Newsletter

search results

results of search on CRYSTALLOGRAPHY JOURNALS ONLINE

33 citations found for Nagao,

Search for Nagao, in the World Directory of Crystallographers

Select bibliographic records for downloading using the checkboxes or select all button

Results 1 to 20, sorted by name:


Download citation
Download citation


Download citation
Download citation

link to html
Determination of an orthorhombic crystal structure in a solid phase of smectogenic compound 7OS5 (4-n-pentyl­phenyl-4′-n-heptyl­oxythio­benzoate) is reported. Polymorphism in the solid and liquid crystalline phases is investigated by complementary methods.

Download citation
Acta Cryst. (2008). A64, C501-C502
Download citation


Download citation
Acta Cryst. (1996). A52, C456
Download citation


Download citation
Download citation

link to html
The bacterial cell-division protein FtsA from methicillin-resistant S. aureus was crystallized and X-ray diffraction data were collected to a resolution of 2.3 Å.


Download citation
Acta Cryst. (2008). A64, C473
Download citation


Download citation
Download citation

link to html
A scorpion venom peptide from L. australasiae was crystallized in space group C2 and an S-SAD data set was collected to 1.9 Å resolution.

Download citation
Acta Cryst. (2008). A64, C339
Download citation


Download citation
Download citation

link to html
A novel ampholyte buffer suitable for crystallization using the ProTeam FFE apparatus has been developed. This buffer is able to generate pH gradients owing to the use of low-molecular-weight electrolytes.

Download citation
Download citation

link to html
The radial integrals, <jL>, where L = 0, 2, 4, for several electronic configurations in the 5d electrons of transition metal atoms and ions are calculated. The resultant values are fitted to Gaussian analytical expressions with four exponential terms, and the coefficients of the expressions are tabulated.

Download citation
Download citation

link to html
The radial integrals <jL>, where L = 0, 2, 4, for several electronic configurations of the 5d electrons of rare earth elements are calculated. Gaussian analytical expressions with four exponential terms are fitted to the resultant values and the coefficients of the expressions are tabulated.

Download citation
Acta Cryst. (2008). A64, C228
Download citation


Download citation
Acta Cryst. (2014). A70, C97
Download citation

link to html
Quasicrystals possess quasiperiodicity, where the structure cannot be described simply by the repetition of unit cell like conventional crystals. This fact raises the question of how quasicrystals grow, i.e., what physical mechanism makes the growth of quasicrystals possible. While crystals can grow by copying a unit cell via local atomic interactions, nonlocal structural information seems to be required in the growth of quasicrystals. This problem has attracted much attention ever since the first discovery of a quasicrystal in 1984, and several theoretical growth models [1] have been proposed. However, no experimental studies have so far been reported, and it is still unclear whether these theoretical growth models apply to real quasicrystals. In the present study, we have conducted in-situ high-temperature electron microscopic (HRTEM: High-Resolution Transmission Electron Microscopy) observations of the growth process of decagonal quasicrystals to elucidate the growth mechanism. The growth processes of a decagonal quasicrystal of Al70.8Ni19.7Co9.5 were observed by HRTEM in the temperature range 1073-1173K. Tiling patterns with edge length of about 2nm were constructed from a series of HRTEM images. They were analysed in the framework of the projection method. Here, we followed the procedures in our previous work [2]. We have already reported the results of some observations and analyses elsewhere [3]. However, the growth processes of them were on a small scale, and the results were indefinite. Recently, we have succeeded in observing a growth process on a massive scale. In this paper, we present the results of this observation and subsequent analyses, and discuss the growth mechanism of the quasicrystal.


Download citation
Download citation

link to html
Droplet density, [phi], dependence of the water-in-oil droplet structure of microemulsion was investigated by means of small-angle neutron scattering (SANS) at room temperature in a ternary system consisting of AOT (Aerosol-OT; dioctyl sulfosuccinate sodium salt), water, and n-decane. SANS profiles from 2 different contrast samples of the bulk contrast (AOT/D2O/C10H22) and of the film contrast (AOT/D2O/C10D22) were collected. By introducing a relative form factor as the ratio of scattering functions of the bulk and film contrast samples, we evaluated the [phi] dependence of the shape and size of droplets without the influence of the structure factor, S(Q). The mean radii of droplet core and shell were constant, while the polydispersity index decreased for [phi] [less-than or equal to] [phi]* [asymptotically equal to] 0.62. The evaluated structure factors S(Q) from the bulk-contrast samples were in good agreement with those from the film contrast. From the [phi] dependence of S(Q), we confirmed that the droplet density fluctuations were dominant at low-[phi] regime and the inter-droplet correlations at high-[phi] regime. The crossover concentration of these two regimes was estimated to be about 0.25. It is demonstrated that this relative form factor method is quite useful for SANS experiments.


Download citation
Acta Cryst. (2008). A64, C553
Download citation


Download citation
Acta Cryst. (2008). A64, C510
Download citation


Download citation
Download citation

link to html
Small angle neutron scattering experiments were conducted on a temperature-induced phase transition in a ternary microemulsion composed of AOT (dioctyl sulfosuccinate sodium salt), D2 O and n-decane and the results were compared with those of pressure-induced one. Although the static features of both the temperature- and the pressure-induced phase behaviour were similar, a temperature dependence of its characteristic repeat distance at high temperature was quite different from a pressure dependence of that at high pressure. Neutron spin echo experiments were also performed on both the phase transitions. The dynamics of the high temperature phase was different from that of the high pressure phase. These results indicated that the effect of pressure on the structural formation was different from that of temperature.

Follow IUCr Journals
Sign up for e-alerts
Follow IUCr on Twitter
Follow us on facebook
Sign up for RSS feeds