Results 171 to 180 of about 441,091 (198)

Multimodal feature extraction and fusion for determining RGP lens specification base-curve through Pentacam images

Exploration of Digital Health Technologies
Aim: Patients diagnosed with irregular astigmatism often require specific methods of vision correction. Among these, the use of a rigid gas permeable (RGP) lens is considered one of the most effective treatment approaches.
Leyla Ebrahimi, Hadi Veisi, Ebrahim Jafarzadehpour, Sara Hashemi   +3 more
semanticscholar   +1 more source

Advancing LED efficiency through 3D-printed light extraction structures: from design to demonstration.

Optics Express
This study presents an integrated modeling and experimental framework for optimizing light extraction efficiency (LEE) in light-emitting diode (LED) lens design.
Yang Yue, Kevin Chen, Hongyang Zhu, Peifen Zhu   +3 more
semanticscholar   +1 more source

Research on the Effective Scope of Low-permeability Hard Coalbed Coupling and Enhanced Permeability Technology

Architecture Engineering and Science
Due to poor gas permeability, high gas content, and hard coal quality at the JiuLiShan coal mine, gas extraction is difficult, and hydraulic perforation has limited effect.
Yuandong Ding
semanticscholar   +1 more source

Numerical analysis of stress distribution due to upper protective layer mining and its impact on gas extraction

The Physics of Fluids
Pressure-relief gas extraction through the floor directional long boreholes is an advanced and effective gas control technology for the upper protective layer of contiguous coal seams.
Chun Liu, Maolin Li, Jian Cha, Z. Man
semanticscholar   +1 more source

The proton charge radius

Reviews of Modern Physics, 2022
Haiyan Gao, Marc Vanderhaeghen
exaly  

The coordination properties and ionic radius of actinium: A 120-year-old enigma

Coordination Chemistry Reviews, 2021
Gauthier J-P Deblonde, Mavrik Zavarin, Annie B Kersting   +2 more
exaly  

Coupled analysis about multi-factors to the effective influence radius of hydraulic flushing: Application of response surface methodology

, 2016
Xiangguo Kong, E. Wang, Xiaofei Liu, Nan Li, Liang Chen, Junjun Feng, Biao Kong, Dexing Li, Quanlin Liu   +8 more
semanticscholar   +1 more source

Measuring the α-particle charge radius with muonic helium-4 ions

Nature, 2021
Julian J Krauth, Fernando D Amaro, Pedro Amaro   +2 more
exaly  

A measurement of the atomic hydrogen Lamb shift and the proton charge radius

Science, 2019
Nikita Bezginov, Marko Horbatsch, Alain Marsman   +2 more
exaly  

Intracortical remodelling and porosity in the distal radius and post-mortem femurs of women: a cross-sectional study

Lancet, The, 2010
Roger Zebaze, Ali Ghasem-Zadeh, Eleanor J Mackie   +2 more
exaly