Search Results - (Author, Cooperation:A. Yamakawa)
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1Latest Papers from Table of Contents or Articles in PressO. P. Popova ; P. Jenniskens ; V. Emel'yanenko ; A. Kartashova ; E. Biryukov ; S. Khaibrakhmanov ; V. Shuvalov ; Y. Rybnov ; A. Dudorov ; V. I. Grokhovsky ; D. D. Badyukov ; Q. Z. Yin ; P. S. Gural ; J. Albers ; M. Granvik ; L. G. Evers ; J. Kuiper ; V. Kharlamov ; A. Solovyov ; Y. S. Rusakov ; S. Korotkiy ; I. Serdyuk ; A. V. Korochantsev ; M. Y. Larionov ; D. Glazachev ; A. E. Mayer ; G. Gisler ; S. V. Gladkovsky ; J. Wimpenny ; M. E. Sanborn ; A. Yamakawa ; K. L. Verosub ; D. J. Rowland ; S. Roeske ; N. W. Botto ; J. M. Friedrich ; M. E. Zolensky ; L. Le ; D. Ross ; K. Ziegler ; T. Nakamura ; I. Ahn ; J. I. Lee ; Q. Zhou ; X. H. Li ; Q. L. Li ; Y. Liu ; G. Q. Tang ; T. Hiroi ; D. Sears ; I. A. Weinstein ; A. S. Vokhmintsev ; A. V. Ishchenko ; P. Schmitt-Kopplin ; N. Hertkorn ; K. Nagao ; M. K. Haba ; M. Komatsu ; T. Mikouchi
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-11-10Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: *Accidents ; *Air ; *Explosions ; *Meteoroids ; RussiaPublished by: -
2Latest Papers from Table of Contents or Articles in PressP. Jenniskens ; M. D. Fries ; Q. Z. Yin ; M. Zolensky ; A. N. Krot ; S. A. Sandford ; D. Sears ; R. Beauford ; D. S. Ebel ; J. M. Friedrich ; K. Nagashima ; J. Wimpenny ; A. Yamakawa ; K. Nishiizumi ; Y. Hamajima ; M. W. Caffee ; K. C. Welten ; M. Laubenstein ; A. M. Davis ; S. B. Simon ; P. R. Heck ; E. D. Young ; I. E. Kohl ; M. H. Thiemens ; M. H. Nunn ; T. Mikouchi ; K. Hagiya ; K. Ohsumi ; T. A. Cahill ; J. A. Lawton ; D. Barnes ; A. Steele ; P. Rochette ; K. L. Verosub ; J. Gattacceca ; G. Cooper ; D. P. Glavin ; A. S. Burton ; J. P. Dworkin ; J. E. Elsila ; S. Pizzarello ; R. Ogliore ; P. Schmitt-Kopplin ; M. Harir ; N. Hertkorn ; A. Verchovsky ; M. Grady ; K. Nagao ; R. Okazaki ; H. Takechi ; T. Hiroi ; K. Smith ; E. A. Silber ; P. G. Brown ; J. Albers ; D. Klotz ; M. Hankey ; R. Matson ; J. A. Fries ; R. J. Walker ; I. Puchtel ; C. T. Lee ; M. E. Erdman ; G. R. Eppich ; S. Roeske ; Z. Gabelica ; M. Lerche ; M. Nuevo ; B. Girten ; S. P. Worden
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-12-22Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
3Articles: DFG German National LicensesAzuma, T. ; Kato, S. ; Zhou, W. ; Yamazaki, S. ; Yamakawa, A. ; Ohtani, M. ; Fujiwara, S. ; Minoura, T. ; Iinuma, K. ; Kato, T.
Oxford, UK : Blackwell Publishing Ltd
Published 2004Staff ViewISSN: 1365-2036Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Background : Helicobacter pylori infection is generally acquired in childhood and persists as an asymptomatic infection for decades in most infected individuals. Only a minority develops a clinical outcome even in childhood, such as peptic ulcer. It has been reported that H. pylori infection with the type I strain, which expresses the VacA and CagA antigen, is associated with peptic ulcer.Aim : We examined the diversity of vacA and cagA genes in isolates obtained from Japanese paediatric patients with peptic ulcer or chronic gastritis to investigate the relationship between genetic diversity and clinical outcome.Methods : The diversity of vacA and cagA genes was investigated by PCR and sequence analysis in 30 isolates obtained from Japanese paediatric patients with peptic ulcer (eight strains) or chronic gastritis (22 strains).Results : All isolates from Japanese children were cagA-positive strains. Twenty-six strains (86.7%) had East Asian type CagA, and 4 (13.3%) had Western type CagA. The predominant vacA genotype was s1c/m1b (22/30, 73.3%). There was no significant association between the diversity of cagA and vacA genes and clinical outcome. All four children infected with Western CagA strain had a history of overseas travel or residence.Conclusion : The predominant genotype of H. pylori in Japanese children is East Asian CagA and vacA s1c/m1b genotype, regardless of clinical outcome. Japanese H. pylori strains are homogeneously of the East Asian type; however, Western strains can be introduced into Japan concomitant with host movement from foreign countries in childhood.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesAzuma, T. ; Yamazaki, S. ; Yamakawa, A. ; Ito, Y. ; Ohtani, M. ; Dojo, M. ; Yamazaki, Y. ; Higashi, H. ; Hatakeyama, M.
Oxford, UK : Blackwell Publishing Ltd
Published 2003Staff ViewISSN: 1365-2036Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Background : The CagA protein of Helicobacter pylori is directly injected from the bacteria into cells via the bacterial type IV secretion system and undergoes tyrosine phosphorylation in the gastric epithelial cells. Translocated CagA forms a physical complex with the SRC homology 2 domain (SH2)-containing tyrosine phosphatase SHP-2, which plays an important role in mitogenic signal transduction in the host cells.Aim : We examined the effect of eradication therapy on the signal transduction pathway of gastric epithelial cells induced by the CagA protein of H. pylori.Methods : Gastric biopsy samples were obtained from 20 H. pylori-positive atrophic gastritis patients before, and 3 months after, H. pylori infection eradication therapy, and subjected to immunoblot analysis to detect tyrosine phosphorylated CagA protein and CagA co-immunoprecipitated endogenous SHP-2.Results : Tyrosine phosphorylated CagA protein and CagA co-immunoprecipitated endogenous SHP-2 were detected in the gastric mucosa from H. pylori-positive atrophic gastritis patients. All H. pylori strains from these patients were cagA-positive type I strains. After curing H. pylori infection, the tyrosine phosphorylated CagA protein and CagA co-immunoprecipitated endogenous SHP-2 disappeared from the gastric mucosa.Conclusion : The cure of infection reduces the stimulated signal transduction of gastric epithelial cells by the translocated CagA protein of H. pylori, and may confer a beneficial effect on the reduction of cancer risk.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 0006-291XKeywords: [abr] DG; diacylglycerol ; [abr] EGTA; ethyleneglycol bis(β-aminoethyl ; [abr] IP"3; inositol 1,4,5-trisphosphate ; [abr] OAG; 1-oleoyl-2-acetylglycerol ; [abr] PI; phosphatidylinositol ; [abr] PIP"2; phosphatidylinositol 4,5-bisphosphate ; [abr] PMSF; phenylmethylsulfonylfluoride ; [abr] TPA; 12-O-tetradecanoyl phorbol 13-acetate ; [abr] fMLP; formylmethionyl-leucyl-phenylalanineSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 0006-291XKeywords: [abr] DG; diacylglycerol ; [abr] EGTA; ethyleneglycol bis(β-aminoethyl ; [abr] IP"3; inositol 1,4,5-trisphosphate ; [abr] OAG; 1-oleoyl-2-acetylglycerol ; [abr] PI; phosphatidylinositol ; [abr] PIP"2; phosphatidylinositol 4,5-bisphosphate ; [abr] PMSF; phenylmethylsulfonylfluoride ; [abr] TPA; 12-O-tetradecanoyl phorbol 13-acetate ; [abr] fMLP; formylmethionyl-leucyl-phenylalanineSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1573-4803Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract To analyse the magnitude and range of lattice distortion which is responsible for the low thermal conductivity in aluminium nitride (AIN) crystal grains, the higher order laue zone (HOLZ) pattern of transmission electron microscopy was used. The HOLZ patterns obtained from various positions in the AIN crystal grain show that the AIN crystal lattice is distorted in the vicinity of the grain-boundary phase, and the magnitude of lattice distortion becomes large as it approaches the grain-boundary phase. Also, the range of distortion extends to approximately 300 nm from the grain-boundary phase.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 1573-4803Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract The growth of a zinc aluminate layer on the surfaces normal to the various crystal axes of an alumina single crystal was determined and the microstructure of the reaction layer observed. The microstructure of the thermally etched reaction layer showed in the grain structure that the reaction proceeded by the counter diffusion of cations as proposed by Wagner. The diffusion constant controlling the growth of the reaction layer was calculated. The diffusion constant showed a high activation energy of c.a. 400 kJ mol−1 which corresponded to the highest group of that of diffusion controlled zinc aluminate formation from zinc oxide and alumina of various physical natures. The high activation energy is also evidence of the counter diffusion of cations.Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 1573-4803Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract The growth of a zinc aluminate layer on the surfaces normal to the various crystal axes of an alumina single crystal was determined and the microstructure of the reaction layer observed. The microstructure of the thermally etched reaction layer showed in the grain structure that the reaction proceeded by the counter diffusion of cations as proposed by Wagner. The diffusion constant controlling the growth of the reaction layer was calculated. The diffusion constant showed a high activation energy of c.a. 400 kJ mol−1 which corresponded to the highest group of that of diffusion controlled zinc aluminate formation from zinc oxide and alumina of various physical natures. The high activation energy is also evidence of the counter diffusion of cations.Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 1588-2780Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyEnergy, Environment Protection, Nuclear Power EngineeringNotes: Abstract Uranium in Japanese tobacco leaves and in Japanese human hair was determined by the fission track method. It was found that the uranium content in smokers' hair was higher than that in non-smokers' one and a part of uranium was lost from tobacco leaves by ashing at 500–700 °C. These two results suggest that uranium would be inhaled through smoking.Type of Medium: Electronic ResourceURL: