Results 21 to 30 of about 492,788 (354)
Bio-inspired natural sunlight-pumped lasers [PDF]
New J. Phys. 23, 103015 (2021), 2020 Even though sunlight is by far the most abundant renewable energy source available to humanity, its dilute and variable nature has kept efficient ways to collect, store, and distribute this energy tantalisingly out of reach. Turning the incoherent energy supply provided by the Sun into a coherent laser beam would overcome several of the practical ...
arxiv +1 more source
Applied Rheology, 2001 The Microsoft Excel ‘Solver’ tool is a very simple but powerful procedure, even in the hands of the mathematically disadvantaged. It has very good application for quickly fitting experimental flow-curve data to non-Newtonian flow models with any number ...
Roberts G.P., Barnes H.A., Mackie C.
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Epidemiological study of Vitamin D deficiency among Libyan patients
MRIMS Journal of Health Sciences, 2022 Background: Vitamin D deficiency (VDD) is not only common globally but is more rampant in Libya. Assessment and management of it can help prevent many other conditions and serious diseases. Objective: This stuay aimed to study the prevalence of VDD among
Ahmed Atia, Sundes Arhoma
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Concentrated sunlight for accelerated stability testing of organic photovoltaic materials: Towards decoupling light intensity and temperature [PDF]
Solar Energy Materials and Solar Cells, v. 134, pp. 99-107 (2015), 2014 We have demonstrated OPV accelerated degradation studies using concentrated sunlight, where the atmosphere, temperature and illumination intensity were independently controlled. Testing various schemes for controlling the sample temperature under concentrated sunlight showed that heating of P3HT:PCBM was caused by photons at the absorbed wavelength ...
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Open Chemistry, 2021 In this study, a model to improve the degradability of methylene blue (MB) dye using graphene oxide/TiO2/SiO2 nanocomposite under sunlight irradiation is investigated.
Ahmad Hanan Haj, Alahmad Waed
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High efficient solar photocatalytic carbon nanoparticles
Frontiers in Catalysis, 2022 In the present study, the photocatalytic activity of carbon nanoparticles (CNPs) in the degradation of methylene blue (MB) using sunlight was analyzed. The CNPs were synthesized by solvent-assisted hydrothermal carbonization (HTC) and were characterized ...
Diego Flores-Oña, Andres Fullana
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Spectral analysis of extinguished sunlight [PDF]
New Astron. 8 (2003) 537-548, 2006 SAOZ (Systeme d'Analyse par Observation Zenitale) is a balloon born experiment which determines the column density of several molecular species from the visible spectrum of sunlight. We will use sequence of spectra collected during a sunset to discuss atmospheric extinction, and the nature of the radiation field in the atmosphere.
arxiv +1 more source
Generation of pseudo-sunlight via quantum entangled photons and the interaction with molecules [PDF]
Phys. Rev. Research 2, 023256 (2020), 2019 Light incident upon molecules trigger fundamental processes in diverse systems present in nature. However, under natural conditions, such as sunlight illumination, it is impossible to assign known times for photon arrival owing to continuous pumping, and therefore, the photo-induced processes cannot be easily investigated.
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A Brief History of the Yield Stress
Applied Rheology, 1999 This short article is a summary of a recently published, lengthy review [1] in which the author challenges the often-accepted view that materials have yield stresses, below which no flow takes place.
Barnes Howard A.
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The Mood of the Sunlight: Visualization of the Sunlight Data for Public Art [PDF]
arXiv, 2022 The application of data visualization in public art attracts increasing attention. In this paper, we present the design and implementation of a visualization method for sunlight data collected over a long period of time with an industrial camera. The proposed method makes use of the saturation and value information of collected sunlight image data in ...
arxiv