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Journal articles on the topic 'Illumination intensity'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Huang, Juan, Dana Křemenáková, Jiří Militký, and Vít Lédl. "Improvement and evenness of the side illuminating effect of side emitting optical fibers by fluorescent polyester fabric." Textile Research Journal 89, no. 10 (2018): 2010–18. http://dx.doi.org/10.1177/0040517518783344.

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A strong and even side illuminating effect is required for plastic optical fibers (POFs) in illuminating applications. In consideration of good flexibility and illumination, side emitting POFs with 2 and 3 mm core diameters are preferred, especially in active illuminating safety textiles. However, the side illumination intensity of side emitting POF varies significantly along the fiber length. Fluorescent polyester (PET) fabric rather than traditional surface modifications is employed to enhance and even the side illuminating effect of POFs based on the emitting principle of phosphors. Two tes

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2

Journal, Baghdad Science. "The contrast and illumination technique for image capturing under different Tungsten illumination." Baghdad Science Journal 7, no. 2 (2010): 939–47. http://dx.doi.org/10.21123/bsj.7.2.939-947.

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The digital camera which contain light unit inside it is useful with low illumination but not for high. For different intensity; the quality of the image will not stay good but it will have dark or low intensity so we can not change the contrast and the intensity in order to increase the losses information in the bright and the dark regions. . In this search we study the regular illumination on the images using the tungsten light by changing the intensities. The result appears that the tungsten light gives nearly far intensity for the three color bands(RGB) and the illuminated band(L).the resu

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KhudhairAbbas, Hiba. "The contrast and illumination technique for image capturing under different Tungsten illumination." Baghdad Science Journal 7, no. 2 (2010): 939–47. http://dx.doi.org/10.21123/bsj.2010.7.2.939-947.

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The digital camera which contain light unit inside it is useful with low illumination but not for high. For different intensity; the quality of the image will not stay good but it will have dark or low intensity so we can not change the contrast and the intensity in order to increase the losses information in the bright and the dark regions. . In this search we study the regular illumination on the images using the tungsten light by changing the intensities. The result appears that the tungsten light gives nearly far intensity for the three color bands(RGB) and the illuminated band(L).the resu

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4

Song, Wei, Zhi Yong Meng, and Shu Wang Chen. "Design of Illumination Intensity Measure Instrument." Applied Mechanics and Materials 513-517 (February 2014): 3522–25. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.3522.

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Photoelectric detection technology is a kind of new technology of non-contact measurement in terms of the modern photoelectric devices such as laser, infrared ray and optical cable. Through the detecting on the radiation with the information of the detecting objects and extracting the useful information by the input circuits, inputting LED from the A/D interface, and then the parameters such as geometric quantity or physical quantity are displayed. The design of illumination intensity measure instrument is based on photoelectric detection technology. It receives the incident light through the

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Novikov, Alexei, Miguel Moscoso, and George Papanicolaou. "Illumination Strategies for Intensity-Only Imaging." SIAM Journal on Imaging Sciences 8, no. 3 (2015): 1547–73. http://dx.doi.org/10.1137/140994617.

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6

Jakobsen, Michael L., and Steen G. Hanson. "Speckle dynamics for intensity-modulated illumination." Applied Optics 47, no. 20 (2008): 3674. http://dx.doi.org/10.1364/ao.47.003674.

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7

Tew, John M. "Superlux 300–High-Intensity Illumination System." Neurosurgery 33, no. 4 (1993): 764–65. http://dx.doi.org/10.1227/00006123-199310000-00034.

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Tew, John M. "Superlux 300–High-Intensity Illumination System." Neurosurgery 33, no. 4 (1993): 764–65. http://dx.doi.org/10.1097/00006123-199310000-00034.

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Heine, Jörn, Matthias Reuss, Benjamin Harke, Elisa D’Este, Steffen J. Sahl, and Stefan W. Hell. "Adaptive-illumination STED nanoscopy." Proceedings of the National Academy of Sciences 114, no. 37 (2017): 9797–802. http://dx.doi.org/10.1073/pnas.1708304114.

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The concepts called STED/RESOLFT superresolve features by a light-driven transfer of closely packed molecules between two different states, typically a nonfluorescent “off” state and a fluorescent “on” state at well-defined coordinates on subdiffraction scales. For this, the applied light intensity must be sufficient to guarantee the state difference for molecules spaced at the resolution sought. Relatively high intensities have therefore been applied throughout the imaging to obtain the highest resolutions. At regions where features are far enough apart that molecules could be separated with

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Mirzaev, M. A., A. I. Dyshekov, and I. G. Smirnov. "Influence of intensity of illumination on weed recognition algorithm." E3S Web of Conferences 193 (2020): 01058. http://dx.doi.org/10.1051/e3sconf/202019301058.

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This study explores the influence of daylight illumination on operating of autonomous robotic weed control complex. The illumination value is taken from minimum on the order of a few lux (high overcast) to maximum exceeding one hundred twenty thousand lux (bright noon). This was done to cover the entire daylight illumination range. This experiment is not focused on operating of the algorithm using the artificial light sources since they are supposed to be easily adjusted with the proper equipment. The performance of the algorithm at various illumination levels is evaluated by the surface area

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Lin, Chin-Chiuan. "Effect of Noise Intensity and Illumination Intensity on Visual Performance." Perceptual and Motor Skills 119, no. 2 (2014): 441–54. http://dx.doi.org/10.2466/26.24.pms.119c20z1.

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12

Tang, Yuan He, Qi Jie Jia, Lin Qin, et al. "Aurora Intensity Conversion and Distribution Simulation." Materials Science Forum 663-665 (November 2010): 340–43. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.340.

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For the upper atmospheric wind field measurement, the conversion relations between the unit of auroral (airglow) intensity Rayleigh and illumination, luminance, height of atmosphere, the photon number are derived. The auroral volume emission rate (VER) of O(1S)557.7nm and O(1D)630.0nm with height is presented. The VER peak values are 668R and 2630R respectively. The results can provide theory for light illumination and brightness of detecting upper atmosphere.

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Guo, Tianyi, Anastasiia Svanidze, Xiaoyu Zheng, and Peter Palffy-Muhoray. "Regimes in the Response of Photomechanical Materials." Applied Sciences 12, no. 15 (2022): 7723. http://dx.doi.org/10.3390/app12157723.

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Photomechanical materials perform mechanical work in response to illumination. Photoisomerization-based photomechanical materials may operate in different regimes depending on the intensity of the illuminating light. We examine the photoresponse of liquid crystalline azo-acrylate networks and show that a material property, the characteristic intensity of the material, defines the boundaries between different regimes. Asymptotic analysis indicates that whereas at low relative light levels, photostress is proportional to intensity, at high levels, it is proportional to fluence. Model predictions

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Curlin, Jahnavi, and Charles K. Herman. "Current State of Surgical Lighting." Surgery Journal 06, no. 02 (2020): e87-e97. http://dx.doi.org/10.1055/s-0040-1710529.

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AbstractSurgical performance in the operating room (OR) is supported by effective illumination, which mitigates the inherent environmental, operational, and visual challenges associated with surgery. Three critical components are essential to optimize operating light as illumination: (1) centering on the surgeon's immediate field, (2) illuminating a wide or narrow field with high-intensity light, and (3) penetrating into a cavity or under a flap. Furthermore, optimal surgical illumination reduces shadow, glare, and artifact in visualization of the surgical site. However, achieving these princi

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Liu, Yu, Hong Tao Miao, Min Huang, Ai Ping Liu, and Xian Yao Wu. "Research on Visual Performance under Different Lighting Environments of LED Light Sources." Applied Mechanics and Materials 731 (January 2015): 92–96. http://dx.doi.org/10.4028/www.scientific.net/amm.731.92.

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In order to study the LED light source illumination and the correlated color temperature effect on the human eye visual performance and physiological changes, through the comparative experiments of visual task performances under the different color temperature (3000K low color temperature, 4000K intermediate color temperature) and the different illumination (1145lux high intensity, 500lux middle intensity, 288lux low illumination), study the relationship between the biological effect and visual performance from two aspects of the visual perception performance and the physical efficiency such a

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Ivanova, T. V., and A. S. Voronkov. "Lighting intensity affects the fatty acid composition of total lipids of basil leaves and roots (Ocimum basilicum L.)." Физиология растений 70, no. 5 (2023): 472–83. http://dx.doi.org/10.31857/s0015330323600249.

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The vegetative organs of common basil (Ocimum basilicum L.) grown in water culture at different levels of illumination (50, 100, and 150 μmol PAR quanta/(m2 s)) for 21 days were studied. In the work, the Purple Velvet basil variety, which is popular in agriculture and has intensely colored leaves was used. The biomass, water content, and composition of fatty acids (FA) of total lipids in the leaves and roots of plants and the content of malondialdehyde and chlorophylls (a, b) in the aerial parts of plants were determined. The sensitivity of the FA composition and morphophysiological parameters

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Cobble, J. A., R. P. Johnson, and R. J. Mason. "High-intensity illumination of an exploding foil." Physics of Plasmas 4, no. 8 (1997): 3006–11. http://dx.doi.org/10.1063/1.872435.

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18

KISHIDA, Yasumitsu. "Intensity of Twilight Illumination in Natural Photoperiod." Journal of Agricultural Meteorology 41, no. 4 (1986): 359–63. http://dx.doi.org/10.2480/agrmet.41.359.

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19

Du, Yan Wei, and Guang Wei Yu. "Testing and Analysis of Intensity of Illumination of Manual Assembly Workbench Surface." Advanced Materials Research 433-440 (January 2012): 324–30. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.324.

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the manual assembly line used for assembling a certain type of lighting panel was introduced. The manual assembly works were analyzed. The assembly workbench surface illumination of the assembly line was tested. According to the light source is linear form, the assembly workbench surface was divided into some rectangles firstly. The intensity of illumination of these rectangles centers were tested by the illuminance meter. The average illuminance was also calculated out. According to these values, the illuminance curves were draw, which were approximately parallel lines. Further, the time valu

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Ahmed, Hesham A., Yuxin Tong, Lie Li, Suliaman Q. Sahari, Abdulkarem M. Almogahed, and Ruifeng Cheng. "Integrative Effects of CO2 Concentration, Illumination Intensity and Air Speed on the Growth, Gas Exchange and Light Use Efficiency of Lettuce Plants Grown under Artificial Lighting." Horticulturae 8, no. 3 (2022): 270. http://dx.doi.org/10.3390/horticulturae8030270.

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This study investigates and quantifies the integrative effects of CO2 concentration (500, 1000 and 1500 µmol mol−1), illumination intensity (100, 200 and 300 μmol m−2 s−1) and air speed (0.25, 0.50 and 0.75 m s−1) on the growth, gas exchange and light use efficiency of lettuce plants (Lactuca sativa L.) grown under artificial lighting. The results show that lettuce growth and gas exchange are closely related to CO2 concentration and illumination intensity, while air speed enhances CO2 transport during photosynthesis. The most influential two-way interactions were observed between CO2 concentra

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Li Hui, 李慧, 马钺洋 Ma Yueyang, 尹皓玉 Yin Haoyu, 韩晓泉 Han Xiaoquan, 黄宇峰 Huang Yufeng та 吴晓斌 Wu Xiaobin. "傅里叶合成照明中的光场均匀化技术研究". Laser & Optoelectronics Progress 61, № 15 (2024): 1508001. http://dx.doi.org/10.3788/lop231676.

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22

Ai, Lin, Min Tang, Ji Li, Hsiao Hsien Chen, and Hong Meng. "Ultra-Bright 2D Assembled Copper Nanoclusters: Fluorescence Mechanism Exploration and LED Application." Materials Science Forum 996 (June 2020): 20–25. http://dx.doi.org/10.4028/www.scientific.net/msf.996.20.

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Novel fluorescent nanomaterials have attracted enormous interests in the applications of illumination and display besides the traditional organic fluorophors. As potential alternatives, the environmental friendly fluorescent ultra-small organic-inorganic hybrid metal nanoclusters (size < 2 nm) is a series of powerful competitors used in illuminating field, on account of the non-poisonous, large amount of storage in earth, simple synthetic route, and relative low cost. The most important one, facile regulation of the fluorescence intensity and emission colors makes metal nanoclusters more at

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23

Volovlikova, Olga, Sergey Gavrilov, and Petr Lazarenko. "Influence of Illumination on Porous Silicon Formed by Photo-Assisted Etching of p-Type Si with a Different Doping Level." Micromachines 11, no. 2 (2020): 199. http://dx.doi.org/10.3390/mi11020199.

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The influence of illumination intensity and p-type silicon doping level on the dissolution rate of Si and total current by photo-assisted etching was studied. The impact of etching duration, illumination intensity, and wafer doping level on the etching process was investigated using scanning electron microscopy (SEM), atomic force microscopy (AFM), and Ultraviolet-Visible Spectroscopy (UV–Vis–NIR). The silicon dissolution rate was found to be directly proportional to the illumination intensity and inversely proportional to the wafer resistivity. High light intensity during etching treatment le

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24

Wiyanti, Nina, and Tri Martiana. "HUBUNGAN INTENSITAS PENERANGAN DENGAN KELELAHAN MATA PADA PENGRAJIN BATIK TULIS." Indonesian Journal of Occupational Safety and Health 4, no. 2 (2017): 144. http://dx.doi.org/10.20473/ijosh.v4i2.2015.144-154.

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ABSTRACTOne of eye’s health problems that can be experienced by batik artisans are eyestrain. There are many factors that can cause eyestrain, one of them is the intensity of the illumination. This study aimed to analyze the relationship between the intensity of illumination with eyestrain on batik artisans. This type of research is descriptive observational study with cross sectional design. This research was conducted in nine home industry batik which is in the area of Kampung Batik Jetis Sidoarjo. Data obtained by direct measurement, observation, interviews, and see the monument which conta

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Qian, Chenqi, and Philipp del Hougne. "Noise-Adaptive Intelligent Programmable Meta-Imager." Intelligent Computing 2022 (December 2, 2022): 1–13. http://dx.doi.org/10.34133/2022/9825738.

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We present an intelligent programmable computational meta-imager that tailors its sequence of coherent scene illuminations not only to a specific information-extraction task (e.g., object recognition) but also adapts to different types and levels of noise. We systematically study how the learned illumination patterns depend on the noise, and we discover that trends in intensity and overlap of the learned illumination patterns can be understood intuitively. We conduct our analysis based on an analytical coupled-dipole forward model of a microwave dynamic metasurface antenna (DMA); we formulate

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Shlaga, R. A., A. M. Alwan, and M. S. Mohammed. "Novel controlling pathway for metallic nanoparticles by laser assisted ion-reduction process." Journal of Ovonic Research 19, no. 2 (2023): 219–30. http://dx.doi.org/10.15251/jor.2023.192.219.

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In this work, the morphological and plasmonic features of the AgNPs which formed by ion-reduction process was carried out extensively. The application of the laser beam during the ion- reduction process has significant effect in the reconstruction of the formed AgNPs with small dimensions and non-frequent morphologies, according to the laser illumination intensity. For non-illumination process the deposited form of the AgNPs appear aggregated into cluster of layer AgNPs size due to the chemical reaction at Si interface, the AgNPs sizes varied from 0.85 to1.2 µm; while at lower laser intensity

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Zhan, Fangneng, Changgong Zhang, Yingchen Yu, et al. "EMLight: Lighting Estimation via Spherical Distribution Approximation." Proceedings of the AAAI Conference on Artificial Intelligence 35, no. 4 (2021): 3287–95. http://dx.doi.org/10.1609/aaai.v35i4.16440.

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Illumination estimation from a single image is critical in 3D rendering and it has been investigated extensively in the computer vision and computer graphic research community. On the other hand, existing works estimate illumination by either regressing light parameters or generating illumination maps that are often hard to optimize or tend to produce inaccurate predictions. We propose Earth Mover’s Light (EMLight), an illumination estimation framework that leverages a regression network and a neural projector for accurate illumination estimation. We decompose the illumination map into spheric

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Zakharchuk, D. A., Y. V. Koval, L. V. Yashchynskiy, and S. A. Fedosov. "Changing of the anisotropy parameter of mobility in n-Ge single crystals with heterogeneous distribution of doping impurity." Nuclear Physics and Atomic Energy 15, no. 1 (2014): 66–69. https://doi.org/10.15407/jnpae2014.01.066.

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The influence of illumination with different intensity on changing parameter's anisotropy of mobility K = μ⊥ / μ∥ = m∥ ∕ m⊥ × 〈 τ⊥ 〉 ∕ 〈 τ∥ 〉 in γ-irradiated by the chosen dose examples n-Ge with heterogeneous distribution of doping impurity in crystal volume is analyzed. On the basis of experimental and theoretical calculations it is shown that in γ-irradiated n-Ge the longitudinal component of mobility μ∥ in the separate isoenergetic ellipsoid does not practically depend on illumination intensity. The essential change of transversal mobility component μ⊥ at the increase of illumination inten

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Hackbarth, Steffen, Rayhanul Islam, Vladimír Šubr, Tomáš Etrych, and Jun Fang. "Singlet Oxygen In Vivo: It Is All about Intensity." Journal of Personalized Medicine 12, no. 6 (2022): 891. http://dx.doi.org/10.3390/jpm12060891.

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The presented work addresses the influence of illumination intensity on the amount and locations of singlet oxygen generation in tumor tissue. We used time-resolved optical detection at the typical emission wavelength around 1270 nm and at 1200 nm where there is no singlet oxygen phosphorescence to determine the phosphorescence kinetics. The discussed data comprise in vivo measurements in tumor-laden HET-CAM and mice. The results show that illumination that is too intense is a major issue, affecting many PDT treatments and all singlet oxygen measurements in vivo so far. In such cases, photosen

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Ормонт, Н. Н., та И. А. Курова. "Изменения фотоэлектрических свойств нелегированных пленок аморфного гидрированного кремния под влиянием предварительного освещения при повышенных температурах". Физика и техника полупроводников 54, № 4 (2020): 367. http://dx.doi.org/10.21883/ftp.2020.04.49142.9331.

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Abstract The effect of preliminary weak illumination at elevated temperatures on the photoelectric properties of undoped α-Si:H films is investigated. It is found that the dark conductivity and photoconductivity of films increases with the preliminary-illumination intensity, and the parameter γ determining the dependence of the photoconductivity on the illumination intensity decreases due to an increasing fraction of the bimolecular recombination of electrons at energy levels of the tail of the density of states of the conduction band. It is assumed that this effect may be induced by the prese

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31

Liu, Tao, Chin-Chiuan Lin, Kuo-Chen Huang, and Yi-Chang Chen. "Effects of noise type, noise intensity, and illumination intensity on reading performance." Applied Acoustics 120 (May 2017): 70–74. http://dx.doi.org/10.1016/j.apacoust.2017.01.019.

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32

Zagumenny, R.A., and A.V. Nikolaeva. "The effect of lighting intensity on the seed germination of Dracaena aletriformis (Haw.) Bos in the protected ground conditions of Donetsk Botanical Garden." Industrial bitany 23, no. 4 (2024): 40–45. https://doi.org/10.5281/zenodo.10566367.

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The research was focused on the influence of different lighting intensity on the germination of <em>Dracaena aletriformis</em> (Haw.) Bos seeds in the protected ground conditions of Donetsk Botanical Garden. The study has shown the presence of statistically significant differences between indicators of seed germination under different levels of illumination intensity. It has been found that illumination level of 1973.7 ± 198.4 lux (that corresponds to 50 % of the illumination level) increases the seed germination rates by 34 % and the average germination term of a seed accelerated

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Cha, Yeon-Hwa, Chang-Mook Chun, Tae-Bum Kwon, and Sung-Chul Kang. "Traffic Sign Recognition Considering the Intensity of Illumination." Journal of Korea Robotics Society 6, no. 2 (2011): 173–81. http://dx.doi.org/10.7746/jkros.2011.6.2.173.

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NI Xuxiang, 倪旭翔, 高世杰 GAO Shijie, 魏科宇 WEI Keyu, 王莞舒 WANG Wanshu, and 崔永胜 CUI Yongsheng. "Palm Vein Imaging Based on MultiIntensity Illumination." ACTA PHOTONICA SINICA 42, no. 12 (2013): 1534–38. http://dx.doi.org/10.3788/gzxb20134212.1534.

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LI Chong, 李冲, 高昕 GAO Xin, 李希宇 LI Xi-yu, 陆长明 LU Chang-ming, and 唐嘉 TANG Jia. "Improved Coherent Light Illumination Intensity Correlation Imaging Method." ACTA PHOTONICA SINICA 47, no. 10 (2018): 1011004. http://dx.doi.org/10.3788/gzxb20184710.1011004.

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Křemenáková, Dana, Barbora Meryová, Jiří Militký, and Vít Lédl. "Illumination intensity changes of side emitting optical fibers." World Journal of Engineering 10, no. 3 (2013): 217–22. http://dx.doi.org/10.1260/1708-5284.10.3.217.

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Chegaar, M., A. Hamzaoui, A. Namoda, P. Petit, M. Aillerie, and A. Herguth. "Effect of Illumination Intensity on Solar Cells Parameters." Energy Procedia 36 (2013): 722–29. http://dx.doi.org/10.1016/j.egypro.2013.07.084.

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Hoffman, Zachary R., and Charles A. DiMarzio. "Structured illumination microscopy using random intensity incoherent reflectance." Journal of Biomedical Optics 18, no. 6 (2012): 061216. http://dx.doi.org/10.1117/1.jbo.18.6.061216.

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Zavagno, Daniele, Olga Daneyko, and Zili Liu. "The Influence of Physical Illumination on Lightness Perception in Simultaneous Contrast Displays." i-Perception 9, no. 4 (2018): 204166951878721. http://dx.doi.org/10.1177/2041669518787212.

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Three experiments investigated the role of physical illumination on lightness perception in simultaneous lightness contrast (SLC). Four configurations were employed: the classic textbook version of the illusion and three configurations that produced either enhanced or reduced SLC. Experiment 1 tested the effect of ambient illumination on lightness perception. It simulated very dark environmental conditions that nevertheless still allowed perception of different shades of gray. Experiment 2 tested the effect of the intensity of Gelb lighting on lightness perception. Experiment 3 presented two c

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Xiang, Jinhai, Heng Fan, Honghong Liao, Jun Xu, Weiping Sun, and Shengsheng Yu. "Moving Object Detection and Shadow Removing under Changing Illumination Condition." Mathematical Problems in Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/827461.

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Moving object detection is a fundamental step in video surveillance system. To eliminate the influence of illumination change and shadow associated with the moving objects, we proposed a local intensity ratio model (LIRM) which is robust to illumination change. Based on the analysis of the illumination and shadow model, we discussed the distribution of local intensity ratio. And the moving objects are segmented without shadow using normalized local intensity ratio via Gaussian mixture model (GMM). Then erosion is used to get the moving objects contours and erase the scatter shadow patches and

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Widmer, Johannes, Karl Leo, and Moritz Riede. "Temperature dependent behavior of flat and bulk heterojunction organic solar cells." MRS Proceedings 1493 (2013): 269–73. http://dx.doi.org/10.1557/opl.2013.101.

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ABSTRACTThe open-circuit voltage of an organic solar cell is increasing with decreasing temperature and with increasing illumination intensity. These dependencies are quantitatively investigated for two types of organic solar cells, one with a flat donor-acceptor heterojunction and one with a mixed layer bulk heterojunction. Zinc-phthalocyanine and C60 are used as donor and acceptor, respectively. A qualitative difference is found for the two geometries. We find that a logarithmic illumination intensity dependence with temperature as a linear pre-factor of the logarithm, which is commonly repo

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Wang, Xue, Xiao-Qiong Wen, Li-Ru Wang, Yuan-Tian Yang, and Xiao-Dong Xue. "Re-illumination and pause behavior of streamer filament of streamer discharge in water." Acta Physica Sinica 71, no. 1 (2022): 015203. http://dx.doi.org/10.7498/aps.71.20211162.

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The streamer discharge in water is a main object for studying the basic physical and chemical processes of an electric discharge in water. In this paper, the re-illuminations and the pause behaviors of a streamer filament of the microsecond pulsed streamer discharge in water with different conductivities (20 to 800 µS/cm) are studied by adopting a needle-plate electrode system and an ultra-high-speed camera system. The cause why the re-illumination of the streamer filament is difficult to detect by using the camera system as the water conductivity gets higher is discussed. It is found that the

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Lu, Hao, Jingjing Wang, and Wenqiao Yuan. "Illumination Effects on Bacteriorhodopsin Accumulation in Archaeon Halobacterium Halobium." Journal of the ASABE 67, no. 3 (2024): 525–31. http://dx.doi.org/10.13031/ja.15349.

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Highlights Effects of varying illumination conditions, including light intensity, light color, and illumination pattern on archaeon Halobacterium halobium growth and bacteriorhodopsin (BR) accumulation were first evaluated. LED green light was much more energy-efficient than the red and blue lights in this research. If energy consumption was not a concern, LED blue and red lights (or their combinations) were more effective for cell growth and BR accumulation, respectively, with a similar light intensity. Abstract. This study was to understand the effect of LED light intensity, color, and illum

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Regin Wiegell, Stine, Merete Hædersdal, and Hans Christian Wulf. "Cold Water and Pauses in Illumination Reduces Pain During Photodynamic Therapy: A Randomized Clinical Study." Acta Dermato-Venereologica 89, no. 2 (2008): 145–49. http://dx.doi.org/10.2340/00015555-0568.

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Pain is the main acute adverse event during photodynamic therapy of skin lesions. The objective of this randomized study was to evaluate the pain-relieving effect of pauses and cooling during illumination. Twenty-four patients with actinic keratoses were treated with photodynamic therapy in two symmetrical areas and cooled with either cold-water-spray or cold-water-pack (CoolPack). Treatment areas were cooled during either the first or second period of illumination, which were separated by a 3-min pause in illumination. Pain intensity was scored from 0 to 10. Water-spray reduced the mean pain

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Hrubý, Dušan, Lukáš Vacho, Ľubomír Kubík, et al. "Characteristics of Distance Errors of Infrared Sensor Relation to Colour Surfaces." Acta Technologica Agriculturae 25, no. 1 (2022): 40–46. http://dx.doi.org/10.2478/ata-2022-0007.

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Abstract This paper deals with the determination of the absolute errors of a small time of flight (ToF) distance sensor with respect to coloured surfaces at different illumination intensities. The aim was to determine the absolute error of the measured distance by the VL53L1X sensor when set to short-mode and long-mode at different illumination intensities: 10 lx and 350 lx depending on the coloured surface using regression analysis methods. The research was performed using 7 colour samples with different spectral colours determined according to the CIE Lab colour model. Based on the performed

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Shan, Tiqiang, and Xinglin Qi. "Performance of Series Connected GaAs Photovoltaic Converters under Multimode Optical Fiber Illumination." Advances in OptoElectronics 2014 (December 21, 2014): 1–6. http://dx.doi.org/10.1155/2014/824181.

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In many military and industrial applications, GaAs photovoltaic (PV) converters are connected in series in order to generate the required voltage compatible with most common electronics. Multimode optical fibers are usually used to carry high-intensity laser and illuminate the series connected GaAs PV converters in real time. However, multimode optical fiber illumination has a speckled intensity pattern. The series connected PV array is extremely sensitive to nonuniform illumination; its performance is limited severely by the converter that is illuminated the least. This paper quantifies the e

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Diaz-Escobar, Julia, Vitaly Kober, and Jose A. Gonzalez-Fraga. "LUIFT: LUminance Invariant Feature Transform." Mathematical Problems in Engineering 2018 (October 28, 2018): 1–17. http://dx.doi.org/10.1155/2018/3758102.

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Illumination-invariant method for computing local feature points and descriptors, referred to as LUminance Invariant Feature Transform (LUIFT), is proposed. The method helps us to extract the most significant local features in images degraded by nonuniform illumination, geometric distortions, and heavy scene noise. The proposed method utilizes image phase information rather than intensity variations, as most of the state-of-the-art descriptors. Thus, the proposed method is robust to nonuniform illuminations and noise degradations. In this work, we first use the monogenic scale-space framework

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Uswatun Chasanah, Aris Widodo, and Mala Rosa Aprillya. "Efforts to Prevent Eye Fatigue Through Evaluation of Lighting Intensity (Illumination Level) in the Library at Muhammadiyah University Lamongan." ABDIMAS: Jurnal Pengabdian Masyarakat 7, no. 3 (2024): 883–91. http://dx.doi.org/10.35568/abdimas.v7i3.4821.

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The Muhammadiyah group has implemented community service programs (PKM) in collaboration with the Universitas Muhammadiyah Lamongan (UMLA) Library. In order to comply with SNI 03-6197-2000 regarding energy conservation in lighting systems, the PKM activity aims to measure and create a contour map of the lighting intensity level (also known as illumination level) in the UMLA library space, increase target partners' knowledge regarding lighting intensity (also known as illumination level) in the work space and its relationship to eye fatigue, and implement technology in the form of an IoT integr

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Makeev, Vasyl, Anatoliy Derevjanchuk, Andrii Vakal, and Mykola Liapa. "Devising a technique for descending the illumination elements of aerial vehicles." Eastern-European Journal of Enterprise Technologies 3, no. 1 (129) (2024): 14–24. http://dx.doi.org/10.15587/1729-4061.2024.303639.

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The object of this study is the process of descending illumination elements equipped with a braking device in the form of two-bladed grills rotating in different directions. The classic parachute method does not provide the necessary speed of descent, it has low illumination parameters and significant drift of illumination elements by side wind. To solve the tasks set, mathematical dependences were obtained for calculating the aerodynamic characteristics of the descent device with the illumination element and its delivery to the ejection point. The drag and lift force coefficients during the f

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Ye, Zhi-Ting, Chieh Chang, Mao-Chieh Juan, and Kuei-Jung Chen. "Luminous Intensity Field Optimization for Antiglare LED Desk Lamp without Second Optical Element." Applied Sciences 10, no. 7 (2020): 2607. http://dx.doi.org/10.3390/app10072607.

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This study proposes a model of a light module with an optimized luminous intensity field for realizing an antiglare light-emitting diode (LED) desk lamp without a second optical element. We simulated different luminous intensity field profiles to analyze the unified glare rating (UGR) and illumination uniformity performance of a desk lamp. The spatial effect of UGR and the illumination uniformity affect eye comfort. The light module was set to different beam angles without a second optical element, louver structure, and reflective element on the luminaire to compare different UGRs and uniformi

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