Results 21 to 30 of about 105,352 (124)
Investigation of the properties of alkline peroxide mechanical pulp(APMP) from Cotton Stalk [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2010 This study was conducted to investigate the properties of cotton stalks APMP pulp. APMP prepared from chipped cotton stalks. the pulps were prepared separately from debarked and bark containing stalks using three two-stage treatments.Sodium hydroxide ...
Hossein Shob chary +2 more
doaj +1 more source
Bright solitons in spin-orbit-coupled Bose-Einstein condensates [PDF]
Physical Review A 87, 013614 (2013), 2012 We study bright solitons in a Bose-Einstein condensate with a spin-orbit coupling that has been realized experimentally. Both stationary bright solitons and moving bright solitons are found. The stationary bright solitons are the ground states and possess well-defined spin-parity, a symmetry involving both spatial and spin degrees of freedom; these ...
arxiv +1 more source
Papermaking Properties of Carpinus betulus with kraft, Soda and Soda-Urea Pulping Processes [PDF]
Iranian Journal of Wood and Paper Industries, 2013 This research was carried out in order to comparatively investigate the hornbeam kraft, soda and soda-urea papermaking properties. The selected treatment in kraft process had an average yield of 44.43% and kappa number of 23.75.
Rasoul Darstan +2 more
doaj
Journal of Information Display, 2021 A psychophysical experiment was conducted to compare the discomfort luminance level and the brightness of a head-mounted display (HMD). The results showed that as the size of the HMD stimulus increased, both the discomfort luminance level of the HMD and ...
Hyeyoung Ha +4 more
doaj +1 more source
Evidence for a Non-Expanding Universe: Surface Brightness Data From HUDF [PDF]
AIP Conf.Proc.822:60-74,2006, 2005 Surface brightness data can distinguish between a Friedman-Robertson-Walker expanding universe and a non-expanding universe. For surface brightness measured in AB magnitudes per angular area, all FRW models, regardless of cosmological parameters, predict that surface brightness declines with redshift as (z+1)^-3, while any non-expanding model predicts ...
arxiv +1 more source
The potential of acid pre-hydrolyzed Soda-AQ process to manufacture highly purified α-cellulose [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2015 This research was performed to evaluate the potential of acid pre-hydrolysis soda-AQ process for the production of dissolving pulp including high α-cellulose content from Populus deltoides.
Mostafa Nikkhah Dafchahi +1 more
doaj +1 more source
The Eye Pupil Adjusts to Illusorily Expanding Holes
Frontiers in Human Neuroscience, 2022 Some static patterns evoke the perception of an illusory expanding central region or “hole.” We asked observers to rate the magnitudes of illusory motion or expansion of black holes, and these predicted the degree of dilation of the pupil, measured with ...
Bruno Laeng +2 more
doaj +1 more source
Do Low Surface Brightness galaxies host stellar bars? [PDF]
, 2017 With the aim of assessing if low surface brightness galaxies host stellar bars, and study the dependence of the occurrence of bars as a function of surface brightness, we use the Galaxy Zoo 2 dataset to construct a large volume-limited sample of galaxies, and segregate the galaxies as low and high surface brightness in terms of their central surface ...
arxiv +1 more source
IET Optoelectronics, 2022 With the emergence of the different light‐emitting diode (LED) packaging materials, the thermal analysis of LED device packaging with different materials has become urgent. The thermal performance of LED packaging with a poly(1,4‐cyclohexylenedimethylene
Dezhi Zhao +3 more
doaj +1 more source
Rebound-through transition of bright-bright solitons collision in two species condensates with repulsive interspecies interactions [PDF]
, 2012 We study the dynamical properties of bright-bright solitons in two species Bose-Einstein condensates with the repulsive interspecies interactions under the external harmonic potentials by using a variational approach combined with numerical simulation.
arxiv +1 more source