By use of the 2-m McMath-Pierce telescope at Kitt Peak, the high-quality spectra of a moderate-brightness plage near the center of solar disk were obtained. The
Experimental and theoretical support in favor of a linear chain, and an equilateral triangle, structure for the ground state of <sup>12</sup>C are provided, whi
The first satellite laser ranging system for daylight tracking in China was set up at Shanghai Observatory, Chinese Academy of Sciences. Both false alarm probab
The notions of quasi k-Gorenstein algebras and W~t-approximation representations are introduced. The existence and uniqueness (up to projective equivalences) of
The spectra of the dielectrical constant and dielectrical loss in three nanostructured α-Fe<sub>2</sub>O<sub>3</sub> samples at different annealed temperatures
A model for binary evolution is introduced which can determine whether the rotation of components is synchronized with the orbital motion, and can calculate the
The formation of nanocrystalline Fe<sub>73.5</sub> Cu<sub>1</sub>Nb<sub>3</sub>Si<sub>13.5</sub> B<sub>9</sub> alloy by annealing an amorphous Fe<sub>73.5</sub>
The crystal structures and phase transformation of zirconia ceramics have been investigated by means of X-ray powder diffraction and Rietveld powder diffraction