Search Results - (Author, Cooperation:K. Suenaga)

2016-01-23

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

2015-08-01

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

2015-08-08

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

1089-7550

AIP Digital Archive

Physics

Analysis of the Fe L23 edge fine structures in electron energy loss spectra is performed with nanometer-scale spatial resolution across the diffuse interfaces in FeGe multilayers, in which an interphase (with Ge penetration into Fe layers) has been found to be nonmagnetic. Results are correlated to the chemical composition of Ge and Fe, which is obtained simultaneously by mapping the relative weight of the Fe and Ge L23 signals, in order to investigate significant differences in the Fe L23 edge fine structures of magnetized iron and of demagnetized iron due to Ge penetration. As a function of position across the multilayer we find that the L3 peak width and the relative energy interval between the L2 and L3 white lines fluctuate in concert with the Ge concentration. Furthermore, if the total weight of the white lines does not seem to change significantly, we identify an increase in the white line ratio at the interface between Ge and Fe. These results are connected to the detailed changes, at the nanometer level, of electron properties such as d-band occupation and spin pairing. © 1996 American Institute of Physics.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

Local modifications to the electronic structure during the bending deformation of carbon nanotubes are probed by in situ electron energy-loss spectroscopy. Reversible changes in the carbon K(1s) absorption near-edge fine structures are detected at the inner bending side for a multiwalled carbon nanotube and attributed to the curvature-induced electronic structure alteration of the graphite layers. More intensive changes in the carbon K edge across an abrupt kink of a bundle of single-walled carbon nanotubes are observed over a region of 4–5 nm around the kink. These results clearly demonstrate the unique deformation behavior of the carbon nanotube, namely, a high elastic deformability and variable electronic properties associated with bending. © 2001 American Institute of Physics.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

Exotic nanocable with coiled structure has been found in soot obtained by a reactive laser ablation as a byproduct of the formerly reported coaxial nanocables [Y. Zhang, K. Suenaga, C. Colliex, and S. Iijima, Science 281, 973 (1998)]. Electron energy-loss spectroscopic imaging has revealed the coaxial structure made of amorphous boron and silicon dioxide with amorphous carbon sheath. We infer that the coiled structure is attributed to a difference in the growth rate between amorphous boron and silicon dioxide that are found to comprise eccentric coaxial nanocable. © 2000 American Institute of Physics.

Electronic Resource

1439-0523

Blackwell Publishing Journal Backfiles 1879-2005

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Variation was investigated in 110 doubled haploid (DH) lines of wheat derived from wheat × maize crosses. Field observation revealed visible variations in 15 DH2 lines such as extreme dwarfism, low seed fertility, alteration of spike type and stripes. Six agronomic traits, i.e., heading date, spike number/ plant, culm length, spike length, seed fertility and grain weight were statistically analyzed in the DH2 and DH3 generations. Out of the 88 DH2 lines/DH3 groups, 26 %/64 % showed significant differences from the parental variety in the means of one or more traits. Ranges of the DH3 lines were larger than those of the DH2 lines, except for spike number/plant. Furthermore, analyses of variance within and between DH lines showed the presence of heterogeneity/heterozygosity in the DH2 lines/plants. These results indicated the occurrence of gametoclonal variation in the DH lines. It is considered that most of the variations detected were due to the colchicine treatment rather than to the 2,4-D treatment or in vitro culture.

Electronic Resource

1365-2842

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

summary The relationship between the size of the denture foundation area and the resorption of the alveolar ridge was investigated in 55 edentulous subjects. The denture foundation area was recorded using a modelling compound impression technique with border moulding. Both sides of each edentulous mandible were examined separately, making a total of 110 experimental sides in the study. On a stone cast made from each impression, the size of the superficial denture foundation area and of the projected denture foundation area on the tentative plane of occlusion of each anatomical zone were measured. The vertical height of the alveolar ridge at the lateral incisor and first molar region was also evaluated. The size of the superficial denture foundation area in the antero-lingual and postero-lingual zones showed no significant correlation with the degree of alveolar ridge resorption. The size of the projected denture foundation area on the tentative plane of occlusion in the anterior section showed negative significant correlation with the degree of alveolar ridge resorption. The size of the projected denture foundation area on the tentative plane of occlusion in the posterior section showed no significant correlation with the degree of alveolar ridge resorption.

Electronic Resource

0006-291X

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Biology

Chemistry and Pharmacology

Physics

Electronic Resource

0921-4526

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Physics

Electronic Resource

0921-4526

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Physics

Electronic Resource

0921-4534

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Physics

Electronic Resource

0022-0248

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Geosciences

Physics

Electronic Resource

0378-4347

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Electronic Resource

0304-8853

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Physics

Electronic Resource

1434-6036

PACS. 61.14.Lj Convergent-beam electron diffraction, selected-area electron diffraction, nanodiffraction – 61.46.+w Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals – 81.07.De Nanotubes

Springer Online Journal Archives 1860-2000

Physics

Abstract: We present a general and systematic method for determining the chiral indices of carbon nanotubes. This method relies on the semi-quantitative analysis of experimental selected area diffraction pattern intensities, together with extensive comparison with kinematic theory. We show how to retrieve the chiral indices of single walled or multiwalled carbon nanotubes, even when their radii are large (up to approximately 40 Å). All theoretical and experimental sources of errors are discussed. By discussing the experimental case of a double-walled carbon nanotube, we show how it is possible to determine the chiral indices of each of its constituant tubes independently, by analyzing parts of the diffraction pattern where the contributions of these tubes do not interfere. Using the parts where all the contributions do interfere, we successfully crosschecked independently the preceding determination.

Electronic Resource

1437-1596

Genetic polymorphism ; Inter-alpha-trypsin inhibitor ; Japanese population ; Paternity tests ; Genetischer Polymorphismus ; Inter-Alpha-Trypsin-Inhibitor ; Japanische Bevölkerung ; Vaterschaftsanalysen

Springer Online Journal Archives 1860-2000

Medicine

Law

Zusammenfassung Der genetische Polymorphismus des menschlichen Inter-Alpha-Trypsin-Inhibitors (ITI) wurde mit Hilfe der isoelektrischen Fokussierung an Sialidase-behandelten Seren untersucht. Der pH-Bereich war von 3,5 bis 9,5, an die Elektrophorese schloß sich ein passiver Blot an mit anschließendem Enzym-ImmunoEssay. Bei 400 Blutspendern aus West-Japan wurden 8 vereinfachte Bandenmuster beobachtet, von denen 6 durch die bereits früher beschriebenen polymorphen Allele ITI*1, ITI*2 und ITI*3 erklärt werden konnten. Die anderen Phänotypen waren Produkte eines neuen und seltenen 4. Allels, welches als ITI*4 bezeichnet wurde und dessen Expression ebenfalls mit der Annahme eines autosomalen kodominanten Erbganges konsistent ist. Die Frequenz dieser Allele war 0,440, 0,526, 0,030 und 0,004. Die theoretische Ausschließungschance für Putativväter in Vaterschaftsfällen wurde mit 0,228 errechnet. Das ITI-System ist ein nützlicher genetischer Marker für die forensische Hämogenetik in der japanischen und europäischen Bevölkerung.

Summary The genetic polymorphism of human interalpha-trypsin inhibitor (ITI) has been investigated in sialidase-treated samples by isoelectric focusing on polyarcrylamide gels with a pH range 3.5–9.5 followed by passive blotting with enzyme immunoassay. In 400 blood donors from western Japan, 8 simplified band patterns were observed, 6 of which could be explained by the previously described 3 polymorphic alleles, ITI*1, ITI*2, and ITI*3. The others were products of a new and rare fourth allele designated ITI*4, whose expression is also consistent with autosomal codominant inheritance. The frequency of these alleles was 0.440, 0.526, 0.030 and 0.004, respectively. The theoretical exclusion rate for putative fathers in paternity cases was calculated to be 0.228. The ITI system is a useful genetic marker for forensic hemogenetics in Japanese and in Europeans.

Electronic Resource

1432-0630

PACS: 81.05.Yp; 82.80.Pv; 85.40.Ux

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Physics

2 bonds attests for the presence of ordered BN domains and of carbon domains; (ii) the elemental profiles show that BN layers and carbon layers are immiscible with a radial organisation into two to five domains; and (iii) the sets of layers at free surfaces – including the inner surfaces of tubes – are always made of carbon. The origin of this chemical organisation, which is most likely obtained during the growth, is discussed. For the hafnium-boride metallic particles coated by C/BN envelopes, a model based on the solidification from the outside to the inside of isolated liquid-like droplets is proposed: the carbon phase solidifies first according to theoretical phase diagrams, and forms the outer shells. For the tubes, a directional eutectic solidification process is shown to account for the observed C/BN/C sequence, in a vapour–liquid–solid scheme, with an hafnium-rich liquid-like particle at the tip of the tube.

Electronic Resource

0040-4039

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Electronic Resource

0040-6031

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Electronic Resource