Category: 6. Chemistry
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New pipeline makes valuable organic acid from plants—saving money and emissions
by Julie Wurth, University of Illinois at Urbana-Champaign Institute for Sustainability, Energy, and Environment Credit: Center for Advanced Bioenergy and Bioproducts Innovation (CABBI) In a breakthrough for environmentally friendly chemical production, researchers at the Center for Advanced Bioenergy and Bioproducts Innovation (CABBI) have developed an economical way to make succinic acid, an important industrial chemical,…
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New understanding of perfluorooctanoic acid could pave the way towards safer products and better human health
Graphical abstract. Credit: Environmental Science & Technology (2023). DOI: 10.1021/acs.est.2c05642 A team of A*STAR scientists has made a significant breakthrough in understanding how perfluorooctanoic acid (PFOA) is processed by the human body. Led by Dr. James Chan, Junior Principal Investigator at A*STAR’s Singapore Institute of Food and Biotechnology Innovation (SIFBI) and the A*STAR Skin… Continue…
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Instanton theory extended to describe quantum tunnelling through a conical intersection | Research
Theoreticians have developed a new method for calculating molecular transition rates on non-trivial energy landscapes. Their slimline approach not only reduces intractable many-body mechanics to manageable computations, but also lets them quantify the individual phenomena that assist or hinder transitions.1 Many-body quantum mechanics forms the mathematical basis for understanding molecular behaviour. But while it is…
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Ultrafast light pulses scoop Nobel prize in physics | News
The 2023 Nobel prize in physics has been awarded to Pierre Agostini, Ferenc Krausz and Anne L’Huillier for their work on techniques that enable scientists to track the movement of electrons on ultrafast timescales. The Nobel committee that picked the winners cited the trio’s work on ‘experimental methods that generate attosecond pulses of light for…
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Play along with our Nobel prize announcement bingo
The announcement will be live here on Wednesday, 4 October, 10:45 BST (at the earliest). Watch live and join in with our Nobel prize bingo. The bingo card below is randomly generated, so is likely to be unique to you – this means you can play along with friends. While you’re watching, click any…
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US regulator says phenylephrine is ineffective as a decongestant | Business
On 14 September, the US Food and Drug Administration’s (FDA) non-prescription drug advisory committee (NDAC) unanimously agreed that orally administered phenylephrine does not work as a nasal decongestant. The decision kicks off a long process of consultation on the drug’s continued use. Phenylephrine is included in hundreds of over-the-counter (OTC) cold and flu remedies worldwide,…
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Doubly oxidised carbene tests the limits of the octet rule | Research
An unprecedented four-electron carbon intermediate has been isolated and characterised by researchers in the US. The team used a two-step approach to remove the non-bonding electrons from a stable carbene intermediate to create a crystalline doubly oxidised carbene. Carbenes were first discovered at the beginning of the 20th century but their extreme reactivity made them…
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Fabrication and characterization of a novel catalyst based on modified zirconium metal-organic-framework for synthesis of polyhydroquinolines
Domling, A., Wang, W. & Wang, K. Chemistry and biology of multicomponent reactions. Chem. Rev. 112, 3083–3135 (2012). Article PubMed PubMed Central Google Scholar Maleki, A., Panahzadeh, M. & Eivazzadeh-keihan, R. Agar: A natural and environmentally-friendly support composed of copper oxide nanoparticles for the green synthesis of 1, 2, 3–triazoles. Green Chem. Lett. Rev. 12,…
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Molecular data storage using direct analysis in real time (DART) ionization mass spectrometry for decoding
In a previous study, we found that DART-MS is particularly suitable for the detection of nicotine22. As shown in Fig. 1, nicotine adsorbed on the surface of various objects from air polluted with tobacco smoke can be detected with high sensitivity and intensity by the DART ion source. Figure 1 DART-MS spectrum of a piece of…
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Cells solved the Gibbs paradox by learning to contain entropic forces
Figure 2 describes a binary mechanical system that accounts for many mechanical, chemical and energetic aspects of muscle contraction7,8. In Fig. 2A, actin filament binding induces a conformational change in myosin (a structural lever arm rotation) that displaces the actin filament a distance d9,10. For continuity with Fig. 1, a hypothetical fluorophore bound to myosin changes color from…