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Chinese Physics Letters 2018年第2期35卷 88-92页

作者： Ai-Xing Li Chun-Lan Mo Jian-Li Zhang Xiao-Lan Wang Xiao-ming Wn Guang-Xu Wang Jun-lin Liu Feng-Yi Jiang National Institute of LED on Silicon Substrate Nanchang University

In GaN-based green light-emitting diodes（LEDs） with and without Mg-preflow before the growth of p-Al GaN electron blocking layer（EBL） are investigated experimentally.A higher Mg doping concentration is achieved in the EBL after Mg-preflow treatment,effectively alleviating the commonly observed efficiency collapse and electrons overflowing at cryogenic ***,unexpected decline in quantum efficiency is observed after Mg-preflow treatment at room *** conclusions are drawn such that the efficiency decline is probably the result of different emission *** Mg doping concentration in the EBL after Mg-preflow treatment will make it easier for a hole to be injected into multiple quantum wells with emission closer to pGaN side through the（8-plane rather than the V-shape pits,which is not favorable to luminous efficiency due to the preferred occurrence of accumulated strain relaxation and structural defects in upper QWs closer to *** this framework,apparently disparate experimental observations regarding electroluminescence properties,in this work,are well reconciled.

关键词： GaN EBL Effect of Mg-Preflow for p-AlGaN Electron Blocking Layer on the Electroluminescence of Green LEDs with V-Shaped Pits

基于分数时延滤波器的起车信号相位精确估计技术

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机械工程学报 2012年第6期48卷 8-13页

作者：谢航林京赵明廖与禾西安交通大学机械制造系统工程国家重点实验室西安710049

起车信号分析是大型回转机械故障诊断的有效手段,其中相位信息的精确估计是起车信号分析的重要内容。由于自由采样以及起车信号本身调频调幅特性等的影响,已有方法往往不能有效实现相位的精确估计。提出一种基于分数时延滤波器的起车信... 详细信息

起车信号分析是大型回转机械故障诊断的有效手段,其中相位信息的精确估计是起车信号分析的重要内容。由于自由采样以及起车信号本身调频调幅特性等的影响,已有方法往往不能有效实现相位的精确估计。提出一种基于分数时延滤波器的起车信号分析方法,由于该方法可以在离散的采样点之间实现分数内插,进而方便地将自由采样的起车信号转换为等角度采样信号,有效实现瞬时相位的精确估计。采用仿真信号和试验结果对该方法的有效性和精确性进行验证。

关键词：起车信号分数时延滤波器相位估计

PHARMACOKINETIC MODELS IN ENTEROHEPATIC CIRCULATION

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生物数学学报 1991年第2期 97-105页

作者： Zhou Huaiwu, Shen Jiaqing, Lu ming(Division of Biomathematics, Zhejiang Medical University, Hangzhou 310006) Liang Wenquan, lin Wu(Division of Pharmaceutics, Zhejiang Medical University, Hangzhou 310006)

Two extended one-and two-compartment model are Proposed to explain the multiple-peak phenomena of drugs subject to enterohepatic circulaion. The models are formed by adding a storage compartment on the basis of corresponding classic *** that the circulation will be repeated at regular intervals until the effective amount of drugs released to absorption compartment can be neglected. The concentration (c)-time(t) equations of bolus intravenous and oral administration undergoing n circulations are deduced to express the quantitative contribution of each circulation. Furthermore, the concept of total bioavailability is introduced to describe the bioavailability of drugs obeying the mechanism of entcrohepatic circulation.

关键词： Pharmacokinetics Models Enterohepatic circulation Bioavailability.

Syntheses and Magnetism of Binuclear Tb(Ⅲ)-Tb(Ⅲ)Complexes with Dianion of Chloranilic Acid as Bridging Ligand

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Chemical Research in Chinese Universities 1992年第2期8卷 143-146页

作者： JIANG Zong-hui, LIU Zong-ming, LIAO Dai-zheng and WANG Geng-lin (Department of Chemistry, Nankai University, Tianjin, 300071)

The syntheses, spec(?) complexes are of significance for understanding mechanisms of magnetic interaction between metal ions and the exploitation of the synthesis of molecular magnetic materials. There were a few work... 详细信息

关键词： Chloranilic acid Binuclear Tb( Ⅲ )-Tb( Ⅲ ) complexes Magnetism

Tropism mechanism of stem cells targeting injured brain tissues by stromal cell-derived factor-1

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Chinese Journal of Traumatology 2009年第5期12卷 -页

作者： ZHANG Sai LIU Xiao-zhi LIU Zhen-lin shang Chong-zhi HU Qun-liang Department of Neurosurgery Affiliated Hospital of Medical College of Chinese People's Armed Police ForceTianjin 300162 China

Objective: To explore the role and function of stromal cell-derived factor- 1 (SDF- 1) in stem cells migrating into injured brain ***: Rat-derived nerve stem cells (NSCs) were isolated and cultured routinely. Transwell system was used to observe the migration ability of NSCs into injured nerve cells. Immunocytochemistry was used to explore the expression of chemotactic factor receptor-4 (CXCR-4) in NSCs. In vivo, we applied immunofluorescence technique to observe the migration of NSCs into injured brain area. Immunofluorescence technique and Western blotting were used to test expression level of SDF- 1. After AMD3100 (a special chemical blocker) blocking CXCR-4, the migration ability of NSCs was tested in vivo and in vitro, ***: NSCs displayed specific tropism for injured nerve cells or traumatic brain area in vivo and in vitro. The expression level of SDF-1 in traumatic brain area increased remarkably and the expression level of CXCR-4 in the NSCs increased simultaneously. After AMD3100 blocking the expression of CXCR-4, the migration ability of NSCs decreased significantly both in vivo and in ***: SDF-1 may play a key role in stem cells migrating into injured brain area through specially combining with CXCR-4.

关键词： Stromal cell-derived factor Stem cells Chemotactic factor Traumatic brain injury

Calculation Model for Current-voltage Relation of Silicon Quantum-dots-based Nano-memory

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Semiconductor Photonics and Technology 2007年第4期13卷 247-251+271页

作者： YANG Hong-guan, DAI Da-kang, YU Biao, shang lin-lin, GUO You-hong(College of Physics and Microelectronics, Hunan University, Changsha 410082, CHN) College of Physics and Microelectronics Hunan University Changsha 410082

Based on the capacitive coupling formalism, an analytic model for calculating the drain currents of the quantum-dots floating-gate memory cell is proposed. Using this model, one can calculate numerically the drain currents of linear, saturation and subthreshold regions of the device with/without charges stored on the floating dots. The read operation process of an n-channel Si quantum-dots floating-gate nano-memory cell is discussed after calculating the drain currents versus the drain to source voltages and control gate voltages in both high and low threshold states respectively.

关键词： nanocrystal memory capacitive coupling read operation quantum dots

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明代中后期福建阳明学对“隆庆开洋”的影响

贵阳学院学报（社会科学版） 2024年第4期19卷 1-7页

作者：林晓峰张山梁福建省闽南文化研究会福建漳州363700

明代中后期,福建沿海地区出现最为重大的经济活动——月港“隆庆开洋”,而其背后的深层次文化原因,是值得深入考察的现象。思想文化的嬗变带动思想解放、制度变革、主流意识形态的建构确立,进而影响经济活动的转型升级,是考究月港“隆... 详细信息

明代中后期,福建沿海地区出现最为重大的经济活动——月港“隆庆开洋”,而其背后的深层次文化原因,是值得深入考察的现象。思想文化的嬗变带动思想解放、制度变革、主流意识形态的建构确立,进而影响经济活动的转型升级,是考究月港“隆庆开洋”的一个全新的思考路径。通过对阳明心学义利观的形成,明嘉靖、隆庆年间阳明后学的入闽履职,以及对嘉靖之季三位福建巡抚的执政理念、人文思想的钩沉爬梳等三个方面的考察,可知阳明心学为月港“隆庆开洋”提供了思想准备、社会环境与政治支持。或者说,明代中后期福建阳明学是促进月港“隆庆开洋”的一个重要因素。

关键词：阳明学义利观漳州月港隆庆开洋

芳基乙酮酸薄荷醇酯的合成及不对称Henry反应

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高等学校化学学报 2010年第1期31卷 68-73页

作者：向纪明李宝林陕西师范大学化学与材料学院药用植物资源与天然药物化学教育部重点实验室西安710062 安康学院化学化工系安康725000

以钛酸四乙酯为催化剂,芳基乙酮酸乙酯与天然L-薄荷醇进行酯交换,合成了8个含手性基团的芳基乙酮酸薄荷醇酯;在手性基团的立体选择性控制下,芳基乙酮酸薄荷醇酯与硝基甲烷进行不对称Henry反应,合成了7个(2R)-2-羟基-2-芳基-3-硝基丙酸... 详细信息

以钛酸四乙酯为催化剂,芳基乙酮酸乙酯与天然L-薄荷醇进行酯交换,合成了8个含手性基团的芳基乙酮酸薄荷醇酯;在手性基团的立体选择性控制下,芳基乙酮酸薄荷醇酯与硝基甲烷进行不对称Henry反应,合成了7个(2R)-2-羟基-2-芳基-3-硝基丙酸薄荷醇酯新化合物,用IR,1H NMR,13C NMR,MS和元素分析表征了化合物结构.用高效液相色谱经手性柱分析了不对称反应效果,缩合反应的非对映体过量在46.5%～64.2%之间,表明可以通过立体选择性控制产物构型.

关键词： α-芳基酮酸酯 L-薄荷醇酯交换不对称Henry反应

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船舶设计工程图的SVG表达

哈尔滨工程大学学报 2007年第2期28卷 123-127页

作者：李玉刚纪卓尚林焰大连理工大学船舶CAD工程中心辽宁大连116024

SVG是W3C推出的一种基于XML的网络图形标准,有必要将AutoCAD中表达的船舶设计工程图纸转换为SVG格式,使设计图可以方便地在网上发布.研究了AutoCAD图形对象和SVG图形元素的映射机制,使用NURBS曲线的节点插入算法,解决了AutoCAD中NURBS... 详细信息

SVG是W3C推出的一种基于XML的网络图形标准,有必要将AutoCAD中表达的船舶设计工程图纸转换为SVG格式,使设计图可以方便地在网上发布.研究了AutoCAD图形对象和SVG图形元素的映射机制,使用NURBS曲线的节点插入算法,解决了AutoCAD中NURBS曲线到SVG中Bezier曲线的转换问题.利用AutoCAD提供的ObjectARX技术,编程实现了AutoCAD中船舶设计图到SVG格式的精确转换.此方法可以转换船舶设计图中的各种图形对象,以及文字信息和颜色.

关键词：船舶设计工程图 SVG AutoCAD NURBS

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我国体育产业风险投资需求研究

上海体育学院学报 2006年第1期30卷 19-23页

作者：林祖明安徽财经大学体育部安徽蚌埠233041

采用文献资料、问卷调查、数理统计等研究方法,对我国体育产业风险投资需求问题进行研究。结果表明:体育产业风险投资需求严重不足是我国体育产业风险投资发展面临的根本性问题。认为:应培育体育产业风险投资需求主体,刺激体育产业风险... 详细信息

采用文献资料、问卷调查、数理统计等研究方法,对我国体育产业风险投资需求问题进行研究。结果表明:体育产业风险投资需求严重不足是我国体育产业风险投资发展面临的根本性问题。认为:应培育体育产业风险投资需求主体,刺激体育产业风险投资有效需求的增长。提出了发展我国体育产业风险投资有效需求策略模式的建议。

关键词：中国体育产业风险投资有效需求需求主体