Results 111 to 120 of about 20,111 (287)

Synergistic Engineering of Local Coordination and Electronic Modulation by CoSx Nanoparticles Dictates the Oxygen Reduction Pathway of Cobalt Single‐Atom Catalysts in Acidic Media

Carbon Neutralization, Volume 5, Issue 3, May 2026.
An electron structure modulation engineering strategy is developed by tuning the first coordination shell and leveraging synergistic effects with adjacent nanoparticles of Co single atoms. The CoS@Co–N2S2 catalyst achieves an average H2O2 selectivity of 88% (0.3–0.55 V), whereas CoS2@Co–NS3 exhibits 52% 4e− selectivity.
Yan Cheng, Zhengyi Guo, Morigen Bao, Bo Cao, Jun Zhang, Lele Peng   +5 more
wiley   +1 more source

Final design report of a personnel launch system and a family of heavy lift launch vehicles [PDF]

The objective was to design both a Personnel Launch System (PLS) and a family of Heavy Lift Launch Vehicles (FHLLVs) that provide low cost and efficient operation in missions not suited for the Shuttle.
Burton, Lee, Drake, Kerry, Kubinski, Russell, Mann, Darrin, Merritt, Debbie, Riha, David, Tupa, James, Turner, Ken   +7 more
core   +1 more source

A Study on the Regenerative-Cooling Nozzle with Liquid Oxygen for Hybrid Rocket Engine - Part 1

, 2023
Young Il Park, Wootae Cheon, Seungwon Cha, Sewon Choi, Kyoungjin Woo, Sunghoon Ryu, Donghae Shin   +6 more
openalex   +1 more source

Cold flow testing of laboratory-scale hybrid rocket engine test apparatus [PDF]

, 2021
Shivanand R. Patil
openalex   +1 more source

A Blockchain‐Less Traceability System for Agriculture Using DAG, IPFS, and Serverless Deployments

International Journal of Network Management, Volume 36, Issue 3, May/June 2026.
ABSTRACT Ensuring transparency and integrity in agricultural data management is a critical challenge as the sector increasingly relies on advanced technologies. The primary problem is maintaining data traceability and security throughout the supply chain.
Antonio Villafranca, Igor Tasic, Victor Gallegos, Almudena Gimenez, Jesus Ochoa Rego, Juan Antonio Fernandez, Maria‐Dolores Cano   +6 more
wiley   +1 more source

Advanced Composite Technologies for High‐Performance Sports Equipment: Materials, Manufacturing, and Sustainability Perspectives

Polymers for Advanced Technologies, Volume 37, Issue 5, May 2026.
ABSTRACT Advanced composite materials have become the leading material platform for high‐performance sports equipment, enabling superior strength‐to‐weight performance, stiffness tailoring, and enhanced functional integration compared with conventional materials. This review summarizes state‐of‐the‐art developments across multiple sporting disciplines,
Alhayat Getu Temesgen, Ümit Koç, Jörg Kaufmann, Holger Cebulla, Ercan Aydoğmuş, Hasan Arslanoğlu   +5 more
wiley   +1 more source

Low-temperature tribological properties of Si3N4 ceramic composites incorporating nano/microscale graphene and Si3N4 whisker

Journal of Materials Research and Technology
Si3N4 ceramic bearings have demonstrated significant potential in augmenting the performance of liquid rockets. However, the operational conditions, including reciprocating use, ultra-high-speeds, and high-load impacts, impose more stringent requirements
Fei Chen, Xiaobo Sun, Bin Fang, Ke Yan, Bei Yan   +4 more
doaj   +1 more source

Design of cascaded FOPI-FOPD-BLQG controller tuned with hybrid grasshopper and firefly algorithms for stabilizing cart-inverted pendulum system

Mechanics & Industry
The Cart Inverted Pendulum (CIP) system is a widely studied problem in control theory due to its inherent instability and nonlinearity dynamics, which closely mimic various real-time applications, including segways, robotics, rockets, and missile guiding
Verma Neelam, Valluru Sudarshan K.
doaj   +1 more source

Comment on Albantakis et al. Computing the Integrated Information of a Quantum Mechanism. Entropy 2023, 25, 449. [PDF]

Entropy (Basel), 2023
Rourk C.
europepmc   +1 more source

Screening of metal additives in ABS polymer fuel for enhanced performance in hybrid rocket motors: A computational analysis using CEA

Defence Technology
This study investigates the potential of metal additives in acrylonitrile butadiene styrene (ABS) polymer fuel to enhance hybrid rocket motor (HRM) performance through computational analysis, Chemical Equilibrium with Applications (CEA), software.
Gail Ndlovu, Bilainu Oboirien, Patrick Ndungu   +2 more
doaj   +1 more source