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Uemura, Yahiro; Uriyu, Katsuhiro; Funakoshi, Satoshi; Saito, H; Kurokawa, Masami

doi:10.3925/jjtc1958.27.127

Cited by 31 publications

(66 citation statements)

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“…When anti-HBs and anti-LPS globulins used in the present studies were separated individually into electrophoretically slow and fast IgG fractions by an ion exchange chromatography method (Uemura et al 1975), the anti-HBs and anti-LPS activities were distributed mainly in the slow and fast IgG fractions, respectively (data not shown). This suggests that the slow IgG (anti-HBs) and fast IgG (anti-LPS) may have similar stability in acidic conditions.…”

Section: Discussionmentioning

confidence: 68%

Dissociation of aggregated IgG and denaturation of monomeric IgG by acid treatment.

Uemura¹

1983

Tohoku J. Exp. Med.

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Section: Discussionmentioning

confidence: 68%

Dissociation of aggregated IgG and denaturation of monomeric IgG by acid treatment.

Uemura¹

1983

Tohoku J. Exp. Med.

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“…5 shows an early spectrum taken by Uemura & Kato (2000) one night after the discovery, which gave the confirmation of the nova classification. Uemura & Kato (2000) reported that this spectrum suggested characteristics of a fast nova at a few weeks after a maximum and that P Cygni profile was not seen in the Balmer lines. We were able to identify the strongest Hα and Hβ lines and emission lines of N ii, Fe ii, and He i.…”

Section: Spectral Evolutionmentioning

confidence: 59%

“…Following these observations, immediate spectroscopic exposures for the probable nova were made on 2000 April 29.6 (UT) by using a 1.88-m telescope at the Okayama Astrophysical Observatory of National Astronomical Observatory, Japan (Uemura & Kato 2000). The spectra clearly showed a strong Hα emission line with FWHM ∼ 2300 km s −1 and confirmed that it was a nova outburst in slightly evolved stage.…”

Section: Introductionmentioning

confidence: 90%

“…We followed this event photometrically from immediately after the discovery, with intraday time-resolved samplings, and succeeded to detect some minima of eclipses in the light curves. Optical spectra of the object were taken at four epochs in 2000, including the first snapshot by Uemura & Kato (2000), which derived an evolution of the spectral features during this outburst.…”

Section: Introductionmentioning

confidence: 99%

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Detailed optical behavior of the 2000 outburst of the eclipsing recurrent nova CI Aquilae

Matsumoto

Uemura

Katô

et al. 2001

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Abstract. The 2000 outburst of the recurrent nova CI Aql was followed by optical photometry and spectroscopy. Our time-resolved photometry revealed its intraday variations during the outburst. The orbital modulation of the light curve appeared after entering the plateau stage. We found that primary eclipses were ∼0.6 mag in depth, but the profile of the eclipse was significantly different from that in the quiescent phase. The folded orbital light curve was represented by a wide wing of a primary eclipse and it suggests the existence of the accretion disk at the plateau stage. In this outburst, we obtained accurate determination of several minima of primary eclipses, and found that the timings of minima showed a substantial delay compared to the previously reported ephemeris. However, no significant evidence of a change in the orbital period was observed since the discovery of the eclipsing nature of this object. We examined the evolution of optical spectra through the outburst, which reconfirmed the nova nature of this object. A spectrum taken on 2000 October 10 showed the Hα in emission and indicated that the object had not yet reached quiescence. The overall light curve and late-stage spectroscopy have revealed that the plateau is the longest one among recurrent novae.

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“…Many algorithms for analyzing the images have been proposed. These include the cross correlation technique [1,2,3] and particle tracking technique [4].…”

Section: Introductionmentioning

confidence: 99%

New tracking algorithm for particle image velocimetry

Okamoto

Hassan

Schmidl

1995

Experiments in Fluids

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The cross correlation tracking technique is widely used to analyze image data, in Particle Image Velocimetry (PIV). The technique assumes that the fluid motion, within small regions of the flow field, is parallel over short time intervals. However, actual flow fields may have some distorted motion, such as rotation, shear and expansion. Therefore, if the distortion of the flow field is not negligible, the fluid motion can not be tracked well using the cross correlation technique.In this study, a new algorithm for particle tracking, called the Spring Model technique, has been proposed. The algorithm can be applied to flow fields which exhibit characteristics such as rotation, shear and expansion.The algorithm is based on pattern matching of particle clusters between the first and second image. A particle cluster is composed of particles which are assumed to be connected by invisible elastic springs. Depending on the deformation of the cluster pattern (i.e., the particle positions), the invisible springs have some forces. The smallest force pattern in the second image is the most probable pattern match to the correspondent original pattern in the first image. Therefore, by finding the best matches, particle movements can be tracked between the two images. Three-dimensional flow fields can also be reconstructed with this technique.The effectiveness of the Spring Model technique was verified with synthetic data from both a two-dimensional flow and three-dimensional flow. It showed a high degree of accuracy, even for the three-dimensional calculation. The experimental data from a vortex flow field in a cylinder wake was also measured by the Spring model technique.

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Cited by 31 publications

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Dissociation of aggregated IgG and denaturation of monomeric IgG by acid treatment.

Dissociation of aggregated IgG and denaturation of monomeric IgG by acid treatment.

Detailed optical behavior of the 2000 outburst of the eclipsing recurrent nova CI Aquilae

New tracking algorithm for particle image velocimetry

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