Search Results - "Kumara, K. Sudeep"

Environmental transfer parameters of strontium for soil to cow milk pathway for tropical monsoonal climatic region of the Indian subcontinent by Ujwal, P., Yashodhara, I., Sudeep Kumara, K., Ravi, P. M., Karunakara, N.

“…The radionuclide transfer between compartments is commonly described by transfer parameters representing the ratio of concentrations of an element in two…”
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A WALK-IN TYPE CALIBRATION CHAMBER FACILITY FOR 222Rn MEASURING DEVICES AND INTER-COMPARISON EXERCISES by Trilochana, S, Somashekarappa, H M, Kumara, K Sudeep, Mohan, M P, Nayak, S Rashmi, D'Souza, Renita Shiny, Kamath, Srinivas S, Sahoo, B K, Gaware, J J, Sapra, B K, Janik, M, Al-Azmi, Darwish, Mayya, Y S, Karunakara, N

“…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…”
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Evaluation of radon adsorption characteristics of a coconut shell-based activated charcoal system for radon and thoron removal applications by Karunakara, N., Sudeep Kumara, K., Yashodhara, I., Sahoo, B.K., Gaware, J.J., Sapra, B.K., Mayya, Y.S.

“…Radon (222Rn), thoron (220Rn), and their decay products contribute a major fraction (more than 50%) of doses received from ionisation radiation in public…”
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Assessment of ambient gamma dose rate around a prospective uranium mining area of South India – A comparative study of dose by direct methods and soil radioactivity measurements by Karunakara, N., Yashodhara, I., Sudeep Kumara, K., Tripathi, R.M., Menon, S.N., Kadam, S., Chougaonkar, M.P.

“…•Gamma dose rate was measured around a region indentified as prospective uranium mining area.•Dose was evaluated by GM based survey meter, TLDs, and analyses…”
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Thoron Mitigation System based on charcoal bed for applications in thorium fuel cycle facilities (part 2): Development, characterization, and performance evaluation by Sudeep Kumara, K., Sahoo, B.K., Gaware, J.J., Sapra, B.K., Mayya, Y.S., Karunakara, N.

“…Exposure due to thoron (220Rn) gas and its decay products in a thorium fuel cycle facility handling thorium or 232U/233U mixture compounds is an important…”
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Thoron Mitigation System based on charcoal bed for applications in thorium fuel cycle facilities (part 1): Development of theoretical models for design considerations by Sahoo, B.K., Sudeep Kumara, K., Karunakara, N., Gaware, J.J., Sapra, B.K., Mayya, Y.S.

“…Regulating the environmental discharge of 220Rn (historically known as thoron) and its decay products from thorium processing facilities is important for…”
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Estimation of air-to-grass mass interception factors for iodine by Karunakara, N., Ujwal, P., Yashodhara, I., Sudeep Kumara, K., Mohan, M.P., Bhaskar Shenoy, K., Geetha, P.V., Dileep, B.N., James, Joshi P., Ravi, P.M.

“…Air-to-grass mass interception factors for radionuclide are important basic input parameter for the estimation of radiation dose to the public around a nuclear…”
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Studies on soil to grass transfer factor (Fv) and grass to milk transfer coefficient (Fm) for cesium in Kaiga region by Karunakara, N., Ujwal, P., Yashodhara, I., Rao, Chetan, Sudeep Kumara, K., Dileep, B.N., Ravi, P.M.

“…Detailed studies were carried out to establish site-specific soil to grass transfer factors (Fv) and grass to cow milk transfer coefficients (Fm) for…”
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Mass exhalation rates, emanation coefficients and enrichment pattern of radon, thoron in various grain size fractions of monazite rich beach placers by Pinto, Primal V., Sudeep Kumara, K., Karunakara, N.

“…A study on exhalation rates of 222Rn and 220Rn and their enrichment pattern in different grain size fractions was carried out. Four different size fractions of…”
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Development of a “222Rn incremented method” for the rapid determination of air exchange rate using soil gas by Kumara, K. Sudeep, Karunakara, N., Mayya, Y.S.

“…The air exchange rate (AER) is a critical parameter that governs the levels of exposure to indoor pollutants impacting occupants’ health. It has been…”
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Thorium promotes lung, liver and kidney damage in BALB/c mouse via alterations in antioxidant systems by Chaudhury, Debajit, Sen, Utsav, Sahoo, Bijay Kumar, Bhat, Nagesh N., Kumara K, Sudeep, Karunakara, N., Biswas, Siddhartha, Shenoy P, Sudheer, Bose, Bipasha

“…Thorium (232Th), long lived (14.05 billion years) most stable thorium isotope, is thrice naturally abundant than uranium. 232Th occurs as rocky deposits and…”
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A multi-proxy lacustrine sedimentary record of sub-decadal to decadal scale variability of monsoon during the late Holocene in southern India by Aravind, G.H., Rafaz, A.K., Sandeep, K., Badesab, F., Warrier, Anish K., Sijinkumar, A.V., Sharma, Rajveer, Mahesh, B.S., Karunakara, N., Sudeep Kumara, K., Srinivas, Reji, Venkateshwarlu, M., Prakash, R.J.

“…•Strong linkage between rock magnetic parameters and the instrumental rainfall data.•The cyclic variation of rainfall during the past 2100 years.•The strong…”
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How Long a Tropical Mountainous Lake Can Survive? Inferences from Geochemistry and Radiometric Measurements of Pookode Lake, Kerala, India by Gopinath, Girish, Resmi, T. R., Karunakara, N., Manjula, P., Jesiya, N. P., Sudeep Kumara, K., Srinivas, Reji

“…Pookode, the freshwater lake in the Western Ghats, is a well-known tourist place in southern India, and human interference has turned the otherwise serene…”
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An innovative technique of harvesting soil gas as a highly efficient source of 222Rn for calibration applications in a walk-in type chamber: part-1 by Karunakara, N., Shetty, Trilochana, Sahoo, B. K., Kumara, K. Sudeep, Sapra, B. K., Mayya, Y. S.

“…The paper describes a novel technique to harvest 222 Rn laden air from soil gas of natural origin as a highly efficient source of 222 Rn for calibration…”
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A periodic pumping technique of soil gas for 222Rn stabilization in large calibration chambers: part 2—theoretical formulation and experimental validation by Shetty, Trilochana, Mayya, Y. S., Kumara, K. Sudeep, Sahoo, B. K., Sapra, B. K., Karunakara, N.

“…In an adjoining publication, we demonstrated the novel technique to harvest soil gas of natural origin as a highly efficient source of 222 Rn for calibration…”
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Organically bound tritium: optimization of measurements in environmental matrices by combustion method and liquid scintillation spectrometry by Nayak, S. Rashmi, D’Souza, Renita Shiny, Kamath, S. Srinivas, Mohan, M. P., Bharath, S., Shetty, Trilochana, Kumara, K. Sudeep, Narayana, B., Dileep, B. N., Ravi, P. M., Karunakara, N.

“…Optimization of a method, based on thermal oxidation using a tube furnace system (Pyrolyser), for the separation of organically bound tritium (OBT) from…”
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CFD-based simulation and experimental verification of 222Rn distribution in a walk-in type calibration chamber by Trilochana, S., Somashekarappa, H. M., Sudeep Kumara, K., Mayya, Y. S., Karunakara, N.

“…A walk-in type 222 Rn calibration chamber (~ 22 m 3 ) is established at the Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore…”
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A study of temporal variations of 7Be and 210Pb concentrations and their correlations with rainfall and other parameters in the South West Coast of India by Mohan, M.P., D'Souza, Renita Shiny, Rashmi Nayak, S., Kamath, Srinivas S., Shetty, Trilochana, Sudeep Kumara, K., Yashodhara, I., Mayya, Y.S., Karunakara, N.

“…As a part of establishing a regional database on natural radioactivity, the atmospheric concentrations of 210Pb and 7Be were measured over a three and half…”
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Development of a " 222 Rn incremented method" for the rapid determination of air exchange rate using soil gas by Kumara, K Sudeep, Karunakara, N, Mayya, Y S

“…The air exchange rate (AER) is a critical parameter that governs the levels of exposure to indoor pollutants impacting occupants' health. It has been…”
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Influence of rainfall on atmospheric deposition fluxes of 7Be and 210Pb in Mangaluru (Mangalore) at the Southwest Coast of India by Mohan, M.P., D'Souza, Renita Shiny, Nayak, S. Rashmi, Kamath, Srinivas S., Shetty, Trilochana, Kumara, K. Sudeep, Mayya, Y.S., Karunakara, N.

“…The depositional fluxes of 7Be and 210Pb were measured at Mangalore (12.82° N, 74.92° E) on the South West Coast region, which is one of the highest rainfall…”
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