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芜菁商用品种中S单株标本的分布

国外作物育种 2001年第4期20卷 48-48页

作者：邱敦莲 k.sakamoto 等

Density Modulation Experiments on HT-7 Tokamak

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Chinese Physics Letters 2004年第12期21卷 2458-2460页

作者： k.Tanaka 高翔揭银先 R.sakamoto k.Toi NationalInstituteforFusionScience 322-6Oroshi-choTokiJapan InstituteofPlasmaPhysics ChineseAcademyofSciencesHefei230031

Density modulation experiments are successfully conducted on HT-7 ohmic discharge to investigate particle transport coefficients: diffusion coefficients D and convection velocity V. The particle transport is studied at low (1.5 x 10(19) m(-3)) and high (3 X 10(19) m(-3)) density regimes. The clear differences are observed that D is 0.42m(2)/s and 0.17m(2)/s, V is 4.7 m/s (outward) and 1.6 m/s (inward) for low and high density plasmas respectively, where spatially constant D and V(r) = (r/a)V-0 were assumed for the analysis.

关键词： Plasma physics

Mercury concentration in hair samples from Chinese people in coastal cities

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Journal of Environmental Sciences 2008年第10期20卷 1258-1262页

作者： sakamoto Mineshi National Institute for Minamata Disease Ministry of the Environment4058-18 Hama Minamata City Kumamoto 867-0008 Japan.

This investigation was made to estimate current normal concentrations of total mercury in the hair of Chinese coastal people. Hair samples were collected from 659 healthy inhabitants in the areas along the coast and the rivers (such as Shanghai, Ningbo, Dalian, Xiamen, and Zhoushan) of China from Feb. 2005 to June 2006. Total mercury concentrations in the samples were analyzed by the cold vapor atomic adsorption spectrometry method (CVAAS). The results showed the geometric mean concentration of total mercur...

关键词： hair mercury Chinese people coastal cities

Saline Drinking Water and Salt in Diet:An Approximate Picture of the Situation in a Coastal Area of Southeastern Bangladesh

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International Journal of Disaster Risk Science 2017年第2期8卷 109-120页

作者： Maiko sakamoto Department of International Studies Graduate School of Frontier SciencesThe University of Tokyo

Coastal areas of Bangladesh have been facing increasing salinity of surface water and *** study provides the approximate scope of the problem in a coastal area of southeastern Bangladesh by using less-accurate,but lower-cost salinity measuring devices that enable local people to assess the *** local women were employed to monitor 10 tube wells each on a weekly basis,from mid-February to mid-May,during the2016 dry *** Information System and time series clustering were used to visualize the spatial distribution and seasonal change of the salinity *** addition,the tube well users were asked about the salt consumption in their daily ***-third of the monitored tube wells were found to contain more sodium than the tolerable level in terms of taste suggested by the World Health ***,the mean salinity level across all monitored tube wells was much *** salinity level varied depending on the depth of the tube wells rather than their locations or altitudes,and those deeper than 200 m were likely to be salt *** results of the diet survey showed that wealthier households tended to use more salt in their daily diets,but at the same time they tended to have deeper tube wells that are less likely to contain high levels of sodium.

关键词： Bangladesh Climate change Drinking water salinity Participatory water monitoring

The Tendency toward Higher Integration of *** Problems for Copper Based Lead Frame Materials

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功能材料 1993年第2期24卷 100-105页

作者： T sakamoto Japan Electronic Materials Society Japan 本刊通讯编委

The inereasing market needs forthe VLSI(Very Large Scale IntegratedCircuit)can be classified as follows:(1)Higher packaging dellsity(2)More advanced and multifarious

关键词： The Tendency toward Higher Integration of I.C.and Problems for Copper Based Lead Frame Materials 功能材料

Life Cycle Assessment of Biodegradable Plastics

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Journal of Shanghai Jiaotong university(Science) 2012年第3期17卷 327-329页

作者： sakamoto Yuki Research Institute of Public Affairs Nara Sangyo UniversityNara 636-8503Japan

Many industrial products made from fossil fuels cause the problems of global warming,depletion of fossil fuel resources and decrease of the land by *** this report,the amounts of CO2 emissions as the environmental load and the specific energy consumptions as the depletion of fossil fuel resources of biodegradable plastics and conventional plastic as food trays are compared using life cycle assessment *** amount of CO2 emission of PHB(poly(3-hydroxybutyrate-co-4-hydroxybutyrate)) tray was the smallest among those of trays of other *** specific energy consumption of SPCL(starch/polycaprolactone) was the smallest among those of trays of other *** clearly reveals that the utilization of the biodegradable plastics is an effective way of alternatives of the conventional plastics.

关键词： life cycle assessment biodegradable plastics CO2 emission specific energy consumption

Essentials of Proteolytic Machineries in Chloroplasts

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Molecular Plant 2017年第1期10卷 4-19页

作者： kenji Nishimura Yusuke kato Wataru sakamoto Institute of Plant Science and Resources Okayama University 2-20-1 Chuo Kurashiki Okayama 710-0046 Japan

Plastids are unique organelles that can alter their structure and function in response to environmental and developmental stimuli. Chloroplasts are one type of plastid and are the sites for various metabolic pro- cesses, including photosynthesis. For optimal photosynthetic activity, the chloroplast proteome must be properly shaped and maintained through regulated proteolysis and protein quality control mechanisms. Enzymatic functions and activities are conferred by protein maturation processes involving consecutive proteolytic reactions. Protein abundances are optimized by the balanced protein synthesis and degrada- tion, which is depending on the metabolic status. Malfunctioning proteins are promptly degraded. Twenty chloroplast proteolytic machineries have been characterized to date. Specifically, processing peptidases and energy-driven processive proteases are the major players in chloroplast proteome biogenesis, remod- eling, and maintenance. Recently identified putative proteases are potential regulators of photosynthetic functions. Here we provide an updated, comprehensive overview of chloroplast protein degradation ma- chineries and discuss their importance for photosynthesis. Wherever possible, we also provide structural insights into chloroplast proteases that implement regulated proteolysis of substrate proteins/peptides.

关键词： chloroplast biogenesis protease protein homeostasis

Theoretical analysis of nonlinear vibration characteristics of gear pair with shafts

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Theoretical & Applied Mechanics Letters 2022年第2期12卷 85-91页

作者： Tatsuhito Aihara kensho sakamoto Department of Mechanical Engineering Faculty of Science and EngineeringHosei University3-7-2 KajinochoKoganei-shiTokyoJapan

The circumferential vibration of a gear pair is a parametric excitation caused by nonlinear tooth stiffness,which fluctuates with *** addition,the vibration characteristics of the gear pair become complicated owing to the tooth profile error and *** is considered that the circumferential vibration of the gear pair is affected by the torsional vibration of the *** is important to understand quantitatively the vibration characteristics of the gear system considering the ***,the purpose of this research was to clarify the nonlinear vibration characteristics of a gear pair considering the influence of the shafts using theoretical *** achieve this objective,calculations were performed using equations of motion in which the circumferential vibration of the gear pair and the torsional vibration of the shafts were *** nonlinear tooth stiffness was represented by a sine *** influence of tooth separation was considered by defining a nonlinear function using backlash and the tooth profile *** the numerical calculations,both stable and unstable periodic solutions were obtained by using the shooting *** effect of the shafts on the gear system vibration were clarified by comparing the results in the cases in which the shaft was not considered,one shaft was considered,and both shafts were considered.

关键词： Nonlinear Vibration Gear Chaos Shaft Tooth separation

Level-of-Detail Rendering of Large-Scale Irregular Volume Datasets Using Particles

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Journal of Computer Science & Technology 2010年第5期25卷 905-915页

作者： Takuma kawamura Naohisa sakamoto koji koyamada Member, IEEE Graduate School of Engineering Kyoto University Kyoto 6068501 Japan Center for the Promotion of Excellence in Higher Education Kyoto University Kyoto 6068501 Japan

This paper describes a level-of-detail rendering technique for large-scale irregular volume *** is well known that the memory bandwidth consumed by visibility sorting becomes the limiting factor when carrying out volume rendering of such *** develop a sorting-free volume rendering technique,we previously proposed a particle-based technique that generates opaque and emissive particles using a density function constant within an irregular volume cell and projects the particles onto an image plane with *** the density function changes significantly in an irregular volume cell,the cell boundary may become prominent,which can cause blocky *** the number of the sub-pixels increases,the required frame buffer tends to be *** solve this problem,this work proposes a new particle-based volume rendering which generates particles using metropolis sampling and renders the particles using the ensemble average. To confirm the effectiveness of this method,we applied our proposed technique to several irregular volume datasets,with the result that the ensemble average outperforms the sub-pixel average in computational complexity and memory usage. In addition,the ensemble average technique allowed us to implement a level of detail in the interactive rendering of a 71-million-cell hexahedral volume dataset and a 26-million-cell quadratic tetrahedral volume dataset.

关键词： large-scale irregular volume level-of-detail volume rendering of unstructured meshes