TY - JOUR A1 - Deluca, Marco A1 - Bermejo Moratinos, Raúl A1 - Grünbichler, Hannes A1 - Pressler, Volker A1 - Danzer, Robert A1 - Nickel, Klaus G. T1 - Raman spectroscopy for the investigation of indentation-induced domain texturing in lead zirconate titanate piezoceramics JF - Scripta materialia KW - Materials Y1 - 2019 IS - 63(2) SP - 343 EP - 346 ER - TY - JOUR A1 - Schidler, Susanne A1 - Adensam, Heidi A1 - Da Rocha, K. T1 - Zur Integration von Nachhaltigkeitsaspekten bei beruflichen Qualifizierungsmaßnahmen im Umweltsektor. Ergebnisse einer aktuellen Studie des AMS Österreich JF - AMS info / Arbeitsmarktservice Österreich KW - Professional Qualification KW - Environment KW - Sustainability Y1 - 2019 ER - TY - JOUR A1 - Prüggler, Natalie T1 - A cost-based approach to evaluate future grid structure options JF - International Journal of Distributed Energy Resources KW - Grid Y1 - 2019 ER - TY - JOUR A1 - Schidler, Susanne A1 - Jandl, Robert A1 - Büchsenmeister, Richard T1 - Praktikable Kriterien objektivieren JF - Forstzeitung KW - Sustainability Y1 - 2019 IS - 120(9) ER - TY - JOUR A1 - Schidler, Susanne T1 - Nachhaltige Entwicklung – Beispiele aus dem Bereich Erneuerbare Rohstoffe / Energien JF - AMS Forschungsnetzwerk / Arbeitsmarktservice Österreich, Abt. Arbeitsmarktforschung und Berufsinformation / AMS INFO KW - Sustainability KW - Renewable Energy KW - Renewable Raw Materials Y1 - 2019 ER - TY - JOUR A1 - Bhat, Karthik Subramanya A1 - Ganglbauer, Johanna A1 - Bosch, Elina T1 - Techno–economic simulation and evaluation of scalable ‘energy cells’ locally generating renewable energy JF - e & i Elektrotechnik und Informationstechnik N2 - The ERA-Net SES project Regional Renewable Energy Cells (R2EC) [1] aims at developing a scalable system for decentralized, interacting ‘energy cells’ with a high concentration of locally generated renewable energy. ‘Energy cells’ are essentially Renewable Energy Communities (ECs) in the European context. The system aims at maximizing the utilization of locally generated renewable energy through Electrical Storage (ES) as well as high-electric applications like e‑heating, Heat Pumps (HPs), and E‑Vehicles (EVs). The system is also designed to interact with other energy cells locally, thus, improving the utilization of locally generated energy. A variety of different adjacent energy cells in three countries, Austria (AT), Belgium (BE), and Norway (NO), are analyzed, and the results are used for the development of regional and renewable energy cell systems. This approach aims at developing tailor-made solutions that meet the different local and regional requirements and the electrical energy demand of the observed energy cells. A unique opportunity is created, as the three countries are at varying levels of regional development in the field of energy communities, and the regional requirements and conditions differ significantly. A comprehensive investigation of the technical and economic viability of the ECs in the three regions is conducted on a simulation level. The technical simulation results show an increased self-consumption of individual users and the overall cell in all of the observed testbeds, while the economic analysis shows economic benefits at varying levels in each of the observed testbeds. The implemented R2EC system ascertains both technical and economic viability in the observed testbeds. KW - Energy Cells KW - Renewable energy KW - Energy Communities KW - Self-consumption Y1 - IS - 139 SP - 612 EP - 620 ER - TY - JOUR A1 - Lang, Moritz T1 - The mechanism of scale-invariance JF - Automatica N2 - A system is invariant with respect to an input transformation if we can transform any dynamic input by this function and obtain the same output dynamics after adjusting the initial conditions appropriately. Often, the set of all such input transformations forms a Lie group, the most prominent examples being scale-invariant (, ) and translational-invariant () systems, the latter comprising linear systems with transfer function zeros at the origin. Here, we derive a necessary and sufficient normal form for invariant systems and, by analyzing this normal form, provide a complete characterization of the mechanism by which invariance can be achieved. In this normal form, all invariant systems (i) estimate the applied input transformation by means of an integral feedback, and (ii) then apply the inverse of this estimate to the input before processing it in any other way. We demonstrate our results based on three examples: a scale-invariant “feed-forward loop”, a bistable switch, and a system resembling the core of the mammalian circadian network. KW - Invariant systems KW - Normal form KW - Adaptive systems KW - Transmission zeros Y1 - VL - 140 IS - June 2022 ER - TY - JOUR A1 - Kubinger, Wilfried A1 - Peschak, Bernhard A1 - Wöber, Wilfried A1 - Sulz, Clemens T1 - Bildgebende Sensorsystems für robotische Systeme in der Agrar- und Landtechnik JF - e&i Elektrotechnik und Informationstechnik KW - Sensor KW - Robotics KW - Agriculture Y1 - 2018 VL - 134 IS - 6 SP - 316 EP - 322 ER - TY - JOUR A1 - Hagauer, Josef A1 - Matlschweiger, Ulrich A1 - Tippelreither, Christian A1 - Lutz, Markus A1 - Hribernig, Thomas A1 - Lackner, Maximilian T1 - Controlling Metal Fires through Cellulose Flake Blanketing Followed by Water Spray Cooling JF - Fire N2 - The traditional methods of fighting metal fires are not always safe for firefighters. The sand and salts that are thrown onto the fire to suffocate the flames can lead to splashes of molten metal, putting the firefighters and the surroundings at risk. A novel process is described where magnesium fires are brought under control using a simple two-step process. First, coated cellulose flakes, which contain approx. 30% inorganic salts, are blown onto the fire from a distance of several meters. Due to its low bulk density, the material settles smoothly on the fire and immediately covers the flames for several seconds. Before the hot metal can break through this cover, a fine water spray is applied to the fire. The water spray wets the top layer of the cellulose flakes, which will begin to char from the bottom. The water evaporates from within the cellulose flake layer and withdraws heat. It was observed that no hydrogen is formed and that this technique can safely control fires. It is judged that 90 kg of flakes could safely bring a pile of 75 kg of burning Mg flakes under control. By using a pneumatic conveying unit for the flakes, firefighters can effectively and efficiently cover the flames from a safe distance. This novel method could be recommended to firefighters in industrial magnesium processing plants, as well as local firefighters in the vicinity of such plants. KW - magnesium fire KW - metal fire KW - suffocation Y1 - U6 - http://dx.doi.org/10.3390/fire5030083 VL - 5 IS - 3 ER - TY - JOUR A1 - Diler, Abdulkerim A1 - Yanar, Mete A1 - Özdemir, Veysel Fatih A1 - Aydin, Recep A1 - Kaynar, Özgür A1 - Palangi, Valiollah A1 - Lackner, Maximilian A1 - Koçyigit, Rıdvan T1 - Effects of Slaughter Age of Holstein Friesian Bulls on Meat Quality: Chemical Composition, Textural Characteristics, Sensory Attributes and Fatty Acid Profile JF - Foods N2 - This study aimed to investigate the effects of slaughter age (young vs. old), muscle type (Longissimus dorsi (LD), Gluteus medius (GM)) and fat deposits (kidney knob and channel fat, subcutaneous fat, intramuscular fat) on chemical, organoleptic, textural characteristics and fatty acid composition of Holstein Friesian bull meat. For this purpose, the carcasses of 26 Holstein Friesian bulls that had been fattened on the same private farm were assigned to two experimental groups based on their age at slaughter: a young group (YG) (average age: 17.0 ± 1.0 months old) and an old group (OG) (average age: 22.0 ± 1.0 months old). The percentage of crude protein, panel tenderness score, polyunsaturated fatty acid (PUFA) and saturated fatty acid (SFA) content, the PUFA/SFA ratio and the hypocholesterolemic fatty acid (DFA)/hypercholesterolemic fatty acid (OFA) ratio of the bull carcasses decreased significantly with increasing slaughter age. By contrast, the OFA content of the carcasses significantly increased (p < 0.05) with increasing slaughter age. Advanced slaughter age resulted in lower panel tenderness scores. Additionally, the meat of the bulls in the OG was considered to be less healthy because of the less desirable fatty acid composition and nutritional indices, such as the PUFA/SFA and hypocholesterolemic/hypercholesterolemic ratios, compared to the meat from the bulls in the YG. Furthermore, the intramuscular fat and internal fat contained high percentages of PUFA and SFA and high PUFA/SFA and hypocholesterolemic/hypercholesterolemic ratios. Interestingly, the percentage of OFA content in the internal and intramuscular fat tissues decreased with increasing slaughter age. In conclusion, this study provided evidence that slaughter age and muscle and fat type are essential sources of variations in the textural characteristics, sensory panel attributes and fatty acid profile of meat from Holstein Friesian bulls. KW - fatty acid profile KW - sensory evaluation KW - slaughter age KW - texture profile analysis Y1 - U6 - http://dx.doi.org/10.3390/foods12010158 VL - 12 IS - 1 ER -