Results 61 to 70 of about 7,091 (256)

Flow Characteristics and Loss Mechanism of Tip Leakage Flow in Mining Contra-Rotating Axial Flow Fan

Applied Sciences
Tip leakage flow interacts with the mainstream, impacting the energy transmission process within the impeller of the fan and causing a significant flow loss.
Yongping Chen, Ronghua Liu, Wenqing Peng, Shiqiang Chen   +3 more
doaj   +1 more source

Powering the Future: A Cobalt‐Based Catalyst for Longer‐Lasting Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A novel N‐doped graphitic shell‐encapsulated Co catalyst reveals superior bifunctional ORR/OER activity in alkaline media, empowering outstanding liquid and quasi‐solid‐state ZAB activity. The system delivers long‐term durability, a peak power density of 127 mW cm−2 and successfully powers an LED and a mini fan.
Manami Banerjee, Peng Ren, Greesh Kumar, Lucie Lindenbeck, Byoung Joon Park, Anna Rokicińska, Piotr Kuśtrowski, Adam Slabon, Francesco Ciucci, Ramendra Sundar Dey, Shoubhik Das   +10 more
wiley   +1 more source

Theory of commensurable magnetic structures in holmium

, 1996
The tendency for the period of the helically ordered moments in holmium to lock into values which are commensurable with the lattice is studied theoretically as a function of temperature and magnetic field.
A. B. Harris, A. M. Venter, A. M. Venter, A. R. Mackintosh, A. R. Mackintosh, A. V. Andrianov, A. V. Andrianov, C. C. Larsen, C. Patterson, D. A. Jehan, D. A. Jehan, D. A. Tindall, D. A. Tindall, D. A. Tindall, D. A. Tindall, D. A. Tindall, D. A. Tindall, D. A. Tindall, D. F. McMorrow, D. Gibbs, D. R. Noakes, F. Seno, F. Willis, G. Helgesen, G. Helgesen, G. P. Felcher, H. Lin, J. A. Simpson, J. A. Simpson, J. Bohr, J. Jensen, J. Jensen, J. Jensen, J. Jensen, J. Jensen, J. Smith, Jens Jensen, K. A. McEwen, K. Sasaki, K. Yosida, M. E. Fisher, M. E. Fisher, M. J. Pechan, M. L. Plumer, M. O. Steinitz, M. O. Steinitz, M. O. Steinitz, M. W. Stringfellow, P. Bak, P. Bak, R. A. Cowley, R. A. Cowley, R. A. Cowley, R. J. Elliott, R. M. Nicklow, S. Bates, T. Nagamiya, W. C. Koehler, W. C. Koehler, W. Selke   +59 more
core   +2 more sources

Numerical analysis of noise characteristics of a contra-rotating axial fan

IOP Conference Series: Earth and Environmental Science, 2012
Numerical analysis of the flow-field in a contra-rotating fan has been performed by using the CFD method. The LES technique is applied to simulate the 3D unsteady whole flow-field of the fan. Several monitoring faces are specified in the flow-field between the two impellers.
F Fang, Q G Chen
openaire   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Unified Assessment of Open and Ducted Propulsors

Aerospace
This paper reconciles the assessment of fan and propeller performance by deriving common metrics that describe their design and operational characteristics and applies them to real-world design examples.
Rainer Schnell, Maximilian Mennicken
doaj   +1 more source

Numerical study on parametrical design of long shrouded contra-rotating propulsion system in hovering [PDF]

, 2011
The parametrical study of Shrouded Contra-rotating Rotor was done in this paper based on 2D axisymmetric simulations. The calculations were made with an actuator disk as double rotor model.
Barènes, Roger, Gressier, Jérémie, Grondin, Gilles, Huo, Chao   +3 more
core  

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

Kesan penggunaan prosedur pembelajaran kawalan kendiri (self-regulated learning) terhadap pencapaian akademik, kemahiran meta kognitif dan motivasi pelajar politeknik : kajian kes [PDF]

, 2019
Pembelajaran Kawalan Kendiri (PKK) merupakan satu strategi pembelajaran efektif yang membantu pelajar untuk kompeten dan mempunyai autonomi dalam diri.
Sahdan, Shafizza
core  

Toughening β‐Ga2O3 via Mechanically Seeded Dislocations

Advanced Functional Materials, EarlyView.
β‐Ga2O3 is promising for next‐generation semiconductors but its brittleness limits flexible and high‐precision applications. Here, mechanically seeded dislocations introduced by surface deformation improved damage tolerance in (001) β‐Ga2O3. Nanoindentation and characterization show dislocations suppress cleavage cracks by enabling stable plastic ...
Zanlin Cheng, Jiawen Zhang, Peng Gao, Guosong Zeng, Xufei Fang, Wenjun Lu   +5 more
wiley   +1 more source