A methodology for the identification of glass panes of different origin in a single stained glass window: Application on two 13th century windows     

Olivier Schalm  Ine De Raedt  Joost Caen  Koen Janssens 《Journal of Cultural Heritage》2010,11(4):81-492

The chemical composition of 11 glass panes originating from two 13th century non-figurative windows were analyzed by means of Scanning Electron Microscopy–Energy Dispersive X-ray system (SEM-EDX). The windows were discovered in the back-wall of the triforium during the restoration of the choir of the cathedral St. Michael and St. Gudule in Brussels (Belgium). In order to determine if these windows were fabricated with glass of different origin or not, the compositional difference between the panes were compared with the variation in composition as a result of the following causes: (1) compositional fluctuation between panes cut from the same sheet of glass, (2) compositional fluctuation caused when panes are cut from different sheets that were made with the same batch, (3) compositional fluctuation caused when the glass is made from different batches at the same production center, and (4) compositional fluctuation as a result of glass produced at different fabrication centers.  相似文献   

Parallelized ultra-high throughput microfluidic emulsifier for multiplex kinetic assays     

Jiseok Lim  Ouriel Caen  Jérémy Vrignon  Manfred Konrad  Valérie Taly  Jean-Christophe Baret 《Biomicrofluidics》2015,9(3)

Droplet-based microfluidic technologies are powerful tools for applications requiring high-throughput, for example, in biochemistry or material sciences. Several systems have been proposed for the high-throughput production of monodisperse emulsions by parallelizing multiple droplet makers. However, these systems have two main limitations: (1) they allow the use of only a single disperse phase; (2) they are based on multiple layer microfabrication techniques. We present here a pipette-and-play solution offering the possibility of manipulating simultaneously 10 different disperse phases on a single layer device. This system allows high-throughput emulsion production using aqueous flow rates of up to 26 ml/h (>110 000 drops/s) leading to emulsions with user-defined complex chemical composition. We demonstrate the multiplex capabilities of our system by measuring the kinetics of β-galactosidase in droplets using nine different concentrations of a fluorogenic substrate.  相似文献   

试论城市色彩规划设计的错误倾向与应对措施     

陈彬  陈贤浩 《科技广场》2009,(6):70-73

文章从城市色彩的内涵概念入手,论述了在城市化的今天,城市色彩规划设计的现实意义和原则,揭示了当前城市色彩实施中应反对的某些错误倾向,以及克服这些倾向的对策、措施.  相似文献