H. Nagai

Publication List Details

Period

1988 - 2009

Number

72

Co-Authors

Multiwavelength monitoring of the enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in March-July 2009 (2009)

Collaboration, Fermi/LAT, Angelakis, E., Bailyn, C., Bignall, H., Blanchard, J., Bonning, E. W., ...

Following the recent discovery of gamma rays from the radio-loud narrow-line Seyfert 1 galaxy PMN J0948+0022 (z=0.5846), we started a multiwavelength campaign from radio to gamma rays, which was...

High energy emission from AGN cocoons in clusters of galaxies (2009)

Kino, M., Kawakatu, N., Ito, H., Nagai, H.

Gamma-ray emission from cocoons of young radio galaxies is predicted. Considering the process of adiabatic injection of the shock dissipation energy and mass of the relativistic jet into the cocoon,...

New prediction of extragalactic GeV gamma-ray emission from radio lobes of young AGN jets (2008)

Kino, M., Ito, H., Kawakatu, N., Nagai, H.

We present a new prediction of GeV $\gamma$-ray emission from radio lobes of young AGN jets. In the previous work of Kino et al. (2007), MeV $\gamma$-ray bremsstrahlung emission was predicted from...

Analyses of gustatory related neural responses detected by brain magnetic fields C. Yamamoto (2007)

Nagai Takahashi Nakagawa, C. Yamamoto, H. Nagai, K. Takahashi, S. Nakagawa, M. Yamaguchi, ...

Introduction Recent studies on non-invasive recordings from human brain have shown the existence of tasteelicited activation areas in the cerebral cortex [1,2]. Magnetoencephalogram (MEG) is a...

Effects of Grain Size on Creep Behaviour of Ti-50mol.%Al Intermetallic Compound at 1100 K. (1998)

Takahashi, T., Nagai, H., Oikawa, H.

Single-phase stoichiometric compounds of TiAl with three different grain sizes of 32, 90 and 170 microns were prepared and the effect of grain size on creep behavior was investigated in...

Creep Characteristics in Ti-50 mol%Al Single Phase Polycrystals. (1998)

Takahashi, T., Nagai, H., Oikawa, H.

Creep characteristics of Ti-50 mol% Al single phase polycrystalline intermetallics are studied in constant stress compressive creep; the material is made up of equiaxed grains whose average diameter...

Sintering Behaviour of Aluminium Oxides Derived from Aluminium Hydroxides with Various Morphologies. (1998)

Nagai, H., Oshima, Y., Hirano, K., Kato, A.

Aluminum hydroxides with various morphologies were synthesized from aluminum sulphate solutions by a homogeneous precipitation method using urea. The synthesized powders consisted of amorphous...

ELECTRONIC STRUCTURE AND MAGNETISM OF METALLIC PEROVSKITE-TYPE MANGANESE COMPOUNDS Mn3MC (M = Zn, Ga, In, Sn) (1988)

Motizuki, K., Nagai, H., Tanimoto, T.

Self-consistent APW band calculations are performed for non-magnetic Mn3MC (M = Zn, Ga, In, Sn) and Mn3Pt. Density of states and Fermi surfaces are shown. A strong hybridization of Mn-3d and Pt-4d...

MAGNETIC AND HYDROGEN ABSORPTION PROPERTIES OF (La1-x Yx)Co5-HYDRIDES (1988)

Fujiwara, K., Ichinose, K., Nagai, H., Tsujimura, A.

The 59Co NMR and magnetization measurement in (La1-xYx) Co5Hy have been performed at 77 K. The magnetizations of these compounds decrease with increasing hydrogen content (y) and are indepedent of...

NMR STUDY OF (Y1-xLax) Mn2X2 (X = Ge, Si) COMPOUNDS (1988)

Ichinose, K., Fujiwara, K., Oyasato, M., Nagai, H., Tsujimura, A.

Nuclear magnetic resonances of 55Mn and 139La nuclei in (Y1-xLax) Mn2X2 (X = Ge, Si) have been observed at 4.2 K in their ferromagnetic state for 0.3 < = x < = 1. The hyperfine fields at these nuclei...

NMR STUDY OF 59Co HYPERFINE FIELD DISTRIBUTIONS IN AMORPHOUS Co-M ALLOYS (M = Si, B) (1988)

Misawa, M., Tanaka, Y., Nagai, H., Tujimura, A.

The mean hyperfine field and the magnetic moment at 77 K per Co atom in amorphous Co-M (M = Si, B) sputtered films decrease with M concentration. The analysis by using a rigid band model shows that...

NMR STUDY OF Nd2(Co1-xTx)14B(T = Mn, Fe) COMPOUNDS (1988)

Ichinose, K., Fujiwara, K., Oyasato, M., Nagai, H., Tsujimura, A.

The 59Co NMR in Nd2 (Co1-xTx)14B(T = Mn, Fe) compounds have been observed at 4.2 K. The hyperfine fields at Co in Nd2 (Co1-xTx)14B compounds increase for T = Fe, and decrease for T = Mn with...

NMR STUDY OF R6Mn23 COMPOUNDS (1988)

Nagai, H., Kojima, K., Yoshie, H.

The 55Mn NMR spectra have been observed under zero and external field up to 50 kOe. The negative field dependence of the resonance frequency is obtained for all compounds and explained by the weak...

ELECTRONIC STRUCTURE AND MAGNETISM OF METALLIC PEROVSKITE-TYPE MANGANESE COMPOUNDS Mn3MC (M = Zn, Ga, In, Sn) (1988)

Motizuki, K., Nagai, H., Tanimoto, T.

Self-consistent APW band calculations are performed for non-magnetic Mn3MC (M = Zn, Ga, In, Sn) and Mn3Pt. Density of states and Fermi surfaces are shown. A strong hybridization of Mn-3d and Pt-4d...

MAGNETIC AND HYDROGEN ABSORPTION PROPERTIES OF (La1-x Yx)Co5-HYDRIDES (1988)

Fujiwara, K., Ichinose, K., Nagai, H., Tsujimura, A.

The 59Co NMR and magnetization measurement in (La1-xYx) Co5Hy have been performed at 77 K. The magnetizations of these compounds decrease with increasing hydrogen content (y) and are indepedent of...

NMR STUDY OF (Y1-xLax) Mn2X2 (X = Ge, Si) COMPOUNDS (1988)

Ichinose, K., Fujiwara, K., Oyasato, M., Nagai, H., Tsujimura, A.

Nuclear magnetic resonances of 55Mn and 139La nuclei in (Y1-xLax) Mn2X2 (X = Ge, Si) have been observed at 4.2 K in their ferromagnetic state for 0.3 < = x < = 1. The hyperfine fields at these nuclei...

NMR STUDY OF 59Co HYPERFINE FIELD DISTRIBUTIONS IN AMORPHOUS Co-M ALLOYS (M = Si, B) (1988)

Misawa, M., Tanaka, Y., Nagai, H., Tujimura, A.

The mean hyperfine field and the magnetic moment at 77 K per Co atom in amorphous Co-M (M = Si, B) sputtered films decrease with M concentration. The analysis by using a rigid band model shows that...

NMR STUDY OF Nd2(Co1-xTx)14B(T = Mn, Fe) COMPOUNDS (1988)

Ichinose, K., Fujiwara, K., Oyasato, M., Nagai, H., Tsujimura, A.

The 59Co NMR in Nd2 (Co1-xTx)14B(T = Mn, Fe) compounds have been observed at 4.2 K. The hyperfine fields at Co in Nd2 (Co1-xTx)14B compounds increase for T = Fe, and decrease for T = Mn with...

NMR STUDY OF R6Mn23 COMPOUNDS (1988)

Nagai, H., Kojima, K., Yoshie, H.

The 55Mn NMR spectra have been observed under zero and external field up to 50 kOe. The negative field dependence of the resonance frequency is obtained for all compounds and explained by the weak...

ELECTRONIC STRUCTURE AND MAGNETISM OF METALLIC PEROVSKITE-TYPE MANGANESE COMPOUNDS Mn3MC (M = Zn, Ga, In, Sn) (1988)

Motizuki, K., Nagai, H., Tanimoto, T.

Self-consistent APW band calculations are performed for non-magnetic Mn3MC (M = Zn, Ga, In, Sn) and Mn3Pt. Density of states and Fermi surfaces are shown. A strong hybridization of Mn-3d and Pt-4d...

MAGNETIC AND HYDROGEN ABSORPTION PROPERTIES OF (La1-x Yx)Co5-HYDRIDES (1988)

Fujiwara, K., Ichinose, K., Nagai, H., Tsujimura, A.

The 59Co NMR and magnetization measurement in (La1-xYx) Co5Hy have been performed at 77 K. The magnetizations of these compounds decrease with increasing hydrogen content (y) and are indepedent of...

NMR STUDY OF (Y1-xLax) Mn2X2 (X = Ge, Si) COMPOUNDS (1988)

Ichinose, K., Fujiwara, K., Oyasato, M., Nagai, H., Tsujimura, A.

Nuclear magnetic resonances of 55Mn and 139La nuclei in (Y1-xLax) Mn2X2 (X = Ge, Si) have been observed at 4.2 K in their ferromagnetic state for 0.3 < = x < = 1. The hyperfine fields at these nuclei...

NMR STUDY OF 59Co HYPERFINE FIELD DISTRIBUTIONS IN AMORPHOUS Co-M ALLOYS (M = Si, B) (1988)

Misawa, M., Tanaka, Y., Nagai, H., Tujimura, A.

The mean hyperfine field and the magnetic moment at 77 K per Co atom in amorphous Co-M (M = Si, B) sputtered films decrease with M concentration. The analysis by using a rigid band model shows that...

NMR STUDY OF Nd2(Co1-xTx)14B(T = Mn, Fe) COMPOUNDS (1988)

Ichinose, K., Fujiwara, K., Oyasato, M., Nagai, H., Tsujimura, A.

The 59Co NMR in Nd2 (Co1-xTx)14B(T = Mn, Fe) compounds have been observed at 4.2 K. The hyperfine fields at Co in Nd2 (Co1-xTx)14B compounds increase for T = Fe, and decrease for T = Mn with...

NMR STUDY OF R6Mn23 COMPOUNDS (1988)

Nagai, H., Kojima, K., Yoshie, H.

The 55Mn NMR spectra have been observed under zero and external field up to 50 kOe. The negative field dependence of the resonance frequency is obtained for all compounds and explained by the weak...

A distinct segment of the sigma 32 polypeptide is involved in DnaK-mediated negative control of the heat shock response in Escherichia coli.

Nagai, H, Yuzawa, H, Kanemori, M, Yura, T

Induction of heat shock proteins in Escherichia coli is caused by a transient increase in the cellular level of sigma 32 (the rpoH gene product), a protein required for transcription of heat shock...

Interplay of two cis-acting mRNA regions in translational control of sigma 32 synthesis during the heat shock response of Escherichia coli.

Nagai, H, Yuzawa, H, Yura, T

When Escherichia coli cells are transferred from 30 degrees C to 42 degrees C, transcription from specific promoters recognized by RNA polymerase containing sigma 32 (the rpoH gene product) is...

Cloning and sequencing of the 7 alpha-hydroxysteroid dehydrogenase gene from Escherichia coli HB101 and characterization of the expressed enzyme.

Yoshimoto, T, Higashi, H, Kanatani, A, Lin, X S, Nagai, H, Oyama, H, ...

The 7 alpha-hydroxysteroid dehydrogenase (EC 1.1.1.159) gene from Escherichia coli HB101 was cloned and expressed in E. coli DH1. The hybrid plasmid pSD1, with a 2.8-kbp insert of chromosomal DNA at...

A mutation that enhances synthesis of sigma 32 and suppresses temperature-sensitive growth of the rpoH15 mutant of Escherichia coli.

Yano, R, Nagai, H, Shiba, K, Yura, T

The rpoH15 mutant cannot grow at or above 34 degrees C, because it produces an altered sigma 32 protein that is largely deficient in the transcription of the heat shock genes. Extragenic suppressor...

Transcriptional regulation of the heat shock regulatory gene rpoH in Escherichia coli: involvement of a novel catabolite-sensitive promoter.

Nagai, H, Yano, R, Erickson, J W, Yura, T

A catabolite-sensitive promoter was found to be involved in transcription of the heat shock regulatory gene rpoH encoding the sigma 32 protein. Expression of lacZ from the operon fusion, rpoHp-lacZ,...

Heat induction of sigma 32 synthesis mediated by mRNA secondary structure: a primary step of the heat shock response in Escherichia coli.

Yuzawa, H, Nagai, H, Mori, H, Yura, T

Induction of heat shock proteins following transfer of E. coli cells from 30 degrees C to 42 degrees C depends on rapid accumulation of sigma 32, a minor sigma factor specifically required for...

Reinvestigation of deoxyribonucleoside phosphorothioites: synthesis and properties of deoxyribonucleoside-3' dimethyl phosphites.

Nagai, H, Fujiwara, T, Fujii, M, Sekine, M, Hata, T

Further investigation of the synthesis of deoxyribonucleoside-3' (t-butyl) O-(2-cyanoethyl) phosphorothioites as monomer building units for the phosphorothioite approach has led us to conclude that...

Inhibition of specific binding of okadaic acid to protein phosphatase 2A by microcystin-LR, calyculin-A and tautomycin: method of analysis of interactions of tight-binding ligands with target protein.

Takai, A, Sasaki, K, Nagai, H, Mieskes, G, Isobe, M, Isono, K, ...

Several groups have reported that okadaic acid (OA) and some other tight-binding protein phosphatase inhibitors including microcystin-LR (MCLR), calyculin-A and tautomycin prevent each other from...

Systematic sequencing of the Escherichia coli genome: analysis of the 0-2.4 min region.

Yura, T, Mori, H, Nagai, H, Nagata, T, Ishihama, A, Fujita, N, ...

A contiguous 111,402-nucleotide sequence corresponding to the 0 to 2.4 min region of the E. coli chromosome was determined as a first step to complete structural analysis of the genome. The resulting...

Study of surgical anatomy for duodenum-preserving resection of the head of the pancreas.

Kimura, W, Nagai, H

OBJECTIVE: The authors precisely examined the topography of the duodenum, pancreas, bile duct, and supplying vessels from the perspective of performing duodenum-preserving resection of the pancreatic...

Pancreatoduodenectomy with preservation of the pylorus and gastroduodenal artery.

Nagai, H, Ohki, J, Kondo, Y, Yasuda, T, Kasahara, K, Kanazawa, K

OBJECTIVE: The authors evaluated the rationale for and feasibility of gastroduodenal artery preservation in pylorus-preserving pancreatoduodenectomy (PPPD) for periampullary cancer in which the...

Lymphatic and local spread of T1 and T2 pancreatic cancer. A study of autopsy material.

Nagai, H, Kuroda, A, Morioka, Y

Eight autopsy cases of pancreatic cancer (duct cell adenocarcinoma) with T1 and T2 primary tumors were studied histologically to examine the exact extent of lymphatic and local spread. Six of them...

A distinct segment of the sigma 32 polypeptide is involved in DnaK-mediated negative control of the heat shock response in Escherichia coli.

Nagai, H, Yuzawa, H, Kanemori, M, Yura, T

Induction of heat shock proteins in Escherichia coli is caused by a transient increase in the cellular level of sigma 32 (the rpoH gene product), a protein required for transcription of heat shock...

Interplay of two cis-acting mRNA regions in translational control of sigma 32 synthesis during the heat shock response of Escherichia coli.

Nagai, H, Yuzawa, H, Yura, T

When Escherichia coli cells are transferred from 30 degrees C to 42 degrees C, transcription from specific promoters recognized by RNA polymerase containing sigma 32 (the rpoH gene product) is...

Cloning and sequencing of the 7 alpha-hydroxysteroid dehydrogenase gene from Escherichia coli HB101 and characterization of the expressed enzyme.

Yoshimoto, T, Higashi, H, Kanatani, A, Lin, X S, Nagai, H, Oyama, H, ...

The 7 alpha-hydroxysteroid dehydrogenase (EC 1.1.1.159) gene from Escherichia coli HB101 was cloned and expressed in E. coli DH1. The hybrid plasmid pSD1, with a 2.8-kbp insert of chromosomal DNA at...

A mutation that enhances synthesis of sigma 32 and suppresses temperature-sensitive growth of the rpoH15 mutant of Escherichia coli.

Yano, R, Nagai, H, Shiba, K, Yura, T

The rpoH15 mutant cannot grow at or above 34 degrees C, because it produces an altered sigma 32 protein that is largely deficient in the transcription of the heat shock genes. Extragenic suppressor...

Transcriptional regulation of the heat shock regulatory gene rpoH in Escherichia coli: involvement of a novel catabolite-sensitive promoter.

Nagai, H, Yano, R, Erickson, J W, Yura, T

A catabolite-sensitive promoter was found to be involved in transcription of the heat shock regulatory gene rpoH encoding the sigma 32 protein. Expression of lacZ from the operon fusion, rpoHp-lacZ,...

Heat induction of sigma 32 synthesis mediated by mRNA secondary structure: a primary step of the heat shock response in Escherichia coli.

Yuzawa, H, Nagai, H, Mori, H, Yura, T

Induction of heat shock proteins following transfer of E. coli cells from 30 degrees C to 42 degrees C depends on rapid accumulation of sigma 32, a minor sigma factor specifically required for...

Systematic sequencing of the Escherichia coli genome: analysis of the 0-2.4 min region.

Yura, T, Mori, H, Nagai, H, Nagata, T, Ishihama, A, Fujita, N, ...

A contiguous 111,402-nucleotide sequence corresponding to the 0 to 2.4 min region of the E. coli chromosome was determined as a first step to complete structural analysis of the genome. The resulting...

Reinvestigation of deoxyribonucleoside phosphorothioites: synthesis and properties of deoxyribonucleoside-3' dimethyl phosphites.

Nagai, H, Fujiwara, T, Fujii, M, Sekine, M, Hata, T

Further investigation of the synthesis of deoxyribonucleoside-3' (t-butyl) O-(2-cyanoethyl) phosphorothioites as monomer building units for the phosphorothioite approach has led us to conclude that...

Inhibition of specific binding of okadaic acid to protein phosphatase 2A by microcystin-LR, calyculin-A and tautomycin: method of analysis of interactions of tight-binding ligands with target protein.

Takai, A, Sasaki, K, Nagai, H, Mieskes, G, Isobe, M, Isono, K, ...

Several groups have reported that okadaic acid (OA) and some other tight-binding protein phosphatase inhibitors including microcystin-LR (MCLR), calyculin-A and tautomycin prevent each other from...

Study of surgical anatomy for duodenum-preserving resection of the head of the pancreas.

Kimura, W, Nagai, H

OBJECTIVE: The authors precisely examined the topography of the duodenum, pancreas, bile duct, and supplying vessels from the perspective of performing duodenum-preserving resection of the pancreatic...

Pancreatoduodenectomy with preservation of the pylorus and gastroduodenal artery.

Nagai, H, Ohki, J, Kondo, Y, Yasuda, T, Kasahara, K, Kanazawa, K

OBJECTIVE: The authors evaluated the rationale for and feasibility of gastroduodenal artery preservation in pylorus-preserving pancreatoduodenectomy (PPPD) for periampullary cancer in which the...

Lymphatic and local spread of T1 and T2 pancreatic cancer. A study of autopsy material.

Nagai, H, Kuroda, A, Morioka, Y

Eight autopsy cases of pancreatic cancer (duct cell adenocarcinoma) with T1 and T2 primary tumors were studied histologically to examine the exact extent of lymphatic and local spread. Six of them...

Different patterns of DNA alterations detected by restriction landmark genomic scanning in heterogeneous prostate carcinomas.

Konishi, N., Hiasa, Y., Nakamura, M., Kitahori, Y., Matsubara, K., Nagai, H.

Alterations in the genomic DNAs of six heterogeneous prostate carcinomas, as well as that of individual and histologically distinct foci within the tumors, were examined using restriction landmark...

Pathogenesis of non-familial colorectal carcinomas with high microsatellite instability

Shitoh, K, Konishi, F, Miyaki, M, Iijima, T, Furukawa, T, Tsukamoto, T, ...

Aims—Microsatellite instability (MSI) was first observed in hereditary non-polyposis colorectal carcinoma (HNPCC) and was subsequently seen in non-familial colorectal carcinoma. The relation...

Intravenous immunoglobulin (IVIG) treatment of experimental colitis induced by dextran sulfate sodium in rats

SHINTANI, N, NAKAJIMA, T, NAKAKUBO, H, NAGAI, H, KAGITANI, Y, TAKIZAWA, H, ...

We investigated the therapeutic effect and immunological action mechanism of IgG in experimental colitis induced by 3% dextran sulfate sodium in rats. Intravenous injection of homologous (rat) IgG...

Effect of murine recombinant interleukin-5 on the cell population in guinea-pig airways.

Iwama, T., Nagai, H., Suda, H., Tsuruoka, N., Koda, A.

1. An intratracheal injection of murine recombinant interleukin 5 (mrIL-5, 2-15 microgram/0.25 ml/animal) induced a dose-dependent increase in the number of macrophages, eosinophils, neutrophils and...

Local T cell subsets in mumps meningitis.

Nagai, H, Morishima, T, Morishima, Y, Isomura, S, Suzuki, S

In the acute phase of mumps meningitis, more than 85% of the cells in cerebrospinal fluid (CSF) were OKT 3 positive, while 76% of the peripheral mononuclear cells (PMN) were OKT 3 positive. The ratio...