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rockinuk鐵桿木蟲 (職業(yè)作家)
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[求助]
求教化學(xué)方面的文章翻譯~(簡要的解說,非精翻譯)- Part 4.
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求教化學(xué)方面的文章翻譯~(簡要的解說,非精翻譯)- Part 4. 這篇內(nèi)容是我向 RSC 索取的文件, 發(fā)表在 2002年 Chemistry in Britain 的一篇 title 為 Chemistry Encrypted 的論文~ (內(nèi)容可能涉及生物化學(xué)還是分析化學(xué)方面~ 具體~我不清楚~) 因?yàn)橄雽W(xué)這篇內(nèi)容~ 但沒有化學(xué)基礎(chǔ)及知識背景~ 上來求教化學(xué)方面的專家~ 內(nèi)容一個(gè)字一個(gè)字的輸入進(jìn) word, 然后貼上來~ 所謂隔行如隔山~ 術(shù)業(yè)有專攻~ 這內(nèi)容我不懂~ 特來請教這方面的專家~ ( 附件我放上 figure 1, figure 2. 及文字檔 chemistry encrypted9.doc) 我想知道~圖一跟圖二主要是在描述什么內(nèi)容~ 我把文章依段落分成 5 段~ 放上來請專家?guī)兔庹f~ 衷心感謝~ 謝謝~ Invent your own barcode All the coding schemes described herein are afflicted by one handicap or another. Thus while one can only marvel at the baroque elegance of Still’s original coding scheme, he and his colleagues must have sweated blood to get it to work. While less unwieldy, the metallic and optical barcodes, do not, as Still’s scheme does, inextricably link the code to what is on the particle. The digital DNA codes4-6 (see Box) are prone to contamination from templates not intended to be present in the labelling mixture. And so on. In short, there is plenty of room for other ideas. One very simple possibility, suggested by isotope ratios and insect pheromone blends, is to vary rations and insect pheromone blends, is to vary the amounts of just two different substances. This will not lead to very many codes as it stands, but this scheme could be used in the same way that isotope ratios are used to identify the provenance of ancient timbers and samples of cocaine.7,8 There is no reason, either, why different pairs of substances should not be used. Another possibility is to use the alternative configurations, R or S, of an asymmetric centre as the basis for a digital code. It is well known that some complex natural products ca have a significant number of a symmetric centres, and the framework of one of these molecules could be used for coding, with the code residing in a single molecule. Care would be residing in choosing a suitable framework, however, since in some cyclic natural products (eg steroids) ring formation will predispose some asymmetric centres towards one particular configuration. Alternatively, a complex code could be generated by connecting a small number of different monomers in a variety of different ways, in the same manner as branched carbohydrates. Perhaps the scheme with the greatest coding potential, however, is a tiny-dimensional array of several different coloured quantum dots. Fixing four different coloured dots to a 10×10 array, for example, would generate over 2000m patterns. These are just three straightforward examples. I would bet money that there are other miniature barcoding schemes out there waiting to make more jaws drop in astonishment. Acknowledgements: I am grateful to Alan Armstrong for telling me about the Still-Ohlmeyer incident and Michael Natan for telling me about how the metallic barcodes came about. Laurie Peter, Chris Flost and other colleagues in the chemistry department at Batch kindly discussed various aspects of miniature barcodes with me, and Pooja Kumat made helpful comments on the manuscript. 這段致謝詞~就不用翻了~謝謝~ figure 1.JPG figure 2.JPG |
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2013-01-24 10:46:08, 40 K
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2樓2013-01-28 01:54:21
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3樓2013-01-28 08:12:11
chemistry412
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我是學(xué)化學(xué)的，這里有些生物和別的學(xué)科的內(nèi)容，我翻譯的不是很好，水平有限，僅供參考！ 發(fā)明專屬條形碼 All the coding schemes described herein are afflicted by one handicap or another. Thus while one can only marvel at the baroque elegance of Still’s original coding scheme, he and his colleagues must have sweated blood to get it to work. While less unwieldy, the metallic and optical barcodes, do not, as Still’s scheme does, inextricably link the code to what is on the particle. The digital DNA codes4-6 (see Box) are prone to contamination from templates not intended to be present in the labelling mixture. And so on. In short, there is plenty of room for other ideas. 這里提及的所有編碼方案都會被這個(gè)或那個(gè)因素困擾，因此只有Still首創(chuàng)的密碼方案才能有所成就，為此他和他的同事必須全力以赴地工作。但是，金屬和光學(xué)條碼不象Still的方案那樣容易控制，它們像粒子一樣并不緊密相連。數(shù)字DNA密碼4-6容易被模板中未被標(biāo)記的物質(zhì)弄混等等。簡單說，這種方法并不太可靠。 One very simple possibility, suggested by isotope ratios and insect pheromone blends, is to vary rations and insect pheromone blends, is to vary the amounts of just two different substances. This will not lead to very many codes as it stands, but this scheme could be used in the same way that isotope ratios are used to identify the provenance of ancient timbers and samples of cocaine.7,8 There is no reason, either, why different pairs of substances should not be used. 由同位素豐度和不同種昆蟲外激素的混合聯(lián)想到的一種非常簡單的方案：改變同位素的含量和昆蟲外激素的種類，也就是說改變兩種物質(zhì)的含量。這并不會形成太多的密碼，但是這種方法應(yīng)該會很有效，就像利用同位素的豐度可以用來鑒定古木的年代和可卡因的含量一樣適用。任意兩種物質(zhì)均可。 Another possibility is to use the alternative configurations, R or S, of an asymmetric centre as the basis for a digital code. It is well known that some complex natural products ca have a significant number of a symmetric centres, and the framework of one of these molecules could be used for coding, with the code residing in a single molecule. Care would be residing in choosing a suitable framework, however, since in some cyclic natural products (eg steroids) ring formation will predispose some asymmetric centres towards one particular configuration. Alternatively, a complex code could be generated by connecting a small number of different monomers in a variety of different ways, in the same manner as branched carbohydrates. 另一種可能性就是使用一種不對稱中心的不同構(gòu)型，R或S作為基礎(chǔ)或數(shù)字密碼。眾所周知一些復(fù)雜的天然產(chǎn)品有數(shù)目眾多的對稱中心，這個(gè)或這些分子的框架可以被用來標(biāo)記—密碼就存在于分子的結(jié)構(gòu)之中。當(dāng)然要慎重選擇適合的結(jié)構(gòu)：例如在一些可循環(huán)的天然化合物中(如甾族化合物)會有成環(huán)反應(yīng)發(fā)生，這會形成分子的不對稱中心，改變其結(jié)構(gòu)。或者，可以通過不同方法聯(lián)合一定數(shù)目的不同單體來形成復(fù)雜的密碼。例如支化型的糖類的形成。 Perhaps the scheme with the greatest coding potential, however, is a tiny-dimensional array of several different coloured quantum dots. Fixing four different coloured dots to a 10×10 array, for example, would generate over 2000m patterns. 也許這種構(gòu)想是最有前景的編碼方式，但是，它是一定數(shù)目不同顏色量子點(diǎn)的一種小尺度的排列。假設(shè)有四種不同顏色的量子點(diǎn)以10×10方式排列，就可以產(chǎn)生2000種圖案。 These are just three straightforward examples. I would bet money that there are other miniature barcoding schemes out there waiting to make more jaws drop in astonishment. 這里介紹的是3種非常簡單的例子。我預(yù)計(jì)以后會出現(xiàn)令人意想不到的微型的條形碼設(shè)計(jì)方案。 |
4樓2013-01-30 17:13:34
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