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植物功能遥感与智慧农业应用

农业工程技术 2023年第23期43卷 159-159页

作者： Kenji Omasa eiichi ono Yasuhiro Ishigami Yo Shimizu Yoichi Araki 高崎保健福祉大学农学部东京大学

植物具有独特的3D空间结构，因不同器官、物种和群落而不同，且随着与环境相互作用而变化。与蒸腾、光合作用和生长等基本生物活动相关的各项功能也受到空间结构和环境的影响。通过信息和通信技术（ICT）促进智慧农业，有必要在单个或... 详细信息

植物具有独特的3D空间结构，因不同器官、物种和群落而不同，且随着与环境相互作用而变化。与蒸腾、光合作用和生长等基本生物活动相关的各项功能也受到空间结构和环境的影响。通过信息和通信技术（ICT）促进智慧农业，有必要在单个或群体层面以及二维或三维环境中，测量和利用植物细胞器官信息。为此，该研究介绍了利用无人机和地面激光雷达从相对较短距离对植物功能进行三维遥感的概况和实例，稻田水稻质量控制和叶绿素荧光成像在光合诊断中的应用，以及日本群马县高崎保健福祉大学建造的大量利用ICT的田间智能农场和智能温室。

关键词：遥感智慧农业智能温室物联网 ICT 图像分析

A Generalization of Hardy Spaces H^p by Using Atoms

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Acta Mathematica Sinica,English Series 2008年第8期24卷 1243-1268页

作者： eiichi NAKAI Department of Mathematics Osaka Kyoiku UniversityKashiwaraOsaka 582 8582Japan

Let X = （X, d,μ） The purpose of this paper is to be a space of homogeneous type in the sense of Coifman and Weiss. generalize the definition of Hardy space H^P（X） and prove that the generalized Hardy spaces have the same property as H^P（X）. Our definition includes a kind of Hardy- Orlicz spaces and a kind of Hardy spaces with variable exponent. The results are new even for the R^n case. Let （X, δ, μ） be the normalized space of （X, d, μ） in the sense of Macias and Segovia. We also study the relations of our function spaces for （X, d, μ） and （X, δ,μ）.

关键词： Hardy space Hard-Orlicz space variable exponent Campanato space space of homogeneous type

Singular and fractional integral operators on preduals of Campanato spaces with variable growth condition

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Science China Mathematics 2017年第11期60卷 2219-2240页

作者： NAKAI eiichi Department of Mathematics Ibaraki University

We investigate the boundedness of singular and fractional integral operators on generalized Hardy spaces defined on spaces of homogeneous type, which are preduals of Campanato spaces with variable growth condition. To... 详细信息

关键词： singular integral fractional integral Hardy space Campanato space variable exponent space of homogeneous type

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日本食用菌菌种产业的现状

食药用菌 2024年第2期32卷 88-94页

作者：木村荣一日本Kinokkusu株式会社

介绍日本食用菌生产及品种登记情况,菌株保藏的具体方法和解冻方式;指出复苏菌株可通过目视法、生理性方法、病毒基因诊断法和栽培试验法等确认菌株性能,并比较各方法优劣;简介现行菌株鉴定方法,分析菌种种性劣化的原因,指出菌种种性维... 详细信息

介绍日本食用菌生产及品种登记情况,菌株保藏的具体方法和解冻方式;指出复苏菌株可通过目视法、生理性方法、病毒基因诊断法和栽培试验法等确认菌株性能,并比较各方法优劣;简介现行菌株鉴定方法,分析菌种种性劣化的原因,指出菌种种性维持是待研究课题。

关键词：食用菌工厂化栽培菌种保藏种性维持品种鉴定

Simultaneous intermetallics suppression and residual-stress relaxation of heat-resistant Nb-interlayer-inserted Ti-6Al-4V/Si_(3)N_(4)joints via one-step transient liquid phase bonding and brazing

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Journal of Materials Science & Technology 2023年第8期139卷 79-91页

作者： Fei Shen Ong Hirobumi Tobe eiichi Sato Institute of Space and Astronautical Science Japan Aerospace Exploration Agency3-1-1 YoshinodaiChuoSagamihara 252-5210Japan Department of Materials Engineering Graduate School of EngineeringThe University of Tokyo7-3-1 HongoBunkyoTokyo 113-8656Japan

This work has successfully proposed a solution to produce robust Nb-interlayer-inserted Ti-6Al-4V/Si_(3)N_(4)joints optimized for a maximum operating temperature of 873 K;transient liquid phase bonding(TLPB)of Ti-6Al-4V/Nb side was carried out with Cu and Ni fillers to suppress brittle intermetallic compounds(IMCs),whereas brazing of Nb/Si_(3)N_(4)side was performed using a highly ductile Ti-added Ag-rich filler for effective residual-stress relaxation.A sound yet simple one-step bonding process incorporating simul-taneous TLPB and brazing was achieved with a relatively short holding time of 10 min at 1213 *** of Ti-6Al-4V/Nb side with Cu and Ni foils of 2-μm-thick each as a laminated filler suppressed brittle Ti-based IMCs and developed a homogenized microstructure consisting mainly of(α+β)-Ti via isothermal ***,brazing of Nb/Si_(3)N_(4)side with 100-μm-thick SILVER-ABA filler(92.75Ag-5Cu-1Al-1.25Ti mass%)foil enhanced interfacial bonding with sufficient total Ti content and accommodated residual stress better than conventional eutectic Ag-Cu-based fillers,and it was verified by finite element analysis with consideration of materials’temperature-dependent elasto-plastic *** joints with a bonding area of 10 mm×10 mm were tested via symmetrical four-point bending from room temper-ature(RT)to 873 K fractured from Nb/Si_(3)N_(4)*** re-heating the joints from RT to 673 K,frac-ture initiation gradually shifted from Si_(3)N_(4)towards interfacial-compounds/Si_(3)N_(4)interface and bending strengths maintained∼220 MPa as weakening of SILVER-ABA filler was compensated by residual-stress relaxation in Si_(3)N_(4).When tested at 873 K,joints fractured mainly across the Ag-rich solid solution in a ductile manner and bending strength degraded by∼20%to 171 MPa as weakening of SILVER-ABA filler dominated.

关键词： Transient liquid phase bonding Brazing Ceramics Residual stress Finite element analysis

Effect of Cavities inside Tube Banks on Acoustic Resonance

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Journal of Thermal Science 2010年第1期19卷 67-71页

作者： Hiromitsu HAMAKAWA Hidenobu MIYAGI eiichi NISHIDA Department of Mechanical Engineering Oita University700 DannoharuOita 870-1192Japan Cyuouhatsujyou Kougyou 503 Jyuuni-machiHita877-8501Japan Department of Mechanical Systems Engineering Shonan Institute of Technology1-1-25 Tujidou NisikaiganFujisawa251-8511Japan

In the present paper the attention is focused on the effect of small cavities inside in-line tube banks on acoustic resonance which occurred in the two-dimensional model of boiler. We measured the sound pressure level, the amplitude and the phase delay of acoustic pressures and the gap velocity. As a result, we found many peak frequencies of sound pressure level with different Strouhal numbers, mainly about S1=0.15, 0.26 and 0.52. The variation of SPL for S,=0.26, 0.52 components in the tube banks with cavities was the same as the result of no cavities. The existence of cavities inside in-line tube banks caused the resonance of St=0.15. And the acoustic resonance of the first mode in the transverse direction was generated if the small cavities existed inside the tube banks. This resonance was not generated from the tube banks of no cavities. The resonance onset velocity in the transverse mode was fairly slower than that of no cavities. It was easy to generate acoustic resonance when there were small cavities inside in-line tube banks.

关键词： Acoustic Resonance Flow Induced Noise In-line Tube Banks Cavity Boiler

Orlicz-Hardy spaces and their duals

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Science China Mathematics 2014年第5期57卷 903-962页

作者： NAKAI eiichi SAWANO Yoshihiro Department of Mathematics Ibaraki UniversityMitoIbaraki 310-8512Japan Department of Mathematics and Information Sciences Tokyo Metropolitan UniversityMinami-Ohsawa 1-1Hachioji-shiTokyo 192-0397Japan

We establish the theory of Orlicz-Hardy spaces generated by a wide class of *** class will be wider than the class of all the *** particular,we consider the non-smooth atomic *** relation between Orlicz-Hardy spaces and their duals is also *** an application,duality of Hardy spaces with variable exponents is *** work is different from earlier works about Orlicz-Hardy spaces H（Rn）in that the class of admissible functions is largely *** can deal with,for example,Ф（r）≡（rp1（log（e＋1/r））q1,0〈r≤1,r^p2 （log（e＋r））q2,r〉1,with p1,p2∈（0,∞）and q1,q2∈（.∞,∞）,where we shall establish the boundedness of the Riesz transforms on H（Rn）.In particular,is neither convex nor concave when 0〈p1〈1〈p2〈∞,0〈p21〈p1〈∞or p1=p2=1 and q1,***（r）≡r（log（e＋r））q,then H（Rn）=H（logH）q（Rn）.We shall also establish the boundedness of the fractional integral operators I of order∈（0,∞）.For example,I is shown to be bounded from H（logH）1^1-α/n（Rn）to Ln/（n-α）（log L）（Rn）for 0〈α〈n.

关键词： Hardy space Orlicz space atomic decomposition Campanato space bounded mean oscillation

Effect of DOPO-containing Flame Retardants on Poly（lactic acid）： Non-flammability, Mechanical Properties and Thermal Behaviors

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Chemical Research in Chinese Universities 2017年第1期33卷 143-149页

作者： GU Liqiang QIU Jianhui SAKAI eiichi Department of Machine Intelligence and Systems Engineering Faculty of Systems Science and Technology Akita Prefectural University Yurihonjo 015-0055 Japan

The flame retardancies of three kinds of 9,10-dihydro-9-oxa-10-phosphaphenan-threne 10-oxide（DOPO）- containing flame retardant（A1, A2, A3）/poly（lactic acid）（PLA） composites[PA-n/（Ax-y）, n= 1--12; x= l, 2, 3, denoting three kinds of flame retardants; y= 10%, 20%, 30%, 40%, denoting the mass fraction of Ax] were greatly enhanced by melt blending of flame retardant Ax with PLA, including twin-screw extrusion and injection-molding processes. With only 10%（mass fraction） of Ax added to PLA, good flame retardancy with limiting oxygen index（LOI） values of more than 33% was achieved. As the Ax mass fraction was further increased to 20%, PA-n/（Ax-20%） composites showed much better flame retardancy（LOI~〉35% and UL-94 V-0 rating）. Moreover, the thermal degradation behaviors and mechanical properties of PA-n/（Ax-y） composites were investigated via thermogravimetric analysis（TGA）, differen- tial thermal analysis（DTA）, tensile testing, notched impact-bar testing, and dynamic mechanical analysis（DMA）. TGA results show that PA-n/（Ax-y） composites have slower rate of mass loss and much higher char yield, compared to neat PLA. With the addition of Ax to PLA, the DTA and DMA results indicate slight variations in glass transition tcmpe- ratures（Tg） of PA-n/（Ax-y） composites. Based on TGA results under nonisothermal conditions, the thermal degrada- tion kinetics of PA-n/（Ax-y） composites were studied by KAssinger＇s and Ozawa＇s methods. These thermal degrada- tion dynamic analyses show lower activation energies（EK or Eo） for PA-n/（Ax-y） composites, corresponding to higher mass fractions of Ax（from 10% to 40%）. The PA-n/（Ax-y） composites with good flame retardancy and good mecha- nical properties obtained in this study could be potential candidates for fire- and heat-resistant applications in auto- motive engineering and building fields with more safety and excellent performance.

关键词： Poly(lactic acid) composite Flame retardancy Thermal degradation kinetics

Flow Induced Acoustic Resonance in In-line Tube Banks

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Journal of Thermal Science 2006年第3期15卷 226-232页

作者： Hiromitsu Hamakawa Tohru Fukano eiichi Nishida YoshikazuS atou Department of Mechanical Engineering Oita University 700 Dannoharu Oita 870-1192 Japan Department of Environmental Symbiosis Engineering Kurume Institute of TechnologyKamitsu-machi 2228 Kurume 830-0052 Japan Department of Mechanical Engineering Shonan Institute of Technology Tujido Nishi Kaigan1-1-25 Fujisawa 251-8511 Japan Honda Motor Co. Ltd. Japan

In the present paper the attention is focused on the relation between vortex shedding phenomena and acoustic resonance which occurred in the two-dimensional model of boiler. There were tube banks with in-line arrangement for small tube pitch ratio. We measured the sound pressure level, the phase delay of acoustic pressures, the spectrum of velocity fluctuation and the gap velocity. As a result, we found two peak frequencies of sound pressure level with different Strouhal numbers St, mainly about 0.26 and 0,52, The noise of St=0.26 was the resonance of transverse mode and St=0.52 was longitudinal mode. The vortex shedding of St=0.15 was generated inside the tube banks without acoustic resonance. As gap velocity increased, we observed that the peak level of spectrum was weak and broad-banded, The onset velocity of the acoustic resonance of longitudinal mode was lower than that of transverse mode.

关键词： acoustic resonance flow induced vibration vortex in-line tube banks