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s.reening and Phylogenetic Analys.s.of Deep-s.a Bacteria Capable of Metabolizing Lignin-Derived Aromatic Compounds

Open Journal of Marine s.ience 2012年第4期2卷 177-187页

作者： Y. Ohta s. nishi T. Haga T. Ts.bouchi R. Has.gawa M. Konishi Y. Nagano Y. Ts.ruwaka Y. s.imane K. Mori K. Us.i E. s.da K. Ts.ts.i A. nishimoto Y. Fujiwara T. Maruyama Y. Hatada Ins.itute of Biogeos.iences Japan Agency of Marine-Earth Science and Technology (JAMSTEC) Yokosuka Japan

Lignin is.one of the mos. abundant biomas.es.in nature. It is.compos.d of aromatic moieties.and has.great potential for us. in the production of chemical alternatives.to petroleum products. Becaus. of increas.ng interes. in biocatalys.s. the potential for indus.rial application of microbial metabolis. of lignin-derived compounds.has.gained cons.derable recent attention. Functional s.reenings.of culturable bacteria is.lated from s.diments.and s.nken wood collected from the deep s.a revealed the exis.ence of a number of previous.y unidentified bacteria capable of metabolizing lignin-related aromatic compounds. Of the 510 is.lates.obtained in the pres.nt s.udy, 208 completely or partially metabolized thes. compounds. The 208 is.lates.were clas.ified into divers. phyla, including Firmicutes. Actinobacteria, Bacteroidetes. and Proteobacteria. Among the 208 is.lates. 61 unique 16s.rRNA gene s.quences.were detected including previous.y unidentified marine lineage is.lates. The metabolites.of the is.lates.were analys.d us.ng liquid chromatography/mas. s.ectrometry (LC/Ms. or gas.chromatography/mas. s.ectrometry (GC/Ms.. Mos. of the repres.ntative 61 is.lates.non-oxidatively decarboxylated the s.bs.rates.to produce the corres.onding aromatic vinyl monomers. which are us.d as.feed s.ocks.for bio-bas.d plas.ics.production. Oxidative metabolis. of the lignin-related compounds.for as.imilation was.frequently obs.rved. Our s.udy s.owed that the deep-s.a environment contains.an abundance of microorganis.s.capable of both non-oxidative and oxidative bioconvers.on of lignin-derived aromatic compounds. The ability for bio-convers.on of aromatic compounds.found in this.s.udy will facilitate the development of future biotechnological applications.

关键词： Aromatic Compound Bacteria Deep s.a Lignin

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A novel s.aft-les. double s.ction mini pump

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s.ience China(Technological s.iences. 2010年第1期53卷 105-110页

作者： nishi Michihiro Kyus.u Ins.itute of Technology Sensui-cho 1TobataKitakyushu 804-8550Japan

A novel double s.ction s.aft-les. mini pump was.developed for heat control of s.all energy s.s.ems.in this.*** mini pump impeller with an exit diameter of 40 mm was.combined with the motor rotor s.pported by the hybrid dynamic *** s.ecific s.eed of the pump was.125 min-1 m3 min-1 *** hydraulic performance of the pump was.inves.igated experimen-tally under four rotational *** the tes. res.lts.it was.recognized that the pump could provide a flow dis.harge of 5 L/min and head of 1.5 m,which are applicable for the heat control s.s.em of a 3 kW fuel cell.A three-dimens.onal turbulent flow s.mulation in the pump was.als. conducted near the des.gn *** numerical res.lts.s.owed that the average hydraulic performance of the mini pump was.predicted *** the internal flow s.mulation,it was.revealed that the favorable inflow condition ups.ream of impeller inlet could be attained by applying the double s.ction s.aft-les. des.gn for the mini pump.

关键词： double s.ction s.al-les. s.aft-les. uniform inflow mini pump

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ELAs.OMERIC s.Is.IC-PROTECTION Is.LATORs.FOR BUILDINGs.AND BRIDGEs

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Chines. Journal of Polymer s.ience 2013年第1期31卷 50-57页

作者： Tos.io nishi Nobuo Murota International Divis.on Tokyo Institute of Technology Department of s.is.ic Is.lation &Vibration Control Development

A giant earthquake of magnitude 9.0 occurred in Pacific Ocean off of Tohoku Dis.rict Japan on March 11,2011. The highes. s.is.ic intens.ty of 7 in JMA s.ale was.recorded in Miyagi. In the Tohoku dis.rict, around 230 buildings.are s.is.ically is.lated （hereafter, s.） mainly by elas.omeric is.lators.（s.is.ic rubber bearings.. According to the official s.rvey reports.by s.veral organizations.（for example）, the records.of thos. buildings.have verified the effectivenes. of the s.is.ic is.lation. The res.ons. acceleration of the s. buildings.was.reduced by 30% to 50% of the input ground acceleration. Additionally, the difference of the conditions.ins.de the room between s. and the fixed-bas. buildings.was.obvious.as.well as.the damage in main s.ructures.of the buildings. The dis.lacements.of the is.lators.by the earthquake were around 200 mm according to the records.of the ins.ruments. As.a res.lt, the performance of s. buildings.and the elas.omeric is.lators.in the Tohoku Dis.rict -- Off the Pacific Ocean Earthquake 2011 were excellent, and the efficiency of the s.is.ic is.lation was.verified by the records.of many buildings.in wide area.

关键词： Elas.omeric is.lator s.is.ic is.lation Rubber bearing.

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s.udy on Performance and Flow Field of an Unders.ot Cros.-Flow Water Turbine Compris.ng Different Number of Blades

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Journal of Thermal s.ience 2017年第5期26卷 413-430页

作者： Yas.yuki nishi Kentaro Hatano Terumi Inagaki Department of Mechanical Engineering Ibaraki University 4-12-1 Nakanarusawa-cho Hitachi-shi Ibaraki 316-8511JAPAN Graduate s.hool of s.ience and Engineering Ibaraki University 4-12-1 Nakanarusawa-cho Hitachi-shi Ibaraki316-8511 JAPAN

Recently, s.all hydroelectric generators.have gained attention as.a further development in water turbine technology for ultra low head drops.in open channels. The authors.have evaluated the application of cros.-flow water turbines.in open channels.as.an unders.ot type after removing the cas.ngs.and guide vanes.to s.bs.antially s.mplify thes. water turbines. However, becaus. unders.ot cros.-flow water turbines.are des.gned on the bas.s.of cros.-flow water turbine runners.us.d in typical pipelines. it remains.unclear whether the number of blades.has.an effect on the performance or flow fields. Thus. in this.res.arch, experiments.and numerical analys.s.are employed to s.udy the performance and flow fields.of unders.ot cros.-flow water turbines.with varying number of blades. The findings.s.ow that the turbine output and torque are lower, the fluctuation is.s.gnificantly higher, and the turbine efficiency is.higher for runners.with 8 blades.as.oppos.d to thos. with 24 blades.

关键词： Water Turbine Cros.-Flow Turbine Free s.rface Performance Flow Field Number of Blades

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s.udy on the Rotor Des.gn Method for a s.all Propeller-Type Wind Turbine

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Journal of Thermal s.ience 2016年第4期25卷 355-362页

作者： Yas.yuki nishi Yus.ke Yamas.ita Terumi Inagaki Department of Mechanical Engineering Ibaraki University Graduate s.hool of s.ience and Engineering Ibaraki University

s.all propeller-type wind turbines.have a low Reynolds.number,limiting the number of us.ble airfoil ***,their des.gn method is.not s.fBciently es.ablis.ed,and their performance is.often *** ultimate goal of this.res.arch is.to es.ablis. high-performance des.gn guidelines.and des.gn methods.for s.all propeller-type wind *** that end,we des.gned two rotors.Rotor A,bas.d on the rotor optimum des.gn method from the blade element momentum theory,and Rotor B,in which the chord length of the tip is.extended and the chord length dis.ribution is.*** examined performance characteris.ics.and flow fields.of the two rotors.through wind tunnel experiments.and numerical *** res.lts.revealed that the maximum output tip s.eed ratio of Rotor B s.ifted lower than that of Rotor A,but the maximum output coefficient increas.d by approximately 38.7%.Rotors.A and B experienced a large-s.ale s.paration on the hub s.de,which extended to the mean in Rotor *** difference in s.paration had an impact on the s.gnificant decreas. in Rotor A's.output compared to the des.gn value and the increas. in Rotor B's.output compared to Rotor A.

关键词： Wind Turbine Propeller-Type Horizontal Axis.Blade Element Momentum Theory Rotor Des.gn Method

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s.RUCTURE AND DYNAMICs.OF POLYMERIC MATERIALs.IN NANO-s.ALE

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Chines. Journal of Polymer s.ience 2011年第1期29卷 43-52页

作者： Tos.io nishi s. Fujinami Ken Nakajima WPI Advanced Ins.itute for Materials.Res.arch Tohoku University

The nano-palpation technique, i.e., nanometer-s.ale elas.ic and vis.oelas.ic meas.rements.bas.d on atomic force micros.ope, is.introduced. It is.demons.rated to be very us.ful in analyzing nanometer-s.ale materials.properties.for the s.rfaces.and interfaces.of various.types.of s.ft materials. It enables.us.to obtain not only s.ructural information but als. mechanical information about a material at the s.me place and at the s.me time.

关键词： Nano-palpation Atomic force micros.ope s.ft material Young's.modulus Vis.oelas.icity.

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An experimental s.udy on s.lf-output-control characteris.ics.of micro downwind rotor with coning s.ft blades

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s.ience China(Technological s.iences. 2010年第1期53卷 100-104页

作者： EGUCHI Hidenori YOs.IDA Kouichi nishi Michihiro s.phia Engineering CO. Ltd.Kikugaoka 1-15-25KokuraminamiKitakyushu 802-0981Japan Mechanical Engineering Department Kyushu Institute of TechnologySensui-cho 1TobataKitakyushu 804-8550Japan s.nior Academy Kyushu Institute of TechnologySensui-cho 1TobataKitakyushu 804-8550Japan

In this.s.ort paper,we have treated the aerodynamic performance of micro downwind rotor with coning s.ft blades.*** tes. wind rotor has.the tip diameter of 1.5 m and three two-dimens.onal NACA0018 blades.of 0.15 m chord whos. material is.light,s.ft and pliable foam plas.ic for perfect *** the wind tunnel tes.,it is.realized that the performance is.manageable by the coning angle of the rotor *** the pres.nt cas.,an improvement of the performance in lower wind s.eeds.is.achieved by us.ng the coning blade of 20°.Bes.des.owing to the tors.onal deformation of very s.ft blade,the s.lf-power control characteris.ic is.obs.rved in every tes. rotor regardles. of coning angle in the range of 0°-20° under the wind s.eed les. than 12 m/s.

关键词： micro wind turbine downwind s.lf-output-control coning angle s.ft blade aerodynamic performance

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s.udy on an Unders.ot Cros.-Flow Water Turbine

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Journal of Thermal s.ience 2014年第3期23卷 239-245页

作者： Yas.yuki nishi Terumi Inagaki Yanrong Li Ryota Omiya Junichiro Fukutomi Department of Mechanical Engineering Ibaraki University 4-12-1 Nakanarusawa-choHitachi-shi Ibaraki 316-8511JAPAN Graduate s.hool of s.ience and Engineering Ibaraki University 4-12-1 Nakanarusawa-choHitachi-shi Ibaraki316-8511JAPAN Ins.itute of Technology and s.ience The University of Tokushima 2-1 Minamijosanjima-cho Tokushima-shiTokushima 770-8506 JAPAN

This.s.udy aims.to develop a water turbine s.itable for ultra-low heads.in open channels. with the end goal being the effective utilization of unutilized hydroelectric energy in agricultural water channels. We performed tes.s.by applying a cros.-flow runner to an open channel as.an unders.ot water turbine while attempting to s.mplify the s.ructure and eliminate the cas.ng. We experimentally inves.igated the flow fields.and performance of water tur- bines.in s.ates.where the flow rate was.cons.ant for the unders.ot cros.-flow water turbine mentioned above. In addition, we compared exis.ing unders.ot water turbines.with our unders.ot cros.-flow water turbine after at- taching a bottom plate to the runner. From the res.lts. we were able to clarify the following. Although the effec- tive head for cros.-flow runners.with no bottom plate was.lower than thos. found in exis.ing runners.equipped with a bottom plate, the power output is.greater in the high rotational s.eed range becaus. of the high turbine ef- ficiency. Als., the runner with no bottom plate differed from rtmners.that had a bottom plate in that no water was.being wound up by the blades.or retained between the blades. and the former received twice the flow due to the flow-through effect. As.a res.lt, the turbine efficiency was.greater for runners.with no bottom plate in the full ro- tational s.eed range compared with that found in runners.that had a bottom plate.

关键词： Water Turbine Cros.-Flow Turbine Open Channel Performance Flow Vis.alization

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Uns.eady Flow Analys.s.of an Axial Flow Hydraulic Turbine with Collection Devices.Compris.ng a Different Number of Blades

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Journal of Thermal s.ience 2015年第3期24卷 239-245页

作者： Yas.yuki nishi Terumi Inagaki Yanrong Li s.u Hirama Norio Kikuchi Department of Mechanical Engineering Ibaraki University 4-12-1 Nakanarusawa-cho Hitachi-shi Ibaraki 316-8511 JAPAN Graduate s.hool of s.ience and Engineering Ibaraki University 4-12-1 Nakanarusawa-cho Hitachi-shi Ibaraki 316-8511 JAPAN Ibas.i Ltd. 4-7-10 Kamine-cho Hitachi-shi Ibaraki 317-0064 JAPAN

We previous.y devis.d a new type of portable hydraulic turbine that us.s.the kinetic energy of an open-channel flow to improve output power by catching and accelerating the flow. The turbine contains.an axial flow runner with an appended collection device and a diffus.r s.ction that is.not axis.mmetric. The objective of this.s.udy is.to determine how interference between the collection device and the runner influences.performance characteris.ics.of the turbine. We inves.igated the performance characteris.ics.of the turbine and flow field for different numbers.of blades.during both uns.eady and s.eady flow. During an uns.eady flow, the maximum values.of power coefficients.for three and two blades.increas.d by approximately 8.8% and 21.4%, res.ectively, compared to thos. during a s.eady flow. For the three-blade runner, the power coefficient s.owed s.all fluctuations. but for the two-blade runner, the power coefficient s.owed large fluctuations. Thes. fluctuations.in the power coefficient are attributed to fluctuations.in the loading coefficient, which were generated by interference between the runner and the diffus.r s.ction of the collection device.

关键词： Hydraulic Turbine Runner Collection Device Performance Uns.eady Flow Analys.s

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NANOMECHANICAL MAPPING OF CARBON BLACK REINFORCED NATURAL RUBBER BY ATOMIC FORCE MICROs.OPY

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Chines. Journal of Polymer s.ience 2007年第1期25卷 35-41页

作者： Tos.io nishi Hideyuki Nukaga s. Fujinami Ken Nakajima Department of Organic and Polymeric Materials Graduate School of Science and EngineeringTokyo Institute of Technology2-12-1 O-okayamaMeguro-kuTokyo 152-8552Japan

Atomic force micros.opy （AFM） has.the advantage of obtaining mechanical properties.as.well as.topographic information at the s.me time. By analyzing force-dis.ance curves.meas.red over two-dimens.onal area us.ng Hertzian contact mechanics. Young＇s.modulus.mapping was.obtained with nanometer-s.ale res.lution. Furthermore, the s.mple deformation by the force exerted was.als. es.imated from the force-dis.ance curve analys.s. We could thus.recons.ruct a real topographic image by incorporating apparent topographic image with deformation image. We applied this.method to carbon black reinforced natural rubber to obtain Young＇s.modulus.dis.ribution image together with recons.ructed real topographic image. Then we were able to recognize three regions. rubber matrix, carbon black （or bound rubber） and intermediate regions. Though the exis.ence of thes. regions.had been inves.igated by puls.d nuclear magnetic res.nance, this.paper would be the firs. to report on the quantitative evaluation of the interfacial region in real s.ace.

关键词： AFM, Natural rubber Carbon black Young's.modulus Force-dis.ance curve.

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