14 Result(s)

Article

Characterization of vitamin B₁₂ compounds from traditional fermented Japanese seafoods

This study identified vitamin B₁₂ compounds in traditional fermented Japanese seafoods, such as heshiko made with a mackerel, kusaya made with a flying fish, Akazukuri-shiokara made with a squid, and funazushi ma...

Tamami Yamanaka, Chisa Ishikura, Kyohei Koseki, Tomohiro Bito… in Fisheries Science (2024)

Article

Characterization of vitamin B₁₂ compounds from commercially available fish roe products

Although fish roes (or the egg-laden ovary) are seafood products with high nutritional value and are considered abundant in vitamins including vitamin B₁₂, nevertheless, the detailed properties of vitamin B₁₂ hav...

Tamami Yamanaka, Mika Namura, Kyohei Koseki, Tomohiro Bito… in Fisheries Science (2022)

Article

Determination and characterization of vitamin B₁₂ in the muscles and head innards of edible shrimp

We determined the vitamin B₁₂ content in both the muscles and head innards of various shrimp species [Argis lar (Owen, 1839); Togezako shrimp, Argis toyamaensis (Yokoya, 1933); Pandalopsis japonica, Balss, 1914;

Naho Okamoto, Natsumi Hamaguchi, Yukihiro Umebayashi, Shigeo Takenaka… in Fisheries Science (2020)

Article

Microstructure Evolution in Cu-Pd-Ag Alloy Wires During Heat Treatment

Cu-Pd-Ag alloy wires with a relatively low Ag content are used widely in electronics. This alloy is usually subjected to age hardening to increase its strength. However, the alloy microstructure that results w...

Chihiro Iwamoto, Naoki Adachi, Fumio Watanabe… in Metallurgical and Materials Transactions A (2018)

Article

Characterization of vitamin B₁₂ compounds from marine foods

Vitamin B₁₂ is synthesized by only certain bacteria and archaea but not by animals or plants. In marine environments, bacterial vitamin B₁₂ is transferred and concentrated into fish and shellfish bodies by plankt...

Tomohiro Bito, Yuri Tanioka, Fumio Watanabe in Fisheries Science (2018)

Article

Determination and characterization of vitamin B₁₂ compounds in edible sea snails, ivory shell Babylonia japonica and turban shell Turdo Batillus cornutus

In this study, we characterized and quantified vitamin B₁₂ compounds in popular edible snails Babylonia japonica and Turdo Batillus cornutus using a microbiological assay based on Lactobacillus delbrueckii subsp....

Fei Teng, Yuri Tanioka, Natsumi Hamaguchi, Tomohiro Bito… in Fisheries Science (2015)

Article

Performance of HSC columns under severe cyclic loading

Experimental and analytical results of seismic investigation of high strength reinforced concrete columns performance is summarized in this paper. Twelve cantilever columns with different sizes and concrete co...

Hakim Bechtoula, Susumu Kono, Fumio Watanabe… in Bulletin of Earthquake Engineering (2015)

Article

Identification of vitamin B₁₂ and pseudovitamin B₁₂ from various edible shellfish using liquid chromatography–electrospray ionization/tandem mass spectrometry

In this study, the vitamin B₁₂ contents were analyzed in the edible portions of various shellfish (bivalves and snails). High vitamin B₁₂ contents (30.5–53.3 μg/100 g wet weight) were detected in mussels, surf cl...

Yuri Tanioka, Shigeo Takenaka, Tadasu Furusho, Yukinori Yabuta… in Fisheries Science (2014)

Article

Miniaturized HPTLC of Vitamin B₁₂ Compounds in Foods

High-performance thin-layer chromatography (HPTLC) is a separation technique commonly used to identify and quantify compounds in chemical mixtures. Preliminary experiments indicated that Lichrospher silica gel...

Tomohiro Bito, Yukinori Yabuta, Fumio Watanabe in Chromatographia (2013)

Article

Characterization of vitamin B₁₂ compounds from the brackish-water bivalve Corbicula japonica

In Lake Togo (Tottori prefecture, Japan), the vitamin B₁₂ content of the brackish-water bivalve Corbicula japonica remained high (17.3–22.5 μg/100 g wet weight of the edible portion) throughout the year, except d...

Yukio Ishihara, Kazumi Ueta, Tomohiro Bito, Shigeo Takenaka… in Fisheries Science (2013)

Article

Impact of EBAS annealing on sheet resistance reduction for Al-implanted 4H-SiC(0001)

In this paper, we demonstrate that high temperature and short time EBAS annealing is effective to obtain low sheet resistance without surface roughening in heavily Al-implanted 4H-SiC (0001) samples (Al concen...

Masami Shibagaki, Akihiro Egami, Akira Kumagai… in MRS Online Proceedings Library (2011)

Article

Characterization of methylmalonyl-CoA mutase involved in the propionate photoassimilation of Euglena gracilis Z

Significant accumulation of the methylmalonyl-CoA mutase apoenzyme was observed in the photosynthetic flagellate Euglena gracilis Z at the end of the logarithmic growth phase. The apoenzyme was converted to a hol...

Emi Miyamoto, Yuri Tanioka, Ayako Nishizawa-Yokoi… in Archives of Microbiology (2010)

Article

Purification and characterization of homodimeric methylmalonyl-CoA mutase from Sinorhizobium meliloti

High activity (>60 munit/mg protein) of 5′-deoxyadenosylcobalamin-dependent methylmalonyl-CoA mutase (EC 5.4.99.2) was constantly found during growth of a strain of the root-nodule-forming bacterium Sinorhizobium...

Emi Miyamoto, Fumio Watanabe, Trevor C. Charles, Ryoichi Yamaji… in Archives of Microbiology (2003)

Article

Editorial

Paramvir Bahl, Hamid Aghvami, Fumio Watanabe in Mobile Networks and Applications (1998)