嚼一嚼就刷好牙!愛地球就從「這一片」開始
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)「環保愛地球」已成為全球化運動,尤其是零碳排及減塑是首要目標之一。有鑑於此,加拿大公司Change Toothpaste發明一種可咀嚼的牙膏錠,成分全天然,就連包裝袋也能堆肥!
你知道嗎?牙膏容器需使用11層塑料、聚合物及樹脂等材料,回收起來十分困難,並且統計發現,全球每年超過9億個牙膏容器進入垃圾掩埋場及海洋,需要500多年才能分解,因此來自加拿大的Damien vince 及 Mike medicoff創立了Change Toothpaste公司,研發出環保零汙染的牙膏錠。
Mike medicoff表示,成立Change Toothpaste的啟發來自於他的孩子,當他了解傳統牙膏包裝對於環境的危害後,他明白勢必要做出改變。對於Damien vince來說亦是如此,Damien在回收商家庭中成長,自己堆肥、種植食物,然而長大搬出去後,這些習慣消失了,是孩子讓他意識到要做更多事,並將主動權掌握在自己手中,因此2人決定攜手合作,研發出能夠解決過敏、偏好及需求的全天然產品。
環保牙膏錠共有3種香味,分別有留蘭香、肉桂及泡泡糖,成分全天然,包含香味、顏色,甚至是甜味。成分不含麩質、乳製品、堅果、大豆,以及刺激性化學物質,而且是全素食,受眾十分廣泛。使用方式很簡單,將一顆牙膏錠放入口中,咀嚼幾次後,再用被水浸濕的牙刷刷牙即可。
值得一提的是,牙膏錠使用的外包裝袋亦是環保材質,可回收或堆肥,具備環保認證。Change Toothpaste除了有牙膏錠之外,還有環保竹牙刷、可堆肥牙線,其中,淘汰竹牙刷時可將其折斷並堆肥或回收,且為了鼓勵消費者落實環保,購買一支竹牙刷即捐贈一支,可看出創辦人愛地球的決心。
文章出自: https://www.chinatimes.com/realtimenews/20240506003178-260408
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.