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Astrodynamics 2024年第1期8卷 47-60页

作者： Yuki kubo Toshihiro Chujo Institute of Space and Astronautical Science Japan Aerospace Exploration AgencyKanagawa252-5210Japan Department of Mechanical Engineering Tokyo Institute of TechnologyTokyo152-8550Japan

The solar sail is one of the most promising space exploration systems due to its theoretically infinite specific impulse achieved through solar radiation pressure(SRP).Recently,researchers have proposed“transformable spacecraft”capable of actively reconfiguring their body configurations using actuatable *** spacecraft,if used similarly to solar sails,are expected to significantly enhance orbit and attitude control capabilities owing to their high redundancy in control degrees of ***,controlling them becomes challenging due to their large number of inputs,leading previous researchers to impose strong constraints to limit their potential control *** study focuses on novel attitude control techniques for transformable spacecraft under *** developed two methods,namely,joint angle optimization to obtain arbitrary SRP force and torque,and momentum damping control driven by joint angle *** proposed methods are formulated in a general manner and can be applied to any transformable spacecraft comprising front faces that can predominantly receive the SRP on each *** validity of our proposed method is confirmed through numerical *** study contributes to making most of the high control redundancy of transformable spacecraft without the need for expendable propellants,thus significantly enhancing the orbit and attitude control capabilities.

关键词： solar sail transformable spacecraft attitude-joint coupled motion attitudestabilization

Hepatoma-derived growth factor expression as a prognostic marker in cervical cancer

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World Journal of Obstetrics and Gynecology 2015年第1期4卷 16-23页

作者： Misa Song Miki Tomoeda Yu-Feng Jin chiaki kubo Hidenori Yoshizawa Masanori Kitamura Shigenori Nagata Yukinobu Ohta Shoji Kamiura Hideji Nakamura Yasuhiko Tomita Department of Pathology Osaka Medical Center for Cancer and Cardiovascular Diseases Department of Gynecology Osaka Medical Center for Cancer and Cardiovascular Diseases Department of Internal Medicine Nissay Hospital

AIM： To examine the association of hepatoma-derived growth factor （HDGF） expression with the prognosis of patients with cervical cancer of the uterus （CC）. METHODS： HDGF is a unique nuclear growth factor, and it may play an important role in the development and progression of carcinoma. HDGF expression in 88 CC patients aged 23 to 76 years （median, 54 years） was analyzed by immunohistochemistry. A rabbit polyclonal antibody against the C-terminal amino acids （aa 231-240） of the human HDGF sequence was used as primary antibody at a dilution of 1：5000. This specific anti-HDGF antibody was purified using C-terminal peptide-conjugated Sepharose columns. Staining of endothelial cells in the noncancerous areas of each specimen was used as an internal positive control. Samples with more than 80% of tumor cells showing positive immunoreactivity in both the nucleus and cytoplasm were regarded as HDGF index level 2,more than 80% positive immunoreactivity in either the nucleus or cytoplasm as level 1, and less than 80% in both the nucleus and cytoplasm as level 0. The chi-square test and Fisher’s exact probability test were used to examine the relationship between HDGF expression and clinicopathologic parameters, and statistical significance was examined by the log-rank test. Multivariate analysis of factors related to survival was performed using Cox’s proportional hazards regression model. Statistical signifcance was set at P 〈 0.05. RESULTS： The five-year overall survival rate was 82.9%. Fourteen patients died due to tumors, nine of whom had tumor recurrence at 2-21 mo （median, 10 mo） after surgery. Tumor recurrence in five patients was determined at the time of the patients’ deaths. Nineteen cases were regarded as HDGF index level 0, 11 as level 1, and 58 as level 2. Patients with level 2 expression showed higher rates of histological classification of keratinized squamous cell carcinomaand adenosquamous carcinoma （44.8% of level 2 patients and 13.3% in levels 0 and 1）, de

关键词： Hepatoma-derived growth factor Prognosis Cervical cancer Immunohistochemical analysis Multiva-riate analysis

Quantification of the Vertical Load Applied to the Pavement during Cornering Maneuver of a Battery Electric Commercial Vehicle

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Journal of Traffic and Transportation Engineering 2024年第5期12卷 207-213页

作者： Pablo kubo Ney Siqueira Gilberto Grossl Luis Welin Mairon Dobicz Marcio Andrade Department of Complete Vehicle Volvo Group North AmericaGreensboro 27409USA Department of Complete Vehicle Volvo Trucks BrazilCuritiba 81260-900Brazil

The wheel loads of heavy trucks are the major source of pavement damage,given the repeated loadings imposed by them due to transient events and surface *** related studies focus on steady-state context regarding simplified vehicle’s parameters and ideal pavement conditions,this paper aims to analyze the vertical load applied to the pavement by considering cornering maneuver as a transient event,on a battery electric vehicle *** this concern,measurements were performed on a rigid truck,with two steering front axles,in a closed course proving *** relationship has been presented between vehicle’s speed,lateral acceleration and transferred vertical load for a given curve radius of 85.6 m and 3.7°of transversal *** measurements results indicated that for every 10 km/h increasing on the vehicle’s speed,additional 110 kgf will be transferred to the pavement on the outer side of the cornering *** value itself could not be considered high,but it will be also added to the static load,or overload in some truck applications.

关键词： Load transfer durability vehicle dynamics

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中国古代芍药文献考释

自然科学史研究 2024年第1期43卷 31-47页

作者：久保辉幸浙江工商大学东亚研究院日本研究中心杭州310018

芍药早在春秋时即见记载,是拥有很长文化史的花卉。魏晋南北朝时期开始出现几首咏物诗歌,也孕育出如女诗人辛萧《芍药花颂》这样的芍药名篇。至北宋,扬州的芍药种植空前繁盛,同时受以牡丹谱为代表的植物谱录影响,芍药著谱活动兴起。在1... 详细信息

芍药早在春秋时即见记载,是拥有很长文化史的花卉。魏晋南北朝时期开始出现几首咏物诗歌,也孕育出如女诗人辛萧《芍药花颂》这样的芍药名篇。至北宋,扬州的芍药种植空前繁盛,同时受以牡丹谱为代表的植物谱录影响,芍药著谱活动兴起。在11世纪70年代,刘攽、王观、孔武仲相继寄居扬州,共留下3本芍药谱,在短短数年间集中出现同类植物谱录是极为罕见的。事实上,孔谱之后亦有艾丑的芍药谱,至明代,曹守贞又编撰《维扬芍药谱(合纂)》。本文对这5部芍药谱的成书时间、撰者经历、内容等进行探讨,并针对各谱版本进行比较甄别。此外,对绍熙《广陵志》、《花镜》等其他文献中出现的芍药品种及其相关记载,本文也做简单梳理,以进一步揭开中国芍药史的神秘面纱。

关键词：芍药谱艾丑曹守贞《全芳备祖》文献学

同方期刊数据库博看期刊评论

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反面的反面东京裹|URA鞋店

室内设计与装修 2024年第5期 92-95页

作者： Hiroto kubo 无不详 Insideoutltd. 日本

URA是时尚设计师三原康裕的鞋品概念店,坐落在东京原宿神宫前的一条小街上。原建筑应该算是一间半地下室,昏暗且隐蔽的环境很容易被误认为是邦德的地下实验室。在紧凑的47 m2内,东京室内设计事务所Insideout打造了一个巧妙的空间,为展... 详细信息

URA是时尚设计师三原康裕的鞋品概念店,坐落在东京原宿神宫前的一条小街上。原建筑应该算是一间半地下室,昏暗且隐蔽的环境很容易被误认为是邦德的地下实验室。在紧凑的47 m2内,东京室内设计事务所Insideout打造了一个巧妙的空间,为展示从多角度考虑环境和社会责任的产品,提供了一个挑战固有可持续设计理念的平台。尽管环境具有高度反光和耀眼的特点,但在荧光灯光的笼罩下,一种内在的宁静感悄然浮现。

关键词：半地下室室内设计鞋店地下实验室可持续设计理念荧光灯概念店

Two Tightly Linked Genes at the hsal Locus Cause Both F1 and F2 Hybrid Sterility in Rice

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Molecular Plant 2016年第2期9卷 221-232页

作者： Takahiko kubo Plant Genetics Laboratory National Institute of Genetics Mishima Shizuoka 411-8540 Japan Department of Genetics SOKENDAI (the Graduate University for Advanced Science) Mishima Shizuoka 411-8540 Japan STAY GREEN Co. Ltd. Kisarazu Chiba 292-0818 Japan Bioscience and Biotechnology Center Nagoya University Nagoya Aichi 464-8601 Japan Plant Breeding Laboratory Division of Genetics and Plant Breeding Department of Applied Genetics and Pest Management Faculty of Agriculture Kyushu University Fukuoka 812-8581 Japan These authors contributed equally to this article

Molecular mechanisms of hybrid breakdown associated with sterility (F2 sterility) are poorly understood as compared with those of F1 hybrid sterility. Previously, we characterized three unlinked epistatic loci, hybrid sterility-a1 (hsa1), hsa2, and hsa3, responsible for the F2 sterility in a cross between Oryza sativa ssp. indica and japonica. In this study, we identified that the hsa1 locus contains two interacting genes, HSA1a and HSA1b, within a 30-kb region. HSA1a-j (japonica allele) encodes a highly conserved plant-specific domain of unknown function protein (DUF1618), whereasthe indica allele (HSA1a-is) has two deletion mutations that cause disruption of domain structure. The second gene, HSA1b-is, encodes an uncharacterized proteinwith some similarity to a nucleotide-binding protein. Homozygous introgression of indica HSA1a-is-HSA1b-is alleles into japonica showed female gamete abortion at an early mitotic stage. The fact that the recombinant haplotype HSA1a-j-HSA1b-is caused semi-sterility in the heterozygous state with the HSA1a-is-HSA1b-is haplotype suggests that variation in the hsa1 locus is a possible cause of the wide-spectrum sterility barriers seen in F1 hybrids and successive generations in rice. We propose a simple genetic model to explain how a single causal mechanism can drive both F1 and F2 hybrid sterility.

关键词： hybrid sterility epistasis Oryza sativa DUF1618 protein embryo sac abortion

Study of Particle Behavior for Steady-State Operation in JT-60U

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Plasma Science and Technology 2006年第1期8卷 50-54页

作者： H.kubo Japan Atomic Energy Agency Naka-shiIbaraki-ken311-0193JapantheJT-60Team

This paper summarizes recent studies of particle balance in long pulse discharges, long-term erosion/deposition and hydrogen retention for carbon divertor tiles, and particle behavior in SOL and divertor plasmas related to the two foregoing topics in JT-60U. Global saturation of the particle inventory appeared in the later phase of an ELMy H-mode plasma after several long pulse discharges. As for carbon divertor tiles, erosion was dominant in the outer divertor, and deposition was dominant in the inner divertor. Hydrogen isotope concentration （H＋D）/C in the deposition layer was estimated to be -0.032. The SOL plasma flow towards the inner divertor was observed at the low-field-side midplane, and influence of the E, x B drift flow from the outer divertor to the inner divertor via the private region on the divertor particle flux was evaluated to be large in the attached divertor plasmas. The preferential deposition in the inner divertor can be a consequence of these flows. For direct observation of the hydrogen molecular behavior in the divertor plasmas, hydrogen molecular line emission was measured and the fall in the emission intensity with distance from the divertor plates was reproduced by calculation with a neutral transport code and a collisional radiative modeling code.

关键词： tokamak divertor SOL carbon hydrogen

The Roles of Nuclear Energy in Hydrogen Production

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Engineering 2022年第9期16卷 16-20页

作者： Shinji kubo Japan Atomic Energy Agency Ibaraki-ken 311-1393Japan

*** energy as primary energy and hydrogen energy as secondary energy Fossil resources are unevenly distributed on the earth and are a finite source of primary energy that is widely used in industry(factories,etc.),transportation(automobiles,etc.),and energy conversion(power generation,etc.).It must be said that the mass consumption of fossil resources is *** energies that can replace fossil-fuel-based energy include renewable energy and nuclear energy,while hydrogen energy has the potential to be a secondary energy source that can be widely used in industry for various purposes,including the use of hydrogen as raw material for chemical products,a reducing agent,and *** example,the International Energy Agency(IEA)has provided a roadmap[1]for achieving net-zero emissions by 2050,stating that about 530 Mt∙a^(-1)of global hydrogen is *** is about six times the hydrogen demand in 2020(about 90 Mt∙a^(-1)).

关键词： replace industry automobile

Existence and Asymptotic Behavior of Radially Symmetric Solutions to a Semilinear Hyperbolic System in Odd Space Dimensions

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Chinese Annals of Mathematics,Series B 2006年第5期27卷 507-538页

作者： Hideo kubo Kji kuboTA Department of Mathematics Osaka University Machikaneyama 1-1ToyonakaOsaka 560-0043Japan Department of Mathematics Hokkaido University Sapporo 060-0810Japan

This paper is concerned with a class of semilinear hyperbolic systems in odd space dimensions. Our main aim is to prove the existence of a small amplitude solution which is asymptotic to the free solution as t →-∞ in the energy norm, and to show it has a free profile as t →＋∞. Our approach is based on the work of [11]. Namely we use a weighted L^∞ norm to get suitable a priori estimates. This can be done by restricting our attention to radially symmetric solutions. Corresponding initial value problem is also considered in an analogous framework. Besides, we give an extended result of [14] for three space dimensional case in Section 5, which is prepared independently of the other parts of the paper.

关键词： Semilinear wave equations Asymptotic behavior Radially symmetric solution

Study of Choked Flows through a Convergent Nozzle

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Journal of Thermal Science 2010年第3期19卷 193-197页

作者： Kazunori kubo Yoshiaki MIYAZATO Kazuyasu MATSUO Department of Mechanical Systems Engineering Faculty of Environmental EngineeringThe University of Kitakyushu1-1 HibikinoWakamatsu-kuKitakyushu City808-0135Japan

When sonic nozzles of significantly smaller diameter are used as standard flow meters,the critical back pressure ratio is affected by the boundary layer at the nozzle ***,the effect of the boundary layer on choking criteria is still ***,the choking phenomenon of a convergent nozzle flow has been experimentally investigated using four convergent nozzles with the same diameter followed by a straight pipe of a variable *** a result,it is shown that the critical back pressure ratio is smaller than that for the steady one-dimensional is-entropic flow and decreases as the boundary layer thickness ***,the main flow Mach number at the nozzle exit is supersonic when the back pressure ratio is equivalent to the choking condition,and the Mach number increases as the boundary layer thickness increases.

关键词： Boundary Layer Convergent Nozzle Choked Flow Choking Pressure Ratio