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Insights into the nucleation,grain growth and phase transformation behaviours of sputtered metastableβ-W films

Journal of Materials Science & Technology 2021年第31期90卷 66-75页

作者： Shuqun Chen Jinshu Wang Ronghai Wu Zheng Wang yangzhong li Yiwen Lu Wenyuan Zhou Peng Hua Hongyi lia Key Laboratory of Advanced Functional Materials Education Ministry of ChinaFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710129China High Performance Computing Department National Supercomputing Center in ShenzhenShenzhen 518055China China Ship Development and Design Center Wuhan 430074China

Metastable phase in tungsten film is of great interests in recent years due to its giant spin Hall effects,however,little information has been known on its nucleation,growth and phase *** this paper,a 900 nm-thick tungsten film with double-layer structure(α-W underlayer andβ-W above it)was produced on SiO_(2)/Si substrate by high vacuum magnetron sputtering at room *** structural properties ofβ-W were systemically investigated by X-ray diffraction,transmission electron microscopy,thermodynamic calculation,first-principle and phase-field *** is found that theβ-W nucleation is energetically favoured on the SiO_(2)surface compared to theα-W *** the film thickening proceeds,β-W[211]turns to be preferred direction of growth owing to the elastic strain energy minimization,which is verified by phase-field ***,theβ→αphase transformation takes place near the film-substrate interface while the rest of the film keeps theβ-W phase,leading to a doublelayer *** localized phase transition is induced by lower Gibbs free energy ofα-W phase at larger grain sizes,which can be confirmed by thermodynamic *** in-situ heating TEM analysis of the as-deposited film reveals that theβ→αphase transformation is fulfilled byα/βinterface propagation rather than local atomic *** findings offer valuable insights into the intrinsic properties of metastable phase in tungsten.

关键词： Metastable phases Tungsten Nucleation and growth Phase field modelling Phase transformation

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ASBase:The universal database for aggregate science

聚集体(英文)

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聚集体(英文) 2023年第1期4卷 148-157页

作者： Junyi Gong Wanjun Gong BoWu Haoran Wang Wei He Zhongyang Dai yangzhong li Yong liu Zhiming Wang Xiaojun Tuo Jacky W.Y.Lam Zijie Qiu Zheng Zhao Ben Zhong Tang Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdongChina AIE-Institute State Key Laboratory of Luminescence Materials and DevicesCenter of Aggregation-induced EmissionKey Laboratory of Luminescence from Molecular Aggregates of Guangdong ProvinceSouth China University of Technology(SCUT)GuangzhouChina High Performance Computing Department National Supercomputing Center in ShenzhenShenzhenChina Department of Chemistry Hong Kong University of Science and TechnologyKowloonHong KongChina

This paper reports the first universal and versatile database on aggregate materials for the field of aggregate science *** the current stage,the database(http://119.***.135.188:8080/)contains over 1000 entries of organic aggregate material systems(mainly luminescent systems at the current stage)with a unique data structure which is designed particularly for aggregate materials and containing the photophysics and physicochemical properties of the compounds in different statuses of aggregation,including dilute solution form,pristine solid-state,stable crystalline,and nanoaggregates formed in *** web-based interface of the database provided functions to index,search,manipulate,fetch and deposit data *** addition,a background calculation service optimizes the chemical structure of new entries on different levels of *** database also provided background API for interactive developments of prediction or regression models based on machine-learning algorithms.

关键词： aggregate science aggregation-induced emission data-driven model database

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量子计算模拟及优化方法综述

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计算机工程 2022年第1期48卷 1-11页

作者：喻志超李扬中刘磊冯圣中国家超级计算深圳中心(深圳云计算中心) 广东深圳518055 中国科学院计算技术研究所计算机体系结构国家重点实验室北京100190

在处理某些大规模并行问题时,量子计算因量子位独特的叠加态和纠缠态特性,相比经典计算机在并行处理方面具有更明显的优势。现阶段,物理量子比特计算机受限于可扩展性、相干时间和量子门操作精度,在经典计算机上开展量子计算模拟成为研... 详细信息

在处理某些大规模并行问题时,量子计算因量子位独特的叠加态和纠缠态特性,相比经典计算机在并行处理方面具有更明显的优势。现阶段,物理量子比特计算机受限于可扩展性、相干时间和量子门操作精度,在经典计算机上开展量子计算模拟成为研究量子优越性和量子算法的有效途径。然而,随着量子比特数的增加,模拟所需的计算机资源呈指数增长。因此,研究大规模量子计算模拟在保证计算准确度、精度及效率的情况下减少模拟所需资源具有重要意义。从量子比特、量子门、量子线路、量子操作系统等方面展开,阐述量子计算的基本原理和背景知识。同时总结基于经典计算机的量子计算模拟基本方法,分析不同方法的设计思路和优缺点,列举目前常见的量子计算模拟器。在此基础上,针对量子计算模拟的通信开销问题,从节点拆分和通信优化2个方面出发,讨论基于超级计算机集群的量子计算模拟优化方法。

关键词：量子计算量子线路概率幅模拟量子计算模拟器超级计算机

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Spectral Properties of Erbium—Doped Oxyfluoride Silicate Glasses for Broadband Optical Amplifiers

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Chinese Physics Letters 2003年第6期20卷 905-908页

作者： XUShi-Qing yangzhong-Min DAIShi-Xun YANGJian-Hu WenLei HUli-li JIANGZhong-Hong ShanghaiInstituteofOpticsandFineMechanics ChineseAcademyofSciencesShanghai201800

The new oxyfluoride silicate glasses of Er3+-doped 50SiO2-(50-x)PbO-xPbF2 were prepared. With increasing PbF2 content in the glass composition, the fluorescence full width at half maximum and lifetimes of the 4I13/2 level of Er3+ increase, while the refractive indices and densities decrease. Er3+-doped 50SiO2-50PbF2 glass showed broad fluorescence spectra of 1.55mum with a large stimulated emission cross-section and long lifetimes of 4I13/2 level of Er3+. Compared with other glass hosts, the gain bandwidth properties of Er3+-doped 50SiO2-50PbF2 glass are close to those of tellurite and bismuth glasses, and have advantages over those of silicate, phosphate and germante glasses. The broad and flat 4I13/2→4I15/2 emission of Er3+ around 1.55µm can be used as host material for potential broadband optical amplifier in wavelength-division-multiplexing network system.

关键词： Glass

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扬子板块西南缘古元古代双峰式岩浆事件:Columbia超大陆裂解的序幕?

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地质论评 2024年第S1期70卷 15-16页

作者：张宏辉张耀堂郑洪福李金旺袁永盛李锁明王万能赵见波余杨忠中国地质调查局昆明自然资源综合调查中心昆明650111 自然资源部自然生态系统碳汇工程技术创新中心昆明650111

在Columbia超大陆的聚合和裂解过程中,扬子板块西南缘扮演着重要角色,前人认为Columbia超大陆在古元古代末期—中元古代中期裂解,对于其最初裂解在扬子板块西南缘的响应时间存在~1.85 Ga及~1.75 Ga两种认识(liu Kang et al.,2019;刘军平... 详细信息

在Columbia超大陆的聚合和裂解过程中,扬子板块西南缘扮演着重要角色,前人认为Columbia超大陆在古元古代末期—中元古代中期裂解,对于其最初裂解在扬子板块西南缘的响应时间存在~1.85 Ga及~1.75 Ga两种认识(liu Kang et al.,2019;刘军平等,2020)。扬子板块西南缘广泛分布的古元古代1.77~1.65 Ga板内镁铁质岩浆活动代表着超大陆裂解的高峰,而古元古代双峰式岩浆作用则相对罕见。

关键词： Columbia超大陆双峰式岩浆事件扬子西南缘 A型花岗岩辉绿岩

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Geology and Genesis of the Superlarge Jinchang Gold Deposit,NE China

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Acta Geologica Sinica(English Edition) 2008年第4期82卷 750-761页

作者： JIA Guozhi CHEN Jinrong YANG Zhaoguang BIAN Hongye WANG yangzhong liANG Haijun JIN Tonghe li Zhenhui No. 1 Brigade Division of Gold People＇s Armed Police Force Harbin Heilongjiang 150086 Institute of Gold Geology Division of Gold People＇s Armed Police Force Langfang Hebei 065000 No. 1 Team Division of Gold People＇s Armed Police Force Mudanjiang Heilongjiang 157000 No. 3 Team Division of Gold People＇s Armed Police Force Harbin Heilongjiang 150049

The superlarge Jinchang gold deposit is located in the joint area between the Taipingling uplift and the Laoheishan depression of the Xingkai Block in both eastern Jilin and eastern Heilongjiang Province. Wall rocks of the gold deposits are the Neoproterozoic Huangsong Group of metamorphic rocks. Yanshanian magmatism in this region can be divided into 5 phases, the diorite, the graphic granite, the granite, the granite porphyry and the diorite porphyrite, which resulted in the magmatic domes and cryptoexplosive breecia chimney followed by large-scale hydrothermal alteration. Gold mineralization is closely related to the fourth and fifth phase of magmatism. According to the occurrences, gold ores can be subdivided into auriferous pyritized quartz vein, auriferous quartz-pyrite vein, auriferous polymetailic sulfide quartz vein and auriferous pyritized calcite vein. The ages of the gold deposit are ranging from 122.53 to 119.40 Ma. The ore bodies were controlled by a uniform tectono-magmatic hydrothermal alteration system that the ore-forming materials were deep derived from and the ore-forming fluids were dominated by magmatic waters with addition of some atmospheric water in the later phase of mineralization. Gold mineralization took place in an environment of medium to high temperatures and medium pressures. Ore-forming fluids were the K^＋-Na^＋-Ca^2＋-Cl^--SO4^2- type and characterized by medium salinity or a slightly higher, weak alkaline and weak reductive. Au in the ore-forming fluids was transported as complexes of [Au （HS）2]^-, [AuCl2]^-, [Au（CO2）]^- and [Au（HCO3）2]^-. Along with the decline of temperatures and pressures, the ore-forming fluids varied from acidic to weak acidic and then to weak alkaline, which resulted in the dissociation of the complex and finally the precipitation of the gold.

关键词： magmatic dome cryptoexplosive breccia pipe ring and radial faults gold deposit,superlarge Jinchang Taipingling Heilongjiang

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A high-fiber diet synergizes with Prevotella copri and exacerbates rheumatoid arthritis

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Cellular & Molecular Immunology 2022年第12期19卷 1414-1424页

作者： lingjuan Jiang Mengmeng Shang Shengnan Yu Yudong liu Hui Zhang yangzhong Zhou Min Wang Tingting Wang Hui li Zhihua liu Xuan Zhang Department of Medical Research Center National Science and Technology Key Infrastructure on Translational MedicinePeking Union Medical College HospitalDepartment of RheumatologyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China State Key Laboratory of Complex Severe and Rare Diseases Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China Department of Rheumatology Beijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineClinical Immunology CenterChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China Department of Pathology Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China Department of Internal Medicine Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China Key Laboratory of Infection and Immunity Institute of BiophysicsChinese Academy of SciencesBeijing100101China Institute for Immunology School of MedicineTsinghua UniversityBeijing100084China Tsinghua-Peking Center for life Sciences Beijing100084China

Both preclinical and established rheumatoid arthritis(RA)patients display alterations in the gut *** *** preferentially enriched in a subset of RA ***,we isolated a Prevotella strain,*** RA,from the feces of RA patients and showed that colonization of *** RA exacerbated arthritis in a collagen-induced arthritis(CIA)*** the presence of *** RA colonization,a high-fiber diet exacerbated arthritis via microbial alterations and intestinal *** of *** together with a high-fiber diet enabled the digestion of complex fiber,which led to the overproduction of organic acids,including fumarate,succinate and short-chain fatty *** promoted proinflammatory responses in macrophages,and supplementation with succinate exacerbated arthritis in the CIA *** findings highlight the importance of dysbiosis when evaluating the effects of dietary interventions on RA pathogenesis and provide new insight into dietary interventions or microbiome modifications to improve RA management.

关键词： Rheumatoid arthritis Dysbiosis Prevotella copri High-fber diet Microbiota-derived metabolites

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乌蒙山地区茅口组中上部火山物质的发现:峨眉地幔柱早期活动的证据

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地质通报 2024年第7期43卷 1207-1220页

作者：张宏辉杨朝李致伟陈贵仁余杨忠袁永盛李锁明张耀堂张沥元赵见波吴亮潘江涛中国地质调查局昆明自然资源综合调查中心云南昆明650111 自然资源部自然生态系统碳汇工程技术创新中心云南昆明650111 中国地质大学(武汉)地质过程与矿产资源国家重点实验室湖北武汉430074 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京100029 中国地质调查局地球物理调查中心河北廊坊065000

峨眉地幔柱活动是显生宙重要的地质事件,为了加深对滇东北乌蒙山地区峨眉地幔柱活动演化的认识,对该区茅口组中上部凝灰岩的同位素年龄、锆石微量元素、锆石Lu-Hf同位素、牙形石生物地层等进行了研究。研究区茅口组中上部的凝灰岩为滇... 详细信息

峨眉地幔柱活动是显生宙重要的地质事件,为了加深对滇东北乌蒙山地区峨眉地幔柱活动演化的认识,对该区茅口组中上部凝灰岩的同位素年龄、锆石微量元素、锆石Lu-Hf同位素、牙形石生物地层等进行了研究。研究区茅口组中上部的凝灰岩为滇东北乌蒙山地区峨眉地幔柱活动演化增加了新的岩石学证据,其最底层凝灰岩的锆石U-Pb年龄为268.7±1.7 Ma(MSWD=0.89,n=8);发现的牙形石为Jinogondolella aserrata,是二叠系瓜德鲁普统沃德阶的典型分子,与锆石U-Pb年龄对应。茅口组凝灰岩锆石微量元素特征显示其为基性岩浆锆石,具有大陆弧型构造背景及较高的Th/Nb值,可能代表峨眉山大火成岩省大规模喷发之前的火山活动。茅口组凝灰岩锆石Hf同位素特征显示,εHf(t)值为-6.7~11.6,大部分为负值,少量正值,具不均一性,反映该时期的火山活动除地幔柱物质参与外还有较多地壳物质的加入。茅口组凝灰岩的发现表明,峨眉地幔柱在乌蒙山地区于瓜德鲁普统沃德期已经发生小规模的岩浆喷发活动,该时期地幔柱的作用主要表现为对岩石圈热量的传导及部分地幔物质参与的熔融作用,为峨眉地幔柱模型的建立增加了新的证据。

关键词：地幔柱峨眉山玄武岩火山活动茅口组牙形石锆石U-Pb年龄 Lu-Hf同位素地质调查工程

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Protein-protein interaction analysis in crude bacterial lysates using combinational method of ^19F site-specific incorporation and ^19F NMR

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Protein & Cell 2017年第2期8卷 149-154页

作者： Dong li Yanan Zhang Yao He Chengwei Zhang Jiefei Wang Ying Xiong Longhua Zhang yangzhong liu Pan Shi Changlin Tian Hefei National Laboratory for Physical Science at the Microscale School of life Science University of Science and Technology of China Hefei 230026 Anhui China School of Chemistry University of Science and Technology of China Hefei 230026 Anhui China

Protein-protein interactions （PPI） are essential for a variety of cellular functions. Many PPI analyses were conducted in vitro, using purified proteins. In this report, the unnatural amino acid tfmF was site-specifically incorporated into several different sites of two Phox-Beml （PB1） domains from two mitogen activated protein kinases （MEKK3 and/ or MEK5） in the E. coil cells.

关键词： Nuclear Magnetic Resonance Chemical Shift Change Nuclear Magnetic Resonance Method Crude Lysate Crude Cell Lysate

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The theoretical study on intermittency and propagation of geodesic acoustic mode in L-mode discharge near tokamak edge

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Plasma Science and Technology 2021年第3期23卷 30-50页

作者： Zhaoyang liU yangzhong ZHANG Swadesh Mitter MAHAJAN Adi liU Tao XIE Chu ZHOU Tao LAN Jinlin XIE Hong li Ge ZHUANG Wandong liU School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People's Republic of China Center for Magnetic Fusion Theory Chinese Academy of SciencesHefei 230026People's Republic of China Institute for Fusion Sudies University of Texas at AustinAustinTX 78712United States of America School of Science Sichuan University of Science and EngineeringZigong 643000People's Republic of China

Through a systematically developed theory,we demonstrate that the motion of Instanton identified in Zhang et al(2017 *** 24122304)is highly correlated to the intermittent excitation and propagation of geodesic acoustic mode(GAM)that is observed in *** many numerical simulations have observed the phenomena,it is the first theory that reveals the physical mechanism behind GAM intermittent excitation and *** preceding work is based on the micro-turbulence associated with toroidal ion temperature gradient mode,and slab-based phenomenological model of zonal *** full toroidal effect is introduced into the system,two branches of zonal flow emerge:the torus-modified low frequency zonal flow(TLFZF),and GAM,necessitating a unified exploration of GAM and ***,we observe that the transition from the Caviton to Instanton is triggered by a rapid zero-crossing of radial group velocity of drift wave and is found to be strongly correlated with the GAM *** features peculiar to intermittent GAMs,observed in real machines,are thus identified in the numerical *** results will be displayed in figures and in a movie;first for single central rational surface,and then with coupled multiple central rational *** periodic bursting first shown disappears as being replaced by irregular one,more similar to the intermittent characteristics observed in GAM experiments.

关键词： zonal flow drift wave intermittency GAM L–H mode

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