The Experts below are selected from a list of 204 Experts worldwide ranked by ideXlab platform
Hirohisa Morikawa - One of the best experts on this subject based on the ideXlab platform.
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Thrust—Force Characteristics of Enlarged Propulsion Mechanisms Modeled on Eukaryotic Flagellar Movement and Ciliary Movement in Fluid
Bio-mechanisms of Swimming and Flying, 2020Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Kozo Furihata, Hirohisa MorikawaAbstract:We have noted the utility of the eukaryotic flagellar Movement and the Ciliary Movement for propulsion in fluid, and developed two enlarged propulsion mechanisms modeled on eukaryotic flagellar and Ciliary Movements. For the propulsion mechanisms modeled on eukaryotic flagellar Movement, we used the model of the active sliding of microtubules in eukaryotic flagella: active sliding between two rows of electromagnets on flexible beams corresponding to the active sliding of microtubules was made for the bending of the mechanism. For the propulsion mechanisms modeled on Ciliary Movement, we made a bending mechanism equipped with a motor on its base and a variable-bending stiffness fin that realizes the effective stroke and recovery stroke. The vari-able-bending-stiffness fin consists of two flexible sheets and electromagnets. The electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discuss the thrust force characteristics of the two propulsion mechanisms.
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Bioinspired Aquatic Propulsion Mechanisms with Real-Time Variable Apparent Stiffness Fins
2006 IEEE International Conference on Robotics and Biomimetics, 2006Co-Authors: Shunichi Kobayashi, Hirohisa Morikawa, Tomomasa Ozaki, Masataka Nakabayashi, Akitoshi ItohAbstract:We aimed to develop the aquatic propulsion mechanisms of Paramecium like and fish like robots that consist of real-time variable stiffness fins. For the aquatic propulsion mechanisms of the Paramecium like robot, we have used fins with ICPF (Ionic Conducting Polymer gel Film) actuator to change its stiffness for representing Ciliary Movement. For the aquatic propulsion mechanisms of the fish like robot, we have used a fin with variable effective length spring which changes its apparent bending stiffness. We discussed the Movement of the real-time variable stiffness fins and thrust force characteristics of the propulsion mechanisms in fluid.
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thrust force characteristics of enlarged propulsion mechanisms modeled on eukaryotic flagellar Movement and Ciliary Movement in fluid
2004Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Kozo Furihata, Hirohisa MorikawaAbstract:We have noted the utility of the eukaryotic flagellar Movement and the Ciliary Movement for propulsion in fluid, and developed two enlarged propulsion mechanisms modeled on eukaryotic flagellar and Ciliary Movements. For the propulsion mechanisms modeled on eukaryotic flagellar Movement, we used the model of the active sliding of microtubules in eukaryotic flagella: active sliding between two rows of electromagnets on flexible beams corresponding to the active sliding of microtubules was made for the bending of the mechanism. For the propulsion mechanisms modeled on Ciliary Movement, we made a bending mechanism equipped with a motor on its base and a variable-bending stiffness fin that realizes the effective stroke and recovery stroke. The vari-able-bending-stiffness fin consists of two flexible sheets and electromagnets. The electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discuss the thrust force characteristics of the two propulsion mechanisms.
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Variable stiffness fin for propulsion in fluid
2004 International Conference on Intelligent Mechatronics and Automation 2004. Proceedings., 2004Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, K. Kawasumi, Hirohisa MorikawaAbstract:Ciliary Movement has an advantage for propulsion if the body is covered by many cilia such as in the case of a paramecium; the body is able to rotate in situ and change its direction io propel jtself M small spaces. Thus, we made the enlarged propulsion mechanism in fluid modeled on Ciliary Movement equipped with a motor OR its base and two types of the variable stiffness fins that realize the effective stroke and recovery stroke of Ciliary Movement. We discussed the Movement of the variable stiffness fin and thrust force Characteristics of the enlarged propulsion mechanism in fluid.
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thrust force characteristics of propulsion mechanism in fluid using variable bending stiffness fin modeled on Ciliary Movement
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing, 2003Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Hirohisa MorikawaAbstract:The application of dynamics observed in organisms is very instructive in the field of engineering. We noted the utility of Ciliary Movement for propulsion in fluid, and developed an enlarged propulsion mechanism modeled on Ciliary Movement. To realize the effective stroke and recovery stroke of Ciliary Movement, the mechanism was equipped with a motor on its base and a variable-bending-stiffness fin. The variable-bending-stiffness fin consists of two flexible sheets and electromagnets. Electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discussed the thrust force characteristics of the mechanism in water and highly viscous liquid paraffin.
Shunichi Kobayashi - One of the best experts on this subject based on the ideXlab platform.
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Thrust—Force Characteristics of Enlarged Propulsion Mechanisms Modeled on Eukaryotic Flagellar Movement and Ciliary Movement in Fluid
Bio-mechanisms of Swimming and Flying, 2020Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Kozo Furihata, Hirohisa MorikawaAbstract:We have noted the utility of the eukaryotic flagellar Movement and the Ciliary Movement for propulsion in fluid, and developed two enlarged propulsion mechanisms modeled on eukaryotic flagellar and Ciliary Movements. For the propulsion mechanisms modeled on eukaryotic flagellar Movement, we used the model of the active sliding of microtubules in eukaryotic flagella: active sliding between two rows of electromagnets on flexible beams corresponding to the active sliding of microtubules was made for the bending of the mechanism. For the propulsion mechanisms modeled on Ciliary Movement, we made a bending mechanism equipped with a motor on its base and a variable-bending stiffness fin that realizes the effective stroke and recovery stroke. The vari-able-bending-stiffness fin consists of two flexible sheets and electromagnets. The electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discuss the thrust force characteristics of the two propulsion mechanisms.
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Bioinspired Aquatic Propulsion Mechanisms with Real-Time Variable Apparent Stiffness Fins
2006 IEEE International Conference on Robotics and Biomimetics, 2006Co-Authors: Shunichi Kobayashi, Hirohisa Morikawa, Tomomasa Ozaki, Masataka Nakabayashi, Akitoshi ItohAbstract:We aimed to develop the aquatic propulsion mechanisms of Paramecium like and fish like robots that consist of real-time variable stiffness fins. For the aquatic propulsion mechanisms of the Paramecium like robot, we have used fins with ICPF (Ionic Conducting Polymer gel Film) actuator to change its stiffness for representing Ciliary Movement. For the aquatic propulsion mechanisms of the fish like robot, we have used a fin with variable effective length spring which changes its apparent bending stiffness. We discussed the Movement of the real-time variable stiffness fins and thrust force characteristics of the propulsion mechanisms in fluid.
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thrust force characteristics of enlarged propulsion mechanisms modeled on eukaryotic flagellar Movement and Ciliary Movement in fluid
2004Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Kozo Furihata, Hirohisa MorikawaAbstract:We have noted the utility of the eukaryotic flagellar Movement and the Ciliary Movement for propulsion in fluid, and developed two enlarged propulsion mechanisms modeled on eukaryotic flagellar and Ciliary Movements. For the propulsion mechanisms modeled on eukaryotic flagellar Movement, we used the model of the active sliding of microtubules in eukaryotic flagella: active sliding between two rows of electromagnets on flexible beams corresponding to the active sliding of microtubules was made for the bending of the mechanism. For the propulsion mechanisms modeled on Ciliary Movement, we made a bending mechanism equipped with a motor on its base and a variable-bending stiffness fin that realizes the effective stroke and recovery stroke. The vari-able-bending-stiffness fin consists of two flexible sheets and electromagnets. The electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discuss the thrust force characteristics of the two propulsion mechanisms.
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Variable stiffness fin for propulsion in fluid
2004 International Conference on Intelligent Mechatronics and Automation 2004. Proceedings., 2004Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, K. Kawasumi, Hirohisa MorikawaAbstract:Ciliary Movement has an advantage for propulsion if the body is covered by many cilia such as in the case of a paramecium; the body is able to rotate in situ and change its direction io propel jtself M small spaces. Thus, we made the enlarged propulsion mechanism in fluid modeled on Ciliary Movement equipped with a motor OR its base and two types of the variable stiffness fins that realize the effective stroke and recovery stroke of Ciliary Movement. We discussed the Movement of the variable stiffness fin and thrust force Characteristics of the enlarged propulsion mechanism in fluid.
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thrust force characteristics of propulsion mechanism in fluid using variable bending stiffness fin modeled on Ciliary Movement
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing, 2003Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Hirohisa MorikawaAbstract:The application of dynamics observed in organisms is very instructive in the field of engineering. We noted the utility of Ciliary Movement for propulsion in fluid, and developed an enlarged propulsion mechanism modeled on Ciliary Movement. To realize the effective stroke and recovery stroke of Ciliary Movement, the mechanism was equipped with a motor on its base and a variable-bending-stiffness fin. The variable-bending-stiffness fin consists of two flexible sheets and electromagnets. Electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discussed the thrust force characteristics of the mechanism in water and highly viscous liquid paraffin.
Shoji A Baba - One of the best experts on this subject based on the ideXlab platform.
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tubulin dynein system in flagellar and Ciliary Movement
Proceedings of the Japan Academy. Series B Physical and biological sciences, 2012Co-Authors: Kazuo Inaba, Hideo Mohri, Sumio Ishijima, Shoji A BabaAbstract:Eukaryotic flagella and cilia have attracted the attention of many researchers over the last century, since they are highly arranged organelles and show sophisticated bending Movements. Two important cytoskeletal and motor proteins, tubulin and dynein, were first found and described in flagella and cilia. Half a century has passed since the discovery of these two proteins, and much information has been accumulated on their molecular structures and their roles in the mechanism of microtubule sliding, as well as on the architecture, the mechanism of bending Movement and the regulation and signal transduction in flagella and cilia. Historical background and the recent advance in this field are described.
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Improvement in time and space resolution of stroboscopic micrography using high power xenon flash
Review of Scientific Instruments, 1998Co-Authors: Momoko O. Miyake, Yoshihiro Mogami, Eri Kataoka, Eri Kajita, Shoji A BabaAbstract:A circuit capable of regulating 300-W xenon flash tubes up to at 5000 flashes per second (fps) using an insulated gate bipolar transistor (IGBT) as a gating device is presented. This device enables the microscopic analysis of Ciliary Movement at very high temporal and spatial resolutions, revealing slow and fast phases of angular change during the effective stroke of a single cilium.
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regulation of Ciliary Movement in sea urchin embryos dopamine and 5 ht change the swimming behaviour
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1992Co-Authors: Mogami Yoshihiro, Watanabe Keiko, Ooshima Chieko, Kawano Akemi, Shoji A BabaAbstract:Abstract 1. Effects of dopamine and 5-HT on the swimming behaviour of larvae of the sea urchins, Pseudocentrotus depressus and Hemicentrotus pukherrimus were investigated by means of computer-aided image analysis. 2. Dopamine reduced the speed of forward swimming of the larvae after prism stage, and induced backward swimming in plutei of P. depressus , but not in H. pulcherrimus . 3. 5-HT tended to increase the speed of forward swimming of plutei and suppress spontaneous backward swimming.
Akitoshi Itoh - One of the best experts on this subject based on the ideXlab platform.
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Bioinspired Aquatic Propulsion Mechanisms with Real-Time Variable Apparent Stiffness Fins
2006 IEEE International Conference on Robotics and Biomimetics, 2006Co-Authors: Shunichi Kobayashi, Hirohisa Morikawa, Tomomasa Ozaki, Masataka Nakabayashi, Akitoshi ItohAbstract:We aimed to develop the aquatic propulsion mechanisms of Paramecium like and fish like robots that consist of real-time variable stiffness fins. For the aquatic propulsion mechanisms of the Paramecium like robot, we have used fins with ICPF (Ionic Conducting Polymer gel Film) actuator to change its stiffness for representing Ciliary Movement. For the aquatic propulsion mechanisms of the fish like robot, we have used a fin with variable effective length spring which changes its apparent bending stiffness. We discussed the Movement of the real-time variable stiffness fins and thrust force characteristics of the propulsion mechanisms in fluid.
Tomoaki Mashima - One of the best experts on this subject based on the ideXlab platform.
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Thrust—Force Characteristics of Enlarged Propulsion Mechanisms Modeled on Eukaryotic Flagellar Movement and Ciliary Movement in Fluid
Bio-mechanisms of Swimming and Flying, 2020Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Kozo Furihata, Hirohisa MorikawaAbstract:We have noted the utility of the eukaryotic flagellar Movement and the Ciliary Movement for propulsion in fluid, and developed two enlarged propulsion mechanisms modeled on eukaryotic flagellar and Ciliary Movements. For the propulsion mechanisms modeled on eukaryotic flagellar Movement, we used the model of the active sliding of microtubules in eukaryotic flagella: active sliding between two rows of electromagnets on flexible beams corresponding to the active sliding of microtubules was made for the bending of the mechanism. For the propulsion mechanisms modeled on Ciliary Movement, we made a bending mechanism equipped with a motor on its base and a variable-bending stiffness fin that realizes the effective stroke and recovery stroke. The vari-able-bending-stiffness fin consists of two flexible sheets and electromagnets. The electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discuss the thrust force characteristics of the two propulsion mechanisms.
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thrust force characteristics of enlarged propulsion mechanisms modeled on eukaryotic flagellar Movement and Ciliary Movement in fluid
2004Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Kozo Furihata, Hirohisa MorikawaAbstract:We have noted the utility of the eukaryotic flagellar Movement and the Ciliary Movement for propulsion in fluid, and developed two enlarged propulsion mechanisms modeled on eukaryotic flagellar and Ciliary Movements. For the propulsion mechanisms modeled on eukaryotic flagellar Movement, we used the model of the active sliding of microtubules in eukaryotic flagella: active sliding between two rows of electromagnets on flexible beams corresponding to the active sliding of microtubules was made for the bending of the mechanism. For the propulsion mechanisms modeled on Ciliary Movement, we made a bending mechanism equipped with a motor on its base and a variable-bending stiffness fin that realizes the effective stroke and recovery stroke. The vari-able-bending-stiffness fin consists of two flexible sheets and electromagnets. The electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discuss the thrust force characteristics of the two propulsion mechanisms.
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Variable stiffness fin for propulsion in fluid
2004 International Conference on Intelligent Mechatronics and Automation 2004. Proceedings., 2004Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, K. Kawasumi, Hirohisa MorikawaAbstract:Ciliary Movement has an advantage for propulsion if the body is covered by many cilia such as in the case of a paramecium; the body is able to rotate in situ and change its direction io propel jtself M small spaces. Thus, we made the enlarged propulsion mechanism in fluid modeled on Ciliary Movement equipped with a motor OR its base and two types of the variable stiffness fins that realize the effective stroke and recovery stroke of Ciliary Movement. We discussed the Movement of the variable stiffness fin and thrust force Characteristics of the enlarged propulsion mechanism in fluid.
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thrust force characteristics of propulsion mechanism in fluid using variable bending stiffness fin modeled on Ciliary Movement
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing, 2003Co-Authors: Shunichi Kobayashi, Tomoaki Mashima, Hirohisa MorikawaAbstract:The application of dynamics observed in organisms is very instructive in the field of engineering. We noted the utility of Ciliary Movement for propulsion in fluid, and developed an enlarged propulsion mechanism modeled on Ciliary Movement. To realize the effective stroke and recovery stroke of Ciliary Movement, the mechanism was equipped with a motor on its base and a variable-bending-stiffness fin. The variable-bending-stiffness fin consists of two flexible sheets and electromagnets. Electromagnets control the frictional force between the two flexible sheets. Bending stiffness is controlled dynamically by changing the frictional force between the two flexible sheets. We discussed the thrust force characteristics of the mechanism in water and highly viscous liquid paraffin.