Results 41 to 50 of about 140,038 (258)

A review on natural background radiation

Advanced Biomedical Research, 2013
The world is naturally radioactive and approximately 82% of human-absorbed radiation doses, which are out of control, arise from natural sources such as cosmic, terrestrial, and exposure from inhalation or intake radiation sources.
Daryoush Shahbazi-Gahrouei, Mehrdad Gholami, Samaneh Setayandeh   +2 more
doaj   +1 more source

Peak-peak correlations in the cosmic background radiation from cosmic strings

, 2013
We examine the two-point correlation function of local maxima in temperature fluctuations at the last scattering surface when this stochastic field is modified by the additional fluctuations produced by straight cosmic strings via the Kaiser-Stebbins ...
Javanmardi, B., Movahed, M. Sadegh, Sheth, Ravi K.   +2 more
core   +1 more source

Robust C–V Ratio Technique for Profiling Defects in Proton‐Irradiated 4H‐SiC

Advanced Electronic Materials, EarlyView.
A noise‐robust C–V ratio technique is introduced to profile radiation‐induced defects in proton‐irradiated 4H‐SiC Schottky diodes. By using analytical capacitance ratios instead of numerical differentiation, the method directly extracts trap‐density and effective trap‐energy profiles at room temperature.
Kibeom Kim, Sung Yun Woo, Jeong Hyun Moon, Young Jun Yoon, Jae Hwa Seo   +4 more
wiley   +1 more source

Effect of Cosmic UV Background on Star Formation in High Redshift Galaxies

, 2010
The effect of the cosmic UV background on star formation in high redshift galaxies is explored by means of high resolutions cosmological simulations.
Ceverino, Chen, Faucher-Giguère, Gnedin, Gnedin, Gnedin, Górski, Haardt, Hambrick, Katz, Kravtsov, Kravtsov, Kravtsov, Krumholz, Krumholz, Mathis, Miralda-Escudé, Navarro, Rudd, Schaye, Schaye, Wolfe   +21 more
core   +1 more source

Integrating Automated Electrochemistry and High‐Throughput Characterization with Machine Learning to Explore Si─Ge─Sn Thin‐Film Lithium Battery Anodes

Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
A closed‐loop, data‐driven approach facilitates the exploration of high‐performance Si─Ge─Sn alloys as promising fast‐charging battery anodes. Autonomous electrochemical experimentation using a scanning droplet cell is combined with real‐time optimization to efficiently navigate composition space.
Alexey Sanin, Jackson K. Flowers, Tobias H. Piotrowiak, Frederic Felsen, Leon Merker, Alfred Ludwig, Dominic Bresser, Helge Sören Stein   +7 more
wiley   +1 more source

Probing the Global 21 cm Background by Velocity-induced Dipole and Quadrupole Anisotropies

The Astrophysical Journal
The motion of an observer in the rest frame of the cosmic 21 cm background induces an anisotropy in the observed background, even when the background is isotropic.
Selim C. Hotinli, Kyungjin Ahn
doaj   +1 more source

Long range correlation in cosmic microwave background radiation

, 2011
We investigate the statistical anisotropy and Gaussianity of temperature fluctuations of Cosmic Microwave Background radiation (CMB) data from {\it Wilkinson Microwave Anisotropy Probe} survey, using the multifractal detrended fluctuation analysis ...
C. L. Alados, D. Novikov, F. Bernardeau, F. Ghasemi, H. E. Hurst, H. O. Peitgen, J. A. Peacock, J. Feder, J. M. Hausdorff, J. R. Bond, K. Schwarzschild, M. Reza Rahimi Tabar, M. Sadegh Movahed, P. Coles, R. N. Mantegna, Sohrab Rahvar, T. Fukushige, V. F. Mukhanov   +17 more
core   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Integrated Galaxy Light from Stacking 105 Random Pointings in the Dark Energy Survey Data

The Astrophysical Journal
We present a new technique for measuring the integrated galaxy light (IGL) with stacked image data from the Dark Energy Survey (DES). We extract 1′ × 1′ cutouts from nearly 100,000 randomly selected positions in the g, r, i, z, and Y bands from the DES ...
Jenna E. Moore, Seth H. Cohen, Philip Mauskopf, Evan Scannapieco   +3 more
doaj   +1 more source

Imprints of Relic Gravitational Waves in Cosmic Microwave Background Radiation [PDF]

, 2006
A strong variable gravitational field of the very early Universe inevitably generates relic gravitational waves by amplifying their zero-point quantum oscillations.
A. G. Polnarev, A. G. Polnarev, A. N. Varshalovich, B. G. Keating, D. Baskaran, L. P. Grishchuk, L. D. Landau, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, M. M. Basko, N. Kaiser, P. D. Naselskii, P. J. E. Peebles, R. A. Frewin, S. Chandrasekhar, V. N. Lukash, Ya. B. Zel’dovich, Ya. B. Zel’dovich   +23 more
core   +2 more sources