Results 41 to 50 of about 25,209 (263)

Impact of Advances in Anion Exchange Membranes and Ionomers on Alkaline Fuel Cells

Chemistry – An Asian Journal, EarlyView.
Advances in anion exchange membranes (AEMs) and ionomer design have propelled alkaline fuel cells toward unprecedented performance, with peak power densities exceeding 3.5 W cm⁻2. This review highlights how molecular‐level innovations— stable hydrocarbon backbones, robust cationic groups, and pH‐gradient‐enabled bipolar interfaces—enable durable, high ...
Zhongyang Wang, Shrihari Sankarasubramanian, Jianping Chen, Vijay K. Ramani   +3 more
wiley   +1 more source

Mathematical simulation of dynamic processes in hydraulic and gas paths at the start of a liquid-propellant rocket engine with generator gas after-burning

, 2019
One of the key problems in the design of liquid-propellant rocket engines (LPREs) is the assurance of a trouble-free LPRE start. LPRE bench tryout is highly expensive, and emergency situations may have grave consequences (including engine and bench ...
O. Pylypenko, N. V. Khoriak, S. I. Dolhopolov, O. Nikolayev   +3 more
semanticscholar   +1 more source

Off-Design Combustion in Liquid-Propellant Rocket Engine with High-Frequency Instability

Transactions of the Japan Society for Aeronautical and Space Sciences, 2019
High-frequency combustion instability is one of the traditional problems of liquid-propellant rocket engines. It damages and melts the engines instantaneously.
T. Kanda
semanticscholar   +1 more source

Light‐Emitting Diodes as Wireless Optical Transducers of Chemical Information

ChemPhotoChem, EarlyView.
The synergy of light‐emitting diodes (LEDs) and bipolar electrochemistry has been explored to develop novel and straightforward optical readouts of chemical information. These approaches offer the possible encoding of the chemical information on the intensity of the light emission, opening multiple applications ranging from electroanalysis to dynamic ...
Marine Lavainne, Leslie R. Arias‐Aranda, Neso Sojic, Laurent Bouffier, Alexander Kuhn, Gerardo Salinas   +5 more
wiley   +1 more source

Study on the Mechanical Properties of Solid Composite Propellant Used as a Gas Generator

Journal of Aerospace Technology and Management, 2020
A gas generating propellants are used as initiators of liquid rocket propellants turbopumps and have as desired characteristic a high-volume production of low-temperature gas.
Lia Junqueira Pimont, Paula Cristina Gomes Fernandes, Luiz Fernando de Araujo Ferrão, Marcio Yuji Nagamachi, Kamila Pereira Cardoso   +4 more
doaj  

Cavitation Instability in Subcooled Liquid Nitrogen Nozzle Flows

Journal of Fluid Science and Technology, 2008
Subcooled cryogenic fluids are used in many fields such as a propellant for liquid propulsion rocket systems and a coolant for superconducting systems.
Kazuki NIIYAMA, Masakazu NOZAWA, Katsuhide OHIRA, Mamoru OIKE   +3 more
doaj   +1 more source

Mass Spectrometry Structural Proteomics Enabled by Limited Proteolysis and Cross‐Linking

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The exploration of protein structure and function stands at the forefront of life science and represents an ever‐expanding focus in the development of proteomics. As mass spectrometry (MS) offers readout of protein conformational changes at both the protein and peptide levels, MS‐based structural proteomics is making significant strides in the
Haiyan Lu, Zexin Zhu, Lauren Fields, Hua Zhang, Lingjun Li   +4 more
wiley   +1 more source

The structure of knowledge base to support the development of low-thrust liquid-propellant rocket engines based on computer technologies

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022
Some data on the knowledge base to support the development of low-thrust liquid-propellant rocket engines using computer technologies are presented. The structure of the base is proposed on the basis of characteristic features of engines, including the ...
V. V. Ryzhkov
doaj   +1 more source

AI‐Powered Advancements in Food Analysis and Safety: Ensuring Quality, Protection, and Precision in Modern Food Systems: A Review

eFood, Volume 6, Issue 4, August 2025.
The role of AI in contaminant detection and spoilage prediction is underlined. One of the applications is using near‐infrared spectroscopy on a machine learning algorithm sample to determine if it contains any adulterants in olive oil. Also, trying to develop computer vision techniques that can soon be widely deployed to detect defects in the automated
Ammar B. Altemimi, Farhang Hameed Awlqadr, Raqad R. Al‐Hatim, Syamand Ahmed Qadir, Mohammed N. Saeed, Aryan Mahmood Faraj, Tablo H. Salih, Hala S. Mahmood, Mohammad Ali Hesarinejad, Francesco Cacciola   +9 more
wiley   +1 more source

Analysis of a Stator-Rotor-Stator Spinning Disk Reactor in Single-Phase and Two-Phase Boiling Conditions Using a Thermo-Fluid Flow Network and CFD

Fluids, 2022
Cryogenic liquid propellants are used in liquid rocket engines to obtain high specific impulse. The flow rates are controlled by turbopumps that deliver liquid propellant to the engine at high pressure levels.
Lorenzo Mazzei, Francesco Maria Marin, Cosimo Bianchini, Riccardo Da Soghe, Cristina Bertani, Dario Pastrone, Maddalena Angelucci, Giuseppe Caggiano, Michiel de Beer   +8 more
doaj   +1 more source