The objective of this study was to determine the long-term water sorption, solubility and hygroscopic expansion resin composites with without incorporated short fibers. Three incorporating fibers were examined: everX Posterior (EVX), NovoPro Universal (NPU) Flow (NPF). Four Particulate filled used as controls: Filtek bulk Fill (FBF), one bulkfill (FBO), Supreme XTE (XTE), (XTEF). For sorption m...

An Aerodyne quadrupole aerosol mass spectrometer (Q-AMS) was deployed in Hyytiälä, a forested rural measurement site in southern Finland, during a 2-week measurement campaign in spring 2005. Q-AMS measures mass concentrations of non-refractory species including sulphate, nitrate, ammonium and organics from submicron particles. A positive matrix factorization method was used in identifying two o...

Highly hygroscopic pyridine N-oxide, C5H5NO, dissolves in water absorbed from atmospheric air, but it crystallizes in the neat form of the aqueous solution under high pressure. The crystals grown at high-pressure isochoric conditions are of the same phase as that obtained from anhydrous crystallization at ambient pressure. This feature can be employed for retrieving compounds highly soluble in ...

Abstract The problem of hygroscopic expansion FR4 based large-size PCBs is discussed using the example Micromegas detector. readout electrodes detector located on anode printed circuit board assumed to have precise dimensions. During production and delivery process, PCB exposed different temperature humidity conditions. As a result, size differs from nominal one at moment assembly appears be re...

An Ultrafine Tandem Differential Mobility Analyser (UF-TDMA) has been used in several field campaigns over the last few years. The investigations were focused on the origin and properties of nucleation event aerosols, which are observed frequently in various environments. This paper gives a summary of the results of 10 nm and 20 nm particle hygroscopic properties from different measurement site...