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On Extension of Isometries Between the Unit Spheres of Normed Space E and l^p(p>1)

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Acta Mathematica Sinica,English Series 2009年第7期25卷 1139-1144页

作者： Ji Jin YI rui dong wang School of Mathematics Liaocheng University Liaocheng 252059 P. R. China School of Mathematics Nankai University Tianjing 300071 P. R. China Department of Mathematics Tianjin University of Technology Tianjin 300191 P. R. China

In this paper, we study the extension of isometries between the unit spheres of normed space E and lP（p 〉 1）. We arrive at a conclusion that any surjective isometry between the unit sphere of normed space lP（p 〉 ... 详细信息

关键词： isometric mapping isometric extension strictly convex

Isometries and Additive Mapping on the Unit Spheres of Normed Spaces

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Acta Mathematica Sinica,English Series 2017年第10期33卷 1431-1442页

作者： rui dong wang Xu Jian HUANG Science of College Tianjin University of Technology Tianjin 300384 P. R. China

In this paper, we investigate isometric extension problem in general normed space. We prove that an isometry between spheres can be extended to a linear isometry between the spaces if and only if the natural positive homogeneous extension is additive on spheres. Moreover, this conclusion still holds provided that the additivity holds on a restricted domain of spheres.

关键词： Isometric extension additive mapping unit sphere angle

Therapeutic targets and biomarkers of tumor immunotherapy:response versus non-response

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Signal Transduction and Targeted Therapy 2022年第10期7卷 3784-3810页

作者： dong-rui wang Xian-Lin Wu Ying-Li Sun Bone Marrow Transplantation Center The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina Liangzhu Laboratory Zhejiang University Medical CenterHangzhouChina Institute of Hematology Zhejiang UniversityHangzhouChina Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy HangzhouChina Central Laboratory National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital&Shenzhen HospitalChinese Academic of Medical Sciences and Peking Union Medical CollegeShenzhenChina CAS Key Laboratory of Genomic Precision Medicine Beijing Institute of GenomicsChinese Academy of SciencesBeijingChina

Cancers are highly complex diseases that are characterized by not only the overgrowth of malignant cells but also an altered immune *** inhibition and reprogramming of the immune system play critical roles in tumor initiation and *** aims to reactivate antitumor immune cells and overcome the immune escape mechanisms of *** by immune checkpoint blockade and adoptive cell transfer,tumor immunotherapy has seen tremendous success in the clinic,with the capability to induce long-term regression of some tumors that are refractory to all other *** them,immune checkpoint blocking therapy,represented by PD-1/PD-L1 inhibitors(nivolumab)and CTLA-4 inhibitors(ipilimumab),has shown encouraging therapeutic effects in the treatment of various malignant tumors,such as non-small cell lung cancer(NSCLC)and *** addition,with the advent of CAR-T,CAR-M and other novel immunotherapy methods,immunotherapy has entered a new *** present,evidence indicates that the combination of multiple immunotherapy methods may be one way to improve the therapeutic ***,the overall clinical response rate of tumor immunotherapy still needs improvement,which warrants the development of novel therapeutic designs as well as the discovery of biomarkers that can guide the prescription of these *** from the past success and failure of both clinical and basic research is critical for the rational design of studies in the *** this article,we describe the efforts to manipulate the immune system against cancer and discuss different targets and cell types that can be exploited to promote the antitumor immune response.

关键词： immunotherapy prescription overcome

Low-viscosity oligoether esters(OEEs)as high-efficiency lubricating oils:Insight on their structure‒lubricity relationship

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Friction 2024年第6期12卷 1133-1153页

作者： Hanwen wang Ying wang Ping WEN Lin MA Mingjin FAN rui dong Chunhua ZHANG Shaanxi Key Laboratory of Phytochemistry College of Chemistry&Chemical EngineeringBaoji University of Arts and SciencesBaoji 721013China Key Laboratory of Shaanxi Province for Development and Application of New Transportation Energy Chang’an UniversityXi’an 710064China

Development of energy-efficient lubricants is a way to reduce energy consumption for transportation,with the tendency to design molecules that are beneficial in reducing the viscosity of synthetic *** esters(OEEs),as a low-viscosity ester base oil,have characteristics such as simple synthesis and excellent lubrication effect;however,the application of OEEs in tribology field has rarely been *** objective of the present study is to investigate the effect of structure on the lubricating performance of OEEs and to develop a predictive model for OEEs based on quantitative structure‒property relationship(QSPR)through a combination of experiment and statistical *** showed that glycol chains contribute positively to lubrication with the ether functional groups increasing the sites of *** to branched-chain OEEs,straight-chain OEEs exhibited reduced wear,which was mainly due to the thicker adsorption film formed by the straight-chain ***,carbon films were detected on lightly worn surfaces,indicating that OEEs underwent oxidation during the friction *** on the results of principal component analysis(PCA)and partial least squares(PLS),it could be found that the predictive models of viscosity‒temperature performance,thermal stability performance,coefficient of friction(COF),and wear volume(WV)performed well and *** them,COF and WV can be best predicted with an R^(2) of about 0.90.

关键词： oligoether esters(OEEs) low-viscosity ester friction wear quantitative structure-property relationship(QSPR)

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气动升力协同列车升力翼优化设计研究

风机技术 2024年第3期66卷 60-67页

作者：王瑞东张军倪章松高超武斌严日华成都流体动力创新中心西北工业大学航空学院

气动升力协同列车是一种新型高速列车的概念模型,旨在提高运行速度的同时兼顾列车整体耗能与寿命周期成本。其通过加装升力翼,提高列车的气动升力,从而减少列车轮毂磨损。为设计出适合现有高铁限界约束的升力翼,本文采用Hicks-Henne翼... 详细信息

气动升力协同列车是一种新型高速列车的概念模型,旨在提高运行速度的同时兼顾列车整体耗能与寿命周期成本。其通过加装升力翼,提高列车的气动升力,从而减少列车轮毂磨损。为设计出适合现有高铁限界约束的升力翼,本文采用Hicks-Henne翼型参数化方法和遗传算法,建立了考虑列车外型与高铁限界约束的气动优化方法,并利用此方法开展了翼型优化设计,以优化翼型为基础设计了加装翼梢小翼的三维升力翼模型。研究表明:采用本文优化设计方法得到的优化翼型,相比基础翼型,升力系数提升13%,阻力系数几乎不变。加装翼梢小翼可以有效的减小升力翼的气动阻力,通过对比不同外倾角和后掠角的小翼气动特性,设计出了一种外倾角为15°、后掠角为30°的较优升力翼模型,其最大升力系数可达到1.8247。

关键词：高速列车翼型优化翼梢小翼气动升力

Dynamic Response of A Group of Cylindrical Storage Tanks with Baffles Considering the Effect of Soil Foundation

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China Ocean Engineering 2024年第1期38卷 129-143页

作者： SUN Ying wang Jia-dong HUO rui-li ZHOU Ding GU Zhen-yuan QIAN wang-ping School of Transportation and Civil Engineering Nantong UniversityNantong 226019China Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang 212013China College of Civil Engineering Nanjing Tech UniversityNanjing 211816China

The sloshing in a group of rigid cylindrical tanks with baffles and on soil foundation under horizontal excitation is studied *** solutions for the velocity potential are derived out by the liquid subdomain *** models with mass-spring oscillators are established to replace continuous *** with the least square technique,Chebyshev polynomials are employed to fit horizontal,rocking and horizontal-rocking coupling impedances of soil,respectively.A lumped parameter model for impedance is presented to describe the effects of soil on tank structures.A mechanical model for the soil-foundation-tank-liquid-baffle system with small amount of calculation and high accuracy is proposed using the substructure *** analytical solutions are in comparison with data from reported literature and numerical codes to validate the effectiveness and correctness of the *** dynamic properties and seismic responses of the soil-tank system are given for the baffle number,size and location as well as soil parameter.

关键词： cylindrical tanks multiple annular baffles equivalent analytical model soil−structure interaction subdomain method dynamic response

Numerical simulation of melt flow and temperature field during DC casting 2024 aluminium alloy under different casting conditions

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China Foundry 2024年第4期21卷 387-396页

作者： Jin-chuan wang Yu-bo Zuo Qing-feng Zhu Jing Li rui wang Xu-dong Liu Key Laboratory of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Engineering Research Center of Advanced Materials Preparing Technology Ministry of EducationShenyang 110819China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Casting speed,casting temperature and secondary cooling water flow rate are the main process parameters affecting the DC casting *** parameters significantly influence the flow and temperature fields during casting,which are crucial for the quality of the ingot and can determine the success or failure of the casting *** simulation,with the advantages of low cost,rapid execution,and visualized results,is an important method to study and optimize the DC casting *** the present work,a simulation model of DC casting 2024 aluminum alloy was established,and the reliability of the model was ***,the influence of casting parameters on flow field and temperature field was studied in detail by numerical simulation *** show that with the increase of casting speed,the melt flow becomes faster,the depths of slurry zone and mushy zone increase,and the variation of slurry zone depth is greater than that of mushy *** an increase in casting temperature,the melt flow rate increases,the depth of the slurry zone becomes shallower,and the depth of the mushy zone experiences only minor *** simulation results further indicate that the increase of the flow rate of the secondary cooling water slightly reduces the depths of both slurry and mushy zone.

关键词： aluminium DC casting flow field temperature field numerical simulation

Combustion characteristics of millimeter-sized aluminum particles in fluidized bed under various O_(2)/CO_(2)/H_(2)O atmospheres Author links open overlay panel

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Particuology 2024年第8期91卷 315-322页

作者： Jialing Zhou rui Zhang dong Liu Key Laboratory of Thermal Control of Electronic Equipment Ministry of Industry and Information TechnologyNanjing210094China Advanced Combustion Laboratory School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing210094China

Aluminum is an attractive alternative fuel,but it burns very inefficiently due to the formation of a dense Al_(2)O_(3)layer which prevents O_(2)from diffusion to the surface of Al *** previous experiments,the combustion of millimeter-sized Al(mAl)particles in the fluidized bed has achieved a substantial increase in the combustion efficiency,but further improvements are still *** this study,the effects of reaction atmosphere on the fluidized combustion of mAl particles were *** experiments with different O_(2)/H_(2)O/CO_(2)concentrations were *** experimental results indicate that the combustion efficiency of mAl particles in fluidized bed increases as the mole fraction of O_(2),H_(2)O or CO_(2)increases,and the highest combustion efficiency can reach 38.7%.After the analysis of the oxide film on the surface of aluminum particles,it was found that it is easier to generate the unstableθ-Al_(2)O_(3)under CO_(2)atmosphere,and it is easier to generate the unstableγ-Al_(2)O_(3)andθ-Al_(2)O_(3)under H_(2)O *** unstable Al_(2)O_(3)film is more likely to be abraded in the fluidized bed,which leads to the effective improvement of the combustion efficiency.

关键词： Al combustion Fluidized bed Atmosphere Combustion efficiency

Effect of long reaction distance on gas composition from organic-rich shale pyrolysis under high-temperature steam environment

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International Journal of Coal Science & Technology 2024年第3期11卷 102-119页

作者： Lei wang rui Zhang Guoying wang Jing Zhao dong Yang Zhiqin Kang Yangsheng Zhao Key Laboratory of In-Situ Property Improving Mining of Ministry of Education Taiyuan University of TechnologyTaiyuan030024China The In-Situ Steam Injection Branch of State Center for Research and Development of Organic-Rich Shale Exploitation Taiyuan University of TechnologyTaiyuan030024China College of Mining Engineering Taiyuan University of TechnologyTaiyuan030024China School of Energy Science and Engineering Henan Polytechnic UniversityJiaozuo454002China

When high-temperature steam is used as a medium to pyrolyze organic-rich shale,water steam not only acts as heat transfer but also participates in the chemical reaction of organic matter pyrolysis,thus affecting the generation law and release characteristics of gas *** this study,based on a long-distance reaction system of organic-rich shale pyrolysis via steam injection,the effects of steam temperature and reaction distance on gas product composition are analyzed in depth and compared with other pyrolysis *** advantages of organic-rich shale pyrolysis via steam injection are then *** volume concentration of hydrogen in the gas product obtained via the steam injection pyrolysis of organic-rich shale is the highest,which is more than 60%.The hydrogen content increases as the reaction distance is extended;however,the rate of increase changes *** the reaction distance from 800 to 4000 mm increases the hydrogen content from 34.91%to 69.68%and from 63.13%to 78.61%when the steam temperature is 500℃ and 555℃,***,the higher the heat injection temperature,the smaller the reaction distance required to form a high concentration hydrogen pyrolysis environment(hydrogen concentration>60%).When the steam pyrolysis temperature is increased from 500℃ to 555℃,the reaction distance required to form a high concentration of hydrogen is reduced from 3800 to 800 *** with the direct retorting process,the volume concentration of hydrogen obtained from high-temperature steam pyrolysis of organic-rich shale is 8.82 and 10.72 times that of the commonly used Fushun and Kivite furnaces,*** pyrolysis of organic-rich shale via steam injection is a pyrolysis process in a hydrogen-rich environment.

关键词： Steam temperature Pyrolysis gas Hydrogen-rich Reaction distance Direct retorting