※ 引述《ArgoNautyoyo (笨蛋)》之銘言： : heptatriaconta 和 alkenone : 這2個是什麼意思呢 : 本身是外行人手邊又沒化學專用字典 : 請幫幫忙 >"< : 謝謝 第一個你可以參考這個網址 http://0rz.net/e71HC 他的意思是 "37" 也就是有37個的意思，是一種計數的方式 常用的大概就是1-20 你不問 我大概也不知道 囧 至於alkenone 用維基百科查的結果如下： 就內文來看，好像是長碳鏈的酮類 或者是 具有雙鍵、長碳鏈的酮類 Alkenones are highly resistant organic compounds (ketones) produced by phytoplankton(浮游植物) of the class Prymnesiophyceae. Specifically, coccolithophoroid Emiliania huxleyi(?好像是細菌或黴菌？) respond to changes in water temperature by altering the production of long-chain unsaturated alkenones in the structure of their cell. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ It has been established experimentally that the temperature of the ambient water in which the organisms form their cell can be estimated from measuring the ratio of their unsaturated alkenones (C37-C39) that are preserved in marine sediments. The Unsaturation Index of “di” versus “tri” unsaturated C37 alkenone is calculated according to the following relationship: UK′37=[C37:2]/[C37:2+ C37:3] The Unsaturation Index can then be used to estimate the water temperature according to the following experimental relationship: T (οC) = (UK′37 - 0.039) / 0.034 ------------------------------------------------------ 看到C37之後 就知道你為什麼要問heptatriaconta了 這個好像化學辭典也找不到 ORZ 希望有幫到你 XD --

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