检索结果-南通市图书馆

Journal of Integrative Plant Biology 2019年第7期61卷 836-852页

作者： Kazusato Oikawa Makoto hayashi Yasuko hayashi Mikio Nishimura Biomacromolecules Research Team RIKEN Center for Sustainable Resource Science2-1 HirosawaWakoSaitama 351-0198Japan Department of Bioscience Nagahama Institute of Bio-Scie nee and Technology1266 Tamura-ChoNagahama 526-0829Japan Department of Biology Faculty of scienceNiigata UniversityNiigata 950-2181Japan Department of Cell Biology National Institute for Basic BiologyOkazaki 444-8585Japan

The dynamic behavior of organelles is essential for plant survival under various environmental conditions. Plant organelles, with various functions,migrate along actin filaments and contact other types of organelles, leading to physical interactions at a specific site called the membrane contact site. Recent studies have revealed the importance of physical interactions in maintaining efficient metabolite flow between *** this review, we first summarize peroxisome function under different environmental conditions and growth stages to understand organelle interactions. We then discuss current knowledge regarding the interactions between peroxisome and other organelles, i.e., the oil bodies, chloroplast, and mitochondria from the perspective of metabolic and physiological regulation, with reference to various organelle interactions and techniques for estimating organelle interactions occurring in plant cells.

关键词： physical interaction plant peroxisomes live-cell

Synergistic effects of Pleistocene geological and climatic events on complex phylogeographic history of widespread sympatric species of Megaloptera in East Asia

在线全文

学校读者我要写书评

暂无评论

动物学研究 2024年第5期 1131页

作者： Ai-Li Lin Ming-Ming Zou Li-Jun Cao Fumio hayashi Ding Yang Xing-Yue Liu Department of Entomology China Agricultural University Sanya Institute of China Agricultural University International Joint Laboratory of Taxonomy and Systematic Evolution of Insecta Henan Institute of Science and Technology Institute of Plant and Environmental Protection Beijing Academy of Agriculture and Forestry Sciences Department of Biology Tokyo Metropolitan University

Unraveling the phylogeographic histories of species remains a key endeavor for comprehending the evolutionary processes contributing to the rich biodiversity and high endemism found in East Asia. In this study, we explored the phylogeographic patterns and demographic histories of three endemic fishfly and dobsonfly species(Neochauliodes formosanus, Protohermes costalis, and Neoneuromus orientalis) belonging to the holometabolan order Megaloptera. These species, which share a broad and largely overlapping distribution, were analyzed using comprehensive mitogenomic data. Our findings revealed a consistent influence of vicariance on the population isolation of Neoc. formosanus and P. costalis between Hainan, Taiwan, and the East Asian mainland during the early Pleistocene, potentially hindering subsequent colonization of the later diverged Neon. orientalis to these islands. Additionally, we unveiled the dual function of the major mountain ranges in East Asia, serving both as barriers and conduits, in shaping the population structure of all three species. Notably, we demonstrated that these co-distributed species originated from Southwest,Southern, and eastern Central China, respectively, then subsequently migrated along multi-directional routes,leading to their sympatric distribution on the East Asian mainland. Furthermore, our results highlighted the significance of Pleistocene land bridges along the eastern coast of East Asia in facilitating the dispersal of mountaindwelling insects with low dispersal ability. Overall, this study provides novel insight into the synergistic impact of Pleistocene geological and climatic events in shaping the diversity and distribution of aquatic insects in East Asia.

关键词：

来源：博看期刊

Asphericalizing the Light Collection Mirror for the 200-Point Thomson Scattering Diagnostic Installed on the Large Helical Device

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2011年第4期13卷 415-419页

作者： Kazumichi NARIHARA Hiroshi hayashi National Institute for Fusion Science

Shown is a possibility to make the image of a laser beam over a distance of 2.5 m, formed by the spherical multi-segment mirror installed in LHD, twice sharper by suitably adjusting the inclination of each segment mirror, which is equivalent to making the mirror surface aspherical. This will further enhance the attractiveness of a mirror-based Thomson scattering system.

关键词： Thomson scattering LHD aspherical mirror

Recommender system for discovery of inorganic compounds

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2022年第1期8卷 2084-2090页

作者： Hiroyuki hayashi Atsuto Seko Isao Tanaka Department of Materials Science and Engineering Kyoto UniversityKyotoJapan Nano Research Laboratory Japan Fine Ceramics Center(JFCC)NagoyaJapan

A recommender system based on experimental databases is useful for the efficient discovery of inorganic ***,we review studies on the discovery of as-yet-unknown compounds using recommender *** first method used compositional descriptors made up of elemental *** compositions registered in the inorganic crystal structure database(ICSD)were supplied to machine learning for binary *** other method did not use any descriptors,but a tensor decomposition technique was *** predictive performance for currently unknown chemically relevant compositions(CRCs)was determined by examining their presence in other *** to the recommendation,synthesis experiments of two pseudo-ternary compounds with currently unknown structures were ***,a synthesis-condition recommender system was constructed by machine learning of a parallel experimental data-set collected in-house using a polymerized complex *** scores for unexperimented conditions were then *** experiments under the targeted conditions found two yet-unknown pseudo-binary oxides.

关键词： method. inorganic system

SYSTEMATIC DESIGN OF SINGLE CARRIER OVERLAP FREQUENCY DOMAIN EQUALIZATION

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2010年第1期23卷 50-60页

作者： Wladimir BOCQUET Kazunori hayashi Hideaki SAKAI Oranqe Labs Tokyo France Telecom Japan Co.Ltd Department of Systems Science Graduate School of InformaticsKyoto University

This paper proposes a systematic design method of overlap frequency domain equalization(FDE) for single carrier (SC) transmission without a guard interval (GI).Based on the analysis of signal-to-interference-plus-noise ratio (SINR) of the equalizer output for each symbol,the authors adaptivelydetermine the block of the overlap FDE,where the block is defined as a set of symbols at the equalizeroutput with sufficiently low error rate,for a certain fixed sliding window size,which corresponds toa fast Fourier transform (FFT) window *** proposed method takes advantage of the fact thatthe utility part of the equalized signal is localized around the center of the FFT *** addition,the authors also propose to adjust the block size in order to control the computational complexity ofthe equalization per processed sample associating with the average bit error rate (BER) of the *** results show that the proposed scheme can achieve comparable BER performance to theconventional SC-FDE scheme with sufficient GI insertion for both the coded and uncoded cases withvarious modulation levels,while requiring lower computational complexity compared to the SC overlapFDE transmission with the fixed block.

关键词： Overlap frequency domain equalization single carrier transmission SINR.

Numerical Modeling of Neotectonic Movements and State of Stresses in the Central Seismic Gap Region,Garhwal Himalaya

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2008年第4期5卷 279-298页

作者： Ganesh Raj JOSHI Daigoro hayashi Simulation Tectonics Laboratory Faculty of ScienceUniversity of the RyukyusOkinawa 903-0213Japan

This paper presents finite element modeling （FEM） to simulate the present-day stress field and crustal deformation using NE-SW structural section in the central Seismic Gap region of the Garhwal Himalaya. Our study deals with the effect of geometrical characteristics and rock layer parameters on the upper crust. Modeling results show that two types of tectonic regimes developed in the central Seismic Gap region： the geotectonics of the northern part has been controlled by regional compression, whereas southern part is characterized by regional extension. Correspondingly, thrust faults are induced in the northern part and normal faults are extensively developed in the southern front. Those evidences noticeably indicate that the compressive tectonic environment of the Himalaya becomes change into the extensional tectonic regime in its front. The computed shear stress accumulation along the northern fiat of Main Himalayan Thrust （MHT） implies that considerable amount of interseismic stress is building up along the MHT system in the Himalaya, which ultimately release through the possible future great Himalayan earthquake （M 〉 8）. The comparison between our modeled stress field, faulting pattern and horizontal shortening rate with the distribution of the microseismic events, focal mechanism solutions, active faulting and GPS data in the central Seismic Gap region shows good agreement.

关键词： Neotectonic deformation stress distribution FE modeling central Seismic Gap NW-Himalaya

Modeling the Contemporary Stress Field and Deformation Pattern of Eastern Mediterranean

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2010年第4期21卷 365-381页

作者： S K Dwivedi D hayashi Simulation Tectonics Laboratory Faculty of ScienceUniversity of the Ryukyus

The contemporary stress field in the earth＇s crust is important and provides insights into mechanisms that drive plate motions. In this study, elastic plane stress finite element modeling incorporating realistic rock parameters was used to calculate the stress field, displacement field, and defor- mation of the plate interactions in the eastern Mediterranean. Modeled stress data for the African- Arabian-Anatolian plate interactions with fixed European platform correlate well with observed contemporary stress indicator from the world stress map （WSM） and focal mechanism of earthquakes; while displacement field agrees qualitatively well with GPS vectors and sense of motion indicated by focal mechanisms for large crustal earthquakes （Ms〉6） and plate motion models. Modeling result shows the direction of maximum horizontal compressive stress （σHmax） toward the direction of absolute motion of these plates. Large perturbations in σHmax orientations are shown to occur in and around tectonic boundaries between those plates. It is observed that, although the African plate acts mostly as indenter, which transmits the collisional motion from the Arabian plate to the Anatolian plate, in the current situation, the far-field stress, probably from the subduction in Aegean Arc, is needed to satisfy the contemporary stress field in Anatolia.

关键词： finite element model maximum horizontal stress seismieity crustal deformation Anatolia eastern Mediterranean.

Fault Type Analysis along the San Andreas Fault Zone: A Numerical Approach

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2010年第1期7卷 36-44页

作者： Matrika Prasad KOIRALA Daigoro hayashi Simulation Tectonics Laboratory Faculty of Science University of the Ryukyus

Finite Element (FE) modeling under plane stress condition is used to analyze the fault type variation with depth along and around the San Andreas Fault (SAF) zone. In this simulation elastic rheology was used and was thought justifiable as the variation in depth from 0.5 km to 20 km was considered. Series of calculations were performed with the variation in domain properties. Three types of models were created based on simple geological map of California, namely, 1) single domain model considering whole California as one homogeneous domain, 2) three domains model including the North American plate, Pacific plate, and SAF zone as separate domains, and 3) Four domains model including the three above plus the Garlock Fault zone. Mohr-Coulomb failure criterion and Byerlee's law were used for the calculation of failure state. All the models were driven by displacement boundary condition imposing the fixed North American plate and Pacific plate motion along N34°W vector up to the northern terminus of SAF and N50°E vector motion for the subducting the Gorda and Juan de Fuca plates. Our simulated results revealed that as the depth increased, the fault types were generally normal, and at shallow depth greater strike slip and some thrust faults were formed. It is concluded that SAF may be terminated as normal fault at depth although the surface expression is clearly strike slip.

关键词： Finite Element modeling plane stress fault type analysis San Andreas Fault zone rockdomain properties failure analysis

Automatic Generation of 3D Building Models with Multiple Roofs

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2008年第S1期13卷 368-374页

作者： Kenichi Sugihara Yoshitugu hayashi Faculty of Information Media Gifu Keizai University Graduate School of Environmental Studies Nagoya University

Based on building footprints (building polygons) on digital maps, we are proposing the GIS and CG integrated system that automatically generates 3D building models with multiple roofs. Most building polygons’ edges meet at right angles (orthogonal polygon). The integrated system partitions orthogonal building polygons into a set of rectangles and places rectangular roofs and box-shaped building bodies on these rectangles. In order to partition an orthogonal polygon, we proposed a useful polygon expression in deciding from which vertex a dividing line is drawn. In this paper, we propose a new scheme for partitioning building polygons and show the process of creating 3D roof models.

关键词： 3D building model 3D urban model automatic generation CG GIS polygon partitioning

Novel therapeutic approaches targeting L-type amino acid transporters for cancer treatment

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2017年第1期9卷 21-29页

作者： Keitaro hayashi Naohiko Anzai Department of Pharmacology and Toxicology Dokkyo Medical University School of Medicine Department of Pharmacology Chiba University Graduate School of Medicine

L-type amino acid transporters(LATs) mainly assist the uptake of neutral amino acids into cells. Four LATs(LAT1, LAT2, LAT3 and LAT4) have so far been identified. LAT1(SLC7A5) has been attracting much attention in the field of cancer research since it is commonly up-regulated in various cancers. Basic research has made it increasingly clear that LAT1 plays a predominant role in malignancy. The functional significance of LAT1 in cancer and the potential therapeutic application of the features of LAT1 to cancer management are described in this review.

关键词： LAT1 Amino acid transporter Molecular target drug Amino acid starvation response Signal transduction