Theoretical and experimental results prove that all the energy of the primary source is absorbed by secondary source and no energy is reflected back by it, when the secondary source is an unidirectional source.
REE occur in U Th containing minerals as micro inclusion in native gold,the partition characteristics of which can be used to discuss the classification of hard rock gold deposits and the primary source of placer gold.
Based on the comparison of clay minerals contents primary source of the material for redeposited sediments has been reconstructed.
Primary source data preparation and generation of annotation word indices are used to significantly reduce query processing time.
The creation of quiet zones in a diffuse sound field due to a multipole spherical primary source by means of a radially vibrating surface set in the side of a rigid sphere (secondary source) is investigated in this article.
In addition to emphasizing the importance of multi-scattering, this work endeavors to find the appropriate cap angle of the control source to achieve acceptable noise attenuation for different vibrating modes of the primary source (monopole, dipole).
The primary source of this placer is a concentrically zoned alkaline ultramafic massif.