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A Polarization-Adjustable Picosecond deep-Ultraviolet Laser for Spin- and Angle-resolved Photoemission Spectroscopy

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Chinese Physics Letters 2012年第6期29卷 149-151页

作者： ZHANG Feng-Feng YANG Feng ZHANG Shen-Jin WANG Zhi-Min XU Feng-Liang PENG Qin-Jun ZHANG Jing-Yuan WANG Xiao-Yang CHEN Chuang-Tian XU Zu-Yan rCLPT Key Lab of Functional Crystal and Laser TechnologyTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190 Beijing Center for Crystal r&d Key Lab of Functional Crystal and Laser TechnologyTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190 Graduate University of Chinese Academy of Sciences Beijing 100190

We report on a polarization-adjustable picosecond deep-ultraviolet (dUV) laser at 177.3 *** dUV laser was produced by second harmonic generation from a mode-locked laser at 355 nm in nonlinear optical crystal *** laser delivered a maximum average output power of 1.1 m W at 177.3 *** polarization of the 177.3nm beam was adjusted with linear and circular polarization by means of λ/4 and λ/2 wave *** the best of our knowledge,the laser has been employed as the circularly polarized and linearly polarized dUV light source for a spin- and angle-resolved photoemission spectroscopy with high resolution for the first time.

关键词： polarization polarized circular

development of the reactive force field and silicon dry/wet oxidation process modeling

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npj Computational Materials 2023年第1期9卷 676-686页

作者： unichi Noaki Satoshi Numazawa Joohyun Jeon Shuntaro Kochi PTCAd-4 Part Process TCAD LabSamsung Device Solutions R&D JapanSamsung Japan Corporation2-7Sugasawa-choTsurumi-kuYokohama 230-0027Japan Computational Science&Engineering Team SAMSUNG ELECTRONICSHwaseong-siGyeonggi-do 18448Korea

We developed the Si/O/H reactive force field parameter set and applied to silicon dry/wet oxidation process to understand the underlying physics of the thermal oxidation of the Si(100)*** a systematic development of the Si/O parameter using the experimental data of the volumes of the SiO_(2) crystal as a reference,we reproduced the same result over the temperature range of 300–1300 *** strategic tunings of parameters related to Si/O/H system,we carried out the simulation comparing the wet-and dry processes.A significant acceleration of the oxide film growth seen in the‘in-situ-steam-generation(ISSG)’is successfully *** properties of our model imply its applicability in wider *** compare our results with those obtained by using parameter set recently developed by other *** the configuration of atoms near the interface of the SiO_(2) film,our model is found to be able to study the role of hydrogen atoms for the ISSG acceleration.

关键词： process acceleration film

Catalytic Peculiarity of Electrode/Polyelectrolyte Interfaces toward COreduction

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Wuhan University Journal of Natural Sciences 2024年

作者： MI Zhensheng WANG Gongwei ZHUANG Lin College of Chemistry and Molecular Sciences Hubei Key Lab of Electrochemical Power Sources Wuhan University

A prominent feature of modern electrochemical technologies, such as fuel cells, water electrolysis, and CO2 electrolysis, is to employ polyelectrolytes instead of liquid electrolytes. This shift not only mitigates risks like corrosion and leaks associated with liquid electrolytes, but also facilitates the construction of zero-gap membrane electrode assembly(MEA) devices. In the MEA setups, the anode and cathode are tightly pressed against a micron-thick polyelectrolyte membrane, which can significantly reduce internal resistance and enhance energy conversion efficiency.

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Scenario-based verification in presence of variability using a synchronous approach

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Frontiers of Computer Science 2013年第5期7卷 650-672页

作者： Jean-Vivien MILLO Frederic MALLET Anthony COAdOU S rAMESH INrIA Sophia-Antipolis Aoste team (INRIA/I3S/CNRS/UNS) Sophia-Antipolis 06560 France University of Nice Sophia Antipolis Sophia-Antipolis 06900 France Global General Motors r&d India Science Lab GM Technical Center India Bangalore 560066 India

This paper presents a new model of scenarios, dedicated to the specification and verification of system be- haviours in the context of software product lines （SPL）. We draw our inspiration from some techniques that are mostly used in the hardware community, and we show how they could be applied to the verification of software components. We point out the benefits of synchronous languages and mod- els to bridge the gap between both worlds.

关键词： Esterel UML MArTE scenario verification,feature interaction variability

rational modulation of electronic structure in PtAuCuNi alloys boosts efficient electrocatalytic ethanol oxidation assisted with energy-saving hydrogen evolution

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Journal of Energy Chemistry 2024年第6期93卷 557-567,I0014页

作者： Hu Yao Yinan Zheng Xin Yu Songjie Hu Baolian Su Xiaohui Guo Key lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education The College of Chemistry and Materials ScienceNorthwest UniversityXi’an 710069ShaanxiChina department of Inorganic Chemistry University of NamurBruxellesB-5000 NamurBelgium

Compared to conventional electrocatalytic water splitting,electrocatalytic ethanol oxidation reaction(EOr)along with hydrogen production is considered a more energy-efficient ***,we prepared a type of novel quaternary alloy catalyst(PtAuCuNi@NF)that exhibits excellent activity for EOr(0.215 V at 10 mA cm^(-2))and hydrogen evolution reaction(HEr)(7 mV at 10 mA cm^(-2)).Experimental results demonstrated that both Cu and Ni modulated the electronic environment around Pt and *** electron-rich active center facilitates the rapid adsorption and dissociation of reactants and intermediates for both EOr and ***,in the ethanol-assisted overall water splitting(E-OWS),a current density of 10 mA cm^(-2)was achieved at 0.28 ***,an advanced acid-base self-powered system(A-Bsps)that can achieve a self-powered voltage of 0.59 V was ***,the self-driven hydrogen production with zero external power supply was realized by integrating A-Bsps with the E-OWS *** interesting results can provide a feasible strategy for designing and developing advanced nanoalloy-based materials for clean energy integration and use in various fields.

关键词： Pt-based alloy Electronic structure Ethanol oxidation Self-powered system Overall water splitting

Quantum Tunneling Enhanced Hydrogen desorption from Graphene Surface: Atomic versus Molecular Mechanism

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Chinese Physics Letters 2024年第8期41卷 58-68页

作者： Yangwu Tong Yong Yang Science Island Branch of Graduate School University of Science and Technology of ChinaHefei 230026China Key lab of Photovoltaic and Energy Conservation Materials Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China

We study the desorption mechanism of hydrogen isotopes from graphene surface using first-principles calculations,with focus on the effects of quantum *** low temperatures,quantum tunneling plays a dominant role in the desorption process of both hydrogen monomers and *** the case of dimer desorption,two types of mechanisms,namely the traditional one-step desorption in the form of molecules(molecular mechanism),and the two-step desorption in the form of individual atoms(atomic mechanism),are studied and *** the ortho-dimers,the dominant desorption mechanism is found to switch from the molecular mechanism to the atomic mechanism above a critical temperature,which is∼300K and 200K for H and d,respectively.

关键词： desorption quantum mechanism

recyclable High-performance Carbon Fiber reinforced Epoxy Composites Based on dithioacetal Covalent Adaptive Network

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Chinese Journal of Polymer Science 2024年第10期 1514-1524页

作者： Gui-Lian Shi Ting-Cheng Li dao-Hong Zhang Jun-Heng Zhang Key laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key laboratory of Catalysis and Materials Science Hubei R & D Center of Hyperbranched Polymers Synthesis and Applications South-Central Minzu University State Key laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Ministry-of-Education Key laboratory for the Green Preparation and Application of Functional Materials Hubei University

recycling of carbon fiber reinforced composites is important for sustainable development and the circular economy. despite the use of dynamic chemistry, developing high-strength recyclable CFrPs remains a major challenge due to the mutual exclusivity between the dynamic and mechanical properties of materials. Here, we developed a high-strength recyclable epoxy resin (HrEP) based on dynamic dithioacetal covalent adaptive network using diglycidyl ether bisphenol A (dGEBA), pentaerythritol tetra(3-mercapto-propionate)(PETMP), and vanillin epoxy resin (VEPr). At high temperatures, the exchange reaction of thermally activated dithioacetals accelerated the rearrangement of the network, giving it significant reprocessing ability. Moreover, HrEP exhibited excellent solvent resistance due to the increased cross-linking density. Using this high-strength recyclable epoxy resin as the matrix and carbon fiber modified with hyperbranched ionic liquids (HBP-AMIM+PF6-) as the reinforcing agent, high performance CFrPs were successfully prepared. The tensile strength, interfacial shear strength (IFSS) and interlaminar shear strength (ILSS) of the optimized formulation (HrEP20/CF-HBPPF6) were 1016.1, 70.8 and 76.0 MPa, respectively. In addition, the CFrPs demonstrated excellent solvent and acid/alkali-resistance. The CFrPs could completely degrade within 24 h in dMSO at 140°C, and the recycled CF still maintained the same tensile strength and ILSS as the original after multiple degradation cycles.

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Protective Effects of danmu Extract Syrup on Acute Lung Injury Induced by Lipopolysaccharide in Mice through Endothelial Barrier repair

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Chinese Journal of Integrative Medicine 2024年第3期30卷 243-250页

作者： XU Han XU Si-cong LI Li-yan WU Yu-huang TAN Yin-feng CHEN Long LIU Pei LIANG Chang-fu HE Xiao-ning LI Yong-hui Hainan Provincial Key lab of research&development on Tropic Herbs Hainan Medical UniversityHaikou571199China department of Stomatology the Second Affiliated Hospital of Hainan Medical UniversityHaikou571199China

Objective:To investigate the effects of danmu Extract Syrup(dMS) on lipopolysaccharide(LPS)-induced acute lung injury(ALI) in mice and explore the ***:Seventy-two male Balb/C mice were randomly divided into 6 groups according to a random number table(n=12),including control(normal saline),LPS(5 mg/kg),LPS+dMS 2.5 mL/kg,LPS+dMS 5 mL/kg,LPS+dMS 10 mL/kg,and LPS+dexamethasone(dXM,5 mg/kg) *** pretreatment with dMS and dXM,the ALI mice model was induced by LPS,and the bronchoalveolar lavage fluid(BALF) were collected to determine protein concentration,cell counts and inflammatory *** lung tissues of mice were stained with hematoxylin-eosin,and the wet/dry weight ratio(W/d) of lung tissue was *** levels of tumor necrosis factor-α(TNF-α),interleukin(IL)-6 and IL-1βin BALF of mice were detected by enzyme linked immunosorbent *** expression levels of Claudin-5,vascular endothelial(VE)-cadherin,vascular endothelial growth factor(VEGF),phospho-protein kinase B(p-Akt) and Akt were detected by Western blot ***:dMS pre-treatment significantly ameliorated lung histopathological *** with the LPS group,the W/d ratio and protein contents in BALF were obviously reduced after dMS pretreatment(Pr Pr of cells in BALF and myeloperoxidase(MPO) activity decreased significantly after dMS pretreatment(Pr PdMS pre-treatment decreased the levels of TNF-α,IL-6 and IL-1β(PdMS activated the phosphoinositide 3-kinase/protein kinase B(PI3K/Akt) pathway and reversed the expressions of Claudin-5,VE-cadherin and VEGF(PdMS attenuated LPS-induced ALI in mice through repairing endothelial *** might be a potential therapeutic drug for LPS-induced lung injury.

关键词： danmu Extract Syrup acute lung injury inflammatory factors vascular endothelial growth factor phosphoinositide 3-kinase/protein kinase B Chinese medicine Nauclea officinalis

MEASUrEMENTS ANd APPLICATIONS OF QoE FOr MULTIMEdIA COMMUNICATIONS

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China Communications 2018年第10期15卷 I0002-I0004页

作者： Xiaoming Tao Jiajia Liu Shiwen Mao Merouane debbah Chunxiao Jiang the department of electronic engineering tsinghua university the school of cyber engineering xidian university the wireless engineering research and education center (werec) at auburn university the huawei france r&d center the mathematical and algorithmic sciences lab the huawei france r&d center tsinghua space center tsinghua university

With the rapid development of smart devices and mobile networks,multimedia services will dominate most of data traffic in 4G/5G *** -such as conversational videos,online multimedia sharing,remote education,*** gained ... 详细信息

关键词：多媒体通讯应用活动网络多媒体服务录像