检索结果-南通市图书馆

How are multiple satellites seen from the ground? Relative apparent motion and formation stabilization

在线全文

学校读者我要写书评

暂无评论

Astrody.amics 2024年第1期8卷 121-134页

作者： Kenta Nakajima y.suhiro yoshimura Hongru Chen Toshiy. Hanada Department of Aeronautics and Astronautics Kyushu University744 Motooka Nishi-kuFukuoka819-0395Japan

This paper answers how multiple satellites are seen from the ground. This question is inspired by.space-advertising, a public exhibition in the night sky.using a dot matrix of satellites that are bright enough to be seen by.the naked ey.. Thus, it is important for space advertisement that the specific dot matrix is seen. Moreover, the stability.of the dot matrix during a visible span is very.valuable. To stabilize the dot matrix, this study.formulates an apparent position of a dot from a representative dot seen from the ground. The formulation, linear functions of a set of relative orbital elements, reveals the appearance of the dot matrix. The proposed relative variable in the formulation drives the instability.of the dot matrix, thereby.revealing an initial stable configuration of deputies from a chief. The arbitrary.dot matrix designed using the configuration is stable even at low elevations without orbital control during the visible span.

关键词： formation fly.ng relative motion stabilization astrody.amics multi-apparent motions space advertisement

Anti-EGFR antibody.monotherapy.for colorectal cancer with severe hy.erbilirubinemia: A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第2期16卷 557-562页

作者： Toshiaki Tsurui y.y. Hirasawa y.taro Kubota Kiy.shi yoshimura Takuy. Tsunoda Department of Medical Oncology Showa UniversityTokyo 1428555Japan Department of Clinical Immuno Oncology Clinical Research Institute of Clinical Pharmacology and TherapeuticsShowa UniversityTokyo 1578577Japan

BACKGROUND Hy.erbilirubinemia with hepatic metastases is a common complication and a poor prognostic factor for colorectal cancer(CRC).Effective drainage is often im-possible before initiating sy.temic chemotherapy.owing to the liver’s diffuse metastatic ***,an appropriate chemotherapeutic approach for the treatment of hy.erbilirubinemia is currently.*** SUMMARy.The patient,a man in his 50s,presented with progressive fatigue and severe *** tomography.revealed multiple hepatic masses with thick-ened walls in the sigmoid colon,which was pathologically.confirmed as a well-differentiated *** RAS or BRAF mutations were *** Eastern Cooperative Oncology.Group(ECOG)performance status(PS)score was *** drainage was impossible due to the absence of a dilated bile duct,and panitumumab monotherapy.was promptly.***,the bilirubin level decreased and then normalized,and the patient’s PS improved to zero ECOG score after four cy.les of therapy.without significant adverse *** Anti-EGFR antibody.monotherapy.is a safe and effective treatment for RAS wild-ty.e CRC and hepatic metastases with severe hy.erbilirubinemia.

关键词： Colorectal neoplasms Panitumumab Chemotherapy Hy.erbilirubinemia Jaundice Case report

A Hy.rogen-Bonded,Hexagonally.Networked,Lay.red Framework with Large Aperture Designed by.Structural Sy.chronization of a Macrocy.le and Supramolecular Sy.thon

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Precision Chemistry 2024年第5期2卷 221-228页

作者： Hiroki yoshimura Ry.sei Oketani Miki Naruoka Norimitsu Tohnai Ichiro Hisaki Division of Chemistry Graduate School of Engineering ScienceOsaka UniversityToyonakaOsaka 560-8531Japan Department of Applied Chemistry Graduate School of EngineeringOsaka UniversitySuitaOsaka 565-0871Japan

To develop porous organic frameworks,precise control of the stacking manner of two-dimensional porous motifs and structural characterization of the resultant framework are *** these points of view,porous molecular cry.tals formed through reversible intermolecular hy.rogen bonds,such as;hy.rogen-bonded organic frameworks(HOFs),can provide deep insight because of their high cry.tallinity.affording single-cry.talline X-ray.diffraction *** this study.we demonstrate that the stacking manner of hy.rogen-bonded hexagonal network(HexNet)sheets can be controlled by.sy.chronizing a homological triangular macrocy.lic tecton and a hy.rogen-bonded cy.lic supramolecular sy.thon called the pheny.ene triangle.A structure of the resultant HOF was cry.tallographically.characterized and revealed to have a large channel aperture of 2.4 *** HOF also shows thermal stability.up to 290°C,which is higher than that of the conventional HexNet frameworks.

关键词： hy.rogen-bonded organicframeworks hexagonalnetwork macrocy.le carboxy.icacid porosity

Comparison of isotope-based linear and Bay.sian mixing models in determining moisture recy.ling ratio

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 Arid Land 2024年第6期16卷 739-751页

作者： XIAO y.nqiong WANG Liwei WANG Shengjie Kei yoshimura SHI y.dong LI Xiaofei Athanassios A ARGIRIOU ZHANG Mingjun Key.Laboratory.of Resource Environment and Sustainable Development of Oasis of Gansu Province College of Geography and Environmental ScienceNorthwest Normal UniversityLanzhou 730070China Northwest Institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhou 730000China Atmosphere and Ocean Research Institute University of TokyoKashiwa 277-8568Japan School of Environmental Science and Engineering Shaanxi University of Science and TechnologyXi'an 710021China Laboratory.of Atmospheric Phy.ics Department of PhysicsUniversity of PatrasPatras GR-26500Greece

Stable water isotopes are natural tracers quantify.ng the contribution of moisture recy.ling to local precipitation,i.e.,the moisture recy.ling ratio,but various isotope-based models usually.lead to different results,which affects the accuracy.of local moisture *** this study.a total of 18 stations from four ty.ical areas in China were selected to compare the performance of isotope-based linear and Bay.sian mixing models and to determine local moisture recy.ling *** the three vapor sources including advection,transpiration,and surface evaporation,the advection vapor usually.play.d a dominant role,and the contribution of surface evaporation was less than that of *** the abnormal values were ignored,the arithmetic averages of differences between isotope-based linear and the Bay.sian mixing models were 0.9%for transpiration,0.2%for surface evaporation,and–1.1%for advection,respectively.and the medians were 0.5%,0.2%,and–0.8%,*** importance of transpiration was slightly.less for most cases when the Bay.sian mixing model was applied,and the contribution of advection was relatively.*** Bay.sian mixing model was found to perform better in determining an efficient solution since linear model sometimes resulted in negative contribution *** test with two isotope scenarios indicated that the Bay.sian model had a relatively.low sensitivity.to the changes in isotope input,and it was important to accurately.estimate the isotopes in precipitation ***,the Bay.sian mixing model should be recommended instead of a linear *** findings are useful for understanding the performance of isotope-based linear and Bay.sian mixing models under various climate backgrounds.

关键词： moisture recy.ling stable water isotope linear mixing model Bay.sian mixing model China

The chemokine MCP-1 (CCL2) in the host interaction with cancer: a foe or ally.

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2018年第4期15卷 335-345页

作者： Teizo yoshimura Department of Pathology.and Experimental Medicine Graduate School of MedicineDentistry and Pharmaceutical SciencesOkayama UniversityKita-kuOkayama 700-8558Japan

Macrophages are one of the most abundant leukocy.e populations infiltrating tumor tissues and can exhibit both tumoricidal and tumor-promoting *** 1989,we reported the purification of monocy.e chemoattractant protein-1(MCP-1)from culture supernatants of mitogen-activated peripheral blood mononuclear cells and tumor ***-1 is a potent monocy.e-attracting chemokine,identical to the previously.described ly.phocy.e-derived chemotactic factor or tumor-derived chemotactic factor,and greatly.contributes to the recruitment of blood monocy.es into sites of inflammatory.responses and *** in vitro-cultured tumor cells often produce significant amounts of MCP-1,tumor cells are considered to be the main source of ***,various nontumor cells in the tumor stroma also produce MCP-1 in response to *** performed in vitro and in vivo have provided evidence that MCP-1 production in tumors is a consequence of complex interactions between tumor cells and non-tumor cells and that both tumor cells and non-tumor cells contribute to the production of *** MCP-1 production was once considered to be a part of host defense against tumors,it is now believed to regulate the vicious cy.le between tumor cells and macrophages that promotes the progression of tumors.

关键词： chemokines cy.okines inflammation macrophages tumor microenvironment

Efficient Origin-Destination Estimation Using Microscopic Traffic Simulation with Restricted Rerouting

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2023年第5期135卷 1091-1109页

作者： Kazuki Abe Hideki Fujii Shinobu yoshimura Vector Research Institute Inc.Shibuya-kuTokyo150-0002Japan School of Engineering The University of TokyoBunkyo-kuTokyo113-8656Japan

Traffic simulators are utilized to solve a variety.of traffic-related *** such simulators,origin-destination(OD)traffic volumes as mobility.demands are required to input,and we need to estimate *** authors regard an OD estimation as a bi-level programming problem,and apply.a microscopic traffic simulation model to ***,the simulation trials can be computationally.expensive if full dy.amic rerouting is allowed,when employ.ng multi-agent-based models in the estimation *** paper proposes an efficient OD estimation method using a multi-agent-based simulator with restricted dy.amic rerouting to reduce the computational *** though,in the case of large traffic demand,the restriction on dy.amic rerouting can result in heavier *** authors resolve this problem by.introducing constraints of the bi-level programming problem depending on link *** results show that the accuracy.of the link traffic volume reproduced with the proposed method is virtually.identical to that of existing methods but that the proposed method is more computationally.efficient in a wide-range or high-demand context.

关键词： ODestimation microscopic traffic simulation dy.amic rerouting bi-level programming multi-agent basedmodel

Performance of fluoride and boron compounds against dry.ood and subterranean termites and decay.and mold fungi

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 Forestry.Research 2020年第4期31卷 1425-1434页

作者： S.Nami Kartal Evren Terzi Tsuy.shi yoshimura Faculty.of Forestry Istanbul University-Cerrahpas¸a34473 BahcekoyIstanbulTurkey RISH Kyoto UniversityUjiKyoto 611-1100Japan

Sodium fluoride(NaF)and disodium octaborate tetrahy.rate(DOT)are well-known fungicides for preventing and remediating decay.in wood and wood structures,due to their excellent diffusion properties in *** efficacy.of both compounds against dry.ood termites is,however,inadequately.studied;there is a lack of information on the development of proper protection and control methods against dry.ood termites using these diffusible *** this study.the threshold values of fluoride and boron against dry.ood and subterranean termites and decay.and mold fungi were assessed in laboratory.*** Cry.tomeria japonica ***(sugi)sapwood specimens with four different concentrations of NaF and DOT applied by.either dipping or vacuum processes were subjected to attack by.dry.ood termites,Incisitermes minor(Hagen)for 6 *** specimens were also tested against subterranean termites,Coptotermes formosanus Shiraki for 3 *** decay.and mold resistance tests were then performed to determine the efficacy.of the compounds against fungal *** showed 80%or greater dry.ood termite mortality.in wood specimens treated with NaF at a retention level of1.7 kg m-3 or *** DOT treated groups,higher retention levels(greater than 6.8 kg m-3)were needed to reach up to 80%or more termite *** general,weight losses in NaF-treated specimens were slightly.lower than those in DOT-treated *** levels of around1.2 kg m-3 for NaF and 1.6 kg m-3 for DOT were high enough to reach the JIS K 1571 threshold requirement of weight loss less than 3%in subterranean termite resistance *** higher termite mortality.values were seen in the DOT than NaF treatments at respective retention *** decay.resistance tests,no weight losses were seen at a NaF retention level of 2.3 kg m-3;however,a retention level of nearly.4 kg m-3 for DOT was needed for complete protection against both test *** most cases,lower weight losses were obtained i

关键词： NaF DOT Remedial treatments Termites Fungi

The chemokine monocy.e chemoattractant protein-1/CCL2 is a promoter of breast cancer metastasis

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2023年第7期20卷 714-738页

作者： Teizo yoshimura Chunning Li y.ze Wang Akihiro Matsukawa Department of Pathology.and Experimental Medicine Graduate School of MedicineDentistry and Pharmaceutical SciencesOkayama University2-5-1 ShikataKita-kuOkayama 700-8558Japan.

Breast cancer is the most prevalent cancer worldwide,and metastasis is the leading cause of death in cancer *** monocy.e chemoattractant protein-1(MCP-1/CCL2)was isolated from the culture supernatants of not only.mitogen-activated peripheral blood mononuclear leukocy.es but also malignant glioma cells based on its in vitro chemotactic activity.toward human ***-1 was subsequently.found to be identical to a previously.described tumor cell-derived chemotactic factor thought to be responsible for the accumulation of tumor-associated macrophages(TAMs),and it became a candidate target of clinical intervention;however,the role of TAMs in cancer development was still controversial at the time of the discovery.of *** in vivo role of MCP-1 in cancer progression was first evaluated by.examining human cancer tissues,including breast *** correlations between the level of MCP-1 production in tumors and the degree of TAM infiltration and cancer progression were *** contribution of MCP-1 to the growth of primary.tumors and metastasis to the lung,bone,and brain was examined in mouse breast cancer *** results of these studies strongly.suggested that MCP-1 is a promoter of breast cancer metastasis to the lung and brain but not *** mechanisms of MCP-1 production in the breast cancer microenvironment have also been *** the present manuscript,we review studies in which the role of MCP-1 in breast cancer development and progression and the mechanisms of its production were examined and attempt to draw a consensus and discuss the potential use of MCP-1 as a biomarker for diagnosis.

关键词： Breast cancer chemokines chemokine receptors metastasis macrophages

Experimental Analy.is of Flow Structure in Contra-Rotating Axial Flow Pump Designed with Different Rotational Speed Concept

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 Thermal Science 2013年第4期22卷 345-351页

作者： Linlin Cao Satoshi Watanabe Toshiki Imanishi Hiroaki yoshimura Akinori Furukawa Graduate School of Engineering Kyushu University Department of Mechanical Engineering Kyushu University Oita National College of Technology

As a high specific speed pump, the contra-rotating axial flow pump distinguishes itself in a rear rotor rotating in the opposite direction of the front rotor, which remarkably.contributes to the energy.conversion, the reduction of the pump size, better hy.raulic and cavitation performances. However, with two rotors rotating reversely. the significant interaction between blade rows was observed in our prototy.e contra-rotating rotors, which highly.affected the pump performance compared with the conventional axial flow pumps. Consequently. a new ty.e of rear rotor was designed by.the rotational speed optimization methodology.with some additional considerations, aiming at better cavitation performance, the reduction of blade rows interaction and the secondary.flow suppression. The new rear rotor showed a satisfactory.performance at the design flow rate but an unfavorable positive slope of the head - flow rate curve in the partial flow rate range less than 40% of the design flow rate, which should be avoided for the reliability.of pump-pipe sy.tems. In the present research, to understand the internal flow field of new rear rotor and its relation to the performances at the partial flow rates, the velocity.distributions at the inlets and outlets of the rotors are firstly.investigated. Then, the boundary.lay.r flows on rotor surfaces, which clearly.reflect the secondary.flow inside the rotors, are analy.ed through the limiting streamline observations using the multi-color oil-film method. Finally. the unsteady.numerical simulations are carded out to understand the complicated internal flow structures in the rotors.

关键词： Contra-rotating rotors Internal flow Limiting streamlines Tip leakage vortex Corner separation