One of the most famous methods to predict the stiffness of short fiber composites is micromechanical modeling. In this study, a Representative Volume Element (RVE) of a beech wood flour natural composite has been designed and the orientation averaging approach has been utilized to predict its stiffness tensor. The novelty of this work is in finding the proper fiber orientation distribution func...

a reconnaissance study has been made on the distribution of 238u, 232th, 40k, 137cs andgeochemical features in soil and sediment samples at various locations on the coast of bushehr in the persiangulf. in this study a gamma-ray spectrometer based on a high purity germanium detector and a pc basedmca and x-ray fluorescence (xrf) method were used. estimation of the measured radionuclide contentha...

In this paper, we studied the research areas of Chinese natural science basic research from a point view of complex network. Two research areas are considered to be connected if they appear in one fund proposal. The explicit network of such connections using data from 1999 to 2004 is constructed. The analysis of the real data shows that the degree distribution of the research areas network (RAN...

In this paper, we studied the research areas of Chinese natural science basic research from a point view of complex network. Two research areas are considered to be connected if they appear in one fund proposal. The explicit network of such connections using data from 1999 to 2004 is constructed. The analysis of the real data shows that the degree distribution of the research areas network (RAN...

Many quantum key distribution (QKD) schemes are based on sending and measuring qubits—twodimensional quantum systems. Yet, in practical realizations and experiments, the measuring devices at the receiver’s (Bob) site commonly do not measure a two-dimensional system but rather a quantum space of a larger dimension. Such an enlargement sometimes results from imperfect devices. However, in various...