freedom were excited only to roughly 2/3 of the translational ones. After stopping the mechanical excitation, we observed granular cooling of the ensemble for a period of three times the Haff time, where the kinetic energy dropped to about 5% of its initial value. The cooling rates of all observable degrees of freedom were comparable, and the ratio of rotational and translational kinetic energies fluctuated around a constant value. The distributions of translational and rotational velocity components showed slight but systematic deviations from Gaussians at the start of cooling. Y1 - 2024 U6 - https://doi.org/10.1038/s41526-024-00420-5 VL - 10 IS - 1 SP - 1 EP - 6 PB - Springer ER - TY - JOUR A1 - Oseev, Aleksandr A1 - Lucklum, Ralf A1 - Zubtsov, Mikhail A1 - Schmidt, Marc-Peter A1 - Mukhin, Nikolay V. A1 - Hirsch, Soeren T1 - SAW-Based Phononic Crystal Microfluidic Sensor—Microscale Realization of Velocimetry Approaches for Integrated Analytical Platform Applications JF - Sensors KW - phononic crystal KW - liquid sensor KW - ultrasonic velocimetry KW - μTAS Y1 - 2017 U6 - https://doi.org/10.3390/s17102187 VL - 17 IS - 10 SP - 2187 ER - TY - JOUR A1 - Schwarz, Franziska A1 - Schwarz, Klaus A1 - Creutzburg, Reiner T1 - Security and Privacy Investigation of Wi-Fi Connected and App-Controlled IoT-Based Consumer Market Smart Light Bulbs JF - Electronic Imaging KW - Internet of Things KW - IoT KW - cybersecurity KW - privacy KW - security KW - smart home KW - smart home devices Y1 - 2020 U6 - https://doi.org/10.2352/ISSN.2470-1173.2020.3.MOBMU-275 SN - 2470-1173 SP - 275-1 EP - 275-11 PB - Society for Imaging Science and Technology CY - Springfield, VA ER - TY - JOUR A1 - Kutia, Mykhailo A1 - Mukhin, Nikolay A1 - Petrova, Hanna A1 - Oseev, Aleksandr A1 - Bakhchova, Liubov A1 - Schmidt, Marc-Peter A1 - Aman, Alexander A1 - Palis, Stefan A1 - Tarasov, Sergey A1 - Hirsch, Soeren T1 - Sensor for the evaluation of dielectric properties of sulfur-containing heteroatomic hydrocarbon compounds in petroleum based liquids at a microfluidic scale JF - AIP Advances KW - Microfluidics KW - Chemical compounds KW - Petroleum KW - Dielectric spectroscopy KW - Microfluidic devices KW - Gasoline KW - Dielectric properties Y1 - 2020 U6 - https://doi.org/10.1063/1.5141482 VL - 10 IS - 2 SP - 025006 PB - American Institute of Physics ER - TY - JOUR A1 - Prinz, Alexander A1 - Orlowski, Katja A1 - Beck, Eberhard A1 - Witte, Kerstin T1 - Serious Games for Seniors With Dementia: A Pilot Study JF - Journal of Applied Gerontology N2 - Dementia, marked by cognitive decline, significantly impacts daily life. With global prevalence rising, traditional treatments manage symptoms but have side effects and offer no cure. Non-pharmacological interventions, like serious games, are gaining importance. This study assesses the feasibility and benefits of serious games for people with mild to moderate dementia over a 10-week intervention. Sixty-one patients were recruited, with 35 completing the study. The intervention included six games focusing on physical and cognitive training. Outcome measures were motor function, cognitive assessments, quality of life, and depression. Results showed significant improvements in dynamic balance (p = .013) but no significant changes in other measures. The findings suggest that serious games are feasible and can improve motor functions like balance. However, short intervention periods may limit their impact on cognitive function and quality of life. Longer interventions and personalized game designs are recommended for greater benefits. Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33440 VL - 2025 SP - 1 EP - 11 PB - SAGE ER - TY - JOUR A1 - Dietenberger, Manuel A1 - Jechow, Andreas A1 - Sann, Manuela A1 - Hölker, Franz T1 - Shedding light on dark taxa: exploring a cryptic diversity of parasitoid wasps affected by artificial light at night JF - Scientific Reports N2 - Artificial light at night (ALAN) contributes to the globally observed insect decline. ALAN attracts nocturnal insects from their native ecosystems and disturbs their functions in the food web. Road lights in this context are ubiquitous and relevant ALAN sources that are often not considered in conservation approaches. In a previous study we showed that shielded LED road lights are suited to be part of conservation measures by effectively reducing the attraction of nocturnal insects. Here we show that this positive effect holds true for parasitoid wasps in an experimental BACI design (Before-After-Control-Impact). Combining morphological with molecular and phylogenetic analyses, we identified 106 individuals (62 morphotypes) of a minimum of 45 genera out of 13 Hymenoptera families. We were able to identify 21 species, 11 of which are newly reported in Southern Germany (Baden-Württemberg). Further combining knowledge on life history and host appearance from our data and the literature, we discuss potential impacts of ALAN ranging from an influence on nocturnal pollination via parasitoid pressure on moth species and biological control of invasive pest species to tritrophic interactions between primary and secondary parasitoids. We conclusively think that shielded LED road lights will reduce the ecological impact of ALAN on parasitoid wasps in a large and undescribed number of taxa with different host associations, likely affecting associated ecosystem functions such as biological control. Y1 - 2025 U6 - https://doi.org/10.1038/s41598-025-88111-3 VL - 15 SP - 1 EP - 12 PB - Nature ER -