著者

吉朝 朗

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.43, no.4, pp.297-305, 2001-08-31 (Released:2010-09-30)

参考文献数

9

被引用文献数

2 1

著者

吉朝 朗 徳田 誠 三澤 賢明

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.61, no.3, pp.155-156, 2019-08-31 (Released:2019-08-31)

参考文献数

5

著者

松垣 直宏 山田 悠介 引田 理英 平木 雅彦 千田 美紀 千田 俊哉

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.62, no.1, pp.56-61, 2020-02-29 (Released:2020-03-06)

参考文献数

21

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Applying long wavelength X-ray (ca. longer than 2 Å) in macromolecular crystallography has been limited due to the lack of dedicated measurement environment. Photon Factory BL-1A, as an MX beamline optimized for diffraction experiment using the wavelength from 2.7 to 3.3 Å, offers the opportunity to routinely perform data collection for Native SAD phasing or light atoms identification with much sophisticated manner. Sample optimization is another key for successful experiment at the wavelength where severe absorption is inevitable. We describe how the difficulties in use of long wavelength X-ray were overcome at the beamline and the auxiliary facility, as well as the current results of Native SAD phasing.

著者

石井 靖

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.49, no.1, pp.55-60, 2007-02-28 (Released:2010-09-30)

参考文献数

17

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First-principles calculation of electronic structures of approximant crystals is a reliable tool for studying cohesion mechanism and electronic properties of real quasicrystals. This article aims at explaining the first-principles calculation as methodology of quasicrystal reaseach. After brief introduction of approximant and methods of the first-principles calculations, we present several approaches, including the tight-binding method and the plane-wave-basis method, for Cd-M (M = Ca, Mg) binary systems.

著者

熊崎 薫 濡木 理 石谷 隆一郎

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.56, no.4, pp.230-235, 2014-08-31 (Released:2014-09-03)

参考文献数

15

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Structural determination of membrane proteins is a key step to understand the molecular mechanisms of the membrane proteins. Lipidic cubic phase (LCP) crystallization is a technique to crystallize the membrane proteins in lipid environment and one of the effective approaches for the membrane protein crystallization. In this article, we describe the overview of crystallization of the membrane proteins in LCP, including the basic principles and procedures of LCP crystallization.

著者

山本 昭二

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.49, no.1, pp.6-11, 2007-02-28 (Released:2010-09-30)

参考文献数

14

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Recently a software package for the structure analysis of quasicrystals has been released, giving a better environment for determining guasicrystal structures. Therefore we can analyze their structures if we know data collection and indexing methods and a theory of structure analysis. At this occasion, their structure analysis and its recent development have shortly been reviewed.

著者

平田 秋彦 陳 明偉

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.53, no.5, pp.326-331, 2011-10-31 (Released:2011-11-20)

参考文献数

24

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Local structural order in a metallic glass was investigated by Angstrom beam electron diffraction using an aberration corrected scanning transmission electron microscope. The coherent electron probe with a diameter of 0.3 - 0.4 nm was successfully obtained by using Ronchigram method. The fine electron probe enables us to pick up Angstrom-scale local structure information which cannot be obtained by conventional diffraction methods and thereby provide a direct evidence of short- to medium-range order in metallic glasses with the help of ab-initio molecular dynamics simulation.

著者

永嶌 真理子

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.54, no.5, pp.255-262, 2012-10-31 (Released:2012-11-06)

参考文献数

40

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Epidote-group minerals are important rock-forming minerals and play a role as a reservoir of transition metal elements, strontium, rare-earth elements and water. They are formed under a variety of geological conditions. Both natural epidotes with complex chemical compositions and synthetic ones with idealized compositions have been investigated to understand their chemico-crystallographical features. In this paper, recent studies on synthetic and natural monoclinic epidotes are reviewed in terms of distributions of cations in coordination polyhedra and structural variations due to cation substitutions. New circumstances such as ‘ghost’ difference Fourier peak as an index of low-crystallinity epidotes and OH-free structure (oxyallanite) are introduced, and subjects for the future studies are proposed.

著者

中津 亨

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.52, no.1, pp.81-88, 2010-02-28 (Released:2011-02-25)

参考文献数

16

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Firefly emits visible yellow-green light. The bioluminescence reaction is carried out by the enzyme luciferase. The bioluminescence of luciferase is widely used as an excellent tool for monitoring gene expression, the measurement of the amount of ATP and in vivo imaging. Recently a study of the cancer metastasis is carried out by in vivo luminescence imaging system, because luminescence imaging is less toxic and more useful for long-term assay than fluorescence imaging by GFP. However the luminescence is much dimmer than fluorescence. Then bioluminescence imaging in living organisms demands the high efficient luciferase which emits near infrared lights or enhances the emission intensity. Here I introduce an idea for creating the high efficient luciferase based on the crystal structure.

著者

末永 和知

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.44, no.4, pp.234-239, 2002-08-31 (Released:2010-09-30)

参考文献数

8

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Electron microscopy and spectroscopy with the single-atom sensitivity enables us to obtain a direct image of the intra-molecular structure and chemical identification of individual metallofullerenes encapsulated inside single-walled carbon nanotubes, so-called peapods. By a comparison of high resolution images with a simulation to extract the relative atom positions for encaged metal atom in each molecule, distribution of molecular orientation and its interaction between adjacent molecules in metallofullerene-peapods have been statistically analyzed. Moreover the techniques described here demonstrates the possibilities to observe individual chemical reaction inside carbon nanotubes.

著者

栗栖 源嗣

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.65, no.1, pp.1, 2023-02-28 (Released:2023-03-08)

著者

千田 美紀 吾郷 日出夫 藤間 祥子

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.65, no.1, pp.2, 2023-02-28 (Released:2023-03-08)

著者

木村 正雄

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.55, no.4, pp.237, 2013-08-31 (Released:2013-08-31)

参考文献数

2

著者

和田 智志

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.54, no.2, pp.81-87, 2012-04-30 (Released:2012-05-15)

参考文献数

19

被引用文献数

1 1

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To develop high performance piezoelectric materials, a new method called at “nanodomain engineering” was proposed and investigated in this study. The nanodomain engineering means a method, which can produce high density nanodomain configurations by control of chemical composition, i.e., to develop an intermediate state between relaxor ferroelectrics and normal ferroelectrics. To confirm the concept, ternary system ceramics of BaTiO3-Bi(Mg1/2Ti1/2)O3-BiFeO3(BT-BMT-BF) was prepared and characterized. As the results, a formation of nanodomain configurations was confirmed by a transmission electron microscopy. Moreover, for the ceramics with the nanodomain configurations, high apparent piezoelectric constants over 500 pC/N was clearly obtained, which suggested that the concept of “nanodomain engineering” might work good.

著者

山本 孟 坂倉 輝俊 木村 宏之

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.64, no.4, pp.261-262, 2022-12-15 (Released:2022-12-17)

参考文献数

7

著者

青木 裕之

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.64, no.4, pp.255-256, 2022-12-15 (Released:2022-12-17)

参考文献数

3

著者

大藤 弘明

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.53, no.1, pp.46-51, 2011-02-28 (Released:2011-04-01)

参考文献数

19

被引用文献数

1

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The 3D packing structures of the microcrystals in framboidal pyrite have been studied through morphological examinations and crystallographic orientation analysis to understand the self-organization process. The structures are divided into (i) face-centered cubic, (ii) icosahedral and (iii) random packings. The detailed crystallography of pyrite framboids is characterized by high-angle (∼90°) misorientations shown by about a half of the microcrystals in a framboid. This means that the crystallographic orientation of microcrystals is not uniform even in highly ordered framboids, suggesting that their self-organization process is not crystallographically controlled, but occurs by the physical rotation of individual microcrystals.

著者

ネスポロ マッシモ

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.80-87, 2018-05-31 (Released:2018-06-02)

参考文献数

12

被引用文献数

1

著者

ネスポロ マッシモ

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.61, no.2, pp.82-94, 2019-05-31 (Released:2019-06-05)

参考文献数

10

著者

志村 玲子

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.64, no.2, pp.111-112, 2022-05-31 (Released:2022-06-01)

参考文献数

9