We report a low noise continuous-wave(CW) single-frequency 1.5-μm laser source obtained by a singly resonant optical parametric oscillator(SRO) based on period
Assessment of time dependent seismic hazards on segments of active fault is one of the important techniques of long term earthquake forecast for specific loca
This is the first reports of a few fossil monocotyledons, including %Liaoxia chenii% gen. et sp. nov. (belonging to Cyperaceae), %Eragrosites changii% gen. et s