en Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background:</span></span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Prognostic models and specific data are the basics of radiation dosimetry.&nbsp; Inhalation is the major pathway of radiation exposure to man. Precise data of progeny concentration status is important for all dose assessments owing to Radon (</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²²</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Rn) and Thoron (</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²⁰</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Rn). </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Materials and Methods: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">The measurements of unbound (unattached) and bound (attached) short lived Radon and Thoron daughters were carried out in selected dwellings of coastal regions of Thiruvananthapuram district, Kerala. For the precise assessment of fraction of bound and unbound fraction of radon / thoron progeny, progeny sensors with wire mesh capped progeny sensors were used. The method makes use of radon thoron progeny discrimination using proper barriers and wire mesh helps to segregate bound against unbound fractions of progeny. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Results: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Overall (bound and unbound) equilibrium equivalent concentrations of </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²²</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Rn (EECRA+U) and similar quantity for </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²⁰</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Rn concentration (EECTA+U) were found to differ from 6.31&plusmn; 0.9 to 7.98 &plusmn; 1.1 Bqm</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">^-3</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US"> and 0.35 &plusmn; 1.1 to 0.61 &plusmn; 0.1 Bqm</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">^-3</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">, respectively. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Conclusions: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">The volume specific quantities of bound progeny nuclides for both Radon and Thoron were found superior than the unbound daughter nuclides in the residences of the study area. The unattached (unbound) equilibrium equivalent concentrations of </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²²</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Rn and </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²⁰</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Rn did not demonstrate any notable relationship with ventilation conditions. It was found that there is a positive relationship between the progeny attachment rate and aerosol concentration for radon.</span></span></span></span></span></span></span></span></span></div> Attached and unattached progeny, aerosol concentrations, attachment rate, deposition-based progeny sensors, wire-mesh capped sensors. 731 736 http://ijrr.com/browse.php?a_code=A-10-1-1391&slc_lang=en&sid=1 S. Monica 7900319475328460031897 7900319475328460031897 No Department of Physics, St. Joseph’s College for Women, Alappuzha, Kerala, India C. Bindhu 7900319475328460031898 7900319475328460031898 No Department of Physics, Fatima Mata National College (Autonomous), Kollam, India P.J. Jojo panakal.jojo@pnguot.ac.pg 7900319475328460031899 7900319475328460031899 Yes Department of Physics, Fatima Mata National College (Autonomous), Kollam, India