نتایج جستجو برای: high background radiation areas hbras

تعداد نتایج: 3143180  

2000
I. Hayata

INTRODUCTION Effect of low dose radiation on health is an important subject in the field of radiation protection. There are several places in the world where the level of natural radiation is much higher than in other areas. Epidemiological and cytogenetical studies on the people in such areas provide good information about the effect of low dose radiation on health. We performed the cytogeneti...

1997
G. F. Smoot D. Scott

The observed cosmic microwave background (CMB) radiation provides strong evidence for the hot big bang. The success of pri-mordial nucleosynthesis calculations (see Sec. 16, " Big-bang nucle-osynthesis ") requires a cosmic background radiation (CBR) characterized by a temperature kT ∼ 1 MeV at a redshift of z ≃ 10 9. In their pioneering work, Gamow, Alpher, and Herman [1] realized this and pred...

2000
T. Lu

There have been great and rapid progresses in the field of γ-ray bursts (denoted as GRBs) since BeppoSAX and other telescopes discovered their afterglows in 1997. Here, we will first give a brief review on the observational facts of GRBs and direct understanding from these facts, which lead to the standard fireball model. The dynamical evolution of the fireball is discussed, especially a generi...

1997
L. A. Anchordoqui M. T. Dova L. N. Epele

In this work we reexamine the opacity of the cosmic background radiation to the propagation of extremely high energy cosmic rays. We use the continuous energy loss approximation to provide spectral modification factors for several hypothesized cosmic ray sources. Earlier problems with this approximation are resolved including the effects of resonances other than the ∆.

Journal: :Journal of radiological protection : official journal of the Society for Radiological Protection 2016
N Adachi V Adamovitch Y Adjovi K Aida H Akamatsu S Akiyama A Akli A Ando T Andrault H Antonietti S Anzai G Arkoun C Avenoso D Ayrault M Banasiewicz M Banaśkiewicz L Bernardini E Bernard E Berthet M Blanchard D Boreyko K Boros S Charron P Cornette K Czerkas M Dameron I Date M De Pontbriand F Demangeau Ł Dobaczewski L Dobrzyński A Ducouret M Dziedzic A Ecalle V Edon K Endo T Endo Y Endo D Etryk M Fabiszewska S Fang D Fauchier F Felici Y Fujiwara C Gardais W Gaul L Gurin R Hakoda I Hamamatsu K Handa H Haneda T Hara M Hashimoto T Hashimoto K Hashimoto D Hata M Hattori R Hayano R Hayashi H Higasi M Hiruta A Honda Y Horikawa H Horiuchi Y Hozumi M Ide S Ihara T Ikoma Y Inohara M Itazu A Ito J Janvrin I Jout H Kanda G Kanemori M Kanno N Kanomata T Kato S Kato J Katsu Y Kawasaki K Kikuchi P Kilian N Kimura M Kiya M Klepuszewski E Kluchnikov Y Kodama R Kokubun F Konishi A Konno V Kontsevoy A Koori A Koutaka A Kowol Y Koyama M Kozioł M Kozue O Kravtchenko W Kruczała M Kudła H Kudo R Kumagai K Kurogome A Kurosu M Kuse A Lacombe E Lefaillet M Magara J Malinowska M Malinowski V Maroselli Y Masui K Matsukawa K Matsuya B Matusik M Maulny P Mazur C Miyake Y Miyamoto K Miyata M Miyazaki M Molȩda T Morioka E Morita K Muto H Nadamoto M Nadzikiewicz K Nagashima M Nakade C Nakayama H Nakazawa Y Nihei R Nikul S Niwa O Niwa M Nogi K Nomura D Ogata H Ohguchi J Ohno M Okabe M Okada Y Okada N Omi H Onodera K Onodera S Ooki K Oonishi H Oonuma H Ooshima H Oouchi M Orsucci M Paoli M Penaud C Perdrisot M Petit A Piskowski A Płocharski A Polis L Polti T Potsepnia D Przybylski M Pytel W Quillet A Remy C Robert M Sadowski M Saito D Sakuma K Sano Y Sasaki N Sato T Schneider C Schneider K Schwartzman E Selivanov M Sezaki K Shiroishi I Shustava A Śniecińska E Stalchenko A Staroń M Stromboni W Studzińska H Sugisaki T Sukegawa M Sumida Y Suzuki K Suzuki R Suzuki H Suzuki W Świderski M Szudejko M Szymaszek J Tada H Taguchi K Takahashi D Tanaka G Tanaka S Tanaka K Tanino K Tazbir N Tcesnokova N Tgawa N Toda H Tsuchiya H Tsukamoto T Tsushima K Tsutsumi H Umemura M Uno A Usui H Utsumi M Vaucelle Y Wada K Watanabe S Watanabe K Watase M Witkowski T Yamaki J Yamamoto T Yamamoto M Yamashita M Yanai K Yasuda Y Yoshida A Yoshida K Yoshimura M Żmijewska E Zuclarelli

Twelve high schools in Japan (of which six are in Fukushima Prefecture), four in France, eight in Poland and two in Belarus cooperated in the measurement and comparison of individual external doses in 2014. In total 216 high-school students and teachers participated in the study. Each participant wore an electronic personal dosimeter 'D-shuttle' for two weeks, and kept a journal of his/her wher...

2001
Ray J. Weymann Stuart N. Vogel Sylvain Veilleux

We report a new Fabry-Perot search for Hα emission from the intergalactic cloud HI 1225+01 in an attempt to measure the low redshift ionizing background radiation. We set a new 2σ upper limit on Hα emission of 8 mR (5 × 10 ergs cm s arcsec). Conversion of this limit to limits on the strength of

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