Radiation Protection and Environment最新文献_第4页

Regional survey of indoor gamma-radiation and estimation of radiation exposure indexes in and around Vellore district, Tamil Nadu 泰米尔纳德邦Vellore区及其周边地区室内伽马辐射区域调查和辐射暴露指数估算

Radiation Protection and Environment Pub Date : 2022-04-01 DOI: 10.4103/rpe.rpe_19_22

MohanDas Dinakaran, Abel Deva Krupa, R. Suriyan

{"title":"Regional survey of indoor gamma-radiation and estimation of radiation exposure indexes in and around Vellore district, Tamil Nadu","authors":"MohanDas Dinakaran, Abel Deva Krupa, R. Suriyan","doi":"10.4103/rpe.rpe_19_22","DOIUrl":"https://doi.org/10.4103/rpe.rpe_19_22","url":null,"abstract":"The ambient gamma (γ)-radiation levels were measured in various types of dwellings in and around Vellore district. The survey was performed by using a portable Micro-R Survey Meter NUCLEONIX in different types of dwellings. The background γ-radiation exposure inside the dwelling was obtained in a total of 632 dwellings located in 30 different geographical positions in Vellore and nearby places. From the measured dose values, the radiation exposure indexes were estimated such as absorbed dose rate (ADR) and annual effective dose (AED) for the population. The present study has taken an initiative to formulate the environmental γ-radiation reference level for indoor γ-radiation level in and around Vellore district, Tamil Nadu. The calculated highest mean AED was found in concrete dwellings at 0.58 ± 0.07 mSvy−1. The highest ADR was found to be 1219 μGy/yr in tiled house. Furthermore, the work was extended to find the correlation between the temperatures, time, and type of house with radiation for a day with 2 h of regular time interval in these four types of houses and analyzed with response surface methodology.","PeriodicalId":32488,"journal":{"name":"Radiation Protection and Environment","volume":"45 1","pages":"81 - 87"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45955396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiological assessment of natural radioactivity in building materials: The common approach 建筑材料中天然放射性的放射评估：常用方法

Radiation Protection and Environment Pub Date : 2022-04-01 DOI: 10.4103/rpe.rpe_39_22

D. Rao

引用次数: 0

Dilution factor and atmospheric dispersion pattern for Kalpakkam site Kalpakkam场地的稀释因子和大气扩散模式

Radiation Protection and Environment Pub Date : 2022-04-01 DOI: 10.4103/rpe.rpe_27_22

T. Jesan, C. Manonmani, S. Ramkumar, I. Saradhi, A. Kumar

{"title":"Dilution factor and atmospheric dispersion pattern for Kalpakkam site","authors":"T. Jesan, C. Manonmani, S. Ramkumar, I. Saradhi, A. Kumar","doi":"10.4103/rpe.rpe_27_22","DOIUrl":"https://doi.org/10.4103/rpe.rpe_27_22","url":null,"abstract":"Assessment of radiological impact and for planning and preparedness programs, monthly atmospheric dispersion patterns at Kalpakkam have been studied using observed surface meteorological data during 2015–2020. The influence of meteorological factors such as wind speed, wind directions, percent of calm, atmospheric stability, and rainfall on dispersion patterns has been evaluated. The higher wind speed range (>4 m/s) is observed from 11:00 h to 19:00 h with an average wind speed of 4.17 m/s and the highest value observed in the month of May. Extremely stable F category and percent of calm observed to be lowest in the month of June. This study reveals that the high concentration area is toward seaside sectors during the southwest monsoon season from June to September and the remaining months, January to May and October to December, the most probable dispersion toward southwest, South, and North covering land sectors. Wet deposition due to maximum rainfall and more rainy days in the month of November during the northeast monsoon. The study provides site-specific information on dispersion patterns, an essential tool and crucial support for risk management with respect to radiological impact, monitoring and assessment in normal and emergency scenarios of a nuclear facility, and guiding resources for siting and design of the new facility in and around Kalpakkam.","PeriodicalId":32488,"journal":{"name":"Radiation Protection and Environment","volume":"45 1","pages":"65 - 70"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47950438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of evapotranspiration from measured meteorological parameters 根据实测气象参数估算蒸散量

Radiation Protection and Environment Pub Date : 2022-04-01 DOI: 10.4103/rpe.rpe_13_22

R. Shrivastava, Faby Sunny, Manish Chopra, I. Iyer, R. Oza

{"title":"Estimation of evapotranspiration from measured meteorological parameters","authors":"R. Shrivastava, Faby Sunny, Manish Chopra, I. Iyer, R. Oza","doi":"10.4103/rpe.rpe_13_22","DOIUrl":"https://doi.org/10.4103/rpe.rpe_13_22","url":null,"abstract":"Five empirical equations, namely, FAO-56 Penman–Monteith, Hargreaves–Samani, Makkink, Turc, and Priestley–Taylor are utilized in the estimation of evapotranspiration for the month of May in 2018 for Trombay site in Maharashtra. Evapotranspiration from a given surface is a function of incoming solar radiation, net radiation, ground heat flux, air temperature, relative humidity, and wind speed. Daily average measurements of these parameters are utilized in the empirical equations for the estimation of evapotranspiration. These estimated values are compared with the measured data from pan evaporimeter installed at Trombay. The measured data from the pan evaporimeter are corrected using the pan coefficient Kp which in turn is also estimated using empirical equations. The average value of the pan coefficient Kp is 0.8 for the site. The average measured value of evapotranspiration is 4.7 mm/d for May 2018, whereas the values estimated using the five empirical equations range from 3.3 mm/d to 12.7 mm/d. Among the five equations, the Turc equation was found to be in the best agreement with the measured values of evapotranspiration. Such studies are useful in the estimation of groundwater recharge, latent heat flux, and agriculture meteorology.","PeriodicalId":32488,"journal":{"name":"Radiation Protection and Environment","volume":"45 1","pages":"94 - 98"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48360173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Natural radioactivity content in various building materials of Chennai, Tamil Nadu, India 印度泰米尔纳德邦金奈各种建筑材料的天然放射性含量

Radiation Protection and Environment Pub Date : 2022-04-01 DOI: 10.4103/rpe.rpe_14_22

K. Lakshmi, V. Meenakshisundaram, J. Punniyakotti

引用次数: 0

Studies on transfer coefficient from grass to milk for 137Cs and 40K at Kakrapar Gujarat site, India 印度Kakrapar Gujarat地区137Cs和40K牧草向牛奶转移系数的研究

Radiation Protection and Environment Pub Date : 2022-04-01 DOI: 10.4103/rpe.rpe_25_22

S. Wagh, A. Patra, T. Jaison, I. Saradhi, A. Kumar

引用次数: 0

Heavy metal contamination in water sources of Thaliparamba municipality, Kerala, India 印度喀拉拉邦Thaliparamba市水源中的重金属污染

Radiation Protection and Environment Pub Date : 2022-01-01 DOI: 10.4103/rpe.rpe_25_21

T. Nafeesa Baby, V. Vineethkumar, K. Shimod, C. Vishnu, Sarayu Jayadevan

引用次数: 1

Radiological assessment of petroleum products in Aniocha South Local Government Area of Delta State, South-South Nigeria 尼日利亚南南三角洲州阿尼奥查南部地方政府地区石油产品的放射性评估

Radiation Protection and Environment Pub Date : 2022-01-01 DOI: 10.4103/rpe.rpe_5_22

B. Ijabor, A. Omojola, F. Omojola, Favour Chukwueke, Praise Azuka, Prudent Agama, Francisca Okafor

{"title":"Radiological assessment of petroleum products in Aniocha South Local Government Area of Delta State, South-South Nigeria","authors":"B. Ijabor, A. Omojola, F. Omojola, Favour Chukwueke, Praise Azuka, Prudent Agama, Francisca Okafor","doi":"10.4103/rpe.rpe_5_22","DOIUrl":"https://doi.org/10.4103/rpe.rpe_5_22","url":null,"abstract":"Monitoring the background levels from petroleum products is essential because of the everyday use and the increasing number of fuel, diesel, kerosene, and gas stations in Delta State, Nigeria. The study aims to determine the background ionizing radiation (BIR) in milli-Roentgen per hour (mR/h), absorbed dose rate (ADR) (nGy/h), and annual effective dose rate (AED) (mSv/year) in selected fuel, diesel, kerosene, and cooking gas-dispensing stations in Aniocha South Local Government Area of Delta State. The study was carried out using a calibrated Geiger Muller detector (Radiation Alert Inspector) in count per minute mode for point measurements and a geographical positioning system for determining the longitude and latitude of each point where measurements were taken from. The mean outdoor BIR, ADR, and AED were 0.011 ± 0.002 mR/h, 91.6 ± 19.5 nGy/h, and 0.11 ± 0.02 mSv/year, respectively, with 84% of the BIR below the world average. The mean BIR was below the world average while the ADR and AED were above it. Kerosene stations had the highest BIR. The outdoor measurements from this study were comparable to similar articles with slight variation. The study shows that the attendant and customers were safe in the areas where this study was conducted.","PeriodicalId":32488,"journal":{"name":"Radiation Protection and Environment","volume":"45 1","pages":"33 - 40"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43273277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of Fano factor for oversquare HPGe detector 过平方HPGe探测器Fano因子的估计

Radiation Protection and Environment Pub Date : 2022-01-01 DOI: 10.4103/rpe.rpe_1_22

M. Manohari, V. Sugumar, R. Mathiyarasu, B. Venkatraman

引用次数: 0

A study on the optimization of processing parameters of boron-doped CR-39 solid-state nuclear track detectors for response to thermal neutrons 掺硼CR-39固体核径迹探测器热中子响应工艺参数优化研究

Radiation Protection and Environment Pub Date : 2022-01-01 DOI: 10.4103/rpe.rpe_28_21

Deepa Sathian, R. Pal, A. Bakshi, B. Sapra

引用次数: 0