HODGSON / SIMS: Time to vote to abolish the Senate

We’re sharing this article early to provide faster access to peer-reviewed, accepted research. It is citable and carries a permanent DOI. This version is subject to further edits and will be replaced automatically by the final Version of Record. All legal disclaimers apply. AbstractMany biologically important molecules are structural isomers that share the same molecular mass yet differ in shape, bonding and function. This creates an ambiguity for mass spectrometry imaging (MSI), where chemically distinct species can be indistinguishable on the mass-to-charge (m/z) scale and therefore cannot be reliably mapped in heterogeneous materials. Here we demonstrate that Orbitrap secondary ion mass spectrometry (OrbiSIMS) can provide an orthogonal contrast that enables both identification and spatial separation of isomeric molecules directly on surfaces. By exploiting structure-dependent secondary-ion dissociation and gas-phase collisional effects during ion transmission, we discriminate isomeric trisaccharides raffinose, maltotriose and melezitose and spatially resolve raffinose and maltotriose in mixtures.

The Sims 4's Marketplace and user-created content have officially arrived on consoles, a little over a month after their debut on PC. The Sims 4 players on PlayStation and Xbox have now caught up to their friends on PC, at least when it comes to the game’s Marketplace. This new feature is essentially a hub for paid mods and other user-created content.

The federal government prepared to deploy 30,000 Canadian troops amid fears the arrival of the year 2000 could cripple essential services, shut down public transit and leave northern communities…

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