The electrical conductance of the gold / polymer composite films was tunable , and a low resistivity of the order of 10 ~ ( - 4 ) cm was yield . the conducting mechanism was not determined , perhaps the tunnel effect and the foreign - substance - electron - transfer should be considered 聚合物金纳米粒子复合薄膜的电阻率可调，电阻率最低可达10 ~ ( - 4 ) ? cm量级，导电机制可能与隧道效应及杂质离子导电有关。
The nanometer particles are metastable materials that lie between macroscopical materials and atoms or molecules with the characteristics of little size effect , quantum measurement effect , surface effect and macroscopical quantum tunnel effect , etc . , thus demonstrating some special properties 纳米粒子是介于宏观物质与微观原子或分子之间的过渡亚稳态物质，具有小尺寸效应、量子尺寸效应、表面效应与宏观量子隧道效应等，从而表现出一些特殊的性质。
Nanoscience have been drawn considerable interest and physicaly investigated all over the world . the nanoparticles have different properties compared with bulk materials such as quantum size effect , surface effect , the dieletric confinement etc . the intrinsic optical properties of nanoparticles have been thoroughly studied 纳米材料科学是一门涉及多学科领域的科学，纳米颗粒由于尺寸小能产生量子尺寸效应，表面效应，介电限域效应和宏观量子隧道效应等。
Owing to the extremely small dimensions , nanometer materials are structurally characterized by a large volume fraction of grain boundaries or interphase boundaries , which exhibit some unique structural characteristics and novel properties with respect to the conventional coarsegrained polycrystalline materials 由于纳米粉体材料尺度极小，使之表面原子数、表面能急剧增加，产生了宏观物体所不具有的表面效应、小尺寸效应、量子效应及宏观量子隧道效应等新的性能。
So the conductive behavior in ac field was equivalent with the parallel connection of a resistor and a capacitor , the nonlinearity of v - i characteristics originate from a combination of the implication of the nonlinear contribution of tunnel conduction between graphite particles and the production of additional conducting pathways under sufficiently strong local fields , which is the function of the gap between graphite particles and has a relation with the transition ability of electrons 导电沥青混凝土的导电行为则可用隧道效应进行分析，交变电场中的导电行为可等效为电阻r和电容c并联，非线性v - i特性产生于隧道效应时粒子间的非线性导电和高电场时诱发额外的导电通路，二者是粒子间隙的函数，与电子跃迁能力有关。
It is shown that the results calculated using the ccdwa are agreement with one of the accurate quantum mechanics employing the same potential . quantum mechanical tunneling is important in near threshold , and classical trajectory calculation is not good for prediction of the cross sections . the reaction cross sections calculated using different potentials is different , which show that the investigation of reaction cross section can provide evidence for test of accuracy of the potential energy surface 研究发现：势能面相同时用ccdwa方法计算的截面和公认精确的量子力学结果比较符合；阈能附近的量子力学隧道效应较为显著，准经典弹道方法不能很好的预言其截面；用不同势能面计算的反应截面有差别，说明反应截面的研究能为检验势能面的准确性提供依据。
Moreover , the density of nano - hexa - ferrites was reduced , so they are very easily to be applied . the purpose of this paper is to synthesize nano - hexa - ferrites . comparision with normal materials , nano - materials have special performance because of their special surface effect , volume effect , and quantum effect 纳米粒子由于具有特殊的表面效应、体积效应、量子隧道效应，表现出与常规材料不同的物理化学性质，对纳米吸波材料而言，其具有极好的吸波特性，同时具备吸波频带宽、兼容性好、质量轻和厚度薄等特点。
Due to the important influence of corporate governance on corporate financial behaviors and from an angle of corporate governance , we develop six hypotheses based on overseas and home relevant researches and data of chinese listed companies from 1999 to 2003 , and do hypotheses testes with regression models to examine the impact of share percent of top 5 shareholders and supervision and balance mechanism among bloekholders on cash dividend distribution of listed companies , and to explore influence and balance mechanisms in tunneling of cash dividend which derived from the special phenomena of " same shares same fights but different price " 摘要鉴于公司的财务行为受到公司治理因素的影响，本文从公司治理的角度，基于国内外的相关研究提出六个研究假设，然后构建回归模型，依据1999年2003年中国上市公司数据进行假设检验，具体探讨前五大股东持股比例以及在此基础上大股东之间的监督制衡机制对于上市公司派发现金股利的影响，研究因为我国股市“同股同权不同价”的特殊现象而导致的现金股利的“隧道效应” ，探索其中的影响机制和制衡机制。
This paper analyses the cause of producing reunite in nano - powder from four facets , such as quanta size effect , small size effect , surface effect and macroscopical quanta size effect , and countermeasures are suggested from three facets , such as preparation , storage and transport as well as use , both in theory and experiment 摘要根据作者理论和试验方面的探索，从量子尺寸效应、小尺寸效应、表面效应及宏观量子隧道效应等方面分析了纳米粉体材料产生团聚的原因，并从制备、储运、使用等方面提出了具体解决纳米粉体材料团聚的措施。
Underlain by these models and theories , a crawling algorithm based on " tunneling " and bayes classification is explored and a mathematical function model of tunneling distance for this algorithm is established , and moreover the practical procedure of this crawling algorithm is discussed 在这些研究的基础上，本文探索了一种基于隧道效应和贝叶斯分类途径的特定主题爬取算法，并建立了这种爬取算法的穿越距离函数模型，同时分析了这种算法在爬取中的具体实现过程。
