A5100762651- Toxic Organic Pollutants Impact
- Force Microscopy Techniques and Applications
- Electrochemical Analysis and Applications
- Glycosylation and Glycoproteins Research
- Spectroscopy and Quantum Chemical Studies
- Air Quality and Health Impacts
- RNA and protein synthesis mechanisms
- Coccidia and coccidiosis research
- Analytical Chemistry and Sensors
- Invertebrate Immune Response Mechanisms
- Renal and related cancers
- Mesoporous Materials and Catalysis
- Photosynthetic Processes and Mechanisms
- Animal Nutrition and Physiology
- Renal cell carcinoma treatment
- Zeolite Catalysis and Synthesis
- Galectins and Cancer Biology
- Supramolecular Self-Assembly in Materials
- Advanced Electron Microscopy Techniques and Applications
- Photochemistry and Electron Transfer Studies
- Paleontology and Stratigraphy of Fossils
- Atmospheric chemistry and aerosols
- Carcinogens and Genotoxicity Assessment
- Chemical Synthesis and Characterization
- Nanofabrication and Lithography Techniques
Tokyo University of Pharmacy and Life Sciences
2006-2020
Osaka University
2001-2016
National Institute of Advanced Industrial Science and Technology
2016
Universitat de les Illes Balears
2016
Nanomaterials Research (United States)
2016
Sapporo Science Center
2016
Kwansei Gakuin University
2010
Protein Research Foundation
2007
Tohoku University
1994-2006
Taisho Pharmaceutical (Japan)
2006
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTScanning Tunneling Microscope Tip-Induced Anodization for Nanofabrication of TitaniumHiroyuki Sugimura, Tatsuya Uchida, Noboru Kitamura, and Hiroshi MasuharaCite this: J. Phys. Chem. 1994, 98, 16, 4352–4357Publication Date (Print):April 1, 1994Publication History Published online1 May 2002Published inissue 1 April 1994https://pubs.acs.org/doi/10.1021/j100067a023https://doi.org/10.1021/j100067a023research-articleACS PublicationsRequest reuse...
A scanning tunneling microscope was employed for tip-induced anodization of titanium (Ti) surfaces. Spatial resolution fabricated patterns remarkably affected by the tip shape and humidity in atmosphere. The amount adsorbed water on Ti surface determined has a key role controlling resolution, becomes worse with increasing humidity. Under optimized conditions, successfully achieved spatial 30 nm.
A titanium (Ti) surface was arbitrarily oxidized by a scanning tunneling microscope (STM). Oxidation of the Ti induced an STM tip with sample bias more than +3 V, and dot or line pattern oxide fabricated on spatial resolution 70 nm. The results were discussed in terms tip-induced anodization due to water adsorbed surface.
Compound class specific radiocarbon analysis (CCSRA) was performed for polycyclic aromatic hydrocarbons (PAHs) associated with airborne particulate matter (APM) diameter <10 μm (PM10) and <1.1 (PM1.1) collected from a residential area of suburban Tokyo, Japan, seasonal particle-size variations were investigated. Source diagnostic isomer pair ratios indicated mixed contributions petroleum combustion biomass coal to the PAHs in APM. The Δ14C−PAHs APM, ranging −787 −514‰, dominance fossil fuel...
CEL-III is a Ca(2+)-dependent hemolytic lectin, isolated from the marine invertebrate Cucumaria echinata. The three-dimensional structure of CEL-III/GalNAc and CEL-III/methyl alpha-galactoside complexes was solved by x-ray crystallographic analysis. In these complexes, five carbohydrate molecules were found to be bound two carbohydrate-binding domains (domains 1 2) located in N-terminal 2/3 portion polypeptide that contained beta-trefoil folds similar ricin B-chain. 3-OH 4-OH coordinated...
It is suggested, based on published and experimental data, that inter- intra-specific cell contact plays an important role in the life cycle of some dinoflagellate species.
Structural information on rhodamine dyes adsorbed at heptane/water and hydrophobized silica/water interfaces are obtained by in situ second harmonic generation (SHG) spectroscopy. The SHG spectra provide spectroscopic evidence that the molecular association occurs both a different manner depending their interfacial coverage. At interface, an "in-plane associate" which electronic transition dipoles of each monomer arranged parallel to one another appears as sole species present. number units...
To propose new molecular markers for tire-wear emissions, four dihydroresin acids, that is, 8-isopimaren-18-oic acid (I), 8-pimaren-18-oic (II), 13β(H)-abieten-18-oic (III), and 13α(H)-abiet-8-en-18-oic (IV), were identified investigated source specificities, distributions, environmental stabilities. The absence of I-IV in natural sources the linear correlations between acids with different skeletons tires samples demonstrated are specific synthetic rubbers. ratio III + IV to sum plus...
Nanometer scale oxide patterns were fabricated on titanium (Ti) surfaces the basis of scanning tunneling microscope (STM) tip-induced anodization. The spatial resolution method was limited to approximately 20 nm, owing surface roughness Ti film used. Chemical analyses by Auger electron spectroscopy proved that chemical composition pattern dioxide (TiO2), and thickness certainly thicker than native unmodified area. A novel Ti-metal resist process for nanolithography based STM anodization...
Alkali metal ion recognition with [2-hydroxy-5-(4-nitrophenylazo)phenyl]-methyl-15-crown-5 (azoprobe 1) at the heptane/water interface was investigated by in situ second harmonic generation (SHG) spectroscopy. Upon addition of alkali ions, (SH) intensity azoprobe 1 found to increase selectively. The observed selectivity K+ > Na+ Li+ TMA+ essentially same order as that extractability for ions 1,2-dichloroethane/water extraction. Although very low system, SH suggested complex could distribute...
Immunization of chickens was attempted with low levels Eimeria tenella oocysts (50 per day) over the first 1 or 2 weeks life--the "trickle infection" (TI) method. When were immunized by TI at 0-13 days age, no cecal lesions and a reduced number in ceca observed after challenge 17 age. 0-6 age conferred better protection against E. than did 7-13 days. However, almost all these chickens. These findings indicated that for (0-13 age) provided immunity week (0-6 age).
Segments of DNA are deleted from recombinant cosmid DNAs with high frequency during propagation in standard recA Escherichia coli hosts. An attempt has been made to derive an appropriate strain E. coli, suitable for cloning, which such deletions do not occur. We examined the effects a series host recombinational mutations on deletion process, using six independent cosmids that carry inserts mouse, Chinese hamster, or human DNA. Various cells carrying were cultured serially liquid medium, and...
Freezing is usually used for preservation and storage of biological samples; however, this process may have some adverse effects such as cell membrane damage. Aquaporin (AQP), a water channel protein, has been suggested to play roles cryopreservation although its molecular mechanism remains unclear. Here we show that damage caused by ultra-quick freezing rescued the expression AQP4. We next examine if AQP combined with can be select cells efficiently under conditions where most are died. CHO...
2011年の東日本大震災に伴う、東京電力福島第一原子力発電所からの放射性物質漏えい事故に伴い、産総研では除染技術の研究開発を進めた。その課題の緊急性から、研究開発は極めて短期間に達成することが求められた。例として、プルシアンブルー(PB)ナノ粒子を利用した汚染焼却灰の除染技術を挙げ、その推進方法を紹介する。PBナノ粒子の構造制御による放射性セシウム吸着材としての最適化、材料を粒状体等製品として利用できる形にする成型、汚染灰からの放射性セシウムの抽出法等、技術全体を一貫して開発した。この全体的な開発の短期的な実現は、材料研究者、計算科学研究者、地質研究者等に加え、各企業との一体的な連携により達成できた。
The coccolithophorids have calcified scales called coccoliths on their surface that include abundant acid polysaccharides. To determine the localization and associative strength of polysaccharides Ph-PS-1, -2, -3 incoccoliths Pleurochrysis haptonemofera, we analyzed extracted with urea from partially decalcified coccoliths. On treatment with8.0 Murea at pH8.0 inboiling water, Ph-PS-2 was not extracted, but parts Ph-PS-1 were without crystal morphology being affected. When various pHs (pH 8.0...
The accident at the Fukushima Daiichi Nuclear Power Station in 2011 spurred rapid research and development AIST for radioactive cesium decontamination systems. In this paper, we introduce of an ash-decontamination technology that uses Prussian blue (PB) nanoparticles. We developed all aspects system using a combination fundamental technologies, which included optimization PB nanoparticle structure use as adsorbent, composite fabrication granules extraction from contaminated ash. All were...