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New Assay Method for Surveying Anti-Emetic Compounds from Natural Sources
Y. Akita,Y. Yang,T. Kawai,K. Kinoshita,K. Koyama,K. Takahashi,K. Watanabe 한국생약학회 1998 Natural Product Sciences Vol.4 No.2
The new assay method was developed by using young chicks instead of frogs for screening of anti-emetic compounds from natural sources. Comparing with our previous method using leopard and rapid frogs, the advantages of the new method were not only completely parallel results but also decreasing standard errors. Hinesol and eudesmol were isolated from MeOH extract of Atractylodes lancea rhizome as the anti-emetic principles.
An Evaluation of Concentrated and Distributed Windings in Interior PM and Claw Pole Motors
M. Inoue,Y.kuroda,S.Nishimura,H. Akita 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper describes a method to compare the relative merits of a concentrated and a distributed winding motor. Before the comparison, recent developments of coil manufacturing process for the both winding topologies are reviewed in order to assume appropriate copper fill factor in the comparison. A same frame size and a same rotor model are used in the comparison and only the coil winding topologies are different. The results show the advantages of distributed winding and concentrated winding change with not only motor core length but also output torque density. Another comparison between concentrated winding and distributed winding with a new type claw pole motor is also presented which is expected to be a rare-earth free motor topology.