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Journal articles on the topic 'Brightnes'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Bellany, A. "'The Brightnes of the Noble Leiutenants Action': An Intellectual Ponders Buckingham's Assassination." English Historical Review 118, no. 479 (2003): 1242–63. http://dx.doi.org/10.1093/ehr/118.479.1242.

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2

Yusni, Eri, and Nurul F. D. Hasibuan. "Short communications: Effect of red spinach (Amaranthus tricolor L. var Blitumbrum) extract in the diet on color brightnes of guppy fish (Poecilia reticulata)." Aceh Journal of Animal Science 8, no. 1 (2023): 30–33. http://dx.doi.org/10.13170/ajas.8.1.26813.

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Fish color brightness is influenced by food intake, but no prior reviews have explored the use of red spinach extract in fish feed to enhance color brightness and promote growth in guppy (Poecilia reticulata). Therefore, this study aims to determine the suitable concentration of red spinach extract Amaranthus tricolor color brightness, growth, and survival of guppy. The experiment followed a completely randomized design with three concentrations of red spinach extract (3%, 4%, and 5%) replicated three times at the UPTD Fish Breeding Center in North Binjai Regency, North Sumatra Province. Furth

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Sundari, Sundari, Anastasia Mamilisti Susiati, Nafiatun Sholihah, Fadil Hamzah, and Sri Hartati Candra Dewi. "Pengaruh Curing Dengan Nanokapsul Kunyit Terhadap Kualitas Nugget Fungsional Daging Ayam Kub." Innovative: Journal Of Social Science Research 4, no. 2 (2024): 3165–77. https://doi.org/10.31004/innovative.v4i2.9568.

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Penelitian ini bertujuan untuk mengetahui pengaruh curing dengan nanokapsul kunyit terhadap kualitas nugget fungsional daging ayam KUB. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola searah. Hasil penelitian ini menunjukan bahwa kandungan nugget dengan curing nanokapsul kunyit 0% sampai 3% berturut-turut menunjukan bahwa uji organoleptik aroma signifikan 2,30; 3,06; 2,03; 2,36, warna signifikan 2,96; 2,83; 1,93; 2,40, rasa 2,93; 3,06; 2,53; 2,60, tekstur signifikan 2,86; 2,76; 2,33; 2,20, keseluruhan signifikan 2,93; 3,13, 2,26; 2,40. Uji fisik warna yellow signifikan 3,23; 3,70;

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Carvalho, Adolfo S., and Lynne A. Hillenbrand. "Rosette Nebula Outburst Gaia 24djk from the Young Stellar Object V557 Mon." Research Notes of the AAS 9, no. 2 (2025): 38. https://doi.org/10.3847/2515-5172/adb583.

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Abstract A previously faint young stellar object (YSO), V557 Mon, rapidly brightened in late 2024 and is currently at least ΔG = 3.3 mag brighter than its typical pre-outburst brightness. The ongoing outburst is identified in the Gaia Alerts system as Gaia24djk. We obtained a 1–2.5 μm spectrum of the object and find the spectrum is dominated by line emission and continuum excess consistent with rapid YSO accretion, similar to the star EX Lup during its outburst state. We speculate that the burst, which has not yet reached its peak brightness, may become an FU Ori outburst, which would be evide

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Hilmi, Endang, Setiyo Nugroho, and Eming Sudiana. "Empang Parit as Silvofishery Model to Support Conserving Mangrove and Increasing Economic Benefit of Social Community." Omni-Akuatika 17, no. 2 (2021): 101. http://dx.doi.org/10.20884/1.oa.2021.17.2.817.

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Mangrove, estuary and lagoon ecosystem can be used as the aquatic organism habitat. These ecosystems also have good suitability to support activity of silvofishery system. Empang parit as a model of silvofishery using the integrating between the conservation activity of mangrove and aquatic ecosystem with increasing of benefit income for fisherman. This research aimed to analyze the model and pattern of empang parit, environment factor of empang parit and benefit cost analysis of empang parit. The research used vegetation analysis, water quality analysis, cash flow analysis, satellite image an

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Nguyen, Erin, Antonia Pandelieva, and Roberto A. Chica. "Increasing the brightness of red fluorescent proteins by saturation mutagenesis." University of Ottawa Science Undergraduate Research Journal 1 (August 31, 2018): 10–14. http://dx.doi.org/10.18192/osurj.v1i1.3666.

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Red fluorescent proteins (RFPs) are genetically-encoded fluorophores that are widely used for in vivo imaging. For all applications of RFPs, brighter variants are desired. Previously, we improved the brightness of mRojoA, a red-shifted mutant of the widely-used RFP mCherry, by designing a triple-decker motif of aromatic rings around its chromophore. This yielded the brighter variant mRojo-VHSV, which contains a triple-decker motif consisting of His and Tyr side chains that pack against the chromophore. This improved chromophore packing resulted in an approximately 3-fold brightness increase at

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Hu, Yunfeng, and Yunzhi Zhang. "Global Nighttime Light Change from 1992 to 2017: Brighter and More Uniform." Sustainability 12, no. 12 (2020): 4905. http://dx.doi.org/10.3390/su12124905.

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Nighttime light images record the brightness of the Earth surface, indicating the scope and intensity of human activities. However, there are few studies on the long-term changes in global nighttime lights. In this paper, the authors constructed a long time series (1992~2017) nighttime light dataset combining the Defense Meteorological Satellites Program/Operational Linescan System (DMSP-OLS) and the Suomi National Polar-Orbiting Partnership Visible Infrared Imaging Radiometer Suite (NPP-VIIRS) data sources and observed the following: (1) Global nighttime lights have become brighter. The globa

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Yao, Er Gang, Feng Qi Zhao, Si Yu Xu, Rong Zu Hu, Hui Xiang Xu, and Hai Xia Hao. "Combustion Characteristics of Composite Solid Propellants Containing Different Coated Aluminum Nanopowders." Advanced Materials Research 924 (April 2014): 200–211. http://dx.doi.org/10.4028/www.scientific.net/amr.924.200.

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Aluminum nanopowders coated with oleic acid (nmAl+OA), perfluorotetradecanoic acid (nmAl+PA) and nickel acetylacetonate (nmAl+NA) were prepared. The combustion characteristics of hydroxyl terminated polybutadiene (HTPB) composite solid propellants containing different coated aluminum nanpowders were investigated. The result shows that the burning rate of the propellant sample containing nmAl+NA is the highest at different pressure, the maximum burning rate is up to 26.13 mm·s-1at 15 MPa. The burning rates of propellant samples containing nmAl+OA and nmAl+PA are almost the same at different pre

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Stall, Alan, Feng-Jun Luan, Mark Edinger, Maria Jaimes, Jeanne Elia, and Yu Chen. "Improved identification of leukocyte sub-populations using new bright fluorochrome reagents in multi-color flow cytometric analysis. (124.11)." Journal of Immunology 188, no. 1_Supplement (2012): 124.11. http://dx.doi.org/10.4049/jimmunol.188.supp.124.11.

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Abstract With many cell surface markers expressed at very low levels the ability to identify (and sort) biologically relevant sub-populations by flow cytometry is often limited by the availability of fluorescent reagents sufficiently bright to resolve these markers. In the past year multiple new fluorochromes have been developed which have significantly improved brightness compared to previously available reagents. In particular, BD Horizon™ PE-CF594 and BD Brilliant Violet™ 421 reagents can be 2-5 times brighter than equivalent PE reagents which have typically been the brightest available. Th

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Wang, Dou, Chao Xu, Bo Feng, et al. "Multi-Exposure Image Fusion Based on Weighted Average Adaptive Factor and Local Detail Enhancement." Applied Sciences 12, no. 12 (2022): 5868. http://dx.doi.org/10.3390/app12125868.

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In order to adapt to the local brightness and contrast of input image sequences, we propose a new weighted average adaptive factor well-exposure weight evaluation scheme. The exposure weights of brighter and darker pixels are determined according to the local average brightness and expected brightness. We find that in the traditional multi-exposure image fusion scheme, the brighter and darker regions of the scene lose many details. To solve this problem, we first propose a standard to determine the brighter and darker regions and then use a fast local Laplacian filter to enhance the image in t

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De, Bishnu Prasad, Rajib Kar, Durbadal Mandal, and Sakti Prasad Ghoshal. "Design of Optimal CMOS Inverter for Symmetric Switching Characteristics Using Firefly Algorithm with Wavelet Mutation." International Journal of Swarm Intelligence Research 5, no. 2 (2014): 29–64. http://dx.doi.org/10.4018/ijsir.2014040103.

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In this article, a population based meta-heuristic search method called Firefly Algorithm with Wavelet Mutation (FAWM) is applied for the optimal switching characterization of CMOS inverter. In Firefly Algorithm (FA), behaviour of flashing firefly towards its competent mate is structured. In this algorithm attractiveness depends on brightness of light and brighter fireflies are considered as more attractive among the population. For the present minimization based optimization problem, brightness varies inversely proportional to the error fitness value, so the position of the brightest firefly

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Dixit, Adarsh Mohan, and Vikas Mohan Dixit. "BRIGHTNESS OF A SOLAR BOTTLE BULB AT DIFFERENT TIMES OF THE DAY COMPARED TO A REGULAR LIGHT BULB." International Journal of Engineering Science and Humanities 3, no. 1 (2013): 1–4. http://dx.doi.org/10.62904/kvkc7p10.

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We wanted to figure out if a solar bottle bulb was brighter than a regular light bulb when the sun is out. Our hypothesis, if we build a solar bottle bulb and compare the brightness to a regular bulb, then the solar bottle bulb will be brighter at times when the sun is out because the sun is brighter than a regular light bulb, in the end was proven. The bottle bulb was brighter and shined more luminously compares to the regular which was dimmer during the brighter times of the day. To do this we uses several materials a water/soda bottle, 1’x1’ roof sheet material, purified water, chlorine/ble

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Ferrarese, Laura, and Patrick Côté. "The structure of early-type galaxies from the ACS Virgo and Fornax cluster surveys: cores, nuclei and supermassive black holes." Proceedings of the International Astronomical Union 3, S245 (2007): 203–6. http://dx.doi.org/10.1017/s1743921308017651.

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AbstractThe core structure of early-type galaxies is revisited in light of recent results from the ACS Virgo and Fornax Cluster Surveys. These surveys are comprised of HST/ACS g, z band images for a representative sample of 143 early-type galaxies, spanning a factor 720 in B-band luminosity. The data indicates a clear transition in the core structure going from the brightest to the faintest galaxies. In contrast to previous claims, however, this transition is found to be a continuous function of galaxy magnitude. We characterize the core structure in terms of deviations of the observed surface

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14

Wood, A. K. W., C. M. Sehgal, and M. Polansky. "Sonographic brightness of the flexor tendons and ligaments in the metacarpal region of horses." American Journal of Veterinary Research 54, no. 12 (1993): 1969–74. http://dx.doi.org/10.2460/ajvr.1993.54.12.1969.

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Summary Sonographic observations were made of the image mean gray scale (mgs) of the flexor tendons and ligaments in the left and right metacarpal regions of each of 10 clinically normal horses. In images made in the dorsal and sagittal planes, the mgs was measured at multiple sites in the superficial digital flexor tendon (sdft), deep digital flexor tendon (ddft), accessory ligament (al), and suspensory ligament (sl), and at single sites in the medial and lateral limbs of the sl, and the palmar ligament. Relative sonographic brightness of each tendon and ligament was calculated by dividing th

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15

Shcherbo, Dmitry, Christopher S. Murphy, Galina V. Ermakova, et al. "Far-red fluorescent tags for protein imaging in living tissues." Biochemical Journal 418, no. 3 (2009): 567–74. http://dx.doi.org/10.1042/bj20081949.

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A vast colour palette of monomeric fluorescent proteins has been developed to investigate protein localization, motility and interactions. However, low brightness has remained a problem in far-red variants, which hampers multicolour labelling and whole-body imaging techniques. In the present paper, we report mKate2, a monomeric far-red fluorescent protein that is almost 3-fold brighter than the previously reported mKate and is 10-fold brighter than mPlum. The high-brightness, far-red emission spectrum, excellent pH resistance and photostability, coupled with low toxicity demonstrated in transg

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16

Hughes, David W. "Possible Mechanisms for Cometary Outbursts." International Astronomical Union Colloquium 116, no. 2 (1991): 825–51. http://dx.doi.org/10.1017/s0252921100012732.

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Abstract.A cometary outburst is an unexpected flare-up in the brightness of a comet, with the brightness normally increasing by 2 to 3 magnitudes, but on occasion by up to 5. This outburst is superimposed on the general change in brightness that is related to the comet’s heliocentric and geocentric distance, spin phase, spin axis orientation and activity geography. The brightness variation during outbursts usually has an abrupt, eruptive onset followed by a quasi-exponential decrease and lasts for a few tens of days. Several cometary outbursts are accompanied by the expansion of a spherical ha

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17

Jones, Paul A., and W. Bruce McAdam. "The Head—Tail Radio Galaxy B1610—605." Publications of the Astronomical Society of Australia 11, no. 1 (1994): 74–77. http://dx.doi.org/10.1017/s132335800001972x.

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AbstractThe radio galaxy B1610–605 within the Abell cluster A3627 has a low-brightness tail extending at least 26 arcmin from the nucleus of the 14 · 5m galaxy. The structure of this tail has been explored using observations with the Molonglo Observatory Synthesis Telescope (MOST) and the Australia Telescope Compact Array (ATCA). We present details of the brightness, width and alignment of the tail. The single tail expands and brightens rapidly within 2 arcmin of the nucleus. Confinement by the pressure of the cluster medium maintains a low but constant brightness for the tail between 10 and 2

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18

Tilahun, Surafel Luleseged, and Hong Choon Ong. "Modified Firefly Algorithm." Journal of Applied Mathematics 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/467631.

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Firefly algorithm is one of the new metaheuristic algorithms for optimization problems. The algorithm is inspired by the flashing behavior of fireflies. In the algorithm, randomly generated solutions will be considered as fireflies, and brightness is assigned depending on their performance on the objective function. One of the rules used to construct the algorithm is, a firefly will be attracted to a brighter firefly, and if there is no brighter firefly, it will move randomly. In this paper we modify this random movement of the brighter firefly by generating random directions in order to deter

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19

Wrigge, Matthias, You-Hua Chu, Eugene A. Magnier, and Yuichi Kamata. "ASCA SIS X-ray Observations of the Wind Blown Bubble NGC 6888." International Astronomical Union Colloquium 166 (1997): 425–28. http://dx.doi.org/10.1017/s0252921100071372.

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AbstractWe present ASCA SIS observations of the wind-blown bubble NGC 6888. Because the ASCA SIS is sensitive to higher energy photons and has a higher spectral resolution compared to the ROSAT PSPC, we are able to detect a T ≈ 8×106 K plasma component besides the T ≈ 1.5×106 K component known from previous PSPC observations. The existence of a high-temperature component, the observed limb-brightened X-ray surface brightness profile, and the observed level of X-ray surface brightness cannot be satisfactorily explained by currently available models. Reducing heat conduction at the contact disco

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20

Muma, Katherine E., and Patrick J. Weatherhead. "Plumage variation and dominance in captive female Red-winged Blackbirds." Canadian Journal of Zoology 69, no. 1 (1991): 49–54. http://dx.doi.org/10.1139/z91-008.

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Flocks of female Red-winged Blackbirds (Agelaius phoeniceus) were maintained in aviaries to determine whether variation in brightness of epaulette or chin plumage correlated with dominance status in nonbreeding situations. No correlation was found between natural plumage variation and dominance in eight control groups, although dominant females were heavier and in better condition. In two groups in which epaulettes were experimentally brightened on some birds and two groups where some chins were brightened, brightening an individual's plumage had no consistent effect on dominance status. Thus,

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Fuchs, Bernhard Maximilian, Günter Wallner, Wolfgang Beisker, Ines Schwippl, Wolfgang Ludwig, and Rudolf Amann. "Flow Cytometric Analysis of the In Situ Accessibility of Escherichia coli 16S rRNA for Fluorescently Labeled Oligonucleotide Probes." Applied and Environmental Microbiology 64, no. 12 (1998): 4973–82. http://dx.doi.org/10.1128/aem.64.12.4973-4982.1998.

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ABSTRACT In situ identification of whole fixed bacterial cells by hybridization with fluorescently labeled, rRNA-targeted oligonucleotide probes is often limited by low signal intensities. In addition to an impermeability of the cell periphery and a low cellular rRNA content, the three-dimensional structure of the ribosome may hinder the access of oligonucleotides to their target sites. Until now, a systematic study on the accessibility of 16S rRNA target sites had not been done. Here, we report fluorescence intensities obtained with more than 200 oligonucleotide probes (mostly 18-mers) used w

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Li, Zhentao, and Tianzi Li. "Economic Sanctions and Regional Differences: Evidence from Sanctions on Russia." Sustainability 14, no. 10 (2022): 6112. http://dx.doi.org/10.3390/su14106112.

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The objective of this study was to analyze the relationship between economic sanctions and regional differences within Russia from three perspectives: regional favoritism of the political elite, industry development, and trade costs. Using the nighttime lights in Russia, we found a correlation between economic sanctions and regional differences. First, as sanctions increased, the lights of Moscow, St. Petersburg, and provincial capitals were brighter than those of the rest of the country. Second, the lights of manufacturing cities were brighter as sanctions increased. However, under the influe

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Robles, José, Jaime Zamorano, Sergio Pascual, Alejandro Sánchez de Miguel, Jesús Gallego, and Kevin J. Gaston. "Evolution of Brightness and Color of the Night Sky in Madrid." Remote Sensing 13, no. 8 (2021): 1511. http://dx.doi.org/10.3390/rs13081511.

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Major schemes to replace other streetlight technologies with Light-Emitting Diode (LED) lamps are being undertaken across much of the world. This is predicted to have important consequences for nighttime sky brightness and color. Here, we report the results of a long-term study of these characteristics focused on the skies above Madrid. The sky brightness and color monitoring station at Universidad Complutense de Madrid (inside the city) collected Johnson B, V, and R sky brightness data, Sky Quality Meter (SQM), and Telescope Encoder Sky Sensor-WiFi (TESS-W) broadband photometry throughout the

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Robles, José, Jaime Zamorano, Sergio Pascual, de Miguel Alejandro Sánchez, Jesús Gallego, and Kevin Gaston. "Evolution of Brightness and Color of the Night Sky in Madrid." Remote Sendsing 13, no. 8 (2021): 1511. https://doi.org/10.3390/rs13081511.

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Major schemes to replace other streetlight technologies with Light-Emitting Diode (LED) lamps are being undertaken across much of the world. This is predicted to have important consequences for nighttime sky brightness and color. Here, we report the results of a long-term study of these characteristics focused on the skies above Madrid. The sky brightness and color monitoring station at Universidad Complutense de Madrid (inside the city) collected Johnson B, V, and R sky brightness data, Sky Quality Meter (SQM), and Telescope Encoder Sky Sensor-WiFi (TESS-W) broadband photometry throughout the

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Bhattacharya, Joydeep, and Job P. Lindsen. "Music for a Brighter World: Brightness Judgment Bias by Musical Emotion." PLOS ONE 11, no. 2 (2016): e0148959. http://dx.doi.org/10.1371/journal.pone.0148959.

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Wang, Hui Li, Zhe Wang, Wen Xia Liu, and Le Pan Cao. "Application of Optical Brightening Agent in Wet End and Surface Sizing." Advanced Materials Research 550-553 (July 2012): 3360–63. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.3360.

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The Optical Brightening Agent (OBA) used in papermaking is mainly the compounds which are diaminostilbene disulfonic acid derivatives. The three types of the compounds were investigated in the paper to brighten papersheet. The brightness could be enhanced limitedly when OBA was added in wet end or applied in surface sizing respectively. The synergy of the two types OBA is obviously and cost-effectively. The brightness of the sheet reach the peak when the percentage of AP is 35~45%.

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Ponder, Kara A., W. Michael Wood-Vasey, Anja Weyant, et al. "Are Type Ia Supernovae in Rest-frame H Brighter in More Massive Galaxies?" Astrophysical Journal 923, no. 2 (2021): 197. http://dx.doi.org/10.3847/1538-4357/ac2d99.

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Abstract We analyze 143 Type Ia supernovae (SNe Ia) observed in H band (1.6–1.8 μm) and find that SNe Ia are intrinsically brighter in H band with increasing host galaxy stellar mass. We find that SNe Ia in galaxies more massive than 1010.43 M ⊙ are 0.13 ± 0.04 mag brighter in H than SNe Ia in less massive galaxies. The same set of SNe Ia observed at optical wavelengths, after width–color–luminosity corrections, exhibit a 0.10 ± 0.03 mag offset in the Hubble residuals. We observe an outlier population ( ∣ Δ H max ∣ > 0.5 mag) in the H band and show that removing the outlier population moves

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Hashimoto, Jun, Ruobing Dong, Takayuki Muto, Hauyu Baobab Liu, and Yuka Terada. "Shadowing in the Protoplanetary Disk of ZZ Tau IRS with HST." Astronomical Journal 167, no. 2 (2024): 75. http://dx.doi.org/10.3847/1538-3881/ad1b5e.

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Abstract An inner component misaligned from an outer component in a protoplanetary disk can result in the former casting shadows on the latter. We present a new instance of shadowing on the outer disk around a very-low-mass star, ZZ Tau IRS. Through the analysis of near-infrared (NIR) archival data at λ = 1.6 μm acquired with the Wide Field Camera 3 on the Hubble Space Telescope, we identified brightness asymmetries in the top and bottom halves of the highly inclined outer disk, separated by a dark lane. The brighter sides in the top and bottom halves are on the opposite sides, which we attrib

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Frei, Michelle S., Miroslaw Tarnawski, M. Julia Roberti, Birgit Koch, Julien Hiblot, and Kai Johnsson. "Engineered HaloTag variants for fluorescence lifetime multiplexing." Nature Methods 19, no. 1 (2021): 65–70. http://dx.doi.org/10.1038/s41592-021-01341-x.

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AbstractSelf-labeling protein tags such as HaloTag are powerful tools that can label fusion proteins with synthetic fluorophores for use in fluorescence microscopy. Here we introduce HaloTag variants with either increased or decreased brightness and fluorescence lifetime compared with HaloTag7 when labeled with rhodamines. Combining these HaloTag variants enabled live-cell fluorescence lifetime multiplexing of three cellular targets in one spectral channel using a single fluorophore and the generation of a fluorescence lifetime-based biosensor. Additionally, the brightest HaloTag variant showe

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Sun, ZhiXin, Xu Wang, XiaoJin He, ZhiWei Tan, ChunMing Liu, and Hang Zhou. "P‐5.27: Outdoor 55‐Inch 4K‐resolution and High‐Brightness Liquid Crystal Display." SID Symposium Digest of Technical Papers 55, S1 (2024): 989–92. http://dx.doi.org/10.1002/sdtp.17255.

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This work addresses the design and verification of an outdoor 55‐inch 4K‐resolution and high‐brightness liquid crystal display (LCD) product. The new pixel design is able to increase the module transmittance to as high as 6.24%. The amorphous silicon (a‐Si) thin film transistor (TFT) has excellent light‐ and temperature‐stability. The gate drive circuit has been improved to reduce the operating temperature by 5~7 â„ƒ. The brightness of the display is up to 4056 nits, which is the brightest known 55‐inch 4K‐resolution display product.

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Ali, Sinan H. "BVR CCD Photometric observation analysis of spiral galaxy Ic 467." Iraqi Journal of Physics (IJP) 12, no. 24 (2019): 81–86. http://dx.doi.org/10.30723/ijp.v12i24.325.

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The structure and composition of the stellar population in the surface brightness galaxy Ic 467 is studied using BVR CCD photometry. The observations were obtained on the 1.88m optical telescope of Kottamia Astronomical Observatory, KAO, Egypt. A two-dimensional decomposition of the galaxy bulge and disk components is carried out. A powerful star forming region is observed near the galactic center. Based on the positions of the various components of the galaxy in two color diagrams and the surface brightness of the eastern arms in V filter is brighter than the western arm. From the observation

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Biretta, J. A., M. J. Reid, W. Junor, R. Spencer, and T. Muxlow. "Sub-luminal Motion in M87." Symposium - International Astronomical Union 129 (1988): 37–38. http://dx.doi.org/10.1017/s0074180900133893.

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The galaxy M87 (3C274, NGC4486) contains one of the nearest jet sources in the northern hemisphere, and one of our best opportunities to study a jet in detail. We have made MkII VLBI observations of the nuclear jet at 1.66 GHz using 18 stations of the “World Array.” The array included Arecibo which greatly improved the north-south resolution. The data were global fringe fitted, and self-calibrated to remove both antenna and baseline amplitude and phase errors. The resulting map (Fig. 1) has a dynamic range of 2300:1 and reveals a very complex structure. At distances ≥50 mas from the core, the

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Payne, Paul. "Sky Brightness and Atmospheric Extinction at A.N.R.A.O., Parkes and Siding Spring Observatory." Publications of the Astronomical Society of Australia 6, no. 2 (1985): 182–86. http://dx.doi.org/10.1017/s1323358000018051.

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AbstractIn May 1984 site testing began for the Automated Patrol Telescope. A series of atmospheric extinction and night sky brightness measurements were made over the following year at Parkes and Siding Spring Mountain using B and V filters. Parkes revealed an extinction greater than that of Siding Spring and more prone to variation. Results for the night sky brightness indicated Parkes has a sky slightly brighter than that at Siding Spring. The paper discusses the procedures used for obtaining the results and their limitations.

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Zhu, Nianfang, Yan Tu, Lili Wang, and Yunyang Shi. "14‐3: Influence of Melanopic Luminance of Display Images on Brightness Perception and Cognitive Performance." SID Symposium Digest of Technical Papers 56, S1 (2025): 126–29. https://doi.org/10.1002/sdtp.18742.

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The effect of melanopic luminance of images on brightness perception and cognitive performance was explored on a 65‐inch four‐primary display system. The melanopic metamer of stimuli was modulated at two levels (higher and lower). The results by subjective brightness perception evaluation showed that stimulus at the higher melanopic luminance level appeared brighter but induced less comfort. Moreover, eye movements results revealed that higher fixation and saccade efficiency was obtained at the higher melanopic luminance level for improved cognitive performance when reading Chinese characters.

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Batalov, V. G., R. A. Stepanov, and A. U. Vasilev. "Quality estimation of the nozzle spray by measuring the brightness of the reflected light." Journal of Physics: Conference Series 2057, no. 1 (2021): 012083. http://dx.doi.org/10.1088/1742-6596/2057/1/012083.

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Abstract This paper presents the results of the laboratory and numerical experiments performed to measure the sizes of transparent liquid droplets sprayed in air. The results of the laboratory experiments were mainly obtained using the Glare Point Technique (GPT) which gave information about the droplet size and the brightness of the light reflected by drops. The relationship between the brightness of the light reflected from the surface of droplets and their sizes was analyzed. Theoretically, the brightness of light scattered by a single spherical drop is proportional to the drop surface area

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BĂJENESCU, Titu-Marius I. "Electroluminating Diodes (LEDs) for Lighting." Electrotehnica, Electronica, Automatica 72, no. 3 (2024): 71–77. http://dx.doi.org/10.46904/eea.23.72.3.1108008.

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Materials that make light-emitting diodes brighter and less power hungry open exciting new applications for semiconductor lamps. The emergence of high brightness emitters – with a number of advantages over conventional incandescent bulbs and halogen lamps – opened new markets to visible LEDs. White LEDs (WLEDs) are penetrating the portable and low wattage lighting market where ruggedness and compact source size are valued. Even though WLEDs may have a very long life, poorly designed WLED lighting systems can experience a short life. No industry standard exists for brightness levels.

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Chu, Hong Tao, Jin Qiu Zhang, and Mao Zhong An. "A Study of Bright Sn Electroplating Technology in Methanesulfonic Acid System." Advanced Materials Research 396-398 (November 2011): 1744–47. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1744.

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A bright tin coating was prepared by electrodeposition method in the electroplating system of methanesulfonic acid. The effects of methylsulfonic acid concentration, main salt concentration, current density and brightener on brightness of coating were investigated by orthogonal experiment. A plating process of bright tin was confirmed: concentration of methylsulfonic acid: concentration of Sn2+: current density: 2.5A/dm2, dosage of brightener: at the same time, current efficiency, throwing power, covering power and electrochemical behavior for the process were inspected systematically. And the

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Jyoti, S. Kavirajwar, and S. Basavanna. "Influence of a New Brightener on Electrodeposition of Zn-Ni Alloy." International Journal of Applied Engineering and Management Letters (IJAEML) 4, no. 1 (2020): 51–60. https://doi.org/10.5281/zenodo.3773923.

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Electroplating of Zinc-Nickel alloy on mild steel substrate was obtained in the presence of a new brightener on steel surface by electrodeposition technique. Effect of bath constituents, pH, current density, and temperature on the nature of deposit was studied by Hull cell experiments. The bath composition and operating parameters were optimized by Hull cell experiments. Further investigations on the surface characteristics of deposit were carried out by using SEM and Reflectance studies. SEM analysis in the presence of this brightener confirmed the change in surface morphology and reflectance

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Bartelmann, Matthias, and Ramesh Narayan. "Redshifts of Faint Blue Galaxies From Gravitational Lensing." Symposium - International Astronomical Union 173 (1996): 143–48. http://dx.doi.org/10.1017/s007418090023115x.

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The possibility to reconstruct cluster mass distributions from their gravitational lensing effects on background sources is now firmly established and is discussed in a number of other contributions to these proceedings. Here, we want to suggest a new method, the parallax method (Bartelmann & Narayan 1995), to infer the redshifts of the background sources, which are in general too faint to allow spectroscopy. The method is based on gravitational lensing, and apart from arclet redshifts it yields calibrated, accurate cluster reconstructions. The key idea is simple and rests on three facts:

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Putri, Aristia Wianing. "Pengukuran Kualitas Citra Menggunakan Aplikasi ImageJ pada Gambaran Vertebra Lumbosacral dengan Proyeksi Lateral Posisi Supine Kasus Low Back Pain (LBP)." Jurnal Imejing Diagnostik (JImeD) 9, no. 2 (2023): 103–11. http://dx.doi.org/10.31983/jimed.v9i2.10272.

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Background: This study aims to determine the measurement parameters of the imageJ software which can assess the quality of radiographic imae on clinical lumbosacral vertebra examination LBP by using a sample of radiographic image that has been obtained. This research conducted from March to April 2022 at STIKES An Nasher Cirebon.Methods: Study this method uses of pixel values obtained by the device imageJ software on images without any treatment, smoothing, sharpening, and brightness.Result: With the result obtained in smooth treatment did not differ when compared with no treatment an sufficie

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Yoshida, Takaho, Takeshi Kawasaki, Junji Endo, et al. "Development of a 1-MV Field-Emission Electron Microscope III. Electron Optical Design and Development of Field-Emission Electron Gun." Microscopy and Microanalysis 6, S2 (2000): 1142–43. http://dx.doi.org/10.1017/s1431927600038204.

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Bright and coherent electron beams have been opening new frontiers in science and technology. So far, we have developed several field-emission transmission electron microscopes (FE-TEM) with increasing accelerating voltages to provide higher beam brightness. By using a 200-kV FE-TEM and electron holography techniques, we directly confirmed the Aharonov-Bohm effect. A 350-kV FE-TEM equipped with a low-temperature specimen stage enabled us to observe moving vortices in superconductors.2 Most Recently, we have developed a new 1-MV FE-TEM with a newly designed FE gun to obtain an even brighter and

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Knödlseder, J., K. Bennett, H. Bloemen, et al. "26Al in the Local Interstellar Medium." International Astronomical Union Colloquium 166 (1997): 389–92. http://dx.doi.org/10.1017/s025292110007130x.

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AbstractWe estimate the 1.8 MeV luminosity of the Sco-Cen association due to radioactive decay of 26A1 to (4 – 15) 10−5ph cm−2 s−1. We propose a low surface brightness, limb brightened bubble for the 1.8 MeV intensity distribution. The detectibility of this distribution with existing γ-ray telescopes is discussed.

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Firdaus, Muhammad Dimas, Arwin Juli Rakhmadi Butar-Butar, Hariyadi Putraga, and Muhammad Hidayat. "ANALISIS DAMPAK POLUSI CAHAYA LAMPU ARTIFISIAL TERHADAP KECERLANGAN LANGIT MALAM MENGGUNAKAN SKY QUALITY METER." ELFALAKY 6, no. 2 (2022): 197–206. http://dx.doi.org/10.24252/ifk.v6i2.33787.

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The brightness of the night sky is a necessity in astronomical observations. Sky with minimal light pollution can be optimized for observation and research. Light pollution is an obstacle in astronomical observations, one of the light pollution that affects the night sky a lot is artificial lights that are not properly conditioned. In this study, it is explained how the impact of artificial lights on good sky brightness using the Sky Quality Meter (SQM). By observing several nights, it was found that locations with a lot of light exposure can make the sky brighter ~3.3 times compared to locati

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Sholukhova, O., A. Zharova, S. Fabrika, and D. Malinovskii. "Complex Pulsation-Like Variability of the LBV Star v532 in M33." International Astronomical Union Colloquium 185 (2002): 522–23. http://dx.doi.org/10.1017/s0252921100016985.

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AbstractWe present an analysis of a light curve of LBV star v532 (Romano’s star) in M33. The data consist of 881 individual photographic observations from 1960 to 2000. The star shows extremely rich periodic variations. We find that the amplitudes of the periods depend on brightness, as they rise when the star becomes brighter. We suggest that the 13.08-day period corresponds to the star’s rotation, other short periods (∼ 20 – 30 days) represent the star’s pulsations, and the longer periods are instability driven wind pulsations. The spectral variability of v532 is also strong, with the spectr

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Jones, P. A. "The Fanaroff-Riley Classification of Southern Extragalactic Radio Sources." Publications of the Astronomical Society of Australia 8, no. 3 (1990): 254–56. http://dx.doi.org/10.1017/s1323358000023456.

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AbstractA sample of 339 extragalactic radio sources, noted as extended or multiple in the Molonglo Reference Catalogue, has been observed with the Molonglo Observatory Synthesis Telescope at 843 MHz. It is found that the strong sources all have edge-brightened morphology, while weak sources may be edge-brightened or edge-darkened. The morphological classification of Fanaroff and Riley is not a sharp division by luminosity. The degree of edge-darkening or edge-brightening is better parametrised by one-dimensional moments along the major axis than by the ratio of the separation between brightnes

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Pinna, Baingio, Lothar Spillmann, and John S. Werner. "Anomalous Induction of Brightness and Surface Qualities: A New Illusion Due to Radial Lines and Chromatic Rings." Perception 32, no. 11 (2003): 1289–305. http://dx.doi.org/10.1068/p3475.

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When a chromatic (eg light-blue) annulus surrounds the central gap of an Ehrenstein figure so as to connect the inner ends of the radial lines, a striking new lightness effect emerges: the central white disk has both a self-luminous quality (brighter than in the regular Ehrenstein figure) and a surface quality (dense, paste-like). Self-luminous and surface qualities do not ordinarily appear co-extensively: hence, the brightness induction is called anomalous. In experiment 1, subjects separately scaled self-luminous and surface properties, and in experiment 2, brightness was nulled by physicall

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Boley, Aaron C., Ewan Wright, Samantha Lawler, Paul Hickson, and Dave Balam. "Plaskett 1.8 m Observations of Starlink Satellites." Astronomical Journal 163, no. 5 (2022): 199. http://dx.doi.org/10.3847/1538-3881/ac5599.

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Abstract We present observations of 23 Starlink satellites in the g′ bandpass, obtained from the Dominion Astrophysical Observatory’s Plaskett 1.8 m telescope. The targets include a mixture of satellites with and without brightness mitigation measures (i.e., visors). At the time of the observations (2021 July 16), Starlink satellites were sunlit throughout the night, and, even with strict elevation and azimuth limits, there were over 800 candidate Starlink arcs. The satellites altogether have a median range corrected brightness (550 km) of H ¯ g 550 = 5.3 mag. Dividing the targets into those w

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Christman, Locke. "Optimization of LaB6 Cathode Tip Shape for Maximum Brightness Over Lifetime." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 1 (1990): 430–31. http://dx.doi.org/10.1017/s0424820100180902.

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LaB6 cathodes are widely used as high brightness cathodes in electron microscopy and are capable of providing about five times the brightness of a tungsten hairpin filament. It is desirable to optimize the shape of the LaB6 tip to provide the highest possible brightness and to insure that this high level of brightness is maintained over the life of the cathode.It is well known that a high brightness electron beam is important in obtaining ultimate resolution in electron microscopy. Brightness is defined as the current density per unit solid angle, or amperes per square centimeter per steradian

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Kobayashi, Yuki, Daniele Zavagno, and Kazunori Morikawa. "Asymmetric Brightness Effects With Dark Versus Light Glare-Like Stimuli." i-Perception 12, no. 1 (2021): 204166952199314. http://dx.doi.org/10.1177/2041669521993144.

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The glare effect is a brightness illusion that has captured the attention of the vision community since its discovery. However, its photometrical reversal, which we refer to here as photometrical reversed glare (PRG) stimuli, remained relatively unexplored. We presented three experiments that sought to examine the perceived brightness of a target area surrounded by luminance gradients in PRG stimuli and compare them with conventional glare effect configurations. Experiment 1 measured the brightness of the central target area of PRG stimuli through an adjustment task; the results showed that th

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Shimakura, Hitomi, and Katsuaki Sakata. "Desaturation-Induced Brightness in Face Color Perception." i-Perception 10, no. 3 (2019): 204166951985478. http://dx.doi.org/10.1177/2041669519854782.

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The distinctiveness of perception of face from nonface objects has been noted previously. However, face brightness is often confounded with whiteness in the beauty industry; few studies have examined these perceptual differences. To investigate the interactions among face color attributes, we measured the effect of saturation on brightness and whiteness in both uniform color patches and face images to elucidate the relationship between these two perceptions. We found that, at constant luminance, a uniform color patch looked brighter with an increase in saturation (i.e., the Helmholtz–Kohlrausc

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