7. венок из Идеи того, что можно сделать для сада из. новый генератор для днепра - Лагодження, обслуговування, тюнінг і т.п. - UAMOTO [moto] (Україна. Что представляет собой реле-регулятора Из-за сложной Можно ли сделать 4,5/5(2). Можно ли сдать ЕГЭ без Один из сервисов онлайн-репетиторов Tutoronline представляет собой. 21/12/ · ScienceDaily. ScienceDaily, 'Glue' that makes plant cell walls strong could hold the key to wooden skyscrapers. ScienceDaily. Retrieved June 6.
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Molecules 10, times narrower than the width of a human hair could hold the key to making possible wooden skyscrapers and more energy-efficient paper production, according to research published in the journal Nature Communications. The study, led by a father and son team at the Universities of Warwick and Cambridge, solves a long-standing mystery of how key sugars in cells bind to form strong, indigestible materials.
They play a key role in determining the strength of materials and how easily they can be digested. What we found was that cellulose induces xylan to untwist itself and straighten out, allowing it to attach itself to the cellulose molecule.
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The finding was made possible due to an unexpected discovery several years ago in Arabidopsis, a small flowering plant related to cabbage and mustard. Professor Dupree and colleagues showed that the decorations on xylan can only occur on alternate sugar molecules within the polymer -- in effect meaning that the decorations only appear on one side of xylan.
This led the team of researchers to survey other plants in the Cambridge University Botanic Garden and discover that the phenomenon appears to occur in all plants, meaning it must have evolved in ancient times, and must be important. To explore this in more detail, they turned to an imaging technique known as solid state nuclear magnetic resonance ssNMR , which is based on the same physics as hospital MRI scanners, but can reveal structure at the nanoscale.
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However, while ssNMR can image carbon, it requires a particular heavy isotope of carbon, carbon This meant that the team had to grow their plants in an atmosphere enriched with a special form of carbon dioxide -- carbon dioxide. Understanding how cellulose and xylan fit together could have a dramatic effect on industries as diverse as biofuels, paper production and agriculture, according to Paul Dupree.
A better understanding of the relationship between cellulose and xylan could help us vastly reduce the amount of energy required for such processes.
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But just as this could improve how easily materials can be broken down, the discovery may also help them create stronger materials, he says. There are already plans to build houses in the UK more sustainably using wood, and Paul Dupree is involved in the Centre for Natural Material Innovation at the University of Cambridge, which is looking at whether buildings as tall as skyscrapers could be built using modified wood.
Materials provided by University of Cambridge.
The original story is licensed under a Creative Commons License. Note: Content may be edited for style and length. Science News. Story Source: Materials provided by University of Cambridge.
Journal Reference : Thomas J. Simmons, Jenny C.
Mortimer, Oigres D. Brown, Eduardo R.
Можно ли сдать ЕГЭ без репетитора
Folding of xylan onto cellulose fibrils in plant cell walls revealed by solid-state NMR. Nature Communications , ; 7: DOI: ScienceDaily, 21 December University of Cambridge. Retrieved June 25, from www.
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The new approach uses The study results revolve around the delicacy of DNA Below are relevant articles that may interest you. ScienceDaily shares links with scholarly publications in the TrendMD network and earns revenue from third-party advertisers, where indicated.
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