DEWATERING OF HAMBURG'S DREDGED MATERIAL BY ELECTROACOUSTIC DEWATERING

Separation of liquids from a fine particle suspension plays an important role in many industrial processes. In the last few years, a number of technologies have been developed for the separation of slurries with coarse particle suspensions and intermediate particle sizes. However, separation of fine particles from these suspensions can be difficult and prohibitively costly. Battelle has developed a solid-liquid separation technology that utilizes difference in electrokinetic/acoustic properties to enhance the conventional solid-liquid separation techniques such as vacuum filters and presses. The present paper describes the application of this electroacoustic dewatering technology to Hamburg dredged material.     

赤霞珠、蛇龙珠和玫瑰香葡萄酒芳香性成分的差异性研究

芳香类物质种类及含量的差异是决定葡萄酒风味的重要因素。本文对赤霞珠、蛇龙珠和玫瑰香葡萄酒的芳香性成分进行探讨分析。结果表明,3种葡萄酒中3-甲基-1-丁醇的含量最高,相对含量分别为20.61%、21.00%和15.54%;次之为丁二酸单乙酯,含量分别为17.90%、8.94%和16.55%;再次为乳酸乙酯,含量分别为12.36%、17.01%和12.06%。赤霞珠干红葡萄酒中特有的检出成分为乙酸异戊酯和丙酸;玫瑰香葡萄酒中特有的检出成分为3-乙氧基丙醇。蛇龙珠葡萄酒中没有检出1-丁醇、4-酮基-戊酸乙酯和癸酸乙酯,赤霞珠和玫瑰香葡萄酒中均有上述成分;玫瑰香葡萄酒中未检测到(顺)3-己烯-1-醇和糠醇。     

病害路段沥青混合料抗水损害试验研究

以发生水损害沥青路面表面层AC-13混合料为研究对象,用相同原材料在室内还原混合料试样进行抗水损害试验评价,研究水稳定性评价方法与实际路面水损害的一致性,同时探讨级配优化和抗剥落剂改善混合料水稳定性的效果,试验结果表明原路面混合料的水稳定性指标低于冻融劈裂试验（AASHTOT283）和汉堡轮辙试验（AASHTOB24）评价指标标准,对比试验表明嵌挤级配和生石灰抗剥落剂能明显改善混合料的水稳定性。     

不同立地条件玫瑰香葡萄酿酒品质及香气成分的比较研究

以山地和平地的玫瑰香葡萄为原料进行酿酒试验,并且对贮藏后葡萄进行酿酒试验。结果表明：山地葡萄的酿酒品质明显好于平地,而贮藏以后则以平地葡萄的酿酒品质较好,采用溶液萃取法提取葡萄酒中的香气成分,用GC／MS法进行分离测定,并对其主要香味化合物进行了分析比较。     

The Art of Drawing

Today, architecture is inextricably linked with drawing. Drawing and representation are generally regarded as the core skills of the professional architect. Architectural theorist and historian Mario Carpo challenges the notion that architecture has to necessarily be an art of drawing. He reminds us that the architect, as a maker of drawings, is in fact a fairly recent cultural and technical phenomenon - only emerging in early 15th-century Italy. Could, then, the digital revolution of the last 20 years be starting to challenge the drawing's hegemony?     

Rutting resistance and resilient modulus evaluation of polymer-modified SMA mixtures

Ethylene copolymer bitumen (ECB), namely Lucobit, as a thermoplastic polymer, SBS as a thermoplastic-elastomer polymer, and ethylene-vinyl-acetate (EVA) combined with Fischer-Tropsch wax and resin additives, namely Rheofalt WKR-2, as a modified thermoplastic polymer were used for stone matrix asphalt modification. Two types of asphalt modification processes including polymer-modified bitumen (PMB) and direct addition of polymer into mixture were employed and the effect of each one on resilient modulus and rutting resistance was evaluated by performing Indirect Tensile Resilient Modulus and Hamburg Wheel Tracking tests. PMB, SBS, and Rheofalt-modified mixtures resulted in lower rut depth and higher resilient modulus than did those modified by ECB. In direct addition of the polymer into mixture process, there is reduction in rutting resistance and resilient modulus of Rheofalt-modified mixtures in comparison with PMB. Furthermore, there was no improvement for ECB-modified mixtures by direct addition modification.     

DEWATERING OF HAMBURG'S DREDGED MATERIAL BY ELECTROACOUSTIC DEWATERING

Separation of liquids from a fine particle suspension plays an important role in many industrial processes. In the last few years, a number of technologies have been developed for the separation of slurries with coarse particle suspensions and intermediate particle sizes. However, separation of fine particles from these suspensions can be difficult and prohibitively costly. Battelle has developed a solid-liquid separation technology that utilizes difference in electrokinetic/acoustic properties to enhance the conventional solid-liquid separation techniques such as vacuum filters and presses. The present paper describes the application of this electroacoustic dewatering technology to Hamburg dredged material.     

沥青混合料汉堡车辙试验评价研究综述

为规范使用汉堡车辙试验(Hamburg wheel-track device,HWTD)评价沥青混合料的高温抗车辙性能和水稳性能,科学地指导试验操作程序、相关数据处理和评价指标计算等,总结和探讨了HWTD相关的试验条件、圆柱型试件影响因素、车辙深度预测模型、点位选取原则、评价指标的获取与计算方法等的现状和存在的问题,并展望了进一步的研究方向。研究结果表明,试验条件直接影响着混合料的性能评价,其试验温度、评价标准和荷载作用次数等的确定与选取应充分考虑沥青等级和环境气候的差异;并基于圆柱型试件拼接缝对混合料受力特性和车辙深度点位选取的影响,提出了相应的改善措施。相关评价指标计算模型的引入弥补了现有个别评价指标求取不明确的缺陷,为混合料性能的科学评价和区分提供指导,也为我国相关HWTD规范的制定奠定基础。     

全球形象构建：汉堡港口新城巨型工程的营销策略

如何构建一个有利于吸引全球投资资本的城市形象是地方在推动城市全球化发展中的重要问题。以汉堡港口新城为例,从全球竞争下汉堡都市区发展背景出发,分析汉堡以巨型工程建设为全球化发展战略实施点,通过采取塑造欧洲都市发展新典范、展现项目建设过程、举办国际建筑竞赛与创造文化资本的营销策略体系构建了一种有利于吸引投资资本的全球形象,揭示了地方政府推进城市国际化发展的一种作用方式,即利用重点发展项目建设,结合地方历史和文化特征,通过合适的营销策略体系构建城市的全球形象是吸引全球投资资本、促进城市国际化建设的有效方式。     

Application of ground-penetrating radar in measuring the density of asphalt pavements and its relationship to mechanical properties

The ground-penetrating radar (GPR) is a proven technology that is used typically to determine the thicknesses of pavement layers. This paper explores the applicability of the GPR to assess the density of the asphalt layer in pavements. The measurements were conducted on three test sections that were constructed using different asphalt mixtures. Each of the test sections was divided into sub-test sections that were compacted using different compaction methods and number of roller passes in order to achieve a range of asphalt mixture densities. The results showed that there was very good correlation between the GPR results and density of extracted field cores. Consequently, the paper examines the correlation between density and mechanical properties of asphalt mixtures. The results of the mechanical tests provided valuable information on the effect of density on performance.