K. Ota

Publication List Details

Period

1987 - 2008

Number

38

Co-Authors

Comparative study of macroscopic quantum tunneling in Bi_2Sr_2CaCu_2O_y intrinsic Josephson junctions with different device structures (2008)

Ota, K., Hamada, K., Takemura, R., Ohmaki, M., Machi, T., Tanabe, K., ...

We investigated macroscopic quantum tunneling (MQT) of Bi$_2$Sr$_2$CaCu$_2$O$_y$ intrinsic Josephson junctions (IJJs) with two device structures. One is a nanometer-thick small mesa structure with...

Complex microwave conductivity of Na-DNA powders (2006)

Kitano, H., Ota, K., Maeda, A.

We report the complex microwave conductivity, $\sigma=\sigma_1-i\sigma_2$, of Na-DNA powders, which was measured from 80 K to 300 K by using a microwave cavity perturbation technique. We found that...

Planar triangulations which quadrangulate other surfaces (2004)

Nakamoto, A., Negami, S., Ota, K., Siran, J.

We shall show that for any closed surface F2 except the sphere, there is a triangulation on the sphere which can be embedded on F2 as a quadrangulation, and characterize those 5-connected...

Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties (2003)

Ouchi, M., Shimasaku, K., Okamura, S., Furusawa, H., Kashikawa, N., Ota, K., ...

(abridged) We investigate photometric properties of Lyman Break Galaxies (LBGs) at z=3.5-5.2 based on large samples of 2,600 LBGs detected in deep (i'~27) and wide-field (1,200 arcmin^2) images taken...

Subaru Deep Survey VI. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Clustering Properties (2003)

Ouchi, M., Shimasaku, K., Okamura, S., Furusawa, H., Kashikawa, N., Ota, K., ...

We investigate the clustering properties of 2,600 Lyman Break Galaxies (LBGs) at z=3.5-5.2 in two large blank fields, the Subaru Deep Field and the Subaru/XMM Deep Field (600arcmin^2 each). The...

Optical Spectropolarimetry of SN 2002ap: High Velocity Asymmetric Explosion (2002)

Kawabata, K. S., Jeffery, D. J., Iye, M., Ohyama, Y., Kosugi, G., Kashikawa, N., ...

We present spectropolarimetry of the Type Ic supernova SN 2002ap and give a preliminary analysis: the data were taken at two epochs, close to and one month later than the visual maximum (2002...

The colloid and radionuclide retardation experiment (CRR) at the Grimsel test site first evidences for the colloid-mediated radionuclide transport in a granitic fracture. (2001)

Möri, A., Geckeis, H., Missana, T., Guimera, J., Degueldre, C., Meyer, P., ...

8th Internat.Conf.on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere (Migration '01), Bregenz, A, September 16-21, 2001

Space- and time-resolved optical spectroscopy of plumes generated by laser ablation of NiO in a vacuum (1998)

Tanaka, Masatoshi, Fujisawa, Y., Nakajima, T., Tasaka, Y., Ota, K., Usami, S., ...

Laser ablation of NiO at 266 nm has been studied by measuring absorption spectra and emission spectra which are resolved both temporally and spatially. The spectra were measured at several points 1...

Discharge characteristics under non-uniform electric field in He, Ar and air at low pressures (1997)

Okubo, H., Yuasa, S., Ota, K., Hayakawa, N., Hikita, M.

We measured dc dischage inception voltage V_i for various electrode configurarions in He, Ar and air in vacuum range from 10^5 to 10^-1 Pa to determine discharge characteristics under space vacuum...

Anelastic Grain-Boundary Sliding in Ceramics. I. Directly Bonded Polycrystals (1996)

Ota, K., Pezzotti, G.

Internal friction of high-purity single-crystal sapphire and three polycrystalline aluminas with different grain sizes has been measured up to very high temperature at the frequency of 10 Hz. Only an...

Anelastic Grain-Boundary Sliding in Ceramics. II. Polycrystals with Glassy Boundaries (1996)

Pezzotti, G., Ota, K.

Systematic experimentation on grain-boundary sliding of ceramics with a glassy film at grain boundaries has been carried out by low-frequency internal friction technique up to ≈2200K. A model...

Anelastic Grain-Boundary Sliding in Ceramics. I. Directly Bonded Polycrystals (1996)

Ota, K., Pezzotti, G.

Internal friction of high-purity single-crystal sapphire and three polycrystalline aluminas with different grain sizes has been measured up to very high temperature at the frequency of 10 Hz. Only an...

Anelastic Grain-Boundary Sliding in Ceramics. II. Polycrystals with Glassy Boundaries (1996)

Pezzotti, G., Ota, K.

Systematic experimentation on grain-boundary sliding of ceramics with a glassy film at grain boundaries has been carried out by low-frequency internal friction technique up to ≈2200K. A model...

Anelastic Grain-Boundary Sliding in Ceramics. I. Directly Bonded Polycrystals (1996)

Ota, K., Pezzotti, G.

Internal friction of high-purity single-crystal sapphire and three polycrystalline aluminas with different grain sizes has been measured up to very high temperature at the frequency of 10 Hz. Only an...

Anelastic Grain-Boundary Sliding in Ceramics. II. Polycrystals with Glassy Boundaries (1996)

Pezzotti, G., Ota, K.

Systematic experimentation on grain-boundary sliding of ceramics with a glassy film at grain boundaries has been carried out by low-frequency internal friction technique up to ≈2200K. A model...

Maintaining low concentrations of plasma {beta}2-microglobulin through continuous slow haemofiltration (1995)

Saito, A., Takagi, T., Sugiura, K., Ono, M., Minakuchi, K., Teraoka, S., ...

As a first step in the development of a future wearable artificial kidney, we conducted three forms of treatment with continuous haemofiltration (CHF) on a group of 10 patients in an attempt to...

Functional Deterioration of the Peritoneum: Does It Occur in the Absence of Peritonitis? (1987)

Ota, K., Mineshima, M., Watanabe, N., Naganuma, S.

Peritoneal function in relation to the occurrence of peritonitis and the osmolarity of the dialysate was studied in 72 CAPD patients with a mean duration of treatment of 16.5±9.0 months (group 1)....

Serological analysis of cell surface antigens of null cell acute lymphocytic leukemia by mouse monoclonal antibodies.

Ueda, R, Tanimoto, M, Takahashi, T, Ogata, S, Nishida, K, Namikawa, R, ...

Nine antigens systems were defined. Two were related to HLA-A,B,C and to Ia-like antigens; the others could be grouped into three categories. (i) NL-22, NL-1: NL-22 antibody reacted with leukemia...

Developmental regulation, expression, and apoptotic potential of galectin-9, a beta-galactoside binding lectin.

Wada, J, Ota, K, Kumar, A, Wallner, E I, Kanwar, Y S

Galectin-9, a beta-galactoside binding lectin, has recently been isolated from murine embryonic kidney. In this study, its biological functions and expression in embryonic, newborn, and adult mice...

Evidence for regulation of NF-kappaB by poly(ADP-ribose) polymerase.

Kameoka, M, Ota, K, Tetsuka, T, Tanaka, Y, Itaya, A, Okamoto, T, ...

The DNA-binding activity of NF-kappaB in nuclear extracts of poly(ADP-ribose) polymerase (PARP)-defective mutant L1210 cell clones was markedly increased and was inversely correlated with the PARP...

Serological analysis of cell surface antigens of null cell acute lymphocytic leukemia by mouse monoclonal antibodies.

Ueda, R, Tanimoto, M, Takahashi, T, Ogata, S, Nishida, K, Namikawa, R, ...

Nine antigens systems were defined. Two were related to HLA-A,B,C and to Ia-like antigens; the others could be grouped into three categories. (i) NL-22, NL-1: NL-22 antibody reacted with leukemia...

Developmental regulation, expression, and apoptotic potential of galectin-9, a beta-galactoside binding lectin.

Wada, J, Ota, K, Kumar, A, Wallner, E I, Kanwar, Y S

Galectin-9, a beta-galactoside binding lectin, has recently been isolated from murine embryonic kidney. In this study, its biological functions and expression in embryonic, newborn, and adult mice...

Evidence for regulation of NF-kappaB by poly(ADP-ribose) polymerase.

Kameoka, M, Ota, K, Tetsuka, T, Tanaka, Y, Itaya, A, Okamoto, T, ...

The DNA-binding activity of NF-kappaB in nuclear extracts of poly(ADP-ribose) polymerase (PARP)-defective mutant L1210 cell clones was markedly increased and was inversely correlated with the PARP...

Phenotyping of proliferating lymphocytes in angioimmunoblastic lymphadenopathy and related lesions by the double immunoenzymatic staining technique.

Namikawa, R., Suchi, T., Ueda, R., Itoh, G., Koike, K., Ota, K., ...

Biopsy specimens of lymph nodes with the histologic characteristics of angioimmunoblastic lymphadenopathy with dysproteinemia (AILD) were obtained from 9 cases (4 cases of AILD and 5 cases of...

Five antigens on human T cells detected by mouse monoclonal antibodies

Tsuge, I., Ueda, R., Nishida, Keiko, Namikawa, Reiko, Seto, M., Maruyama, T., ...

Five antigen systems were defined by the monoclonal antibodies (MoAb) produced against mature T cells. The antigens recognized were grouped into two categories based on the antigen distribution on T...

Midkine as a prognostic biomarker in oral squamous cell carcinoma

Ota, K, Fujimori, H, Ueda, M, Shiniriki, S, Kudo, M, Jono, H, ...

The aim of this study was to evaluate serum midkine (S-MK) concentrations as a prognostic tumour marker in oral squamous cell carcinoma (OSCC). We measured S-MK concentrations in patients with OSCC...

Treatment of adult T-cell leukaemia-lymphoma with irinotecan hydrochloride (CPT-11). CPT-11 Study Group on Hematological Malignancy.

Tsuda, H., Takatsuki, K., Ohno, R., Masaoka, T., Okada, K., Shirakawa, S., ...

A late phase II study of a new camptothecin analogue, irinotecan hydrochloride (CPT-11), was conducted to evaluate the anti-tumour effect and toxicity in patients with refractory leukaemia and...