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Nanocrystalline La2Mo2O9 and Its Characterization

Journal of Rare Earths 2004年第z2期22卷 102-106页

作者： Li Qin xia tian Li Jiayan liu xiangdong Ma xianfeng Meng Jian Cao Xueqiang Key Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied ChemistryChinese Academy of Sciences.Changchun 130022China Key Laboratory of Rare Earth Chemistry and PhysicsChangchun Institute of Applied ChemistryChinese Academy of Sciences.Changchun 130022China Key Laboratory of Rare Earth Chemistry and PhysicsChangchun Institute of Applied ChemistryChinese Academy of Sciences.Changchun 130022China Key Laboratory of Rare Earth Chemistry and PhysicsChangchun Institute of Applied ChemistryChinese Academy of Sciences.Changchun 130022China Key Laboratory of Rare Earth Chemistry and PhysicsChangchun Institute of Applied ChemistryChinese Academy of Sciences.Changchun 130022China Key Laboratory of Rare Earth Chemistry and PhysicsChangchun Institute of Applied ChemistryChinese Academy of Sciences.Changchun 130022China Key Laboratory of Rare Earth Chemistry and PhysicsChangchun Institute of Applied ChemistryChinese Academy of Sciences.Changchun 130022China

In this work, both the thermal expansion and electrical conductivity of nanocrystalline La2Mo2O9 were *** nanocrystalline powder of La2Mo2O9 was obtained by sol-gel method, and with the help of SHP (superhigh pressure)up to 4.5 × 104 atm at 700 ℃ for a short time, and the nanocrystalline powder was densified without obvious particle size growth. The electrical conductivity of nanocrystalline La2Mo2O9 was one orderof magnitude lower than that of the microcrystalline sample at the same temperature. Owing to the phase transition, the microcrystalline La2Mo2O9 has an abrupt increase of thermal expansion with a peak value of 48 × 10-6 K-1 at 556 ℃. For the nanocrystalline material, the peak value increases to 112 × 10-6 K-1 at 520 ℃. On the other hand, above 600 ℃ the significant growth of particle size of the nanocrystalline La2Mo2O9 was observed, accompanying by a tremendous increase of thermal expansion with a peak value of third higher than that of La2Mo2O9.

关键词： nanocrystalline electrical conductivity lanthanum molybdate superhigh pressure rare earths

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Primary mucosal-associated lymphoid tissue extranodal marginal zone lymphoma of the bladder from an imaging perspective: A case report

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World Journal of Clinical Cases 2021年第32期9卷 10024-10032页

作者： Zhen-Zhen Jiang Yuan-Yuan Zheng Chuan-Ling Hou xia-tian liu Department of Ultrasound Shaoxing People’s Hospital(Shaoxing HospitalZhejiang University School of Medicine)Shaoxing 312000Zhejiang ProvinceChina Department of Pathology Shaoxing People’s Hospital(Shaoxing HospitalZhejiang University School of Medicine)Shaoxing 312000Zhejiang ProvinceChina

BACKGROUND Mucosal-associated lymphoid tissue extranodal marginal zone(MALT)lymphoma is a low-grade tumor that rarely occurs in the urinary *** is currently no consensus on the common imaging findings or most appropriate treatment in MALT lymphoma in the urinary bladder due to the limited number of *** SUMMARY A 48-year-old woman was admitted to the hospital with a 1-year history of macroscopic *** showed a large homogeneous mass with an unclear boundary and an irregular morphology in the *** mass had an abundant blood *** further diagnosis,transurethral cystoscopic biopsy and bone marrow biopsy was performed,and the patient was finally diagnosed with primary MALT lymphoma of the bladder.R-CHOP chemotherapy was carried *** three cycles of chemotherapy,the mass disappeared and the bladder wall thickness was only 4 mm,which indicated excellent therapeutic response to the *** date,the patient remains asymptomatic and she visits our hospital regularly for the completion of the remaining chemotherapy *** Primary MALT lymphoma of the bladder is rare,and there are certain characteristics in the ultrasonographic *** findings play an important role in evaluating the therapeutic efficacy and are critical during long-term follow-up after therapy.

关键词： Mucosal-associated lymphoid tissue extranodal marginal zone lymphoma Bladder Ultrasonography Computed tomography Case report

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Genetically modified pigs:Emerging animal models for hereditary hearing loss

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Zoological Research 2024年第2期45卷 284-291页

作者： xiao Wang tian-xia liu Ying Zhang Liang-Wei Xu Shuo-Long Yuan A-Long Cui Wei-Wei Guo Yan-Fang Wang Shi-Ming Yang Jian-Guo Zhao State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Savaid Medical School University of Chinese Academy of SciencesBeijing 100049China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China Department of Otolaryngology-Head and Neck Surgery Institute of OtolaryngologyChinese PLA General HospitalBeijing 100853China Division of Life Sciences and Medicine University of Science and Technology of ChinaHefeiAnhui 230022China State Key Laboratory of Animal Biotech Breeding Institute of Animal ScienceChinese Academy of Agricultural SciencesBeijing100193China

Hereditary hearing loss(HHL),a genetic disorder that impairs auditory function,significantly affects quality of life and incurs substantial economic losses for *** investigate the underlying causes of HHL and evaluate therapeutic outcomes,appropriate animal models are *** have been extensively used as valuable large animal models in biomedical *** this review,we highlight the advantages of pig models in terms of ear anatomy,inner ear morphology,and electrophysiological characteristics,as well as recent advancements in the development of distinct genetically modified porcine models of hearing ***,we discuss the prospects,challenges,and recommendations regarding the use pig models in HHL ***,this review provides insights and perspectives for future studies on HHL using porcine models.

关键词： Pigs Animal models Hereditary hearing loss Genetic modification Inner ear

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具有微小针肋阵列靶板表面冲击传热性能研究

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工程热物理学报 2018年第9期39卷 1914-1920页

作者：夏添刘宇阳饶宇陈冠江上海交通大学机械与动力工程学院叶轮机械研究所上海200240

本文对具有微小针肋阵列的粗糙靶板表面冲击传热性能进行了稳态实验和数值模拟研究,并与平板冲击传热进行了比较分析。射流雷诺数范围是15000～30000,冲击间距比分别为1.5、3和5。通过稳态实验获得了总体平均冲击传热性能和压力损失,数... 详细信息

本文对具有微小针肋阵列的粗糙靶板表面冲击传热性能进行了稳态实验和数值模拟研究,并与平板冲击传热进行了比较分析。射流雷诺数范围是15000～30000,冲击间距比分别为1.5、3和5。通过稳态实验获得了总体平均冲击传热性能和压力损失,数值计算采用k-ωSST湍流模型分析了冲击传热系统中的流场和传热特性。结果表明:微小针肋结构明显提高了冲击冷却系统总换热量,而压力损失增幅很小;相比于平板冲击传热,冲击间距比为1.5的微小针肋靶板冲击传热量提升幅度最大。数值计算还发现,微小针肋阵列弱化了端壁传热,冲击间距比为1.5、3和5时,微小针肋靶板端壁努塞尔数分别为平板的56.3%、53.0%和46.8%。

关键词：燃气轮机传热冲击冷却微小针肋粗糙表面

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浅谈以创新精神推进“学习型党组织”的建设

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江汉石油职工大学学报 2009年第1期22卷 15-17页

作者：夏天六中石化集团江汉石油管理局分公司井下作业公司湖北潜江433123

党的十六大把建设学习型社会列入全面建设小康社会的战略目标。党的十七大又提出了以改革创新精神全面推进党的建设的命题。建设学习型党组织是新形势下党中央向各级党组织和全体党员干部推出的战略任务,其作用不容忽视,并在实践中不断... 详细信息

党的十六大把建设学习型社会列入全面建设小康社会的战略目标。党的十七大又提出了以改革创新精神全面推进党的建设的命题。建设学习型党组织是新形势下党中央向各级党组织和全体党员干部推出的战略任务,其作用不容忽视,并在实践中不断探索学习型党组织建设的有效方法和途径,努力构建"学习型党组织"建设的长效机制。

关键词：学习型党组织建设

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Research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng liu Xin Ma Shaojie tian Qinghe Cui Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

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Exploration into tricuspid annular geometry and function in patients with functional tricuspid regurgitation by real-time three-dimensional echocardiography

Exploration into tricuspid annular geometry and function in ...

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第二届长三角超声医学论坛暨2009年浙江省超声医学学术年会

作者： Department of Ultrasound,The Second Affiliated Hospital College of Medicine Zhejiang University,Hangzhou 310009,China xia-tian liu xiang-dong YOU xiao-feng BAO Zhao-xia PU Ri JI Lei YU

Objective To evaluate tricuspid annulus alternation in patients with functional tricuspid regurgitation (FTR). Methods Fourteen patients with at least moderate FTR(6 cases with dilated cardiomyopathy,3 cases with isch...

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Potential dependence in electrocatalysis: a theoretical perspective

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Science China Chemistry 2025年第1期 21-25页

作者： Leyu liu Zhaoming xia Zeyu Wang Yinjuan Chen Hai xiao Department of Chemistry Tsinghua University Fundamental Science Center of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University

Electrocatalysis is a key technology for the new energy era and sustainable development, serving as the interface for interconversion of electrical and chemical energies, which spans a wide spectrum of applications in sustainable energy and environmental engineering. Electrocatalytic reactions including electrochemical CO2reduction reaction （eCO2RR）, hydrogen evolution reaction （HER）, and oxygen evolution/reduction reactions （OER/ORR）, hold essential promise for renewable energy technologies as well as complement the biogeochemical carbon and oxygen cycles.

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不同黄腐酸用量对‘红将军’苹果产量、品质和^(15)N-尿素去向的影响

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应用生态学报 2018年第5期29卷 1412-1420页

作者：彭玲刘晓霞何流田蒙葛顺峰姜远茂山东农业大学园艺科学与工程学院/作物生物学国家重点实验室山东泰安271018

以15年生红将军/八棱海棠为试材,运用^(15)N同位素示踪技术,设置单施尿素(CK)及尿素配施不同用量黄腐酸处理(黄腐酸用量分别为75、150、300和450 kg·hm^(-2),分别以NF_1、NF_2、NF_3和NF_4表示),研究不同黄腐酸用量对苹果植株^(15)N-... 详细信息

以15年生红将军/八棱海棠为试材,运用^(15)N同位素示踪技术,设置单施尿素(CK)及尿素配施不同用量黄腐酸处理(黄腐酸用量分别为75、150、300和450 kg·hm^(-2),分别以NF_1、NF_2、NF_3和NF_4表示),研究不同黄腐酸用量对苹果植株^(15)N-尿素吸收、利用、残留、损失及果实产量和品质的影响.结果表明:至果实成熟期,苹果根系、一年生枝和叶片的Ndff值(植株器官从肥料中吸收分配到的^(15)N量对该器官全氮量的贡献率)均为NF_3>NF_4>NF_2>NF_1>CK,且各处理间差异显著.植株全氮量和^(15)N吸收量均以NF_3处理最大,其次为NF_4处理,CK处理最低.与CK处理相比,NF_1、NF_2、NF_3和NF_4处理^(15)N利用率分别提高了14.2%、33.5%、64.2%和50.0%,而^(15)N损失率分别降低了9.1%、18.5%、37.1%和28.7%.不同处理土壤^(15)N残留量不同.配施黄腐酸处理0~60 cm土层^(15)N残留量显著高于CK处理,其中以NF_3处理最多,而在60~100 cm土层显著低于CK处理.NF_3处理单株产量和纯收益较CK处理增幅最大,分别为15.8%和20.2%,其次为NF_4处理,同时,NF_3处理果实硬度、可溶性固形物含量和糖酸比均达到最高水平.通过对果实产量和氮素利用率与黄腐酸施用量进行拟合分析,得出本试验条件下适宜的黄腐酸用量为326.41~350.61 kg·hm^(-2).

关键词：黄腐酸 15N-尿素苹果产量 15N去向

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Multi-receptive field interaction network for shape from polarization

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Science China(Information Sciences) 2025年第1期 394-395页

作者： Yini PENG Rui liu Zhiyuan ZHANG Zhongyuan WANG Jiayi MA Xin tian Electronic Information School Wuhan University Computer Science School Wuhan University Wuhan Institute of Quantum Technology

Shape from polarization (SfP) method can use the polarization information in reflected light to estimate the surface normal of the target,which can further reconstruct the shape of the *** a simple image capture process,it can use low-cost equipment to meet a high precision imaging requirement,which can be used in remote scenes and other applications.

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