We present late-time near-infrared (NIR) and optical observations of the type IIn SN 1998S. The NIR photometry spans 333–1242 days after explosion, while the NIR and optical spectra cover 333–1191 days and 305–1093 days respectively. The NIR photometry extends to the M -band (4.7 μm), making SN 1998S only the second ever supernova for which such a long IR wavelength has been detected. The shape...

Biomass is a renewable energy source with great potential worldwide and in the European Union. However, valorization necessary to turn many types of waste biomass into tradable commodity that has replace coal power plants without significant modifications firing systems. Mild pyrolysis, also known as torrefaction, thermal process low-quality could be suitable for such purpose. In this work, typ...

The explosion and collapse of the World Trade Center (WTC) was a catastrophic event that produced an aerosol impacting many workers, residents, and commuters during the first few days after September 11, 2001. During the initial days that followed, 14 bulk samples of the settled dust were collected at locations surrounding the epicenter of the disaster, including one indoor location. Some sampl...

A vented corn starch dust explosion in an 11.5 m3 vessel is studied using both experimental and numerical methods. The reduced overpressure the recorded two pressure sensors mounted on wall inside of vessel. Unsteady three-dimensional Reynolds-Averaged Navier-Stokes simulations experiment are performed Flame Speed Closure (FSC) model influence turbulence premixed combustion. was thoroughly vali...

Abstract To discuss P m variation law with t in large scale coal dust explosion equipment, shock wave pipe is used and a 60 linear test system built. of measured by flame collection system. ARIMA ( p,q,d ) time series analysis model built, differential methods are to eliminate upward trend the maximum length data. By calculating autocorrelation, partial correlation coefficient, value AIC SBC, a...