Ohta,Y., Goto,N., Yamamizu,F., Takahashi,H.
Deep S-waves velocity measurements were planned at 2 separate sites in the Toyko area from the earthquake engineering point of view, and actually carried out down to 2 to 3 km in depth using...
Sakamaki, M., Konishi, T., Ohta, Y.
Based on the first-principles electronic structure calculations, we predict that a chromium oxide K$_2$Cr$_8$O$_{16}$ of hollandite type should be a half-metallic ferromagnet where the Fermi level...
Ab initio electronic structure calculation of hollandite vanadate K$_2$V$_8$O$_{16}$ (2008)
Sakamaki, M., Horiuchi, S., Konishi, T., Ohta, Y.
An \textit{ab initio} electronic structure calculation based on the generalized gradient approximation in the density functional theory is carried out to study the basic electronic states of...
Spin-triplet f-wave pairing due to three-site cyclic-exchange ferromagnetic interactions (2008)
Ferromagnetiam and superconductivity in a two-dimensional triangular-lattice Hubbard model are studied using the density-matrix renormalization group method. We propose a mechanism of the {\it...
Seki, K., Shirakawa, T., Ohta, Y.
Using an exact diagonalization technique on small clusters, we study spin and density excitations of the triangular-lattice $t$-$J$ model with multiple-spin exchange interactions, whereby we consider...
Weak quasistatic magnetism in the frustrated Kondo lattice Pr_2Ir_2O_7 (2008)
MacLaughlin, D. E., Ohta, Y., Machida, Y., Nakatsuji, S., Luke, G. M., Ishida, K., ...
Muon spin relaxation experiments have been performed in the pyrochlore iridate Pr_2Ir_2O_7 for temperatures in the range 0.025-250 K. Kubo-Toyabe relaxation functions are observed up to > 200 K,...
Horiuchi, S., Kudo, S., Shirakawa, T., Ohta, Y.
The variational cluster approach (VCA) based on the self-energy functional theory is applied to the two-dimensional symmetric periodic Anderson model at half filling. We calculate a variety of...
Shirakawa, T., Nishimoto, S., Ohta, Y.
We study the ground-state properties of the double-chain Hubbard model coupled with ferromagnetic exchange interaction by using the weak-coupling theory, density-matrix renormalization group...
Theoretical study of the electronic states of hollandite vanadate K$_2$V$_8$O$_{16}$ (2008)
Horiuchi, S., Shirakawa, T., Ohta, Y.
We consider electronic properties of hollandite vanadate K$_2$V$_8$O$_{16}$, a one-dimensional zigzag-chain system of $t_{2g}$ orbitals in a mixed valent state. We first calculate the Madelung energy...
Coexistence of distinct charge fluctuations in $\theta$-(BEDT-TTF)$_2$X (2008)
Nishimoto, S., Shingai, M., Ohta, Y.
Using the Lanczos exact-diagonalization and density-matrix renormalization group methods, we study the extended Hubbard model at quarter filling defined on the anisotropic triangular lattice. We...
Oxygen defects created in CeO2 irradiated with 200 MeV Au (2008)
Ohhara, K., Ishikawa, N., Sakai, S., Matsumoto, Y., Michikami, O., Ohta, Y.
In this study CeO2 films were irradiated with 200 MeV Au in order to investigate damages created by electronic energy deposition. In Raman spectra after the irradiation, a broad band appears at...
Oxygen defects created in CeO2 irradiated with 200 MeV Au (2008)
Ohhara, K., Ishikawa, N., Sakai, S., Matsumoto, Y., Michikami, O., Ohta, Y.
In this study CeO2 films were irradiated with 200 MeV Au in order to investigate damages created by electronic energy deposition. In Raman spectra after the irradiation, a broad band appears at...
H. Bhang, H. Park, J. H. Kim, Y. D. Kim, M. Youn, O. Hashimoto, ...
Through the last 7-8 years of collaboration with the SKS hypernuclear physics group at KEK, we have concentrated on the measurement of hypernuclear decays. Non-mesonic weak decay mode of hypernucleus...
Phase diagram of the one-dimensional Hubbard model with next-nearest-neighbor hopping (2007)
Nishimoto, S., Sano, K., Ohta, Y.
We study the one-dimensional Hubbard model with nearest-neighbor and next-nearest-neighbor hopping integrals by using the density-matrix renormalization group (DMRG) method and Hartree-Fock...
Quasideterminant solutions of a non-Abelian Hirota-Miwa equation (2007)
Gilson, C. R., Nimmo, J. J. C., Ohta, Y.
A non-Abelian version of the Hirota-Miwa equation is considered. In an earlier paper [Nimmo (2006) J. Phys. A: Math. Gen. \textbf{39}, 5053-5065] it was shown how solutions expressed as...
Nishimoto, S., Shirakawa, T., Ohta, Y.
The dynamical density-matrix renormalization group technique is used to calculate spin and charge excitation spectra in the one-dimensional (1D) Hubbard model at quarter filling with nearest-neighbor...
Theoretical Study on Superconductivity in Boron-Doped Diamond (2006)
Shirakawa, T., Horiuchi, S., Ohta, Y., Fukuyama, H.
We consider superconductivity in boron (B) doped diamond using a simplified model for the valence band of diamond. We treat the effects of substitutional disorder of B ions by the coherent potential...
Nanochannel-promoted polymerization of substituted acetylenes in porous coordination polymers (2006)
Ohta, Y., Nakaegawa, T., Ejima, S.
Quantum Monte Carlo and density-matrix renormalization group methods are used to study the coupled spin-pseudospin Hamiltonian in one-dimension (1D) that models the charge-ordering instability of the...
Ohta, Y., Nishimoto, S., Shirakawa, T., Yamaguchi, Y.
The density-matrix renormalization group method is used to study the ground state of the two-chain zigzag-bond Hubbard model at quarter filling. We show that, with a proper choice of the signs of...
Cloning and characterization of Xenopus beta 2-microglobulin. (2005)
Stewart, R., Ohta, Y., Minter, R. R., Gibbons, T., Horton, T. L., Ritchie, P., ...
cDNAs for Xenopus β2-microglobulin (β2m), the obligatory light chain of most vertebrate Major Histocompatibility Complex (MHC) class I molecules, were isolated and ESTs were identified. Alignment...
Construction of hypergeometric solutions to the q-Painleve equations (2005)
Kajiwara, K., Masuda, T., Noumi, M., Ohta, Y., Yamada, Y.
Hypergeometric solutions to the q-Painlevé equations are constructed by direct linearization of discrete Riccati equations. The decoupling factors are explicitly determined so that the linear...
Point configurations, Cremona transformations and the elliptic difference Painlev\'e equation (2004)
Kajiwara, K., Masuda, T., Noumi, M., Ohta, Y., Yamada, Y.
A theoretical foundation for a generalization of the elliptic difference Painlev\'e equation to higher dimensions is provided in the framework of birational Weyl group action on the space of point...
Mesonic and nonmesonic weak decay widths of medium-heavy lambda hypernuclei (2004)
Sato, Y., Ajimura, S., Aoki, K., Bhang, H., Hasegawa, T., Hashimoto, O., ...
We have measured the energy spectra of pions and protons emitted in the weak decay of 12_Lambda_C, 28_Lambda_Si, and Lambda_Fe hypernuclei produced via the (pi+, K+) reaction. The decay widths of the...
Automated Camerawork For Capturing Desktop Presentations – Camerawork Design And Evaluation (2004)
M. Ozeki, Y. Nakamura, Y. Ohta
This paper introduces a novel automated camera control method for capturing desktop presentations. For this purpose, we first discuss typical features of shots and their cameraworks that frequently...
Hypergeometric solutions to the q-Painleve equations (2004)
Kajiwara, K., Masuda, T., Noumi, M., Ohta, Y., Yamada, Y.
Hypergeometric solutions to seven q-Painlevé equations in Sakai's classification are constructed. Geometry of plane curves is used to reduce the q-Painlevé equations to the three-term recurrence...
Angle-resolved photoemission spectra of the stripe phase in the two-dimensional t-J model. (2004)
Physical Review B, 69(2004) S.100502/1-4
Physical Review B, 69(2004) S.094433/1-4
Grammaticos, B., Ramani, A., Ohta, Y.
We present a geometric description, based on the affine Weyl group E_{6}^{(1)}, of two discrete analogues of the Painlev\'e VI equation, known as the asymmetric q-P_{V} and asymmetric d-P_{IV}. This...
Ohta, Y., Nakaegawa, T., Ejima, S.
Quantum Monte Carlo (QMC) and density-matrix renormalization group (DMRG) methods are used to study the coupled spin-pseudospin Hamiltonian in one-dimension (1D) that models the charge-ordering...
ARPES spectra of the stripe phase in the 2D t-J model (2003)
The 2D t-J model with and without t' and t'' hopping-terms is studied by exact diagonalization on a 5 x 4 cluster, which realizes a hole stripe in y-direction in a dimerized singlet background. Next...
Optimal Layout Design for Agricultural Facility Using Simulated Annealing (2003)
Satake, T., Satake, O., Ohta, Y., Furuya, T.
Rosana G. Moreira, Editor-in-Chief; Texas A&M University
Optimal Layout Design for Agricultural Facility Using Simulated Annealing (2003)
Satake, T., Satake, O., Ohta, Y., Furuya, T.
Rosana G. Moreira, Editor-in-Chief; Texas A&M University
The hole-doped 2D t-J model is studied by exact diagonalization on a 5 x 4 cluster which, unlike the standard tilted square clusters, can in principle accomodate an antiphase domain wall. For hole...
Gilson, C., Hietarinta, J., Nimmo, J., Ohta, Y.
Higher order and multicomponent generalizations of the nonlinear Schrodinger equation are important in various applications, e.g., in optics. One of these equations, the integrable Sasa-Satsuma...
The space of initial conditions for linearisable mappings (2002)
Takenawa, T., Eguchi, M., Grammaticos, B., Ohta, Y., Ramani, A., Satsuma, J.
We apply the algebraic-geometric techniques developed for the study of mappings which have the singularity confinement property to mappings which are integrable through linearisation. The main...
Quantum Monte Carlo method is used to study the coupled spin-pseudospin Hamiltonian in one-dimension (1D) that models the charge-ordering instability of the anisotropic Hubbard ladder at quarter...
Amasaki, R., Shibata, Y., Ohta, Y.
We calculate the optical conductivity of the CuO double chains of PrBa$_2$Cu$_4$O$_8$ by the mean-field approximation for the coupled two-chain Hubbard model around quarter filling. We show that the...
We consider the possible charge and orbital ordering in a Hollandite compound Bi_xV_8O_{16}, which is a new one-dimensional triangular-lattice t_{2g}-orbital system. Using the strong-coupling...
Shibata, Y., Nishimoto, S., Ohta, Y.
We study the charge ordering (CO) in the one-dimensional (1D) extended Hubbard model at quarter filling where the nearest-neighbor Coulomb repulsion and dimerization in the hopping parameters are...
Linearisable Mappings and the Low-Growth Criterion (2001)
Ramani, A., Grammaticos, B., Lafortune, S., Ohta, Y.
We examine a family of discrete second-order systems which are integrable through reduction to a linear system. These systems were previously identified using the singularity confinement criterion....
Blending two discrete integrability criteria: singularity confinement and algebraic entropy (2001)
Lafortune, S., Ramani, A., Grammaticos, B., Ohta, Y., Tamizhmani, K. M.
We confront two integrability criteria for rational mappings. The first is the singularity confinement based on the requirement that every singularity, spontaneously appearing during the iteration of...
Singularity confinement and algebraic entropy: the case of the discrete Painlev\'e equations (1999)
Ohta, Y., Tamizhmani, K. M., Grammaticos, B., Ramani, A.
We examine the validity of the results obtained with the singularity confinement integrability criterion in the case of discrete Painlev\'e equations. The method used is based on the requirement of...
Nijhoff, F. W., Ramani, A., Grammaticos, B., Ohta, Y.
A new integrable nonautonomous nonlinear ordinary difference equation is presented which can be considered to be a discrete analogue of the Painleve V equation. Its derivation is based on the...
On Integrability and Chaos in Discrete Systems (1998)
Ablowitz, M. J., Ohta, Y., Trubatch, A. D.
The scalar nonlinear Schrodinger (NLS) equation and a suitable discretization are well known integrable systems which exhibit the phenomena of ``effective'' chaos. Vector generalizations of both the...
On Discretizations of the Vector Nonlinear Schrodinger Equation (1998)
Ablowitz, M. J., Ohta, Y., Trubatch, A. D.
Two discretizations of the vector nonlinear Schrodinger (NLS) equation are studied. One of these discretizations, referred to as the symmetric system, is a natural vector extension of the scalar...
A Model Study of the Low-Energy Charge Dynamics of NaV_2O_5 (1998)
An exact-diagonalization technique on small clusters is used to calculate the dynamical density correlation functions of the dimerized t-J chain and coupled anisotropic t-J ladders (trellis lattice)...
Optical Conductivity of the Trellis-Lattice t-J Model: Charge Fluctuations in NaV_2O_5 (1998)
Optical conductivity of the trellis lattice t-J model at quarter filling is calculated by an exact-diagonalization technique on small clusters, whereby the valence state of V ions of NaV_2O_5 is...
NaV_2O_5 as an Anisotropic t-J Ladder at Quarter Filling (1998)
Based on recent experimental evidences that the electronic charge degrees of freedom plays an essential role in the spin-Peierls--like phase transition of NaV$_2$O$_5$, we first make the mapping of...
Critical Dimerization Strength of the Quarter-Filled t-J Model (1998)
An exact-diagonalization technique on small clusters is used to study the ground state of the dimerized t-J model at quarter filling. The equal-time charge and spin correlations, charge and spin...
Ground-state phase diagram of the one-dimensional dimerized t-J model at quarter filling (1998)
The ground state of the one-dimensional dimerized $t$$-$$J$ model at quarter filling is studied by a Lanczos exact-diagonalization technique on small clusters. We calculate the charge gap, spin gap,...
Mulligan, MS, Warner, RL, Lowe, JB, Smith, PL, Suzuki, Y, Miyasaka, M, ...
Bogoliubov quasiparticle spectra of the effective d-wave model for cuprate superconductivity (1997)
Ohta, Y., Yamaguchi, M., Eder, R.
An exact-diagonalization technique on finite-size clusters is used to study the ground state and excitation spectra of the two-dimensional effective fermion model, a fictious model of hole...
The 1D t-J model with next-nearest neighbor hopping - breakdown of the Luttinger liquid? (1997)
We investigate the effect of a next-nearest neighbor hopping integral t' in the 1D t-J model, using Lanczos diagonalization of finite chains. Surprisingly, even moderate values of t' have a quite...
Landau mapping and Fermi liquid parameters of the 2D t-J model (1997)
Nishimoto, S., Ohta, Y., Eder, R.
We study the momentum distribution function n(k) in the 2D t-J model on small clusters by exact diagonalization. We show that n(k) can be decomposed systematically into two components with Bosonic...
Photoemission spectra of the t-J model in 1 and 2D: similarities and differences (1997)
We present an exact diagonalization study of the single particle spectral function in the 1D and 2D t-J model. By studying the scaling properties with J and t we find a simple building pattern in 1D...
Doping dependent quasiparticle band structure in cuprate superconductors (1996)
Eder, R., Ohta, Y., Sawatzky, G. A.
We present an exact diagonalization study of the single particle spectral function in the so-called t-t'-t''-J model in 2D. As a key result, we find that unlike the `pure' t-J model, hole doping...
Low energy excitations of the t-J model in 1D and 2D (1996)
Eder, R., Chen, Y. C., Lin, H. Q., Ohta, Y., Shih, C. T., Lee, T. K.
We present an exact diagonalization study of the low energy singlet and triplet states for both 1D and 2D t-J model. A scan of the parameter ratio J/t shows that for nearly all low energy states in...
Optical conductivity of strongly correlated electron systems (1996)
Eder, R., Wrobel, P., Ohta, Y.
We present an exact diagonalization study of the frequency and wave vector dependent conductivity $\sigma(q,\omega)$ in small clusters of $2D$ $t$$-$$J$ model. Unlike the related dynamical density...
From Discrete to Continuous Painlev\'e Equations: A Bilinear Approach (1996)
Ohta, Y., Ramani, A., Grammaticos, B., Tamizhmani, K. M.
We present the bilinear forms of the (continuous) Painlev\'e equations obtained from the continuous limit of the analogous expresssions for the discrete ones. The advantage of this method is that it...
Cellular Automata and Ultra-Discrete Painlev\'e Equations (1996)
Grammaticos, B., Ohta, Y., Ramani, A., Takahashi, D., Tamizhmani, K. M.
Starting from integrable cellular automata we present a novel form of Painlev\'e equations. These equations are discrete in both the independent variable and the dependent one. We show that they...
Heavy Quasiparticles in the Anderson Lattice Model (1995)
Tsutsui, K., Ohta, Y., Eder, R., Maekawa, S., Dagotto, E., Riera, J.
An exact-diagonalization technique on small clusters is used to study the dynamics of the one-dimensional symmetric Anderson lattice model. Our calculated excitation spectra reproduce key features...
Excitation Spectra of the Negative-U Hubbard Model: A Small-Cluster Study (1995)
Ohta, Y., Nakauchi, A., Eder, R., Tsutsui, K., Maekawa, S.
An exact-diagonalization technique on small clusters is used to study low-lying excitations and superconductivity in the two-dimensional negative-$U$ Hubbard model. We first calculate the...
Inverse photoemission in strongly correlated electron systems (1995)
Based on exact results for small clusters of 2D t-J model we demonstrate the existence of several distinct `channels' in its inverse photoemission (IPES) spectrum. Hole-like quasiparticles can either...
Ground state properties and dynamics of the bilayer t-J model (1995)
Eder, R., Ohta, Y., Maekawa, S.
We present an exact diagonalization study of bilayer clusters of t-J model. Our results indicate a crossover between two markedly different regimes which occurs when the ratio J_perp/J between...
Anomalous Spin and Charge Dynamics of the 2D t-J Model at low doping (1995)
Eder, R., Ohta, Y., Maekawa, S.
We present an exact diagonalization study of the dynamical spin and density correlation function of the 2D t-J model for hole doping < 25%. Both correlation functions show a remarkably regular, but...
Bilinear Structure and Exact Solutions of the Discrete Painlev\'e I Equation (1994)
Ohta, Y., Kajiwara, K., Satsuma, J.
Bilinear structure for the discrete Painlev\'e I equation is investigated. The solution on semi-infinite lattice is given in terms of the Casorati determinant of discrete Airy function. Based on this...
A detailed exact-diagonalization study is made for the doping dependence of the single-particle spectral function $A({\bf k},\omega)$ and momentum distribution function $n({\bf k})$ of the...
We present an exact diagonalization study of the dynamical spin and density correlation functions in small clusters of 2D t-J model for intermediate and low electron densities, rho
Spin dynamics of the doped t-J model (1994)
We present a new method for studying the low energy excitations in finite cluster systems and apply it to clarify the nature of the low energy spin excitations in the moderately doped t-J model. We...
Hole pockets in the t-J model (1994)
We present an exact diagonalization study of the electron momentum distribution n(k) in small clusters of t-J model for different hole concentrations and t/J. Structures in n(k) which were previously...
Spin bags in the doped t-J model (1994)
We present a nonperturbative method for deriving a quasiparticle description of the low-energy excitations in the t-J model for strongly correlated electrons. Using the exact diagonalization...
Validity of the rigid band picture for the t-J model (1994)
Eder, R., Ohta, Y., Shimozato, T.
We present an exact diagonalization study of the doping dependence of the single particle Green's function in 16, 18 and 20 site clusters of t-J model. We find evidence for rigid-band behaviour...
Bogoliubov Quasiparticle Excitations in the Two-Dimensional t-J Model (1994)
Ohta, Y., Shimozato, T., Eder, R., Maekawa, S.
Using a proposed numerical technique for calculating anomalous Green's functions characteristic of superconductivity, we show that the low-lying excitations in a wide parameter and doping region of...
AZIZ, L., ONO, K., OHTA, Y., MORITA, K., HIRAKAWA, M.
The effect of temperature on the potencies of neuromuscular blocking agents remains unclear. This study was undertaken to examine the effects of different neuromuscular blocking agents at 37 and 27...
USE OF DILTIAZEM TO CONTROL CIRCULATORY FLUCTUATIONS DURING RESECTION OF A PHAEOCHROMOCYTOMA (1988)
TOKIOKA, H., TAKAHASHI, T., KOSOGABE, Y., OHTA, Y., KOSAKA, F.
This report describes the use of diltiazem to control circulatory fluctuations during anaesthesia in five patients undergoing resection of a phaeochromocytoma. Diltiazem was administered continuously...
H. Arita, Y. C. Lin, M. Sudoh, I. Kuwahira, Y. Ohta, H. Saiki, ...
Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
Hana kai ii: a 17-day dry saturation dive at 18.6 ATA. II. Energy balance (1977)
P. Webb, V. Frattali, R. H. Dressendorfer, J. Dwyer, T. O. Moore, ...
Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
Ohta, Y, Haire, R N, Litman, R T, Fu, S M, Nelson, R P, Kratz, J, ...
X chromosome-linked agammaglobulinemia is a life-threatening disease that involves a failure in normal development of B lymphocytes and is associated with missense mutations in BTK, a gene encoding a...
Amemiya, C T, Ohta, Y, Litman, R T, Rast, J P, Haire, R N, Litman, G W
The living coelacanth Latimeria chalumnae is a relict species whose higher-level phylogenetic relationships have not been resolved clearly by traditional systematic approaches. Previous studies show...
Indirect immunofluorescence was used to determine the distribution of Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) in rat embryo fibroblast 3Y1 cells, rat C6 glioma cells, and human...
Hepatitis C virus infection is associated with the development of hepatocellular carcinoma.
Saito, I, Miyamura, T, Ohbayashi, A, Harada, H, Katayama, T, Kikuchi, S, ...
A possible causative role for the recently discovered hepatitis C virus (HCV) in the development of hepatocellular carcinoma (HCC) was investigated by assay of sera from HCC patients in Japan for...
Ohta, Y, Kijima, H, Ohkawa, T, Kashani-Sabet, M, Scanlon, K J
In this study, we have compared the efficacy of a tissue-specific promoter (tyrosinase promoter) with a viral promoter to express anti-ras ribozyme RNA in human melanoma cells. The retroviral vector...
Strong, S J, Ohta, Y, Litman, G W, Amemiya, C T
We describe a simple electroelution method for purifying large, gel-fractionated DNA molecules that alleviates the need for melting of the agarose and subsequent enzymatic agarose digestion. The...
Guo, Zj., Nakagawara, S., Sumitani, K., Ohta, Y.
To produce phytoalexin, 6-methoxymellein (6-MM) was induced in suspension cultures of carrot (Daucus carota) by buthionine sulfoximine (BSO) and CuCl2. Addition of BSO (a specific inhibitor of...
Sato, T, Harada, K, Ohta, Y, Kobayashi, Y
The Bacillus subtilis spoIVCA gene encodes a site-specific recombinase which creates a sigK gene by DNA rearrangement. We have determined the transcription initiation point of the spoIVCA gene and...
Deodorization of pig feces by actinomycetes.
Peg feces, a malodorous substance causing environmental pollution, were completely deodorized within 2 days by Streptomyces. The optimum conditions for deodorization were as follows: pH, 8.6 to 10;...
Kodama, T, Ohta, Y, Masuda, T, Ishikawa, K, Tsujimoto, H, Isahakia, M, ...
Mouse monoclonal antibodies were produced against simian immunodeficiency virus (SIV) from the African green monkey (SIVAGM). The antibodies reacted with the transmembrane protein of all five SIVAGM...
Tsujimoto, H, Cooper, R W, Kodama, T, Fukasawa, M, Miura, T, Ohta, Y, ...
Two isolates of simian retrovirus related to the human immunodeficiency virus (HIV) were obtained from apparently healthy mandrills, Papio (Mandrillus) sphinx, in western equatorial Africa. This...
Specificity of a Catabolic Pathway—a Lesson Learned from Indirect Assays
Ribbons, D. W., Ohta, Y., Higgins, I. J.
Studies with purified orcinol hydroxylase suggest that, contrary to previous conclusions, the enzymes of the orcinol pathway cannot transform analogous compounds to common metabolites. The substrate...
Complete nucleotide sequence of the E. coli N-acetylneuraminate lyase.
Ohta, Y, Watanabe, K, Kimura, A
The nucleotide sequence of the cloned DNA, 1,243 bp in length coding for N-acetylneuraminate lyase (N-acetylneuraminate pyruvate lyase; NPL) of Escherichia coli has been determined. Nucleotide...
Kimura, A, Matsunaga, E, Ohta, Y, Fujiyoshi, T, Matsuo, T, Nakamura, T, ...
The delta-globin genes of a normal Japanese and a Japanese patient with homozygous delta-thalassemia were cloned, and the nucleotide sequence of a region including the gene was determined. Comparison...
Haire, R N, Ohta, Y, Litman, R T, Amemiya, C T, Litman, G W
The complete genomic sequences of Xenopus laevis immunoglobulin heavy chain variable region (VH) genes comprising families IV-XI are reported. Using VH family-specific probes, linkage relationships...
Ohta, Y, Tanaka, M, Terada, M, Miller, O J, Bank, A, Marks, P, ...
The murine-virus-infected erythroleukemia cell system provides an opportunity to examine regulatory mechanisms controlling cytodifferentiation. A cloned cell line (DR10c3) resistant to the...
Ohta, Y, Haire, R N, Litman, R T, Fu, S M, Nelson, R P, Kratz, J, ...
X chromosome-linked agammaglobulinemia is a life-threatening disease that involves a failure in normal development of B lymphocytes and is associated with missense mutations in BTK, a gene encoding a...
Amemiya, C T, Ohta, Y, Litman, R T, Rast, J P, Haire, R N, Litman, G W
The living coelacanth Latimeria chalumnae is a relict species whose higher-level phylogenetic relationships have not been resolved clearly by traditional systematic approaches. Previous studies show...
Indirect immunofluorescence was used to determine the distribution of Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) in rat embryo fibroblast 3Y1 cells, rat C6 glioma cells, and human...
Hepatitis C virus infection is associated with the development of hepatocellular carcinoma.
Saito, I, Miyamura, T, Ohbayashi, A, Harada, H, Katayama, T, Kikuchi, S, ...
A possible causative role for the recently discovered hepatitis C virus (HCV) in the development of hepatocellular carcinoma (HCC) was investigated by assay of sera from HCC patients in Japan for...
Ohta, Y, Kijima, H, Ohkawa, T, Kashani-Sabet, M, Scanlon, K J
In this study, we have compared the efficacy of a tissue-specific promoter (tyrosinase promoter) with a viral promoter to express anti-ras ribozyme RNA in human melanoma cells. The retroviral vector...
Strong, S J, Ohta, Y, Litman, G W, Amemiya, C T
We describe a simple electroelution method for purifying large, gel-fractionated DNA molecules that alleviates the need for melting of the agarose and subsequent enzymatic agarose digestion. The...
Guo, Zj., Nakagawara, S., Sumitani, K., Ohta, Y.
To produce phytoalexin, 6-methoxymellein (6-MM) was induced in suspension cultures of carrot (Daucus carota) by buthionine sulfoximine (BSO) and CuCl2. Addition of BSO (a specific inhibitor of...
Sato, T, Harada, K, Ohta, Y, Kobayashi, Y
The Bacillus subtilis spoIVCA gene encodes a site-specific recombinase which creates a sigK gene by DNA rearrangement. We have determined the transcription initiation point of the spoIVCA gene and...
Deodorization of pig feces by actinomycetes.
Peg feces, a malodorous substance causing environmental pollution, were completely deodorized within 2 days by Streptomyces. The optimum conditions for deodorization were as follows: pH, 8.6 to 10;...
Kodama, T, Ohta, Y, Masuda, T, Ishikawa, K, Tsujimoto, H, Isahakia, M, ...
Mouse monoclonal antibodies were produced against simian immunodeficiency virus (SIV) from the African green monkey (SIVAGM). The antibodies reacted with the transmembrane protein of all five SIVAGM...
Tsujimoto, H, Cooper, R W, Kodama, T, Fukasawa, M, Miura, T, Ohta, Y, ...
Two isolates of simian retrovirus related to the human immunodeficiency virus (HIV) were obtained from apparently healthy mandrills, Papio (Mandrillus) sphinx, in western equatorial Africa. This...
Specificity of a Catabolic Pathway—a Lesson Learned from Indirect Assays
Ribbons, D. W., Ohta, Y., Higgins, I. J.
Studies with purified orcinol hydroxylase suggest that, contrary to previous conclusions, the enzymes of the orcinol pathway cannot transform analogous compounds to common metabolites. The substrate...
Complete nucleotide sequence of the E. coli N-acetylneuraminate lyase.
Ohta, Y, Watanabe, K, Kimura, A
The nucleotide sequence of the cloned DNA, 1,243 bp in length coding for N-acetylneuraminate lyase (N-acetylneuraminate pyruvate lyase; NPL) of Escherichia coli has been determined. Nucleotide...
Kimura, A, Matsunaga, E, Ohta, Y, Fujiyoshi, T, Matsuo, T, Nakamura, T, ...
The delta-globin genes of a normal Japanese and a Japanese patient with homozygous delta-thalassemia were cloned, and the nucleotide sequence of a region including the gene was determined. Comparison...
Haire, R N, Ohta, Y, Litman, R T, Amemiya, C T, Litman, G W
The complete genomic sequences of Xenopus laevis immunoglobulin heavy chain variable region (VH) genes comprising families IV-XI are reported. Using VH family-specific probes, linkage relationships...
Ohta, Y, Tanaka, M, Terada, M, Miller, O J, Bank, A, Marks, P, ...
The murine-virus-infected erythroleukemia cell system provides an opportunity to examine regulatory mechanisms controlling cytodifferentiation. A cloned cell line (DR10c3) resistant to the...
Haire, R N, Ohta, Y, Strong, S J, Litman, R T, Liu, Y, Prchal, J T, ...
Seven individuals with the diagnosis of X-linked agammaglobulinemia were analyzed for mutations in Bruton tyrosine kinase (Btk) gene at both the cDNA transcript and genomic DNA levels. In addition,...
Ohta, Y, Yamane, M, Sohda, T, Makino, H
We have shown that TAK-603, a new anti-rheumatic drug, is more effective in animal models in which cellular immunity plays a central role. Here, we studied the effect of the drug on Th1 cytokines,...
Akbar, S M, Onji, M, Inaba, K, Yamamura, K, Ohta, Y
The experiments presented here were performed to evaluate immune responsiveness of hepatitis B virus (HBV)-transgenic mice (transgenic mice), as a model of HBV-carrier state to a T-cell-dependent...
Contribution of hepatic reticuloendothelial system to glomerular IgA deposition in rat liver injury.
Ogata, I., Fujiwara, K., Nishi, T., Kuwata, S., Ohta, Y., Nosaka, K., ...
Liver damage was induced in rats by a single dose of dimethylnitrosamine or D-galactosamine. In the dimethylnitrosamine model, marked glomerular IgA deposition occurred between Days 4 and 28, with...
Orito, E, Mizokami, M, Tanaka, T, Lau, J Y, Suzuki, K, Yamauchi, M, ...
BACKGROUND/AIM: A novel fluorescent enzyme immunoassay (FEIA) for the detection and quantification of serum hepatitis C virus (HCV) core protein was developed. The aim of this study was to evaluate...
Intravascular coagulation in acute liver failure in rats and its treatment with antithrombin III.
Fujiwara, K, Ogata, I, Ohta, Y, Hirata, K, Oka, Y, Yamada, S, ...
Liver damage was induced in rats by injection of dimethylnitrosamine (DMN) or carbon tetrachloride (CCl4). Fibrin clots were observed in the hepatic sinusoids at 12 hours and soluble fibrin monomer...
Effect of recombinant interleukin 2 on hepatitis B e antigen positive chronic hepatitis.
Onji, M, Kondoh, H, Horiike, N, Yamaguchi, S, Ogawa, Y, Kumon, I, ...
Eleven patients with hepatitis B (HB) virus related chronic hepatitis were treated with recombinant interleukin 2 (rIL 2). Two hundred and fifty to 1000 units were given intravenously once daily for...
In vitro and in vivo analysis of cellular origin of cervical squamous metaplasia.
Tsutsumi, K., Sun, Q., Yasumoto, S., Kikuchi, K., Ohta, Y., Pater, A., ...
We have previously shown that cultured normal human endocervical cells (HENs) form epithelium resembling squamous metaplasia in vivo. To analyze the cellular origin of squamous metaplasia, the...
Yamaguchi, S, Onji, M, Kondoh, H, Miyaoka, H, Ohta, Y
Nine patients with chronic hepatitis type B were treated with recombinant interleukin 2 (rIL-2). Side effects were limited to low-grade fever and headache, which were transient and tolerable for the...
Ohta, Y, Fujiwara, K, Nishi, T, Oka, H
Using monoclonal antibodies and flow cytometry percentages and absolute number of lymphocyte populations and T cell subsets were enumerated in peripheral blood collected between 8:00 and 10:00 a.m....
Koyama, A, Inage, H, Kobayashi, M, Ohta, Y, Narita, M, Tojo, S, ...
Passive injection of mice with preformed immune complexes (IC) made from cationized bovine serum albumin (BSA) and anti-native BSA antibody gave immune deposits along the glomerular capillary walls...
Discordant phenotype in siblings with X-linked agammaglobulinemia.
Bykowsky, M. J., Haire, R. N., Ohta, Y., Tang, H., Sung, S. S., Veksler, E. S., ...
X-linked agammaglobulinemia (XLA) is a congenital humoral immunodeficiency caused by a defect in a B-cell-specific signaling molecule, Btk. There has been little concordance of phenotype with...
Histamine is an antagonist of the acetylcholine receptor at the frog endplate.
Ariyoshi, M., Hasuo, H., Koketsu, K., Ohta, Y., Tokimasa, T.
The effects of histamine on the acetylcholine (ACh) receptor-channel complex were examined by means of voltage-clamp at the frog endplate. ACh was ionophoretically applied to the endplate. Histamine...
A Multimedia Medical Textbook on a Satellitic Network System
Okada, Y., Haruki, Y., Ogushi, Y., Ohta, Y., Hayashi, Y., Kimura, H., ...
Mass Dependence of Lifetimes of hypernuclei
H. Bhang, H. Park, Y. D. Kim, M. Youn, O. Hashimoto, K. Maeda, ...
We have determined the lifetimes of hypernuclei over a broad mass range, A=1156, from which its characteristic mass dependence is clearly observed. The lifetime decreases slightly from that of free...
Large-scale Virtualized Reality
Kitahara Saito Akimichi, I. Kitahara, H. Saito, S. Akimichi, T. Onno, Y. Ohta, ...
Reality in a large-scale space such as a soccer stadium, concert hall, etc. . We have developed an extended system of CMU 3D room [3] in an efficient way so that 4D digitization of a large-scale...
Inhibition of lymph node metastasis by an anti-angiogenic agent, TNP-470.
Ohta, Y., Watanabe, Y., Tabata, T., Oda, M., Hayashi, Y., Endo, Y., ...
We assessed the inhibitory action of TNP-470 on lymph node metastasis in a metastatic model system using athymic nude mice. Mice were injected subcutaneously with 5 x 10(6) HT-1080 cells in the right...
Vascular endothelial growth factor and lymph node metastasis in primary lung cancer.
Ohta, Y., Watanabe, Y., Murakami, S., Oda, M., Hayashi, Y., Nonomura, A., ...
The relationship between vascular endothelial growth factor (VEGF) and lymph node metastasis was studied in 90 cases of primary lung cancer without distant metastasis. As a result of quantitative...
Kajita, T, Ohta, Y, Kimura, K, Tamura, M, Tanaka, Y, Tsunezuka, Y, ...
Expression of vascular endothelial growth factor (VEGF)-C and that of its receptors were assessed in non-small cell lung cancer. Immunohistochemistry revealed positive VEGF-C expression in 38.7%...
Ohta, Y, Shridhar, V, Bright, R K, Kalemkerian, G P, Du, W, Carbone, M, ...
The vascular endothelial growth factor (VEGF) family is a novel regulator of endothelial cell proliferation. We assessed the mRNA expression of VEGF, VEGF type C (VEGF-C) and their receptors together...