1.Fluorescence excitation-emission matrix spectroscopy(EEMS) was employed to characterize the dissolved organic matter(DOM) in algal bloom seawater of Jiaozhou Bay in February,2004.The relationships of DOM fluorescence characteristics with phytoplankton multiplication,dissolved organic carbon(DOC),salinity,dissolved oxygen and pH were discussed. In addition,the protein-like and humic-like fluorescence changes fore and aft cross-flow ultrafiltration(CFF) were primarily evaluated.
利用荧光激发-发射矩阵光谱(Excitation-Emission Matrix Spectroscopy,EEMS)技术研究了胶州湾2004-02赤潮暴发期间水体中溶解有机物类蛋白和类腐殖质荧光特性,探讨了各种荧光性质与浮游植物增殖、溶解有机碳、盐度、溶解氧和pH的关系,并对切向超滤前后类蛋白和类腐殖质荧光的变化进行了初步评估.
2.The result shows that the average energy of hydrological excitation in Chandler wobble frequency band is relatively smaller and can explain only about 10% of observed excitation. However, the combination of hydrological excitation with atmospheric excitation can evidently increase the squared coherence between observed excitation and combined excitation, and raise the confident threshold of the coherence analysis.
结果表明,虽然水文激发在钱德勒频带上的激发能量很小,只能解释观测激发的平均能量约10%,但是在大气激发的基础上增加水文变化的激发作用,显著提高了与观测激发的相干系数和置信度水平.
3.The mutual excitation between the local stimuli satisfying the rules of curve distribution (position and orientation continuity) called curve self-excitation is a useful method to discover and enhance curves and to inhibit noise.The present approaches used parallel connection structure division which did not acquire satifactory effect.This paper presents the idea of random time division and dynamic self-excitation,for different curves performing random time-division searches,time coincidence filtering,and self excitation accumulation.The principle is given.
利用空间分布满足曲线规则(位置和定向连续性)的局部刺激之间的相互激励，称为曲线自激，这是发现视觉边界曲线和抑制局部噪声的有效手段.过去的工作均采用并行结构区分的计算方式，曲线自激并没有达到满意的效果.本文提出随机时分动态自激的计算方案，对不同的曲线实施随机时分的搜索、时间一致性滤波、和自激积累等机制.本文给出了实现的原理方案.
4.The excitation spectrum is broad band and the main peak is at 360 nm. Moreover, excitation peaks at 400, 422 and 472 nm were found in the excitation spectrum, which shows that this phosphor can be ex- cited by ultra-violet ray visible light. The emission spectrum shows that Gd2O2S:Eu, Mg, Ti has narrow emission peaks.
激发和发射光谱测试结果表明:Gd2O2S: Eu,Mg,Ti的激发光谱呈带状,主峰位于360 nm,另外在400,422,472 nm等处也有激发峰存在,表明该材料既可以用紫外线,也可以用可见光激发。
5.Abstract: Polyphenylacetylenes were synthesized by ［Rn(nbd)Cl］2 and WCl6/Ph4Sn catalyst systems in N2 at room temperature.Polymers with high yield and high molecular weight were obtained.Their structures were characterized by UV,IR,NMR and GPC,respectively.The fluorescence of the polymer solution with different concentration was investigated using variable excitation wavelength from UV to visible region.The relation between fluorescence and polymer structure was studied.The results showed that the molecular chain structure has great influence on fluorescence of the polymers.The emitting peak wavelength of fluorescence for the polymer of high stereoregularity is independent of solution concentration and excitation wavelength.The emitting peak wavelength of fluorescence for the polymer with disordered molecular chain arrangement varies with changing the solution concentration and excitation wavelength,and different emission sites in molecular chains and low emitting yield are shown.The measurement and analysis of fluorescence spectroscopy of polyphenylacetylenes may provide some useful information to judge the molecular chain arrangement in some conjugated polymers.
文摘:使用有机金属铑、金属钨/四苯基锡催化剂体系聚合苯乙炔，分别获得了高产率和高分子量的聚苯乙炔.使用UV，IR，NMR，GPC等分别对聚合物结构进行了表征.采用不同波长的激发光对聚合物荧光性能进行研究，详细分析了聚合物结构与荧光性能之间的关系.研究结果发现，不同聚合物结构对聚合物荧光性能产生很大影响，规整性高的聚合物，将有较高的发光量子效率；聚合物规整性差，将可能导致多个荧光发光结构点，其荧光强度降低.聚合物荧光光谱研究将对某些共轭聚合物结构的规整性分析提供一些有用的信息.
6.In view of the inadequacies of previous studies of synchronous generator loss-of-excitation transients, based on analyzing the causes of loss-of-excitation and the transient behaviours of different rectifying circuits, a more precise mathematical modcl for simulating faults in pilot exciter and mair excitation system, hence the mathematical model of turbogenerator set together with the corresponding machine-network interface and network model are proposed in this paper.
本文针对前人工作中的不足,在分析失磁故障的各种原因以及整流电路过渡过程的基础上,提出了模拟副励磁机故障和主励磁系统故障的数学模型,从而建立了较细致的描述同步发电机失磁暂态过程的数学模型以及相应的网络模型和机网接口模型。
7.A renovation project for the switch-type microcomputer-based excitation of the hydraulic generator with DC exciter is put forward.Taking the engineering application for example,the working principle,the function and characteristics of the switch-type microcomputer-based excitation adjustor are introduced,and several points for attention during the design and application of the switch-type microcomputer-based excitation adjustor are summed up according to the actual situation of engineering.
提出了带直流励磁机发电机机组开关式微机励磁改造方案,以工程应用为实例,介绍了开关式微机励磁装置的工作原理、功能特点,并根据工程实践情况总结了开关式微机励磁装置设计和应用时一些注意事项。
8.Abstract: The article analyze the troubles caused by worse excitation system in the runing of synchronous motor,point out the necessity that replacing the old excitation system with the advanced LZK of intelligence excitation system.
文摘:本文详细分析了同步电动机运行中因励磁装置技术性能不完善而出现的问题,对比提出了用先进的LZK智能型励磁装置取而代之的必要性。
9.Therefore, the stable operational region of generators is discussed along with the analysis on relationship between under-excitation operation and loss of excitation/synchronism, end temperature rise of stator-core,and automatic excitation regulators etc.
针对这种情况，对发电机稳定运行区域进行了探讨，并对进相运行与失磁失步、进相运行与定子铁心端部过热、进相运行与自动励磁调节器等关系作了分析。
10.Constructing a perfect Game Model by distinguishing responsibility excitation agreement and optimum excitation agreement, this dissertation explains how a client’s moral risk destroys optimum excitation. In system design level, it provides a theory criterion on further reforming of Public Administration Organization.
并通过对尽责激励合约和最优激励合约制度界区的划分，构造出一个完美信息博弈模型，解释公共管理部门委托人的道德风险如何破坏最优激励机制的激励功能，为公共管理部门深化改革在机制设计上提供一种理论准则。
