Results 151 to 160 of about 813,317 (386)

Closure to “Discussions of ‘A General Method for Calculating Critical Speeds of Flexible Rotors’” (1946, ASME J. Appl. Mech., 13, pp. A297–A299) [PDF]

, 1946
M. A. Prohl
openalex   +1 more source

Understanding Structural and Compositional Evolution during NMC Cathode Direct Recycling via Solid‐State NMR

Advanced Energy Materials, EarlyView.
Direct recycling end‐of‐life lithium‐ion batteries (LIB) to recover high‐value cathode materials such as LiNixMnyCozO2 (NMC) requires method development and detailed characterization. In this work, the unique capabilities of solid‐state NMR in characterizing changes in local ordering within NMC cathode materials during recycling and upcycling as well ...
Evelyna Wang, Sohyun Park, Hongpeng Gao, Maura Appleberry, Zheng Chen, Tao Wang, Sheng Dai, Cyrus Kirwa, Jaclyn Coyle, John Vaughey, Fulya Dogan   +10 more
wiley   +1 more source

Performance and loads data from a hover test of a 0.658-scale V-22 rotor and wing [PDF]

A hover test of a 0.658-scale model of a V-22 rotor and wing was conducted at the Outdoor Aerodynamic Research Facility at Ames Research Center. The primary objectives of the test were to obtain accurate measurements of the hover performance of the rotor
Betzina, Mark D., Felker, Fort F., Signor, David B., Young, Larry A.   +3 more
core   +1 more source

Alternative Solid‐State Synthesis Route for Highly Fluorinated Disordered Rock‐Salt Cathode Materials for High‐Energy Lithium‐Ion Batteries

Advanced Energy Materials, EarlyView.
This work presents a tailored solid‐state route to enhance DRX fluorination and electrochemical performance. Using unconventional precursors, Li6MnO4, MnF2, and TiO2, prevents Mn‐based intermediates, which do not accommodate fluorines, enabling the formation of highly fluorinated DRX with a composition of Li1.23Mn0.40Ti0.37O2−yFy (y = 0.29–0.34 ...
Venkata Sai Avvaru, Tianyu Li, Gi‐Hyeok Lee, Young‐Woon Byeon, Krishna Prasad Koirala, Otavio Jovino Marques, Bernardine L. D. Rinkel, Yanbao Fu, David Milsted, Seonghun Jeong, Nathan J. Szymanski, Martin Kunz, Finn Babbe, Eunryeol Lee, Vincent Battaglia, Bryan D. McCloskey, Johanna Nelson Weker, Chongmin Wang, Wanli Yang, Raphaële J. Clément, Haegyeom Kim   +20 more
wiley   +1 more source

Discussion: “Electrostatic Shaft Voltage on Steam-Turbine Rotors” (Gruber, J. M., and Hansen, E. F., 1959, ASME J. Eng. Power, 81, pp. 97–106) [PDF]

, 1959
E. Richard Booser
openalex   +2 more sources

Discerning Performance Bottlenecks of State‐of‐the‐Art Narrow Bandgap Organic Solar Cells

Advanced Energy Materials, EarlyView.
This work quantitatively discerns the loss mechanisms of state‐of‐the‐art low‐bandgap organic solar cells based on BTPV‐4X‐eC9 acceptors. Compared to PM6:Y6, geminate recombination of charge transfer (CT) states governs photocurrent losses. This relates to conformational freedom of these acceptors that restricts their aggregation, and also counteracts ...
Atul Shukla, Manasi Pranav, Guorui He, J. Terence Blaskovits, Davide Mascione, Yonglin Cao, Yufei Gong, Drew B. Riley, Julian A. Steele, Eduardo Solano, Alexander Ehm, Mohammad Saeed Shadabroo, Ardalan Armin, Safa Shoaee, Dietrich R. T. Zahn, Yongfang Li, Lei Meng, Felix Lang, Denis Andrienko, Dieter Neher   +19 more
wiley   +1 more source

Numerical analysis of a variable camber rotor blade as a lift control device [PDF]

A new rotor configuration called the variable camber rotor was numerically investigated as a lift control device. This rotor differs from a conventional (baseline) rotor only in the blade aft section.
Awani, A. O., Stroub, R. H.
core   +1 more source

Bulk and Surface Reactivity of LiNi0.5Mn1.5O4 in Contact with (Acidic) Water

Advanced Energy and Sustainability Research, EarlyView.
The comprehensive investigation of the influence of (acidic) water on LiNi0.5Mn1.5O4 as cobalt‐free lithium‐ion battery cathode material reveals that such treatment particularly affects a very thin layer at the particle surface, while the bulk material remains unaffected.
Annika R. Schuer, Matthias Kuenzel, Maider Zarrabeitia, Tobias Eisenmann, Chengping Li, Sylvio Indris, Michael Knapp, Volodymyr Baran, Ralph Gilles, Dorin Geiger, Ute Kaiser, Philipp Scheitenberger, Mika Lindén, Peter Axmann, Margret Wohlfahrt‐Mehrens, Stefano Passerini, Dominic Bresser   +16 more
wiley   +1 more source

Aeroacoustic analysis of main rotor and tail rotor interaction [PDF]

, 2008
The increased restrictions placed on helicopter noise levels over recent decades have encouraged manufacturers to better understand tail rotor noise and its aerodynamic sources.
Brown, R.E., Duraisamy, K., Fletcher, T.M.   +2 more
core   +1 more source

Exactly Restricting the Phenyl Ring Rotation in Metal‐Organic Framework for Ultra‐Sensitive and Specific Ratiometric Fluorescent Sensing of Sarin

Aggregate, EarlyView.
A goal‐oriented MOF design strategy is proposed to realize the ultra‐sensitive and specific detection of sarin/DCP through the rotation restricted emission mechanism. The hydrogen bonding and hydrophobic interaction between the CTTB ligand and DCP efficiently lead to a dramatic change in molecular configuration, significantly enhancing the fluorescence
Cong Lyu, Chuanfang Zhao, Meimei Wang, Jiawen Li, Zhenzhen Cai, Xincun Dou, Baiyi Zu   +6 more
wiley   +1 more source