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Yb^(3+)-and Er^(3+)-doped Y_(2)O_(3) microcrystals for upconversion photoluminescence and energy transfer with enhancements of near-ultraviolet emission

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Rare Metals 2021年第1期40卷 123-127页

作者： Jin-Bo Zhao li-li wu School of Materials Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Key Laboratory for liquid-Solid Structural Evolution and Process of Materials(Ministry of Education) Shandong UniversityJinan 250061China School of Materials Science and Engineering Shandong UniversityJinan 250061China

Yb^(3+)and Er^(3+)were doped into Y_(2)O_(3) to form Y_(2)O_(3):Yb^(3+),Er^(3+)*** effect of doping concentration of Yb^(3+)was *** near-ultraviolet(UV)upconversion(UC)emission spectra of Y_(2)O_(3):Yb^(3+),Er^(3+)were studied under 1.55-μm *** near-UV UC emissions centered at 391 and 418 nm were enhanced by Yb^(3+)under 1.55-μm laser ***^(3+)generally acts as activator and is not used as sensitizer in the reference Er^(3+)-doped *** the present upconversion process under the 1.55-μm laser excitation,the energy transfer from Er^(3+)to Yb^(3+)and then Yb^(3+)to Er^(3+)was *** Er^(3+)acted as not only activator but also *** energy transfer between Er^(3+)and Yb^(3+)enhanced the near-UV UC emission of our materials.

关键词： Upconversion Photoluminescence Y_(2)O_(3):Yb^(3+)/Er^(3+) 1.55-μm excitation Optical materials and properties

Phenotypic Classification of Well-Differentiated Gastric Adenocarcinoma

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Chinese Journal of Cancer Research 2009年第4期21卷 278-289页

作者： Ying wu Zhong-wu li Ji-you li Key Laboratory of Carcinogenesis and Translational Research （Ministry of Education） Department ofPathology Peking University School of Oncology Beijing Cancer Hospital ＆ Institute Beijing 100142China

Objective： To investigate the genotypes of well-differentiated non-cardiac gastric adenocarcinoma and their clinicopathological significance. Methods： Sixty-four cases of well-differentiated non-cardiac gastric adenocarcinoma were included in this study. The expressions of intestinal phenotypic markers including CDX2, MUC2, li-cadherin, CD10, Hepatocyte（Hep） and Villin, and gastric phenotypic markers including MUC5AC and pS2 were detected immunohistochemically. Based on the expressions of phenotypic markers, 64 cases can be divided into four phenotypes. Cases only expressing intestinal phenotypic markers were classified as intestinal phenotype; cases only expressing gastric phenotypic markers as gastric phenotype; cases expressing both intestinal and gastric phenotypic markers as gastrointestinal phenotype; and cases expressing neither intestinal nor gastric phenotypic marker as null phenotype. The association of phenotype and clinic-pathological parameters was analyzed. We also detected the expressions of markers related to the development and progression of cancer, including Rb, P53, c-Met, MIF, TGF-β-RII, β-catenin, CD44v6 and E-cadherin. Results： Of 64 cases, 33（51.6%） were intestinal type, 3（4.7%） were gastric type, 25（39.1%） were gastrointestinal type and 3（4.7%） were null type. Fifty-eight cases were either intestinal or gastrointestinal type, which accounted for 90.6% of all the cases. In addition, there was an association between phenotype and biological behaviors （invasion or metastasis）. The biological behaviors of intestinal and gastrointestinal type were better than gastric type. Compared with intestinal, gastric and gastrointestinal types, the biological behaviors of null type were the most aggressive. The biological behaviors of gastric carcinoma tended to be better as the number of expression of intestinal markers increased. Expression of markers related to the development and progression of cancer was not significantly correlated with phenotypes a

关键词： Gastric carcinoma Phenotype Immunohistochemistry Biological behavior

大健康背景下高校图书馆健康信息素养教育现状及实践策略研究

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大学图书情报学刊 2025年第1期43卷 73-78页

作者：罗丽吴丽丽赵曦邢雪重庆医科大学图书馆 401331 辽宁中医药大学图书馆沈阳110000

健康信息素养教育是健康中国行动背景下高校图书馆教育服务的新方向。文章运用网络调研、文献调研及电话咨询等方式,调查分析100所高校图书馆开展健康信息素养教育的现状,全面总结其特点及存在的问题,并基于实践需求提出四方面发展策略... 详细信息

健康信息素养教育是健康中国行动背景下高校图书馆教育服务的新方向。文章运用网络调研、文献调研及电话咨询等方式,调查分析100所高校图书馆开展健康信息素养教育的现状,全面总结其特点及存在的问题,并基于实践需求提出四方面发展策略:强化健康信息素养教育意识,搭建协同共建共享机制;整合、创新健康素养教育方式,增强生动趣味性;注重健康教育内容的全面性和层次性建设,突出重点;细化健康教育受众群体,提高服务对象针对性等,以期为更多高校图书馆开展健康信息素养教育提供参考。

关键词：高校图书馆健康信息素养健康教育大学生健康中国

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An Experimental Study of Features Search under Visual Interference in Radar Situation-Interface

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Chinese Journal of Mechanical Engineering 2018年第3期31卷 144-157页

作者： Xiao-li wu Jing li Feng Zhou China College of Mechanical and Electrical Engineering Hohai University College of Furnishings and Industrial Design Nanjing Forestry University

As was found through information interface analysis of target search in fighter radar situation environment,there are many of visual attention problems caused by complex environment and features,which generate visual interfer?ence. This paper extracts the interference environment of situation interface and the feature of information matter as the major factors,also and adopts the interference environment,featured items and quantity as three variables to conduct the experimental study on simulation of the feature search fighter information identification. The experi?mental results showed that the information identification under low and high interference environments revealed to a significant di erence. Due to the high interference environment formed by various information presented in the radar situation?interface,only if being forcibly free from interference could the pilots be able to realize the information identification precisely. Three features,i.e.,regular shape?single color,irregular shape?single color and irregular shape?hybrid color,presented a trend of progressive increase of reaction time,which suggested that irregular shape?hybrid color was the di cult cognition and the long reaction time. The eye movement data also suggested that the target search under high interference environment displayed the longer fixation time,more saccade counts and longer scan path,than under low interference environment. In addition,the first saccade time,the total fixation time and saccade counts of featured items search presented an increasing trend,which is the same as reaction. Therefore,the colors and shapes of featured items exerted a remarkable influence to the judgment of objects target. In conclusion the interference environment and the information matter features both have played the important roles in influence of the information identification in the radar situation?interface. The environment and the features are the design fac?tors,which needed for consideration

关键词： Radar situation?interface Goal?seeking Visual interference Interference environment Information matter features Target identification Visual displays

On the Compactness of Grunsky Differential Operators

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Chinese Annals of Mathematics,Series B 2020年第4期41卷 559-572页

作者： li wu Yuliang SHEN Department of Mathematics Soochow UniversitySuzhou 215006JiangsuChina.

Grunsky operators play an important role in classical geometric function theory and in the study of Teichmüller *** Grunsky map is known to be holomorphic on the universal Teichmüller *** this paper the authors deal with the compactness of a Grunsky differential *** will give upper and lower estimates of the essential norm of a Grunsky differential operator and discuss when a Grunsky differential operator is a p-Schatten class operator.

关键词： Universal Teichmüller space Beltrami coefficient Grunsky operator Compact operator p-Schatten class operator Essential norm

Correlation between mechanical and thermodynamic properties for La-Ce-Ni-Cu-Al high-entropy metallic glasses

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Journal of Iron and Steel Research International 2018年第6期25卷 658-665页

作者： lin wu Yong Zhao Jun-jun li Ji-li wu Bo Zhang Institute of Amorphous Matter Science and School ofMaterials Science and Engineering Hefei University of Technology Hefei 230009 Anhui China

The mechanical properties, thermodynamic features and their correlation were studied for La-Ce-Ni-Cu-Al high-entropy bulk metallic glasses （HE-BMGs）. Compressive testing indicated that the HE-BMGs are ductile on a microscopic scale but brittle on a macroscopic scale, because of the low fragility index rn of the HE-BMGs. In the non-isothermal process, the activation energies for glass transition for these HE-BMGs are the lowest of the known HE-BMGs. Large values of the Avrami exponent n imply that the crystallization process proceeded through three-dimensional growth and with an increasing nucleation rate. The activation energy for glass transition （Eg） is almost proportional to the HE-BMG fracture strength, because a higher Eg is required to dislodge the molecules from the glassy configuration for the HE-BMGs with a high strength. The findings provide unambiguous evidence for the correlation between the mechanical and thermodynamic properties.

关键词： High-entropy bulk metallic glass Fracture mechanism Crystallization Avrami exponent Glass-transitionactivation energy

Kimura's disease in soft palate with clinical and histopathological presentation: A case report

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World Journal of Clinical Cases 2022年第12期10卷 3842-3848页

作者： wu li Department of Head and Neck Surgery Hunan Cancer Hospital&the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangsha 410000Hunan ProvinceChina

BACKGROUND Kimura’s disease is an inflammatory disease that is usually found in the deep lymph nodes of the head and *** rare,It is most frequently seen in young *** oral cavity and salivary glands may also be *** are no reports on tumor occurring in soft *** have encountered a case of Kimura’s disease in the soft palate of an elderly *** SUMMARY A 63-year-old elderly Chinese woman with a slowly growing mass in the upper jaw was referred to our service.A biopsy to the mass was taken after the patient was referred to our *** tumor was diagnosed as *** performed cervical lymph node puncture and partial surgical excision of the *** tumor,which showed signs of marked follicular hyperplasia with follicles surrounded by eosinophils and lymphocytes,was located within the soft ***’s disease was diagnosed after histopathologic examination of the resected *** etiology of Kimura’s disease is not fully *** current model includes T-cells involvement with cytokines also playing a *** patient was without evidence for recurrence of partially resected area 6 mo *** report shows that Kimura’s disease is not limited to the head,neck,and salivary gland lymph *** present a case of a tumor in soft *** location adds another possible site for consideration during the differential diagnoses of a slowly growing *** The present case illustrates a characteristic description of Kimura’s *** case highlights the main differences between Kimura’s disease and angiolymphoid hyperplasia with eosinophilia.

关键词： Kimura's disease Soft palate Clinical manifestations Histopathological presentation Case report

Mesoscopic analysis of the utilization of hardening model for a description of softening behavior based on disturbed state concept theory

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第9期9卷 1167-1175页

作者： Jian-ye ZHENG An-li wu Guangzhou Metropolis Construction Commission Guangzhou 510030 China College of Civil Engineering and Architecture lnner Mongolia University of Technology Hohhot 010051 China

Mesoscopic characteristics of a clayey soil specimen subjected to macroscopic loading are examined using a medi- cal-use computerized tomography (CT) instrument. Disturbed state concept (DSC) theory is based on the utilization of the hard- ening model. DSC indirectly describes material behavior by claiming that the actual response of the material is expressed in terms of the relative intact (RI) response and the fully adjusted (FA) response. The occurrence of mesoscopic structural changes of material has similarities with the occurrence of a macroscopic response of the material under loadings. In general, the relative changing value of a softening material is three to five times more than that of a hardening material. Whether special zones exist or not in a specimen cross section does not affect the following conclusion: hardening material and softening material show me- chanical differences with CT statistical indices values prominently changing, and the change is related to the superposing of a disturbance factor. A new disturbance factor evolution function is proposed. Thus, mesoscopic statistical indices are introduced to describe macroscopic behavior through the new evolution function. An application of the new evolution function proves the effectiveness of the amalgamation of a macroscopic and a mesoscopic experimental phenomenon measurement methods.

关键词： Constitutive model Disturbed state concept (DSC) Computerized tomography (CT) Softening

Numerical Investigation of the Fluid Flow Characteristics in the Hub Plate Crown of a Centrifugal Pump

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Chinese Journal of Mechanical Engineering 2018年第4期31卷 182-191页

作者： Wei Dong wu-li Chu School of Power and Energy Northwestern Polytechnical University Collaborative Innovation Center of Advanced AeroEngine

Due to the lack of understanding in the flow mechanism of the hub plate crown, the current calculation of the disc friction loss and the axial thrust in the centrifugal pump often uses empirical formulas. Research on the flow characteristics of the hub plate crown is of practical significance. The shroud and hub cavities are respectively studied with regard to tangential and radial velocities at the four different angular positions(0°, 90°, 180°, and 270°) at the four different operational points(0.6 Qsp, 0.8 Qsp, 1.0 Qsp, and 1.2 Qsp). Results indicate that at the same operational point, the smaller the volute chamber sectional area is, the higher the tangential velocity of the fluid core zone of the shroud cavity is. Radial leakage flow from the volute to the seal ring at the same operational point appears in 0° and 90° direction;when the flow is large, the tangential and radial velocities of the shroud and hub cavities with the same radius tend to be equal with axial symmetry. The axial leakage flow through the balance holes significantly affects the radial distribution of both tangential and radial velocities of fluid flow in the hub cavity. The numerical calculation results of fluid leakage through the clearance of back sealing ring are in good agreement with the test results. Accordingly, the magnitude of leakage is closely related to the fluid pressure and velocity distribution in the hub plate crown of the centrifugal pump. The analysis of the flow characteristics in the hub plate crown of the centrifugal pump could reveal the cause of the disc friction loss from the mechanism, providing a significant guidance for improving the accuracy of calculation and balancing the axial thrust in the centrifugal pump.

关键词： Centrifugal pump Shroud cavity Hub cavity Leakage of clearance Numerical simulation