Natural ageing has a major influence on the properties of paper, while light, heat, and humidity are environmental influences that most disrupt stability paper. This research focuses changes in straw-containing papers caused by accelerated ageing. The were made laboratory mixing straw pulp with recycled fibers different weight ratios artificially aged dry-heat treatment (thermal oxidation) UV r...

We present a systematic study of the radial brightness profiles in Hα of a set of H ii regions in 6 late-type spiral galaxies, complete down to stated limiting luminosities. We have sufficient linear resolution in our observations to be able to fit models in which the effects of the radial fall off in density and in mean degree of ionization can be distinguished. We find a sharp break in the pl...

The extraction efficiency and the brightness are critical parameters to increase performance of luminescent rectangular slabs such as scintillators, concentrators, or diamonds with NV centers. This work explains how an additional face breaking symmetry can improve brightness. study is based on a fully analytical approach corroborated experimentally cerium-doped yttrium aluminum garnet (Ce:YAG) ...

Space-borne passive microwave radiometers are widely used to retrieve information in snowy regions by exploiting the high sensitivity of microwave emission to snow properties. For the Antarctic Plateau, many studies presenting retrieval algorithms or numerical simulations have assumed, explicitly or not, that the subpixel-scale heterogeneity is negligible and that the retrieved properties were ...

The microwave interferometric radiometer of the European Space Agency’s Soil Moisture and Ocean Salinity (SMOS) mission measures at a frequency of 1.4 GHz in the L-band. In contrast to other microwave satellites, low frequency measurements in L-band have a large penetration depth in sea ice and thus contain information on the ice thickness. Previous ice thickness retrievals have neglected a sno...

this research was carried out in order to investigate on the effects of packaging type and storage temperature on qualitative and quantitative characteristics of dried melon. “thashkandi” and ‘ khatoni” melon varieties؛ osmotic solutions of 0% and 10% sucrose and cabinet dryer were applied for dried melon production. dried fruits were packed with modified atmosphere (pe-pa film, 85 micron thick...