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Activity Recording of Free-Ranging Tri-spine Horseshoe Crabs in the Southeastern Coast of Sabah,Borneo

Journal of Ocean University of China 2022年第3期21卷 549-556页

作者： watanabe Shinichi NELSON Bryan Raveen MANCA Azwarfarid MOHAMAD Faridah Little Leonardo Co. Tokyo1130021Japan Institute of Tropical Biodiversity and Sustainable Development Universiti Malaysia TerengganuKuala NerusKuala Terengganu21030Malaysia Pertubuhan Pelindung Alam Malaysia Casa Green CherasAlam43200Malaysia Horseshoe Crab Research Group Faculty of Science and Marine EnvironmentUniversiti Malaysia TerengganuKuala NerusKuala Terengganu21030Malaysia

In Inderasabah(southeast Sabah),tri-spine horseshoe crab Tachypleus tridentatus was observed for their locomotion activity using data loggers from September to November in 2015.A female with acceleration and depth-temperature loggers and five males with acceleration loggers were recaptured between 10 and 49 days after their *** the record of 194 activity days that involve all six ***,four horseshoe crabs,including the female,were active throughout the 24.0 h cycle,whereas the activity of the remaining two males was consistent with the 12.4 h *** the 40-day recording,three horseshoe crabs,including the female,were primarily active around the new moon and full moon,but they were dormant around the first and third quarter moon *** female spent much time in shallow shores(depth<0.3 m)during the new moon and full *** result indicated that the female attempted to spawn in a minimum of three spring tide periods while lingering in the ***,after spawning,the female spent time foraging in shallow water(depth 0.3–18 m).As for the two male individuals,their activity was consistent with semi-lunar ***,both of them were in *** addition,a solitary male individual was active only during the first and third quarter moon *** activity recording,all the *** in Inderasabah was active during daytime and *** result was contrary to *** activity cycles in western Japan,where the species was found to be primarily ***,the regional differences in activity cycles for *** were related to their population adaptation toward water temperature,depth,and prey-searching periods.

关键词： acceleration logger activity cycle depth-temperature logger foraging behavior spawning behavior tropical region Tachypleus tridentatus

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Physical Properties of Liquid Terbium Measured by Levitation Techniques

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Journal of Rare Earths 2007年第6期25卷 665-669页

作者： Paul-Francois Paradis Takehiko Ishikawa Noriyuki Koike Yuki watanabe Japan Aerospace Exploration Agency Institute of Space and Astronautical Science ISS Science Project Office 2-1-1 Sengen Tsukuba Ibaraki 305-8505 Japan Chiba Institute of Technology Tsudanuma Narashino Chiba Japan Advanced Engineering Service Co. Ltd. Tsukuba Ibaraki 305-0032 Japan

To understand the nature and behavior of rare earth metals in their liquid phases, accurate values of their physical properties are essential. However, to measure their physical properties, the samples should be maintained in liquid phases for prolonged time, and this raises a formidable challenge. This is mainly explained by their high melting temperatures （e.g., 1629 K for Tb）, high vapor pressure, and the risk of melt contamination with a crucible or support. An electrostatic levitation furnace alleviated these difficulties and allowed the determination of density, surface tension, and viscosity of several metals above their melting temperature. Here, first, the levitation furnace facility and the noncontact diagnostic procedures were briefly discussed, followed by the explanation of their thermophysical property measurements over wide temperature ranges. The density was obtained using an ultraviolet-based imaging technique that allowed excellent illumination, even at elevated temperatures. Over the 1615 to 1880 K temperature span, the density measurements could be expressed as p（T） =7.84 × 10^3 -0.47 （T - Tm）（kg · m^-3） with Tm = 1629 K, yielding a volume expansion coefficient a（T） = 6.0 × 10^-5 （K^-1）. In addition, the surface tension and the viscosity could be determined by inducing a drop oscillation to a molten sample. Using this technique, the surface tension data could be expressed as σ（T） = 8.93 × 10^2 - 0.10 （T - Tm）（mN· m^-1） and those for viscosity as η（T） =0.583 exp [4.1 × 10^4/（RT）] （MPa·s） over the 1690 to 1980 K temperature range

关键词： levitation liquid noncontact terbium rare earths

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Effects of silicon addition on optical properties of mould flux with iron oxide and estimation of apparent thermal conductivity of flux

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Journal of Iron and Steel Research International 2019年第4期26卷 365-373页

作者： Rie Endo Yo Kan Takashi watanabe Miyuki Hayashi Masahiro Susa Department of Materials Science and Engineering Tokyo Institute of TechnologyTokyo 152-8552Japan Department of Metallurgy and Ceramics Science Tokyo Institute of TechnologyTokyo 152-8552Japan

Mould flux with high absorptivity had been obtained in the reduction process of mould flux by *** further utilisation of the mould flux with high absorptivity,the effect of silicon addition on the optical property has been *** synthesised mould flux powder with iron oxide was melted with the addition of silicon powder at 1703 K followed by quenching,thus forming a glassy *** 5-30-min reduction,the samples exhibited black opaque ***,the samples that were reduced for 45-60 min had a bluish grey *** iron-based particles dispersed in the samples were micrometre order in *** determine the effect of iron particles on the optical properties of the sample,extinction,scattering and absorption efficiencies were calculated according to Mie *** showed that both scattering on the iron particle and absorption by iron effectively increase the extinction efficiency in the mould ***,the silicon particle in the flux has large scattering *** black opaque colour is contributed by the existence of silicon and iron *** apparent thermal conductivity was calculated for the solid *** also indicated that the entire glassy mould flux would effectively work for mild cooling in a continuous casting process owing to high absorptivity and small thermal conductivity.

关键词： Mould flux Reduction Iron oxide Thermal conductivity Optical property

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Pressure Measurement on Casing Wall and Blade Rows Interaction of Contra-Rotating Axial Flow Pump

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Journal of Thermal Science 2005年第2期14卷 142-149页

作者： Toru SHIGEMITSU Tomoya TAKANO Akinori FURUKAWA Kusuo OKUMA Satoshi watanabe Division of Mechanical Engineering Science Kyushu University 6-10-1HakozakiHigashi-kuFukuoka 812-8581JapanDivision of Mechanical Engineering Science Kyushu University6-10-1HakozakiHigashi-kuFukuoka 812-8581JapanDivision of Mechanical Engineering Science Kyushu University6-10-1HakozakiHigashi-kuFukuoka 812-8581JapanDivision of Mechanical Engineering Science Kyushu University6-10-1HakozakiHigashi-kuFukuoka 812-8581JapanDivision of Mechanical Engineering Science Kyushu University6-10-1HakozakiHigashi-kuFukuoka 812-8581Japan

An application of contra-rotating rotors has been proposed against a demand for developing higher specific speed axial flow pump. The blade rows interaction between front and rear rotors should be clarified for its stable operation and reduction of unsteady losses. In this paper, the static pressure distributions on casing wall are provided by measuring with the phase locked sampling method. The measurements are carried out for two types of the rear rotors with different blade number and chord length, and it is found that, for both types of rotors, the unsteady pressure fluctuations are more remarkable in the front rotor than in the rear rotor and they are caused by the rear rotor pressure field. The effects of pressure fluctuations will be discussed in more details toward understanding the blade rows interaction in the contra-rotating axial flow pump.

关键词：涡轮机逆旋转转子压力场叶栅交感测量方法

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Inclusive Proton Energy Spectra of the Deuteron Induced Reaction

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Chinese Physics Letters 2011年第11期28卷 87-90页

作者： WANG Jia YE Tao SUN Wei-Li Yukinobu watanabe Kazuyuki Ogata Institute of Applied Physics and Computational Mathematics Beijing 100094 Department of Advanced Energy Engineering Science Kyushu UniversityFukuoka 816-8580Japan Research Center for Nuclear Physics Osaka UniversityIbarakiOsaka 567-0047Japan

The continuum-discritized coupled channel method and the glauber model are applied for the description of deuteron elastic breakup and the stripping processes,*** with the conventional two-component exciton model for pre-equilibrium processes and the Hauser-Feshbach theory for compound process,an approach based on models is proposed to analyze the inclusive proton energy spectra of a deuteron-induced *** contributions from each process to the energy spectra of the 58Ni(d,xp)reaction are quantitatively *** results show that this approach is able to reasonably reproduce the experimental data of the double differential cross sections,energy spectra and cross sections,although further improvements are needed.

关键词： reaction spectra stripping

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REPRESENTATION OF PLASTICITY AT AN INTERFACE CRACK BY INCLINED STRIP YIELD SUPERDISLOCATION MODEL

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Acta Mechanica Solida Sinica 1994年第3期7卷 265-273页

作者： X.J.FAN K.watanabe Institute of Applied Mechanics.Taiyuan University of Technology Taiyuan 030024ShanxiP.R.China Institute of Industrial Science University of TokyoRoppongi 7-22-1Tokyo 106Japan

The basic equations of the representation of plasticity at an interface crack by an inclined strip yield superdislocation model are derived. With a special combination of the material properties and small-scale yielding case, the problem is reduced to an algebraic equation in an unknown, the ratio of the plastic zone size. Some discussions on the limitations of this model are presented.

关键词： Algebra Cracks Dislocations (crystals) Friction Interfaces (materials) Mathematical models Strain Vectors

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An Energy Based Dynamic AODV Routing Protocol in Wireless Ad Hoc Networks

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Computers, Materials & Continua 2020年第4期63卷 353-368页

作者： Wuyungerile Li Baoyintu Bing Jia Junxiu Wang Takashi watanabe College of Computer Inner Mongolia UniversityHohhot Inner Mongolia010021China Graduate School of Information Science and Technology Osaka UniversityOsaka565-0871Japan

In recent years,with the rapid development of the Internet and wireless communication technology,wireless Ad hoc networks have received more *** to the limited transmission range and energy of nodes in Ad hoc networks,it is important to establish a reliable and energy-balanced transmission path in Ad hoc *** paper proposes an energy-based dynamic routing protocol based on the existing AODV routing protocol,which has the following two aspects of improvement:(1)In the route discovery process,a node selects a suitable route from the minimum energy consumption route and the energy-balanced route designed in this paper according to a“Mark”bit that representing remaining energy of a node.(2)Based on(1),a route interruption update strategy was proposed to restart the route discovery process when node energy was used *** results demonstrate that compared with AODV and other existing routing protocols,proposed algorithm can reduce network energy consumption and balance node energy,thus extending the network lifetime.

关键词： Ad hoc networks routing protocol energy network lifetime

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Effect of Injection Position on In-Flight Melting Behavior of Granular Alkali-Free Glass Raw Material in 12-Phase AC Arc Plasma

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Plasma Science and Technology 2009年第6期11卷 699-703页

作者：姚耀春 K.YATSUDA T.watanabe T.YANO National Engineering Laboratory of Vacuum Metallurgy Kunming University of Science and Technology Department of Environmental Chemistry and Engineering Tokyo Institute of TechnologyYokohama 226-8502Japan Department of Chemistry and Materials Science Tokyo Institute of TechnologyTokyo 152-8550Japan

An innovative in-flight glass melting technology with a multi-phase AC arc plasma was developed to save energy and reduce emissions for the glass industry. The effect of the injection position on the in-flight melting behavior of granulated powders was investigated. Results show that the injection position has a strong effect on the melting behavior of alkali-free glass raw material. With the increase in injection distance, the vitrification, decomposition, and particle shrinkage of initial powders are improved. Longer injection distance causes much energy to transfer to particles due to a longer residence time of powder in the high temperature zone. The high vitrification and decomposition degrees indicate that the new in-flight melting technology with 12-phase AC arc can substantially reduce the melting and refining time for glass production.

关键词： 12-phase AC arc plasma in-flight melting technology heat transfer glass production

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Japan's experience of energy saving and business model for low-carbon economy

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Chinese Journal of Population,Resources and Environment 2013年第4期11卷 288-298页

作者： Satoshi watanabe Makoto Nishimura Graduate School of Economics Nagoya University

The purpose of this paper is to clarify the questions concerning stimulation of the innovation and the diffusion of energy saving or *** do so,this paper explains using two cases of Japan-energy saving innovation after the Oil Shock and the eco points *** the case after the oil shock,we explain the energy saving trend after the Oil Shock and the factors *** we put forward the business model for the low-carbon ***,we analyze the case of the eco points system from 2009-2011 in Japan and explain the significance of the business model for diffusion of the low-carbon products.

关键词： energy saving innovation eco-point system business model low-carbon economy Japan

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Proposal of Walking to Prevent a Fall of a Planetary Exploration Legged Rover Using Effect of Loose Soil Caused by a Propagation of Vibration

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Journal of Artificial Intelligence and Technology 2021年第3期1卷 153-165页

作者： Tomohiro watanabe Kojiro Iizuka Graduate School of Engineering and Science Shibaura Institute of TechnologySaitama City 337-8570Japan Department of Systems and Engineering and Science Shibaura Institute of TechnologySaitama City 337-8570Japan

In this study,a walking method that prevents a fall of the planetary exploration-legged rover is *** the proposed walking method,the leg is sunk by giving vibration to the *** posture of the rover is changed to prevent a fall of the rover by sinking the ***,the relationship between the kind of vibration and the subsidence of the leg is *** this experimental result,the leg is shown to be easy to sink to the ground by giving ***,the larger the vibratory force is,the easier the leg sinks to the ***,the legged testbed walks on the loose ground with a slope using the proposed walking *** this experimental result,the testbed is difficult to fall down when it uses the proposed ***,the angle of a slope that the testbed can walk becomes large by using the proposed walking.

关键词： planetary exploration legged rover fall prevention loose ground vibration

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