252,869 research outputs found
Beheavior of Campylobacter jejuni during the manufacture and storage of Chinese-style sausage
No full textErythrodes triantherae C. L. Yeh et C. S. Leou (Orchidaceae), a New Species Bearing 1-3 Anthers
No full text本文記述產自臺灣?嶼之新種?科植物「三藥細筆?」之學名、形態特徵、產地、花期及標本等資?。本種之主要特徵為花之蕊柱具有1~3 枚花藥，即有1 或2 枚雄蕊常在蕊柱腹面出現，唇瓣較小，長4.5～5.5 mm，基部囊?而無長距。對於本種之花藥?目之變?情形及對於果實發育之初步觀察結果亦加以註記。並提供臺灣Erythrodes 屬之新檢?表。A new species of Erythrodes Blume (Orchidaceae), E. triantherae C. L. Yeh et C. S. Leou, from Lanyu of Taiwan is described and illustrated. It is characterized by the column which is adorned with 1-3 anthers, I.e. additional 2 or 1 stamens often present on the ventral side of column and in the lip which is much shorter (4.5-5.5 mm long) and only saccate at base, not long spurred. Results of a preliminary observation on the variation of anther number, and on the development of fruits have also been noted. We also provide a new key to the species of Erythrodes in Taiwan
A comparative study of the effects of methyl jasmonate and abscisic acid on some rice physiological processes
No full textOn the performance of densified DVB-H single frequency networks
No full textThe broadcasting of TV programmes to mobile phones can be enabled by the newly developed technology called Digital Video Broadcasting-Handheld (DVB-H). Because of the scarcity and cost of frequency resources, frequency reuse needs to be considered when rolling out DVB-H networks. By simulcasting the same content from several transmitters, a Single Frequency Network (SFN) can provide good coverage and good frequency efficiency. In this paper, the performance of densified DVB-H SFN networks is analysed in terms of the coverage probability under different coverage requirements with and without frequency reuse. A dichotomy searching approach is used to determine the optimal cell radius for a cell in a densified DVB-H SFN for a given network topology. Based on the optimal cell radius map and a SFN gain map generated from the simulation results, guidelines are proposed on how to avoid the potential pitfalls in configuring the parameters of a densified DVB-H SFN network and optimise its parameters in terms of minimising the cost of the network for a range of predefined network parameters
Application of virus-induced gene silencing technology in gene functional validation of orchids in Orchid biotechnology
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