Surface Brightness Gradients Produced by the Ring Waves of Star Formation [PDF]
, 1997 We compute surface brightness profiles of galactic disks for outwardly propagating waves of star formation with a view to investigate the stellar populations in ring galaxies. We consider two mechanisms which can create outwardly propagating star forming
A. K. Kembhavi +9 more
core +3 more sources
Perception of Brightness and Brightness Illusions in the Macaque Monkey [PDF]
The Journal of Neuroscience, 2002 Recent physiological studies show that neural responses correlated with the perception of brightness are found in cortical area V1 but not earlier in the visual pathway (Kayama et al., 1979; Reid and Shapley, 1989; Squatrito et al., 1990; Komatsu et al., 1996; Rossi et al., 1996; MacEvoy et al., 1998; Rossi and Paradiso, 1999; Hung et al., 2001 ...
Sean P. MacEvoy +2 more
openaire +3 more sources
Normal Globular Cluster Systems in Massive Low Surface Brightness Galaxies [PDF]
, 2007 We present the results of a study of the globular cluster systems of 6 massive spiral galaxies, originally cataloged as low surface brightness galaxies but here shown to span a wide range of central surface brightness values, including two intermediate ...
Andrés Jordán +26 more
core +1 more source
Evidence for coloration plasticity in the yellow‐bellied toad, Bombina variegata
Ecology and Evolution, 2021 Phenotypic adaptation in terms of background color matching to the local habitat is an important mechanism for survival in prey species. Thus, intraspecific variation in cryptic coloration is expected among localities with dissimilar habitat features (e ...
Kathleen Preißler +2 more
doaj +1 more source
A Comparison Between Alkali Peroxide and Activated Peroxide Processes in Bleaching Hardwoods Chemi-mechanical Pulp [PDF]
Iranian Journal of Wood and Paper Industries, 2013 Unbleached chemi-mechanical pulp of 85% pulp yield and produced from hornbeam, beech and populus woods respectively by 3:1:1 ratio, was used for peroxide bleaching. Two bleaching systems, alkali peroxide (conventional bleaching) and activated peroxide by
Farhad Zeyni, M.Reza Dehghani
doaj
The effect of using deinked mixed office waste pulp on the properties of Alkaline Proxide Mechanical Pulp from cotton stalk [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2016 The present study was carried out aiming to investigate the effect of using Deinked Mixed Office Waste Pulp (MOW) on the properties of Alkaline Peroxide Mechanical Pulp (APMP) from cotton stalk.
Mehrnoosh Tavakoli +3 more
doaj +1 more source
Effects of energy spread on Brightness and Coherence of undulator sources [PDF]
, 2018 The (spectral) brightness for partially transverse coherent sources as Synchrotron Radiation (SR) and Free-Electron Laser (FEL) sources can be defined as the maximum of the Wigner distribution.
Geloni, Gianluca +4 more
core +2 more sources
Metrological characteristics of the Tensor-28 luminance meter [PDF]
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2007 The paper presents research results on metrological characteristics of the luminance meter "Tensor-28", designed to measure average screen brightness of picture tubes and other self-luminous surfaces.
Fodchuk I. M. +4 more
doaj
The effects of pre-treatment and consistency on treatment time and brightness of bagasse alkaline peroxide mechanical pulp [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2012 Preparation and pre-treatment of raw material influences the pulp production time and color elimination. Pulp consistency during the treatment also influences the color reaction.
Saeideh Sharifi +2 more
doaj +1 more source
Keck/LRIS Spectroscopic Confirmation of Coma Cluster Dwarf Galaxy Membership Assignments
, 2010 Keck/LRIS multi-object spectroscopy has been carried out on 140 of some of the lowest and highest surface brightness faint (19 < R < 22) dwarf galaxy candidates in the core region of the Coma Cluster.
Adami +30 more
core +1 more source