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第八届东亚资源再生技术国际会议

作者： N.Kotake y.Miyano y.kanda T.Ishikawa T.Itabashi Department of Chemistry and Chemical Engineering Yamagata University 4-3-16 Jonan Yonezawa-shi Yamagata992-8510 Japan Department of Chemistry and Chemical Engineering Yamagata University 4-3-16 Jonan Yonezawa-shi Yamagata992-8510 Japan Department of Chemistry and Chemical Engineering Yamagata University 4-3-16 Jonan Yonezawa-shi Yamagata992-8510 Japan Mistui Mining Co. LTD. 1 Koh-machi Tochigi-shi Tochigi 328-8503 Japan Mistui Mining Co. LTD. 1 Koh-machi Tochigi-shi Tochigi 328-8503 Japan

＜正＞A demand for the aggregates is increasing in the field of civil industry and architectural industry and so on. In these industries, the particle size and shape of aggregates are important factors and especially spherical or rounded particles are desired. In Japan, crushed stone is widely used as the aggregate material for the pavement or the construction. In this study based on the frictional action of material each other, an autogenous grinding of crushed stone was performed in order to eliminate squarish particles and get rounded ones for better aggregate materials. The experimental apparatus is a stirred mill with 4 impellers and the mill is made of stainless steel. The feed size and the feed mass of crushed stone were constant respectively. The particle shape was measured in the particle size range of 20 mm - 2.36 mm, and was evaluated by the shape index（= diameter of circumcircle / thickness） and the circularity（= perimeter of circle of equal projected area / perimeter of particle）. As a result, a decrease in the shape index and an increase in the circularity of crushed stone were observed with increasing grinding time. Then, the shape index and the circularity had the limit value for the long time grinding. The tendencies in these variations were not changed by the measuring size. The limit values of the shape index and the circularity increased with decreasing measuring size respectively.

关键词： Autogenous grinding Stirred mill Crushed stone Particle shape

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以破碎力学为基础的超细磨矿研究

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国外稀有金属 1989年第3期 8-13页

作者： kanda,y 梅叶

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以单粒子撞碎实验结果为基础的超细粉磨的探讨

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国外建材科技 1990年第3期11卷 93-98,83页

作者： kanda,y 杜文博

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根据破碎力学研究超细磨矿

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国外金属矿选矿 1989年第8期26卷 1-6页

作者： y. kanda 杨秀媛

众所周知,磨矿过程的能量效率随着产品粒度减小而降低。本文根据破碎力学研究了获得超细颗粒的方法。我们把破碎能(粒度化小能)定义为弹性应变能,并计算出破碎能量与颗粒粒度的关系。本文中假设一个100微米颗粒与一个磨矿介质碰撞后其... 详细信息

众所周知,磨矿过程的能量效率随着产品粒度减小而降低。本文根据破碎力学研究了获得超细颗粒的方法。我们把破碎能(粒度化小能)定义为弹性应变能,并计算出破碎能量与颗粒粒度的关系。本文中假设一个100微米颗粒与一个磨矿介质碰撞后其动能完全转变为破碎能,试样要求的破碎冲击速度为13～225米/秒。超细磨矿必须增加磨矿介质与颗粒碰撞几率。根据上述考虑,我们用湿式磨矿获得了平均直径约0.3微米的研磨产品。

关键词：破碎力学磨矿细磨

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通过控制活塞振动降低柴油机燃烧噪声

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汽车与新动力 2016年第3期48卷 30-35页

作者： y.kanda T.Mori 王晓滕李研芳

现在,乘用车柴油机需要满足各种不同的要求,如低噪声、低燃油耗、低排放,以及高输出功率。改善噪声的关键是降低燃烧噪声,也就是降低柴油机敲缸噪声。降低柴油机敲缸的传统方法是减少由燃油预喷射引起的燃烧激振力、附加发动机机体加强... 详细信息

现在,乘用车柴油机需要满足各种不同的要求,如低噪声、低燃油耗、低排放,以及高输出功率。改善噪声的关键是降低燃烧噪声,也就是降低柴油机敲缸噪声。降低柴油机敲缸的传统方法是减少由燃油预喷射引起的燃烧激振力、附加发动机机体加强筋或利用隔声罩改善噪声传递特性。然而,这些方法都有负面影响,如燃油经济性恶化、成本/质量增加。因此,需要依靠改进发动机结构来降低噪声。通过发动机试验分析了从活塞、连杆、曲轴到发动机机体的噪声传递路径和振动特性,认定活塞共振是噪声源。为了吸收活塞垂直运动产生的共振能量,设计了带有动态阻尼器的新型活塞销结构,它能产生与活塞反向的共振。验证了采用这一新技术降低柴油机敲缸的效果。

关键词：燃烧直喷柴油机共振敲缸

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Ren-integrable and ren-symmetric integrable systems

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Communications in Theoretical Physics 2024年第3期76卷 62-69页

作者： S y Lou School of Physical Science and Technology Ningbo UniversityNingbo315211China

A new type of symmetry,ren-symmetry,describing anyon physics and corresponding topological physics,is ***-symmetry is a generalization of super-symmetry which is widely applied in super-symmetric physics such as super-symmetric quantum mechanics,super-symmetric gravity,super-symmetric string theory,super-symmetric integrable systems and so *** and Grassmann numbers are,in some sense,dual conceptions,and it turns out that these conceptions coincide for the ren situation,that is,a similar conception of ren-number(R-number)is devised for *** particular,some basic results of the R-number and ren-symmetry are exposed which allow one to derive,in principle,some new types of integrable systems including ren-integrable models and ren-symmetric integrable *** examples of ren-integrable KdV-type systems and ren-symmetric KdV equations are explicitly given.

关键词： symmetries integrable systems anyon physics extended supersymmetry ren-symmetry

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Distinct Electrical and Mechanical Responses of a Cu-10Fe Composite Prepared by Hot-Pressed Sintering and Post Treatment

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Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 255-265页

作者： X.y.yue S.y.Peng X.Zhang C.N.He y.Z.Tian Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials Tianjin UniversityTianjin300350China Research Centre for Metallic Wires Northeastern UniversityShenyang110819China

A Cu-10wt%Fe composite was prepared through hot-pressed sintering,and the material was subsequently solution *** hot-pressed sintered and solution treated materials were rolled and *** precipitation behavior and performance changes were systematically studied by using scanning electron microscopy and transmission electron *** contrast to the hot-pressed sintered specimen,the solution treatment significantly affects the thermal stability and properties of the Cu-10wt%Fe *** Cu-10wt%Fe composite was prepared after solid solution,cold rolling and aging at 773 K for 1 h,and it obtained excellent tensile strength of 494 MPa,uniform elongation of 16.3%,electrical conductivity of 51.1%IACS and softening temperature of 838 *** for the distinct difference in thermal stability and properties between hot-pressed sintered and solution treated specimens were *** findings provide a theoretical basis for designing high-performance Cu-based in-situ composites by post treatment.

关键词： Cu-Fe composite Hot-pressed sintering Thermal stability Strength Electrical conductivity

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On B(5,20)2-Groups

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Algebra Colloquium 2024年第3期31卷 429-440页

作者： E.A.Alhassan y.L.Tan y.Li School of Mathematical Sciences Jiangsu UniversityZhenjiangJiangsu 212013China Department of Mathematics Brock UniversitySt.CatharinesOntario L2S 3A1Canada

A finite group G is said to be a B(n,k)group if for any n-element subset[a_(1),…,a_(n)]of G,|{a_(i)a_(j)|1≤i,j≤n}|≤*** is of interest to characterize the structure of B(n,k)groups for n(n+1)/2≤k≤n^(2)-*** B(5,k)groups for 15≤k≤19 have been investigated by several *** this paper,we give a complete characterization of B(5,20)2-groups by showing there are five classes of such groups which are nontrivial and nonabelian.

关键词： B(n,k)groups small squaring property central extension GAP

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Construction of 2D/2D Ti_(3)C_(2)T_(x)MXene/CdS heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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Journal of Materials Science & Technology 2024年第4期171卷 1-9页

作者： T.y.Huang Z.yang S.y.yang Z.H.Dai y.J.Liu J.H.Liao G.y.Zhong Z.J.Xie y.P.Fang S.S.Zhang Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Energy Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic *** photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor ***,a novel stable Ti_(3)C_(2)T_(x)MXene/CdS heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional(2D)CdS nanosheets on 2D MXene interface via a solvothermal *** exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous *** unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic performance of the ***,the composite catalyst exhibits a significantly higher surface temperature of 80.4℃under visible light irradiation at an intensity of 0.1 W/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite catalyst with photothermal ef-fect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of CdS *** study introduces a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research.

关键词： Two-dimensional structure Heterostructure Photothermal effect Photocatalyst Hydrogen evolution

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A perspective on age-related changes in cell environment and risk of neurodegenerative diseases

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Neural Regeneration Research 2024年第4期19卷 719-720页

作者： Alice y.Liu Department of Cell Biology and Neuroscience Rutgers State University of New JerseyPiscatawayNJUSA

“Age-related neurodegenerative disease”underscores human age as the primary risk factor for disease development:Alzheimer’s,Parkinson’s,and Huntington’s disease(HD)as *** for the age-dependent delay in disease manifestation,in particular for autosomal dominant forms of the disease,and the underlying cause(s)of specific neuron dysfunction and death to manifest as memory loss,anxiety,depression,and agitation in disease subjects remain *** are interested in understanding age-related changes in cell environment that can modulate the structure,function,aggregation.

关键词： Huntington Alzheimer death

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