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Wyszukujesz frazę "Natural radioactivity" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Measurement the natural radioactivity of Sheep meat samples from Karbala governorate
    Autorzy:
    Kadhum, Nada Farhan
    Omron, Auras Muse
    Powiązania:
    https://bibliotekanauki.pl/articles/1078152.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    HPGe detector
    Natural radioactivity
    Soil samples
    Wassit governorate
    Opis:
    In this paper, the measurement of natural radioactivity in Sheep meat samples from different regions of Karbala governorate by using (Na(Tl)) detector. The results of measurements have shown that the specific activity and the determination of some other related parameters such as (Raeq , Hin, Iɣ, Iα, DƔ, Eff dos and AGDE). In fourteen four sheep meat samples by using NaI(Tl) detector. The results have shown that, the mean specific activity of (40K, 238U and 232Th) which were (6.813±1.82 Bq/kg, 3.865±1.033 Bq/kg and 1.02±1.03), respectively, were found to be less than the recommended values of specific activity given by (UNSCEAR, 2000).
    Źródło:
    World News of Natural Sciences; 2019, 22; 110-118
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Radioactivity Levels and Radiation Hazards for Plants Species Grown at Scrap Yard (A) at Al-Tuwaitha Nuclear Site (Iraq)
    Autorzy:
    Zayir Al-Bakhat, Yousif Muhsin
    Mansour, Hazim Louis
    Karkoush, Huda Nassar
    Powiązania:
    https://bibliotekanauki.pl/articles/1179001.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Al-Tuwaitha Nuclear Site
    Natural radioactivity
    plants species
    radiological hazards
    Opis:
    Knowledge of radionuclides concentrations in environmental media (such as common plants species) plays an important role in environmental protection and monitoring of any release of radioactivity to the environment. The activity concentrations and distribution of natural radionuclides in plants samples grown at scrap yard (A) (Al-Tuwaitha Nuclear Site) were investigated in this study. The measurements were carried out using gamma-ray spectrometry system (high purity germanium detector). The average and range of the activity concentrations of 226Ra and 40K were 0.19 (BDL to 2.92 Bq/kg) and 660.86 (510 to 796.49 Bq/kg). The radium equivalent activity, absorbed dose rate, annual effective dose equivalent, external and internal hazard indices were estimated and compared with internationally recommended values. The results of radiological hazards assessment obtained in this study indicated that the investigated plants species grown at the studied area have natural radioactivity levels well within internationally recommended limits.
    Źródło:
    World Scientific News; 2017, 87; 114-124
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiological Dose and Risk Assessment for Selected Residential Regions in Baghdad City, Iraq
    Autorzy:
    Sabri, Areej Adnan
    Al-Tameemi, Nabeel Hashim Ameen
    Abdulwahid, Safaa Talib
    Mohammad, Abbas Neamah
    Powiązania:
    https://bibliotekanauki.pl/articles/1071454.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    137Cs
    232Th
    238U
    40K
    Baghdad
    Natural radioactivity
    RESRAD code
    radiological hazards
    radionuclides
    Opis:
    Fifty-one surface soil samples were collected from two selected residential areas in Baghdad city (Al-Adhamiya and Al-Sha’ab areas) and analyzed using gamma-ray spectroscopy system. The activity concentrations of 238U, 232Th, 40K and 137Cs for soil samples collected from Al-Adhamiya area ranged from 9.19 to 22.7 Bq/kg, 5.91 to 17.8 Bq/kg, 236.36 to 507.56 Bq/kg and below minimum detectable activity to 3.07 Bq/kg, respectively. For soil samples collected from Al-Sha’ab area, the activity concentrations of 238U, 232Th, 40K and 137Cs ranged from 9.21 to 24.51 Bq/kg, 6.41 to 16.81 Bq/kg, 246.32 to 402.78 Bq/kg and below minimum detectable activity to 4.8 Bq/kg, respectively. The RESRAD-Onsite code version 7.2 has been used to evaluate radiation dose and risk for the occupants of the areas of the study. The maximum total dose rates of 0.204 and 0.245 mSv/y were estimated for Al-Adhamiya and Al-Sha’ab areas, respectively. The total peak dose rates are about 5 times lower than the public radiation dose limit of 1 mSv/y. Based on the findings of the current study, it can be concluded that occupants in the investigated areas would not get any unacceptable radiological hazards due to radionuclides in soil.
    Źródło:
    World Scientific News; 2019, 122; 71-82
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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