Indoor radon activities were measured during a period of 6 months, as well as several physical environmental variables (temperature, pressure, humidity and rainfall). The location was a small room at an administrative building of the University of Coimbra, usually undisturbed by human activities and situated over bedrock of low-uranium Triassic red sandstones. A low average activity of radon wa...

Abstract. The cost of remedial work and the radon level reduction achieved in a series of domestic properties in Northamptonshire have been the subject of study by our group for some years, as Northamptonshire was declared as a Radon Affected Area in 1992. Previous analysis, which relied on estimations of the total number of affected houses extrapolated from National Radiological Protection Boa...

OBJECTIVE To investigate the effect of reducing home ventilation as part of household energy efficiency measures on deaths from radon related lung cancer. DESIGN Modelling study. SETTING England. INTERVENTION Home energy efficiency interventions, motivated in part by targets for reducing greenhouse gases, which entail reduction in uncontrolled ventilation in keeping with good practice gui...

Exposure to radon over time has significant detrimental effects on human health. Approximately 226,000 annual radon-related deaths have been reported from 66 countries (1). Many a action plan, in order reduce the harmful of exposure general public. Maps are routinely used assist with mitigation strategies and delineate areas priority regulation. Standard regulations European Union include requi...

Continuous Air Monitors (CAMs) are used in nuclear facilities to detect airborne alpha-emitting transuranic radionuclides in work areas, stacks and ducts. We have now tested the first commercial version of the original Los Alamos/Texas A&M design for its performance. The penetration of inhalable-size particles onto the CAM filter is better than 80%, with excellent uniformity of sample. With the...

New General Ray (GR) method for solution of the Dirichlet boundary value problem for the class of elliptic Partial Differential Equations (PDE) is proposed. GRmethod consists in application of the Radon transform directly to the PDE and in reduction PDE to assemblage of Ordinary Differential Equations (ODE). The class of the PDE includes the Laplace, Poisson and Helmgoltz equations. GRmethod pr...

Background: In this study are submitted the radon concentration measurement results of four underground mines: Stanterg, Artana, Hajvali and Badovc, which are owned by Trepça Enterprise, Kosovo. The mines have the same geological formation and from these mines are extracted ores rich with lead, zinc, silver, and gold. The radiation exposures caused by radon and radon daughters was determ...

background: radon and thoron are invisible, odorless, heavy and radioactive gases which are ubiquitously present in dwellings and in the environment. in the present work, seasonal variation of indoor radon, thoron and their progeny concentrations has been studied in the dwellings of industrially polluted cities in district faridabad, haryana and district mathura in uttar pradesh. materials and ...