Radiation protection dosimetry最新文献_第10页

Evaluation of materials for developing a new individual dosemeter using electron spin resonance spectroscopy. 利用电子自旋共振光谱学评估用于开发新型个体剂量计的材料。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae194

Yoshimasa Kitamura, Toshitaka Oka, Hajime Seito, Eri Yokozuka, Naotsugu Nagasawa, Yoshihiro Kitatsuji

引用次数: 0

Monitoring of tritium concentrations in tap water and rainwater collected in Thailand. 监测泰国收集的自来水和雨水中的氚浓度。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae159

Chonlada Pitakchaianan, Kanyanan Kosinarkaranun, Pantiwa Kumsut, Tatsuhide Hamasaki, Ryuta Hazama, Anawat Rittirong, Koichi Sakakibara, Yoshiyuki Hirano, Koki Kashiwaya, Yoshimune Ogata, Wanwisa Sudprasert, Kiadtisak Saenboonruang, Chittranuch Chantarot, Kakonwan Khamanek, Soontree Khuntong, Donruedee Toyen, Archara Phattanasub, Monthon Yongprawat, Chakrit Saengkorakot, Piyawan Krisanangkura, Yuka Kato

{"title":"Monitoring of tritium concentrations in tap water and rainwater collected in Thailand.","authors":"Chonlada Pitakchaianan, Kanyanan Kosinarkaranun, Pantiwa Kumsut, Tatsuhide Hamasaki, Ryuta Hazama, Anawat Rittirong, Koichi Sakakibara, Yoshiyuki Hirano, Koki Kashiwaya, Yoshimune Ogata, Wanwisa Sudprasert, Kiadtisak Saenboonruang, Chittranuch Chantarot, Kakonwan Khamanek, Soontree Khuntong, Donruedee Toyen, Archara Phattanasub, Monthon Yongprawat, Chakrit Saengkorakot, Piyawan Krisanangkura, Yuka Kato","doi":"10.1093/rpd/ncae159","DOIUrl":"https://doi.org/10.1093/rpd/ncae159","url":null,"abstract":"This study aimed to measure tritium (3H) concentrations in Thailand. Nationwide tap water samples were collected in July 2021. Rainwater samples were collected monthly during May-October 2020, April-October 2021, and February-March 2022 in Chonburi province and in Chiang Mai province during July-November 2021, January 2022, and March-June 2022. The measurements of 3H activity concentrations were conducted by Osaka Sangyo University (OSU) and were compared with measurements by the Thailand Institute of Nuclear Technology (TINT). The results from OSU and TINT showed that 3H concentrations in tap water were matched in the ranged from 0.08 ± 0.03 to 0.28 ± 0.04 Bq L-1, while those in rainwater samples collected from Chonburi province and Chiang Mai province are also matched in the ranged from 0.11 ± 0.02 to 0.21 ± 0.03 Bq L-1 and 0.19 ± 0.02 to 0.57 ± 0.04 Bq L-1, respectively. Our measured result suggests that 3H concentration in tap water and rainwater shows a similar relation depending on latitude.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":"200 16-18","pages":"1787-1791"},"PeriodicalIF":0.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626840","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

Assessment of annual effective doses from indoor radon and thoron in Doi Lo, Chiang Mai, Thailand. 泰国清迈Doi Lo地区室内氡和钍的年度有效剂量评估。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae130

Tarika Thumvijit, Siriprapa Somboon, Monruedee Tapanya, Kewalin Ruktinnakorn, Chutima Kranrod, Shinji Tokonami, Supitcha Chanyotha, Sompong Sriburee

引用次数: 0

Development of α-ray visualization survey meter in high gamma and neutron background environment. 开发高伽马和中子背景环境下的α射线可视化测量仪。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae169

Youichi Tsubota, Kenji Kobayashi, Tatsuya Ishii, Misaki Hirato, Satoshi Shioya, Takahiro Nakagawa

{"title":"Development of α-ray visualization survey meter in high gamma and neutron background environment.","authors":"Youichi Tsubota, Kenji Kobayashi, Tatsuya Ishii, Misaki Hirato, Satoshi Shioya, Takahiro Nakagawa","doi":"10.1093/rpd/ncae169","DOIUrl":"https://doi.org/10.1093/rpd/ncae169","url":null,"abstract":"A survey meter was developed to reliably detect and visualize surface contamination of suits and objects by α-nuclides in high γ/n-rays background radiation environment. The survey meter features a semi-opaque ZnS:Ag scintillator mounted directly onto a multi-anode photomultiplier tube (MA-PMT) and amplification circuits, ensuring output gain equalization for all channels. α-ray events induce localized light emission in thin-film scintillators. By directly mounting the scintillator, diffusion of light before reaching the MA-PMT is suppressed, concentrating it in just a few channels, thereby facilitating discrimination from background radiation. This design also enables clear visualization of the shape of surface contamination. The prototyped survey meter is capable of responding up to 2.1 × 107 cpm, with no γ-ray response even in high-radiation environments exceeding 1 Sv/h. In actual environments with high background radiation, contamination of ~1/100th of the surface contamination density limit of 4 Bq/cm2 could be reliably detected.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":"200 16-18","pages":"1676-1680"},"PeriodicalIF":0.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626583","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

Tritium concentration in monthly precipitation in Okinawa and Kagoshima, southern Japan. 日本南部冲绳和鹿儿岛月降水中的氚浓度。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae021

Naofumi Akata, Kaho Ohno, Haruka Kuwata, Khemruthai Kheamsiri, Yukiko Yoshinaka, Ryohei Yamada, Yuisa Kitayama, Sana Aizawa, Shunya Nakasone, Akinobu Ishimine, Masahiro Tanaka, Yoshitaka Shiroma, Shinji Tokonami, Masahide Furukawa

引用次数: 0

Investigating the association between dry deposition of cesium and different growth stages of aboveground parts of Chinese yam. 研究铯的干沉积与中国山药地上部分不同生长阶段的关系。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae103

Shogo Imada, Hitoshi Kawabata, Masumi Yanai

引用次数: 0

Long-term effects of continuous low dose-rate gamma-ray irradiation on mouse hematopoietic cells. 连续低剂量率伽马射线辐照对小鼠造血细胞的长期影响

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae153

Takanori Yanai, Syouko Kanaiwa-Kudo, Akiko Abe, Mikio Saitou, Shingo Nakamura, Satoshi Tanaka, Jun-Ichiro Komura, Toshiyuki Kobayashi

{"title":"Long-term effects of continuous low dose-rate gamma-ray irradiation on mouse hematopoietic cells.","authors":"Takanori Yanai, Syouko Kanaiwa-Kudo, Akiko Abe, Mikio Saitou, Shingo Nakamura, Satoshi Tanaka, Jun-Ichiro Komura, Toshiyuki Kobayashi","doi":"10.1093/rpd/ncae153","DOIUrl":"https://doi.org/10.1093/rpd/ncae153","url":null,"abstract":"The present work investigates the long-term effects of continuous low dose-rate (20 mGy/day to total doses of 1-8 Gy) gamma-ray exposure on the hematopoietic cells of specific pathogen-free C3H/HeN mice. Peripheral white blood cell (WBC) counts decreased on days 206, 471, and 486, with no significant changes in red blood cell (RBC) and platelet (PLT) counts. The number of colony forming units (CFU-S and CFU-GM) in the bone marrow and spleen from irradiated mice decreased with increasing total dose on day-12 and day-7. The decrease in bone marrow CFU-S persisted throughout the 400-day irradiation period and did not show any recovery up to 210 days postirradiation. These findings suggest that the effects of low-dose-rate (LDR) radiation on the hematopoietic system remain long after the 400-day irradiation was completed. Further investigation showed no significant difference in life spans of non-irradiated W/Wv (c-kit-deficient) mice inoculated with hematopoietic stem cells from irradiated (20 mGy/day for 400 days) or nonirradiated wild-type mice. These results suggest that the effects of continuous low-dose-rate irradiation are more pronounced in hematopoietic stromal cells than in HSCs themselves.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":"200 16-18","pages":"1603-1607"},"PeriodicalIF":0.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626791","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 effects of antioxidant administration in the early stages of radiation-induced tumorigenesis. 在辐射诱导肿瘤发生的早期阶段服用抗氧化剂的效果。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae145

Kazumi Yamauchi, Yuki Tsutsumi, Toshiyuki Kobayashi, Jun-Ichiro Komura

{"title":"The effects of antioxidant administration in the early stages of radiation-induced tumorigenesis.","authors":"Kazumi Yamauchi, Yuki Tsutsumi, Toshiyuki Kobayashi, Jun-Ichiro Komura","doi":"10.1093/rpd/ncae145","DOIUrl":"https://doi.org/10.1093/rpd/ncae145","url":null,"abstract":"ApcMin/+ mouse was a model mouse for human familial adenomatous polyposis, and irradiation at an early age increases tumors in the small and large intestine. To study the effects of antioxidant administration on tumor incidence after continuous whole-body exposure to gamma rays, ApcMin/+ mice were exposed to a medium-dose-rate, 200 mGy/d, from postnatal Day 0 to 21 of age or a high-dose-rate of 0.65 Gy/min (total dose 4.2 Gy) on postnatal Day 7. The dams and pups were supplied with the N-acetylcysteine (NAC) in drinking water (7 g/L), from gestation Day 15 until weaning (21 days-old). A significant increase in the number of intestinal tumors were observed in ApcMin/+ mice irradiated with high dose-rate gamma rays as compared with the non-irradiated controls, but there was no significant difference in tumor counts between the non-irradiated controls and the medium-dose rate irradiation groups. NAC administration did not have any significant effect at least at this dose. These results suggest that the supplementation of anti-oxidant at the early stage of tumorigenesis does not suppress the formation of irradiation-induced small intestinal tumors.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":"200 16-18","pages":"1594-1597"},"PeriodicalIF":0.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626863","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

Preface. 序言

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae205

Shinji Tokonami, Yoshiya Shimada, Shinji Ueda, James Mc Laughlin, Tibor Kovács

引用次数: 0

Spectroscopic analysis of alpha particles from radioactive nuclides with CR-39 plastic nuclear track detectors. 利用 CR-39 塑料核轨道探测器对放射性核素的阿尔法粒子进行光谱分析。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2024-11-13 DOI: 10.1093/rpd/ncae068

Satoshi Kodaira, Miroslaw Janik

引用次数: 0