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Plasma Science and Technology 2005年第2期7卷 2773-2776页

作者：肖炳甲 Shinichiro Kado Shin Kajita daisuge yamasaki Satoru Tanaka Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031China High temperature plasma research center the university of Tokyo Yayoi 2-11-16Bunkyo-kuTokyoJapan 113-0030 Graduate school of engineering department of quantum engineering and systems sciences the university of Tokyo

A novel fitting procedure is proposed for a better determination of H2 rovibrational distribution from the Fulcher-α band spectroscopy. We have recalculated the transition probabilities and the results show that they deviate from Franck-Condon approximation especially for the non-diagonal transitions. We also calculated the complete sets of vibrationally resolved cross sections for electron impact d3Ⅱu-X3Σg transition based on the semi-classical Gryzinski theory. An example of experimental study confirms that current approach provides a tool for a better diagnostics of H2 rovibrational distribution in electronic ground state.

关键词： Fulcher-a band rovibronic excitation hydrogen molecule

Direct Correlation among Telomere Length, Cellular Aging, and Rejuvenation Effects of Honey Child Powder

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Journal of Biosciences and Medicines 2024年第7期12卷 55-70页

作者： Naofumi Shiomi Keiko Watanabe Yuki Fujiwara Takae yamasaki Hideto Matsuyama Research Center for Membrane and Film Technology Kobe University Kobe Japan School of Human Sciences Kobe College Nishinomiya Japan Department of Chemical Science and Engineering Kobe University Kobe Japan

Purpose: Telomere length (TL) is an indicator of age;however, hormonal influences complicate individual aging. It remains unclear whether TL shortening is a direct factor in both individual and cellular aging. Therefore, we examined the direct relationship between TL and cellular senescence at the cellular level. Methods: Telomerase activity, TL, and gene expression were measured in cultured human lung-, fetal-, and skin-derived fibroblasts, human skin keratinocytes, and telomerase reverse transcriptase (TERT) gene-immortalized cells using detection kits, Cawthon’s method, and reverse transcription-quantitative polymerase chain reaction, respectively. Novel substances that elongate telomeres were screened to confirm cell rejuvenation effects. Results: Long-term cell culture of TIG-1-20 normal human fibroblasts resulted in TL shortening, decreased division rate, and senescence progression, whereas in OUMS-36T-2 cells, TL elongation via TERT gene transfer increased the division rate, reduced endoplasmic reticulum stress, and upregulated genes associated with young individuals, indicating that cellular rejuvenation occurs via TL elongation. In addition, a honey child powder (HCP) extract was found through screening, and the HCP extract strongly suppressed the menin gene, resulting in increased telomerase activity and extended cell lifespan. Upon addition of the HCP extract to skin fibroblasts, gene expression of moisturizing components, including collagen, hyaluronic acid, and elastin, increased, and exhibited a rejuvenating effect with an increase in elastin amount. Conclusions: TL elongation or shortening is involved in cell proliferation rate and cellular aging, and TL elongation rejuvenates cells. In addition, HCP extract has a rejuvenating effect on cells and is expected to be a rejuvenating compound.

关键词： Telomere Cellular Aging Telomerase Reverse Transcriptase Gene Rejuvenation Honey Child Powder

Inherited multimodal microstructure evolution of high-fracture-toughness Mg-Zn-Y-Al alloys during extrusion for the consolidation of rapidly solidified ribbons

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Journal of Magnesium and Alloys 2022年第9期10卷 2433-2445页

作者： Soya Nishimoto Michiaki yamasaki Yoshihito Kawamura Department of Materials Science Graduate School of Science and TechnologyKumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan Magnesium Research Center Kumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan

The mechanisms of multimodal microstructure evolution and the effects of microstructural factors on mechanical properties must be elucidated to design new alloys with superior *** this study,high-fracture-toughness and ductile Mg_(96.75)Zn_(0.85)Y_(2.05)Al_(0.35) alloys were developed using rapidly solidified(RS)ribbon-consolidation technique,and the inherited multimodal microstructure evolution during plastic flow consolidation of the RS ribbons was *** use of extrusion for plastic flow consolidation of the heat-treated RS ribbons produced a multimodal microstructure consisting of the worked grains with high Kernel average misorientation(KAM)angles(Group1),the ultrafine dynamically recrystallized(DRXed)grains with intermediate KAM angles(Group 2),and the fine DRXed grains with low KAM angles(Group 3).Groups 1 and 2 contribute to the alloy strengthening,while Group 3 contributes to improving ductility with strainhardening,resulting in enhancement of the fracture *** form the multimodal microstructure,it was necessary to apply plastic flow with equivalent strains of>2.3 to the heat-treated RS ribbons possessing duplex microstructures with different dispersions of the long-period stacking ordered phase.

关键词： Magnesium alloy Long-period stacking ordered phase Multimodal microstructure Rapid solidification Extrusion Dynamic recrystallization

Base flow separation for soil erosion simulation in a granitic forested headwater catchment using a process-based model, GeoWEPP

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International Journal of Sediment Research 2023年第4期38卷 494-502页

作者： Takuhei yamasaki Shoichiro Hamamoto Taku Nishimura The Graduate School of Agricultural and Life Sciences The University of Tokyo

Distributed erosion models, which simulate the physical processes of water flow and soil erosion, are effective for predicting soil erosion in forested catchments. Although subsurface flow through multiple pathways is dominant for runoff generation in forested headwater catchments, the process-based erosion model, Geo-spatial interface for Water Erosion Prediction Project(Geo WEPP), does not have an adequate subsurface component for the simulation of hillslope water flow. In the current study, the quick flow related to soil erosion during rainfall events is separated from the total hydrograph using base flow separation for Geo WEPP to use direct runoff to predict sediment discharge from a granitic-forested catchment in Japan. Water runoff and sediment discharge also are simulated using the conventional method that reproduces the total hydrograph, and the accuracy of the calculation and estimated erodibility parameters are evaluated. The proposed procedure reproduced the quick-flow runoff during rainfall and the cumulative sediment discharge from the catchment. Simultaneously, the proposed procedure overestimates water runoff during extreme weather events, such as typhoons. The estimated erodibility parameters for the hillslope soil were comparable to those of the surface soil in Japan using both the proposed procedure and the conventional one. Conversely, the channel erodibility obtained from the proposed procedure matched the observed sediment characteristics in the granitic forested catchment. The proposed procedure is a promising method to predict sediment discharge from forested catchments based on the geological features of the catchment.

关键词： Soil erosion Base flow separation GeoWEPP Headwater catchment Forest

Torque control strategy with V2X information for HEVs to minimize fuel consumption

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Control Theory and Technology 2022年第2期20卷 197-209页

作者： Yasutaka Okada Shunki Nishii Akihiro Takeshita Kazuki Harada Yudai yamasaki Department of Mechanical Engineering The University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan

Today,much information from traffic infrastructures and sensors of ego vehicle is *** such information has a potential for internal combustion engine vehicle to reduce fuel consumption in real *** this paper,a powertrain controller for a hybrid electric vehicle aiming to reduce fuel consumption is introduced,which uses information from traffic signals,the global positioning system and sensors,and the preceding *** study was carried out as a benchmark problem of engine and powertrain control simulation and modeling 2021(E-COSM 2021).The developed controller firstly decides reference acceleration of the ego vehicle using the traffic signal and the position information and the preceding vehicle *** acceleration and deceleration leading to increase in unnecessary fuel consumption is ***,the reference engine,generator,and motor torques are decided to achieve the reference acceleration and minimize fuel *** addition,the reference engine,generator and motor torques were decided by the given fuel consumption map for the engine,and by the virtual fuel consumption maps for the generator and the *** virtual fuel consumption is derived from the efficiency maps of the generator and the motor using a given equivalent factor,which converts electricity consumption to fuel for the generator and the *** this study,a controller was designed through the benchmark problem of E-COSM 2021 for minimizing total fuel consumption of the engine,the generator,and the *** developed controller was evaluated in driving *** result shows that operating the powertrain in efficient area is a key factor in reducing total fuel consumption.

关键词： Powertrain optimization Fuel consumption minimization Hybrid electric vehicle Speed following system

Multispectral Phenotyping and Genetic Analyses of Spring Appearance in Greening Plant, Phedimus spp.

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Plant Phenomics 2023年第2期5卷 353-367页

作者： Taeko Koji Hiroyoshi Iwata Motoyuki Ishimori Hideki Takanashi Yuji yamasaki Hisashi Tsujimoto The United Graduate School of Agricultural Sciences Tottori University4-101 Koyamacho minamiTottori-shiTottori 680-8553Japan Graduate School of Agricultural and Life Sciences The University of Tokyo1-1-1 Yayoi-chouBunkyoTokyo 113-8657Japan Arid Land Research Center Tottori University1390 HamasakaTottori-shiTottori 680-0001Japan

The change in appearance during the seasonal transitions in ornamental greening plants is an important *** particular,the early onset of green leaf color is a desirable trait for a *** this study,we established a method for phenotyping leaf color change by multispectral imaging and performed genetic analysis based on the phenotypes to clarify the potential of the approach in breeding greening *** performed multispectral phenotyping and quantitative trait locus(QTL)analysis of an F1 population derived from 2 parental lines of Phedimus takesimensis,known to be a drought and heat-tolerant rooftop plant *** imaging was conducted in April of 2019 and 2020 when dormancy breakage occurs and growth extension *** component analysis of 9 different wavelength values showed a high contribution from the first principal component(PC1),which captured variation in the visible light *** high interannual correlation in PC1 and in the intensity of visible light indicated that the multispectral phenotyping captured genetic variation in the color of *** also performed restriction site-associated DNA sequencing and obtained the first genetic linkage map of Phedimus *** analysis revealed 2 QTLs related to early dormancy *** on the genotypes of the markers underlying these 2 QTLs,the F1 phenotypes with early(late)dormancy break,green(red or brown)leaves,and a high(low)degree of vegetative growth were *** results suggest the potential of multispectral phenotyping in the genetic dissection of seasonal leaf color changes in greening plants.

关键词： breeding cultivar visible

2q37.3 Deletion with Complex Heart Defects Suggesting Interruption of Early Ventricular Looping

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Congenital Heart Disease 2022年第2期17卷 141-146页

作者： Sanam Safi Takato yamasaki David JGlidden Stephen PSanders Chrystalle Katte Carreon The Cardiac Registry Departments of CardiologyPathologyand Cardiac SurgeryBoston Children’s HospitalBostonUSA Department of Cardiology Gentofte University HospitalCopenhagenDenmark Department of Thoracic and Cardiovascular Surgery Mie University Graduate School of MedicineMieJapan Department of Pathology Cascade Pathology Services/Legacy HealthPortlandUSA Department of Pediatrics Boston Children’s Hospital and Harvard Medical SchoolBostonUSA Department of Pathology Boston Children’s Hospital and Harvard Medical SchoolBostonUSA

A maternally inherited 828 kb microdeletion of 2q37.3 manifested in a 3-week-old premature boy as left juxtaposition of the atrial appendages associated with tricuspid atresia,double outlet infundibulum,subvalvar pulmonary atresia,large secundum atrial septal defect,and right aortic arch with mirror-image branching,consistent with developmental arrest early in heart *** the best of our knowledge,no previous 2q37 deletion syndrome has been reported with such a severe cardiac ***,this case adds to the cardiac phenotypes identified in 2q37 deletion syndrome.

关键词： 2q37.3 deletion tricuspid atresia double outlet infundibulum juxtaposition of the atrial appendages right aortic arch subvalvar pulmonary atresia

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

在醒来转子相互作用扇子噪音，很多在传递频率(BPF ) 和它的泛音的片的交往的模式被产生它被定子和转子片等等的数字规定。在现在的学习，主导的模式被试试被第二等的声音从扬声器致动器压制。现在的系统的新奇特征之一是有领域可编程... 详细信息

在醒来转子相互作用扇子噪音，很多在传递频率(BPF ) 和它的泛音的片的交往的模式被产生它被定子和转子片等等的数字规定。在现在的学习，主导的模式被试试被第二等的声音从扬声器致动器压制。现在的系统的新奇特征之一是有领域可编程的门数组(FPGA ) 硬件和 LabVIEW 软件的控制板的采纳同步有在任意的扇子下面的旋转的片的相对地点的环绕地安装的扬声器致动器旋转速度。实验在 2004， 3150，和 4002 的三旋转速度的条件下面被进行[rpm ] 。在健全压力水平(系统程序设计语言) 的减小为所有三旋转速度被观察。在 BPF 的健全压力水平被减少约 13 [dB ] 为 2004 [rpm ] 大小写。

关键词：定子-转子系统技术性能抗噪音控制系统切割技术

Eight decades of compositional change in a managed northern hardwood landscape

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Forest Ecosystems 2023年第3期10卷 398-410页

作者： Mark J.Ducey Olivia L.Fraser Mariko yamasaki Ethan P.Belair William B.Leak University of New Hampshire Department of Natural Resources and the Environment114 James HallDurhamNH03824USA U.S.D.A.Forest Service White Mountain National Forest71 White Mountain DriveCamptonNH03223USA U.S.D.A.Forest Service Northern Research Station271 Mast RoadDurhamNH03824USA The Nature Conservancy Natural Climate SolutionsAfrica Regional Portland Office45 Exchange StSuite 303PortlandME04101USA

We analyzed over 8 decades of change in forest composition(represented by species proportion of basal area)and size class from more than 400 permanent plots located on the Bartlett Experimental Forest in the White Mountains of New *** data represent one of the longest-term landscape-scale records of forest change based on permanent plots in North *** analyzed the plots based on elevation class,land type indicating assumed successional direction(grouped into coniferous and deciduous),and inventory period within managed and unmanaged portions of the *** ongoing shift from small-to large-diameter stems is clear across all species,in response to the overall aging of the forest following exploitative harvesting in the 19th *** compositional changes include a continuing decline in shade-intolerant species(paper birch and aspen),along with the mid-tolerant yellow *** increase in red maple abundance through the early 1990s has leveled off or *** shade-tolerant species,increases in beech and red spruce were largely consistent with assumed land type on unmanaged plots,but heavy marking against diseased beech on managed plots restricted increase of that *** maple declined in abundance except where silvicultural intervention helped maintain *** contrast,eastern hemlock showed a continuing expansion at all elevations below 600 *** data continue to show little or no evidence of upward migration of species,despite evidence of recent regional change in ***,the BEF is poised for substantial changes when emerald ash borer and hemlock woolly adelgid,both of which are known to infest nearby areas,do arrive.

关键词： Northern hardwoods Succession Stand dynamics Silviculture

Synthesis of bulk lanthanum polyphosphate and other rare earth phosphates through hydrothermal hot-pressing

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Journal of Advanced Ceramics 2013年第4期2卷 301-307页

作者： Hiroaki ONODA Taro yamasaki Department of Informatics and Environmental Sciences Faculty of Life and Environmental SciencesKyoto Prefectural University1-5Shimogamo Nakaragi-choSakyo-kuKyoto 606-8522Japan

Bulk samples of lanthanum polyphosphate were synthesized through a hydrothermal hot-pressing(HHP)*** this process,pressing temperature,pressure and volume of water were varied in order to improve the density and strength of the resulting *** strength of the bulk samples was estimated through drilling and ultrasonic *** order to improve the strength of the materials,the use of microwave irradiation was *** polyphosphate formed porous bulk samples with a filling factor of approximately 70%,which was calculated from real and theoretical *** respect to machinable strength,a drilled hole greater than 7.0 mm in diameter was obtained on some bulk samples,and the diameter of the samples was 14 *** HHP process is a useful method for obtaining bulk samples of lanthanum *** lanthanum polyphosphate containing water crumbled easily to a powder form upon ***,these bulk samples retained their shape upon ultrasonication,despite containing water,after exposure to microwave irradiation,and also experienced minimal weight ***,to study the effect of microwave heating,bulk lanthanum orthophosphate,yttrium orthophosphate and polyphosphate were also examined.

关键词： lanthanum polyphosphate hydrothermal hot-pressing(HHP)process machinable strength vibration strength microwave heating