Toward a better understanding of multifunctional cement-based materials: The impact of graphite nanoplatelets (GNPs)

The impact of graphite nanoplatelets (GNPs) on the physical and mechanical properties of cementitious nanocomposites was investigated. A market-available premixed mortar was modified with 0.01% by weight of cement of commercial GNPs characterized by two distinctively different aspect ratios.The rheological behavior of the GNP-modified fresh admixtures was thoroughly evaluated. Hardened cementitious nanocomposites were investigated in terms of density, microstructure (Scanning Electron Microscopy, SEM and micro–Computed Tomography, μ-CT), mechanical properties (three-point bending and compression tests), and physical properties (electrochemical impedance spectroscopy, EIS and thermal conductivity measurements). At 28 days, all GNP-modified mortars showed about 12% increased density. Mortars reinforced with high aspect ratio GNPs exhibited the highest compressive and flexural strength: about 14% and 4% improvements compared to control sample, respectively. Conversely, low aspect ratio GNPs led to cementitious nanocomposites characterized by 36% decreased electrical resistivity combined with 60% increased thermal conductivity with respect to the control sample.     

亚平宁之风

2005年,米兰Buratti＋Battiston Architects工作室接受La Perla的邀请,为他们设计新的专卖店, 把原有的店面翻新。另外,在世界各地重要的城市增加新的专卖店。La Perl是意大利著名的高档内衣品牌。在成功推出多个女式内衣系列后,公司决定大力扶持男式系列,在经过多年的市场调查后,公司在米兰开设了第一家男装旗舰店,这标志着La Perl向新的领域迈进了第一步。毫无疑问,“时尚”是La Perl品牌的重要因素, 在La Perl的店堂内也应该散发出一种奢侈的味道。但是鉴于男装和女装的不同特点,La Perl采用了完全不同于女装的室内风格,用多种清晰直接的表现方式与男装形成鲜明对比,突出了时装本身。男装专卖店用了大量灯光照明,配合各种玻璃和明亮的颜色,     

漂流的别墅

一个多世纪以来，Tuscan Benetti造船厂是意大利航海界最具声望的名字之一。他们所生产的船舶永远是优雅，技术与力量的完美集合体，简言之，Tuscan Benetti就是无可挑剔的绝对象征。因此，他们的产品一直是船主与造船厂选择时的参照。     

旧建筑的新生活

设计师Sim one M icheli来自意大利的佛罗伦萨,他的设计在色彩和形状方面往往有大胆的创新,充满了现代感和各种各样的变化,没有人能猜到他的下个设计会是什么样子。他尤其擅长一些宾馆、商店和展览的室内设计。该项目位于意大利北部城市瓦雷泽。别墅的主人希望自己的房子是独一     

旧工业的回归

米兰毫无疑问是欧洲的时尚之城、设计之都。这里有世界上最著名的时装公司的总部大楼,也有最声名狼藉的设计工作室。年轻的设计师们从欧洲各地跑来这里,他们在大师的设计室里工作,希望可以发掘他们成功的秘诀,想着某一天自己可以离开这里,独当一面。时装与设计越来越多地结合在一起。设计师们常常不仅是设计展览馆和办公大楼,还要设计时装店和新的工业大楼。这样的事例越来越多,每一座成功设计的时装店都使一个或更多的设计师名声大振。另外,很多的时装公司在自己的公司内创造一种     

Prediction of condensation in steam ejector for a refrigeration system

An experimental refrigeration system based on a two-stage steam ejector was set-up in the Thermodynamics and Heat Transfer Laboratory of our Department. The system optimization and realization have been described elsewhere ( [Grazzini and Mariani, 1998] and [Grazzini and Rocchetti, 2008] ). In both stages, primary flows are highly supersonic and reach low pressure and temperature levels. As usual in the literature, an ideal gas model was used during the design process. This paper is intended to check the validity of this assumption. In order to understand the actual working condition of our system, several models have been compared. The presence of high flow speed suggests the existence of metastable conditions. To set the border for the metastable region, the spinodal curve has been drawn. Isentropic expansion of vapour through the nozzle, modelled as ideal gas, seems well within the metastable zone. However, the Classic Nucleation Theory shows that the Wilson line is crossed at the nozzle throat. Condensation produces a marked difference in the conditions at the nozzle exit. Results coming from the present analysis will be used in further optimization of the experimental ejector design.     

技术的盛宴——香港PISSARRO餐厅

Michael Young毫无疑问是一位知名度很高的工业设计师。他最近的产品设计里面包括一些自行车、水瓶、U盘和稀奇古怪的各种“小”东西。所以，他在接手这个餐厅的时候，Michael还是有点犹豫的：这和一个独立的产品设计在规模上有很大的不同，不得不考虑很多在产品设计中不存在的因素。     

准备出发

在经过多年品牌形象的发展后，意大利国家航空公司（Alitatia）决定聘请著名的设计师马西莫伊欧萨·吉尼（Massimo losa Ghini）为该品牌设计一种新型的现代形象。马西莫伊欧萨·吉尼本人与Ferrari形象品牌的合作在近年取得了巨大的成功。