Results 51 to 60 of about 227,192 (314)

A Thermodynamic-Based Black-Box Modeling Approach for the Comprehensive Analysis of Vortex Tube Applications

open access: yesEnergies
To combat climate change successfully, enhancing existing processes is imperative alongside exploring new regenerative technologies. For this purpose, new components must be considered to improve the efficiency of thermodynamic processes.
Robert Sager   +2 more
doaj   +1 more source

Development of STEAM-Based Mathematics Teaching Materials on Direct and Inverse Proportion to Improve Mathematical Problem-Solving Ability and Self Regulated Learning

open access: yesUnnes Journal of Mathematics Education, 2023
This research was research and development whose product was in the form of teaching materials based on STEAM (Science, Technology, Engineering, Art, and Mathematics). This research and development aims to analyze the feasibility and readability, as well
Nanda Nur Izzati, Nuriana Rachmani Dewi
doaj   +1 more source

A Consideration on the Flow of Steam in Steam Turbines.

open access: yesJournal of the Society of Mechanical Engineers, 1941
多段落衝動タービンの相隣れる段落に於て、前段落の羽根より流出する蒸汽の有する速度エネルギの利用問題を中心として、タービン内における蒸汽の流動を取扱つた。就中低圧部で相隣れる二つの段落の間隙が可なりあり、且両段落の平均羽根円直径に急変を與へる場合をとつて、かゝる構造の汽室内に運轉状態の如何によつて起ることあるべき蒸汽の種々の流動状態を近似的計算によつて解析した。そして如何なる設計にすればかゝる特殊構造の段落のノズル效率を増進し、且その特性を改善し得るかを論じた。
openaire   +2 more sources

Advancing Lithium–Oxygen Batteries: Pioneering Cathode Catalyst Innovation and Artificial Intelligence‐Driven Design Paradigms

open access: yesAdvanced Materials, EarlyView.
This review summarizes the principles and challenges of nonaqueous lithium‐oxygen batteries and recent advances in cathode catalysts, including carbon‐based materials, metals, oxides, sulfides, nitrides, carbides, and redox mediators. It highlights emerging design strategies and artificial intelligence‐driven approaches, emphasizing data‐assisted ...
Yuqing Yao   +8 more
wiley   +1 more source

Steam drum design for direct steam generation [PDF]

open access: yesAIP Conference Proceedings, 2017
For the direct steam generation in solar fields, the recirculation concept has been demonstrated in several installations. Water masses in the solar field vary during transient phases, such as passing clouds. The volume of the steam drum can serve as a buffer during such transients by taking in excess water and providing water storage.
Willwerth, Lisa   +8 more
openaire   +3 more sources

Steam oxidation of advanced high temperature resistant alloys for ultra-supercritical applications [PDF]

open access: yes, 2012
Steam oxidation of heat exchanger tubing is of growing interest as increasing the efficiencies of conventional pulverised fuel fired power plants requires higher steam temperatures and pressures.
Lukaszewicz, Mikolaj
core  

Ultra‐High‐Throughput Discovery of Multifunctional Polyphenolic Coatings on Droplet Microarrays

open access: yesAdvanced Materials, EarlyView.
An ultra‐high‐throughput (UHT) combinatorial strategy enables the miniaturized synthesis and screening of ≈30 000 polyamine‐polyphenolic (PaPp) coatings using droplet microarrays (DMA). This approach reveals hundreds of previously unknown fluorescent, redox‐active, and antibacterial materials, including multifunctional, cell‐compatible surfaces ...
Vania Tanda Widyaya   +11 more
wiley   +1 more source

Systematic Investigation on Conjugate Heat Transfer Rates of Film Cooling Configurations

open access: yesInternational Journal of Rotating Machinery, 2005
For the determination of the film-cooling heat transfer, the design of a turbine blade relies on the conventional determination of the adiabatic film-cooling effectiveness and heat transfer conditions for test configurations.
Dieter Bohn   +2 more
doaj   +1 more source

Co1/Ru Single‐Atom Alloy Catalyst for Sustainable Polypropylene Hydrogenolysis to Long‐Chain Liquid Products

open access: yesAdvanced Materials, EarlyView.
A titania‐supported Co1/Ru single‐atom alloy catalyst enables efficient polypropylene hydrogenolysis. Ru─Co─Ru motifs maintain Ru activity while suppressing excessive chain scission to gaseous products. Both virgin and waste plastics achieve high, environmentally and economically optimal C11+ liquid yields, supporting sustainable chemical recycling ...
Yuzhen Ge   +6 more
wiley   +1 more source

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