The Takizawa Pixe Facility Combined With a Baby Cyclotron for Positron Nuclear Medicine

Sera, K.; Yanagisawa, Toru; Tsunoda, Humio; Futatsugawa, S.; Hatakeyama, Satoru; Suzuki, S.; Orihara, H.

doi:10.1142/s0129083592000051

Cited by 33 publications

(5 citation statements)

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“…The estimated detection limits for the toxic elements Cd, Hg, Pb, and As were 20, 3, 3, and 1.4 ppm, respectively. A detailed description of the measurement setup is provided elsewhere (Sera & Yanagisawa, 1992).…”

Section: Chemical Analysismentioning

confidence: 99%

Temporal Changes in Environmental Health Risks and Socio-Psychological Status in Areas Affected by the 2011 Tsunami in Ishinomaki, Japan

Makita¹,

INOSHITA²,

Kayano³

et al. 2013

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Section: Chemical Analysismentioning

confidence: 99%

Temporal Changes in Environmental Health Risks and Socio-Psychological Status in Areas Affected by the 2011 Tsunami in Ishinomaki, Japan

Makita¹,

INOSHITA²,

Kayano³

et al. 2013

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“…[6] New correction factors are calculated by using the second-order results of the principal elements. [7] Calculation is repeated until a self-consistent solution between correction factors and values of concentration of the main elements is obtained. ( Generally, a few times iteration is sufficient.)…”

Section: Discussionmentioning

confidence: 99%

“…For lower-energy x-rays, a No.2 Si(Li) (0.008 mm Be) was used without absorber but with an x-ray collimator simultaneously. A detailed description of the experimental arrangement is given in references [7] and [8]. The computer code used for spectrum analysis is "SAPIX" 6 developed by ourselves.…”

Section: Measuring Conditionsmentioning

confidence: 99%

Quantitative Analysis of Powdered Samples Composed of High-Z Elements

Sera

Futatsugawa

1998

Int. J. PIXE

Self Cite

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A method of quantitative analysis which is capable of analyzing powdered samples consisting of high-Z elements, such as ash, soil and aerosol, is developed. It is confirmed that an internal standard method using a powdered internal standard, which has almost the same particle size as that of a sample, gives quantitative values of concentration with satisfactory accuracy and reproducibility. It was successfully applied to standard samples such as NIST-Urban particulate matter (1648), GBW-Tibet soil (08302), BCR-City waste incineration ash (0497) and also to a practical fly-ash sample. As a result, it is found that the effect of selfabsorption in the target is not negligible even for samples whose particle size is less than 4 (xm, and a method of correcting it is established. Firstly, the effective thickness for self-absorption is estimated by comparing peak yields of a certain element for two measuring conditions of beam irradiation from the surface and from the back of the target. The correction factors can be estimated by using the effective thickness, values of concentration of principal elements and their photon absorption cross sections. For practical samples whose compositions are unknown, it is confirmed that accurate correction coefficients can be derived by carrying out an iterative calculation until a self-consistent solution between values of concentration of the main constituents and the correction factors is obtained.

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“…Each sample was digested using the nitric acid ashing method, which was described in our previous issue [22], For quantization, Ag was added at a rate of lmg to 1 g of sample . The digested samples dropped onto polyethylene film, dried at room temperature and then used as targets.…”

Section: Analysis Of Trace Elements By Pixementioning

confidence: 99%

The Cell Exit of Apoptosis From the S-Phase of Cell Cycle and Different Correlation Between Magnesium and Zinc Compared With the Other Kinds of Cells

et al. 1998

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The abnormal cell exit of apoptosis from S-phase, correlation between apoptosis and Mg, and between its Sphase fraction and Zn were studied in inoculated Sarcoma-180 receivinglO or 20 Gy of m Co gamma ray, IN VIVO, in BALB/c mice. The apoptosis and S-phase fraction were detected by double immunostaining : 1) TUNEL that colors apoptosis brown; and 2) histone H3 mRNA probe that results in blue deposition to S-phase of cells. The concentrations of Mg and Zn were studied by PIXE. The Mg strongly correlated with the frequency of apoptosis, but other kinds of cells did not. On the contrary, The S-phase fraction of apoptosis did not correlated with Zn, but S-phase of other kinds of cells did. This different correlation suggests the different metabolism between apoptosis and other kinds of cell.

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The Takizawa Pixe Facility Combined With a Baby Cyclotron for Positron Nuclear Medicine

Cited by 33 publications

References 0 publications

Temporal Changes in Environmental Health Risks and Socio-Psychological Status in Areas Affected by the 2011 Tsunami in Ishinomaki, Japan

Temporal Changes in Environmental Health Risks and Socio-Psychological Status in Areas Affected by the 2011 Tsunami in Ishinomaki, Japan

Quantitative Analysis of Powdered Samples Composed of High-Z Elements

The Cell Exit of Apoptosis From the S-Phase of Cell Cycle and Different Correlation Between Magnesium and Zinc Compared With the Other Kinds of Cells

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