Results 131 to 140 of about 7,425 (303)
In this review, a unified framework of the Sabatier principle is applied to a diverse range of catalytic and electrocatalytic systems for advanced clean energy technologies, with a particular focus on the oxygen reduction reaction (ORR). This approach will guide the design and development of highly active and stable catalysts for fuel cells ...
Wanying Zhang +6 more
wiley +1 more source
Burning Rate Measurement of KNSu Propellant Obtained by Mechanical Press
The potassium nitrate (KNO3)/sucrose (C12H22O11) propellant, known as KNSu, is traditionally used in rocket studies by amateur groups. Performance tests of KNSu, whose composition is 65 wt% KNO3 and 35wt% C12H22O11, cold-manufactured by mechanical press,
Antônio Carlos Foltran +5 more
doaj
ABSTRACT Of the three types of cytoskeleton known in animals—actin, microtubules, and intermediate filaments—only actin and microtubules exist in plants. Both play important roles in cellular shaping, organelle movement, organization of the endomembrane system, and cell signaling.
Norman R. Groves +3 more
wiley +1 more source
Performance of rocket nozzle materials with several solid propellants [PDF]
Erosion resistance and thermal stress cracking tests of rocket nozzle materials with solid ...
Freche, J. C. +2 more
core +1 more source
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Solid propellant rocket motor internal ballistics performance variation analysis, phase 3 [PDF]
Results of research aimed at improving the predictability of off nominal internal ballistics performance of solid propellant rocket motors (SRMs) including thrust imbalance between two SRMs firing in parallel are reported. The potential effects of nozzle
Adams, G. W., Jr. +3 more
core +1 more source
Spin‐Driven Electrocatalysis for Metal–Sulfur Batteries
This review presents a comprehensive overview of spin‐driven electrocatalysis for cathodes and anodes in metal–sulfur batteries, covering the fundamental mechanism, regulation strategies, and the related characterization techniques for tracking these variations. The insightful perspectives and future research directions for spin effects in metal–sulfur
Boyang Song +7 more
wiley +1 more source
Rockets are powered by composite solid propellant, which is a heterogeneous system consisting of solid oxidizer and metallic fuel dispersed in a polymeric fuel binder matrix.
Praveen Prakash Singh +5 more
doaj
Review of solid propellants for space exploration [PDF]
Solid propellants for space vehicles and spacecraft fuel ...
Hendel, F. J.
core +1 more source
A 3D conductive net including HfC(N) conductive nanodomains and in‐situ carbon ribbons was generated within the amorphous SiHfBCN matrix by a new molecular‐level composition and microstructure design strategy, making a smooth and dense polymer‐derived SiHfBCN ceramic coatings exhibits excellent electrical conductivity, wide‐temperature sensing, cycling
Xichao Dong +6 more
wiley +1 more source

