Y. Fujiwara

Publication List Details

Period

1985 - 2008

Number

103

Co-Authors

P-wave Lambda N - Sigma N coupling and the spin-orbit splitting of 9 Lambda Be (2008)

Fujiwara, Y., Kohno, M., Suzuki, Y.

We reexamine the spin-orbit splitting of 9 Lambda Be excited states in terms of the SU_6 quark-model baryon-baryon interaction. The previous folding procedure to generate the Lambda alpha spin-orbit...

Equivalent hyperon-nucleon interactions in low-momentum space (2007)

Kohno, M., Okamoto, R., Kamada, H., Fujiwara, Y.

Equivalent interactions in a low-momentum space for the $\Lambda N$, $\Sigma N$ and $\Xi N$ interactions are calculated, using the SU$_6$ quark model potential as well as the Nijmegen OBEP model as...

Addendum: Triton and hypertriton binding energies calculated from SU_6 quark-model baryon-baryon interactions (2007)

Fujiwara, Y., Suzuki, Y., Kohno, M., Miyagawa, K.

Previously we calculated the binding energies of the triton and hypertriton, using an SU_6 quark-model interaction derived from a resonating-group method of two baryon clusters. In contrast to the...

n alpha Resonating-Group Calculation with a Quark-Model G-Matrix NN Interaction (2007)

Fujiwara, Y., Kohno, M., Suzuki, Y.

We calculate n alpha phase-shifts and scattering observables in the resonating-group method, using the nuclear-matter G-matrix of an SU_6 quark-model NN interaction. The G-matrix is generated in the...

Local versus nonlocal $\alpha\alpha$ interactions in $3\alpha$ description of $^{12}$C (2007)

Suzuki, Y., Matsumura, H., Orabi, M., Fujiwara, Y., Descouvemont, P., Theeten, M., ...

Local $\alpha \alpha$ potentials fail to describe $^{12}$C as a $3\alpha$ system. Nonlocal $\alpha \alpha$ potentials that renormalize the energy-dependent kernel of the resonating group method allow...

X-ray magnetic circular dichroism studies of (001)-oriented NiFe/Mn_100-x Pt_x exchange bilayers (2006)

Yamato, T., Kume, T., Kato, T., Tsunashima, S., Nakamura, T., Fujiwara, Y., ...

(001)-oriented Ni80Fe20/Mn100−x Ptx and Co90Fe10/Mn100−x Ptx epitaxial bilayers were prepared using the molecular beam epitaxy method. Their exchange anisotropies were measured using a torque...

Semiclassical Distorted Wave Model Analysis of the $(\pi^-,K^+)$ $\Sigma$ Formation Inclusive Spectrum (2006)

Kohno, M., Fujiwara, Y., Watanabe, Y., Ogata, K., Kawai, M.

$(\pi^-,K^+)$ hyperon production inclusive spectra with $p_\pi =1.2$ GeV/c measured at KEK on $^{12}$C and $^{28}$Si are analyzed by the semiclassical distorted wave model. Single-particle wave...

Lambda alpha, Sigma alpha and Xi alpha potentials derived from the SU6 quark-model baryon-baryon interaction (2006)

Fujiwara, Y., Kohno, M., Suzuki, Y.

We calculate Lambda alpha, Sigma alpha and Xi alpha potentials from the nuclear-matter G-matrices of the SU6 quark-model baryon-baryon interaction. The alpha-cluster wave function is assumed to be a...

Baryon-baryon interactions in the SU6 quark model and their applications to light nuclear systems (2006)

Fujiwara, Y., Suzuki, Y., Nakamoto, C.

Interactions between the octet-baryons (B8) in the spin-flavor SU6 quark model are investigated in a unified coupled-channels framework of the resonating-group method (RGM). The interaction...

Removal of forbidden states in a three-$\alpha$ system (2006)

Matsumura, H., Orabi, M., Suzuki, Y., Fujiwara, Y.

The ground and excited 0$^+$ states of $^{12}$C are investigated in a 3$\alpha$ macroscopic model using the deep potential of Buck, Friedrich and Wheatley. The elimination of forbidden states is...

Miniaturized LiTaO3 Strip Resonator, (2005)

Fujiwara,Y., Yamada,S., Wakatsuki,N.

The piezoactive shear wave in LiTaO3 X-cut plate has a velocity of 4330 m/s for the fast mode and attractively high electro-mechanical coupling (47%). But the temperature characteristics of the X-cut...

Strength of the $\Sigma$ Single-Particle Potential in Nuclei From Semiclassical Distorted Wave Model Analysis of $(\pi^-,K^+)$ Inclusive Spectrum (2004)

Kohno, M., Fujiwara, Y., Watanabe, Y., Ogata, K., Kawai, M.

Semiclassical distorted wave model is developed to describe $(\pi^-,K^+)$ inclusive spectra related to $\Sigma^-$-formation measured at KEK with $p_\pi =1.2$ GeV/c. The shape and magnitude of the...

Spin-orbit splitting of 9 Lambda Be excited states studied with the SU_6 quark-model baryon-baryon interactions (2004)

Fujiwara, Y., Kohno, M., Miyagawa, K., Suzuki, Y.

The previous Faddeev calculation of the two-alpha plus Lambda system for 9 Lambda Be is extended to incorporate the spin-orbit components of the SU_6 quark-model baryon-baryon interactions. We employ...

Faddeev calculation of 6 He Lambda Lambda using SU_6 quark-model baryon-baryon interactions (2004)

Fujiwara, Y., Kohno, M., Miyagawa, K., Suzuki, Y.

Quark-model hyperon-nucleon and hyperon-hyperon interactions by the Kyoto-Niigata group are applied to the two-Lambda plus alpha system in a new three-cluster Faddeev formalism using two-cluster...

Quark-Model Baryon-Baryon Interaction and its Applications to Hypernuclei (2004)

Fujiwara, Y., Nakamoto, C., Suzuki, Y., Kohno, M., Miyagawa, K.

The quark-model baryon-baryon interaction fss2, proposed by the Kyoto-Niigata group, is a unified model for the complete baryon octet (B_8=N, Lambda, Sigma and Xi), which is formulated in a framework...

Faddeev calculation of 3 alpha and alpha alpha Lambda systems using alpha alpha resonating-group method kernel (2004)

Fujiwara, Y., Miyagawa, K., Kohno, M., Suzuki, Y., Baye, D.

We carry out Faddeev calculations of three-alpha (3 alpha) and two-alpha plus Lambda (alpha alpha Lambda) systems, using two-cluster resonating-group method kernels. The input includes an effective...

Faddeev Calculation of the Hypertriton using the SU_6 Quark-Model Nucleon-Nucleon and Hyperon-Nucleon Interactions (2004)

Fujiwara, Y., Miyagawa, K., Kohno, M., Suzuki, Y.

Quark-model nucleon-nucleon and hyperon-nucleon interactions by the Kyoto- Niigata group are applied to the hypertriton calculation in a new three-cluster Faddeev formalism using the two-cluster...

Case of Almost Redundant Components in 3 alpha Faddeev Equations (2003)

Fujiwara, Y., Suzuki, Y., Kohno, M.

The 3 alpha orthogonality condition model using the Pauli-forbidden bound states of the Buck, Friedlich and Wheatly alpha alpha potential can yield a compact 3 alpha ground state with a large binding...

Solving Three-Cluster OCM Equations in the Faddeev Formalism (2003)

Fujiwara, Y., Kohno, M., Suzuki, Y.

Two different types of orthogonality condition models (OCM) are equivalently formulated in the Faddeev formalism. One is the OCM which uses pairwise orthogonality conditions for the relative motion...

Brueckner Rearrangement Effects in $^5_\Lambda$He and $^6_{\Lambda\Lambda}$He (2003)

Kohno, M., Fujiwara, Y., Akaishi, Y.

Rearrangement effects in light hypernuclei are investigated in the framework of the Brueckner theory. We can estimate without detailed numerical calculations that the energy of the $\alpha$-core is...

Triton binding energy calculated from the SU_6 quark-model nucleon-nucleon interaction (2002)

Fujiwara, Y., Miyagawa, K., Kohno, M., Suzuki, Y., Nemura, H.

Properties of the three-nucleon bound state are examined in the Faddeev formalism, in which the quark-model nucleon-nucleon interaction is explicitly incorporated to calculate the off-shell T-matrix....

Redundant Components in the 3 alpha Faddeev Equation Using 2 alpha RGM Kernel (2002)

Fujiwara, Y., Suzuki, Y., Miyagawa, K., Kohno, M., Nemura, H.

The 3 alpha Faddeev equation using 2 alpha RGM kernel involves redundant components whose contribution to the total wave function completely cancels out. We propose a practical method to solve this...

Three-Cluster Equation Using Two-Cluster RGM Kernel (2001)

Fujiwara, Y., Nemura, H., Suzuki, Y., Miyagawa, K., Kohno, M.

We propose a new type of three-cluster equation which uses two-cluster resonating-group-method (RGM) kernels. In this equation, the orthogonality of the total wave-function to two-cluster...

Interactions between Octet Baryons in the SU_6 Quark model (2001)

Fujiwara, Y., Kohno, M., Nakamoto, C., Suzuki, Y.

The baryon-baryon interactions for the complete baryon octet (B_8) are investigated in a unified framework of the resonating-group method, in which the spin-flavor SU_6 quark-model wave functions are...

A Realistic Description of Nucleon-Nucleon and Hyperon-Nucleon Interactions in the SU_6 Quark Model (2001)

Fujiwara, Y., Fujita, T., Kohno, M., Nakamoto, C., Suzuki, Y.

We upgrade a SU_6 quark-model description for the nucleon-nucleon and hyperon-nucleon interactions by improving the effective meson-exchange potentials acting between quarks. For the scalar- and...

Hyperon Single-Particle Potentials Calculated from SU6 Quark-Model Baryon-Baryon Interactions (1999)

Kohno, M., Fujiwara, Y., Fujita, T., Nakamoto, C., Suzuki, Y.

Using the SU6 quark-model baryon-baryon interaction recently developed by the Kyoto-Niigata group, we calculate NN, Lambda N and Sigma N G-matrices in ordinary nuclear matter. This is the first...

Single-Particle Spin-Orbit Strengths of the Nucleon and Hyperons by SU6 Quark-Model (1999)

Fujiwara, Y., Kohno, M., Fujita, T., Nakamoto, C., Suzuki, Y.

The quark-model hyperon-nucleon interaction suggests an important antisymmetric spin-orbit component. It is generated from a color analogue of the Fermi-Breit interaction dominating in the one-gluon...

Comments on Closed Bianchi Models (1993)

Fujiwara, Y., Ishihara, H., Kodama, H.

We show several kinematical properties that are intrinsic to the Bianchi models with compact spatial sections. Especially, with spacelike hypersurfaces being closed, (A) no anisotropic expansion is...

The NN interaction in a quark model with quark-antiquark excitations (1987)

Hecht, K. T., Fujiwara, Y.

The and excitations generated by off-shell terms of a Breit quark-gluon interaction are explicitly incorporated into the quark model of the NN system. Coupled channel RGM solutions lead to a...

RGM study of the NN interaction in an extended quark model (1987)

Fujiwara, Y., Hecht, K. T.

The extended quark model study of the NN interaction, in which the () excitations inherent in the quark-gluon interaction are explicitly incorporated into the model space, is completed with the...

NN tensor and LS potentials in a quark model with quark-antiquark excitations (1986)

Fujiwara, Y., Hecht, K. T.

A more detailed study is made of the NN interaction in a quark model in which the (qq) excitations inherent in the quark-gluon interaction are explicitly incorporated into the model space. A unified...

excitations in a quark model of the NN interaction (1986)

Fujiwara, Y., Hecht, K. T.

The excitations generated by off-shell terms of the Fermi-Breit quark-gluon interaction are incorporated into a quark model of the NN system leading to a semiquantitative fit of the NN scattering...

Meson exchange potentials in an NN quark model with quark-antiquark excitations (1986)

Fujiwara, Y., Hecht, K. T.

In a recent quark-model study of the NN interaction, we explicitly incorporated the qq excitations inherent in the quark-gluon interaction lagrangian into the model space, and examined the...

The NN interaction in a quark model with quark-antiquark excitations (1985)

Fujiwara, Y., Hecht, K. T.

Quark-antiquark excitations inherent in the quark-gluon interaction have been incorporated into a quark model of the nucleon to study the effects of such excitations on the NN interaction within the...

Arrested development of embryonic red cell precursors in mouse embryos lacking transcription factor GATA-1.

Fujiwara, Y, Browne, C P, Cunniff, K, Goff, S C, Orkin, S H

The X chromosome-linked transcription factor GATA-1 is expressed specifically in erythroid, mast, megakaryocyte, and eosinophil lineages, as well as in hematopoietic progenitors. Prior studies...

Isolation of a DEAD-family protein gene that encodes a murine homolog of Drosophila vasa and its specific expression in germ cell lineage.

Fujiwara, Y, Komiya, T, Kawabata, H, Sato, M, Fujimoto, H, Furusawa, M, ...

In an effort to study the molecular basis of the determination processes of the mammalian germ cell lineage, we have tried to isolate a mouse gene homolog to vasa, which plays an essential role as a...

Benzimidazolium triflate-activated synthesis of (6-4) photoproduct-containing oligonucleotides and its application.

Iwai, S, Mizukoshi, T, Fujiwara, Y, Masutani, C, Hanaoka, F, Hayakawa, Y

In the solid-phase synthesis of oligonucleotides containing the pyrimidine(6-4)pyrimidone photoproduct using a dinucleotide building block, considerable amounts of by-products were found as the chain...

Degradation of alkylphenol ethoxylates by Pseudomonas sp. strain TR01.

Maki, H, Masuda, N, Fujiwara, Y, Ike, M, Fujita, M

An alkylphenol ethoxylate-degrading bacterium was isolated from activated sludge of a municipal sewage treatment plant by enrichment culture. This organism was found to belong to the genus...

Uracil-DNA glycosylase causes 5-bromodeoxyuridine photosensitization in Escherichia coli K-12.

Yamamoto, Y, Fujiwara, Y

An Escherichia coli uracil-DNA glycosylase-defective mutant (ung-1 thyA) was more resistant than its wild-type counterpart (ung+ thyA) to the killing effect of UV light when cultured in medium...

Interspecies sharing of two distinct nonstructural protein 1 alleles among human and animal rotaviruses as revealed by dot blot hybridization.

Fujiwara, Y, Nakagomi, O

The distribution of the nonstructural protein 1 (NSP1) alleles from human strain AU-1 and canine strain K9 among rotaviruses of human, feline, canine, bovine, and simian origin was studied by a dot...

Isolation and characterization of the cDNA encoding BKLF/TEF-2, a major CACCC-box-binding protein in erythroid cells and selected other cells.

Crossley, M, Whitelaw, E, Perkins, A, Williams, G, Fujiwara, Y, Orkin, S H

CACCC boxes are among the critical sequences present in regulatory elements of genes expressed in erythroid cells, as well as in selected other cell types. While an erythroid cell-specific...

Glomerulosclerosis induced by in vivo transfection of transforming growth factor-beta or platelet-derived growth factor gene into the rat kidney.

Isaka, Y, Fujiwara, Y, Ueda, N, Kaneda, Y, Kamada, T, Imai, E

Glomerulosclerosis, a final common lesion of various glomerular diseases, is characterized by mesangial cell proliferation and extracellular matrix (ECM) expansion. TGF-beta and PDGF are known to...

Mitogen-activated protein kinase and its activator are regulated by hypertonic stress in Madin-Darby canine kidney cells.

Itoh, T, Yamauchi, A, Miyai, A, Yokoyama, K, Kamada, T, Ueda, N, ...

Madin-Darby canine kidney cells behave like the renal medulla and accumulate small organic solutes (osmolytes) in a hypertonic environment. The accumulation of osmolytes is primarily dependent on...

U1 RNA-protein complex preferentially binds to both 5' and 3' splice junction sequences in RNA or single-stranded DNA.

Tatei, K, Takemura, K, Mayeda, A, Fujiwara, Y, Tanaka, H, Ishihama, A, ...

We have investigated factors that recognize the splice junctions for mRNA by means of a rapid and sensitive filter binding assay using chemically synthesized single-stranded (ss) DNA (16-21...

Phospholipase C-mediated hydrolysis of phosphatidylcholine is activated by cis-diamminedichloroplatinum(II).

Nishio, K, Sugimoto, Y, Fujiwara, Y, Ohmori, T, Morikage, T, Takeda, Y, ...

We have investigated the effect of cis-diamminedichloroplatinum(II) (CDDP) on signal transduction pathways. CDDP treatment did not cause any change in the binding of [3H]-phorbol dibutyrate to PC-9...

Purification and characterization of human platelet proteoglycan.

Okayama, M, Oguri, K, Fujiwara, Y, Nakanishi, H, Yonekura, H, Kondo, T, ...

Freshly prepared platelets were shown to contain glycosaminoglycans equivalent to 530 micrograms of hexuronate/10(11) platelets. When the platelets were extracted with 4 M-guanidinium chloride...

A lineage-selective knockout establishes the critical role of transcription factor GATA-1 in megakaryocyte growth and platelet development.

Shivdasani, R A, Fujiwara, Y, McDevitt, M A, Orkin, S H

Transcription factor GATA-1 is essential for red blood cell maturation and, therefore, for survival of developing mouse embryos. GATA-1 is also expressed in megakaryocytes, mast cells, eosinophils,...

Yolk sac angiogenic defect and intra-embryonic apoptosis in mice lacking the Ets-related factor TEL.

Wang, L C, Kuo, F, Fujiwara, Y, Gilliland, D G, Golub, T R, Orkin, S H

The TEL gene, which is frequently rearranged in human leukemias of both myeloid and lymphoid origin, encodes a member of the Ets family of transcription factors. The TEL gene is widely expressed...

Locations of local anesthetic dibucaine in model membranes and the interaction between dibucaine and a Na+ channel inactivation gate peptide as studied by 2H- and 1H-NMR spectroscopies.

Kuroda, Y, Ogawa, M, Nasu, H, Terashima, M, Kasahara, M, Kiyama, Y, ...

To study the molecular mechanisms of local anesthesia, locations of local anesthetic dibucaine in model membranes and the interactions of dibucaine with a Na+ channel inactivation gate peptide have...