Volume 10, No.5

目次 / Table of Contents

September issue 2005


吉良 爽 KIRA Akira

(財)高輝度光科学研究センター 理事長 Director General of JASRI

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1. SPring-8の現状/PRESENT STATUS OF SPring-8

Interim Evaluation of WEBRAM Beamline (BL15XU)

(財)高輝度光科学研究センター 利用業務部 User Administration Division, JASRI

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SPring-8 Operational Status

(財)高輝度光科学研究センター 研究調整部 Research Coordination Division, JASRI

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Statistics on Publications Resulting from Work at SPring-8

(財)高輝度光科学研究センター 利用業務部 User Administration Division, JASRI

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2006A SPring-8共用ビームライン利用研究課題の募集について
Call for 2006A Proposals

放射光利用研究促進機構 (財)高輝度光科学研究センター Organization for the Promotion of Synchrotron Radiation Research, JASRI

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2006A 重点ナノテクノロジー総合支援プロジェクト対象課題の募集について
Call for 2006A Nanonet Proposals (under the Nanotechnology Researchers Network Project)

放射光利用研究促進機構 (財)高輝度光科学研究センター Organization for the Promotion of Synchrotron Radiation Research, JASRI

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2006A 萌芽的研究支援 利用研究課題の募集について
Call for 2006A Budding Researchers Support Proposals Experiments

放射光利用研究促進機構 (財)高輝度光科学研究センター Organization for the Promotion of Synchrotron Radiation Research, JASRI

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放射光利用研究促進機構 (財)高輝度光科学研究センター Organization for the Promotion of Synchrotron Radiation Research, JASRI

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2006A 長期利用研究課題の募集について
Call for 2006A Long-term Proposals

放射光利用研究促進機構 (財)高輝度光科学研究センター Organization for the Promotion of Synchrotron Radiation Research, JASRI

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平成18年度先端大型研究施設戦略活用プログラム第1回課題公募 (SPring-8利用課題並びにSPring-8及び地球シミュレータ併用課題)について
Call for 2005B Strategic Use proposals (Program for Strategic Use of Advanced Large-scale Research Facilities of the Ministry of Education, Culture, Sports, Science and Technology)

放射光利用研究促進機構 (財)高輝度光科学研究センター Organization for the Promotion of Synchrotron Radiation Research, JASRI

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Proposals Accepted for Beamtime in the 16th Research Term (2005B)

放射光利用研究促進機構 (財)高輝度光科学研究センター 利用業務部 Organization for the Promotion of Synchrotron Radiation Research / User Administration Division, JASRI

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Results of the Call for Strategic Use Proposals

(財)高輝度光科学研究センター 産業利用推進室 Industrial Application Division, JASRI

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Experiments Conducted in the 15th Research Term (2005A) at SPring-8 Public Beamlines

(財)高輝度光科学研究センター 利用業務部 User Administration Division, JASRI

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List of Recent Publications

(財)高輝度光科学研究センター 利用業務部 User Administration Division, JASRI

Pages 331 - 341pdfDownload PDF (66 KB)


ナノビームによる細胞選択的元素測定 〜精子に取り込まれた微量スズの検出に世界で初めて成功〜
Cell-selective Determination of Trace Elements in Testis by SR-XRF Analysis with Nanoprobe

武田(本間)志乃 HOMMA-TAKEDA Shino[1]、西村 義一 NISHIMURA Yoshikazu[1]、渡辺 嘉人 WATANABE Yoshito[1]、湯川 雅枝 YUKAWA Masae[1]、上野 俊治 UENO Shunji[2]、寺田 靖子 TERADA Yasuko[3]

[1]放射線医学総合研究所 National Institute of Radiological Sciences、[2]北里大学 獣医畜産学部 Kitasato University, School of Veterinary Medicine & Animal Sciences、[3](財)高輝度光科学研究センター JASRI

Organotin compounds are widely used in industry and its environmental contamination by these compounds has recently become a concern. It is known that they act as endocrine disruptors but details of the dynamics of Sn in reproductive organs are still unknown. In the present study, we attempted to determine Sn in the testis of rats exposed to tributyltin chloride (TBTC) cell-selectively by synchrotron radiation X-ray florescence analysis with nanoprobe. TBTC was orally administered to rats at a dose of 45 µmol/kg per day for 3 days. One day later, Sn was detected in spermatozoa at the stage VIII seminiferous tubule, which are the final step of spermatogenesis in the testis. Sn levels in the microdissectioned seminiferous tubules determined by inductively coupled argon plasma-mass spectrometry were approximately equivalent to that in the testis. These data indicate that Sn accumulates in germ cells as well as in spermatozoa in a short period of TBTC exposure.
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Synchrotron X-ray Diffraction Studies under High Magnetic Fields and Low Temperatures

勝又 紘一 KATSUMATA Koichi

(独)理化学研究所 播磨研究所 Harima Institute, RIKEN

Diffraction studies of magnetic materials subjected to extreme conditions are illustrated with observations made by non-resonant X-ray diffraction, using beam-line BL19LXU at SPring-8, on materials held in high magnetic fields and low temperatures. The first observation is that of a giant magneto-volume effect in solid oxygen. From this finding, we confirm that magnetic interactions between oxygen molecules are a vital ingredient in determining the crystal structure. A second example is the determination of the high-field phase of a spin-Peierls system CuGeO3. The X-ray diffraction pattern was measured in a magnetic field, H, up to 15 T. We find that the temperature dependence of the incommensurate peak is quite different at lower H from that at higher H, which is interpreted as stabilization of the incommensurate state by suppression of thermal fluctuations that is brought about by application of a magnetic field. The third example entails diffraction measurements on a sample held at a very low temperature. We observed a jump in the lattice constant of the ladder-like compound Cu2(C5H12N2)2Cl4 at about 40 mK associated with the field-induced magnetic ordering from the non-magnetic spin-liquid state. This is the first experimental confirmation of the theoretical prediction on the generalized spin-Peierls phenomenon in quantum magnets. Finally, future prospects are given.
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First Observation of Soft X-ray Circular Dichroism for Biomolecules

中川 和道 NAKAGAWA Kazumichi

神戸大学 発達科学部 Faculty of Human Development, kobe University

Circular dichroism spectra of evaporated films of two amino acids (Phenylalanine and Serine) were measured at the soft X-ray energy region for the first time. Magnitude of signal was 0.1 % of the absorption coefficient. Asymmetric reaction will be explored from a view point of origin of life.
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The 9th SPring-8 Symposium
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A Technical Report on the Burst of a Cryostat
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平成17年度 先端大型研究施設戦略活用プログラム緊急実施型利用について
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Table of Contents
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Editorial Board
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Back Cover
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Print ISSN 1341-9668
[ - Vol.15 No.4(2010)]
Online ISSN 2187-4794