Mass functions and photometric binaries in nine open clusters (2008)
Sharma, Saurabh, Pandey, A. K., Ogura, K., Aoki, T., Pandey, Kavita, Sandhu, T. S., ...
Using homogeneous CCD photometric data from the 105-cm Kiso Schmidt telescope covering a 50' x 50' field, we study the mass functions (MFs) of nine open clusters. The ages and Galactocentric...
Stellar contents and star formation in the young open cluster Stock 8 (2008)
Jose, J, Pandey, A. K, Ojha, D. K, Ogura, K, Chen, W. P, Bhatt, B. C, ...
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Stellar contents and star formation in the young star cluster Be 59 (2008)
Pandey, A. K, Sharma, S, Ogura, K, Ojha, D. K, Chen, W. P, Bhatt, B. C, ...
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Stellar contents and star formation in the young open cluster Stock 8 (2007)
Jose, Jessy, Pandey, A. K., Ojha, D. K., Ogura, K., Chen, W. P., Bhatt, B. C., ...
We present $UBVI_c$ CCD photometry of the young open cluster Stock 8 with the aim to study the basic properties and star formation scenario in this region. The radius of the cluster is found to be...
Stellar contents and star formation in the young star cluster Be 59 (2007)
Pandey, A. K., Sharma, Saurabh, Ogura, K., Ojha, D. K., Chen, W. P., Bhatt, B. C., ...
We present $UBVI_C$ CCD photometry of the young open cluster Be 59 with the aim to study the star formation scenario in the cluster. The radial extent of the cluster is found to be $\sim$ 10 arcmin...
Synthesis and properties of 2-(2-pyridyl)-1-azaazulene (2007)
Oda, M, Ogura, K, Thanh, NC, Kishi, S, Kuroda, S, Fujimori, K, ...
Kando, M., Fukuda, Y., Pirozhkov, A. S., Ma, J., Daito, I., ...
Since the advent of chirped pulse amplification1 the peak power of lasers has grown dramatically and opened the new branch of high field science, delivering the focused irradiance, electric fields of...
Age Sequence in Small Clusters Associated with Bright-Rimmed Clouds (2007)
Ogura, K, Chauhan, N, Pandey, A. K, Bhatt, B. C, Ojha, D, Itoh, Y
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Age Sequence in Small Clusters Associated with Bright-Rimmed Clouds (2007)
Ogura, K, Chauhan, N, Pandey, A. K, Bhatt, B. C, Ojha, D. K, Itoh, Y
Bright-rimmed clouds (BRCs) found in H II regions are probable sites of triggered star formation due to compression by ionization/shock fronts, and it is hypothesized that star formation proceeds...
Near-infrared JH photometry of young open cluster Be 59 (2007)
Sharma, S, Ogura, K, Pandey, A. K, Ojha, D. K, Bhatt, B. C
We present near-infrared J H photometry and optical slitless spectroscopy of stars in the field of the young cluster Be 59. The J /(J- H )colour-magnitude diagram of the cluster yields a distance...
The population in the background of open clusters: Tracer of the Norma-Cygnus arm (2006)
Pandey, A. K., Sharma, S., Ogura, K.
We present colour-magnitude diagrams of open clusters, located in the range $112^\circ < l < 252^\circ$, manifesting stellar populations in the background of clusters. Some of the populations are...
Wide Field CCD photometry around nine open clusters (2006)
Sharma, S., Pandey, A. K., Ogura, K., Mito, H., Tarusava, K., Sagar, R.
In this paper we study the evolution of core and corona of nine open clusters using the projected radial density profiles derived from homogeneous CCD photometric data obtained through the 105-cm...
Mori, M., Kando, M., Daito, I., Kotaki, H., Hayashi, Y., Yamazaki, A., ...
The regimes of quasi-mono-energetic electron beam generation were experimentally studied in the sub-relativistic intensity laser plasma interaction. The observed electron acceleration regime is...
A near-infrared study of the NGC 7538 star forming region (2004)
Ojha, D. K., Tamura, M., Nakajima, Y., Fukagawa, M., Sugitani, K., Nagashima, C., ...
We present sub-arcsecond (FWHM ~ 0".7), NIR JHKs-band images and a high sensitivity radio continuum image at 1280 MHz, using SIRIUS on UH 88-inch telescope and GMRT. The NIR survey covers an area of...
Deep near-infrared observations of W3 Main star forming region (2004)
Ojha, D. K., Tamura, M., Nakajima, Y., Fukagawa, M., Sugitani, K., Nagashima, C., ...
We present a deep JHKs-band imaging survey of the W3 Main star forming region, using the near-infrared camera, SIRIUS, mounted on the University of Hawaii 2.2m telescope. The near-infrared survey...
Interstellar extinction in the open clusters towards galactic longitude around 130 degrees (2002)
Pandey, A K, Upadhyay, K, Nakada, Y, Ogura, K
In this paper we present a detailed study of the intra-cluster reddening material in the young open clusters located around $l \sim 130^o$ using colour-excess diagrams and two-colour diagrams. The...
Zhang, Y W, Koyama, T, Ogura, K
The two proteins (GerC1 and GerC3) encoded by the gerC locus of Bacillus subtilis, which has been shown to be involved in vegetative cell growth and spore germination, were identified as dissociable...
Inhibitory effect of oolong tea polyphenols on glycosyltransferases of mutans Streptococci.
Nakahara, K, Kawabata, S, Ono, H, Ogura, K, Tanaka, T, Ooshima, T, ...
Oolong tea extract (OTE) was found to inhibit the water-insoluble glucan-synthesizing enzyme, glucosyltransferase I (GTase-I), of Streptococcus sobrinus 6715. The GTase-inhibitory substance in the...
A novel prenyltransferase from Paracoccus denitrificans.
A new polyprenyltransferase catalysing the formation of Z-double bonds was found and partially purified from extracts of Paracoccus denitrificans. The enzyme catalysed a consecutive condensation of...
Analysis of apoptotic and antiapoptotic signalling pathways induced by Helicobacter pylori
Maeda, S, Yoshida, H, Mitsuno, Y, Hirata, Y, Ogura, K, Shiratori, Y, ...
Background and aims: Although it is reported that Helicobacter pylori induces apoptosis on gastric epithelial cells, the mechanism remains unknown. Antiapoptotic effects generated by H pylori have...
Hiratsuka, A, Tobita, K, Saito, H, Sakamoto, Y, Nakano, H, Ogura, K, ...
In guinea-pig liver cytosol, racemic 4-hydroxy-2(E)-nonenal (HNE), a reactive and highly toxic product released from biomembranes by lipid peroxidation, was detoxified (S)-preferentially by GSH...
Zhang, Y W, Koyama, T, Ogura, K
The two proteins (GerC1 and GerC3) encoded by the gerC locus of Bacillus subtilis, which has been shown to be involved in vegetative cell growth and spore germination, were identified as dissociable...
Inhibitory effect of oolong tea polyphenols on glycosyltransferases of mutans Streptococci.
Nakahara, K, Kawabata, S, Ono, H, Ogura, K, Tanaka, T, Ooshima, T, ...
Oolong tea extract (OTE) was found to inhibit the water-insoluble glucan-synthesizing enzyme, glucosyltransferase I (GTase-I), of Streptococcus sobrinus 6715. The GTase-inhibitory substance in the...
A novel prenyltransferase from Paracoccus denitrificans.
A new polyprenyltransferase catalysing the formation of Z-double bonds was found and partially purified from extracts of Paracoccus denitrificans. The enzyme catalysed a consecutive condensation of...
Analysis of apoptotic and antiapoptotic signalling pathways induced by Helicobacter pylori
Maeda, S, Yoshida, H, Mitsuno, Y, Hirata, Y, Ogura, K, Shiratori, Y, ...
Background and aims: Although it is reported that Helicobacter pylori induces apoptosis on gastric epithelial cells, the mechanism remains unknown. Antiapoptotic effects generated by H pylori have...
Hiratsuka, A, Tobita, K, Saito, H, Sakamoto, Y, Nakano, H, Ogura, K, ...
In guinea-pig liver cytosol, racemic 4-hydroxy-2(E)-nonenal (HNE), a reactive and highly toxic product released from biomembranes by lipid peroxidation, was detoxified (S)-preferentially by GSH...
Maeda, S, Ogura, K, Yoshida, H, Kanai, F, Ikenoue, T, Kato, N, ...
Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo, 7- 3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan
Maeda, S, Yoshida, H, Ogura, K, Kanai, F, Shiratori, Y, Omata, M
Second Department of Internal Medicine, University of Tokyo, Japan
Structure of cag pathogenicity island in Japanese Helicobacter pylori isolates
Maeda, S, Yoshida, H, Ikenoue, T, Ogura, K, Kanai, F, Kato, N, ...
Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan
Mitsuno, Y, Yoshida, H, Maeda, S, Ogura, K, Hirata, Y, Kawabe, T, ...
BACKGROUND AND AIMS—Helicobacter pylori infection induces expression of proinflammatory cytokines such as interleukin (IL)-8 and tumour necrosis factor α (TNF-α) in gastric mucosa, and their...
Analysis of apoptotic and antiapoptotic signalling pathways induced by Helicobacter pylori
Maeda, S, Yoshida, H, Mitsuno, Y, Hirata, Y, Ogura, K, Shiratori, Y, ...
Background and aims: Although it is reported that Helicobacter pylori induces apoptosis on gastric epithelial cells, the mechanism remains unknown. Antiapoptotic effects generated by H pylori have...