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radiocarbon n.【化學】放射性碳。

radiocardiogram

Arguments and evidence cited against a miraculous origin of the shroud images include a letter from a medieval bishop to the avignon pope claiming personal knowledge that the image was cleverly painted to gain money from pilgrims ; radiocarbon tests in 1988 that yielded a medieval timeframe for the cloth ' s fabrication ; and analysis of the image by microscopist walter mccrone , who concluded ordinary pigments were used 爭論和證據卻與裹尸布的神奇起源相反,包括一封中世紀的主教寫給教宗阿維尼翁的信,聲稱肖像是有人運用容貌知識聰明地印上去,為了從朝圣者身上獲得金錢; 1988年,碳的放射性同位元素測試得出這是一塊中世紀時期制造的偽造物;分析肖像的顯射鏡技術人員沃爾特指出,這只是使用了一種平常的顏料。

The bacterial bioplastic coating argument is the strongest , as there have been cases in which ancient textiles have yielded radiocarbon dates much younger than other artifacts in the same sites ? most notably in the instance of mummy 1770 in the british museum , whose bones dated 800 to 1 , 000 years older , according to the radiocarbon tests , than the textile in which they were wrapped 細菌性的“原生體覆蓋物”的爭論來得更激烈,已經有案例,就是古代紡織品的放射性碳年代測定比其他同樣大小的史前器物的年代要晚得多? ?最值得注意的例子就是1770年陳列在大英博物館的木乃伊,根據放射性碳年代測定,骨骼的年代為800至1000年之久,它們都被包裹著。

Archaeologists have not excavated the site in modern times , and there has been no radiocarbon dating , but juval is the nearest place to the hollow where a number of the flowering plants and mosses associated with ? tzi now grow 考古學家直到現代才到那兒發掘,遺址還沒有碳14定年,但是,許多與奧茲有關的開花植物與蘚類,現在都在居佛生長,在發現奧茲的地點周圍,有這種特徵的就數居佛最近了。

By examining these samples for the presence of radiocarbon , the developer of a particular drug can see whether the active ingredients are absorbed into the body and , if they are , how long they persist there 通過檢測這些對象中放射性碳,特殊藥物的研發者可以看到藥物有效成分是否被機體吸收,如果是,他們能存在多久。

Using radiocarbon techniques on sediments collected from four rivers , they determined that bacteria may alter riverine carbon , making it indistinguishable from ocean carbon 科學家以放射性碳技術研究收集自四條河流的沉積層,發現細菌可以改變河水里的碳,使它與海水里的碳無法區別。

The ancestors of modern man moved into and across europe , ousting the neanderthals , faster than previously thought , a new analysis of radiocarbon data shows 用放射性碳測定年代的一項最新數據顯示,現代人祖先進入歐洲并逐漸取代尼安德特人的過程要比傳統理論認為的更快。

If the coating is of a great enough thickness , according to gove , it would make the fabric sample seem younger than it should be to the radiocarbon method 依照哈里所說: “如果覆蓋物有足夠的厚度,那么放射性碳測定法會得出比預期年代要晚的結果。 ”

The portion of the shroud used for the radiocarbon dating was from a corner , which would have been handled often , increasing the likelihood of contamination 來自裹尸布一角的部分用作放射性碳年代測定,通常是經過處理的增加了被污染的可能性。

Standard test methods for determining the biobased content of natural range materials using radiocarbon and isotope ratio mass spectrometry analysis 使用放射性碳和同位素比率質譜分析法測定天然材料中生物基含量的標準試驗方法

The initial stone circle at stonehenge ? the so - called sarsen stones ? has been radiocarbon - dated to between 2600 and 2500 b . c 對巨石陣中的石材(就是所謂的砂巖石)進行放射性碳測定,日期在公元前2600年到公元前2500年之間。

Using the technique of radiocarbon dating , they all agreed that the cloth dated to the 13th or 14th century ( 1260 to 1390 ) 他們使用放射性碳年代測定法,都同意布料是回溯到十三或十四世紀( 1260年到1390年) 。

The researchers used radiocarbon dating on 22 pieces of microscopic charcoal found among neandertal tools in fire pits in gorham cave 研究者們使用放射性碳方法為在山洞中發現的22片木炭確定年代

Bacteria and bacterial residue carry additional carbon and would skew the radiocarbon date toward the present 細菌和細菌性殘余帶來額外的碳,會使現時測定的年代變得不準確。

The radiocarbon ages of charcoal and their implication derived from ciergou site along the haiyuan strike - slip fault 永定河上游晚更新世晚期以來的堆積階地年代測定

Radiocarbon ages of soils in china 我國土壤放射性碳年齡

Researchers use radiocarbon to study certain biological processes . 研究人員借助放射性碳來研究某些生物過程。

The leaf was allowed to photosynthesize in the presence of radiocarbon . 葉子被允許同放射性碳進行光合作用。

The material in this beach has been dated by radiocarbon . 這個海灘上的物質經過放射性碳測定。

All living things contain radiocarbon . 所有生物都含有放射性碳。