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On Integrability Conditions of Almost Generalized Hopf Structures
Toyoko Kashiwada KYUNGPOOK UNIVERSITY 1999 Kyungpook mathematical journal Vol.39 No.1
An almost generalized Hopf structure is an almost Hermitian structure whose metric is locally conformal to an almost Kähler one. In this paper, we discuss integrability conditions of its almost complex structure : An integrability condition is obtained and it is applied to some classes of almost generalized Hopf manifolds.
Super-multiview windshield display for driving assistance
Urano, Yohei,Kashiwada, Shinji,Ando, Hiroshi,Nakamura, Koji,Takaki, Yasuhiro The Korean Infomation Display Society 2011 Journal of information display Vol.12 No.1
A three-dimensional windshield display (3D-WSD) can present driving information at the same depth as the objects in the outside scene. Herein, a super-multiview 3D-WSD is proposed because the super-multiview display technique provides smooth motion parallax. Motion parallax is the only physiological cue for perceiving the depth of a 3D image displayed at a far distance, which cannot be perceived by vergence and binocular parallax. A prototype system with 36 views was constructed, and the discontinuity of motion parallax and accuracy of depth perception were evaluated.
Super-multiview windshield display for driving assistance
Yohei Urano,Shinji Kashiwada,Hiroshi Ando,Koji Nakamura,Yasuhiro Takaki 한국정보디스플레이학회 2011 Journal of information display Vol.12 No.1
A three-dimensional windshield display (3D-WSD) can present driving information at the same depth as the objects in the outside scene. Herein, a super-multiview 3D-WSD is proposed because the super-multiview display technique provides smooth motion parallax. Motion parallax is the only physiological cue for perceiving the depth of a 3D image displayed at a far distance, which cannot be perceived by vergence and binocular parallax. A prototype system with 36 views was constructed, and the discontinuity of motion parallax and accuracy of depth perception were evaluated.
Atomic Force Microscopic Study of Chitinase Binding onto Chitin and Cellulose Surfaces
Kikkawa, Yoshihiro,Fukuda, Masato,Kimura, Tomoya,Kashiwada, Ayumi,Matsuda, Kiyomi,Kanesato, Masatoshi,Wada, Masahisa,Imanaka, Tadayuki,Tanaka, Takeshi American Chemical Society 2014 Biomacromolecules Vol.15 No.3
<P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/bomaf6/2014/bomaf6.2014.15.issue-3/bm500046f/production/images/medium/bm-2014-00046f_0004.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/bm500046f'>ACS Electronic Supporting Info</A></P>
Kwon, Hyouk-Bum,Fukuhara, Shigetomo,Asakawa, Kazuhide,Ando, Koji,Kashiwada, Takeru,Kawakami, Koichi,Hibi, Masahiko,Kwon, Young-Guen,Kim, Kyu-Won,Alitalo, Kari,Mochizuki, Naoki Company of Biologists 2013 Development Vol.140 No.19
<P>Blood vessels and neurons grow often side by side. However, the molecular and cellular mechanisms underlying their parallel development remain unclear. Here, we report that a subpopulation of secondary motoneurons extends axons ventrally outside of the neural tubes and rostrocaudally as a fascicle beneath the dorsal aorta (DA) in zebrafish. We tried to clarify the mechanism by which these motoneuron axons grow beneath the DA and found that Vegfc in the DA and Vegfr3 in the motoneurons were essential for the axon growth. Forced expression of either Vegfc in arteries or Vegfr3 in motoneurons resulted in enhanced axon growth of motoneurons over the DA. Both <I>vegfr3</I> morphants and <I>vegfc</I> morphants lost the alignment of motoneuron axons with DA. In addition, forced expression of two mutant forms of Vegfr3 in motoneurons, potentially trapping endogenous Vegfc, resulted in failure of growth of motoneuron axons beneath the DA. Finally, a <I>vegfr3</I> mutant fish lacked the motoneuron axons beneath the DA. Collectively, Vegfc from the preformed DA guides the axon growth of secondary motoneurons.</P>
Fermented Ginseng Contains an Agonist of Peroxisome Proliferator Activated Receptors α and γ
Kentaro Igami,Yosuke Shimojo,Hisatomi Ito,Toshitsugu Miyazaki,Fusako Nakano,Yoshiki Kashiwada 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.9
Peroxisome proliferator activated receptor (PPAR) is a nuclear receptor that is one of the transcription factors regulating lipid and glucose metabolism. Fermented ginseng (FG) is a ginseng fermented by Lactobacillus paracasei A221 containing minor ginsenosides and metabolites of fermentation. DNA microarray analysis of rat liver treated with FG indicated that FG affects on lipid metabolism are mediated by PPAR-α. To identify a PPAR-α agonist in FG, PPAR-α transcription reporter assay-guided fractionation was performed. The fraction obtained from the MeOH extract of FG, which showed potent transcription activity of PPAR-α, was fractionated by silica gel column chromatography into 16 subfractions, and further separation and crystallization gave compound 1 together with four known constituents of ginseng, including 20(R)-and 20(S)-protopanaxadiol, and 20(R)- and 20(S)-ginsenoside Rh1. The structure of compound 1 was identified as 10-hydroxy-octadecanoic acid by 1H- and 13C-NMR spectra and by EI-MS analysis of the methyl ester of 1. Compound 1 demonstrated much higher transcription activity of PPAR-α than the other isolated compounds. In addition, compound 1 also showed 5.5-fold higher transcription activity of PPAR-γ than vehicle at the dose of 20 μg/mL. In the present study, we identified 10-hydroxy-octadecanoic acid as a dual PPAR-α/γ agonist in FG. Our study suggested that metabolites of fermentation, in addition to ginsenosides, contribute to the health benefits of FG.