Results 81 to 90 of about 151,235 (368)

Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique

International Journal of Energy Research, Volume 46, Issue 15, Page 22162-22175, December 2022., 2022
Three Ag‐M electrocatalysts (Ag/C, AgNi/C and AgCo/C) were synthesized using combustion synthesis method. All the three catalysts showed the presence of graphitic carbon after the synthesis. A detailed structural analysis indicates alloying at the surface of AgNi and AgCo, whereas segregation of bulk phases.
Afdhal Yuda, Anand Kumar, Ibrahim Abu Reesh, Christopher K. Russell, Jeffrey T. Miller, Mohammed Ali Saleh Saad, Mohammed J. Al‐Marri   +6 more
wiley   +1 more source

Two-step rocket engine bipropellant valve concept [PDF]

, 1969
Initiating combustion of altitude control rocket engines in a precombustion chamber of ductile material reduces high pressure surges generated by hypergolic propellants.
Capps, J. E., Ferguson, R. E., Pohl, H. O.   +2 more
core   +1 more source

High‐Speed 3D Printing Coupled with Machine Learning to Accelerate Alloy Development for Additive Manufacturing

Advanced Science, EarlyView.
This work shows combining high‐throughput experiments of metal 3D printing with data science‐driven prediction leads to faster alloy development. Researchers develop steel alloy specimens specifically for 3D printing by adjusting aluminum content (0–10 wt.%) and energy input during printing.
Avinash Hariharan, Marc Ackermann, Stephan Koss, Ali Khosravani, Johannes Henrich Schleifenbaum, Patrick Köhnen, Surya R. Kalidindi, Christian Haase   +7 more
wiley   +1 more source

Combustion and performance characteristics of SI engine with bioethanol blended fuels

International Journal of Energy Research, Volume 46, Issue 15, Page 24454-24464, December 2022., 2022
Summary The combustion characteristics of single‐cylinder spark‐ignition (SI) engines with bioethanol blended fuels have been investigated experimentally. It is known that bioethanol (alcohol‐based fuel) offers a range of advantages to be considered as a fuel for SI engines.
Bhaskar Paluri, Dipal Patel
wiley   +1 more source

Lean combustion and emission performance of a gasoline direct injection engine with active pre-chamber

Advances in Mechanical Engineering, 2022
Pre-chamber jet ignition technology can effectively improve flame propagation speed and in-cylinder combustion rate, so it is conducive to the improvement of thermal efficiency and fuel economy.
Li Zhang, Zhaoming Huang, Tao Wang, Niu Zhao, Haiyan Cheng, Weiguo Chen   +5 more
doaj   +1 more source

Pioneering Insights into the Reaction Kinetics of Metastable Intermolecular Composites Based on Metal Fluorides: Virtually non‐existent condensed Phase Combustion Products and Ultra‐Efficient Reactivity

Advanced Science, EarlyView.
Novel nano‐thermite designed based on bismuth's low boiling point and the Bi─F bond's low dissociation energy, features enhanced reactivity, minimal condensed phase combustion residues, and self‐pressurization. Its distinctive reaction dynamics facilitate a pre‐ignition stage, resulting in a reduced ignition threshold.
Xuwen Liu, Jingwei Li, Shenghua Feng, Yongsheng Jia, Maocong Hu, Yingkang Yao, Jinshan Sun, Quanmin Xie, Hongqian Sang   +8 more
wiley   +1 more source

Impact of steam flow into a combustion chamber of a contact gas-steam installation on its energy characteristics

Известия Томского политехнического университета: Инжиниринг георесурсов
Relevance. Reduction of natural gas consumption and emissions of harmful substances into the environment based on introduction of water vapor into a combustion chamber of a contact gas-steam installation. Aim.
Nikolay N. Galashov, Alexander A. Tubolev, Evgeny S. Boldushevsky, Alexander A. Minor   +3 more
doaj   +1 more source

CFD Study on Hydrogen-Air Premixed Combustion in a Micro Scale Chamber [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2010
This paper reports a CFD modeling study to investigate the hydrogen-air mixture combustion in a micro scale chamber. Nine species with nineteen reversible reactions were considered in the premixed combustion model.
Sayed Reza Shabanian, Masoud Rahimi, Abbas Khoshhal, Ammar Abdulaziz Alsairafi   +3 more
doaj  

Rocket propellant injector Patent [PDF]

, 1960
Propellant injectors for rocket combustion ...
Mantler, R. L.
core   +1 more source

Bioinspired Mechanisms and Actuation of Soft Robotic Crawlers

Advanced Science, EarlyView.
Researchers have been developing soft materials and robotic crawlers inspired by soft‐bodied animals to mimic effective crawling in complex environments. This review explores the state‐of‐the‐art in soft crawlers, highlighting the interaction between materials, crawling mechanisms, actuation, and applications. The review concludes by providing insights
Min Pan, Miaomiao Liu, Jiayi Lei, Yunyi Wang, Changhong Linghu, Chris Bowen, K. Jimmy Hsia   +6 more
wiley   +1 more source