The genesis of lasing, as an evolution the laser hybrid eigenstates comprised electromagnetic modes and atomic polarization, is considered. It shown that start coherent generation at threshold preceded by formation a special state lasing prethreshold. This characterized enhanced coupling among excited atoms modes. leads to increase in rate stimulated emission and, ultimately, lasing. At prethre...

PURPOSE To evaluate a new method designed for estimating the tumor extent in radical prostatectomy specimens. The tumor extent was correlated to preoperative PSA and to several pathologic findings in the surgical specimens as well. MATERIALS AND METHODS Tumor extent was estimated in 118 consecutive radical prostatectomies through a simple point-count method. Drawn on a sheet of paper, each qu...