Publications by authors named "K K Sand"
Article Synopsis
- Fast radio bursts (FRBs) are brief bursts of radio waves from distant galaxies, and their emission mechanisms are still debated, focusing on processes near a central engine versus shocks at large distances.
- Researchers measured two scintillation scales for FRB 20221022A, one linked to the Milky Way and the other to its host galaxy, which allowed them to determine the FRB's emission region size to be less than 3 x 10 kilometers.
- This size contradicts the large-distance model and suggests that the emission likely occurs close to a central compact object, supported by an observed S-shaped polarization angle, indicating a magnetospheric emission process.
Article Synopsis
- Fast radio bursts (FRBs) are intense signals from deep space that last for milliseconds and share some characteristics with pulsars, suggesting they may originate from neutron stars.
- Despite similarities, FRBs like 20221022A display different patterns in their linear polarization position angle (PA), particularly a 130° rotation that aligns with pulsar behaviors, hinting at magnetospheric origins.
- This study rules out short-period pulsars as potential sources for FRB 20221022A, supporting the idea that its unique PA evolution fits the rotating vector model commonly used for pulsars.
Horizontal gene transfer is one of the most important drivers of bacterial evolution. Transformation by uptake of extracellular DNA is traditionally not considered to be an effective mode of gene acquisition, simply because extracellular DNA is degraded in a matter of days when it is suspended in e.g.
View Article and Find Full Text PDFIn this scoping review, we summarize the current knowledge of cognitive functioning in adults with cerebral palsy (CP), and identify the neuropsychological tests typically used in this population. 39 studies from the period January 1990 - August 2023 were included in the review, and they differ widely in their aims and approach to studying cognition. Very few studies have cognitive assessment as their core aim and use a neuropsychological test battery.
View Article and Find Full Text PDFIncorporating a Psychiatric Telehealth Simulation in a Family Nurse Practitioner Curriculum.
Issues Ment Health Nurs
April 2024
The prevalence of mental health disorders in primary care is high and challenges related to the COVID pandemic warrant further training of the family nurse practitioner. A telehealth simulation learning experience that included common primary care diagnoses in mental health-general anxiety, depression, and substance use disorder-was incorporated into a non-clinical behavioral health course. Formative evaluation provided by licensed nurse practitioners confirmed the need for improving interviewing techniques, engaging clients, and promoting safety among this population.
View Article and Find Full Text PDF