Search

(E,Z)-3,13-Octadecadien-1-ol (la) was identified as the sex pheromone from the poplar twig clearwing moth,Paranthrene tabaniformis, females by gas chromatography-mass spectrometry analysis, synthesis, and laboratory bioassays. In the field tests, a trap baited with 200 µg synthetic la caught more male moths than two live female moths.

Considering that in a magnetic resonance system, if the detection coil contributes dominantly to the system noise, the performance of the whole system can certainly be improved by switching to a detection coil made of a high-temperature superconductor, and using YBa₂Cu₃O₇ thin films on 25×25 mm² LaAlO₃ substrates, we have prepared two kinds of detection coils: single-coil and two-coil. Encouragingly, their quality factors are measured to be Q>2500 for two-coil (at 22.566 MHz and 77 K) and Q>5500 for single-coil (at 92.3 MHz and 77 K), respectively. Here, we describe the details of the design, fabrication and testing of the coils.