Results 11 to 20 of about 109,078 (298)

Performance of LED-Based Fluorescence Microscopy to Diagnose Tuberculosis in a Peripheral Health Centre in Nairobi. [PDF]

, 2011
Sputum microscopy is the only tuberculosis (TB) diagnostic available at peripheral levels of care in resource limited countries. Its sensitivity is low, particularly in high HIV prevalence settings. Fluorescence microscopy (FM) can improve performance of
Bonnet, M, Bonte, L, Gagnidze, L, Githui, W, Guérin, P J, Ramsay, A, Varaine, F   +6 more
core   +11 more sources

Study of Postharvest Quality and Antioxidant Capacity of Freshly Cut Amaranth after Blue LED Light Treatment

Plants, 2021
Freshly cut vegetables are susceptible to microbial contamination and oxidation during handling and storage. Hence, light-emitting diode technology can effectively inhibit microbial growth and improve antioxidant enzyme activity.
Siyuan Jin, Zhaoyang Ding, Jing Xie
doaj   +1 more source

Investigation of Quantum Dot Color Filter Micro-LED Display

Photonic Sensors, 2023
In this work, we present the investigation of the quantum dot color filter (QDCF) micro-light emitting diode (micro-LED) display. Green and red quantum dot photoresist (QDPR) materials are patterned into a pixelated array and precisely bonded with an all-
Xuhui Peng, Yang Zeng, Sitao Huo, Zhenyuan Yang, Xiaoping Huang, Qing Zhao   +5 more
doaj   +1 more source

Effects of Light-Emitting Diodes (LEDs) on Growth, Nitrates and Osmoprotectant Content in Microgreens of Aromatic and Medicinal Plants

Horticulturae, 2023
Microgreens are receiving increasing attention due to their high content of bioactive components and their importance to human health. These emerging food products can be obtained from the seeds of different plant species, including aromatic herbs ...
Hamza El Haddaji, Mustapha Akodad, Ali Skalli, Abdelmajid Moumen, Said Bellahcen, Sliman Elhani, Miguel Urrestarazu, Mitja Kolar, Jernej Imperl, Petranka Petrova, Mourad Baghour   +10 more
doaj   +1 more source

Glare by Light Emitting Diode (LED) vehicle traffic signals [PDF]

, 2015
Background: In this paper we analyze devices for traffic signals (traffic lights) with light-emitting diode (LED) technology. Methods: The traditional measurements of luminous intensity were complemented with the luminance analysis of the devices ...
Ixtaina, Pablo Ruben, Marín, Gustavo H., Presso, Matías, Rosales, Nicolás   +3 more
core   +3 more sources

Savings in Cooling Energy with a Thermal Management System for LED Lighting in Office Buildings

Energies, 2015
Light-emitting diode (LED) lighting should be considered for lighting efficiency enhancement, however, waste heat from light-emitting diode (LED) lighting increases the internal cooling load during the summer season.
Byung-Lip Ahn, Ji-Woo Park, Seunghwan Yoo, Jonghun Kim, Seung-Bok Leigh, Cheol-Yong Jang   +5 more
doaj   +1 more source

Investigation of Autostereoscopic Displays Based on Various Display Technologies

Nanomaterials, 2022
The autostereoscopic display is a promising way towards three-dimensional-display technology since it allows humans to perceive stereoscopic images with naked eyes.
Fuhao Chen, Chengfeng Qiu, Zhaojun Liu
doaj   +1 more source

Integrated ultrasonic particle positioning and low excitation light fluorescence imaging [PDF]

, 2013
A compact hybrid system has been developed to position and detect fluorescent micro-particles by combining a Single Photon Avalanche Diode (SPAD) imager with an acoustic manipulator. The detector comprises a SPAD array, light-emitting diode (LED), lenses,
Al-Rawhani, M., Beeley, J., Bernassau, A.L., Cumming, D.R.S.   +3 more
core   +2 more sources

Photoinitiated polymerisation of monolithic stationary phases in polyimide coated capillaries using visible region LEDs [PDF]

, 2008
The spatially controlled synthesis of poly(glycidyl methacrylate-co-ethylene dimethacrylate) monolithic stationary phases in polyimide coated fused silica capillaries by visible light induced radical polymerisation using a three-component initiator and a
Abele, Al-Bokari, Bandari, Beiler, Brett Paull, Brian Lawless, Chatterjee, Chen, Dasgupta, Dominik Heger, Dulay, Eeltink, Gould, Kabatc, McDermott, Michael C. Breadmore, Mirek Macka, Moschou, Murphy, Nie, Nie, Okanda, Petr Klán, Schuster, Silvija Abele, Svec, Throckmorton, Viklund, Zarah Walsh   +28 more
core   +1 more source

Optical nanolithography using a scanning near-field probe with an integrated light source [PDF]

, 2008
An ultracompact near-field optical probe is described that is based on a single, integrated assembly consisting of a gallium nitride (GaN) light-emitting diode (LED), a microlens, and a cantilever assembly containing a hollow pyramidal probe with a ...
Adawi, Ali M., Kingsley, James W., Leggett, Graham J., Lidzey, David G., Ray, Sumon K.   +4 more
core   +1 more source