Publications by authors named "A D Christianson"
Article Synopsis
- A retrospective cohort study aimed to compare three socioeconomic status (SES) indexes and their association with outcomes after anterior cervical discectomy and fusion (ACDF) or lumbar fusion.
- The study involved identifying adult patients who underwent these surgeries at a medical center from 2014 to 2020, analyzing their preoperative conditions and outcomes based on SES classifications derived from community-level indexes.
- Results indicated that while patients from lower SES communities had worse preoperative outcomes, the community-wide SES indexes were ineffective in predicting surgical outcomes post-surgery.
CoSn and FeSn, two kagome-lattice metals, have recently attracted significant attention as hosts of electronic flat bands and emergent physical properties. However, current understandings of their physical properties are limited to knowledge of the average crystal structure. Here, we report the Fe-doping induced coemergence of the antiferromagentic (AFM) order and local symmetry breaking in (CoFe)Sn.
View Article and Find Full Text PDFObjective: Neural tube defects (NTD) are serious, life-threatening birth defects. Staple food fortification with folic acid (vitamin B) is a proven, effective intervention to reduce NTD birth prevalence. Mandatory food fortification with folic acid was implemented in South Africa (SA) in 2003.
View Article and Find Full Text PDFCommunity genetic services were introduced in South Africa almost seven decades ago, with medical geneticists and genetic counsellors being formally recognized for the past 30 years. Initial training platforms were established at academic centres countrywide, and posts for relevant healthcare professionals, including medical geneticists and genetic counsellors were created in the public sector. Despite these early advances, the number of these specialists required to address the rising burden of congenital disorders in the country remains far below required targets established by the National Department of Health.
View Article and Find Full Text PDFArticle Synopsis
- The S=1/2 triangular lattice antiferromagnet (TLAF) model showcases complex quantum magnetic behavior influenced by exchange anisotropy, specifically in BaLaCoTeO (BLCTO), which shows 120° magnetic order below 3.26K.
- Using inelastic neutron scattering (INS) and advanced calculations, the study identified strong easy-plane XXZ anisotropy and observed a significant energy continuum in spin excitations that indicates a confinement length much larger than the lattice spacing.
- The findings suggest a connection between the excitation spectrum's unique characteristics and higher-order van Hove singularities, providing valuable insights into anisotropic magnetic systems.