Academic literature on the topic 'Method of using light flux'

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Journal articles on the topic "Method of using light flux"

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Maruyama, Yuki, Chihiro Izawa, and Tomoaki Watanabe. "Synthesis of by the Flux Method." ISRN Materials Science 2012 (September 26, 2012): 1–5. http://dx.doi.org/10.5402/2012/170362.

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has been successfully synthesized using Bi2O3–B2O3 eutectic flux. In particular, we succeeded in synthesizing a low-temperature-phase crystal (α-) at 1073 K as well as high-temperature-phase crystal (β-). The morphology of α- and β- particles prepared by the flux method is a euhedral crystal. In contrast, the morphology of particles prepared by solid state reaction differs: α- is aggregated and β- is necked. Ultraviolet-visible diffuse reflectance spectra indicate that the absorption edge is at a longer wavelength for β- than for α- with β- absorbing light of wavelengths up to nearly 400 nm.
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Jati, A. D., V. S. H. Sujoto, Sutijan, H. T. B. M. Petrus, and P. Mulyono. "Lithium Extraction from Geothermal Brine Using Electrodialysis Method." IOP Conference Series: Earth and Environmental Science 1233, no. 1 (2023): 012018. http://dx.doi.org/10.1088/1755-1315/1233/1/012018.

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Abstract The global market share of electric vehicles is expected to increase significantly. The lithium-ion battery is one type of battery that can power electric vehicles because light, inexpensive, has a high energy density, and has a long service life. Lithium may be obtained economically from hard rock ores and brines. Indonesia has a huge geothermal potential and lithium concentration in geothermal brine can reach 70 mg L−1. With the high concentration of lithium in brine, this is a great opportunity for Indonesia to produce lithium independently. The separation of lithium from brine can
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MISHEV, A., S. MAVRODIEV, and J. STAMENOV. "GAMMA RAYS STUDIES BASED ON ATMOSPHERIC CHERENKOV TECHNIQUE AT HIGH MOUNTAIN ALTITUDE." International Journal of Modern Physics A 20, no. 29 (2005): 7016–19. http://dx.doi.org/10.1142/s0217751x05030727.

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We present a new method for ground based gamma ray astronomy based only on atmospheric Cherenkov light flux analysis. The Cherenkov light flux densities in extensive air showers initiated by different primaries are simulated in the energy range 100 GeV – 100 PeV for different primaries using the CORSIKA 6.003 code at (536 g/cm2). An approximation of lateral distribution of Cherenkov light flux densities in EAS is obtained using a nonlinear fit such as Breit-Wigner. The simulated and reconstructed events are compared and the accuracy in energy and primary mass reconstruction are obtained.
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Du, Linfeng, Paul Ruchhoeft, Demetre J. Economou, and Vincent M. Donnelly. "Absolute measurement of vacuum ultraviolet photon flux in an inductively coupled plasma using a Au thin film." Journal of Vacuum Science & Technology B 40, no. 2 (2022): 022206. http://dx.doi.org/10.1116/6.0001709.

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A new method for absolute measurement of the vacuum ultraviolet (VUV) photon flux at the edge of a plasma is described. The light produced by the plasma was allowed to strike a negatively biased, gold-coated copper substrate remote from the plasma. The resulting photoelectron emission current was measured, and the absolute photon flux was then found from the known photoelectron yield of Au. The method was used to quantify the amount of VUV light produced by an Ar/He inductively coupled plasma (ICP). Strong emissions at 104.82 and 106.67 nm, corresponding to the 1s2 and 1s4 resonant states of A
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Yuan, Renmin, Tao Luo, Jianning Sun, Hao Liu, Yunfei Fu, and Zhien Wang. "A new method for estimating aerosol mass flux in the urban surface layer using LAS technology." Atmospheric Measurement Techniques 9, no. 4 (2016): 1925–37. http://dx.doi.org/10.5194/amt-9-1925-2016.

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Abstract. Atmospheric aerosol greatly influences human health and the natural environment, as well as the weather and climate system. Therefore, atmospheric aerosol has attracted significant attention from society. Despite consistent research efforts, there are still uncertainties in understanding its effects due to poor knowledge about aerosol vertical transport caused by the limited measurement capabilities of aerosol mass vertical transport flux. In this paper, a new method for measuring atmospheric aerosol vertical transport flux is developed based on the similarity theory of surface layer
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Parretta, Antonio, Andrea Antonini, Maria Angela Butturi, et al. "Optical Methods for Indoor Characterization of Small-Size Solar Concentrators Prototypes." Advances in Science and Technology 74 (October 2010): 196–204. http://dx.doi.org/10.4028/www.scientific.net/ast.74.196.

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The light collection properties of different types of solar concentrators have been investigated by applying conventional and innovative methods of characterization [1, 2]. Four types of optical methods were applied: i) a “direct” method using a laser beam as light source; ii) a “direct” method using a parallel beam simulating the direct component of solar light; iii) a “direct” integral method using a lambertian light source simulating the diffuse component of solar light; iv) an “inverse” method using a lambertian light source applied at the receiver side, thereby reversing the light path. T
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Ilinsky, R. "Numerical simulation of light diffraction at an edge using geometric optics methods." Computer Optics 49, no. 1 (2025): 60–66. https://doi.org/10.18287/2412-6179-co-1394.

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A mathematical model is proposed for the spatial distribution of a radiation flux that occurs when a plane wave is diffracted at an edge. In this model, the spatial distribution of the radiation flux is described by rays with the radiation fluxes strung on them. A feature of the proposed model is that the radiation fluxes strung on the rays are added algebraically.
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Kyomen, Toru, Ryuta Motani, and Minoru Hanaya. "Effect of B2O3 or SiO2 Fluxes on Morphology and Size of Pr-Doped CaTiO3 Phosphor Particles and on their Photoluminescence Properties." Key Engineering Materials 497 (December 2011): 31–37. http://dx.doi.org/10.4028/www.scientific.net/kem.497.31.

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Powder of Pr-doped CaTiO3 red phosphor was prepared at 1473 K by a conventional solid-state reaction method with addition of B2O3 or SiO2 as a flux. Primary particle sizes of the prepared samples were increased by using B2O3 flux but decreased by using SiO2 flux. Clear planes, edges, or steps were observed on surfaces of the primary particles. The intensity of photoluminescence induced by irradiation of light with a wavelength longer than ∼350 nm was enhanced about three times by using B2O3 flux. The intensity of photoluminescence induced by irradiation of light with a wavelength shorter than
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Springer, Ofer M., and Eran O. Ofek. "Measuring time delays – I. Using a flux time series that is a linear combination of time-shifted light curves." Monthly Notices of the Royal Astronomical Society 506, no. 1 (2021): 864–76. http://dx.doi.org/10.1093/mnras/stab1600.

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ABSTRACT Several phenomena in astrophysics generate light curves with time delays. Among these are reverberation mapping and lensed quasars. In these systems, the measurement of the time delay is complicated by the fact that the delayed components are unresolved and that the light curves are generated from a stochastic process. We derive the likelihood function of the observations given a model of either a combination of time-delayed light curves or a single light curve. This likelihood function is different from the auto-correlation-function-based investigated by previous studies. We demonstr
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Lee, Sang-Deok, In-Kyoung Hong, Hyung-Kwon Yoon, Young-Bin Jung, Woo-Young Kim, and Seung-Won Han. "Predicting greenhouse daily light integral using photosynthetic photon flux density and finite difference method." Computers and Electronics in Agriculture 202 (November 2022): 107417. http://dx.doi.org/10.1016/j.compag.2022.107417.

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Dissertations / Theses on the topic "Method of using light flux"

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Цубера, Павло Михайлович, та Pavlo Tsubera. "Розробка проекту архітектурно-ландшафтного освітлення частини вулиці Кардинала Сліпого". Master's thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2019. http://elartu.tntu.edu.ua/handle/lib/29683.

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In the diploma paper the results of theoretical researches for solving the scientific and technical task, which consists in substantiating the choice, development of the project and analysis of the work of the system of architectural and landscape lighting of one of the streets of Ternopil in order to increase its operational performance.<br>У дипломній роботі приведено результати теоретичних досліджень для вирішення науково-технічного завдання, яке полягає в обґрунтуванні вибору, розробці проекту та аналізі роботи системи архітектурно-ландшафтного освітлення однієї з вулиць м. Тернополя з мет
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Georghiou, George Elia. "Gas discharge modelling using the finite-element flux-corrected transport method." Thesis, University of Cambridge, 2000. https://www.repository.cam.ac.uk/handle/1810/251727.

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Bezuidenhout, Johannes Jurie. "Convective heat flux determination using surface temperature history measurements and an inverse calculation method." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/35706.

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Effective gages to measure skin friction and heat transfer have been established over decades. One of the most important criteria in designing such a gage is the physical size of the gage to minimise the interference of the flow, as well as the mass of these devices. The combined measurement of skin friction and heat flux using one single gage on the other hand, present unique opportunities and with it, unique technical problems. <P> The objective of this study is therefore to develop a cost-effective single gage that can be used to measure both skin friction and heat flux. The method pro
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Dunbar, Tyrone. "An optimal inverse method using doppler lidar measurements to estimate the surface sensible heat flux." Thesis, University of Reading, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558718.

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There is a growing need for measurements of surface fluxes which are rep- resentative of large, heterogenous surfaces, for example urban areas. This requires an instrument which makes measurements that have a large source area, but the source area of measurements made by traditional, surface- based in situ instruments are generally small compared to the surface area required. A solution to this problem is to use a remote sensing instru- ment, such as a Doppler lidar, which is able to make measurements with a potential source area of the order of 10s of km2. We describe a novel technique, in wh
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Westergren, Erik. "Heat Flux Measurement using Infrared Thermography : The development and validation of a novel measurement method." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-143420.

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Radpour, Houtan. "Diel and monthly observations of plant mediated fluxes of methane, carbon dioxide and nitrous oxide from lake Följesjön in Sweden using static chamber method." Thesis, Linköpings universitet, Filosofiska fakulteten, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-99571.

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Aquatic plants or macrophytes are known as conduits of Methane (CH4), Carbon dioxide (CO2) and Nitrous oxide (N2O) which contribute to the total fluxes of the Greenhouse gases emissions from lakes. Recent studies emphasized that the knowledge on plant mediated emissions calls for more systematic and comparative data especially in the areas of spatial and temporal variability. In this study I measured diel (24 hour) and diurnal(  daily hours only) plant mediated fluxes during four sampling sessions using chamber method from a  Swedish lake in summer 2012. The measurements were conducted on two
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Alam, Mohammad Anzar. "Online optical method for real-time surface measurement using line-of-light triangulation." Doctoral thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-20449.

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Real time paper surface-web measurement is one of the challenging research fields. The traditional laboratory method has many limitations and is unable to measure the entire tambour during the manufacturing process. It has been necessary to develop an online technique that could measure the surface topography in real time. An optical technique was developed, based on laser triangulation, and is applied to develop a new prototype device, which characterizes high speed paper-web surfaces over a wide scale of spatial wavelengths spectrum and computes the surface roughness in real time. The used m
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Blasiak, Thomas C. "Modeling holographic grating imaging systems using the angular spectrum propagation method /." Link to online version, 2006. https://ritdml.rit.edu/dspace/handle/1850/2294.

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Ravikumar, Devaki. "2D Compressible Viscous Flow Computations Using Acoustic Flux Vector Splitting (AFVS) Scheme." Thesis, Indian Institute of Science, 2001. https://etd.iisc.ac.in/handle/2005/277.

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The present work deals with the extension of Acoustic Flux Vector Splitting (AFVS) scheme for the Compressible Viscous flow computations. Accurate viscous flow computations require much finer grids with adequate clustering of grid points in certain regions. Viscous flow computations are performed on unstructured triangulated grids. Solving Navier-Stokes equations involves the inviscid Euler part and the viscous part. The inviscid part of the fluxes are computed using the Acoustic Flux Vector Splitting scheme and the viscous part which is diffusive in nature does not require upwinding and is ta
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Ravikumar, Devaki. "2D Compressible Viscous Flow Computations Using Acoustic Flux Vector Splitting (AFVS) Scheme." Thesis, Indian Institute of Science, 2001. http://hdl.handle.net/2005/277.

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The present work deals with the extension of Acoustic Flux Vector Splitting (AFVS) scheme for the Compressible Viscous flow computations. Accurate viscous flow computations require much finer grids with adequate clustering of grid points in certain regions. Viscous flow computations are performed on unstructured triangulated grids. Solving Navier-Stokes equations involves the inviscid Euler part and the viscous part. The inviscid part of the fluxes are computed using the Acoustic Flux Vector Splitting scheme and the viscous part which is diffusive in nature does not require upwinding and is ta
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Books on the topic "Method of using light flux"

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IESNA Testing Procedures Committee. Photometry of Light Sources Subcommittee. and Illuminating Engineering Society of North America., eds. IESNA approved method for total luminous flux measurement of lamps using an integrating sphere photometer. IES, 2007.

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Pramote, Dechaumphai, Wieting A. R, and Langley Research Center, eds. Thermal-structural finite element analysis using linear flux formulation. National Aeronautics and Space Administration, Langley Research Center, 1990.

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Pramote, Dechaumphai, Wieting A. R, and Langley Research Center, eds. Thermal-structural finite element analysis using linear flux formulation. National Aeronautics and Space Administration, Langley Research Center, 1990.

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Jiang, Chunxu. Stability analysis of light gauge steel members using the finite element method and the generalized beam theory. University of Salford, 1994.

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Frazer, G. W. A method for estimating canopy openness, effective leaf area index, and photosynthetically active photon flux density using hemispherical photography and computerized image analysis techniques. Pacific Forestry Centre, 1997.

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Wright, A. G. Measurement of low light flux. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199565092.003.0007.

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There are three experimental methods for quantifying the flux of light incident on a photocathode: counting the anode output pulses initiated by photoelectrons—known as photon counting; measuring the DC current flowing at the anode—referred to as analogue detection, or charge integration; and determining the rms noise in the anode current—known as shot noise power detection. The statistical performances of the three methods, based on weighting factors, are compared, revealing the theoretical superiority of the photon-counting method. Optimal time allocation between signal and background measur
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Thermal-structural finite element analysis using linear flux formulation. National Aeronautics and Space Administration, Langley Research Center, 1990.

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Light, Sound, and Waves Science Fair Projects, Using the Scientific Method. Enslow Publishing, LLC, 2010.

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Robert, Gardner. Light, Sound, and Waves Science Fair Projects, Using the Scientific Method. Enslow Publishing, LLC, 2010.

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Light, Sound, and Waves Science Fair Projects, Using the Scientific Method. Enslow Publishing, LLC, 2010.

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Book chapters on the topic "Method of using light flux"

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Peterson, Ray D. "A Rapid Method of Determining Salt Flux Melting Point and Composition." In Light Metals 2020. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36408-3_151.

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Colomb, Tristan, Pia Dahlgren, Etienne Cuche, Didier Beghuin, and C. Depeursinge. "A Method for Polarisation Imaging Using Digital Holography." In Interferometry in Speckle Light. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-57323-1_28.

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Turhan, Seval, Betül Usta, Yücel Şahin, and Oktay Uysal. "Determination of Oxalate Ion in Bayer Liquor Using Electrochemical Method." In Light Metals 2011. Springer International Publishing, 2011. http://dx.doi.org/10.1007/978-3-319-48160-9_38.

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Turhan, Seval, Betül Usta, Yücel Şahin, and Oktay Uysal. "Determination of Oxalate Ion in Bayer Liquor Using Electrochemical Method." In Light Metals 2011. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118061992.ch38.

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Ting'an, Zhang, Zhu Xiaofeng, Lv Guozhi, et al. "Calcification-Carbonation Method for Alumina Production by Using Low-Grade Bauxite." In Light Metals 2013. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118663189.ch41.

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Ting’an, Zhang, Zhu Xiaofeng, Lv Guozhi, et al. "Calcification - Carbonation Method for Alumina Production by Using Low-Grade Bauxite." In Light Metals 2013. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-65136-1_41.

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John, Manu M., Rijo Jacob Thomas, and K. A. Shafi. "Emissivity Measurement Using Heat Flux Method at Cryogenic Temperatures." In Advances in Engineering Research. Atlantis Press International BV, 2025. https://doi.org/10.2991/978-94-6463-662-8_68.

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Taha, G. M., Ahmed S. Aadli, and A. A. Ebnalwaled. "Recovery of Aluminium Metal Using Ultrasonic Technique and Production of Al–Si Hypereutectic Alloys from 6063 Alloy’s Black Dross Using Silicon Lumps and Flux." In Light Metals 2020. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36408-3_152.

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Hassan Ali, Mohamed I., Saeed Alshehhi, and Cynthia Belt. "Aluminum Holding Furnace Optimal Design Using the CFD Method and Factorial Approach." In Light Metals 2019. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05864-7_141.

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Gagnon, Mathieu, Patrice Goulet, Richard Beeler, Donald Ziegler, and Mario Fafard. "Optimization of the Cathode Collector Bar with a Copper Insert Using Finite Element Method." In Light Metals 2013. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118663189.ch106.

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Conference papers on the topic "Method of using light flux"

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Scott, Elaine P., Paul Robinson, and Thomas E. Diller. "Estimation of Blood Perfusion Using a Minimally Invasive Blood Perfusion Probe." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1336.

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Abstract This work is part of an ongoing research effort in which parameter estimation techniques have been utilized in the noninvasive measurement of blood perfusion using measurements from a new surface probe. The key element of the probe is a sensor which provides time-resolved signals representing heat flux and temperature. The probe incorporates a thin sensor, which is placed in contact with the tissue. For safety reasons no electric power or heating is applied to the probe; its low level signals are generated by the small temperature difference produced by air cooling. The probe is place
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Patkar, Abhishek, Dehong Liu, Yebin Wang, and Kamal Youcef Toumi. "Magnetic Flux Map Acquisition Using a Compressed Sensing Method." In 2024 IEEE 19th Conference on Industrial Electronics and Applications (ICIEA). IEEE, 2024. http://dx.doi.org/10.1109/iciea61579.2024.10665180.

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Dean, Frank W. H., Mark J. Stockdale, Andrew D. Witty, and Alex C. Zanre. "Multipoint Flux Monitoring by the Hydrogen Collection Method Using a New Wide Temperature Range Flux Measurement Probe." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09694.

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Abstract The hydrogen collection method is used widely to measure hydrogen flux in various oil processing environments. The inherent advantages are the method's non-intrusivity, ease of application, speed and dynamic range of measurement, and tolerance of variable steel temperature and curvature. In this paper we present preliminary measurements from a newly developed device based on the hydrogen collection method of flux measurement, which enables readings to be taken from up to four external probes sequentially, within a short time cycle. Prospective applications of the new tool will be disc
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Arakawa, Souya, Shigeo Morimoto, Yukinori Inoue, and Masayuki Sanada. "Online MTPA Angle Search Method Using Flux Linkage Plane Estimation of SynRM." In 2024 27th International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2024. https://doi.org/10.23919/icems60997.2024.10921043.

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Takahashi, Y., S. Kohko, Y. Sagane, et al. "PROPOSAL OF MAINTENANCE MANAGEMENT METHOD FOR ROAD LIGHTING FACILITIES USING UNMANNED AERIAL VEHICLES." In CIE 2023 Conference. International Commission on Illumination, CIE, 2023. http://dx.doi.org/10.25039/x50.2023.po143.

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In recent years, light-emitting diode (LED) lamps have become the mainstream light source for road lighting because of their high efficiency and long life. Unlike high-intensity discharge lamps, LEDs do not stop lighting at the end of their service life but continue emitting light with a decreased luminous flux. For this reason, it is important for road lighting that uses LEDs to regularly check if the road surface luminance is maintained according to the relevant performance index. If measurement of road surface illuminance using an unmanned aerial vehicle (UAV) is realized, the time required
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Yuqin Zong, C., and Cameron Miller. "ACCURATE MEASUREMENT OF ULTRAVIOLET LIGHT-EMITTING DIODES." In CIE 2021 Conference. International Commission on Illumination, CIE, 2021. http://dx.doi.org/10.25039/x48.2021.op43.

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We have developed a new calibration capability for 200 nm to 400 nm ultraviolet light-emitting diodes (UV LEDs) using a Type D gonio-spectroradiometer. The recently-introduced mean differential continuous pulse (M-DCP) method is used to overcome the measurement difficulty associated with the initial forward voltage, VF, anomaly of a UV LED, which makes it impossible to use VF to infer junction temperature, TJ, during pulsed operation. The new measurement facility was validated indirectly by comparing the measured total luminous flux of a white LED with that measured using the NIST’s 2.5 m abso
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Yellowhair, Julius, and Clifford K. Ho. "On-Sun Evaluation of the PHLUX Method for Heliostat Beam Characterization." In ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/es2016-59409.

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Flux distributions from solar field collectors are typically evaluated using a beam characterization system, which consists of a digital camera with neutral density filters, flux gauge or calorimeter, and water-cooled Lambertian target panel. The pixels in camera image of the flux distribution are scaled by the flux peak value measured with the flux gauge or the total power value measured with the calorimeter. An alternative method, called PHLUX developed at Sandia National Laboratories, can serve the same purpose using a digital camera but without auxiliary instrumentation. The only additiona
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Green, W., B. Kerff, V. Jacobs, D. Dohogne, and F. Duerr. "REDUCING STRAY LIGHT IN OUTDOOR LUMINAIRES." In CIE 2023 Conference. International Commission on Illumination, CIE, 2023. http://dx.doi.org/10.25039/x50.2023.po056.

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Light pollution is increasing at a rate between 6-10% each year worldwide, faster than population growth or GDP increase. This suggests that the growing market for decorative outdoor luminaires contributes to the problem. Stray light in outdoor LED luminaires is analysed using the FRED raytracing software. Fresnel reflections are shown to be a large contributor to upward light, especially from protective plastic covers. Additionally, up to 0.5% of the lamp flux may be scattered due to these covers. This study shows how this light escapes as ULOR, how to look for it in a luminaire design, and p
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Zierhut, J., K. D. Landes, W. Krömmer, and P. Heinrich. "Particle Flux Imaging (PFI) In-Situ Diagnostics for Thermal Coating Process." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p0063.

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Abstract This paper presents a low-cost in situ diagnostic method that monitors and controls thermal spray processes using a CCD camera and a PC. The method, called particle flux imaging (PFI), records light emitted by thermal spray particles and the hot propellent carrier-medium in which they are conveyed. Brightness distributions corresponding to temperature and density profiles are represented by sets of ellipses that are compared in real time to a reference image. An image analysis algorithm adjusts relevant spray parameters based on the comparisons, maintaining a constant and unchanged sp
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Garbrecht, Oliver, José Zapata, and Reinhold Kneer. "Solar Concentrator Shape Characterisation Using Composite Light-Field Imaging." In ASME 2015 9th International Conference on Energy Sustainability collocated with the ASME 2015 Power Conference, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/es2015-49649.

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The shape of an installed solar concentrator (e.g. a heliostat) may differ from its original design due to manufacturing defects, structural/wind loads and thermal expansion. By measuring the shape of a solar concentrator, it is possible to account for the deviation in optical performance from its original design point. A method to measure concentrator shape needs to be fast, accurate, and not involve contact or interference with the reflective surface of the concentrator. State-of-the-art techniques include flux mapping, photogrammetry, and deflectometry using conventional cameras. This paper
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Reports on the topic "Method of using light flux"

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Vanderah, T. A., C. K. Lowe-Ma, D. E. Bliss, M. W. Decker, and M. S. Osofsky. Growth of Near-Free-Standing YBa2Cu3O7-Type Crystals Using a Self- Decanting Flux Method. Defense Technical Information Center, 1991. http://dx.doi.org/10.21236/ada243221.

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Lee, Dongwon, Brian M. Bucher, Kenneth M. Krebs, Edward H. Seabury, and Jayson Wharton. Determination of the Deuterium-Tritium (D-T) Generator Neutron Flux using Multi-foil Neutron Activation Analysis Method. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1524045.

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Asenath-Smith, Emily, Emma Ambrogi, Lee Moores, Stephen Newman, and Jonathon Brame. Leveraging chemical actinometry and optical radiometry to reduce uncertainty in photochemical research. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42080.

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Subtle aspects of illumination sources and their characterization methods can introduce significant uncertainty into the data gathered from light-activated experiments, limiting their reproducibility and technology transition. Degradation kinetics of methyl orange (MO) and carbamazepine (CM) under illumination with TiO₂ were used as a case study for investigating the role of incident photon flux on photocatalytic degradation rates. Valerophenone and ferrioxalate actinometry were paired with optical radiometry in three different illumination systems: xenon arc (XE), tungsten halogen (W-H), and
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Maldonado, Leonardo, and Osmel Manzano. Measuring Regional Inequality in the Andean Countries: A Multiple-Stage Nested Theil Decomposition Using Night Light Emissions. Inter-American Development Bank, 2024. http://dx.doi.org/10.18235/0012952.

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This paper examines inequality in the Andean countries using satellite-recorded nighttime lights and gridded population datasets from 2012 to 2021. We follow a multiple-stage nested Theil index decomposition method accounting for each country's lowest administrative divisions to enhance our understanding of how spatial dimensions contribute as primary sources of inequality and how these contributions vary across each country. The main findings reveal a decrease in overall inequality for the Andean region throughout the period (primarily driven by a decline in between-country inequality) and an
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Crouch and Smith. L51976 Critical Assessment of the Remaining Strength of Corroded Pipe Using MFL Signals. Pipeline Research Council International, Inc. (PRCI), 2002. http://dx.doi.org/10.55274/r0011272.

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This report covers experimental work done to investigate the use of magnetic flux leakage signals from in-line inspection for measuring biaxial stress in the pipe wall. Test results show that the ratio of lowfield signals to high-field signals correlates well with the difference between axial and hoop stress. If data from pressure transducers are available, the hoop component can be backed out, leaving a good estimate of axial stress. Also in the report is a detailed discussion of the development and validation of a corrosion assessment method, SAFEGTI, that uses the MFL data and produces an e
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Nestleroth and Alers. L51946 Enhanced Implementation of MFL Using EMAT Sensors to Detect External Coating Disbondment. Pipeline Research Council International, Inc. (PRCI), 2002. http://dx.doi.org/10.55274/r0010676.

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External coatings are used routinely to protect transmission pipelines from conditions that promote corrosion. However, over time coatings may disbond, allowing corrosion to occur. To detect metal loss due to corrosion defects, transmission pipeline operators often use magnetic flux leakage (MFL) in-line inspection tools. These tools do not detect the cause of an actual problem, i.e., failure of a coating and the presence of a corrosive environment; rather, they detect only the result, i.e., a defect that may permanently alter the pressure capacity of the pipeline. Metal loss is the most commo
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Lopez Aldama, Daniel, and Roberto Capote Noy. Processing La-139 in the Unresolved Resonance Region for the FENDL Library. IAEA Nuclear Data Section, 2021. http://dx.doi.org/10.61092/iaea.mrpt-xx9q.

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The analysis of a numerical benchmark for a pure 1-meter sphere of La-139 proposed by C. Konno using ACE- and MATXS-formatted cross section files from the FENDL-3.1c library showed problems in the unresolved resonance region (URR). The total neutron flux computed using MCNP/ACE differed up to 50% from the one calculated applying ANISN/MATXS. The problem arose when too small total cross section values were sampled by the PURR module of NJOY2016 mainly due to the limitations of the processing method. NJOY2016 (PURR) patch to correct this issue was proposed and applied. The patch increases the ne
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Singh, Anjali. What Is Optogenetics and How Does It Work? ConductScience, 2022. http://dx.doi.org/10.55157/cs20220704.

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Optogenetics is a biotechnological method that combines optical systems and genetic engineering to control and monitor the functions of cells, tissues, and organisms. It involves using light-sensitive proteins called opsins to manipulate specific cells or regions with precision. This technique has revolutionized neuroscience, allowing researchers to study neural circuits and behavior by turning cells on and off. Opsins are categorized into microbial and animal types, each with specific functions. Optogenetic experiments require opsins, suitable plasmids or viral vectors, and a light source. Th
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Vyvial, Brent. PR-201-163707-R01 Effectiveness of Low Field MFL Technology Measuring Loading at Branch Connections. Pipeline Research Council International, Inc. (PRCI), 2017. http://dx.doi.org/10.55274/r0011440.

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Unsupported branch connections or branch connections under loads due to unstable support conditions are an integrity threat and potential failure location in pipelines. No industry accepted method currently exists to assist operators in identifying problematic branch connections in a measurably-reliable way. Low field magnetic flux leakage (LF-MFL) offers one potential method to identify stressed sections of pipeline. The purpose of this project was to evaluate the ability of LF-MFL in-line inspection (ILI) technology to characterize loading conditions around branch connections and to validate
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Vyvial, Brent. PR-201-183830-R01 Evaluating Low Field MFL in Measuring Loading Conditions at Branch Connections - Phase 2. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011597.

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Unsupported branch connections or branch connections under loads due to unstable support conditions can be an integrity threat and potential failure location in pipelines. No industry accepted method currently exists to assist operators in identifying problematic branch connections in a measurably-reliable way. Low field magnetic flux leakage (LF-MFL) offers one potential method to identify stressed sections of pipeline. The purpose of this project was to evaluate the ability of LF-MFL in-line inspection (ILI) technology to characterize loading conditions around branch connections and to valid
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