This paper introduces a low-noise low-costΣA modulator for digital audio analog-to-digital conversion. By adopting a low-noise large-output swing operation amp
Intense 2.7-μm emissions are obtained from Er~(3+)/Nd~(3+) co-doped tellurite glass samples under the 808-nm laser diode excitation.According to the absorption
[Objective]This study aimed to explore the morphological characteristics and nutrient content of fine roots of 2-year-old and 3-year-old Eucalyptus grandis plan