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The Vacuum Chamber for the SSRF Storage Ring

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The Vacuum Chamber for the SSRF Storage Ring

The Quantum Dots Characteristics of Hydrogenated Nanocrystaline Silicon Films

The Second Asian Particle Accelerator Conference

作者： l.x.Yin D.K.jiang H.W.Du x.l.jiang Shanghai National Synchrotron Radiation Shanghai National Synchrotron Radiation Shanghai National Synchrotron Radiation Shanghai National Synchrotron Radiation

＜正＞ The 396m circumference storage ring vacuum system for Shanghai Synchrotron RediationFacility（SSRF）is composed of 80 individual *** antechamber type vacuum systemis adopted because of its many *** chamber will be machined from two thickplates of A5083-H321 aluminum alloy and welded at the *** design,manufactureand test of a 6m-long vacuum chamber prototype have been successfully finished in the R ＆

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电子显微学报 1997年第4期 37-38页

作者： M.liu\ H.F.Dou\ Y.l.He\ x.l.jiang (The Amorphous Physics Research lab., Beijing University of Aeronautics and Astronauts, Beijing 100083, China)

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关键词： Hydrogenated Nanocrystaline Characteristics Dots

Vacuum System Design for the SSRF 3.5GeV Storage Ring

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Vacuum System Design for the SSRF 3.5GeV Storage Ring

The Quantum Dots Characteristics of Hydrogenated Nanocrystalline Silicon Films

The Second Asian Particle Accelerator Conference

作者： D.K.jiang l.x.Yin Z.S.Wang H.W.Du B.H.Shen x.l.jiang l.P.Chen C.Yu Shanghai National Synchrotron Radiation Center

The Shanghai Synchrotron Radiation Facility(SSRF)to be built in Shanghai is a new thirdgeneration light *** vacuum system for the SSRF storage ring should maintain abeam-on operation pressure of 1×10Pa or less to achieve an electron beam lifetime of *** vacuum system is designed to permit all synchrotron photons on the median planeto escape through the electron channel and go into an *** unused synchrotron

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The Quantum Dots Characteristics of Hydrogenated Nanocrystal...

THERMAl-CONDUCTIVITY MEASUREMENTS FOR FIllING MATERIAlS FOR SlIDING GATES AND THEIR EFFECTS ON FREE- TAPPING PERFORMANCE OF STEEl lADlE

1996年中国青年学者物理学讨论会

作者： M.liu H.F.Dou Y.l. He x.l.jiang(The Amorphous Physics Research lab.,Beijing University of Aeronautics and Astronauts,Beijing 100083,China)

The hydrogenated nanocrystalline silicon films(nc-Si:H)are fabricated by PECVD and the room temperature conductivity of ne-Si:H is in the range of 10-10(Ω·cm).The crystalline grains(3- 5nm in size)in nc-Si:H films have been demonstrated structurally and electrically to be served as quantum dots(QD).The resonant tunneling diode is fabricated with thin nc-Si:H film and the staircases appears clearly on its Ⅰ-Ⅴ curves under 77K.

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Acta Metallurgica Sinica(English letters) 1999年第5期12卷 1125-1129页

作者： Z.H.jiang 1) ,Y.He 2) ,x.l.jiang 1) , G.J.Han 1) and S.S.Rui 1) 1) Department of Iron & Steel Metallurgy, School of Material and Metallurgical Science, Northeastern University, Shenyang 110006, China 2) Institute of Metal Research,T

The thermal conductivities of different typical species filling materials for sliding gate systems for steel ladles were measured using a hot wire technique, and the relationships between thermal conductivity and temperature were regressed. The factors affecting thermal conductivity were analyzed by using variance analysis for a perpendicular experiment. The effects of thermal conductivity on sliding gate free tapping were studied, and it was revealed that decreasing the thermal conductivity of the filling materials is beneficial in enhancing the rate of free tapping for sliding gates.

关键词： filling materials thermal conductivity sliding gate free tapping

large non-pedunculated colorectal polyp management: The elephant in the room

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World Journal of Gastroenterology 2024年第25期30卷 3126-3131页

作者： Shirley x jiang Neal Shahidi Department of Medicine University of British ColumbiaVancouver V6Z 2K5BCCanada

Minimally invasive innovations have transformed *** to colorectal cancer(CRC),there has been a shift towards less invasive surgical techniques and use of endoscopic resection as an alternative for low risk T1 *** role of endoscopic resection is however much more extensive:It is now considered the first line management strategy for most large(≥20 mm)non-pedunculated colorectal polyps,the majority of which are *** is due to the well-established efficacy,safety,and cost-effectiveness of endoscopic techniques compared to *** endoscopic modalities now exist with distinct risk-benefit profiles and their outcomes are further improved by site-specific technical modifications,auxiliary techniques,and adverse event miti-gation *** capacity continues to evolve with emerging endoscopic techniques and expanding applications,particularly in the confines of a multi-disciplinary setting.

关键词： Cancer Colonoscopy Endoscopy Polyp Endoscopic mucosal resection Endoscopic submucosal dissection

Dissipationless layertronics in axion insulator MnBi2Te4

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National Science Review 2024年第6期11卷 189-196页

作者： Shuai li Ming Gong Shuguang Cheng Hua jiang x.C.xie School of Physical Science and Technology Soochow University Institute for Advanced Study Soochow University International Center for Quantum Materials School of Physics Peking University Department of Physics Northwest University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University Hefei National laboratory

Surface electrons in axion insulators are endowed with a topological layer degree of freedom followed by exotic transport phenomena, e.g., the layer Hall effect. Here, we propose that such a layer degree of freedom can be manipulated in a dissipationless way based on the antiferromagnetic MnBi2Te4with tailored domain structure. This makes MnBi2Te4a versatile platform to exploit the ‘layertronics’ to encode, process and store information. Importantly, the layer filter, layer valve and layer reverser devices can be achieved using the layer-locked chiral domain wall modes. The dissipationless nature of the domain wall modes makes the performance of the layertronic devices superior to those in spintronics and valleytronics. Specifically, the layer reverser, a layer version of the Datta–Das transistor, also fills up the blank in designing the valley reverser in valleytronics. Our work sheds light on constructing new generation electronic devices with high performance and low-energy consumption in the framework of layertronics.

关键词： axion insulator MnBi2Te4 layertronics antiferromagnetic domain wall dissipationless transport

Dual Additives for Stabilizing li Deposition and SEI Formation in Anode-Free li-Metal Batteries

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Energy & Environmental Materials 2024年第3期7卷 84-92页

作者： Baolin Wu Chunguang Chen Dmitri l.Danilov Zhiqiang Chen Ming jiang Rüdiger-A.Eichel Peter H.l.Notten Forschungszentrum Jülich(IEK-9) D-52425Jülich Germany RWTH Aachen University D-52074Aachen Germany lNM Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China Eindhoven University of Technology P.O.Box 5135600 MBEindhoven The Netherlands School of Electronics and Information Institute of Carbon Neutrality and New EnergyHangzhou Dianzi UniversityHangzhou 310018China University of Technology Sydney BroadwaySydney NSW 2007Australia

Anode-free li-metal batteries are of significant interest to energy storage industries due to their intrinsically high ***,the accumulative li dendrites and dead li continuously consume active li during *** results in a short lifetime and low Coulombic efficiency of anode-free li-metal *** effective electrolyte additives can improve the li deposition homogeneity and solid electrolyte interphase(SEI)stability for anode-free li-metal ***,we reveal that introducing dual additives,composed of liAsF6 and fluoroethylene carbonate,into a low-cost commercial carbonate electrolyte will boost the cycle life and average Coulombic efficiency of NMC‖Cu anode-free li-metal *** NMC‖Cu anode-free li-metal batteries with the dual additives exhibit a capacity retention of about 75%after 50 cycles,much higher than those with bare electrolytes(35%).The average Coulombic efficiency of the NMC‖Cu anode-free li-metal batteries with additives can maintain 98.3%over 100 *** contrast,the average Coulombic efficiency without additives rapidly decline to 97%after only 50 *** situ Raman measurements reveal that the prepared dual additives facilitate denser and smoother li morphology during li *** dual additives significantly suppress the li dendrite growth,enabling stable SEI formation on anode and cathode *** results provide a broad view of developing low-cost and high-effective functional electrolytes for high-energy and long-life anode-free li-metal batteries.

关键词： anode-free lithium metal battery dual additives in situ Raman li growth SEI formation

Water-soluble brown carbon in atmospheric aerosols from the resource-dependent cities:Optical properties,chemical compositions and sources

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Journal of Environmental Sciences 2024年第4期138卷 74-87页

作者： Haoji Wang Yue Su Yangzheng liu Fei xie xingjun Zhou Ruihong Yu Changwei lü jiang He School of Ecology and Environment Inner Mongolia UniversityHohhot 010021China Institute of Environmental Geology Inner Mongolia UniversityHohhot 010021China Environmental Monitoring Center of Inner Mongolia Hohhot 010011China

As a vital type of light-absorbing aerosol,brown carbon(BrC)presents inherent associations with atmospheric photochemistry and climate ***,the understanding of the chemical and optical properties of BrC is limited,especially in some resource-dependent cities with long heating periods in northwest *** study showed that the annual average abundances of Water-soluble BrC(WS-BrC)were 9.33±7.42 and 8.69±6.29μg/m^(3)in Baotou and Wuhai and the concentrations,absorption coefficient(Abs_(365)),and mass absorption efficiency(MAE365)of WS-BrC presented significant seasonal patterns,with high values in the heating season and low values in the non-heating season;while showing opposite seasonal trends for the Absorption Angstr?m exponent(AAE_(300-400)).Comparatively,the levels of WS-BrC in developing regions(such as cities in Asia)were higher than those in developed regions(such as cities in Europe and Australia),indicating the significant differences in energy consumption in these *** combining fluorescence excitation-emission matrix(EEM)spectra with the parallel factor(PARAFAC)model,humic-like(C1 and C2)and proteinlike(C3)substances were identified,and accounted for 61.40%±4.66%and 38.6%±3.78%at Baotou,and 60.33%±6.29%and 39.67%±4.17%at Wuhai,*** results of source apportionment suggested that the potential source regions of WS-BrC varied in heating ***-heating seasons and that the properties of WS-BrC significantly depended on primary emissions(e.g.,combustion emissions)and secondary formation.

关键词： Water-soluble brown carbon Atmospheric aerosols Optical properties PARAFAC Source apportionment