一款以「威爾斯王妃凱薩琳」命名的玫瑰花，近日正式亮相，象徵大自然的療癒力量。英國民眾可於英國皇家園藝會或「哈克內斯玫瑰」（Harkness Roses）官網訂購此品種玫瑰花，當中部分收益將捐給關注癌症治療的慈善組織皇家馬斯登醫院（The Royal Marsden Hospital）。

BBC報導，英國皇家園藝學會（RHS）表示，這款名為「凱薩琳玫瑰」（Catherine’s Rose）的花卉，旨在喚起人們對戶外活動如何促進心理、身體與心靈健康的關注。

這種繁花型（Floribunda）的玫瑰擁有珊瑚粉色的花瓣，散發著土耳其軟糖與芒果的香氣。每售出一株「凱薩琳玫瑰」的收益，將捐贈給皇家馬斯登癌症慈善機構。凱薩琳王妃去年曾在位於倫敦西部的皇家馬斯登醫院接受癌症治療。

以下文章來自: https://www.chinatimes.com/realtimenews/20250523002681-260408
The Log Periodic Antenna  as known as LPDA  is a wideband directional antenna that provides gain and directivity combined over a wide band of frequencies.
Both Log-Periodic Antennas and Yagi antennas are high gain directional antennas. The main difference between these antennas is that Log-Periodic Antennas support wider frequency bandwidths and are physically much larger than Yagi antennas.
The log-periodic dipole array typical VSWR is 2:1 and operates over a much wider bandwidth and will have a lower gain for an equivalent number of elements.
With this level of performance, it is ideal for many applications, although a log-periodic antenna will be much larger than a Yagi of an equivalent gain.