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Classification of archaic rice grains excavated at the Mojiaoshan site within the Liangzhu site complex reveals an Indica and Japonica chloroplast complex

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Food Production, Processing and Nutrition 2020年第1期2卷 148-159页

作者： Katsunori Tanaka Chunfang Zhao Ningyuan Wang Shinji Kubota Masaaki Kanehara nobuhiko kamijo Ryuji Ishikawa Hiroyuki Tasaki Minako Kanehara Bin Liu Minghui Chen Shin-ichi Nakamura Tetsuro Udatsu Cailin Wang Faculty of Agriculture and Life Science Hirosaki University3 BunkyoHirosakiAomori 036-8561Japan Institute of Food Crops Jiangsu Academy of Agricultural SciencesXiaolingweiNanjing 210014Jiangsu ProvinceChina Zhejiang Provincial Institute of Cultural Relics and Archaeology Gongshuqu Jiashanxincun26Hangzhou 310014Zhejiang ProvinceChina Center for Cultural Resource Studies Kanazawa University Kanazawa UniversityKakumaKanazawaIshikawa 920-1192Japan Department of Teacher Training and School Education Nara University of EducationTakahataNaraNara 630-8528Japan Archaeological Research Center Ehime University10-13 Dogo-hi-mataMatsuyamaEhime 790-8577Japan Agricultural Museum Faculty of AgricultureMiyazaki University1-1 Gakuen-Kibana-dai-NishiMiyazakiMiyazaki 889-2192Japan

To understand rice types that were utilized during postdomestication and in the modern age and the potential of genetic research in aged rice materials,archaeogenetic analysis was conducted for two populations of archaic rice grains from the Mojiaoshan site during the Liangzhu Period in China(2940 to 2840 BC).Sequencing after the PCR amplification of three regions of the chloroplast genome and one region of the nuclear genome showed recovery rates that were comparable to those in previous studies except for one chloroplast genome region,suggesting that the materials used in this work were appropriate for recovering genetic information related to domestication traits by using advanced *** after sequencing in these regions proved the existence of Japonica and Indica chloroplasts in archaic grains from the west trench,which were subsequently classified into eight plastid groups(type I–VIII),and indicated that these rice grains derived from different maternal lineages were stored together in storage houses at the Mojiaohsan *** these plastid groups,type V exhibited the same sequences as two modern Indica accessions that are utilized in basic studies and rice *** was inferred that part of the chloroplast genome of archaic rice has been preserved in modern genetic resources in these two modern Indica accessions,and the results indicated that rice related to their maternal ancestor was present at the Mojiaoshan site during the Liangzhu Period in *** usefulness of archaeogenetic analysis can be demonstrated by our research data as well as previous studies,providing encouragement for the possibility that archaeogenetic analysis can be applied to older rice materials that were utilized in the rice-domesticated period.

关键词： Agriculture Archaeology Archaic DNA Diversity Mojiaoshan Rice

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Active Control of Fan Noise

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Journal of Thermal Science 2008年第2期17卷 163-169页

作者： nobuhiko YAMASAKI Hirotoshi TAJIMA Department of Aeronautics and Astronautics Kyushu University

In the wake-rotor interaction fan noise, a number of the interacting modes at the blade passing frequency （BPF） and its harmonics are generated which are prescribed by the number of stator and rotor blades etc. In the present study, the dominant mode is tried to be suppressed by the secondary sound from the loudspeaker actuators. One of the novel features of the present system is the adoption of the control board with the Field Programmable Gate Array （FP（3A） hardware and the LabVIEW software to synchronize the circumferentially installed loudspeaker actuators with the relative location of rotational blades under arbitrary fan rotational speeds. The experiments were conducted under the conditions of three rotational speeds of 2004, 3150, and 4002 [rpm]. The reduction in the sound pressure level （SPL） was observed for all three rotational speeds. The sound pressure level at the BPF was reduced approximately 13 [dB] for 2004 [rpm] case, but not so large reduction was attained for other cases probably due to the inefficiency of the loudspeaker actuators at high frequencies

关键词： Stator-Rotor Interaction Anti Noise Control (ANC) Cut-on Control

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Molecular mechanisms of lesion-induced axonal sprouting in the corticofugal projection:the role of glial cells

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Neural Regeneration Research 2023年第6期18卷 1259-1260页

作者： Leechung Chang nobuhiko Yamamoto Laboratory of Cellular and Molecular Neurobiology Graduate School of Frontier BiosciencesOsaka UniversitySuitaOsakaJapan

After injury of the central nervous system(CNS),neuronal circuits are known to remodel for functional *** general,there are two strategies for the remodeling:axonal regeneration and sprouting(Figure 1A).Axonal regeneration is re-growth of injured neurons themselves,but axons hardly regenerate in the adult mammalian CNS(Silver and Miller,2004).On the other hand,axonal sprouting is new growth from intact or spared neurons to the denervated target by forming axon collaterals,compensating for damaged *** process is a more effective way for circuit remodeling,as it does not necessarily require long axonal elongation.

关键词： axonal projection Figure

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Large Eddy Simulation of Methane Non-premixed Flame Using the Laminar Flamelet Model

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Journal of Thermal Science 2011年第6期20卷 534-542页

作者： Mari Mitani Yuta Ito nobuhiko Yamasaki Department of Aeronautics and Astronautics Kyushu University

The large eddy simulation (LES) using the steady laminar flamelet model is applied to a simple turbulent jet flame with 33.2% H2,22.1% CH4 and 44.7% N2 at the Reynolds number of 15,200 in order to validate the numerical methods and to investigate the flame *** the validation,the detailed experimental data of DLR-A flame is *** numerical results are in reasonable agreement with experimental results except mass fractions of minor *** the flow field,the break-down of the potential core,the vortex structure and the mixing intensity are well *** the combustion field,mass fractions of major species (H2O,CO2,CO) are well predicted *** species are well predicted *** the present study,the simulations conducted on the Cartesian and cylindrical grids with approximately 6.6× 10 5 nodes are compared.

关键词： Cartesian grid cylindrical grid validation calculation

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Numerical Simulation for Fan Broadband Noise Prediction

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Journal of Thermal Science 2011年第1期20卷 58-63页

作者： Takaaki Hase nobuhiko Yamasaki Tsutomu Ooishi Kyushu University Fukuoka819-0395Japan IHI Corporation Nishitama-gunTokyo190-1297Japan

In order to elucidate the broadband noise of fan,the numerical simulation of fan operating at two different rotational speeds is carried out using the three-dimensional unsteady Reynolds-averaged Navier-Stokes (URANS) *** computed results are compared to experiment to estimate its accuracy and are found to show good agreement with experiment.A method is proposed to evaluate the turbulent kinetic energy in the framework of the Spalart-Allmaras one equation turbulence *** the calculation results,the turbulent kinetic energy is visualized as the turbulence of the flow which leads to generate the broadband noise,and its noise sources are identified.

关键词： Broadband Noise Fan Noise Rotor-Stator Interaction URANS

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Semi-polar GaN LEDs on Si substrate

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Science China(Technological Sciences) 2011年第1期54卷 38-41页

作者： nobuhiko SAWAKI Yoshio HONDA Department of Electrical and Electronic Engineering Aichi Institute of Technology Department of Electronics and Akasaki Research Center Nagoya University

Growth of semi-polar （1-101）GaN has been attempted on a patterned （001） silicon substrate adopting selective area MOVPE. The growth was initiated on （111） facets of the Si, which had been prepared by anisotropy etching in a KOH solution. A uni- form semi-polar layer was achieved by coalescence of stripes. Since the growth was performed on facets, the surface was atomically fiat in AFM surface analyses. By using a high temperature grown A1N nucleation layer, we achieved low threading dislocation density at the top most surface. Moreover, by tilting the c-axis of the GaN on the Si substrate, the effect of the thermal expansion coefficient mismatch was much reduced. As the result, we achieved a crack free （1-101）GaN template on （001）Si. On the thus prepared （1-101）GaN, a GalnN/GaN LED was fabricated, which showed excellent performance with weak quantum confined Stark effect.

关键词： GaN selective epitaxy semi-polar GaN MOVPE LED

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Large Eddy Simulation of Swirling Jet in a Bluff-Body Burner

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Journal of Thermal Science 2005年第1期14卷 28-33页

作者： Yohei FUJIMOTO Yuzo INOKUCHI nobuhiko YAMASAKI Department of Aeronautics and Astronautics Kyushu-University 6-10-1HakozakiHigashikuFukuoka812-8581JapanDepartment of Aeronautics and Astronautics Kyushu-University 6-10-1HakozakiHigashikuFukuoka812-8581JapanDepartment of Aeronautics and Astronautics Kyushu-University 6-10-1HakozakiHigashikuFukuoka812-8581Japan

The large eddy simulation (LES) is applied to an unconfined swirling flow of an air surrounding a bluff-body having a central jet of air, and the complicated flowfield that involves the recirculation and vortex breakdown is investigated. The Smagorinsky model is used as the sub-grid scale model. The results of the present numerical simulation are compared with the experimental data of the mean and stochastic root mean square (RMS) variations of two velocity components. Although the inflow conditions are specified in a simple manner, the obtained numerical results are in reasonable agreement with the experiments, except for a part of RMS variation values near downstream of the bluff body. The present numerical calculations can successfully reproduce the two characteristics of the flow, i.e., an upstream recirculation zone established just downstream of the burner plane and the additional recirculation zone established at the more downstream location.

关键词： large eddy simulation swirl bluff-body recirculation.

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Effect of a Curved Duct Upstream on Performance of Small Centrifugal Compressors for Automobile Turbochargers

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Journal of Thermal Science 2013年第1期22卷 92-96页

作者： Shigeta Kikuchi nobuhiko Yamasaki Akihiro Yamagata Department of Aeronautics and Astronautics Kyushu University Products Development Center IHI Corporation

Since the automobile turbochargers are installed in an engine compartment with limited space, the ducts upstream of the turbocharger compressor may be curved in a complex manner. In the present paper, the effect of a curved duct upstream on performance of small centrifugal compressors for automobile turbochargers is discussed. The computational fluid dynamics (CFD) analysis of a turbocharger compressor validated for the compressor model with the straight pipe applied to the compressor with the curved pipe are executed, and the deterioration of the performance for the curved pipe is confirmed. It is also found that the deterioration of compressor performance is caused by the interaction of the secondary flow and the impeller.

关键词： Cartesian grid cylindrical grid validation calculation

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Study on Rotational Frequency Noise in a Centrifugal Compressor for Automobile Turbochargers

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Journal of Thermal Science 2014年第1期23卷 53-59页

作者： Daichi Wakaki Yuta Sakuka nobuhiko Yamasaki Akihiro Yamagata Department of Aeronautics and Astronautics Kyushu University Products Development Center IHI Corporation

The rotational frequency noise(also known as the pulsation noise) due to the mistuning of impeller blade rows introduced at the manufacturing stage of the impellers is observed in the small-sized centrifugal compressor for automobile turbochargers. The present paper addresses the elucidation of the generating mechanism and parameter dependency such as the kind and degree of mistuning. In order to analyze numerically the rotational frequency noise due to mistuning, the unsteady computational fluid dynamics(CFD) of the whole compressor including volute is executed, and the resultant time history of the pressure is fed into the spectral analysis.

关键词： Centrifugal compressor Impeller Diffuser Volute Pulsation noise Mistuning

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Acoustic Noise from Tandem Wind Rotors of Intelligent Wind Power Unit

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Journal of Thermal Science 2010年第2期19卷 120-125页

作者： Koichi Kubo nobuhiko Mihara Akira Enishi Toshiaki Kanemoto Kyushu Institute of Technology:Sensui 1-1

The authors had invented the unique wind power unit composed of the large-sized front wind rotor,the small-sized rear wind rotor and the peculiar generator with the inner and the outer rotational armatures without the conventional *** unit is called "Intelligent Wind Power Unit" by the *** front and the rear wind rotors drive the inner and the outer armatures,respectively,while the rotational torque is counter-balanced between both armatures/wind *** paper discusses experimentally the acoustic noise from the front and the rear wind *** acoustic noise,in the counter-rotating operation,is induced mainly from the flow interaction between both rotors,and has the dominant power spectrum density at the frequency of the blade passing *** noise is caused mainly from the turbulent fluctuation due to the flow separation on the blade,when the rear wind rotor stops or rotates in the same direction as the front wind rotor.

关键词： Acoustic noise Wind turbine Tandem wind rotors Counter-rotation

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