Search Results - (Author, Cooperation:T. Hasegawa)

2018-01-31

The American Society for Microbiology (ASM)

0022-538X

1098-5514

Medicine

2018-07-10

The American Association of Immunologists (AAI)

0022-1767

1550-6606

Medicine

2018-11-07

Institute of Physics Publishing (IOP)

1748-0221

Physics

2011-07-15

Nature Publishing Group (NPG)

0028-0836

1476-4687

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

Anisotropy ; *Crystallization ; Electronics/*instrumentation/*methods ; Plastics/chemistry ; Printing/*methods ; *Semiconductors ; Solvents ; Synchrotrons ; Thiophenes/chemistry ; Transistors, Electronic ; X-Ray Diffraction

2014-05-09

Nature Publishing Group (NPG)

0028-0836

1476-4687

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

Air/analysis ; Atmosphere/chemistry ; Australia ; Breeding ; Carbon Dioxide/analysis/*pharmacology ; Crops, Agricultural/*chemistry/*drug effects/metabolism ; Diet ; Edible Grain/chemistry/drug effects/metabolism ; Fabaceae/chemistry/drug effects/metabolism ; Global Health/trends ; Humans ; Iron/analysis/deficiency/metabolism ; Japan ; *Nutritional Status ; Nutritive Value/*drug effects ; Photosynthesis/drug effects ; Phytic Acid/analysis/metabolism ; Public Health/*trends ; United States ; Zinc/analysis/deficiency/metabolism

2012-06-23

Nature Publishing Group (NPG)

0028-0836

1476-4687

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

Animals ; Dependovirus/genetics ; Green Fluorescent Proteins/metabolism ; Hand/*physiology ; Macaca ; Metalloendopeptidases/metabolism ; Motor Cortex/physiology ; Motor Neurons/*physiology ; *Neurosciences ; Synaptic Transmission/genetics/physiology ; Tetanus Toxin/metabolism

2018-05-07

BMJ Publishing

2044-6055

Medicine

Clinical trials (epidemiology), Open access, Neurology

2018-02-22

Wiley-Blackwell

0148-0227

Geosciences

Physics

1089-7550

AIP Digital Archive

Physics

Extended x-ray absorption fine structure (EXAFS), Rutherford-backscattering ion channeling, and particle induced x-ray emission channeling (PIXE/C) measurements have been performed in order to investigate compensation centers in Cl doped ZnSeTe. The EXAFS results from Cl doped ZnSeTe suggest that almost all Cl atoms are incorporated into substitutional Se lattice sites, which seems to indicate that Cl atoms themselves are not responsible for the compensation centers. The PIXE/C angular profiles were measured across the 〈100〉, 〈110〉, and 〈111〉 axes for undoped ZnSeTe. Comparing the angular profiles for Zn Kα, Se Kα, and Te Lα x-ray yields, it was found that some portion of the Te atoms (∼1020 cm−3) are located at tetrahedral interstitial sites. From these results, the difficulty of realizing n-type ZnSeTe is considered to be due to the existence of the interstitial Te atoms which act as acceptors. © 1999 American Institute of Physics.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

Third-order harmonic generation has been measured on highly oriented polydiacetylene (PDA) films prepared by the vacuum deposition method. Experimental values of the third-order electric susceptibility χ(3) measured for pumping laser polarized parallel to the polymer chain show a sharp three-photon resonance to the 1Bu exciton in PDA. Potential usefulness of these highly oriented PDA evaporated films in nonlinear optical applications is suggested.

Electronic Resource

1089-7550

AIP Digital Archive

Physics

Superconducting thin films of (La1−xSrx)yCuO4−δ have been prepared by sputtering with careful control of such preparation parameters as target composition, total pressure and composition of gases in the reactor, substrate material and temperature, and annealing conditions. In accordance with the bulk target materials, the superconducting films show K2NiF4-type x-ray diffraction patterns, although this crystal structure was not the sole requisite for the superconductivity of the films. The films prepared thus far have a superconducting transition onset of about 36 K and turn out to be fully superconducting at temperatures below 10 K.

Electronic Resource

1468-2494

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Three-dimensional structural analyses of human hair fibers and comparison of the different fibers were tried by using the Ultra-high Voltage Electron Microscope (UHVEM). The analysis condition, sample preparation, and a machine state were adjusted to the suitable condition for tilting observation of from –70° to +70°, at 2° intervals. The tomography of hair fiber was successfully reconstructed from the different angle pictures with IMODE software in a computer. By using UHVEM, the various human hair fibers from Japanese and Caucasians were investigated and discussed about their structures.

Electronic Resource

1468-2494

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Transparency of the skin is an important keyword that is frequently used in questionnaires related to the female skin condition and skin consciousness, as well as an index for ‘before and after’ comparisons of the effect of cosmetics. However, the concept of ‘transparency’ has not been concretely defined. In the present study, we investigated the importance of ‘transparent skin’ and the relationship between transparency and other expressions for skin condition comparing the young with middle-aged and elderly women. Furthermore, we also analyzed the correlation between the subjective assessment score of transparency of panels made by evaluators and the skin physiological parameters of those panels, and compared the difference of their relationship when the young and middle-aged and elderly women were employed as evaluators. Regarding the consciousness of the young women, the importance of ‘transparent skin’ was ranked in the top position while ‘skin roughness’ was the chief worry of the middle-aged and elderly women. On the other hand, both age groups indicated that transparent skin is a complex concept composed of skin texture, color, and moisture. Analysis of the relationship between the subjective assessment and the skin physiological parameters showed that the uneven dispersion of b in the skin color (standard deviation), the water content of stratum corneum, and the skin surface configuration (depth of furrows, amount of furrows) closely correlated with the judgment of skin transparency in the young group, in contrast to the uneven dispersion of L and a in the skin color (standard deviation) in the middle-aged and elderly women. These results suggest that there may be no differences between the different age groups in the linguistic concept of transparency, while there may be differences in the physiological characteristics of skin that are utilized in making the judgment of transparency.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

In the case of Bi-2212/Ag composite tapes, the partial-melting technique is useful to obtain a highly textured microstructure. The liquid phase plays an important role during this process. In this letter, we studied the phase transition of oxide phases in the Bi-2212/Ag composite tapes during partial melting and solidification by using the high-temperature x-ray diffraction technique. In the partially molten state, the liquid phase coexists with various kinds of (Ca,Sr)-Cu oxides whose Cu content decreases with increasing temperature. The Bi-2212 phase forms directly from the coexistent state of the liquid phase and the (Ca,Sr)2CuO3 compound. c-axis alignment of Bi-2212 phase starts subsequently to the beginning of precipitation. Bi-2212 phase decomposes and the Bi-2201 phase appears below 800 °C. At lower temperature, the Bi-2201 phase is more stable than Bi-2212 phase and can easily form in the super-cooled liquid phase.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

Third-harmonic generation measurements have been made for the first time on oriented films of halogen-bridged mixed-valence platinum complexes for the pump wavelength region from 0.6 to 1.0 μm. The ||χ(3)(−3ω;ω,ω,ω)|| spectra obtained by the Maker's fringe method show a distinct peak at about 1.8 eV with the peak value of about 4×10−11 esu. From comparison with the electroabsorption data, this peak has been identified with the two-photon resonance peak with the forbidden exciton in the Pt-halogen chains. One-dimensional exciton states in this compound take an important role in the third-order optical nonlinearity, similar to the case in conjugated polymers.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

We have performed low-temperature scanning Hall probe microscopy on a ferromagnetic semiconductor (Ga0.957Mn0.043)As. The observed magnetic domain structure is a stripe-shaped pattern as has been observed in conventional nonsemiconductor ferromagnetic materials, and the measured magnetic field from the sample surface was small, reflecting the weak magnetization of (Ga, Mn)As. The domain width increased and the measured magnetic field decreased with raising temperature, which are consistent with calculated results, in which the exchange interaction between Mn spins deduced from the Curie temperature is assumed. © 2000 American Institute of Physics.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

The anisotropic magnetic domain structure of a layered manganite La1.4Sr1.6Mn2O7 has been analyzed quantitatively. The evaluated dimensions of the domain indicate the low dimensionality and reproduce spontaneous formation of the bubble domain taking stability of the bubble domain into account. The ferromagnetic regions observed below the Neel temperature might be responsible for the limited tunneling magnetoresistance ratio reported in this compound. © 2001 American Institute of Physics.

Electronic Resource

1365-2559

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Electronic Resource

1365-2842

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

summary  The bonding efficacy of four one-bottle adhesives (OptiBond Solo Plus, Gluma Comfort Bond, One Step and Prime & Bond NT) and a multi-step adhesive (Clearfil Photo Bond) as a control was evaluated. The dentine cavity wall was conditioned with phosphoric acid or ethylenediaminetetraacetic acid (EDTA) and the marginal integrity was estimated by measuring the wall-to-wall contraction gap width between the composite and the dentine cavity surface. In the positive control group, the adhesive was applied following glyceryl methacrylate (GM) priming. The analyses were performed by Kruskal–Wallis and Mann–Whitney U-tests. One-bottle adhesives were clearly inferior to the multi-step bonding system in marginal integrity when dentine was conditioned with EDTA. The present findings also suggested that the marginal sealing ability of ethanol-based one-bottle systems was better than acetone-based one-bottle systems when dentine surfaces were conditioned with EDTA. Nevertheless, further investigations are needed on the function of fillers in one-bottle adhesives for the prevention of contraction gaps.

Electronic Resource

1365-2559

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Electronic Resource