A5101730576- Radioactivity and Radon Measurements
- Radioactive contamination and transfer
- Nuclear and radioactivity studies
- Graphite, nuclear technology, radiation studies
- Radiation Dose and Imaging
- Geochemistry and Geologic Mapping
- Groundwater and Isotope Geochemistry
- Soil and Land Suitability Analysis
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Water resources management and optimization
- Water Quality and Pollution Assessment
- Radioactive element chemistry and processing
- Tree-ring climate responses
- Catalytic Cross-Coupling Reactions
- Nanomaterials for catalytic reactions
- Soil erosion and sediment transport
- Water Systems and Optimization
- Fecal contamination and water quality
- Geology and Paleoclimatology Research
- Heavy metals in environment
- Wastewater Treatment and Reuse
- Environmental Justice and Health Disparities
Mangalore University
2015-2025
Sahyadri Hospital
2017
University of Mysore
2008
Indoor and outdoor gamma dose rates were evaluated around a prospective uranium mining region – Gogi, South India through (i) direct measurements using GM based survey meter, (ii) integrated measurement days CaSO4:Dy thermo luminescent dosimeters (TLDs), (iii) analyses of 273 soil samples for 226Ra, 232Th, 40K activity concentration HPGe spectrometry. The geometric mean values indoor 104 nGy h−1 97 h−1, respectively with an to ratio 1.09. concentrations varied significantly within small area...
The limits recommended by World Health Organization (WHO) and the Atomic Energy Regulatory Board (AERB) of India for uranium concentration in drinking water are 30 μg/l 60 respectively.The present study on groundwater used purposes 73 villages Karnataka, India, shows that 57 is more than μg/l, including 48 where it exceeds μg/l.Thus 78% 66% studied, permissible given WHO AERB respectively.It alarming to note one village each Tumkur Chitradurga districts, five Kolar seven Chikkaballapura...
Abstract The paper describes a novel technique to harvest 222 Rn laden air from soil gas of natural origin as highly efficient source for calibration applications in walk-in type chamber. makes use probe about 1 m draw gas, through dehumidifier and delay volume, using an pump fill the concentration range few hundred Bq −3 tens kBq was easily attained chamber volume 22.7 3 within short pumping duration h. A new referred “semi-dynamic mode operation” which is injected into at regular intervals...
A walk-in type 222Rn calibration chamber of volume 22.7 m3, which has traceability to international standards, is established at the Centre for Advanced Research in Environmental Radioactivity, Mangalore University, India. It a human-machine interface communication system, programmable logic controller and sensor feedback circuit controlling data acquisition relative humidity (RH) temperature (T). An innovative method generation desired concentration (a few hundred Bq m-3 up about 36 kBq...
In this study, the result of systematic measurement activity concentration 222 Rn in drinking water from sources public supply along coastal regions Kerala is discussed. The concentrations were measured using emanometry method and it was found to vary 0.03 1.31Bq l −1 . associated effective doses computed for population region.
In an adjoining publication, we demonstrated the novel technique to harvest soil gas of natural origin as a highly efficient source 222Rn for calibration applications in large volume chamber. Its advantages over use conventional high strength 226Ra sources, such capability serve non-depleting reservoir and achieve desired concentration inside chamber within very short time, devoid radiation safety issues handling licensing requirements from regulatory authority, were discussed detail. It was...
Comparison is an important role in the quality control and assurance for any measuring system. Due to future legal regulations regarding radon levels air, maintaining system harmonization of results as well validation thoron systems important. The aim this work validate degrees equivalence measurement precisions existing five four located Asian countries (China, India, Japan Thailand) through comparison experiment. In project, experiment was performed order derive ratio between assigned...