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Interface formation energy,bonding,energy band alignment in α-NaYF4 related core shell models:For future multi-layer core shell luminescence materials

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Journal of Rare Earths 2017年第4期35卷 315-334页

作者：黄勃龙董浩 Wong ka-Leung 孙聆东严纯华 Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Beijing National Laboratory for Molecular sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryCollege of Chemistry and Molecular EngineeringPeking University Department of Chemistry Hong Kong Baptist University

To break through the bottle-neck of quantum yield in upconversion （UC） core-shell system, we elucidated that the energy transfer efficiency in core-shell system had an evident contribution from the charge transfer of interface with related to two factors：（i） band offsets and （2） binding energy area density. These two variables were determined by material intrinsic properties and core-shell thickness ratio. We further unraveled the mechanism of non-radiative energy transfer by charge transfer induced dipole at the inter- face, based on a quasi-classical derivation from F6rster type resonant energy transfer （FRET） model. With stable bonding across the interface, the contributions on energy transfer in both radiative and non-radiative energy transfer should also be accounted together in Auzel＇s energy transfer （ETU） model in core-shell system. Based on the discussion about interface bonding, band offsets, and forma- tion energies, we figured out the significance of interface bonding induced gap states （IBIGs） that played a significant role for influ- encing the charge transfer and radiative type energy transfer. The interface band offsets were a key factor in dominating the non-radiative energy transfer, which was also correlated to core-shell thickness ratio. We found that the energy area density with re- lated to core/shell thickness ratio followed the trend of Boltzman sigmoidal growth function. By the physical trend, this work contrib- uted a reference how the multi-layered core-shell structure was formed starting from the very beginning within minimum size. A route was paved towards a systematic study of the interface to unveil the energy transfer mechanism in core-shell systems.

关键词： interface band-offset core-shell energy-transfer rare earths

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护理领域证据临床实施障碍因素的研究进展

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中华护理杂志 2024年第18期59卷 2290-2296页

作者：杨福娜徐晓霞石红英何家欣邾萍王慧琳郑州大学附属肿瘤医院/河南省肿瘤医院护理部郑州市450008 郑州大学附属肿瘤医院/河南省肿瘤医院院长办公室郑州市450008 香港理工大学护理学院中国香港江苏省肿瘤医院肿瘤内科中国医学科学院北京协和医学院肿瘤医院早诊早治办公室

护理工作作为全球卫生健康事业的重要组成部分,护理学科开展实施性研究任重而道远。如何减少证据与护理实践之间的差距,将证据传播和应用到护理实践中,是护理领域亟需解决的问题。该研究基于实施科学视角,梳理了护理领域证据临床实施现... 详细信息

护理工作作为全球卫生健康事业的重要组成部分,护理学科开展实施性研究任重而道远。如何减少证据与护理实践之间的差距,将证据传播和应用到护理实践中,是护理领域亟需解决的问题。该研究基于实施科学视角,梳理了护理领域证据临床实施现状、临床实施障碍因素的理论框架、临床实施障碍因素分析的研究方法及具体内容,并提出相关建议,以期为进一步推动护理领域证据的实施提供指导。

关键词：实施科学护理学证据实施障碍因素综述

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On Problems of Multicomponent system Maintenance Modelling

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International Journal of Automation and computing 2009年第4期6卷 364-378页

作者： Tomasz Nowakowski sylwia Werbin'ka Department of Logistics and Transportation systems Wroclaw University of Technology

We present an overview of some recent developments in the area of mathematical modeling of maintenance decisions for multi-unit systems. The emphasis is on three main groups of multicomponent maintenance optimization models： the block replacement models, group maintenance models, and opportunistic maintenance models. Moreover, an example of a two-unit system maintenance process is provided in order to compare various maintenance policies.

关键词： Multicomponent systems corrective and preventive maintenance maintenance free operating periods (MFOP) concepts.

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Application of Rayleigh Light scattering spectroscopy to the Determination of Proteins Using Bromo-Pyrogallol Red

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Chinese Chemical Letters 1997年第1期8卷 57-58页

作者： Ma, CQ Li, ka Tong, sY BEIJING UNIV DEPT CHEMBEIJING 100871PEOPLES R CHINA

The binding of bromo-pyrogallol red (BPR) to proteins is accompanied by the enhancement of Rayleigh light scattering at 332nm. and based on this a new quantitative protein assay method is put forward.

关键词： Application of Rayleigh Light scattering spectroscopy to the Determination of Proteins Using Bromo-Pyrogallol Red

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Prognostic values of tumor endothelial markers in patients with colorectal cancer

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World Journal of Gastroenterology 2005年第9期11卷 1283-1286页

作者： ka Rmali MCA Puntis WG Jiang Metastasis and Angiogenesis Research Group University Department of surgery

AIM: Tumor endothelial markers (TEMs) are a newly discovered family of endothelial markers associated with tumor specificangiogenesis. This study sought to examine the levels of expression (qualitatively and quantitatively)for TEMs in human colon ***: Human colorectal cancer tissues (n = 48)and normal background tissues (n = 31) were obtained after surgery. RNA was extracted from frozen sections for gene amplification. The expression of TEMs (TEM-1to TEM-8) was assessed using RT-PCR and their transcript levels were determined using real-time-quantitative PCR(Q-RT-PCR).ResULTs: TEM-1 (P = 0.01), TEM-7 (P = 0.04), TEM-7R(P= 0.03), TEM-8 (P = 0.001) significantly raised in colon cancer tissues compared with the levels detected in normal background tissues. The expressions of TEM-2 and TEM-6were found to be not significantly different between tumor tissues and normal tissues (P＞0.05). Patients who had cancer penetrating into and through the muscularis propria of the bowel wall and developed nodal involvement(Dukes C) exhibited significantly higher levels of TEM -8compared to patients who were node negative (P＜0.05).TEM-7 and TEM-7R showed high level of transcripts in Dukes C, but they were not statistically ***: The level of the expression of TEM-1,TEM-7, TEM-7R and TEM-8 (but not TEM-2 and TEM-6)were associated with both nodal involvement and disease progression, and may therefore, have a prognostic value in colorectal cancer.

关键词： Colon cancer Angiogenesis Tumor endothelial markers Dukes stages

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A　study　on　the　Reaction　Mechanism　of　Bromocresol　Green　with　Bovine　serum　Albumin

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Chinese Chemical Letters 1996年第11期7卷 1029-1032页

作者： Zhu, K Li, ka Tong, sY BEIJING UNIV DEPT CHEMBEIJING 100871PEOPLES R CHINA

The protein assay with bromocresol green (BCG) method is commonly ed because of itsconvenience, but it is not well understood on a molecular level. In this paper, the study on thereaction between BCG and bovine serum albumin (BsA) is reported The binding numbers and thebinding constants are given at different pH by using three methods with relevant comparison. It wasProved that there were three sorts of binding sites of BsA to react with BCG and BCG transformedinto its boo form in the presence of BsA.

关键词： Reaction Mechanism the Bovine Green Bromocresol

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用于微波热疗的小型化开缝微带贴片和金属腔复合天线

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真空电子技术 2024年第2期 33-39页

作者：胡琨肖麒黄卡玛四川大学电子信息学院四川成都610065

传统的治疗癌症方法往往会产生严重的副作用。作为一种微创、高效、低毒的绿色治疗方法,近年来微波热疗受到越来越多人的青睐。本研究的重点是设计和评估用于热疗的工作频率为2450 MHz的微型开缝贴片天线。天线贴片呈八角形,包含4个对称... 详细信息

传统的治疗癌症方法往往会产生严重的副作用。作为一种微创、高效、低毒的绿色治疗方法,近年来微波热疗受到越来越多人的青睐。本研究的重点是设计和评估用于热疗的工作频率为2450 MHz的微型开缝贴片天线。天线贴片呈八角形,包含4个对称槽,以减小尺寸并改善定向辐射。天线与组织之间增加了一个开放式金属腔,以保持预设距离,防止贴片直接接触皮肤,实现更好的阻抗匹配,减少对周围区域的能量辐射。根据比吸收率(sAR)、穿透深度(PD)和有效场强(EFs)对天线的性能进行评估,加工制作了天线并在猪肉组织中进行了测试,测量结果与模拟结果非常吻合。

关键词：小型化八边形贴片金属腔微波热疗比吸收率

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ERROR esTIMATes FOR THE TIME DIsCRETIZATION FOR NONLINEAR MAXWELL's EQUATIONs

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Journal of Computational Mathematics 2008年第5期26卷 677-688页

作者： Mavián slodika Ján Bua Jr. Department of Mathematical Analysis Ghent University

This paper is devoted to the study of a nonlinear evolution eddy current model of the type δtB（H）＋ △↓× （ △↓ × H） =0 subject to homogeneous Dirichlet boundary conditions H × v = 0 and a given initial datum. Here, the magnetic properties of a soft ferromagnet are linked by a nonlinear material law described by B（H）. We apply the backward Euler method for the time discretization and we derive the error estimates in suitable function spaces. The results depend on the nonlinearity of B（H）.

关键词： Electromagnetic field Nonlinear eddy current problem Time discretization,Error estimate.

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工匠精神融入工科高校学风建设路径探究

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大学（研究与管理） 2024年第4期 34-37页

作者：樊玉华任伟健靳凯山东科技大学机械电子工程学院山东青岛266590

当前,我国正处于实现中华民族伟大复兴的关键时期,对高质量人才的需求更加迫切。高校作为人才培养的重要场所,肩负着“为党育人、为国育才”的重要使命,学风建设作为大学精神的集中体现,是立德树人的本质要求,更是高校培养高素质人才、... 详细信息

当前,我国正处于实现中华民族伟大复兴的关键时期,对高质量人才的需求更加迫切。高校作为人才培养的重要场所,肩负着“为党育人、为国育才”的重要使命,学风建设作为大学精神的集中体现,是立德树人的本质要求,更是高校培养高素质人才、实现高质量科技创新的坚实基础和强力保障。文章立足工科高校专业和学生特点,分析工匠精神内涵意蕴,提出将其融入工科高校学风建设的对策建议,旨在帮助高校落实立德树人根本任务,提高人才培养质量,促进大学生全面成长成。

关键词：工匠精神工科高校学风建设

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Probabilistic characterization of cyclic shear modulus reduction for normally to moderately over-consolidated clays

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Earthquake Engineering and Engineering Vibration 2016年第3期15卷 495-508页

作者： Iok-Tong Ng ka-Veng Yuen Ngai-Kuan Lao Dept.of Civil and Environmental Engineering Faculty of Science and Technology University of Macao

Evaluation of the cyclic shear modulus of soils is a crucial but challenging task for many geotechnical earthquake engineering and soil dynamic issues. Improper determination of this property unnecessarily drives up design and maintenance costs or even leads to the construction of unsafe structures. Due to the complexities involved in the direct measurement, empirical curves for estimating the cyclic shear modulus have been commonly adopted in practice for simplicity and economical considerations. However, a systematic and robust approach for formulating a reliable model and empirical curve for cyclic shear modulus prediction for clayey soils is still lacking. In this study, the Bayesian model class selection approach is utilized to identify the most significant soil parameters affecting the normalized cyclic shear modulus and a reliable predictive model for normally to moderately over-consolidated clays is proposed. Results show that the predictability and reliability of the proposed model out performs the well-known empirical models. Finally, a new design chart is established for practical usage.

关键词： Bayesian analysis cyclic shear modulus empirical model geotechnical earthquake engineering normally tomoderately over-consolidated clays

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