Results 31 to 40 of about 624,360 (350)
Intrinsic Brightness Temperature of Compact Radio Sources at 86 GHz [PDF]
, 2013 We present results on the intrinsic brightness temperature of a sample of compact radio sources observed at 86 GHz using the Global Millimeter VLBI Array.
Lee, Sang-Sung
core +1 more source
Consecutive Bright Pulses in the Vela Pulsar [PDF]
2011, ApJ, 735, L17, 2011 We report on the discovery of consecutive bright radio pulses from the Vela pulsar, a new phenomenon that may lead to a greater understanding of the pulsar emission mechanism. This results from a total of 345 hr worth of observations of the Vela pulsar using the University of Tasmania's 26 m radio telescope to study the frequency and statistics of ...
arxiv +1 more source
Lightness and brightness [PDF]
Current Biology, 2007 What is lightness? Lightness is the perceptual dimension that runs from black, through gray, to white. The physical counterpart of lightness is the permanent property of a surface that determines what percentage of light the surface reflects. Surfaces that appear white reflect about 90% of the light striking them. Black surfaces reflect about 3%.
openaire +3 more sources
Química Nova, 2011 Samples of Kaolin from different regions in Brazil were characterized by XRD, SEM and chemical analysis. A chemical bleaching study with pH adjustment was accomplished with the fractions below 37 μm, after classification by screening.
Fernanda Arruda Nogueira Gomes da Silva +6 more
doaj +1 more source
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds
Bioscience Journal, 2022 This study aimed to evaluate the effects of different sowing depths and light intensities on the emergence and development of the monocot weed species, Urochloa decumbens and Cenchrus echinatus, under field conditions.
Ricardo Fagundes Marques +4 more
doaj +1 more source
Journal of General and Family Medicine, 2018 The spine is homogeneously osteosclerotic and which appears to have no particular abnormal findings, however, that was proved to be a result of multiple metastases from prostate cancer. We should consider the possibility of prostate cancer if we see a "bright spine" on X-ray examination.
Ogushi, Akihiko +2 more
openaire +2 more sources
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
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
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