1. Ramping down a clinical 3 T scanner: a journey into MRI and MRS at 0.75 T 

   Guenthner, Christian; Peereboom, Sophie Marie; Dillinger, Hannes; et al. (2023)

   Magnetic Resonance Materials in Physics, Biology, and Medicine

   ObjectLower-field MR is reemerging as a viable, potentially cost-effective alternative to high-field MR, thanks to advances in hardware, sequence design, and reconstruction over the past decades. Evaluation of lower field strengths, however, is limited by the availability of lower-field systems on the market and their considerable procurement costs. In this work, we demonstrate a low-cost, temporary alternative to purchasing a dedicated ...

   Journal Article

2. A Randomized Trial of Intra-articular Injection Therapy for Knee Osteoarthritis 

   Tschopp, Marcel; Pfirrmann, Christian W. A.; Fucentese, Sandro F.; et al. (2023)

   Investigative Radiology

   Background Intra-articular injections are widely used for conservative treatment of knee osteoarthritis (OA). However, rigorous data are lacking regarding the comparative therapeutic effectiveness of these injections.Purpose The aim of this study was to compare clinical outcomes after intra-articular injections of glucocorticoid, hyaluronic acid, platelet-rich plasma (PRP), or placebo in patients with mild or moderate OA of the knee.Materials ...

   Journal Article

3. Extreme Surface Energy Budget Anomalies in the High Arctic in Winter 

   Murto, Sonja; Papritz, Lukas; Messori, Gabriele; et al. (2023)

   Journal of Climate

   In recent decades, the Arctic has warmed faster than the global mean, especially during winter. This has been attributed to various causes, with recent studies highlighting the importance of enhanced downward infrared radiation associated with anomalous inflow of warm, moist air from lower latitudes. Here, we study wintertime surface energy bud-get (SEB) anomalies over Arctic sea ice on synoptic time scales, using ERA5 (1979-2020). We ...

   Journal Article

4. Pollen limitation and context-dependent alleviating mechanisms in a co-flowering alpine grassland community 

   Wang, Yuxian; Gao, Erliang; Hou, Meng; et al. (2023)

   Oikos

   The consequences of community metrics (e.g. co-flowering diversity and floral density) and plant traits (e.g. pollinator dependency and trait similarity) on pollen limitation (PL) may depend on pollinator-mediated competitive or facilitative interactions among plants in co-flowering communities, which could vary with community contexts (i.e. different altitude communities) and under human disturbances (e.g. livestock grazing). However, ...

   Journal Article

5. Ring-Polymer Instanton Tunneling Splittings of Tropolone and Isotopomers using a ?-Machine Learned CCSD(T) Potential: Theory and Experiment Shake Hands 

   Nandi, Apurba; Laude, Gabriel; Khire, Subodh S.; et al. (2023)

   Journal of the American Chemical Society

   Tropolone, a 15-atom cyclic molecule, has received much interest both experimentally and theoretically due to its H-transfer tunneling dynamics. An accurate theoretical description is challenging owing to the need to develop a high-level potential energy surface (PES) and then to simulate quantum-mechanical tunneling on this PES in full dimensionality. Here, we tackle both aspects of this challenge and make detailed comparisons with ...

   Journal Article

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