Results 11 to 20 of about 39,826 (266)

An experimental investigation of a 100-W high-power light-emitting diode array using vapor chamber–based plate

Advances in Mechanical Engineering, 2015
In this study, a compact 100-W input power light-emitting diode array vapor chamber–based plate has been fabricated to investigate the thermal performance.
Ping Zhang, Jianhua Zeng, Xianping Chen, Miao Cai, Jing Xiao, Daoguo Yang   +5 more
doaj   +1 more source

Comparisons among the diagnostic methods used for the detection of extra-pulmonary tuberculosis in Bangladesh

International Journal of Mycobacteriology, 2012
The present study was an attempt to establish a suitable method for the effective diagnosis of extra-pulmonary tuberculosis in Bangladesh. In this regard, detection of Mycobacterium tuberculosis from 390 different extra-pulmonary specimens was performed ...
Saurab Kishore Munshi, Farjana Rahman, S M. Mostofa Kamal, Rashed Noor   +3 more
doaj   +1 more source

Progress of display performances: AR, VR, QLED, and OLED

Journal of Information Display, 2020
In 2019, the device performances of the display technologies were largely advanced by the development of new materials and of the device architecture and driving scheme.
Ho Jin Jang, Jun Yeob Lee, Jaeyun Kim, Jeonghun Kwak, Jae-Hyeung Park   +4 more
doaj   +1 more source

Effects of Microwave and Light Emitting Diode as Disinfection Methods on the Dimensional Stability of Polymethyl Methacrylate and Polyamide Denture Base Resin

Journal of Islamic International Medical College, 2022
Objective: To compare the effects of microwave and light emitting diode disinfection on the dimensional stability of two denture base materials; polymethyl methacrylate and polyamide.
Hina rehman, muhammad raza, Amjad Hanif, mehreen Imran, Zia ur Rehman Khaleel, salman khan, Nida saeed, zudia riaz   +7 more
doaj  

Standardization of phototherapy for neonatal hyperbilirubinemia using multiple-wavelength irradiance integration

Pediatrics and Neonatology, 2020
Background: Phototherapy with radiation of 460–490 nm wavelengths provides the most potent therapeutic effect for neonatal jaundice. However, the efficacy of phototherapy has been estimated using single-wavelength detectors with sensitivity at ...
Shin Kato, Osuke Iwata, Yasumasa Yamada, Hiroki Kakita, Takaharu Yamada, Hideyuki Nakashima, Tokio Sugiura, Satoshi Suzuki, Hajime Togari   +8 more
doaj   +1 more source

Coherence properties of different light sources and their effect on the image sharpness and speckle of holographic displays

Scientific Reports, 2017
Coherence properties of different light sources and how they affect the image quality of holographic display are investigated. Temporal coherence is related to the intrinsic spectrum bandwidth of the light source, while spatial coherence can be affected ...
Yuanbo Deng, Daping Chu
doaj   +1 more source

Sifat Fisika Material Pembentuk OLED: Sebuah Telaah Ilmiah

Techne, 2018
OLED tersusun dari lapisan tipis material semikonduktor organik yang disisipkan di antara dua elektroda. Pada saat diberikan tegangan maka elektron akan diinjeksikan dari katode menuju material material semikonduktor.
Lukas Bambang Setyawan
doaj   +1 more source

Production of Chlorella vulgaris Biomass in Tubular Photobioreactors during Different Culture Conditions

Applied Sciences, 2021
Biomass of microalgae and the components contained in their cells can be used for the production of heat, electricity, and biofuels. The aim of the presented study was to determine the optimal conditions that will be the most favorable for the production
Patryk Ratomski, Małgorzata Hawrot-Paw
doaj   +1 more source

Machine vision based in-process light-emitting diode chip mounting system

Measurement + Control, 2018
Background: In this study, a machine vision–based method was developed for automated in-process light-emitting diode chip mounting lines with position uncertainty.
Chao-Ching Ho, You-Min Chen, Po-Chieh Li
doaj   +1 more source

Luminescence enhancement by symmetry-breaking in the excited state in radical organic light-emitting diodes

Communications Chemistry, 2023
Organic π-conjugated radicals have recently joined the ranks of high-efficiency light-emitting materials; however, their light-emission mechanism is still a matter of debate.
Satoru Ohisa, Satoshi Honda
doaj   +1 more source