著者

鈴木 茂雄 河田 洋

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.27, no.2, pp.128-138, 1985

被引用文献数

1

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Described briefly are the present status of the experimental apparatus installed at the topography station and some user experimental results. At this station, it is possible to do the real time observation using VTR recording of topographic images of crystals either by direct method (saticon TV) or by indirect method (fluorescent film+TV) . Spot indexing of the Laue pattern and quick setting of the specimen orientation by computer has been developed. Many users have done various experiments since 1982 under various environmental conditions using white synchrotron radiation from normal bending magnet (BL-15) and wiggler magnet (BL-14) . Some examples of dynamic observations of the crystal imperfection, melting or solidification phenomenon, phase transition, and wall motion of the magnetic domain are shown.

著者

松岡 秀樹

出版者

The Crystallographic Society of Japan

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.41, no.4, pp.213-226, 1999-08-30 (Released:2010-09-30)

参考文献数

38

被引用文献数

19 14

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Fundamental aspects of small-angle scattering technique are duly explained from the very basic points for the beginners and newcommers of this useful technique to study the strucuture of“Vernachlasisgten Dimensionen”.

著者

虎谷 秀穂

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.60, no.2-3, pp.113-120, 2018-05-31 (Released:2018-06-02)

参考文献数

19

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A new method, called the direct derivation(DD) method, for quantitative phase analysis(QPA) can derive weight fractions of individual crystalline phases from sets of observed intensities and chemical composition data. The Patterson function plays an important role in replacing the sum of squared structure factors, calculated in the Rietveld method, with the sum of squared numbers of electrons belonging to the atoms in the chemical formula unit. Therefore, the DD method can conduct QPA of Rietveld equivalent without referencing to structure parameters. It can be applied to QPA of mixtures containing known structure, unknown structure, and high and low crystalline materials.

著者

山根 崚

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.63, no.3, pp.179-180, 2021-08-31 (Released:2021-09-02)

参考文献数

7

著者

冨田 研一

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.12, no.2, pp.76-84, 1970-06-10 (Released:2010-09-30)

参考文献数

31

著者

森本 信男

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.11, no.1, pp.1, 1969-03-31 (Released:2010-09-30)

著者

佐々木 教祐

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.19, no.3, pp.219-220, 1977-05-31 (Released:2010-09-30)

著者

佐々木 教祐

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.20, no.3, pp.186-188, 1978-05-30 (Released:2010-09-30)

参考文献数

3

著者

藤原 隆二

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.19, no.3, pp.220-222, 1977-05-31 (Released:2010-09-30)

参考文献数

11

著者

植木 竜夫

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.13, no.3, pp.139-141, 1971-06-25 (Released:2010-09-30)

参考文献数

5

著者

大政 正明

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.18, no.4, pp.303-304, 1976-07-30 (Released:2010-09-30)

著者

菊池 正士

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.12, no.3, pp.170-173, 1970-09-10 (Released:2010-09-30)

著者

岩崎 不二子

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.22, no.2, pp.244-246, 1980-03-30 (Released:2010-09-30)

著者

仁田 勇

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.12, no.2, pp.108-111, 1970-06-10 (Released:2010-09-30)

著者

関 朋宏

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.63, no.3, pp.175-176, 2021-08-31 (Released:2021-09-02)

参考文献数

13

著者

近藤 次郎

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.63, no.3, pp.224-226, 2021-08-31 (Released:2021-09-02)

参考文献数

14

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High-speed, fully automated data collection allows us to conduct DNA Monozukuri (manufacturing) based on a large number of 3D structural information. In the process of designing and synthesizing prototype DNAs by mimicking structures deposited in Protein Data Bank (PDB), brushing up their functions, and obtaining the finished products, each of the previously- and newly-solved crystal structures will be respected and reviewed/observed in more detail than before.

著者

山田 悠介

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.63, no.3, pp.208-211, 2021-08-31 (Released:2021-09-02)

参考文献数

13

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There are five macromolecular crystallography beamlines at the Photon Factory. All beamlines support fully automated unattended data collection and remote interactive data collection, and users can select them when they submit beamtime requests. The beamlines also support browsing of results of the past experiments as well as the automated data analysis pipelines. The interactive data processing and raw data download from remote will be supported in the next autumn.

著者

藤橋 雅宏

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.63, no.3, pp.222-223, 2021-08-31 (Released:2021-09-02)

参考文献数

3

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The recent developments of automated data collection and remote access technologies at synchrotron facility are highly remarkable. Here I describe our recent attempt to identify phosphates using their anomalous signals without visiting synchrotron facility. Crystals were screened using automated data collection with the X-ray at the wavelength of 1.0 Å. Then the solvent around the qualified crystals was removed by deep-UV laser ablation. The diffraction datasets were subsequently collected from the solvent-removed crystals using the X-ray at the wavelength of 2.7 Å. Anomalous Fourier map from the dataset collected with 2.7 Å X-ray was superposed on the electron density map calculated from the dataset collected with 1.0 Å X-ray. The two maps clearly indicated the positions of non-Carbon/Nitrogen/Oxygen atoms in the crystal. Our trial proved that considerable parts of the experiments in the synchrotron facility could be performed from the remote site.

著者

神谷 信夫 沈 建仁

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.59, no.2-3, pp.64-71, 2017-06-30 (Released:2017-07-01)

参考文献数

45

被引用文献数

4

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Photosystem II (PSII) is a multi-subunit protein complex embedded in the thylakoid membrane and splits water molecules, producing electrons, protons and molecular oxygen in photosynthesis. We started to purify and crystallize PSII in 1990, which led to the first crystal structure analysis at a resolution of 3.7 Å in 2003 using SPring-8. The resolution of the structure was raised to 1.9 Å in 2011, which was considered a breakthrough in the filed of photosynthesis because, on the basis of this atomic resolution structure, it became possible to discuss the molecular mechanism of the water-splitting reaction. We are continuing our studies to obtain much more precise information on the oxygen-evolving complex (OEC) at the S1-state of the Kok cycle and to analyze the intermediate state structures using femtosecond X-ray pulses from XFEL of SACLA.

著者

吉沢 康和

出版者

The Crystallographic Society of Japan

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.21, no.6, pp.342-349, 1979-11-30 (Released:2010-09-30)

参考文献数

24

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The principle and the history of the Doppler broadening method is described. Recent topics of this method for studies of alkali halide crystals and inner electron shell structures are reviewed. In addition, characterics of this method are summarized.