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Dejun Yu： a patriotic botanist and his contributions

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Protein & Cell 2017年第11期8卷 785-787页

作者： hong jiang Center for Culture Science and Technology Sichuan University Chengdu 610065 China

Dejun Yu （Te-tsun Yu, Feb. 1, 1908-July 14, 1986） was a famous plant taxonomist and horticulturist in China as well as an expert on botanical gardens （Fig. 1）. As a patriotic scientist, Dejun Yu refused a position in Britain and returned to China without hesitation in 1950. He devoted his whole life to the botanical sciences. His contributions went far beyond advancing botany, however, extending to construction of botanical gardens and the exploration of plant resources, especially fruit trees in China. His research was closely connected to the scientific and economic development of his country.

关键词： Dejun Yu a patriotic botanist his contributions

NEW TYPE OF LIMITED-SLIP DIFFERENTIAL WITH THREE-PITCH FLUCTUATING SPEED RATIO

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Chinese Journal of Mechanical Engineering 2008年第1期21卷 1-4页

作者： jiang hong WANG Xiaochun School of Mechanical ＆ Electronically Engineering Beijing Jiaotong University Beijing 100044 China

A type of three-pitch fluctuating speed ratio limited-slip differential （TPLSD） is presented for the first time, analyzed its working principle, introduced the tooth profile design method of using non-involute tooth profile and separated tooth profile design along the pitch line. Performance comparison between vehicles equipped with three-pitch fluctuating speed ratio limited-slip differential and common open differefitial is finished. The data from experiments prove that three-pitch fluctuating speed ratio limited-slip differential can increase the traction of a vehicle, improve its acceleration performance, decrease braking distance and limit sideslip. The basic structure of new differential is the same of open differential, the only difference is that they have different tooth profile, so the new differential has a high performance price.

关键词： Differential Limited-slip differential Braking distance Maximum traction Acceleration performance

Renewal strategies for old industrial areas in the post-industrial age——Take "Zurich-West" in Switzerland as an example

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Science China(Technological Sciences) 2009年第9期52卷 2510-2516页

作者： jiang hong ZHANG SiWei School of Architecture Southeast UniversityNanjing 210096China

This paper introduces and analyses the renewal planning of "Zurich-West" ,an old industrial area. It points out that systematic and comprehensive target orientation,extensive collaboration in argumentation and decision-making,and the design ideas of coexistence and integration are the key to its success. Considering the status quo of China's old industrial district remodeling,the paper offers some suggestions.

关键词： Zurich-West industrial area urban renewal collaborative planning sustainable development

Solidification of Immiscible Alloys Under the Effect of Electric and Magnetic Fields

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Acta Metallurgica Sinica(English Letters) 2018年第12期31卷 1240-1248页

作者： hong-Xiang jiang Jiu-Zhou Zhao Institute of Metal Research Chinese Academy of Sciences

Immiscible alloys have aroused considerable interests in the last decades on account of their special physical andmechanical properties and potential applications. A considerable number of researches have been implemented toinvestigate the solidification behaviors of immiscible alloys in electric and magnetic fields. It has been indicated that themagnetic field and electric current can remarkably affect the solidification process and microstructures of immisciblealloys. The solidification techniques under the effects of electric and magnetic fields have great potentials for the fabri-cation of immiscible alloys. This paper reviews the research work in this field in recent years.

关键词： Immiscible alloys Solidification Microstructure evolution Electric current Magnetic field Electric-magnetic fields

Energy dissipation mechanism and experiment of particle dampers for gear transmission under centrifugal loads

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Particuology 2016年第4期14卷 40-50页

作者： Wangqiang Xiao Yuxiang Huang hong jiang hong Lin Jiani Li Department of Mechanical and Electrical Engineering Xiamen University Xiamen 361005 China Beijing Institute of Electronic System Engineering Beijing 100854 China Beijing Institute of Astronautical Systems Engineering Beijing 100076 China

As a passive means of vibration reduction, particle damping is mainly applied to the horizontal or vertical steady field. However, it is seldom applied to centrifugal fields. Under high speed and heavy loading, the vibration of tooth surfaces of gear transmissions becomes more severe shortening gear service life and augmenting noise. Under centrifugal loading, the particle system exhibits different characteristics, for example, particles are extruded at the end farthest from the center. We investigated gears with drilled via holes filled with damping particles. Using the discrete-element method, we developed an energy dissipation model for the particle system accounting for friction and inelastic collisions. Energy dissipation and damping characteristics of this system were analyzed. Experiments were also conducted with the gear system having different particle filling rates. The results show that this filling rate is an important parameter associated with particle damping in a centrifugal field. An unsuitable filling rate would significantly reduce damping effectiveness. With changes in rotation speed and load, the gear transmission system has different optimal filling rates. The results provide guidelines for the application of particle damping in centrifugal fields of gear transmissions.

关键词： Centrifugal field Gear transmission Particle damping Discrete element method Vibration reduction

Early-age strength property improvement and stability analysis of unclassified tailing paste backfill materials

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International Journal of Minerals,Metallurgy and Materials 2020年第9期27卷 1191-1202页

作者： Qian Zhou Juan-hong Liu Ai-xiang Wu hong-jiang Wang School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Urban Underground Space Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory of High-Efficient Mining and Safety of Metal Ministry of EducationUniversity of Science and Technology BeijingBeijing 100083China

High-density tailings,small cementitious materials,and additives are used for backfill materials with poor early compressive strength(ECS),which may greatly affect the mining and backfill cycle,to prepare paste backfill materials(PBMs)with a high *** effects and mechanisms of different early strength agents on the property of PBM are *** action mechanism of additives on the properties of PBM is also analyzed through X-ray diffraction,scanning electron microscope,and energy dispersive *** show that the effects of single-component additives 1,3,and 6 are better than those of the other additives,and their optimal dosages are 3wt%,1wt%,and 3wt%,*** optimum multicomponent combinations are 1wt%of additive 1 and 1.5wt%of additive *** ECS of the paste with additive 10 increases to a greater extent than that of the other pastes because of the synergistic action of additive 1 with additive *** hydration product of Ca(OH)2 is consumed,and more C-S-H gels are generated with the addition of additives to *** particles,ettringite crystals,and gels intertwined with one another form a dense net-like structure that fills the *** structure can significantly improve the ECS of PBM.

关键词： paste backfill unclassified tailings binder powder early-age strength microstructure

A review on conversion of crayfish-shell derivatives to functional materials and their environmental applications

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Journal of Bioresources and Bioproducts 2020年第4期5卷 238-247页

作者： Shuo Chen Shunfeng jiang hong jiang CAS Key Laboratory of Urban Pollutant Conversion Department of Applied ChemistryUniversity of Science and Technology of ChinaHefei 230026China

As a new research focus in the field of biological resources,crayfish shells have great potential for development and *** this review,the typical methods and research progress of separating the primary components such as chitosan,protein,and astaxanthin from crayfish shells and converting crayfish shells into functional carbon-based materials are introduced in ***,the application of crayfish shell and typically modified crayfish-shell biochar in adsorption,antibacterial,electrochemical,*** ***,the future research outlook is *** review can provide some perspectives on the development of the application of crayfish shells and crayfish-shell derivatives.

关键词： Biological resources Crayfish shells Separation Conversion Application

Model of Diffusion of Sulfur in Soda-lime-silicate Glass:An Experimental and Comparative Study

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Journal of Wuhan University of Technology(Materials Science) 2017年第1期32卷 76-79页

作者：孟政 hong Wang WANG Yongbin jiang hong State Key Laboratory of Green Building Materials China Building Materials AcademyBeijing 100024China Institute of GlassResearch China Building Materials AcademyBeijing 100024China Materials and Chemical Engineering Hainan UniversityHaikou 570228China

The diffusion property of sulfur on the soda-lime-silicate float glass surface was studied by using secondary ion mass spectroscopy（SIMS）.According to the Fick＇s Second Law,two models of diffusion of sulfur on the glass surface were *** the diffusion of sulfate（S^6＋） is considered uniquely,the concentration-depth profile of sulfur can not be fitted very well,especially on the top surfaces of the air side and tin side of float *** the diffusion of sulfide（S^2-） on the profile of sulfur can not be *** concentration-depth profile of sulfur on both sides of glass can be fitted more exactly when both S^6＋ and S^2- are *** on the above-mentioned fitting results,it is concluded that the diffusion coefficents of S^6＋ and S^2- of tin side are larger than those of the air ***,the diffusion coefficents are related to the contacted medium.

关键词： diffusion sulfur soda-lime-silicate glass secondary ion mass spectroscopy

Hypothalamic GABAergic neurocircuitry in the regulation of energy homeostasis and sleep/wake control

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Medical Review 2022年第5期2卷 531-540页

作者： hong jiang Department of Neurobiology School of Basic Medical SciencesNeuroscience Research InstitutePeking UniversityNo.38Xueyuan RoadHaidian DistrictBeijing 100083China Key Laboratory for Neuroscience Ministry of Education/National Health Commission of ChinaPeking UniversityBeijing 100083China

Gamma-aminobutyric acid(GABAergic)neuron,as one of important cell types in synaptic transmission,has been widely involved in central nervous system(CNS)regulation of organismal physiologies including cognition,emotion,arousal and ***,upon their distribution in various brain regions,effects of GABAergic neurons in the brain are very *** current report,we will present an overview of the role of GABAergic mediated inhibitory neurocircuitry in the hypothalamus,underlying mechanism of feeding and sleep homeostasis as well as the characteristics of latest transcriptome profile in order to call attention to the GABAergic system as potentially a promising pharmaceutical intervention or a deep brain stimulation target in eating and sleep disorders.

关键词： energy homeostasis feeding gamma-aminobutyric acid hypothalamus neurocircuitry sleep wakefulness.