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International Journal of Low Radiation最新文献

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Radiation and evolution: from Lotka-Volterra equation to balance equation 辐射与演化:从洛特卡-沃尔泰拉方程到平衡方程
International Journal of Low Radiation Pub Date : 2016-01-01 DOI: 10.1504/IJLR.2016.10002388
K. W. Fornalski
{"title":"Radiation and evolution: from Lotka-Volterra equation to balance equation","authors":"K. W. Fornalski","doi":"10.1504/IJLR.2016.10002388","DOIUrl":"https://doi.org/10.1504/IJLR.2016.10002388","url":null,"abstract":"The paper presents the concept of balance equation as a result of jostling process between detrimental and beneficial factors due to ionising radiation impact on the human population. The Lotka-Volterra equation was used to describe the evolution process of the population in low-dose radiation environment. The balance equation, which is a result of Lotka-Volterra's equation stabilisation over time, describes correctly most of the human population, wherein the probability of detrimental (cancerous) processes equals the probability of beneficial (hormetic) processes. It concludes that most of people respond via threshold dose-response curve, while radiosensitive people respond using linear model and radioresistant people respond using hormetic one.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"10 1","pages":"222"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66669573","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: 1
Assessment of early and late DNA damages in interventional radiologists exposed to protracted low dose and dose rate of X-radiation 介入放射科医师长期低剂量和低剂量率x射线照射的早期和晚期DNA损伤评估
International Journal of Low Radiation Pub Date : 2016-01-01 DOI: 10.1504/IJLR.2016.10002361
P. Venkatachalam, T.R. Muralidharan, S. Joseph, M. Bhavani, Venkateswarlu Raavi, Sakina Murtaza, Safa Abdul Syed Basheerudeen
{"title":"Assessment of early and late DNA damages in interventional radiologists exposed to protracted low dose and dose rate of X-radiation","authors":"P. Venkatachalam, T.R. Muralidharan, S. Joseph, M. Bhavani, Venkateswarlu Raavi, Sakina Murtaza, Safa Abdul Syed Basheerudeen","doi":"10.1504/IJLR.2016.10002361","DOIUrl":"https://doi.org/10.1504/IJLR.2016.10002361","url":null,"abstract":"Occupational radiation exposures for interventionalists are considered as the highest received doses among medical practitioners and contributing a risk of DNA damage. A significantly higher γ-H2AX foci and unstable chromosomal aberrations (p > 0.001) was observed in Peripheral Blood Lymphocytes (PBL) of medical professionals when compared to healthy volunteers, whereas translocations did not show any difference. The results suggest that low-dose protracted radiation exposure can induce DNA damages in PBL and can get repaired or misrepaired and develop into chromosomal aberrations.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"10 1","pages":"198"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66669553","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: 4
Natural radioactivity and hazardous index of major South Indian river sediments 南印度主要河流沉积物的天然放射性和危险指数
International Journal of Low Radiation Pub Date : 2015-09-19 DOI: 10.1504/ijlr.2015.071761
S. Murugesan, S. Mullainathan, V. Ramasamy
{"title":"Natural radioactivity and hazardous index of major South Indian river sediments","authors":"S. Murugesan, S. Mullainathan, V. Ramasamy","doi":"10.1504/ijlr.2015.071761","DOIUrl":"https://doi.org/10.1504/ijlr.2015.071761","url":null,"abstract":"The activity concentrations of 238U, 232Th and 40K have been determined by gamma ray spectrometry with an NaI(Tl) detector in sediments of Palar River, Tamil Nadu, India. The absorbed dose rate, radium equivalent concentration, external (Hex) and internal (Hin) hazardous indices are calculated from criteria formula and compared with the international recommended limits. The Radioactive Heat Production (RHP) rate and Excess Lifetime Cancer Risk (ELCR) are also calculated. The observed dose rate from ERDM (Environmental Radiation Dosimeter) at 1 m above the ground level at each site of the river is measured and correlated with calculated absorbed dose rate. The distribution of quartz, feldspar, magnetic susceptibility and weight of the magnetic minerals is correlated with radioactivity results. From the observations, the weight of the magnetic minerals is an index to identify the sediments of low or high radiological risk.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijlr.2015.071761","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66669288","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: 2
Importance of radon studies in rural areas and correlation of indoor radon level with radon inventory 农村地区氡研究的重要性及室内氡水平与氡调查的相关性
International Journal of Low Radiation Pub Date : 2015-09-19 DOI: 10.1504/ijlr.2015.071764
K. S. Banerjee, D. Sengupta
{"title":"Importance of radon studies in rural areas and correlation of indoor radon level with radon inventory","authors":"K. S. Banerjee, D. Sengupta","doi":"10.1504/ijlr.2015.071764","DOIUrl":"https://doi.org/10.1504/ijlr.2015.071764","url":null,"abstract":"The measurement of indoor radon in villages is very important as 50% of the world populations live in villages, and rural houses normally have very low air exchange rates. This study has estimated the possible indoor radon level from five types of rocks, which are readily available to build houses in Eastern Singhbhum district of India. In the process to calculate this radon inventory, radium content and radon flux rate were measured in the selected rocks. Then calculated radon emanation factor was compared with the possible indoor radon concentration computed from the available air ventilation rate of typical Indian houses. It was found that granite generated low radon level and it can be a good alternative choice as building material instead of other regionally used rocks. This study also suggests that important geological parameters, which develop and increase porosity, can effectively increase radon inventory.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijlr.2015.071764","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66669323","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
Evaluation and analysis of 226Ra, 232Th and 40K and radon exhalation rate in the soil samples for health risk assessment 土壤样品中226Ra、232Th、40K及氡呼出率的评价分析及健康风险评价
International Journal of Low Radiation Pub Date : 2015-09-19 DOI: 10.1504/ijlr.2015.071747
S. Kansal, Rohit Mehra
{"title":"Evaluation and analysis of 226Ra, 232Th and 40K and radon exhalation rate in the soil samples for health risk assessment","authors":"S. Kansal, Rohit Mehra","doi":"10.1504/ijlr.2015.071747","DOIUrl":"https://doi.org/10.1504/ijlr.2015.071747","url":null,"abstract":"The measurements of radium, thorium and potassium using gamma spectrometry and radon exhalation rates using solid-state nuclear track detectors (LR-115, Type-II plastic) are carried out in the soil samples collected from some parts of western districts of Haryana, India. The activity concentrations of 226Ra, 232Th and 40K range from 13.93 to 142 Bq kg−1, 35.95 to 91.78 Bq kg−1 and 299.57 to 1056.77 Bq kg−1, respectively. The values of total absorbed dose and annual effective dose (indoors and outdoors) were found to vary from 42.12 to 140.05 nGy h−1, 0.22 to 0.69 mSv y−1 and 0.05 to 0.17 mSv y−1 respectively. The radium equivalent activity (Raeq) in all the soil samples varies from 92.51 to 287.08 Bq kg−1 with an average of 184.15 Bq kg−1. The radium values are lower than the recommended safe limit of 370 Bq kg−1 hence there is no radiological risk to the residents of the studied area.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijlr.2015.071747","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66669276","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: 6
A thorough investigation of the uranium concentration in phosphate mines: a case study of Minjingu phosphate mine, Arusha, United Republic of Tanzania 彻底调查磷矿中的铀浓度:对坦桑尼亚联合共和国阿鲁沙Minjingu磷矿的个案研究
International Journal of Low Radiation Pub Date : 2015-09-19 DOI: 10.1504/IJLR.2015.071766
L. Meza, M. Mandour, M. Shalaby, M. H. Hassan, N. Mohamed
{"title":"A thorough investigation of the uranium concentration in phosphate mines: a case study of Minjingu phosphate mine, Arusha, United Republic of Tanzania","authors":"L. Meza, M. Mandour, M. Shalaby, M. H. Hassan, N. Mohamed","doi":"10.1504/IJLR.2015.071766","DOIUrl":"https://doi.org/10.1504/IJLR.2015.071766","url":null,"abstract":"Using high resolution gamma ray spectrometry, the terrestrial radionuclides from all phosphate rock samples were measured and results are presented. From the measured gamma ray spectra, activity concentrations were determined for 226Ra/238U (range from 122.5±6.9 to 8060±806 Bq kg−1), 232Th (range from 13.2±0.8 to 1201.3±77.3 Bq kg−1), 40K (range from 12.9±1.3 to 1827.6±93.9 Bq kg−1) and 137Cs (range from 0.5±0.017 to 70.58±1.25 Bq kg−1) with mean of 1832.32±00, 447.62±00, 399.46±00 and 22.98±0.43 Bq kg−1 respectively. Radium equivalent activity ranges from 219.27±00 to 9127.07±00 Bq kg−1 with mean of 2433.56±00 Bq kg−1. The total absorbed dose estimated at 1 metre above the ground varies from 102.1 to 3967.8 nGyh−1 with an average of 1055.9 nGy h−1. Investigation of uranium recorded a peak of 650±65ppm, this suggests the existing U concentration is over three times greater than economically viable and production of a cleaner fertiliser is favourable.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJLR.2015.071766","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66669331","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: 2
210Pb in marine salt consumed by the inhabitants of Recife, Brazil 巴西累西腓居民食用的海盐中的铅
International Journal of Low Radiation Pub Date : 2014-07-15 DOI: 10.1504/IJLR.2014.063410
C. Silva, C. C. Júnior
{"title":"210Pb in marine salt consumed by the inhabitants of Recife, Brazil","authors":"C. Silva, C. C. Júnior","doi":"10.1504/IJLR.2014.063410","DOIUrl":"https://doi.org/10.1504/IJLR.2014.063410","url":null,"abstract":"210Pb is widely distributed in the marine environment. The aim of this research, therefore, was to determine 210Pb concentrations in marine salt consumed by the population of Recife and calculate the ingestion dose of 210Pb due to marine salt consumption. The ion exchange resin method was used. The concentration of 210Pb varied from 4 to 365 Bq kg–1 in fresh weight. The estimated ingestion dose of 210Pb due to consumption of marine salt in the population of Recife was 1.2 Sv, at least three orders of magnitude above the maximum recommended level.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"9 1","pages":"266"},"PeriodicalIF":0.0,"publicationDate":"2014-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJLR.2014.063410","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66668794","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
Low-dose ionising radiation effects: effects of thoron inhalation 低剂量电离辐射效应:吸入钍的效应
International Journal of Low Radiation Pub Date : 2014-07-15 DOI: 10.1504/IJLR.2014.063409
A. Menon, R. Indu, Tiju Chacko, C. Nair
{"title":"Low-dose ionising radiation effects: effects of thoron inhalation","authors":"A. Menon, R. Indu, Tiju Chacko, C. Nair","doi":"10.1504/IJLR.2014.063409","DOIUrl":"https://doi.org/10.1504/IJLR.2014.063409","url":null,"abstract":"Cellular DNA damage, tissue antioxidant levels, serum parameters, blood count and histopathological alterations were examined in tissues of mice exposed to thoron (average radiation dose0.065 μSv/hr). Alkaline cometassay results indicated that inhalation of thoron caused significant increase in the damage to DNA of lung tissue, while there was no significant damage to DNA in bone marrow cells. A small increase in cellular DNA damage was also seen in blood leukocytesfollowing thoron exposure. Inhalation of thoron induced severe damage in the lung cells leading to their elimination by apoptosis. Histology of lungs showed areas of abnormalities. An increase in the level of inflammatory response mediator, NF-κB, was also observed in the lung tissue of exposed mice. The DNA damage in lung cells could be induced by high energy radiation emanating from radioactive decay of thoron and its progeny particularly the alpha radiation of 8.88 MeV from 212Po.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"9 1","pages":"252"},"PeriodicalIF":0.0,"publicationDate":"2014-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJLR.2014.063409","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66668759","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: 4
Health monitoring of NPP workers 核电站工人的健康监测
International Journal of Low Radiation Pub Date : 2014-07-15 DOI: 10.1504/IJLR.2014.063411
J. Djounova, N. Chobanova, I. Guleva, A. Milchev, Iler Peyankov, K. Negoicheva, D. Panova
{"title":"Health monitoring of NPP workers","authors":"J. Djounova, N. Chobanova, I. Guleva, A. Milchev, Iler Peyankov, K. Negoicheva, D. Panova","doi":"10.1504/IJLR.2014.063411","DOIUrl":"https://doi.org/10.1504/IJLR.2014.063411","url":null,"abstract":"The aim of the study is to assess the health status of Kozloduy Nuclear Power Plant personnel in association with their occupational exposure to low doses of ionising radiation (IR) as well as with other factors of their working environment and to determine the probability of the occupational exposure to be a reason for the diagnosed malignant diseases (Probability of Causation – PC). More than 1000 occupationally exposed workers and nonexposed administrative staff have been studied during 1993–2008. No statistically significant variation in the average cumulative dose was found between the healthy people and the persons with at least one disorder. The highest rate of morbidity was registered in persons with doses up to 1 mSv. The analysis of parameters of peripheral blood showed that at occupational lowdose exposure the haemopoietic system completely preserves the tri-linear cell proliferation capacity of the bone marrow. The analysis of results of PC demonstrated that this is spontaneously arising malignant diseases, regardless of condition of work.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"9 1","pages":"274"},"PeriodicalIF":0.0,"publicationDate":"2014-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJLR.2014.063411","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66668804","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
A view on the effects induced by low irradiation contamination of soil and atmospheric impact on plant populations in nature 低辐射污染土壤和大气对自然界植物种群的影响
International Journal of Low Radiation Pub Date : 2014-07-15 DOI: 10.1504/IJLR.2014.063412
V. Korogodina
{"title":"A view on the effects induced by low irradiation contamination of soil and atmospheric impact on plant populations in nature","authors":"V. Korogodina","doi":"10.1504/IJLR.2014.063412","DOIUrl":"https://doi.org/10.1504/IJLR.2014.063412","url":null,"abstract":"At present, a possible radiation effect is estimated as a function of dose irradiation although it is strongly dependent more on the environmental factors. The consequences of low doses of internal irradiation linked to chronic soil contamination and of external irradiation associated with short or prolonged atmospheric impacts for plant populations in nature are analysed in this paper. The results revealed that the internal and external lab short and prolonged irradiations showed the same effects. In nature, soil contamination (~30 Bq/kg) limited survival of seeds to ~50% and increased their resistance to heat stress, whereas atmospheric impact (~0.12 μSv/h) combined with high summer temperature decreased viability to 20–30%. External atmospheric irradiations compared with background originate sporadically synergic radiation-heat effect which can be lethal for populations from time to time, whereas low-chronic internal soil contamination decreases seed survival significantly but increases resistance caus...","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":"9 1","pages":"289"},"PeriodicalIF":0.0,"publicationDate":"2014-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJLR.2014.063412","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66668844","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
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