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

Natural radioactivity is diffuse in earth’s environment and occurs in various geological formations like sand, soil and rocks as well as in plants, water and air. Among the various building materials, river sediment is commonly used in building constructions. Sediment samples were collected from Thamirabarani river belt, Tamilnadu, India. Radiometric analysis was carried out using Gamma ray spectrometry for the sediment samples in this area. Activity concentrations of the natural radionuclides such as  226 Ra,  232 Th and  40 K were determined and other radiological parameters were calculated. The average activity concentration values for  226 Ra,  232 Th and  40 K were 40.85, 51.87 and 838.19 Bq kg −1 , respectively. Radium equivalent (Ra eq ), absorbed dose rate (D R ), annual effective dose equivalent (AEDE), hazard indices (H ex  and H in ) and activity utilisation index (AUI) were also calculated and compared with world average values. The mean values of the radiological parameters are less than the recommended limit. Hence, there is no radiological hazard involved in using river sediments for construction from in this study area.

Measurement of natural radioactivity in river sediments of Thamirabarani, Tamilnadu, India using gamma ray spectroscopic technique