中间视觉条件下汽车玻璃贴膜对视力清晰度影响的实验研究

本文通过结合视力表这一视觉评价尺度,在中间视觉环境中,研究贴膜的汽车玻璃在不同人工光源下的视觉可见度以及穿透性。分析在背景亮度改变的情况下,视力清晰度的变化规律,以及透光度与清晰度的关系。     

浙江国际影视中心航空障碍灯的设计

随着民用建筑的高度不断增加,对航空安全的要求也越来越高.介绍了浙江国际影视中心后期综合制作大楼航空障碍灯的设计,旨在了解我国民用航空行业标准《民用机场飞行区技术标准》对航空障碍灯设计的要求.     

Elemental: A Do Tank

Alejandro Aravena has gained international honours and awards for his pioneering work at Elemental. An independent practice with a ‘social conscience’, Elemental seeks to deliver greater equality for urban dwellers and improve the quality of people's lives. It has formed key partnerships with Universidad Catolica de Chile (Chile's Catholic University) and the Chilean oil company, COPEC. Here Aravena describes some of the works that have informed Elemental's strategy: from its first housing project in Iquique in northern Chile to a sustainable masterplan with Arup for the coastal town of Constitución in the wake of the Chilean earthquake. Copyright © 2011 John Wiley & Sons, Ltd.     

曝光机的能量稳定性研究

分析了PCB行业曝光机的故障停机问题,指出可以通过监控照度的方法,监控曝光机的能量输出,达到稳定曝光机运行的目的.     

WTCS信号灯控制系统在矿山井下斜坡道的应用

介绍WTCS信号灯控制系统的技术特点、结构组成及其在铜矿峪矿斜坡道的具体布设方案,说明使用该系统应遵循的原则以及对生产安全管理所起的重要作用。     

逐日太阳能发电路灯照明系统设计

基于目前太阳能路灯,只能固定摆放,不能随太阳转动,不能进行最大的能量储备,设计了逐日太阳能路灯控制系统,主要涉及光电转换、光线监测、电机控制、充放电保护和路灯照明等技术及其应用,在设计中应用了双参数方法,根据时间和光强进行电机的控制,使得应用更加准确和平稳,通过实测表明,逐日太阳能路灯能够提高利用率27%,每天多储备的能量能延长3小时供电,这在天气不好及阴天时非常必要,尤其是在紧急状态下,更加难能可贵。     

弯曲河道水力特性对枢纽运行的影响及改善措施的试验研究

枢纽从凸岸到凹岸依次布置电站、泄水闸、船闸。由于弯道环流的影响,水闸泄流能力不足,壅水超高;电站进水口前有较大范围回流,泥沙淤积问题突出;船闸口门区岸坡流速较大,威胁通航安全。对此展开物理模型试验研究,通过改变凸岸岸线、设置拦漂桥、凹岸护坡等工程措施改变枢纽处水流的水力特性,使水闸泄流能力提高到规范要求,降低壅水,电站引水防沙及通航安全得到保障。以上工程措施对其他弯道上的枢纽工程同样具有借鉴意义。     

Effect of irradiation source on the dentin bond strength of a one-bottle universal adhesive containing an amide monomer

One-bottle universal adhesives have been widely used because of their simplicity of bonding procedures for various dental materials. The present study evaluated the effect of the polymerization light source on the micro-tensile bond strengths of a universal adhesive (Clearfil Universal Bond Quick) to dentin in comparison with a one-bottle self-etch adhesive (Clearfil S³ Bond Plus) and two 2-step self-etch adhesives (Clearfil SE Bond and Clearfil SE Bond 2). The adhesives were applied to extracted human dentin according to the manufacturer’s instructions and irradiated using either a quartz-tungsten-halogen (QTH) or blue light-emitting diode (LED). Subsequently, a resin composite was incrementally built on each adhesive and light-cured using the QTH. The bonded specimens were sectioned and subjected to micro-tensile bond strength tests. Both the type of adhesive and the light source were found to statistically affect the bond strength, with no interactions. The LED gave greater bond strength than the QTH. The bond strengths of the two-step adhesives were significantly higher than those of the one-bottle products, irrespective of the light source. The Clearfil Universal Bond Quick exhibited significantly higher bond strength than the Clearfil S³ Bond Plus. LED curing improved the performance of Clearfil Universal Bond Quick, and this product generated bond strength superior to that of the existing one-bottle adhesive Clearfil S³ Bond Plus.     

三维玻璃幕墙外立面装饰照明的研发和实践

对玻璃幕墙外立面装饰照明的要求是:采用高效节能光源,不眩目,不产生光污染。当玻璃幕墙建筑物的外立面由玻璃幕墙和与其平行的内衬反光膜组成,在其间又配置照明装置时,如何正确投光照亮反光膜是一个重要的问题。正确合理的照明设计是,如果玻璃幕墙外立面是二维的,照明装置可以对反光膜平行投光;如果玻璃幕墙外立面是三维的,照明装置必须对反光膜垂直投光。然后,发亮的反光膜产生漫反射,使玻璃幕墙成为清晰、柔和的发光面,使玻璃幕墙建筑物成为不眩目,不产生光污染的发光体,最终实现绿色照明。深圳市大运中心主体育场、主体育馆和游泳馆的三维玻璃幕墙外立面装饰照明采用了只能适用于二维玻璃幕墙外立面装饰照明的专利技术。