Publications by authors named "R Knudsen"

The development of accurate and fast computational procedures for the calculation of X-ray spectroscopies is paramount to facilitate theoretical analysis of modern X-ray experiments on molecules. Herein, we present the extension of Cluster Perturbation theory to comprehend the calculation of core excited states and core ionization potentials using the core-valence separation approximation, which has seen widespread success for various quantum chemistry methods. We derive the theoretical framework for introducing core-valence separation into Cluster Perturbation series for excitation energies and display the performance of the methodology in S(D) orbital excitation spaces.

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Tapeworms of the genus Proteocephalus Weinland, 1858 (Cestoda: Proteocephalidae) are common and widespread intestinal parasites of whitefish (Coregonus spp., Salmonidae: Coregoninae). Previous taxonomic studies, based solely on morphology and inconsistently fixed specimens, concluded that all salmoniform fish, including whitefish, are parasitised by a single euryxenous and highly polymorphic species, Proteocephalus longicollis (Zeder, 1800).

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Article Synopsis
  • The study looks at how whitefish and their parasites affect each other's evolution in lakes in Europe.
  • The researchers found that as different types of whitefish adapted to their environments, it helped the parasites expand and adapt too.
  • They think that the way whitefish eat and their habitats allow parasites to specialize and change over time, but the role of other animals that the parasites use for resources is important too.
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Background: Researchers have found that mindfulness-based interventions can reduce stress and improve mental health in healthcare professionals, as well as support relationship building, communication, and compassionate care. However, few researchers have systematically examined what determines successful implementation in hospital settings, which is essential for integrating research in clinical practice.

Objectives: The aim of this study was to synthesize qualitative data regarding healthcare professionals' experiences of factors affecting implementation of mindfulness in hospital settings and outline recommendations for clinical practice.

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