Taking the dolomite with anhydrite interlayer at bottom of Huangcaoshan Tunnel in Shanghai-Wuhan-Chengdu high-speed railway as research object, wetting deterioration and uniaxial compression tests were performed to study influence different orientations on hygroscopic characteristics rock analyze process deterioration. The cracking deformation directions analyzed respectively from time effect m...

A finite element analysis was conducted to determine the effect of moisture diffusion and hygroscopic swelling in rice. A parallel simple stochastic modeling was performed to predict the number of grains cracked as a result of moisture absorption and hygroscopic swelling. Rice grains were soaked in thermally (25C) controlled water and then tested for compressive stress. The destructive compress...

The hygroscopic properties of submicron aerosol particles were determined at a suburban site (Wuqing) in the North China Plain among a cluster of cities during the period 17 July to 12 August, 2009. A High Humidity Tandem Differential Mobility Analyser (HH-TDMA) instrument was applied to measure the hygroscopic growth factor (GF) at 90%, 95% and 98.5% relative humidity (RH) for particles with d...

Introduction Conclusions References

Assessment of neural biocompatibility requires that materials be tested with exposure in neural fluids. We have studied the mechanical performance of laser bonded microjoints between titanium foil and polyimide film (TiPI) in artificial cerebrospinal fluid (CSF). The samples were exposed in CSF for two, four and twelve weeks at 37 °C. The laser microbonds showed initial degradation up to four w...

The 880 nm group samples collected under high relative humidity condition showed high scattering coefficient at 550 nm and sulfate mass concentrations. In general, relative humidity (RH) influences the water content of aerosol particles through hygroscopic growth, which changes their optical properties. Not to mention, hygroscopic growth of sulfate aerosols must have increased scattering coeffi...

The organic fraction of atmospheric aerosols contains a multitude of compounds and usually only a small fraction can be identified and quantified. However, a limited number of representative organic compounds can be used to describe the water-soluble organic fraction. In this work, initiated within the EU 5FP project SMOCC, four mixtures containing various amounts of inorganic salts (ammonium s...

Sea spray is one of the largest natural aerosol sources and plays an important role in the Earth's radiative budget. These particles are inherently hygroscopic, that is, they take-up moisture from the air, which affects the extent to which they interact with solar radiation. We demonstrate that the hygroscopic growth of inorganic sea salt is 8-15% lower than pure sodium chloride, most likely du...

Atmospheric heterogeneous reactions can potentially change the hygroscopicity of atmospheric aerosols as they undergo chemical aging processes in the atmosphere. A particle's hygroscopicity influences its cloud condensation nuclei (CCN) properties with potential impacts on cloud formation and climate. In this study, size-selected calcite mineral particles were reacted with controlled amounts of...