Energy gap formation in a valence fluctuating compound CeIrSb probed by Sb NMR and NQR (2007)
Kawasaki, Y., Izumi, M., Kishimoto, Y., Ohno, T., Tou, H., Inaoka, Y., ...
Sb-NMR/NQR study has revealed a formation of a pseudogap at the Fermi level in the density of states in a valence fluctuating compound CeIrSb. The nuclear spin-lattice relaxation rate divided by...
11B NMR study of superconductivity in YRuB2 and LuRuB2 (2007)
Kishimoto, Y., Kawasaki, Y., Tanabe, M., Tanaka, T., Ohno, T., Ghosh, G., ...
Continuous measurements of upper atmospheric lightning discharges by EUSO (2006)
Sato, M., Takizawa, Y., Kawasaki, Y., Bertaina, M., Ebisuzaki, T., ...
In this study we present possibility of continuous measurements of lightning-associated transient luminous events (TLEs) from the international space station using the Extreme Universe Space...
Continuous measurements of upper atmospheric lightning discharges by EUSO (2006)
Sato, M., Takizawa, Y., Kawasaki, Y., Bertaina, M., Ebisuzaki, T., ...
In this study we present possibility of continuous measurements of lightning-associated transient luminous events (TLEs) from the international space station using the Extreme Universe Space...
Continuous measurements of upper atmospheric lightning discharges by EUSO (2006)
Sato, M., Takizawa, Y., Kawasaki, Y., Bertaina, M., Ebisuzaki, T., ...
In this study we present possibility of continuous measurements of lightning-associated transient luminous events (TLEs) from the international space station using the Extreme Universe Space...
Kawasaki, Y., Minami, T., Kishimoto, Y., Ohno, T., Zenmyo, K., Kubo, H., ...
$^{139}$La- and $^{55}$Mn-NMR spectra demonstrate that the ground state of the A-site ordered perovskite manganite LaBaMn$_2$O$_6$ is a spatial mixture of the ferromagnetic (FM) and antiferromagnetic...
Kotegawa, H., Harada, A., Kawasaki, S., Kawasaki, Y., Kitaoka, Y., Haga, Y., ...
We report on the itinerant ferromagnetic superconductor UGe_2 through ^73Ge-NQR measurements under pressure (P). The P dependence of the NQR spectrum signals a first-order transition from the...
Unconventional Superconductivity in Heavy Fermion Systems (2004)
Kitaoka, Y., Kawasaki, S., Mito, T., Kawasaki, Y.
We review the studies on the emergent phases of superconductvity and magnetism in the $f$-electron derived heavy-fermion (HF) systems by means of the nuclear-quadrupole-resonance (NQR) under...
Kitaoka, Y., Kawasaki, S., Kawasaki, Y., Mito, T.
We report the discovery of exotic superconductivity (SC) and novel magnetism in heavy-fermion (HF) compounds, CeCu$_2$Si$_2$, CeRhIn$_5$ and CeIn$_3$ through nuclear-quadrupole-resonance (NQR)...
Kawasaki, Y., Ishida, K., Kawasaki, S., Mito, T., Kitaoka, Y., ...
We report a pressure ($P$) effect on CeCu$_2$(Si$_{0.98}$Ge$_{0.02}$)$_2$ where an antiferromagnetic (AFM) order at $T_N \sim$ 0.75 K coexists with superconductivity below $T_c \sim$ 0.4 K\@. At...
Kawasaki, Y., Kawasaki, S., Yashima, M., Mito, T., Kitaoka, Y., ...
We report In-NQR and Co-NMR experiments of CeCoIn$_5$ that undergoes a superconducting transition with a record high $T_{\rm c}$ = 2.3 K to date among heavy-fermion superconductors. At zero magnetic...
Kawasaki, S., Mito, T., Kawasaki, Y., Kitaoka, Y., Aoki, D., ...
We report systematic measurements of ac-susceptibility, nuclear-quadrupole-resonance spectrum, and nuclear-spin-lattice-relaxation time ($T_1$) on the pressure ($P$)- induced heavy-fermion (HF)...
μSR and low-temperature antiferromagnetism in the ordered non-Fermi-liquid compound YbRh2Si2 (2003)
Ishida, K., MacLaughlin, D. E., Okamoto, K., Kawasaki, Y., Kitaoka, Y., Nieuwenhuys, G. J., ...
Low-temperature magnetic order and spin dynamics in YbRh2Si2 (2003)
Ishida, K., MacLaughlin, D. E., Young, B. L., Okamoto, K., Kawasaki, Y., Kitaoka, Y., ...
Mito, T., Kawasaki, S., Kawasaki, Y., Kitaoka, Y., Aoki, D., ...
We report a study on the interplay between antiferromagnetism (AFM) and superconductivity (SC) in a heavy-fermion compound CeRhIn$_5$ under pressure $P=1.75$ GPa. The onset of the magnetic order is...
Energy determination in the Akeno Giant Air Shower Array experiment (2002)
Takeda, M., Sakaki, N., Honda, K., Chikawa, M., Fukushima, M., Hayashida, N., ...
Using data from more than ten-years of observations with the Akeno Giant Air Shower Array (AGASA), we published a result that the energy spectrum of ultra-high energy cosmic rays extends beyond the...
Kotegawa, H., Yogi, M., Imamura, Y., Kawasaki, Y., Kitaoka, Y., ...
We report Sb-NQR results which evidence a heavy-fermion (HF) behavior and an unconventional superconducting (SC) property in the filled-skutterudite compound PrOs_4Sb_12 revealing a SC transition...
^{115}In-NQR evidence for unconventional superconductivity in CeIn_3 under pressure (2002)
Kawasaki, S., Mito, T., Kawasaki, Y., Kitaoka, Y., Shishido, H., ...
We report evidence for unconventional superconductivity in CeIn_3 at a pressure P = 2.65 GPa above critical pressure (P_c ~ 2.5 GPa) revealed by the measurements of nuclear-spin-lattice-relaxation...
Coexistence of antiferromagnetism and superconductivity in heavy-fermions systems (2002)
Kitaoka, Y., Kawasaki, Y., Mito, T., Kawasaki, S., Ishida, K., ...
We report the novel pressure(P)-temperature(T) phase diagrams of antiferromagnetism (AF) and superconductivity (SC) in CeRhIn$_5$, CeIn$_3$ and CeCu$_2$Si$_2$ revealed by the NQR measurement. In the...
YbRh2Si2: Spin Fluctuations in the Vicinity of a Quantum Critical Point at Low Magnetic Field (2002)
Ishida, K., Okamoto, K., Kawasaki, Y., Kitaoka, Y., Trovarelli, O., Geibel, C., ...
We report a Si-29 NMR study on aligned single crystals of YbRh2Si2 which shows behavior characteristic of a quantum critical point (QCP: T-N-->0). The Knight shift K and the nuclear spin-lattice...
Cu-NQR study of CeCu2(Si0.98Ge0.02)2 under hydrostatic pressure (2002)
Kawasaki, Y., Ishida, K., Obinata, K., Mito, T., Zheng, G. Q., Kitaoka, Y., ...
We report a pressure effect on CeCu2(Si0.98Ge0.02)(2) where an anti ferromagnetic order below T-N similar to 0.75 K coexists with superconductivity below T-c similar to0.4 K. At pressures exceeding...
Exotic magnetism and superconductivity in Ge-substituted CeCu2Si2: A Cu NQR study (2002)
Kawasaki, Y., Ishida, K., Obinata, K., Tabuchi, K., Kashima, K., Kitaoka, Y., ...
We report Cu NQR results on Ge-doped heavy-fermion superconductors CeCu2(Si1-xGex)(2) (0< x≦0.2) and compare with previous results on Ce0.99Cu2.02Si2 (x=0). Once only 1% Ge is substituted for Si to...
Coexistence of antiferromagnetism and superconductivity in heavy-fermion systems (2002)
Kitaoka, Y., Kawasaki, Y., Mito, T., Kawasaki, S., Zheng, G. Q., Ishida, K., ...
We report the novel pressure (P)-temperature (T) phase diagrams of antiferromagnetism (AFM) and superconductivity (SC) in CeRhIn5, CeIn3, and CeCu2Si2 revealed by the nuclear quadrupole resonance...
Koda, A., Higemoto, W., Kadono, R., Kawasaki, Y., Ishida, K., Kitaoka, Y., ...
Muon spin rotation measurements under high transverse fields (HTF-ASR) have been performed on polycrystalline samples of Ce0.99Cu2.02Si2. The muon hyperfine coupling constant was determined to be...
Kadono, R., Higemoto, W., Koda, A., Kawasaki, Y., Hanawa, M., Hiroi, Z.
The quasiparticle excitations in the mixed state of Cd2Re2O7 have been studied by means of muon spin rotation/relaxation. The temperature dependence of the magnetic penetration depth (lambda) is...
Kawasaki, S., Mito, T., Thessieu, C., Kawasaki, Y., Ishida, K., ...
We report the novel pressure($P$) - temperature($T$) phase diagram of antiferromagnetism and superconductivity in CeRhIn$_5$ and CeIn$_3$ revealed by the $^{115}$In nuclear-spin-lattice-relaxation...
Mito, T., Kawasaki, S., Kawasaki, Y., Ishida, K., Kitaoka, Y., ...
We report $^{115}$In nuclear-quadrupole-resonance (NQR) measurements of the pressure($P$)-induced superconductor CeRhIn$_5$ in the antiferromagnetic (AF) and superconducting (SC) states. In the AF...
Magnetism and Superconductivity in CeCu2(Si1-xGex)2 Probed by Cu NQR (2001)
Kawasaki, Y., Ishida, K., Obinata, K., Tabuchi, K., Kashima, K., Kitaoka, Y., ...
Kawasaki, Y., Obinata, K., Ishida, K., Mito, T., Kitaoka, Y., ...
Kawasaki, Y., Ishida, K., Mito, T., Thessieu, C., Kitaoka, Y., ...
We report Cu nuclear-quadrupole-resonance results under pressure on a homogeneous CeCu2Si2 (Tc = 0.65 K) that revealed critical magnetic fluctuations at the border to an antiferromagnetic phase. This...
Kitaoka, Y., Ishida, K., Kawasaki, Y., Trovarelli, O., Geibel, C., Steglich, F.
We report on the basis of Cu-NQR measurements that superconductivity (SC) and antiferromagnetism (AF) coexist on a microscopic level in CeCu_{2}(Si_{1-x}Ge_{x})_{2}, once a tiny amount of 1%Ge (x =...
Updated AGASA event list above 4x10^19eV (2000)
Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., Kakizawa, S., ...
After our Ap.J. publication of the Akeno Giant Air Shower Array (AGASA) results in 1999 (Takeda et al., 1999), we observed nine events with energies above 4 $\times$ 10$^{19}$eV until May 2000. This...
The Anisotropy of Cosmic Ray Arrival Direction around 10^18eV (1999)
Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., Kakizawa, S., ...
Anisotropy in the arrival directions of cosmic rays around 10^{18}eV is studied using data from the Akeno 20 km^2 array and the Akeno Giant Air Shower Array (AGASA), using a total of about 216,000...
Takeda, M., Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., ...
With the Akeno Giant Air Shower Array (AGASA), 581 cosmic rays above 10^19eV, 47 above 4 x 10^19eV, and 7 above 10^20eV are observed until August 1998. Arrival direction distribution of these...
Crossover behaviour from magnetism to superconductivity in CexCu2Si2 (1999)
Ishida, K., Kawasaki, Y., Tabuchi, K., Kashima, K., Kitaoka, Y., Asayama, K., ...
Takeda, M., Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., ...
The cosmic-ray energy spectrum above 10^{18.5} eV is reported using the updated data set of the Akeno Giant Air Shower Array (AGASA) from February 1990 to October 1997. The energy spectrum extends...
The Anisotropy of Cosmic Ray Arrival Directions around 10$^{18}$eV (1998)
Hayashida, AGASA Collaboration: N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., Kamata, K., ...
Anisotropy in the arrival directions of cosmic rays with energies above 10$^{17}$eV is studied using data from the Akeno 20 km$^2$ array and the Akeno Giant Air Shower Array (AGASA), using a total of...
The Detection of TeV Gamma Rays from Crab using the Telescope Array Prototype (1997)
Aiso, S., Chikawa, M., Hayashi, Y., Hayashida, N., Hibino, K., Hirasawa, H., ...
The Telescope Array prototype detectors were installed at Akeno Observatory and at the Utah Fly's Eye site. Using these detectors, we have observed the Crab Nebula and AGN's since the end of 1995....
Ishiai, M, Wada, C, Kawasaki, Y, Yura, T
Replication of mini-F plasmid requires the plasmid-encoded RepE initiator protein and several host factors including DnaJ, DnaK, and GrpE, heat shock proteins of Escherichia coli. The RepE protein...
Wild, J, Kamath-Loeb, A, Ziegelhoffer, E, Lonetto, M, Kawasaki, Y, Gross, C A
A set of 37 mutations in DnaK, the Escherichia coli homologue of the 70-kDa heat shock proteins, was isolated using a selection for high constitutive expression of heat shock proteins. Of these, 11...
Matsunaga, F, Kawasaki, Y, Ishiai, M, Nishikawa, K, Yura, T, Wada, C
The RepE initiator protein (251 residues) is essential for mini-F replication in Escherichia coli and exhibits two major functions: initiation of DNA replication from ori2 and autogenous repression...
Mutants of Saccharomyces cerevisiae resistant to 2-amino-4-methyl-5-beta-hydroxyethylthiazole, an antimetabolite of 4-methyl-5-beta-hydroxyethylthiazole (hydroxyethylthiazole), which are deficient in...
A positive regulatory gene, THI3, is required for thiamine metabolism in Saccharomyces cerevisiae.
Nishimura, H, Kawasaki, Y, Kaneko, Y, Nosaka, K, Iwashima, A
We have isolated a thiamine auxotrophic mutant carrying a recessive mutation which lacks the positive regulatory gene, THI3, which differs in the regulation of thiamine transport from the THI2 (PHO6)...
Ishiai, M, Wada, C, Kawasaki, Y, Yura, T
A subset of Escherichia coli heat shock proteins, DnaJ, DnaK, and GrpE, is required for mini-F plasmid replication, presumably at the step of functioning of the RepE initiator protein. We have...
Mini-F plasmids cannot replicate in Escherichia coli strains (delta rpoH) lacking sigma 32, presumably because transcription of the repE gene encoding the replication initiator protein (RepE protein)...
Nishimura, H, Kawasaki, Y, Nosaka, K, Kaneko, Y, Iwashima, A
We identified a strain carrying a recessive constitutive mutation (thi80-1) with an altered thiamine transport system, thiamine-repressible acid phosphatase, and several enzymes of thiamine synthesis...
Mcm2, Mcm3, and Mcm5/Cdc46 are conserved proteins essential for the initiation of DNA synthesis at replication origins in Saccharomyces cerevisiae. The accumulation of these proteins in the nucleus...
Merchant, A M, Kawasaki, Y, Chen, Y, Lei, M, Tye, B K
We describe a new minichromosome maintenance factor, Mcm10, and show that this essential protein is involved in the initiation of DNA replication in Saccharomyces cerevisiae. The mcm10 mutant has an...
Coexistence of different pathways in the metabolism of n-propylbenzene by Pseudomonas sp.
Jigami, Y, Kawasaki, Y, Omori, T, Minoda, Y
Pseudomonas desmolytica S449B1 and Pseudomonas convexa S107B1 grown on n-propylbenzene oxidized n-propylbenzene to beta-phenylpropionic acid and benzoic acid by initial oxidation of the n-propyl side...
The RFC2 gene encoding a subunit of replication factor C of Saccharomyces cerevisiae.
Noskov, V, Maki, S, Kawasaki, Y, Leem, S H, Ono, B, Araki, H, ...
Replication Factor C (RF-C) of Saccharomyces cerevisiae is a complex that consists of several different polypeptides ranging from 120- to 37 kDa (Yoder and Burgers, 1991; Fien and Stillman, 1992),...
Immunohistochemical analysis of amylase isoenzymes in thyroid cancer.
Higashiyama, M, Doi, S, Tomita, N, Monden, T, Murotani, M, Kawasaki, Y, ...
The expression of amylase in various histological types of thyroid cancer was studied by an immunohistochemical technique, using a polyclonal antiamylase antiserum and two monoclonal antibodies...
Regulation of thiamine biosynthesis in Saccharomyces cerevisiae.
Kawasaki, Y, Nosaka, K, Kaneko, Y, Nishimura, H, Iwashima, A
A pho6 mutant of Saccharomyces cerevisiae, lacking a regulatory gene for the synthesis of periplasmic thiamine-repressible acid phosphatase activity, was found to be auxotrophic for thiamine. The...
Suzuki, T, Kawasaki, Y, Arita, T, Nakamura, A
The blood clam Barbatia lima subsp. from Amami-Oshima, Japan, expresses three types of haemoglobins in erythrocytes: a tetramer (alpha 2 beta 2), a homodimer (delta 2) and a polymer consisting of two...
Kaneto, H, Fujii, J, Myint, T, Miyazawa, N, Islam, K N, Kawasaki, Y, ...
Several reducing sugars brought about apoptosis in isolated rat pancreatic islet cells and in the pancreatic beta-cell-derived cell line HIT. This apoptosis was characterized biochemically by...
Suzuki, T, Kawasaki, Y, Furukohri, T
Arginine kinase (AK) was isolated from the body wall muscle of the primitive sea anemone Anthopleura japonicus by Ultrogel AcA34 gel filtration, DEAE-32 chromatography and elution on a Cosmogel-SP...
Immunological detection of fructated proteins in vitro and in vivo.
Miyazawa, N, Kawasaki, Y, Fujii, J, Theingi, M, Hoshi, A, Hamaoka, R, ...
An antibody has been raised against fructated lysine in proteins by immunizing fructated lysine-conjugated ovalbumin in rabbits. The affinity-purified antibody specifically recognized proteins...
A New Fluorescence Staining Assay for Visualizing Living Microorganisms in Soil
Tsuji, T., Kawasaki, Y., Takeshima, S., Sekiya, T., Tanaka, S.
5- (and 6-)Sulfofluorescein diacetate (SFDA), which is converted to a fluorescent product by intracellular esterase activity, was used to stain living microorganisms, including bacteria,...