105,571 research outputs found
An improved pulsed electroacoustic system for space charge measurement under AC conditions
Full text linkIn this paper, an improved space charge measurement system based on the pulsed electro acoustic technique (PEA) is presented. The new system gives an essential way to examine the role of space charge in electrical aging process under AC conditions. The system setup for AC measurement is presented and detailed in this paper with comparison to the old system. There are two features with improved PEA system. A pulse generator with a 3 kHz repetition rate is utilized to reduce the measurement time. The Eclipse data acquisition system is used to achieve the high data acquisition rate. The results which were taken from both old and new PEA system show that heterocharge can be formed in the region close to the lower electrode under AC electric field. Apparently the results captured from the new system have better phase resolution than the old system. The space charge decay profile measured by the new system can reflect vividly on the charge dynamically changing. The utmost space charge information was saved as the measurement time was dramatically shortened by the improved system
Crystallization temperature and activation energy of rf-sputtered near-equiatomic TiNi and Ti50Ni40Cu10 thin films
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Characteristics, genesis, and classification of two Andisols in Chihsingshan Mountain area, northern Taiwan.
No full textCrystallization Temperature and Activation Energy of r.f.-Sputtering Near-equiatomic TiNi and Ti50Ni40Cu10 Thin Films
No full textCharacteristics, genesis, and classification of podzolic soils in Tamanshan Mountain, northern Taiwan.
No full textUltisols and Alfisols in the Kenting region, southern Taiwan: I. Morphology, soil propereties, and classification.
No full textSoil characteristics and pedogenesis of loamy Spodosols near Wanghsiang Mountain in central Taiwan.
No full textRelationshios between soil morphology, classification and topography in Yenliao district, northern Taiwan.
No full textOttelia songmingensis Z. Z. Li, Q. F. Wang & J. M. Chen
No full textOttelia songmingensis (Z.T. Jiang, H. Li & Z.L. Dao) Z.Z. Li, Q.F. Wang & J.M. Chen, stat. & comb. nov. Basionym:— Ottelia acuminata (Gagnepain) Dandy var. songmingensis Z.T.Jiang, H.Li & Z.L.Dao (2005: 425) Type:— CHINA. Yunnan: Songming County, Heilongtan Spring, elev. ca. 1965 m, on slowly flowing ditches, from 40 cm to 1 m or more deep, 21 August 2003, Z. T. Jiang & Z. L. Dao 221 (♂, holotype KUN!); Z. T. Jiang & Z. L. Dao 222 (♀, paratype KUN!) Distribution and habitat:— Ottelia songmingensis presently is only recorded from Songming County, Yunnan Province, China. It grows along streams, where the water depth is from 40 cm to 1 m or deeper. Note:— This species is close to Ottelia guanyangensis and O. fengshanensis but differs in owing unisexual flowers, long banded leaf and unwinged fruit.Published as part of Li, Zhi-Zhong, Wang, Qing-Feng & Chen, Jin-Ming, 2022, Ottelia songmingensis, a new rank and combination of Hydrocharitaceae from China, pp. 101-102 in Phytotaxa 554 (1) on page 101, DOI: 10.11646/phytotaxa.554.1.9, http://zenodo.org/record/680986
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