Fluorescence properties and application of doping complexes Eu_(l-x)L_x(TTA)_3Phen as light conversion agents

Light conversion agents Eul-xLx（TTA）3Phen (L denotes (La3+, Gd3+, Y3+)) complexes were prepared, and the influence of doping ions on fluorescence properties was investigated by elementary analysis, FTIR and fluorescent spectra. The results show that FTIR spectra of Eul-xLx（TTA）3Phen complex system are identical with that of EuTTA3Phen, which indicates that the complexes (Eul-xLx（TTA）3Phen) are similar in structure to （Eu （TTA）3Phen.） For the above doping elements, co-fluorescence enhancement has the following order: Gd3+>Y3+>La3+, and the optimum mole fractions of doping elements are 0.4, 0.2 and 0.5 respectively for Gd3+, Y3+, La3+. Among all the complexes, Eu0.6Gd0.4（TTA）3Phen complex has the strongest fluorescent intensity. Applying Eu0.6Gd0.4（TTA）3Phen complex to plastic and printing inks, bright red fluorescence plastic and printing inks are obtained when the content of europium reaches 0.1%（mass fraction）.

Effects of complexing agents on acidic electroless nickel deposition

Our previous study reported the influences of different complexing agents on electroless nickel （EN） by examining the properties of the deposits. In the present work, the effects of four common-used complexing agents on EN deposition rate and the stability of solution pH values were examined, either with an acetic pH buffer agent or absent of them. It is indicated that the pH buffeting effect of them is dominative when the EN solution is lack of the pH buffer. Under this situation, the EN deposition rate increases with the concentration of complexing agents increasing. The EN deposition rate decreases with fin＇ther adding the complexing agent when the solution already has enough pH buffer capability. Electrochemical impedance spectroscopy obtained during EN deposition illustrates that, in this case, the enhanced reaction resistance is the main reason for a lower deposition rate. However, the influence of polarization caused by mass transfer is not negligible at high complex ratio for sodium citrate and malic acid EN solutions.

Electrochemical behaviors of gold and its associated elements in various complex agent solutions

Thermodynamic properties and electrochemical behaviors of gold and its associated elements, such as silver, copper, nickel and iron, in various complex agent solutions were studied. Within CS（NH2）2, S2O2-3 and SCN- systems, alkaline thiourea is the optimal nontoxic lixiviating agent substituting cyanide from the viewpoint of thermodynamics. The electrochemical study indicates that the anodic dissolution current densities of gold are 2.616, （1.805,） 1.267, 1.088, 0.556, and 0.145 mA·cm-2 respectively in the solutions of cyanide, alkaline thiourea containing Na2SiO3, SCN-, acidic thiourea, alkaline thiourea and thiosulfate at the potential of 0.500 V. Comparing various lixiviating agents, the alkaline thiourea solution containing Na2SiO3 is of prominent selectivity in leaching gold, in the potential range from 0.500 to 0.600 V, which is most efficient for leaching gold selectively instead of cyanide. The effect on leaching gold is similar to that in the cyanide system.

基于多Agent的服装可持续消费行为建模与仿真

“双碳”目标下,随着服装消费引起的气候变化和环境污染等生态问题日益严重,迫切需要重新思考和重塑服装消费模式,推动服装消费向质量型、低碳化转变,从而实现服装产业的绿色转型。文章运用多Agent建模方法,构建服装可持续消费行为仿真模型,采用Netlogo平台进行仿真实验,探求服装可持续消费行为的影响机理。结果表明,消费者可持续消费认知、产品可持续性和设施供应条件均显著促进可持续消费行为;但不同强度下,产品可持续性和设施供应条件的推动作用存在差异。基于此,从可持续消费认知和供应条件两方面提出了引导中国消费者服装可持续消费行为的建议和对策。

Structure, properties and application to water-soluble coatings of complex antimicrobial agent Ag-carboxymethyl chitosan-thiabendazole

The structure, properties and application to water-soluble coatings of a new complex antimicrobial agent Ag-carboxylmethyl citosan-thiabendazole （Ag-CMCTS-TBZ） prepared from different materiel ratios were reported. The silver ions were preferably coordinated with the free-NH2 groups and the -OH groups of secondary alcohol and carboxyl in CMCTS. TBZ preferably bonded to carboxyl group in CMCTS by electrostatic force and hydrogen bonding. Increase in silver ions content in the complex agent improved to some limited extent the antibacterial activity, but enhanced coloring and cost of the complex agent. Increase in TBZ content resulted in increase of antifungal activity, but decrease of water solubility of the complex agent. The antimicrobial MICs of the complex agent to Esherichia coil, Staphylococcus aureus, Candida albicans, Aspergillus niger, Mucor sp. were 20 -80, 15 -60, 20 - 55, 40 - 250, and 400 - 1700 mg/kg, respectively. Addition of 0.1% of this complex agent to acrylic emulsion paint made the paint without substantial change in color, luster, viscosity, odor or pH value, but with an excellent and chronically persisting broad-spectra antimicrobial activity.

Structure and Shape Control of Hydrothermally Synthesized PbTiO_3 --Effects of pH and Complexing Agents

Tabular PE PbTiO 3, spherical PY PbTiO 3, and acicular PX PbTiO 3 powders were hydrothermally synthesized from triethanolamine(TEA) complexed precursor; clubbed PE PbTiO 3 powders were obtained from diethanolamine(DEA) complexed precursor. The effects of pH of the hydrolyzation as well as complexing agents including TEA, DEA, and MEA(monoethanolamine) on the structure and the morphology of PbTiO 3 powders are discussed. The optimal conditions for hydrothermal syntheses of acicular and clubbed PbTiO 3 powders have been established. The products were characterized by means of XRD, TEM and other techniques.

Application study on complex wetting agent for dust-proof after gas drainage by outburst seams in coal mines

After gas drainage, the outburst seam is dry and, consequently, during subsequent mechanized mining, unwanted dust production is extensive. Because the hard dustfall typically has a small particle size it contains a high percentage of respirable dust. Considering these factors, this paper improved the efficiency of dustfall by reducing the surface tension of the liquid used as a wetting agent, then configuring five kinds of wetting agents by adopting various doses and types of surfactants, neutral inorganic salts and chemical additives, etc. After purchasing DA-85 and SRJ-1 wetting agent, the surface tension and critical micelle concentration of seven kinds of wetting agents were measured using the capillary rise method. Wetting agent A was confirmed to have the best comprehensive effect. The experiments were optimized by measuring and comparatively analyzing contact angles of pure water, SRJ-1 wetting agent and wetting agent A on the surface of different coal samples using a contact angle measurement instrument （HARKE- SPCA）. By comparative analysis, dust-proof effects of seam, dynamic pressure water infusion and high- pressure spray in the tunneling face at the Daning coal mine using pure water, wetting agent SRJ-1 and A, it was determined that after using wetting agent A, the average dust concentration in the place of the mining machine driver, 10 m and 110 m away from the tunneling front is approximately 300 rag/ m^3, 240 mg/m^3 and 100 mg/m^3, respectively, This practice increased the dust-proof efficiency dramati- cally and achieved a good comprehensive dust-proof effect.

Effect of Complex Agents on Structure and Activity of Fe-Substituted Rare Earth Hexaaluminate Catalysts for Methane Combustion

A series of catalysts were prepared by using complex sol-gel methods.Experimental results confirm the effect of different agents on structure and activity of Fe-substituted rare earth hexaaluminate catalyst (LaFeAl11 O19 ) for methane combustion.The catalyst is yielded by complex sol-gel, respectively using three different complex agents (maltose, glucose and citric acid).XRD demonstrated that haxaaluminate is the major phase of catalyst prepared by maltose,while LaAlO3 is the major one of the catalyst by glucose and citric acid.At the same time, there is a little LaFeO3 and surface areas as well as 29.5 nm particle diameter when the complex agent is maltose.However, T10 ( temperature for 10% conversion of methane) and T100 ( temperature for 100% conversion of methane) for catalyst by glucose is 543 and 758 ℃, which is the best among the three complex agents for methane combustion.

Spectrofluorometric Study of the Inclusion Complexation of Fluorescent Whitening Agents and β-Cyclodextrins

The inclusion complexation behavior of 2,5-Bis(5-tert-butyl-benzoxazol-2yl)-thiophene (UVOB) with native β-cyclodextrin (βCD) and βCD-monochlorotriazinyl (βCD-MCT) was evaluated by fluorescence spectroscopy. The association constant (Ks), stoichiometry, , and were evaluated at 25℃ ± 0.1℃ in phosphate buffer solution (pH = 10.5, 0.1 mo•dm–3) in order to find out the complex formation ability and stability. Fluorescence enhancement for UVOB and UVBNB with both CDs has been observed as a result of the complex formation. A stoichiometry 1:1 for UVOB in both CDs was observed;a stoichiometry 3:1 for UVBNB in both CDs has been observed. The Ksvalues for UVOB were 4916 ± 137 M–1 and 655 ± 19 M–1 (acetone: water 90/10, v/v) with βCD and βCD-MCT, respectively. The value obtained indicates a spontaneous and stable complex formation, but the complex βCD-UVOB showed high Ks value as an indicative of a high concentration of complex formed. Additionally, Ks and thermodynamic parameters and were evaluated in a commercial product UVBNB (UVOB, 13%, v/v). In aqueous solution, the values obtained were 2552 ± 115 and 1787 ± 75 M–1 respectively. Complexation of UVOB with CDs is an interesting approach for utilization of UVOB in aqueous systems without the need of solvents and or surfactants used in commercial product (UVBNB).

Next Generation Flotation Agents for the Concen-Tration of Complex Copper-Lead Ores

Next generation flotation agents of KSK series for the concentration of complex copper-lead ores and the new ferromagnetic nanosized depressor of galena are introduced in this work. The feature of the KSK flotation agents is that they exhibit both frother and collector properties. KSK-6 can successfully substitute the widely used in Kazakhstani industry reagent T-80 at the reduced consumption of butyl xanthate by 30%. The new ferromagnetic nanosized depressor of galena, besides a low consumption rate of 100 g/t, also makes possible to exclude sodium sulfite （3-4 kg/t） and ferrous sulfate （5-6 kg/t） from the separation process, and receive high metal grade concentrates.

Discrete decision model and multi-agent simulation of the Liang Zong two-chain hierarchical organization in a complex project

Different from the organization structure of complex projects in Western countries, the Liang Zong hierarchical organization structure of complex projects in China has two different chains, the chief-engineer chain and the general-director chain,to handle the trade-off between technical and management decisions. However, previous works on organization search have mainly focused on the single-chain hierarchical organization in which all decisions are regarded as homogeneous. The heterogeneity and the interdependency between technical decisions and management decisions have been neglected. A two-chain hierarchical organization structure mapped from a real complex project is constructed. Then, a discrete decision model for a Liang Zong two-chain hierarchical organization in an NK model framework is proposed. This model proves that this kind of organization structure can reduce the search space by a large amount and that the search process should reach a final stable state more quickly. For a more complicated decision mechanism, a multi-agent simulation based on the above NK model is used to explore the effect of the two-chain organization structure on the speed, stability, and performance of the search process. The results provide three insights into how, compared with the single-chain hierarchical organization, the two-chain organization can improve the search process: it can reduce the number of iterations efficiently; the search is more stable because the search space is a smoother hill-like fitness landscape; in general, the search performance can be improved.However, when the organization structure is very complicated, the performance of a two-chain organization is inferior to that of a single-chain organization. These findings about the efficiency of the unique Chinese-style organization structure can be used to guide organization design for complex projects.

多Agent系统研究综述

论述了Agent及MAS的有关理论、方法和技术,主要介绍了MAS的特征、体系结构、类型以及协商、规划、学习的基本理论和研究现状。还对MAS的技术实现工具和研究应用领域进行了简单的介绍。

基于Agent的建模与仿真概述

基于Agent的建模与仿真(ABMS)是研究复杂系统的有效途径和建模仿真方法学,是当前最具有活力、有所突破的仿真方法学,已经成为系统仿真领域的一个新的研究方向。全面总结和阐述了基于Agent的建模与仿真的相关理论基础和概念,包括CAS理论,ABMS中Agent的概念、结构;阐述了ABMS的原理(简单规则导致复杂的行为)与研究步骤;总结了ABMS的主要应用领域,包括经济领域、社会科学领域和军事领域;概述了ABMS软件开发平台和工具包,给出了ABMS开发方法;给出了互联网上关于ABMS的的资源链接。因而有利于全面认识、应用和研究ABMS。

复杂适应系统及基于Agent的建模与仿真方法

论述了复杂系统中复杂性的表现形式、处理方法,并从认识论和方法论的角度来讨论复杂性,认为复杂性是客观世界的本质属性,必须用反还原论(整体论)的方法来研究复杂性问题。给出了复杂系统的一个描述性定义,指出计算机仿真是研究复杂系统的有效手段;然后介绍了霍兰教授提出的复杂适应系统(CAS)理论,并分析、阐述了CAS的研究方法棗基于Agent的建模仿真方法学及其应用情况,对基于Agent的建模方法进行了比较深刻的论述。最后介绍了当前的研究工作,并展望了将来的研究内容。

基于Agent的复杂系统建模仿真方法研究进展

由于传统建模方法难于适应复杂系统规模大、结构和层次复杂以及非线性等特点,需要采用新的建模理论和方法.基于Agent的复杂模型构建技术是目前最具活力的方法之一.首先简要介绍了Agent的基本概念及其一般结构,并讨论了基于Agent建模仿真方法的基本思路与特点;然后,综述了基于Agent复杂模型构建技术的研究现状;最后,指出了该建模仿真方法的主要发展趋势.

面向涌现的多Agent系统研究及其进展

在多Agent系统研究领域,涌现现象越来越引起人们的注意.面向涌现的多Agent系统研究正成为多Agent系统研究中值得注意的一个新方向.它关注的是多Agent系统宏观层面的涌现性问题以及系统涌现的宏观与微观层面的联系机制,并最终希望发展出一套面向涌现的多Agent系统的设计和控制方法.该文在介绍涌现的概念和特征之后,考察了多Agent系统宏观特征的面向涌现描述方法;然后对多Agent系统涌现的微-宏观机制进行了总结,比较分析了面向涌现的多Agent系统设计方法和设计模式;最后分析讨论了该领域研究存在的问题和进一步的研究方向.

战争系统基于Agent建模若干问题的讨论

在笔者前期研究工作的基础上,对战争系统Agent建模的若干问题———与传统建模方法的区别、建模理论、实体与Agent、仿真平台相关问题等进行了深入的讨论。研究表明,基于Agent的建模方法在某种程度上优于传统的基于解析公式的建模方法,为战争模拟所面临的典型复杂问题———战争问题分解、战争问题求解、模型颗粒度问题、聚合与解聚问题、实体能力问题和损耗模型问题等的解决提供了新思路和启迪,其将有望成为战争复杂系统建模仿真的突破口。

基于Agent的维修保障仿真系统设计与实现

基于Agent建模与仿真的方法是研究复杂系统和体系领域问题的有效方法,针对该方法在表述各Agent实体关联关系方面的不足,提出以Agent仿真方法为主并用复杂网络理论辅助描述各Agent实体的连接关系,结合部队装备保障运行的实际情况,重点以大修工艺、中修工艺、小修工艺和检修工艺等典型维修保障活动流程为基础,构建了装备保障体系维修保障仿真系统模型。实践证明,采用以Agent方法为主并辅以复杂网络理论的方法对于研究装备保障体系维修保障活动具备可行性和有效性。

基于Agent建模的应用:研究综述

梳理了基于Agent建模的方法在宏观经济问题、微观企业管理问题研究中的应用,评析了其优点和不足,并对未来的研究方向进行了展望。

基于Agent的建模与仿真概念化框架

基于Agent的建模与仿真(ABMS)是面向复杂系统的建模与仿真方法学。提出了基于Agent的建模与仿真概念化框架,重点对该框架中Agent模型的概念及模型转化、ABMS综合环境以及模型校核与验证等相关研究内容进行了阐述。结合该框架,对Agent、消息、复杂系统及基于Agent的仿真进行了形式化描述。最后,提出了一个基于Agent的建模与分布式仿真软件框架,介绍了该框架的主要组成部件,并对实现该框架的相关技术以及正在开展的工作进行了介绍。