著者

Quoc-Trinh VO Quang-Thang DUONG Minoru OKADA

出版者

The Institute of Electronics, Information and Communication Engineers

雑誌

IEICE TRANSACTIONS on Electronics (ISSN:09168516)

巻号頁・発行日

vol.E105-C, no.8, pp.358-368, 2022-08-01

---

This paper proposes constant voltage design based on K-inverter for cooperative inductive power transfer (IPT) where a nearby receiver picks up power and simultaneously cooperates in relaying the signal toward another distant receiver. In a cooperative IPT system, wireless power is fundamentally transferred to the nearby receiver via one K-inverter and to the distant receiver via two K-inverters. By adding one more K-inverter to the nearby receiver, our design is among the simplest methods as it delivers constant output voltage to each receiver via two K-inverters only. Experimental results verify that the proposed cooperative IPT system can stabilize two output voltages against the load variations while attaining high RF-RF efficiency of 90%.

著者

Hiroshi SHINJI Minoru OKADA

出版者

Japanese Society for Plant Cell and Molecular Biology

雑誌

Plant tissue culture letters (ISSN:02895773)

巻号頁・発行日

vol.8, no.2, pp.129-132, 1991 (Released:2010-04-30)

参考文献数

8

---

Time course of the growth of cultured Pinellia ternata plants was investigated.Corm-like bodies were cultured in a MS liquid medium containing 0.25mg/l IAA and 0.5mg/l BA by shaking. On the 13th, 27th, 41th, and 54th day, the dry weight of each organ-corm-like body, leaf blade, petiole, root-was measured. From these data, growth parameters and distribution rate of dry matter in each organ were calculated.Relative growth rate was at its maximum at the beginning of culture and then decreased gradually. The growth rate in the dry matter of the whole plant was at its maximum between the 13th-27th day.The time course of the distribution rate of dry matter in each organ indicates that during the first half of the culture period, mainly leaf blades and petioles grow and during the latter half, mainly corm-like bodies grow.Judging from the weight of corm-like bodies obtained for a fixed period and the cost in gaining corm-like bodies, the best culture period was 41 days.

著者

樋口 正視 岡田 稔 MASAMI HIGUCHI MINORU OKADA ツムラ中央研究所 ツムラ中央研究所 Tsumura Central Research Laboratories Tsumura Central Research Laboratories

雑誌

生薬學雜誌 = Natural medicines (ISSN:13403443)

巻号頁・発行日

vol.50, no.2, pp.170-175, 1996-04-20

---

The relationship between the developmental stages of spadix and the developments of pollen grains and the embryo sacs of Pinellia ternata BREIT. was morphologically studied. When the limb of the spathe began to loosen, about 24% of the embryo sac in the female flower were in matured stage, with the anthers in the same spadix still remained in dehiscens. When the anthers began to dehisce and the pollen grains were shedding, most of the embryo sacs in the female flowers were in matured state. When self- or cross-pollinations with other female flowers were performed while the anthers were still undehisce, all spadixs formed fruits. The rate of fructification and the number of fruits in fructificated spadix obtained by these early stage pollinations was definitely higher than those obtained in isolated culture field by the open pollination system. Over 90% of the fruit thus obtained by the early stage pollinations were germinated. Some morphological characters of the progeny obtained by cross-pollination segrigated. The protogyny, or the senility of the female flower when the pollen grains start shedding, may be a cause of rare fruit formation of the plant in nature.