http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Porphyrin–hexaphyrin hybrid tapes
Tanaka, Takayuki,Aratani, Naoki,Lim, Jong Min,Kim, Kil Suk,Kim, Dongho,Osuka, Atsuhiro Royal Society of Chemistry 2011 Chemical science Vol.2 No.7
<P>A <I>meso-meso</I> linked porphyrin–hexaphyrin hybrid was synthesized by the cross condensation using <I>meso</I>-porphyrinyl-dipyrromethane and was oxidized with DDQ-Sc(OTf)<SUB>3</SUB> to afford a porphyrin–[26]hexaphyrin hybrid tape that was reduced with NaBH<SUB>4</SUB> to give a porphyrin–[28]hexaphyrin hybrid tape. Fully electronic conjugations in the hybrid tapes are observed in the UV/vis/NIR absorption spectra, electrochemistry, and excited-state dynamics.</P> <P>Graphic Abstract</P><P>A <I>meso-meso</I> linked porphyrin–hexaphyrin hybrid was synthesized by the cross condensation reaction and was oxidized with DDQ-Sc(OTf)<SUB>3</SUB> to afford a porphyrin–[26]hexaphyrin hybrid tape that can be reduced to [28]hexaphyrin congener. Fully electronic conjugations in the hybrid tapes are observed in the UV/vis/NIR absorption spectra, electrochemistry, and excited-state dynamics. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1sc00228g'> </P>
Smart Suit: Soft Power Suit with Semi-active Assist Mechanism
Takayuki Tanaka,Yuta Satoh,Shun’ichi Kaneko,Yoshihito SUZUKI,Naohisa Sakamoto,Shuji Seki 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
We have been developing “mart Suit”as a soft and light-weight wearable power assist system. A prototype for preventing low-back injury in agricultural works and its semi-active assist mechanism have been developed in the previous study. The previous prototype succeeded to reduce about 14% of average muscle fatigues of body trunk in waist extension/flexion motion. In this paper, we describe a prototype of smart suit for supporting waist and knee joint, and its control method for preventing the displacement of the adjustable assist force mechanism in order to keep the assist efficiency.
Tanaka, Hideyuki,Matsuoka, Yasutomo,Kawakami, Takuma,Azegami, Yasuhiko,Yamamoto, Masashi,Ohtake, Kazuo,Sone, Takayuki Council on Tall Building and Urban Habitat Korea 2019 International journal of high-rise buildings Vol.8 No.4
We performed calculations combining optimization technologies and Computational Fluid Dynamics (CFD) aimed at reducing wind forces and mitigating wind environments (local strong winds) around buildings. However, the Reynolds Averaged Navier-stokes Simulation (RANS), which seems somewhat inaccurate, needs to be used to create a realistic CFD optimization tool. Therefore, in this study we explored the possibilities of optimizing calculations using RANS. We were able to demonstrate that building configurations advantageous to wind forces could be predicted even with RANS. We also demonstrated that building layouts was more effective than building configurations in mitigating local strong winds around tall buildings. Additionally, we used the Convolutional Neural Network (CNN) as an airflow prediction method alternative to CFD in order to increase the speed of optimization calculations, and validated its prediction accuracy.
New Collision Force Suppression Mechanism and Base Control of Human-Friendly Robot
Naoto Tanaka,Takayuki Iwama,Shunsuke Kumagai,Atsuo Takanishi,Hun-ok Lim 제어로봇시스템학회 2018 제어로봇시스템학회 국제학술대회 논문집 Vol.2018 No.10
This paper describes a human-friendly robot capable of securing human safety in human-robot collisions. The upper body of the robot has 11 DOFs, including 3 DOFs in the waist, 2 DOFs in each shoulder, 1 DOF in each elbow and 1 DOF in each hand. The upper body is mounted on the base with four omnidirectional wheels. A new light-weight collision force suppression mechanism that is able to operate with very little backlash was developed and was installed at the elbow of the human-friendly robot. The suppression mechanism consists a drum, a clutch gear, two release air bag, two stopper linings, and four compression springs. Also, a base control method to secure human safety is discussed. Through collision experiments, the effectiveness of the collision force suppression mechanism and control method is verified.
Liang, Feng,Tanaka, Manabu,Choi, Sooseok,Watanabe, Takayuki Elsevier 2017 Carbon Vol.117 No.-
<P>Diffuse and multiple arc-anode attachment modes were observed when using DC arc discharge to prepare carbon nanomaterials. The effects of arc current and electrode gap distance on the formation of different attachment modes were investigated. The formation of different attachment modes is explained by the competition of the cathode jet and the anode jet. During the arc discharge, the surface temperature of the carbon electrode was measured by two-colour pyrometry combined with a high-speed camera employing appropriate band-pass filters. The relationship between the arc-anode attachment mode and the temperature fluctuation of the electrode surface was investigated. Due to the unbalanced Lorenz force, the rotation of arc spot was severe in diffuse arc-anode attachment mode, which led to relatively large temperature fluctuations on the anode surface, resulting in low purity of synthesised multi-wall carbon nanotubes on the anode deposit. (C) 2017 Elsevier Ltd. All rights reserved.</P>
Liang, Feng,Tanaka, Manabu,Choi, Sooseok,Watanabe, Takayuki Institute of Physics Publishing Ltd. 2016 Journal of Physics. D, Applied Physics Vol.49 No.12
<P>Multiple and constricted arc-anode attachment modes were observed in helium arc discharge to prepare nickel nanoparticles. The electron overheating instability resulted in the formation of multiple attachment modes. The effects of hydrogen concentration and shield gas flow rate on the characteristics of nickel nanoparticles were investigated. The evaporation rate of anode material contributed to forming different arc-anode attachments. The surface temperature of the electrode was measured during the arc discharge by two-color pyrometry combined with a high-speed camera which employs appropriate band-pass filters. The relationship between the arc-anode attachment mode and the temperature behavior of the anode surface was investigated by using two synchronized high-speed cameras. The waveform of anode jet area variation with time follows that of the highest temperature variation of anode surface with time. The fluctuation of the highest anode temperature increased when the arc anode attachment changed from multiple into constricted mode. The highest temperature fluctuation and stability of the arc contributed to nanoparticle size distribution. Nickel nanoparticles with large productivity and narrow size distribution were obtained when shield gas was employed by controlling the residence time of nanoparticle growth. The formation mechanism of different arc-anode attachment modes was explained.</P>