Results 21 to 30 of about 465,535 (294)

High-Accuracy On-Site Measurement of Wheel Tread Geometric Parameters by Line-Structured Light Vision Sensor

IEEE Access, 2021
Railway wheels are one of the important parts of railway vehicles, and it is necessary to inspect their status frequently. To measure the wheel tread geometric parameters dynamically and accurately in a train running environment, a line-structured light ...
Yunfeng Ran, Qixin He, Qibo Feng, Jianying Cui   +3 more
doaj   +1 more source

Advanced Progress of Organic Photovoltaics

Energies, 2023
Modern civilization and economic development of humankind have been largely based on the exploitation and utilization of fossil energy [...]
Xinlei Wu, Yuanpeng Zhang, Kaihang Shi, Xiaoling Ma, Fujun Zhang   +4 more
doaj   +1 more source

Investigation on Thermal Degradation Process of Polymer Solar Cells Based on Blend of PBDTTT-C and PC70BM

International Journal of Photoenergy, 2014
The effects of thermal treatment on the photovoltaic performance of conventional and inverted polymer solar cells (PSCs) based on the combination of poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b;4,5-b′]dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thie-no[
Yu Ning, Longfeng Lv, Yunzhang Lu, Aiwei Tang, Yufeng Hu, Zhidong Lou, Feng Teng, Yanbing Hou   +7 more
doaj   +1 more source

Compensation effects in GaN:Mg probed by Raman spectroscopy and photoluminescence measurements [PDF]

, 2013
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Appl. Phys. 113, 103504 (2013) and may be found at https://doi.org/10.1063/1.4794094.Compensation
Bryan, Zachary, Callsen, Gordon, Collazo, Ramón, Hoffmann, Axel, Hoffmann, Marc P., Kirste, Ronny, Kure, Thomas, Nenstiel, Christian, Sitar, Zlatko, Tweedie, James, Wagner, Markus R.   +10 more
core   +1 more source

An Improved Large-Field Microscopic Speckle Interferometry System for Dynamic Displacement Measurement of MEMS

Photonics, 2021
The traditional microscopic speckle interferometer has limited applications in engineering due to its small field of view. In this paper, we propose a large-field microscopic speckle interferometer which embeds two doublet lens groups in the improved ...
Chenjia Gao, Zhan Gao, Yuhao Niu, Xu Wang, Jieming Zhao, Lin Deng   +5 more
doaj   +1 more source

Identification of point defects in HVPE-grown GaN by steady-state and time-resolved photoluminescence [PDF]

, 2015
We have investigated point defects in GaN grown by HVPE by using steady-state and time-resolved photoluminescence (PL). Among the most common PL bands in this material are the red luminescence band with a maximum at 1.8 eV and a zero-phonon line (ZPL) at
Demchenko, Denis O, Helava, H, Makarov, Yu., Reshchikov, Michael A, Usikov, A   +4 more
core   +2 more sources

Hardware Implementation of Improved Banker’s Fixed-Point Rounding Algorithm

IEEE Access
In recent years, FPGA-based convolutional neural networks (CNNs) accelerator has received tremendous research interest, especially in fields such as autonomous driving and robotics.
Peng Yun, Wang Yubing, Zhang Yingxu, Liang Lei, Zhang Jun, Zhang Jianwei, Qin Li, Wang Lijun   +7 more
doaj   +1 more source

Extending the aridity record of the Southwest Kalahari: current problems and future perspectives [PDF]

, 2003
An extensive luminescence-based chronological framework has allowed the reconstruction of expansions and contractions of the Kalahari Desert over the last 50 ka. However, this chronology is largely based on near-surface pits and sediment exposures. These
Ashok K Singhvi, Bateman, Butzer, Cooke, David S.G Thomas, Duller, Eitel, Kohfield, Lancaster, Lawson, Livingstone, Mark D Bateman, Marret, Murray, Murray, Nicholson, Olley, O’Connor, Partridge, Peyron, Prescott, Singhvi, Singhvi, Stokes, Stokes, Stokes, Thomas, Thomas, Thomas   +28 more
core   +1 more source

Digital Shearing Speckle Pattern Interferometry Based on Rochon Prism and Its Application

Applied Sciences, 2019
This paper presents improved digital shearing speckle pattern interferometry based on Rochon Prism. The advantage of this method is that it avoids the shadow noise caused by transmission light, which improves the shearography accuracy.
Xu Wang, Zhan Gao, Chenjia Gao, Jieming Zhao, Yuhao Niu, Zihui Liu, Yuan Zhang, Yuchen Liu   +7 more
doaj   +1 more source

Zinc oxide nanoparticles effectively regulate autophagic cell death by activating autophagosome formation and interfering with their maturation

Particle and Fibre Toxicology, 2020
Background With the development of zinc oxide nanoparticles (ZnO NPs) in the field of nanotechnology, their toxicological effects are attracting increasing attention, and the mechanisms for ZnO NPs neurotoxicity remain obscure.
Zixuan Liu, Xuying Lv, Lei Xu, Xuting Liu, Xiangyu Zhu, Erqun Song, Yang Song   +6 more
doaj   +1 more source