Radiation protection dosimetry最新文献_第9页

Synthesis and characterisation of calcium-iron-aluminium nanocomposites for electromagnetic radiation shielding application. 用于电磁辐射屏蔽的钙铁铝纳米复合材料的合成与表征。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-07-17 DOI: 10.1093/rpd/ncad292

Umashankara Raja Ramachandrappa, Vidya Yakekadakalu Shivanna, Manjunatha Holaly Chandrashekara Shastry, Seenappa Lakshmaiah, Sridhar Krishnachari Nagarthnamma, Munirathnam Rajachari, Rajashekara Koppa Mahadevappa, Manjunath Shivanna

引用次数: 0

Technologies for retrospective radiation dosimetry. 追溯辐射剂量测定技术。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-07-17 DOI: 10.1093/rpd/ncad319

Pradeep Narayan

{"title":"Technologies for retrospective radiation dosimetry.","authors":"Pradeep Narayan","doi":"10.1093/rpd/ncad319","DOIUrl":"https://doi.org/10.1093/rpd/ncad319","url":null,"abstract":"Radiation dosimetry is an important task for assessing the biological damages created in human being due to ionising radiation exposure. Ionising radiation being invisible and beyond the perception of human natural sensors, the dosimetry equipments/systems are the utmost requirement for its measurement. Retrospective measurement of radiation doses is a challenging task as conventional radiation dosemeters are not available at the exposure site. The material/s in close proximity of exposed individual or individuals' biological samples may be used as retrospective radiation sensor for dosimetry purpose. Environment materials such as sand, bricks, ceramics, sand stones, quartz, feldspar, glasses and electronic chips have been utilised using TL (Thermoluminescence) techniques for retrospective gamma dose (min 10 cGy) measurement. Electron Spin Resonance techniques have been employed to human biological samples such as tooth enamel, bones, nails, hair, etc. and reported for dosimetry for ~20 cGy min dose measurement. Some commercial glasses have been found sensitive enough to measure the minimum gamma doses of the order of 100 cGy using TL techniques. For internal retrospective dosimetry, the radioactivity contamination assessment in food items, water, other edible product and ambient air are the prerequisites. The radioactivity concentration vis-à-vis their consumption rate may help in controlling the internal contamination and estimation of dose absorption in human body. Defence Laboratory, Jodhpur has been working extensively on the dosimetry techniques for external dose measurement using environmental material and developed portable contamination monitoring systems for food and water radioactivity measurement in the range of 50 Bq kg-1 to 1000 kBq kg-1 in 60 s measurement time. The recent research and development in the methodologies, equipments and systems undertaken towards capacity building and self-reliance in retrospective radiation dosimetry is reported in this paper.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141627507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The thermoluminescence glow curves of LiF:Mg,Ti: characteristics and mechanisms. LiF:Mg,Ti的热致发光辉光曲线：特性和机制。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-06-22 DOI: 10.1093/rpd/ncae140

Yigal Shalom Horowitz, Leonid Oster

引用次数: 0

Evaluation of uncertainty in personal dose measured using CaSO4:Dy-based TLD badge at different workplaces. 评估在不同工作场所使用基于 CaSO4:Dy 的 TLD 徽章测量的个人剂量的不确定性。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-06-22 DOI: 10.1093/rpd/ncae138

Suresh M Pradhan, Munir S Pathan, Shatabdi Chakrabarty, T Palani Selvam, Balvinder K Sapra

{"title":"Evaluation of uncertainty in personal dose measured using CaSO4:Dy-based TLD badge at different workplaces.","authors":"Suresh M Pradhan, Munir S Pathan, Shatabdi Chakrabarty, T Palani Selvam, Balvinder K Sapra","doi":"10.1093/rpd/ncae138","DOIUrl":"10.1093/rpd/ncae138","url":null,"abstract":"The metrological quality of a measurement is characterised by evaluating the uncertainty in the measurement. In this paper, uncertainty in personal dose measured using individual monitoring CaSO4:Dy-based thermoluminescence dosimeter badge is evaluated by application of the guide to the expression of uncertainty in measurement method. The present dose reporting quantity, whole body dose (WBD) and the proposed quantity, personal dose equivalent, Hp(10) has been used as measurands. The influence of various input quantities on the measurement were analyzed through tests that conform to the requirements of the International Electrotechnical Commission IEC 62387. The study found that the expanded uncertainties for WBD and Hp(10) measurements were 63.4% and 41.4%, respectively, corresponding to a 95% coverage probability for workplace fields covering a wide photon energy range (33-1250 keV). However, the uncertainty estimates were quite lower for the type of workplaces that are identified using the dose evaluation algorithm. The input quantities, namely, the response to a mixture of photon beam qualities and photon energy and angular dependence contribute the most to the total uncertainty.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141284612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dose, dose, dose, but where is the patient dose? 剂量、剂量、剂量，但病人的剂量在哪里？

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-06-22 DOI: 10.1093/rpd/ncae137

Madan M Rehani, Xie George Xu

引用次数: 0

Distribution of some natural and artificial radionuclides in soil from the city of Bitola (Macedonia) and its environs. 比托拉市（马其顿）及其周边地区土壤中某些天然和人工放射性核素的分布情况。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-06-22 DOI: 10.1093/rpd/ncae139

Irena Zlatanovska, Trajče Stafilov, Robert Šajn, Bojana Dimovska Gonovska, Snežana Dimovska, Jovan Janusheski, Lambe Barandovski

{"title":"Distribution of some natural and artificial radionuclides in soil from the city of Bitola (Macedonia) and its environs.","authors":"Irena Zlatanovska, Trajče Stafilov, Robert Šajn, Bojana Dimovska Gonovska, Snežana Dimovska, Jovan Janusheski, Lambe Barandovski","doi":"10.1093/rpd/ncae139","DOIUrl":"10.1093/rpd/ncae139","url":null,"abstract":"The aim of the study is a thorough investigation of the radioactivity level in soils of the town of Bitola (Macedonia) and its environs. Topsoil samples collected from 58 locations within a 5 × 5 km grid were analysed. Serving as a screening, gross alpha and beta activity measurements were performed using gas-flow proportional counter. Gamma-spectrometric measurements revealed the presence of three natural (40K, 226Ra, 232Th) and one artificial radionuclide (137Cs) in the samples. The activity concentrations of these radionuclides were consistent with the results of similar studies in neighbouring areas. Spatial distribution maps and factor analyses have revealed that the activity concentrations of the natural radionuclides are strongly influenced by geology and have no significant influence from human activities. A correlation of 137Cs activity concentrations with terrain elevation was also observed. The aim of the study is a thorough investigation of the radioactivity level in soils of the town of Bitola (Macedonia) and its environs. Topsoil samples collected from 58 locations within a 5 × 5 km grid were analysed. Serving as a screening, gross alpha and beta activity measurements were performed using gas-flow proportional counter. Gamma-spectrometric measurements revealed the presence of three natural (40K, 226Ra, 232Th) and one artificial radionuclide (137Cs) in the samples. The activity concentrations of these radionuclides were consistent with the results of similar studies in neighbouring areas. Spatial distribution maps and factor analyses have revealed that the activity concentrations of the natural radionuclides are strongly influenced by geology and have no significant influence from human activities. A correlation of 137Cs activity concentrations with terrain elevation was also observed.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141296634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-term monitoring of outdoor natural gamma absorbed dose rate in air in Bengaluru, Karnataka, India. 对印度卡纳塔克邦班加罗尔空气中室外天然伽马吸收剂量率的长期监测。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-06-22 DOI: 10.1093/rpd/ncae136

Pratip Mitra, Saurabh Srivastava, Gade Priyanka Reddy, Saurabh Garg, Aerattukkara Vinod Kumar

引用次数: 0

Assessment of natural radioactivity in the RCC building materials used in the valley region of Manipur, India. 评估印度曼尼普尔山谷地区使用的 RCC 建筑材料中的天然放射性。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-06-22 DOI: 10.1093/rpd/ncae142

Brahmacharimayum Arunkumar Sharma, Angom Ronibala Devi

引用次数: 0

Rapid assessment of cosmic radiation exposure in aviation based on BP neural network method. 基于 BP 神经网络方法的航空宇宙辐射快速评估。

IF 1 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-06-18 DOI: 10.1093/rpd/ncae126

Biao Wang, Meihua Fang, Dingyi Song, Jianfei Cheng, Kang Wu

{"title":"Rapid assessment of cosmic radiation exposure in aviation based on BP neural network method.","authors":"Biao Wang, Meihua Fang, Dingyi Song, Jianfei Cheng, Kang Wu","doi":"10.1093/rpd/ncae126","DOIUrl":"10.1093/rpd/ncae126","url":null,"abstract":"Cosmic radiation exposure is one of the important health concerns for aircrews. In this work, we constructed a back propagation neural network model for the real-time and rapid assessment of cosmic radiation exposure to the public in aviation. The multi-dimensional dataset for this neural network was created from modeling the process of cosmic ray transportation in magnetic field by geomagnetic cutoff rigidity method and air shower simulation by a Monte Carlo based Geant4 code. The dataset was characterized by parameters including cosmic ray energy spectrum, Kp-index, coordinated universal time, altitude, latitude, and longitude. The effective dose and dose rate was finally converted from the particle fluxes at flight position by the neural network. This work shows a good agreement with other models from International Civil Aviation Organization. It is also illustrated that the effective dose rate by galactic cosmic ray is <10 μSv h-1 and the value during ground level enhancement (GLE) 42 is 4 ~ 10 times larger on the routes calculated in this work. In GLE 69, the effective dose rate reaches several mSv h-1 in the polar region. Based on this model, a real-time warning system is achieved.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141093993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The exposure analysis of the long-term broadband EMF monitoring in the campus area of the University of Novi Sad. 对诺维萨德大学校园区长期宽带电磁场监测的暴露分析。

IF 1 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-06-18 DOI: 10.1093/rpd/ncae134

Dragan Kljajic, Nikola Djuric, Tamara Skoric, Snezana Djuric

引用次数: 0