一种基于蚁群算法的震区环境监测系统设计

针对目前震区生态恢复、环境保护监测的需要,论文提出了一种基于蚁群算法的震区监测系统,利用智能无线传感器网络对光强、温度、湿度等生态环境变量进行监测的方法.该方法解决了传统监测方法中布线复杂、精度有限、能耗高等问题,具有数据采集量大,精度高、低功耗和可靠性高等优点.     

AVO流体反演技术在低孔渗砂岩气藏预测中的应用

西湖凹陷A构造的砂岩气藏,主要埋藏于3000m以下的深层,且发育于浅水沉积环境,储层物性较致密,厚度横向变化大,导致储层的AVO响应复杂,常规AVO分析难以对储层流体进行有效识别。研究了AVO流体反演技术在该构造含气储层预测中的应用。该技术在对储层以及非储层速度、密度、厚度等关键参数的统计分析的基础上,利用Monte－Carlo随机模型建立、地震正演模拟、流体替换等技术,获得储层在不同流体下AVO响应的验前概率;然后利用Bayes理论,估算实际地震数据AVO响应指示储层含某种流体的可能性一验后概率,从而实现储层流体的预测。实际钻探结果证实了该方法的有效性。     

不同投资主体建设项目工程造价管理的探讨

针对社会主义市场经济体制下，投资渠道多样化，投资主体多元化情况，论述了对不同投资主体建设项目，实行不同的工程造价确定与控制的方法，从而实现全社会固定资产投资的良性循环和全过程工程造价管理的健康发展。     

济钢1 750 m3高炉薄壁炉衬操作技术

济钢1750m^3高炉采用砖壁合一的薄壁内衬结构。针对薄壁内衬高炉的技术特点，通过采取加强原燃料质量管理、重视上下部调剂、优化布料矩阵、控制合理的煤气流分布、完善冷却体系管理、控制合理操作炉型、狠抓设备点检等措施，高炉各项技术指标明显改善。     

Non-line-of-sight ultraviolet single-scatter path loss model

A novel non-line-of-sight ultraviolet single-scatter path loss model for coplanar geometries is proposed on the basis of spherical coordinate system. In comparison with the classical single-scatter analytical model based on the prolate-spheroidal coordinate system, it is of a simple integral form which only depends on the variables of the zenith and receiver elevation angles. Additionally, analytical approximation for the proposed single-scatter path loss model is presented. Numerical examples on path loss are presented for various system geometries. Correspondingly, the results are verified with the classical single-scatter analytical model, which demonstrates the validity of our path loss model and the reasonability of the analytical approximation.     

Fluidity improvement of semiaromatic polyamides: Modification with oligomers

Poly(decamethylene terephthalamide) PA10T with different relative viscosities (RV) were successfully produced by the reaction of 1,10‐decanediamine and terephthalic acid through molecular weight regulator benzoic acid (BA). RV was shown to be decreased linearly with increasing BA concentrations and detailed structures of PA10Ts were characterized by ¹³C‐NMR. Fluidity of PA10T with varying molecular weight was tested and low RV PA10Ts were used as modifiers to improve fluidity behaviors of high RV PA10Ts, meanwhile mechanical properties were maintained. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40058.     

高分子材料学辅助有机化学教学——培养与增进学生学习的浓厚兴趣

摘有机化学是面向工科专业开设的一门基础课程,因授课教师的知识背景不同,所以在教学过程中应因地适宜考虑教学方案,提高教学质量。文章根据作者在有机化学授课上的教学实践与经验,浅议高分子材料学在有机化学教学中提高学生兴趣与课堂效率的作用。     

Itaconic Acid Based Surfactants: I. Synthesis and Characterization of Sodium <Emphasis Type="Italic">n</Emphasis>-Octyl Sulfoitaconate Diester Anionic Surfactant

A novel itaconate-based surfactant, namely sodium n-octyl sulfoitaconate diester (SOSID), has been synthesized from itaconic acid (IA) and n-octanol by sulfonation and esterification reaction processes. The effects of reaction temperature, reaction time, molar ratios of n-octanol to IA and the catalyst dosage on the esterification were investigated. The chemical structure of the surfactants SOSID was characterized by means of LC–MS and confirmed by FT-IR and ¹H NMR spectroscopy. The surface tension γ and the critical micelle concentration (CMC) were determined as 25.02 mN/m and 4.0 × 10^?4 mol/L by using surface tensiometer at 20 °C. Further investigations showed that SOSID possess excellent wetting, emulsifying and lime soap dispersing properties.     

苏皖沉积型坡缕石酸溶动力学研究

从坡缕石提纯入手,用分光光度法进行元素分析,对坡缕石的酸溶动力学进行研究。实验结果表明：坡缕石酸溶反应中八面体阳离子溶出率取决于阳离子在矿物中的含量、酸溶反应本身活化能和离子扩散速度。其酸溶动力学宜采用圆柱体一内扩散控制模型模拟,其浸出率x对反应时间t的关系可表示为(1-x) xlnx=kt。在实验条件下坡缕石八面体阳离子Fe^3 ,Al^3 和Mg^2 酸溶反应表观活化能分别为11．4,9．5kJ／mol和16．6kJ／mol。     

生物柴油/甲醇混合燃料对柴油机性能与排放的影响研究

在一台4缸直喷式柴油机上研究了超低硫柴油、生物柴油及后者与甲醇的混合燃料对发动机性能、气体及微粒排放的影响。生物柴油由餐饮废油制取,除单独使用外和甲醇按体积比90：10和80：20混合后使用。在最大扭矩转速1800 r.m in-1时,在5个不同负荷下,比较了不同燃料热效率及CO、HC、NOx以及微粒质量浓度,微粒的总数量及平均几何粒径。结果表明,和超低硫柴油相比,生物柴油及其和甲醇的混合燃料的热效率增加,NOx和微粒质量、数量浓度的排放降低,但HC、CO和NO2排放升高;同时,随着甲醇混合比例的增加,HC、CO和NO2的排放成比例增加,微粒的质量浓度及数量浓度进一步降低,热效率及NOx几乎保持不变。