Wastewater Surveillance for SARS-CoV-2 RNA in Canada

Wastewater surveillance for SARS-CoV-2 RNA is a relatively recent adaptation of long-standing wastewater surveillance for infectious and other harmful agents.Individuals infected with COVID-19 were found to shed SARS-CoV-2 in their faeces.Researchers around the world confirmed that SARS-CoV-2 RNA fragments could be detected and quantified in commun

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A gluing operator for the ambitwistor string

Abstract We present a new operator in the ambitwistor string which glues together correlators with fewer points or of lower genus.It underpins the ORG ALPHABET SOUP recursive construction of tree-level CHY scattering amplitudes by Dolan & Goddard, as well as the computation of loop integrands on a Riemann sphere by Geyer et al.The gluing operator i

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