Results 61 to 70 of about 8,057 (291)

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

The Value Chain of Sustainable Dual Carbon Sodium Ion Capacitors

Batteries &Supercaps, EarlyView.
Sodium‐ion capacitors (SICs) bridge the energy‐power gap between batteries and supercapacitors, offering sustainable and scalable energy storage solutions. This review provides a 360‐degree perspective on SIC technology, covering material choices, presodiation strategies, manufacturing challenges, applications and life cycle assessment to ensure ...
Roman Mysyk, Daniel Carriazo, Damien Saurel, Maria Arnaiz, Olivier Crosnier, Thierry Brousse, Kangkang Ge, Pierre‐Louis Taberna, Patrice Simon, Sander Ratso, Einar Karu, Alberto Varzi, Juan Pablo Badillo, Andrea Hainthaler, Akshaya Sidharthan, Andrea Balducci, Obinna Egwu Eleri, Amaia Saenz de Buruaga, Javier Olarte, Juan Dayron Lopez Cardona, Fatemeh Bahmei, Sebastian P. Bautista, Marcel Weil, Jon Ajuria   +23 more
wiley   +1 more source

Lived experiences of utilities‐based indebtedness in Greece: Tracing the afterlives of austerity

The Geographical Journal, EarlyView., 2023
Abstract During the past decade, Greece has been a hotbed of crisis and austerity. Unsurprisingly, austerity and counter‐austerity politics captured academic and public attention. This paper seeks to contribute to discussions on the articulations and legacies of austerity in Greece, and beyond, by emphasising questions of reproduction.
Aliki Koutlou
wiley   +1 more source

Viability of an Electrically Driven Pump-Fed Hybrid Rocket for Small Launcher Upper Stages

Aerospace, 2019
An electrically driven pump-fed cycle for a hybrid rocket engine is proposed and compared to a simpler gas-pressurized feed system. A liquid-oxygen/paraffin-based fuel hybrid rocket engine which powers the third stage of a Vega-like launcher is ...
Lorenzo Casalino, Filippo Masseni, Dario Pastrone   +2 more
doaj   +1 more source

Thermal degradation of impact‐modified PMMA in mechanical and chemical recycling

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Poly (methyl methacrylate) (PMMA) is a thermoplastic with outstanding tensile strength, UV resistance, and a high level of transparency that has been used widely for optical applications such as glazing in the automobile industry. Mechanical recycling, the most widespread method, degrades the physical properties and prevents reusing PMMA in ...
Tien Dat Nguyen, Nooshin Saadatkhah, Yanfa Zhuang, Jacopo De Tommaso, Karen Stoeffler, Adrien Faye, Gregory S. Patience   +6 more
wiley   +1 more source

A REVIEW ON CRYOGENIC ROCKET ENGINE

, 2018
Cryogenic treatment is a material science and involves the process of reducing the temperature of component over an extended period of time to extreme cold levels, usually slightly below -250⁰C. Cryogenic engines are commonly used in rockets for launching geosynchronous class satellites This paper is all about Cryogenic Technology used in rocket’s ...
openaire   +2 more sources

The Little Rocket Engine That Could [PDF]

Mechanical Engineering, 2016
This paper highlights advancements of a research team in the field of miniature spacecrafts and development and advantages of CubeStats. CubeSats are space age hitchhikers, that is, miniature spacecraft that fly into orbit aboard rockets whose primary payloads are full-size satellites.
openaire   +2 more sources

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

A review of multiscale numerical modeling of rock mechanics and rock engineering

Deep Underground Science and Engineering, EarlyView.
Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley   +1 more source

Research Progress of Decommissioned Solid Rocket Motor Charge Emptying and Recycling Technology [PDF]

Hangkong bingqi
As the service life of solid rocket engines comes to an end, their operational reliability and performance stability gradually decline. Effectively disposing of large numbers of retired solid rocket engines has become a critical issue.
Zhou Yaping, Lin Zhihui, Wang Maoyu, Dong Jun, Liu Tiansheng, Qiao Haitao
doaj   +1 more source