Results 81 to 90 of about 277,653 (299)
Review on studies in natural background radiation
Radiation Protection and Environment, 2018 The environment around us is radioactive due to background radiation emitted from the sky, earth's crust, food, water, and building materials. The human body gets exposed to radiation doses of about 82%, which are out of control; they arise from ...
Abdu Hamoud Al-Khawlany +2 more
doaj +1 more source
A Bridge from Optical to Infrared Galaxies: Explaining Local Properties and Predicting Galaxy Counts and the Cosmic Background Radiation [PDF]
, 2002 We give an explanation for the origin of various properties observed in local infrared galaxies and make predictions for galaxy counts and cosmic background radiation (CBR) using a new model extended from that for optical/near-infrared galaxies ...
T. Totani, T. Takeuchi
semanticscholar +1 more source
Molecular Carcinogenesis, EarlyView.ABSTRACT Ultraviolet A (UVA) radiation induces DNA damage both directly, by forming cyclobutane pyrimidine dimers (CPDs), and indirectly, by generating oxidative stress. Cells rely on nucleotide excision repair (NER) and translesion synthesis (TLS) to tolerate these lesions.
Camila Corradi +7 more
wiley +1 more source
Does the Correlation between 2MRS Galaxies and the CMB Indicate an Unmodeled CMB Foreground?
The Astrophysical JournalWe revisit the claimed detection of a new cosmic microwave background (CMB) foreground based on the correlation between low-redshift Two Micron All Sky Survey Redshift Survey (2MRS) galaxies and CMB temperature maps from the Planck and Wilkinson ...
Graeme E. Addison
doaj +1 more source
Correlations between 21 cm Radiation and the CMB from Active Sources
, 2010 Neutral hydrogen is ubiquitous, absorbing and emitting 21 cm radiation throughout much of the Universe's history. Active sources of perturbations, such as cosmic strings, would generate simultaneous perturbations in the distribution of neutral hydrogen ...
Aaron Berndsen +39 more
core +1 more source
Radiometer system to map the cosmic background radiation [PDF]
Review of Scientific Instruments, 1978 We have developed a 33-GHz airborne radiometer system to map large angular scale variations in the temperature of the 3 K cosmic background radiation. A ferrite circulator switches a room-temperature mixer between two antennas pointing 60° apart in the sky.
Gorenstein, Marc V. +3 more
openaire +5 more sources
Vessel segmentation for χ$$ \chi $$‐separation in quantitative susceptibility mapping
Magnetic Resonance in Medicine, EarlyView.Abstract Purpose χ$$ \chi $$‐separation is an advanced quantitative susceptibility mapping (QSM) method that is designed to generate paramagnetic (χpara$$ {\chi}_{para} $$) and diamagnetic (|χdia|$$ \mid {\chi}_{dia}\mid $$) susceptibility maps, reflecting the distribution of iron and myelin in the brain.
Taechang Kim +7 more
wiley +1 more source
Revisiting the A L Lensing Anomaly in Planck 2018 Temperature Data
The Astrophysical JournalWe revisit the lensing anomaly in the Planck 2018 temperature (TT) data and examine its robustness to frequency selection and additional sky masking. Our main findings are as follows.
Graeme E. Addison +4 more
doaj +1 more source
Iraqi Journal of Physics, 2019 The aim of this work was directed to measure the cosmic ray (CR) flux and the background (BG) absorbed dose rate for districts of Baghdad city. The maximum values of CR flux was 2.01 (particle/cm2.s) registered for several Baghdad districts and the ...
Shafik S. Shafik
doaj +1 more source
The Atacama Cosmology Telescope: Systematic Transient Search of 3 Day Maps
The Astrophysical Journal, 2023 We conduct a systematic search for transients in 3 yr of data (2017–2019) from the Atacama Cosmology Telescope (ACT). ACT covers 40% of the sky at three bands spanning from 77–277 GHz. Analysis of 3 day mean-subtracted sky maps, which were match filtered
Yaqiong Li +36 more
doaj +1 more source