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<para> A polarization-independent two-port guided-wave electrooptically tunable bandpass filter with programmable spectral output in Ti : at the 1530-nm wavelength regime is presented. The design utilizes an asymmetric interferometer with interdigital electrode sets on its arms that allow the control of the polarization coupling coefficient on individual sets electronically...
2-cis-[2- 14 C]Xanthoxic acid prepared from natural violaxanthin was supplied to a sliced ripening avocado (Persea americana cv. Hass) fruit together with cold traps of the 1 ,4 -cis- and 1 ,4 -trans-diols of ABA. 16% of the labelled xanthoxic acid was recovered as ABA and its diols (which, it was found later can be formed in vivo by reduction of added [ 14 C]ABA)...
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