Results 91 to 100 of about 6,294 (295)

Core-cladding-like phosphor ceramic wafer: A path to ultrahigh luminance

Journal of Advanced Ceramics
The utilization of blue lasers to excite phosphor materials holds great potential for the development of high-brightness laser-driven light sources.
Yifeng Lai, Jiaochun Zheng, Zhiqi Zhang, Gang Zhong, Shuxing Li, Rong-Jun Xie   +5 more
doaj   +1 more source

Simulation of lighting characteristics of pulse discharge in cesium vapor [PDF]

E3S Web of Conferences
Mathematical modeling of characteristics of intense light source on the basis of high pressure pulse discharge in cesium vapor is performed. The investigated discharge is realized in a long ceramic tube from Al2O3 with an internal diameter of 5 mm.
Lapshin Vladimir
doaj   +1 more source

Revolutionizing Healthcare With Paper‐Based Nucleic Acid Testing

Exploration, EarlyView.
This work summarizes strategies to enhance paper‐based devices for nucleic acid testing. Key approaches include optimizing paper platforms, improving nucleic acid amplification, and refining labeling/signaling methods. These advancements aim to boost sensitivity, speed, and usability, making paper‐based diagnostics more effective for point‐of‐care ...
Hong Zhang, Yi Yang, Heng Li, Xiaolin Hu, Hui Xiao, Dou Wang, Sergio Benardini, Wei Gu, Yang Luo   +8 more
wiley   +1 more source

Calculating luminous flux and lighting levels for domesticated mammals and birds

, 2008
This paper considers whether photometric calculations using standard human spectral sensitivity data are satisfactory for applications with other species or whether it would be worthwhile to use bespoke spectral sensitivity functions for each species or ...
Saunders, J E, C.M. Wathes, Wathes, C M, Jarvis, J R, Wathes, C.M., Saunders, J.E., City, Jarvis, J., J.E. Saunders, J.R. Jarvis   +9 more
core   +1 more source

Experimental and Numerical Investigation of Cedar Façade Flame Spread With Respect to Sidewall

Fire and Materials, EarlyView.
ABSTRACT In response to growing energy conservation and carbon neutrality efforts, façade systems incorporating wooden materials have attracted increasing attention, which in turn raises concerns about their combustibility. This study presents a combined experimental and numerical investigation of flame spread along cedar façades.
Xukun Sun, Hideki Yoshioka, Takafumi Noguchi, Yuhei Nishio, Manabu Kanematsu, Biao Zhou, Mingwei Xu   +6 more
wiley   +1 more source

Edible Antifungal Coatings Based on Litchi Chinensis Seed Starch Enriched With Pericarp Procyanidins for the Postharvest Preservation of Strawberries

Food Chemistry International, EarlyView.
Lychee starch coatings enriched with procyanidins showed strong antifungal activity and effectively preserved strawberry quality postharvest, reducing weight loss, decay, and senescence. This highlights their potential as a sustainable natural alternative for shelf‐life extension and fungal control in fresh produce.
Guillermo Castillo‐Olvera, José Sandoval‐Cortes, Juan A. Ascacio‐Valdes, Olga B. Álvarez‐Pérez, Jorge E. Wong‐Paz, María L. Flores López, Ahmet Yemenicioğlu, Cristóbal N. Aguilar   +7 more
wiley   +1 more source

Optimising the Eco‐Friendly Extraction of Carotenoids From Gac Fruit: A Sustainable Solution for Natural Red Food Colourants

Food Chemistry International, EarlyView.
Gac fruit's high carotenoid content, especially in the aril, makes it an excellent natural red pigment source for food applications, offering a safer alternative to synthetic dyes. Ethanol extraction achieved the highest overall pigment recovery (89.53%), whereas ethyl lactate extraction yielded the highest levels of total carotenoids, β‐carotene ...
N. Netravati, S. Gomez, B. Pathrose, A. Suma, J. Hosamani   +4 more
wiley   +1 more source

VEHICULAR ADAPTIVE OPTICAL SYSTEMS NON-REPLACEABLE LIGHT SOURCES SECONDARY OPTICS CALCULATION METHOD

Приборы и методы измерений, 2015
A new method to calculate a single LED-based non-interchangeable light source secondary optics for vehicle adaptive optical systems is proposed, said method being based on partial luminous flux cumulative addition.
S. P. Sernov, D. V. Balokhonov, T. V. Kolontaeva, A. A. Zhuravok   +3 more
doaj  

Spectral and photopic studies for high intensity discharge (HID) lamps

International Journal of Metrology and Quality Engineering, 2015
Outdoor lighting sources such as High Intensity Discharge lamps (HID) are common in these days. This research is focusing on the relation between the spectral power distribution and luminous efficiency function V(λ), which describes ...
Abd-Elmageed A.-E.A., El-Moghazy E. M.
doaj   +1 more source

Visible Light Positioning Under Luminous Flux Degradation of LEDs

IEEE Transactions on Aerospace and Electronic Systems
The position estimation problem based on received power measurements is investigated for visible light systems in the presence of luminous flux degradation of light emitting diodes (LEDs). When the receiver is unaware of this degradation and performs position estimation accordingly, there exists a mismatch between the true model and the assumed model ...
Issifu Iddrisu, Sinan Gezici
openaire   +3 more sources