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Hara, Yutaka,Kogo, Shohei,Takagaki, Katsuhiro,Kawanishi, Makoto,Sumi, Takahiro,Yoshida, Shigeo Korean Society for Fluid machinery 2017 International journal of fluid machinery and syste Vol.10 No.1
An objective of this study is to demonstrate the validity of using a small wind turbine to recover the fluid energy flowing out of an exhaust duct for the generation of power. In these experiments, a butterfly wind turbine of a vertical axis type (D = 0.4 m) is used. The output performance is measured at various locations relative to the exit of a small wind tunnel (W = 0.65 m), representing the performance expected in an exhaust duct flow. Two-dimensional numerical analysis qualitatively agrees with the experimental results for the wind turbine power coefficient and rate of energy recovery. When the turbine is far from the duct exit (more than 2.5 D), an energy recovery rate of approximately 1.3% is obtained.
Yutaka Hara,Shohei Kogo,Katsuhiro Takagaki,Makoto Kawanishi,Takahiro Sumi,Shigeo Yoshida 한국유체기계학회 2017 International journal of fluid machinery and syste Vol.10 No.1
An objective of this study is to demonstrate the validity of using a small wind turbine to recover the fluid energy flowing out of an exhaust duct for the generation of power. In these experiments, a butterfly wind turbine of a vertical axis type (D = 0.4 m) is used. The output performance is measured at various locations relative to the exit of a small wind tunnel (W = 0.65 m), representing the performance expected in an exhaust duct flow. Two-dimensional numerical analysis qualitatively agrees with the experimental results for the wind turbine power coefficient and rate of energy recovery. When the turbine is far from the duct exit (more than 2.5 D), an energy recovery rate of approximately 1.3% is obtained.
Biofilms formation of polymeric materials and its new quantitative evaluation
Hideyuki Kanematsu,Dana M. Barry,Akiko Ogawa,Takeshi Kogo,Risa Kawai,Hidekazu Miura,Nobumitsu Hirai,Takehito Kato,Toshio Kamijo,Michiko Yoshitake,Takeshi Hagio,Ryoichi Ichino 한국표면공학회 2023 한국표면공학회 학술발표회 초록집 Vol.2023 No.11-1
Alkoxysilane Compound Coating on Mortar Surfaces and Evaluation of Its Anti-biofilm Properties
Hideyuki Kanematsu,Dana M. Barry,Akiko Ogawa,Takeshi Kogo,Risa Kawai,Hidekazu Miura,Nobumitsu Hirai,Akihiro Maegawa,Yuki Murakami,Kaori Omata,Katsuhiko Tsunasima,Katsuhiko Sano,Akira Suzuki,Yoshiaki S 한국표면공학회 2023 한국표면공학회 학술발표회 초록집 Vol.2023 No.11-1
Kawasaki, Yasuhiro,Saito, Mitsuru,Won, Jonghwa,Bae, Jin Young,Sato, Hajime,Toyoda, Hiroki,Kuramoto, Eriko,Kogo, Mikihiko,Tanaka, Takuma,Kaneko, Takeshi,Oh, Seog Bae,Bae, Yong Chul,Kang, Youngnam Frontiers Media S.A. 2018 Frontiers in cellular neuroscience Vol.12 No.-
<P>Glutamatergic dendritic EPSPs evoked in cortical pyramidal neurons are depressed by activation of hyperpolarization-activated cyclic nucleotide-gated (HCN) channels expressed in dendritic spines. This depression has been attributed to shunting effects of HCN current (<I>I</I><SUB>h</SUB>) on input resistance or <I>I</I><SUB>h</SUB> deactivation. Primary sensory neurons in the rat mesencephalic trigeminal nucleus (MTN) have the somata covered by spine-like microvilli that express HCN channels. In rat MTN neurons, we demonstrated that <I>I</I><SUB>h</SUB> enhancement apparently diminished the glutamate receptor (GluR) current (<I>I</I><SUB>GluR</SUB>) evoked by puff application of glutamate/AMPA and enhanced a transient outward current following <I>I</I><SUB>GluR</SUB> (OT-<I>I</I><SUB>GluR</SUB>). This suggests that some outward current opposes inward <I>I</I><SUB>GluR</SUB>. The <I>I</I><SUB>GluR</SUB> inhibition displayed a U-shaped voltage-dependence with a minimal inhibition around the resting membrane potential, suggesting that simple shunting effects or deactivation of <I>I</I><SUB>h</SUB> cannot explain the U-shaped voltage-dependence. Confocal imaging of Na<SUP>+</SUP> revealed that GluR activation caused an accumulation of Na<SUP>+</SUP> in the microvilli, which can cause a negative shift of the reversal potential for <I>I</I><SUB>h</SUB> (<I>E</I><SUB>h</SUB>). Taken together, it was suggested that <I>I</I><SUB>GluR</SUB> evoked in MTN neurons is opposed by a transient decrease or increase in standing inward or outward <I>I</I><SUB>h</SUB>, respectively, both of which can be caused by negative shifts of <I>E</I><SUB>h</SUB>, as consistent with the U-shaped voltage-dependence of the <I>I</I><SUB>GluR</SUB> inhibition and the OT-<I>I</I><SUB>GluR</SUB> generation. An electron-microscopic immunohistochemical study revealed the colocalization of HCN channels and glutamatergic synapses in microvilli of MTN neurons, which would provide a morphological basis for the functional interaction between HCN and GluR channels. Mathematical modeling eliminated the possibilities of the involvements of <I>I</I><SUB>h</SUB> deactivation and/or shunting effect and supported the negative shift of <I>E</I><SUB>h</SUB> which causes the U-shaped voltage-dependent inhibition of <I>I</I><SUB>GluR</SUB>.</P>