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Zn_4O(BO_2)_6:Co^(2+)的三角场分裂
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作者 杜懋陆 马健 陈庆汉 《贵州大学学报(自然科学版)》 2004年第3期238-240,共3页
Zn4O (BO2 ) 6:Co2 +晶体是一种可能的 1 5 4 μm饱和吸收被动Q开关晶体。本文从Zn4O(BO2 ) 6 的晶体结构数据出发 ,采用平均共价因子模型 ,计算Zn4O(BO2 ) 6:Co2 +的三角场分裂。理论计算结果与实验观测值符合很好。
关键词 被动Q开关晶体 CO^2+离子 三角场分裂 Zn4O(BO2)6晶体
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三角场对红宝石光谱压力移位的影响
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作者 黄小益 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 1995年第4期336-339,共4页
本文从电子径向波函数在加压下扩展的概念出发,进下考虑三角场效应,将B、C、Dq、ζ、δ等参量表示为线性压缩比x的函数,我们对红宝石的光谱移位进行了理论计算。所得结果与实验符合很好。本文研究表明:三角场效应在谱线的压力... 本文从电子径向波函数在加压下扩展的概念出发,进下考虑三角场效应,将B、C、Dq、ζ、δ等参量表示为线性压缩比x的函数,我们对红宝石的光谱移位进行了理论计算。所得结果与实验符合很好。本文研究表明:三角场效应在谱线的压力移位中起着重要的作用。 展开更多
关键词 红宝石 三角场 压力移位 光谱移位
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AlCl_3·6H_2O晶体中Cr^(3+)离子的ESR光谱的理论研究
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作者 刘光华 周一阳 《四川师范大学学报(自然科学版)》 CAS CSCD 2004年第2期182-184,共3页
研究了AlCl3·6H2O晶体中Cr3+离子的ESR光谱.计算结果(D=-0.03264cm-1,g=1.9709和Δg=-0.00027)和实验值(D=-0.0327(1)cm-1,g=1.977(1))符合得很好.还讨论了AlCl3·6H2O晶体中杂质Cr3+离子的局部结构.
关键词 电子自旋共振 晶体场 G因子 零场分裂 三角场
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整治农贸集市 代表献计献策
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作者 颜家贵 《上海人大月刊》 1994年第1期29-29,共1页
长宁区周家桥街道代表大组根据本地区居民群众十分关心的农贸集市整治问题,专题对玉屏路集市和三角场菜场集市进行了视察。视察中代表们听取了区工商局。
关键词 集市 整治 农贸 代表 三角场 食品公司 路集 街道 视察 居民
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万千商客汇九龙——访武进市九龙小商品批发市场总经理邓筱平
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作者 小春 忆母 《苏南科技开发》 1996年第9期28-29,共2页
从古到今,常州拥有过不少独特。就名人辈出而言,常州诞生过瞿秋白、刘海粟、盛宣怀……就物产而言,常州的大麻糕、芝麻糖、梳子、笼子以及柴油机、收音机、灯芯绒、自行车,可谓名闻遐迩。可是常武地区从来没有过一家小商品批发市场,这... 从古到今,常州拥有过不少独特。就名人辈出而言,常州诞生过瞿秋白、刘海粟、盛宣怀……就物产而言,常州的大麻糕、芝麻糖、梳子、笼子以及柴油机、收音机、灯芯绒、自行车,可谓名闻遐迩。可是常武地区从来没有过一家小商品批发市场,这是历史的空白。直到1994年9月18日,常武地区终于填补了这一空白,武进市九龙小商品批发市场应运而生。前不久,笔者慕名前往,饶有兴趣地参观了这个座落在常州市区东门三角场,集交易、储运、批发、服务为一体的常武地区最大的小商品批发市场。见到的是交易场上,南来北往的人们熙熙攘攘,摩肩接踵;进进出出的车辆川流不息。 展开更多
关键词 商品批发市场 武进市 市场管理 总经理 三角场 常州市区 市场建设 灯芯绒 自行车 交易场
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FORGING ASIA′S GLOBAL TRANSPARK IN THE PEARL RIVER DELTA AT ZHUHAI
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作者 Victor F S SIT 《Chinese Geographical Science》 SCIE CSCD 2003年第4期300-309,共10页
The main purpose of the paper is to introduce the concept of the Global TransPark (GTP). It is a critical time to develop air logistics infrastructure in the New Economy. The paper also presents a brief review of the ... The main purpose of the paper is to introduce the concept of the Global TransPark (GTP). It is a critical time to develop air logistics infrastructure in the New Economy. The paper also presents a brief review of the air cargo industry in the Asian-Pacific region and China,in particular China’s development in the industry as its economy has grown rapidly and globalized in the past two decades. The paper argues that China needs to develop a GTP to support its future growth,and explains why the Pearl River Delta-Hong Kong-Macao city-region or Extended Metropolitan Region (EMR) is the best location. Finally,it proposes that Zhuhai Airport,one of the five airports in the EMR,is the best site for the GTP. New policies from Chinese government as well as close cooperation between local governments of Guangdong and the two Special Administrative Regions of Hong Kong and Macao will be needed to make the establishment of the GTP possible. 展开更多
关键词 Global TransPark AIRPORT air cargo transport Hong Kong Extended Metropolitan Region the Pearl River Delta New Economy
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Magnetic field characteristics analysis of a single assembled magnetic medium using ANSYS software 被引量:6
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作者 Ren Liuyi Zeng Shanglin Zhang Yimin 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2015年第3期479-487,共9页
The section shape of an assembled magnetic medium is the most important structural parameter of a high gradient magnetic separator, which directly affects the induction distribution and magnetic field gradient of the ... The section shape of an assembled magnetic medium is the most important structural parameter of a high gradient magnetic separator, which directly affects the induction distribution and magnetic field gradient of the magnetic separator. In this study, equilateral triangle, square, hexagonal, octagon, dodecagon, and round shape sections of the assembled magnetic medium are chosen to study their influence on magnetic field distribution characteristics using the ANSYS analysis. This paper utilizes a single assembled magnetic medium to understand the relationship between the geometry of the assembled magnetic medium and its magnetic field distribution characteristics. The results show that high magnetic field,regional field, magnetic field gradient, and magnetic force formed by the different sections of the assembled magnetic medium in the same background magnetic field reduce in turn based on the triangle,square, hexagonal, octagon, dodecagon, and round. Based on the magnetic field characteristics analytic results, the magnetic separation tests of the ilmenite are carried out. The results indicate that the section shape of the toothed plate compared with the section shape of cylinder can improve the recovery of ilmenite up to 45% in the same magnetizing current condition of 2A, which is consistent with magnetic field characteristics analysis of different assembled magnetic medium section shapes. 展开更多
关键词 Magnetic separation Magnetic medium Magnetic field character High gradient magnetic separator ANSYS
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Critical Properties of Mixed Ising Spin System with Different Trimodal Transverse Fields in the Presence of Single-Ion Anisotropy
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作者 CHEN Qiang YAN Shi-Lei 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第6期1131-1136,共6页
Within the framework of an effective field approximation, the effects of single-ion anisotropy and different trimodal transverse fields of two sublattices on the critical properties of the mixed spin-1/2 and spin-1 Is... Within the framework of an effective field approximation, the effects of single-ion anisotropy and different trimodal transverse fields of two sublattices on the critical properties of the mixed spin-1/2 and spin-1 Ising system are investigated on the simple cubic lattice. A smaller single-lon anisotropy can magnify magnetic ordering phases and a larger one can depress magnetic ordering phase for T-Ω1/2 space at low temperatures, while a smaller single-ion anisotropy can hardly change the value of critical transverse field for T-Ω1 space. On the other hand, influences of two different trimodal transverse fields concentrations on tricritical points and magnetic ordering phases take on some interesting results in T-D space. The main reason comes from the common action of single-ion anisotropy, different transverse fields and two trimodal distributions. 展开更多
关键词 critical property mixed spin system trimodal transverse field single-ion anisotropy
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三角对称稀土配合物的配位场理论分析 被引量:2
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作者 范英芳 潘大丰 杨频 《中国科学(B辑)》 CSCD 北大核心 1996年第6期567-573,共7页
解决了奇次三角场复矩阵运算的问题,基于双层点电荷配位场(DSCPCF)模型,在讨论三角场(D_3,D_(3h),D_(3d))中各种配位数的配合单元构型与DSCPCF参数表达式的基础上,建立了计算三角对称稀土配合物的配位场微扰能级的方案,计算程序化后,模... 解决了奇次三角场复矩阵运算的问题,基于双层点电荷配位场(DSCPCF)模型,在讨论三角场(D_3,D_(3h),D_(3d))中各种配位数的配合单元构型与DSCPCF参数表达式的基础上,建立了计算三角对称稀土配合物的配位场微扰能级的方案,计算程序化后,模拟了TbAl_3(BO_3)_4晶体的Stark能级,结果与实验值相当接近。 展开更多
关键词 三角场 稀土配合物 配位场 光谱
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Sale of the Crown of Beer: A Study Based on the Strategy Tripod of Mike Peng
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作者 Jose G. Vargas-Hernandez Noe Rene Luna Plascencia 《Sociology Study》 2015年第10期817-824,共8页
The main objective of this study is to analyze through tripod strategy Peng, the basics of why the acquisition and sale of Grupo Modelo (which it is the largest brewer in Mexico with the highest market share) throug... The main objective of this study is to analyze through tripod strategy Peng, the basics of why the acquisition and sale of Grupo Modelo (which it is the largest brewer in Mexico with the highest market share) through analysis of the annual reports of the company. The analysis will be supported under three main theories: theory of industry, theory of resources and capabilities, and ultimately theory of institutions. The paper concludes with a compilation and analysis of information giving rise to answer the question why 6rupo Modelo sold? And if have you had a positive result in the acquisition of Grupo Modelo by the company ABI? The answer is yes. The sale price of the shares by Grupo Modelo was very high and it received an award of 30% over the closing price of the shares of the C series in 2012. So it was a good sale regarding previous observations. 展开更多
关键词 ACQUISITIONS institutions industry strategies resources
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Measurement and Simulation of the Flow Field around a Triangular Lattice Meteorological Mast
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作者 Matthew Stickland Thomas Scanlon +2 位作者 Sylvie Fabre Andrew Oldroyd Detlef Kindler 《Journal of Energy and Power Engineering》 2013年第10期1934-1939,共6页
The international standard IEC 61400-12-1 Wind turbines--Part 12-1: Power performance measurements of electricity producing wind turbines" aims to provide a uniform methodology that will ensure consistency, accuracy... The international standard IEC 61400-12-1 Wind turbines--Part 12-1: Power performance measurements of electricity producing wind turbines" aims to provide a uniform methodology that will ensure consistency, accuracy and reproducibility in the measurement and analysis of power performance by wind turbines. Annex G of this standard provides a methodology for the appropriate arrangement of instruments on the meteorological mast to ensure accurate measurement. For cup anemometers it provides recommendations about their location relative to the mast so that the effect of mast and boom interference on their output may be minimised. These recommendations are given for both tubular masts and lattice masts. This paper compares the flow distortion predicted by the IEC standard and the results of a 3D CFD (computational fluid dynamics) simulation of a triangular lattice mast. Based on the results of wind tunnel and CFD simulation it was found that the flow distortion surrounding the lattice mast was overpredicted by the method suggested in appendix G oflEC61400-12-1. Using the CFD data it was possible to determine, for a range of flow directions and mast heights, the distance from the mast that anemometers would need to be in order to be outside the flow distortion field. 展开更多
关键词 Meteorological mast INTERFERENCE lattice tower flow distortion.
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萤火虫,夜夜红
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作者 金曾豪 《苏州杂志》 2003年第4期17-20,共4页
书场里的汽油灯丝丝作响。要开书了。跑堂在书场门口朗声喊场:"开书哉——开书哉……" 这么一喊,小镇的黄昏就开始了。半大孩子不好意思再混进书场听白书,只好去三角场那边转转,看看有没有"小热昏"摆场子。那时,三... 书场里的汽油灯丝丝作响。要开书了。跑堂在书场门口朗声喊场:"开书哉——开书哉……" 这么一喊,小镇的黄昏就开始了。半大孩子不好意思再混进书场听白书,只好去三角场那边转转,看看有没有"小热昏"摆场子。那时,三角场是练镇的中心广场。脚穿的都是木屐,在麻石街上踩出一片响亮。一群孩子在一起走,走着走着就踩成了一个节奏。 展开更多
关键词 萤火虫 故事 三角场 汽油灯 中心广场 江南 乐器 咳嗽 好处 节奏
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Construction of AFLT States for W_NH Symmetry, Analytic Continuation and Integrability on AGT Relation
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作者 刘知胜 寿暴 +2 位作者 吴剑锋 续莺莺 喻明 《Communications in Theoretical Physics》 SCIE CAS CSCD 2015年第4期487-498,共12页
We propose a Hamiltonian to the construction of the AFLT states for WNsymmetry. We generalize the AGT relation to generic(extended) conformal field theory with 1 ≤ c < ∞. We analyze the triangular structure hidde... We propose a Hamiltonian to the construction of the AFLT states for WNsymmetry. We generalize the AGT relation to generic(extended) conformal field theory with 1 ≤ c < ∞. We analyze the triangular structure hidden in the AGT relation with WNsymmetry in detail and the triangular structure implies the integrability. 展开更多
关键词 AGT relation AFLT state WNalgebra Jack polynomial
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Export Competition in China: Evidence from Data at Provincial Level
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作者 Yan Zhi Changyuan Luo 《Fudan Journal of the Humanities and Social Sciences》 2014年第4期621-638,共18页
Through an analysis of the effects of Guangdong on exports from other provinces, this paper examines China's interregional relationships regarding exports. We utilize provincial level data from 1998 to 2008 and apply... Through an analysis of the effects of Guangdong on exports from other provinces, this paper examines China's interregional relationships regarding exports. We utilize provincial level data from 1998 to 2008 and apply the system GMM to estimate an empirical model derived from the gravity equation. The results indicate that Guangdong significantly crowds out exports from other provinces. Coastal provinces are less affected than their non-coastal counterparts. In coastal areas, the displacement effect on the Yangtze River Delta is less than that on the Pan Bohai Rim. Further research reveals that the improvements in service industries, labor productivity, capital-labor ratio, and agglomeration of manufacturing industries have significantly reduced export competition. Additionally, a province with a larger market potential or a lower degree of market disintegration is less affected by Guangdong's export competition. 展开更多
关键词 Export competition Industry agglomeration Market potential Market disintegration
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Transition and Transplantation in China's Local Development: The Case of the Yangtze River Delta Region
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作者 Wang Zhi-kai 《Fudan Journal of the Humanities and Social Sciences》 2010年第3期70-90,共21页
In the past nearly 30 years, the emergence of the market economies in China was characterised by geographical concentration of economic activities. The particularly successful cases happened in the Yangtze River Delta... In the past nearly 30 years, the emergence of the market economies in China was characterised by geographical concentration of economic activities. The particularly successful cases happened in the Yangtze River Delta, namely, the two most famous models for local developments in China's economic transformation and market development: the " South Jiangsu Model" in south Jiangsu and the "Wenzhou model" in southeast Zhejiang. Although there have been debates upon the two development models for a considerably long time, both models keep being open in and compatible to local development and globalization. The two models influence each other, keep being in institutional transition through bilateral paths transplantation, i.e. learning from each other and employing cooperation in their developments. Transition and transplantation are adaptation mechanisms for local developments of the two models to participate in global economies with industrial division and labour division, and also for the two models to continuously further contribute to China's nationwide market transition and economic development. 展开更多
关键词 TRANSITION TRANSPLANTATION "South Jiangsu Model" "WenzhouModel" local development
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