29 Result(s)

Article

Density Variation of the Frustrated Ferromagnetism in 2D Solid ³He

We measured heat capacities of the second layer incommensurate (IC) solid ³He adsorbed on graphite preplated with monolayer ⁴He (³He/⁴He/gr) in a wide temperature range (0.3 ≤T≤ 80 mK). From the high temperature ...

D. Sato, S. Takayoshi, K. Obata, T. Matsui… in Journal of Low Temperature Physics (2010)

Article

Evidence for a Self-bound Liquid State and the Commensurate–Incommensurate Coexistence in 2D ³He on Graphite

We made heat-capacity measurements of two dimensional (2D) ³He adsorbed on graphite preplated with monolayer ⁴He in a wide temperature range (0.1≤T≤80 mK) at densities higher than that for the 4/7 phase (=6.8 nm^−...

D. Sato, D. Tsuji, S. Takayoshi, K. Obata, T. Matsui… in Journal of Low Temperature Physics (2010)

Article

Cerebellar classics I

Mario-Ubaldo Manto, Duane E. Haines, M. Ito, M. Yoshida, K. Obata… in The Cerebellum (2007)

Article

Fabrication of microchip based on UV transparent polymer for DNA electrophoresis by F₂ laser ablation

A microchip for DNA electrophoresis made of a new UV transparent polymer material (CYTOP) whose absorption edge is much shorter than 190 nm has been fabricated by F₂ laser ablation. F₂ laser ablation achieves hig...

K. Obata, K. Sugioka, N. Shimazawa, K. Midorikawa in Applied Physics A (2006)

Article

Deep etching of epitaxial gallium nitride film by multiwavelength excitation process using F₂ and KrF excimer lasers

The deep etching of GaN(0001) thin films epitaxially grown on Al₂O₃(0001) has been investigated by laser ablation using F₂ and KrF excimer lasers. The simultaneous irradiation with F₂ and KrF excimer lasers marke...

K. Obata, K. Sugioka, K. Midorikawa, T. Inamura, H. Takai in Applied Physics A (2006)

Article

Volatility of tellurium and various fission products in heated nitric acid solutions

The volatility of tellurium and some other fission products was radiochemically studied in heated nitric acid solutions. As tracers ¹²¹Te produced by bremsstrahlung of an electron LINAC and other fission products...

T. Fujii, K. Obata, T. Kubota, M. Kamiya… in Journal of Radioanalytical and Nuclear Che… (2005)

Article

Volatility of tellurium and various fission products in heated nitric acid solutions

The volatility of tellurium and some other fission products was radiochemically studied in heated nitric acid solutions. As tracers ¹²¹Te produced by bremsstrahlung of an electron LINAC and other fission products...

T. Fujii, K. Obata, T. Kubota, M. Kamiya… in Journal of Radioanalytical and Nuclear Che… (2004)

Article

NASICON devices attached with Li₂CO₃-BaCO₃ auxiliary phase for CO₂ sensing under ambient conditions

NASICON (Na₃Zr₂Si₂PO₁₂)—based electrochemical devices, constructed in a gas-separation type or planar type, were attached with a Li₂CO₃-BaCO₃ (1:2 in molar ratio) auxiliary phase to investigate their CO₂ sensing ...

K. Obata, K. Shimanoe, N. Miura, N. Yamazoe in Journal of Materials Science (2003)

Article

Hybrid laser processing for microfabrication of glass

Hybrid laser processing for the precision microfabrication of glass materials, in which the interaction of a conventional pulsed laser beam and a medium on the material surface leads to effective ablation and ...

K. Sugioka, K. Obata, M.H. Hong, D.J. Wu, L.L. Wong, Y.F. Lu… in Applied Physics A (2003)

Chapter

Difference in Wear Patterns of Diamond Cutting Tool Depending on Work Materials

For profound understanding of wear mechanisms in diamond machining, thermodynamics analyses and an erosion test are carried out. The results show that there are three different mechanisms. First one is graphit...

H. Tanaka, S. Shimada, N. Ikawa, M. Higuchi… in Initiatives of Precision Engineering at th… (2002)

Article

Influence of laser fluence and irradiation timing of F2 laser on ablation properties of fused silica in F2-KrF excimer laser multi-wavelength excitation process

A collinear irradiation system of F₂ and KrF excimer lasers for high-quality and high-efficiency ablation of hard materials by the F₂ and KrF excimer lasers’ multi-wavelength excitation process has been developed...

K. Obata, K. Sugioka, T. Akane, N. Aoki, K. Toyoda, K. Midorikawa in Applied Physics A (2001)

Article

TiN growth on Si by hybrid radical beam PLD

High-quality (good crystallinity and stoichiometry) titanium nitride (TiN) thin films were grown on Si(100) substrates by pulsed laser deposition (PLD) using a high-purity titanium target (99.99%) and nitroge...

K. Obata, K. Sugioka, K. Toyoda, H. Takai, K. Midorikawa in Applied Physics A (1999)

Article

Prenatally detected cystic neuroblastoma

A case of adrenal cystic neuroblastoma (NB) detected by prenatal ultrasonography (US) is presented. The suprarenal mass initially showed pure cystic features on a variety of imaging studies such as US, comput...

I. Yamagiwa, K. Obata, H. Saito in Pediatric Surgery International (1998)

Article

Roles of Surface Termination in Photoluminescence Mechanisms of Porous Si

The relationship between the oxidation states and PL properties and the effects of H/O termination exchange on the PL properties of PS have been investigated using synchrotron radiation photoemission spectrosc...

Y. Suda, K. Obata, A. Kumagai, N. Koshida in MRS Online Proceedings Library (1996)

Article

Sorption Behavior of Uranium(VI) on a Biotite Mineral

Biotite has the most important role for the sorption of radionuclides in granitic rocks. Experiments on the sorption of uranium (VI) on biotite were conducted to understand the fundamental controls on uranium ...

K. Idemitsu, K. Obata, H. Furuya, Y. Inagaki in MRS Online Proceedings Library (1994)

Article

Detection of stromelysin in synovial fluid and serum from patients with rheumatoid arthritis and osteoarthritis

Stromelysin levels were measured using a one-step sandwich immunoassay in synovial fluid (SF) obtained from 31 patients with rheumatoid arthritis (RA) (31 samples) and 13 patients with osteoarthritis (OA) (13 ...

S. Sasaki, H. Iwata, N. Ishiguro, K. Obata, T. Miura in Clinical Rheumatology (1994)

Article

Immunohistological study on brains of Alzheimer's disease using antibodies to fetal antigens, C-series gangliosides and microtubule-associated protein 5

An immunohistological study of Alzheimer's brains was performed using antibodies to C-series gangliosides and microtubule-associated protein 5 (MAP5), and their staining patterns were compared with those of an...

H. Takahashi, K. Hirokawa, S. Ando, K. Obata in Acta Neuropathologica (1991)