radon/thoron
Measurement of indoor concentrations of radon and thoron in Mizoram, India
... Radon, thoron and their progenies as a natural radiation hazards to human health is well ...indoor radon/thoron concentra- tion is also influenced by building materials, ventilating system and ...
5
Study on Seasonal Variation of Indoor Radon, Thoron and their Progeny Levels in Belur and Channarayapatna Taluks of Hassan District, Karnataka State, India.
... indoor radon, thoron and their progeny concentrations were measured using solid state nuclear track detectors ...both radon and thoron gases into the cup and is called the filter ...
6
Study Of Indoor Radon, Thoron, And Annual Effective Doses Using Twin Chamber Dosimeter Cups In The Dwellings Of Mathura (U.P.), India.
... of radon and its descendants to know the effect of radioactivity in nearby homes due to refinery ...of radon and its descendants have been recognized quite a while back, thoron had frequently been ...
5
A Review Article on the Study of Radon and Thoron Concentration using Solid State Nuclear Track Detector
... of radon conducted in different parts of India has been ...indoor radon, but few studies covered exhalation rates of radon in building materials and ...and radon was within recommended limits. ...
5
Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor
... The results of the survey are expected to provide baseline data. Thus it will be useful in accessing public doses due to radiological accidents. Monitoring of radioactivity in air has been widely used as an early warning ...
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Radon and thoron survey in high background radiation area at Segamat, Johor
... Abstract. This paper aims to present the preliminary data of radon ( 222 Rn) and thoron ( 220 Rn) in some high background radiation areas (HBRA) at Segamat, Johor. DOSEman PRO (SARAD GmbH, Germany) with ...
7
New Precision Technique for Removing Radioactive Emanations From Matter, and for Measuring Minute Quantities of Radon and Thoron
... ionization from the decay products on the central electrode due to some of their alpha particles striking the upper and lower ends of the ionizaThe co~fficients of Duane and Laborde were[r] ...
94
Levels of natural radioactivity in environment in residential area of Moradabad District, Western Uttar Pradesh
... indoor radon/thoron ...of radon and thoron progeny as well as the resulting gases fall well below the internationally-recommended levels, which clearly indicates that the houses in Central ...
7
Measurements of 222Rn, 220Rn and Their Decay Products in the Environmental Air of the Errachidia Area (Morocco) Using SSNTDs
... In this work, the measurement method is based on using CR-39 and LR-115 type II solid state nuclear track detectors (SSNTDs) for measuring the concentration of radon, thoron and their progenies in the ...
6
Estimation of Annual Effective Dose of 222 Rn and 220 Rn in indoor Air of Rohilkhand region, Uttar Pradesh state, India
... indoor radon, thoron, and their progenies were carried out using the LR-115 type II plastic track detector loaded in twin-chamber plastic dosimeters (Eappen et ...to radon; the detector was placed in ...
8
Radon in Dwellings of Papua New Guinea: Observations of a Preliminary Study
... of Radon and Thoron Concentrations Single entry pin-hole twin cup dosimeters were used for the estimation of time averaged concentrations of radon and thoron in the indoor ...pinholes. ...
5
Detailed Study of Radon Spatial Anomaly in Tlamacas Mountain Area, Volcano Popocatepetl, Mexico
... soil radon survey accomplished by 2 different methods during 2 different periods in the area of Tlamacas Mountain are ...intensive radon emanation with a characteristic dimension of about 300 meters located ...
7
Environmental Monitoring of 222Rn Radiations in "Bare Mode" in Moradabad City of Western Uttar Pradesh, India
... pulls radon-rich air into the lower areas of the house through any dirt floor areas or unsealed sumps or fissures, pores or cracks, in the building ...the radon entry diffusion/convection mechanism ...
6
Accuracy Improvement Of A Pin Photodiode Radon Counter
... comprehensive radon measurement ...RAD7 radon monitor apparatus uses an air pump and a solid state alpha detector which consists of a semiconductor material that converts alpha radiation directly to an ...
5
Increasing the accuracy and temporal resolution of two-filter radon–222 measurements by correcting for the instrument response
... of radon daughters but the ini- tial rise-time is controlled by the external flow ...that thoron can be excluded from the detector, a higher exter- nal flow rate should be favoured when aiming for ...
19
Measurement of Radon Gas Concentrations in Tap Water Samples for Thi Qar Governorate Using Nuclear Track Detector (CR 39)
... series. Thoron gas ( 220 Rn), which is a radon isotope, is a decay product in the thorium ( 232 Th) ...of radon. Because of such a short half-life of thoron, its emanation from building ...
8
Study of radon exhalation rate and natural radioactivity in soil samples collected from 50m away from Kasimpur thermal power plant
... Gamma ray spectrometric measurements were carried out at Inter-University Accelerator Centre, New Delhi, India using a coaxial n-type HPGe detector (EG&G, ORTEC, Oak Ridge, USA) for estimation of the natural ...
7
Evaluation of Environmental Hazard in Underground Mines Using Adaptive Neuro- Fuzzy Model
... Table 1 shows that when 50% of data are taken in series order, The mean average error (MAE) is 0.03 WL for radon and the mean average percentage error (MAPE) is 2.83%. Also the MAE is 0.015 and the MAPE 1.44%. If ...
18
Radiological impact of phosphogypsum discharged into the Venice lagoon: 222Rn
... average radon exhalation from local uncontaminated soil, without radium anoma- lies, ( 226 Ra = 20-40 Bq kg − 1 ), [9], measured in different meteorological con- ditions, resulted in ...
12
Littlewood-Paley g-function and Radon Transform on the Heisenberg Group
... the Radon transform on H n and Siegel type Lie group in [6, 7, 8] by using the continuous wavelet ...of Radon transform and wavelet transform has proved to be very useful both in pure mathematics and ...
12