Y. Homma

Publication List Details

Period

1995 - 2007

Number

39

Co-Authors

Field-angle-dependent specific heat measurements and gap determination of a heavy fermion superconductor URu2Si2 (2007)

Yano, K., Sakakibara, T., Tayama, T., Yokoyama, M., Amitsuka, H., Homma, Y., ...

To identify the superconducting gap structure in URu2Si2 we perform field-angle-dependent specific heat measurements for the two principal orientations in addition to field rotations, and theoretical...

Stoner gap in the superconducting ferromagnet UGe2 (2005)

Aso, N., Motoyama, G., Uwatoko, Y., Ban, S., Nakamura, S., Nishioka, T., ...

We report the temperature ($T$) dependence of ferromagnetic Bragg peak intensities and dc magnetization of the superconducting ferromagnet UGe2 under pressure ($P$). We have found that the low-$T$...

Anisotropic superconducting gap in transuranium superconductor PuRhGa$_{5}$: Ga NQR study on a single crystal (2005)

Sakai, H., Tokunaga, Y., Fujimoto, T., Kambe, S., Walstedt, R. E., Yasuoka, H., ...

^{69,71}Ga NMR/NQR studies have been performed on a single crystal of the transuranium superconductor PuRhGa_{5} with Tc ~ 9 K. We have observed a ^{69}Ga NQR line at ~29.15 MHz, and assigned it to...

Temperature dependent PL from SWNTs (2004)

Lefebvre, J., Finnie, P., Homma, Y.

Photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopy of pillar-suspended single-walled carbon nanotubes has been measured for temperatures between 300 K and 5 K.

Photoluminescence from single walled carbon nanotubes: a comparison between suspended and micelle-encapsulated nanotubes (2003)

Lefebvre, J., Fraser, J. M., Homma, Y., Finnie, P.

Single walled carbon nanotubes (SWNTs) are luminescent. Up to now, two preparation methods, both of which isolate individual SWNTs, have enabled the detection of nanotube bandgap photoluminescence...

Crystal-to-Amorphous Transition of NiV and NiZr Intermetallic Compounds by Mechanical Milling. (1998)

Homma, Y., Fukunaga, T., Misawa, M., Suzuki, K.

Mechanical milling was used in carrying out solid state amorphizing transformation of Ni4V6 and NiZr intermetallic compounds. The topological variation of structure units from octahedron to...

INDEXES OF REFRACTION OF ZINC SULFIDE, ZINC SELENIDE, ZINC TELLURIDE, CADMIUM SULFIDE, AND CADMIUM TELLURIDE IN THE FAR INFRARED. (1998)

Hattori, T., Homma, Y., Tacke, M.

The indices of refraction of pure ZnS, ZnSe, and ZnTe at 2, 80, and 300 degrees K, have been measured in the spectral region from 10 to 100 cm-1. The indices of refraction can be described by the...

Secondary ion mass spectrometry round-robin study for relative sensitivity factors in gallium arsenide (1998)

Homma, Y., Tohjou, F., Masamoto, A., Shibata, M., Shichi, H., Yoshioka, Y., ...

Round-robin studies on relative sensitivity factors (RSFs) in secondary ion mass spectrometry (SIMS) were conducted using bulk GaAs samples uniformly doped with various impurity elements. A total of...

Importance of fatty acid substituents of chemically synthesized lipid A-subunit analogs in the expression of immunopharmacological activity.

Kumazawa, Y, Nakatsuka, M, Takimoto, H, Furuya, T, Nagumo, T, Yamamoto, A, ...

The immunopharmacological activities of chemically synthesized lipid A-subunit analogs, 4-O-phosphono-D-glucosamine derivatives carrying different N- and 3-O-linked acyl groups, were investigated....

Translocation of protein kinase C in human leukemia cells susceptible or resistant to differentiation induced by phorbol 12-myristate 13-acetate.

Homma, Y, Henning-Chubb, C B, Huberman, E

We investigated the possible relationship between the susceptibility of cells to differentiation induced by phorbol 12-myristate 13-acetate (PMA) and the subcellular translocation of calcium- and...

Tyrosine kinases Lyn and Syk regulate B cell receptor-coupled Ca2+ mobilization through distinct pathways.

Takata, M, Sabe, H, Hata, A, Inazu, T, Homma, Y, Nukada, T, ...

Stimulation of B lymphocytes through their antigen receptor (BCR) results in rapid increases in tyrosine phosphorylation on a number of proteins and induces both an increase of phosphatidylinositol...

A dual functional signal mediator showing RhoGAP and phospholipase C-delta stimulating activities.

Homma, Y, Emori, Y

We have cloned a novel regulator protein, p122, in the PLC-delta signalling pathway by screening a rat brain expression library with antiserum raised against purified phospholipase C-delta 1...

Isolation and characterization of a gamma-type phosphoinositide-specific phospholipase C (PLC-gamma 2).

Homma, Y, Emori, Y, Shibasaki, F, Suzuki, K, Takenawa, T

A novel bovine spleen phosphoinositide-specific phospholipase C (PLC) has been identified with respect to immunoreactivity with four independent antibodies against each of the PLC isoenzymes, and...

Evidence for involvement of phospholipase C-gamma 2 in signal transduction of platelet-derived growth factor in vascular smooth-muscle cells.

Homma, Y, Sakamoto, H, Tsunoda, M, Aoki, M, Takenawa, T, Ooyama, T

In order to examine the mechanisms underlying smooth-muscle cell proliferation, we investigated effect of platelet-derived growth factor (PDGF) dimers on proliferation of rabbit vascular...

Purification of two distinct types of phosphoinositide-specific phospholipase C from rat liver. Enzymological and structural studies.

Nakanishi, O, Homma, Y, Kawasaki, H, Emori, Y, Suzuki, K, Takenawa, T

Two kinds of phosphoinositide-specific phospholipase C (PLC) were purified from rat liver by acid precipitation and several steps of column chromatography. About 50% of the activity could be...

Evidence for differential activation of arachidonic acid metabolism in formylpeptide- and macrophage-activation-factor-stimulated guinea-pig macrophages.

Homma, Y, Hashimoto, T, Nagai, Y, Takenawa, T

Alterations of phospholipid and arachidonic acid metabolism were studied by treatment of guinea-pig peritoneal-exudate macrophages with chemotactic peptide, formylmethionyl-leucylphenylalanine...

Importance of fatty acid substituents of chemically synthesized lipid A-subunit analogs in the expression of immunopharmacological activity.

Kumazawa, Y, Nakatsuka, M, Takimoto, H, Furuya, T, Nagumo, T, Yamamoto, A, ...

The immunopharmacological activities of chemically synthesized lipid A-subunit analogs, 4-O-phosphono-D-glucosamine derivatives carrying different N- and 3-O-linked acyl groups, were investigated....

Translocation of protein kinase C in human leukemia cells susceptible or resistant to differentiation induced by phorbol 12-myristate 13-acetate.

Homma, Y, Henning-Chubb, C B, Huberman, E

We investigated the possible relationship between the susceptibility of cells to differentiation induced by phorbol 12-myristate 13-acetate (PMA) and the subcellular translocation of calcium- and...

Tyrosine kinases Lyn and Syk regulate B cell receptor-coupled Ca2+ mobilization through distinct pathways.

Takata, M, Sabe, H, Hata, A, Inazu, T, Homma, Y, Nukada, T, ...

Stimulation of B lymphocytes through their antigen receptor (BCR) results in rapid increases in tyrosine phosphorylation on a number of proteins and induces both an increase of phosphatidylinositol...

A dual functional signal mediator showing RhoGAP and phospholipase C-delta stimulating activities.

Homma, Y, Emori, Y

We have cloned a novel regulator protein, p122, in the PLC-delta signalling pathway by screening a rat brain expression library with antiserum raised against purified phospholipase C-delta 1...

Isolation and characterization of a gamma-type phosphoinositide-specific phospholipase C (PLC-gamma 2).

Homma, Y, Emori, Y, Shibasaki, F, Suzuki, K, Takenawa, T

A novel bovine spleen phosphoinositide-specific phospholipase C (PLC) has been identified with respect to immunoreactivity with four independent antibodies against each of the PLC isoenzymes, and...

Evidence for involvement of phospholipase C-gamma 2 in signal transduction of platelet-derived growth factor in vascular smooth-muscle cells.

Homma, Y, Sakamoto, H, Tsunoda, M, Aoki, M, Takenawa, T, Ooyama, T

In order to examine the mechanisms underlying smooth-muscle cell proliferation, we investigated effect of platelet-derived growth factor (PDGF) dimers on proliferation of rabbit vascular...

Purification of two distinct types of phosphoinositide-specific phospholipase C from rat liver. Enzymological and structural studies.

Nakanishi, O, Homma, Y, Kawasaki, H, Emori, Y, Suzuki, K, Takenawa, T

Two kinds of phosphoinositide-specific phospholipase C (PLC) were purified from rat liver by acid precipitation and several steps of column chromatography. About 50% of the activity could be...

Evidence for differential activation of arachidonic acid metabolism in formylpeptide- and macrophage-activation-factor-stimulated guinea-pig macrophages.

Homma, Y, Hashimoto, T, Nagai, Y, Takenawa, T

Alterations of phospholipid and arachidonic acid metabolism were studied by treatment of guinea-pig peritoneal-exudate macrophages with chemotactic peptide, formylmethionyl-leucylphenylalanine...

Phospholipase C activation in the cytotoxic response of human natural killer cells requires protein-tyrosine kinase activity.

Whalen, M M, Doshi, R N, Homma, Y, Bankhurst, A D

Treatment of highly purified natural killer (NK) cells with the protein-tyrosine kinase (PTK) inhibitors, genistein and herbimycin A, diminished their ability to lyse K562 target cells by as much as...

Aberrant accumulation of phospholipase C-delta in Alzheimer brains.

Shimohama, S., Homma, Y., Suenaga, T., Fujimoto, S., Taniguchi, T., Araki, W., ...

Since phosphoinositide-specific phospholipase C (PLC) is one of the key molecules in signal transduction, the authors assessed its involvement in Alzheimer's disease (AD). Immunostaining of a...

Rat urinary bladder denuded of urothelium. An in vivo model for the epithelial-stromal interactions in carcinogenesis.

Samma, S., Homma, Y., Oyasu, R.

To investigate epithelial-stromal interactions in bladder carcinogenesis, the authors developed an experimental model using a heterotopically transplanted rat urinary bladder (HTB). A rat urinary...

Spectral and waveform characteristics of fine and coarse crackles.

Munakata, M, Ukita, H, Doi, I, Ohtsuka, Y, Masaki, Y, Homma, Y, ...

Two acoustically different types of lung crackles, fine and coarse, occur in different pathophysiological conditions. To differentiate these crackles from objective characteristics of frequency...

Beta 2 adrenergic receptor gene restriction fragment length polymorphism and bronchial asthma.

Ohe, M, Munakata, M, Hizawa, N, Itoh, A, Doi, I, Yamaguchi, E, ...

BACKGROUND--Beta 2 adrenergic dysfunction may be one of the underlying mechanisms responsible for atopy and bronchial asthma. The gene encoding the human beta 2 adrenergic receptor (beta 2ADR) has...

Enhancement of goblet cell hyperplasia and airway hyperresponsiveness by salbutamol in a rat model of atopic asthma

Kamachi, A, Munakata, M, Nasuhara, Y, Nishimura, M, Ohtsuka, Y, Amishima, M, ...

BACKGROUND—Goblet cell hyperplasia (GCH) is a prominent feature in animal models of atopic asthma produced by immunisation and following multiple challenges with antigens. The aim of this study was...