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Diterpenoids are the major group of antimicrobial phytoalexins in rice 1,2 . Here we report the discovery of a rice diterpenoid gene cluster on chromosome 7 (DGC7) encoding the entire biosynthetic pathway to 5,10-diketo-casbene, a member of the mono-cyclic casbene-derived diterpenoids. We revealed that DGC7 is regulated through MeJA mediated epigenetic control directly by JMJ705 3 . Functional characterization of pathway genes revealed OsCYP71Z21 to encode a casbene C10 oxidase, sought after for the biosynthesis of an array of medicinally important

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This study proposes an improved decoupled model of mutually coupled dual-channel switched reluctance machine (DCSRM) based on the equivalent inductance and flux linkage characteristics that consider magnetic saturation in dualchannel operation (DCO) mode. A three-dimensional finite-element analysis (FEA) is used to calculate the static phase equivalent inductance of DCSRM for the simultaneous two-phase excitation with consideration of saturation. And an indirect experimental test is performed to measure the equivalent flux linkage under the simultaneous two-phase excitation and compared with the FEA results. In this improved decoupled model, the phase equivalent inductances and flux linkages in each channel are independent to each other and separately expressed as a function of rotor position and their own phase current. The static magnetic characteristics, details of modelling procedure and performances prediction for the DCSRM under DCO mode without and with consideration of saturation are compared. Finally, an experimental setup for a 12/8 DCSRM drive system based on dSPACE is built and the simulation and experimental results are compared, which verifies high accuracy of this improved modelling method.

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A causal model of a mechanism related to entrepreneurial decision making was built using information obtained from psychological questionnaires (the Entrepreneurial Alertness Questionnaire, Miao, 2006; The Prior Knowledge Questionnaire, derived from Shane, 2000, and 2 questionnaires developed by Miao - The Entrepreneurial Opportunity and Entrepreneurial Decision Making Questionnaire). Based on data from 327 entrepreneurs, the hypothesized structural equation model was validated. Results indicated that the individual psychological factors (entrepreneurial alertness and prior knowledge) were the antecedents of entrepreneurial opportunity recognition and influenced entrepreneurial decision-making criteria. Therefore, it was evident that opportunity recognition played a key mediating role in the model.