English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The activity levels of  40 K,  238 U, and  232 Th radionuclides in soil and associated radiological risk in rice field 1 and field 2 located in Ezillo, Ebonyi State, Nigeria were investigated in this study. Topsoil soil samples at depths 0–4 cm and 4–8 cm were collected before planting (BP), after planting (AP) and during harvesting (DH) stages. The activities of the radionuclides in the soil were measured by gamma spectrometric technique employing NaI(TI) detector. The results indicate that the activity concentrations of the radionuclides in the paddy fields, in all stages and depths, are higher than those obtained from the control site. The activity concentrations of the radionuclides across the farming stages indicated this order of DH &gt; AP &gt; BP for  238 U in both fields at both depths; DH &gt; BP &gt; AP at both depths in field 1 and at depth 4–8 cm in field 2 and DH &gt; AP &gt; BP at depth 0–4 cm in field 2 for  232 Th; while for  40 K, the orders are DH &gt; BP &gt; AP at depth 0–4 and DH &gt; AP &gt; BP at depth 4–8 cm in field 1 and AP &gt; DH &gt; BP at both depths in field 2. The radionuclides activities in both fields indicate this order  40 K &gt;  238 U &gt;  232 Th in all the stages and depths. The mean activities of the radionuclides determined before and after planting stages in both fields and at both depths were below UNSCEAR world average levels of 420 ( 40 K), 33 ( 238 U), and 45 ( 232 Th) Bqkg −1 . Only  40 k has a value below the world average during harvesting. The values of the examined radiological risk indices in the paddy fields in all the stages and depths were all higher than those of the control site. All the risk indices across the farming stages indicate that DH &gt; AP &gt; BP in both fields. Only the risk indices estimated during harvesting were higher than the respective permissible limit. The risk assessment shows that while the radiation doses from  232 Th,  238 U and  40 K before and after planting stages do not constitute any threat to the farmers at this present moment, those during the harvesting stages present some levels of threat.

environmental forensics

Natural radioactivity levels of  238 U,  232 Th and  40 K and radiological risk assessment in paddy soil of Ezillo rice fields in Ebonyi State, Nigeria