89. wrote:
沒錯啊因為蘭嶼離火力...(恕刪)
花蓮離火力發電很近也很低阿
http://wapp4.taipower.com.tw/nsis/web/new_screen_page/005l/intime_graph_5.asp
其實我還挺好奇的，到底這些輻射傷害力有多強？
例如說太陽好了，太陽是大型的核融合反應爐，輻射超強的。
可是地球上的生物死了沒？
黴菌跟人類一樣都有細胞構造，被紫外線秒殺。但人類卻還沒死光。
我們是不是本身就有基本的幅射抗力？
伊朗的Ramsar 是全世界背景輻射最高的地區 (131 mSv/yr,約為現在福島地區的100倍)
從來沒聽說過這裡一堆人死於癌症或是生出畸形兒
http://en.wikipedia.org/wiki/Ramsar,_Mazandaran
又有研究顯示生物體以少量輻射刺激後可能產生某些有利效應，如延長壽命，增加生長及繁殖力，減少它的致癌率等。
如果你問「輻射有什麼害處？」，很多人都會答以「有可能致癌」。如果從致癌的機制來看，上述很多機能之活性化應當可以抑制致癌。為了檢驗此假設，電中研的資深研究員，酒井一夫使用該中心的低劑量率輻射照射長期照射設備做了小老鼠的連續照射實驗。
實驗使用銫137加馬射源。小老鼠的飼育係置於飼育棚的籠子內。輻射的劑量率則以改變射源的距離作調節。首先在各別位置先照射1個月左右，然後投藥，此藥為致癌劑（譯音為麥齊爾可拉音杜靈），觀察低劑量輻射對癌症的發生會帶來怎麼樣的影響。
只給予致癌劑的小老鼠，在投藥216日內，約有94％的小老鼠發生癌症。至於距射源約5公尺的飼育棚內所飼育的小老鼠，其發生率明顯地低了很多，可以看出低劑量率連續照射可抑制癌症的發生。
然後現在廣島、長崎活到90歲的很多...
會不會...New type 福島人輻射抗性+10，癌症抗性+10
身體結構演化成有輻射抗性的
initail wrote:
伊朗的Ramsar 是全世界背景輻射最高的地區 (131 mSv/yr,約為現在福島地區的100倍)
從來沒聽說過這裡一堆人死於癌症或是生出畸形兒
拉姆薩是伊朗的著名海邊度假區，部分地區有幅射性的溫泉，是全球最高自然背景輻射水平的地區之一，最高劑量為每年每人超過260毫西佛特（mSv）。
http://www.ecolo.org/documents/documents_in_english/ramsar-natural-radioactivity/ramsar.html
很多科學家都在探討這些拉姆薩是不是得到了 individuals radioresistant 輻射抗性。
In humans it is also possible that genetic alterations have occurred over the span of many generations to induce the radioresistance noted in our study. More research is needed to clarify the mechanisms that make individuals radioresistant.
所以福島地區的溫泉在未來可能變超熱門喔！
畢竟放射性治療就是用放射能殺死細胞膜脆弱的癌細胞。
kantinger wrote:
之前還有說根據某研究
燃煤發電空氣有10倍放性物質於核電廠
這要看燃料來源。本來煤炭、石油就一定會有些自然的低劑量放射性物質混在裡面。燒過以後自然就跟著煙跑出去。
至於這個放射性物質的濃度和核能電廠洩漏出來的怎麼比，我就不知道了。
但是我可以確定，美國的煤炭火力發電廠平均一天燒兩千噸煤炭，就算是百萬分之一的物質，一天都會洩漏出兩公斤。十億分之一的物質，一天都會洩漏出兩公克。而美國有將近1500個這樣的發電廠。也就是說十億分之一的物質，一天都會洩漏出三公斤，一年洩漏出一公噸。
要不要恐嚇一下那些反核的三腳貓，你們覺得煤炭裡面含有的放射線物質是大於十億分之一，還是小於十億分之一啊？
http://en.wikipedia.org/wiki/File:Uranium_and_thorium_release_from_coal_combustion.gif
Annual release of uranium and thorium radioisotopes from coal combustion, predicted by ORNL to cumulatively amount to 2.9 million tons over the 1937-2040 period, from the combustion of an estimated 637 billion tons of coal worldwide.
http://en.wikipedia.org/wiki/Radioactive_waste
According to U.S. NCRP reports, population exposure from 1000-MWe power plants amounts to 490 person-rem/year for coal power plants and 4.8 person-rem/year for nuclear plants during normal operation, the latter being 136 person-rem/year for the complete nuclear fuel cycle.
http://www.scientificamerican.com/article.cfm?id=coal-ash-is-more-radioactive-than-nuclear-waste
Among the surprising conclusions: the waste produced by coal plants is actually more radioactive than that generated by their nuclear counterparts. In fact, the fly ash emitted by a power plant—a by-product from burning coal for electricity—carries into the surrounding environment 100 times more radiation than a nuclear power plant producing the same amount of energy. *
monkeywrench wrote:
這要看燃料來源。本來...(恕刪)
http://en.wikipedia.org/wiki/Fossil-fuel_power_station
1000MW的火力發電廠會產生5.2公噸的鈾(內含34公斤的鈾235)，12.8公噸的釷。1000MW的核電廠會產生30短噸(27公噸)高放射線物質。
A 1,000 MW coal-burning power plant could have an uncontrolled release of as much as 5.2 metric tons per year of uranium (containing 74 pounds (34 kg) of uranium-235) and 12.8 metric tons per year of thorium.[21] In comparison, a 1,000 MW nuclear plant will generate about 30 short tons of high-level radioactive solid packed waste per year.[22]
美國自爆燃燒煤礦如同排放155倍三浬島事故中無法控制的放射能到大氣
It is estimated that during 1982, US coal burning released 155 times as much uncontrolled radioactivity into the atmosphere as the Three Mile Island incident
又自爆正常操作下，燃煤的輻射劑量是核電廠100倍.
It should also be noted that during normal operation, the effective dose equivalent from coal plants is 100 times that from nuclear plants.
最後是大絕招，"因此就算你拿車諾比事件來比，也沒有燃煤發電廠造成的傷害還糟糕"
Hence, it is not going to cause as much as damage as the uranium and thorium which are released from coal-fired power plants which have much higher half-lives.
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