Pub Date : 2016-01-01DOI: 10.1142/S0129083516500054
S. Harada, S. Ehara, T. Segawa, K. Ishii, Takahiro Sato, T. Kamiya, K. Sera, S. Goto
The nanoparticles, which releases anticancer drug with response to radiation, were developed. Also, two categories were tested: (i) their ability to release anticancer drug in vitro; and (ii) their...
{"title":"Innovation of hyaluronic acid-protamine microparticles and their kinetics in vivo","authors":"S. Harada, S. Ehara, T. Segawa, K. Ishii, Takahiro Sato, T. Kamiya, K. Sera, S. Goto","doi":"10.1142/S0129083516500054","DOIUrl":"https://doi.org/10.1142/S0129083516500054","url":null,"abstract":"The nanoparticles, which releases anticancer drug with response to radiation, were developed. Also, two categories were tested: (i) their ability to release anticancer drug in vitro; and (ii) their...","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"254 1","pages":"45-51"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82934954","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}
Pub Date : 2016-01-01DOI: 10.1142/S0129083517500024
Yuri Sueoka, M. Sakakibara, S. Sano, K. Sera
Levels of trace element pollution in surface soil have been estimated using soil analyses and leaching tests. These methods may reveal different results due to the effect of soil properties on the ...
{"title":"Heavy metal accumulation and the practical application of lichens as bioindicators for heavy metal pollution in surface soil","authors":"Yuri Sueoka, M. Sakakibara, S. Sano, K. Sera","doi":"10.1142/S0129083517500024","DOIUrl":"https://doi.org/10.1142/S0129083517500024","url":null,"abstract":"Levels of trace element pollution in surface soil have been estimated using soil analyses and leaching tests. These methods may reveal different results due to the effect of soil properties on the ...","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"5 1","pages":"85-91"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72885483","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}
Pub Date : 2016-01-01DOI: 10.1142/S0129083517500048
M. Sakai, K. Sera, S. Goto
Recently, atmospheric particles, including Asian dust, have attracted considerable attention because of their potential effects on the environment and human health. From March to May, a huge volume...
{"title":"Using the PIXE method to evaluate the characteristics of aerosols in Kumamoto City, Southwestern Japan, from March 2004 to March 2007","authors":"M. Sakai, K. Sera, S. Goto","doi":"10.1142/S0129083517500048","DOIUrl":"https://doi.org/10.1142/S0129083517500048","url":null,"abstract":"Recently, atmospheric particles, including Asian dust, have attracted considerable attention because of their potential effects on the environment and human health. From March to May, a huge volume...","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"18 1","pages":"103-112"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75613138","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}
Pub Date : 2016-01-01DOI: 10.1142/S012908351750005X
K. Sera, S. Goto, T. Hosokawa, Y. Saitoh
In the present study, we used a silicon drift detector (SDD) for the quantitative analysis of in-air PIXE. First, we examined the basic performances of the detector. We found that the shift of the ...
{"title":"Use of a silicon drift detector (SDD) in the quantitative analysis of in-air PIXE","authors":"K. Sera, S. Goto, T. Hosokawa, Y. Saitoh","doi":"10.1142/S012908351750005X","DOIUrl":"https://doi.org/10.1142/S012908351750005X","url":null,"abstract":"In the present study, we used a silicon drift detector (SDD) for the quantitative analysis of in-air PIXE. First, we examined the basic performances of the detector. We found that the shift of the ...","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":" 35","pages":"113-128"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91411589","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}
Pub Date : 2016-01-01DOI: 10.1142/S0129083516500042
K. Sera, S. Goto, T. Hosokawa, C. Takahashi, J. Itoh, Y. Saitoh, S. Futatsugawa
A standard-free method for untreated hairs has been applied to quantitative analysis of the hairs taken from 1256 healthy people living in the Iwate prefecture, Japan. It was found that there are c...
{"title":"Elemental concentration in the hair taken from healthy people for the past 20 years — 2. Sex-specific differences and changes with age","authors":"K. Sera, S. Goto, T. Hosokawa, C. Takahashi, J. Itoh, Y. Saitoh, S. Futatsugawa","doi":"10.1142/S0129083516500042","DOIUrl":"https://doi.org/10.1142/S0129083516500042","url":null,"abstract":"A standard-free method for untreated hairs has been applied to quantitative analysis of the hairs taken from 1256 healthy people living in the Iwate prefecture, Japan. It was found that there are c...","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"34 1","pages":"29-43"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86773864","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}
Pub Date : 2016-01-01DOI: 10.1142/S0129083516500078
M. Yamaguchi, Y. Nagao, N. Kawachi, T. Satoh, S. Fujimaki, T. Kamiya, K. Torikai, H. Shimada, H. Sugai, M. Sakai, K. Arakawa, T. Nakano
We studied feasibility of detection of a gap which is located across a beam track by measuring low-energy (63–68 keV) photons generated by beam irradiation. An experiment was performed with the Heavy Ion Medical Accelerator in Chiba (HIMAC). A 12C beam having 290 MeV/u was injected on a target consisting of two acrylic blocks. These two blocks were placed with a 10 mm gap along the beam axis. A detection system consisting of a semiconductor detector, a lead collimator having a slit, and borated polyethylene blocks was placed on a movable stage to detect low-energy photons emitted perpendicularly to the beam axis. The position of the detection system was moved at 2 mm intervals along the beam axis. It was found that the yield of 63–68 keV photons was clearly correlated with the position of the detection system. The position at which the yield curve had the lowest value agreed with the gap position. We also confirmed that the experimental result was well reproduced by a Monte Carlo simulation that includes generation of secondary electron bremsstrahlung.
{"title":"Detection of a gas region in a human body across a therapeutic carbon beam by measuring low-energy photons","authors":"M. Yamaguchi, Y. Nagao, N. Kawachi, T. Satoh, S. Fujimaki, T. Kamiya, K. Torikai, H. Shimada, H. Sugai, M. Sakai, K. Arakawa, T. Nakano","doi":"10.1142/S0129083516500078","DOIUrl":"https://doi.org/10.1142/S0129083516500078","url":null,"abstract":"We studied feasibility of detection of a gap which is located across a beam track by measuring low-energy (63–68 keV) photons generated by beam irradiation. An experiment was performed with the Heavy Ion Medical Accelerator in Chiba (HIMAC). A 12C beam having 290 MeV/u was injected on a target consisting of two acrylic blocks. These two blocks were placed with a 10 mm gap along the beam axis. A detection system consisting of a semiconductor detector, a lead collimator having a slit, and borated polyethylene blocks was placed on a movable stage to detect low-energy photons emitted perpendicularly to the beam axis. The position of the detection system was moved at 2 mm intervals along the beam axis. It was found that the yield of 63–68 keV photons was clearly correlated with the position of the detection system. The position at which the yield curve had the lowest value agreed with the gap position. We also confirmed that the experimental result was well reproduced by a Monte Carlo simulation that includes generation of secondary electron bremsstrahlung.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"45 1","pages":"61-72"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73852852","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}
Pub Date : 2016-01-01DOI: 10.1142/S0129083516500030
K. Sera, S. Goto, T. Hosokawa, C. Takahashi, J. Itoh, Y. Saitoh, S. Futatsugawa
We developed a standard-free method for untreated hairs and the method has been applied to quantitative analysis of more than 30,000 hairs taken from the people concerned in order to evaluate exposure to some toxic elements and intakes of essential elements. Besides these analyses, we have measured nearly 2000 hairs collected from healthy people in Japan over the past 20 years. It was found that concentrations of some elements, such as vanadium, chromium, manganese, copper and mercury, keep increasing up to the present. Such tendencies were particularly notable for female, while not clearly observed for male. Concentrations of some essential elements, such as calcium, magnesium and zinc, show no obvious long-term variations. On the other hand, iron and selenium show slightly decreasing tendencies. With regard to toxic elements, it was found that arsenic, chromium and mercury are tending to increase year by year.
{"title":"Elemental concentration in the hair taken from healthy people for the past 20 years — 1. Long-term changes over 20 years","authors":"K. Sera, S. Goto, T. Hosokawa, C. Takahashi, J. Itoh, Y. Saitoh, S. Futatsugawa","doi":"10.1142/S0129083516500030","DOIUrl":"https://doi.org/10.1142/S0129083516500030","url":null,"abstract":"We developed a standard-free method for untreated hairs and the method has been applied to quantitative analysis of more than 30,000 hairs taken from the people concerned in order to evaluate exposure to some toxic elements and intakes of essential elements. Besides these analyses, we have measured nearly 2000 hairs collected from healthy people in Japan over the past 20 years. It was found that concentrations of some elements, such as vanadium, chromium, manganese, copper and mercury, keep increasing up to the present. Such tendencies were particularly notable for female, while not clearly observed for male. Concentrations of some essential elements, such as calcium, magnesium and zinc, show no obvious long-term variations. On the other hand, iron and selenium show slightly decreasing tendencies. With regard to toxic elements, it was found that arsenic, chromium and mercury are tending to increase year by year.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"95 1","pages":"15-28"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84379608","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}
Pub Date : 2016-01-01DOI: 10.1142/S0129083517500012
Y. Takahatake, Sou Watanabe, H. Kofuji, M. Takeuchi, K. Nomura, T. Satoh
Japan Atomic Energy Agency (JAEA) has been conducting research and development of MA(III) recovery from high level liquid waste (HLLW) by extraction chromatography technology for reduction in amount and environmental impact of radioactive waste. The behavior of adsorbed cations inside the adsorbent packed in a column is necessary to be evaluated for improvement of the adsorbent or flow-sheet to achieve targeted MA(III) recovery performance. In this paper, micro-PIXE analysis was carried out on the particles sampled from various positions of the column to reveal the behavior of cations inside the packed column with CMPO/SiO2-P adsorbent using RE(III) as simulated elements of MA(III). Simple experiment and data analysis were shown to be effective to reveal inside of the column, and formation and transportation of the adsorption bands were observed for some cations which are extractable by the CMPO extractant. Some part of Zr(IV) and Mo(VI) were found to remain inside the column without distinct transportation even after the elution operation. Those results will contribute to design more practical MA(III) recovery flow-sheet.
{"title":"Micro-PIXE analysis on adsorbent of extraction chromatography for MA(III) recovery","authors":"Y. Takahatake, Sou Watanabe, H. Kofuji, M. Takeuchi, K. Nomura, T. Satoh","doi":"10.1142/S0129083517500012","DOIUrl":"https://doi.org/10.1142/S0129083517500012","url":null,"abstract":"Japan Atomic Energy Agency (JAEA) has been conducting research and development of MA(III) recovery from high level liquid waste (HLLW) by extraction chromatography technology for reduction in amount and environmental impact of radioactive waste. The behavior of adsorbed cations inside the adsorbent packed in a column is necessary to be evaluated for improvement of the adsorbent or flow-sheet to achieve targeted MA(III) recovery performance. In this paper, micro-PIXE analysis was carried out on the particles sampled from various positions of the column to reveal the behavior of cations inside the packed column with CMPO/SiO2-P adsorbent using RE(III) as simulated elements of MA(III). Simple experiment and data analysis were shown to be effective to reveal inside of the column, and formation and transportation of the adsorption bands were observed for some cations which are extractable by the CMPO extractant. Some part of Zr(IV) and Mo(VI) were found to remain inside the column without distinct transportation even after the elution operation. Those results will contribute to design more practical MA(III) recovery flow-sheet.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"4 1","pages":"73-83"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87432362","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}
Pub Date : 2016-01-01DOI: 10.1142/S0129083517500036
K. Kataoka, Tomomi Yamada, Todd Saunders, T. Takatsuji, K. Sera, Tsuyoshi Nakamura, Y. Nose
The objective of this study is to examine the variations in hair mineral concentrations measured by particle induced X-ray emission (PIXE). As the concentrations reflect the historical profile of m...
本研究的目的是通过粒子诱导x射线发射(PIXE)检测头发矿物质浓度的变化。浓度反映了m的历史剖面。
{"title":"Statistical aspects of variations in hair mineral measurements","authors":"K. Kataoka, Tomomi Yamada, Todd Saunders, T. Takatsuji, K. Sera, Tsuyoshi Nakamura, Y. Nose","doi":"10.1142/S0129083517500036","DOIUrl":"https://doi.org/10.1142/S0129083517500036","url":null,"abstract":"The objective of this study is to examine the variations in hair mineral concentrations measured by particle induced X-ray emission (PIXE). As the concentrations reflect the historical profile of m...","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"3 1","pages":"93-101"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83615875","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}
Pub Date : 2016-01-01DOI: 10.1142/S0129083516500029
T. Maruyama, K. Ishii, M. Fujiwara, S. Matsuyama, A. Terakawa, H. Arai, Y. Saneshige
We succeeded in observation of ferrokinetics in a plant (20 days radish) using the micron RI imaging which was previously developed in our laboratory, by improving two criteria: (i) adjustment of t...
{"title":"Observation of ferrokinetics in a plant using the micron RI imaging system","authors":"T. Maruyama, K. Ishii, M. Fujiwara, S. Matsuyama, A. Terakawa, H. Arai, Y. Saneshige","doi":"10.1142/S0129083516500029","DOIUrl":"https://doi.org/10.1142/S0129083516500029","url":null,"abstract":"We succeeded in observation of ferrokinetics in a plant (20 days radish) using the micron RI imaging which was previously developed in our laboratory, by improving two criteria: (i) adjustment of t...","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"16 1","pages":"7-13"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85381067","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}
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