Broadband Achromatic Quarter-Waveplate Using 2D Hybrid Copper Halide Single Crystals.

Achromatic quarter waveplates (A-QWPs), traditionally constructed from multiple birefringent crystals, can modulate light polarization and retardation across a broad range of wavelengths. This mechanism is inherently related to phase retardation controlled by the fast and slow axis of stacked multi-birefringent crystals. However, the conventional design of A-QWPs requires the incorporation of multiple birefringent crystals, which complicates the manufacturing process and raises costs.

Accuracy of cystatin C-based estimates of glomerular filtration rate in kidney transplant recipients: a systematic review.

Background: As with creatinine, cystatin C can be incorporated into a formula to estimate the glomerular filtration rate (GFR). The overall performance of cystatin C-based equations in kidney transplantation is unclear with conflicting results between studies.

Methods: Systematic review of adult kidney transplant recipients.

Statins are associated with a reduced risk of bone fracture in hemodialysis (HD) patients.

The Dialysis Outcomes and Practice Patterns Study reported a statistically non-significant protective effect of HMG-co reductase inhibitors (statins) on bone fracture risk in hemodialysis (HD) patients. We sought to determine whether statin exposure was associated with reduced risk of bone fracture in our HD population. This was a retrospective cohort study of 174 prevalent HD patients.

Major bleeding in hemodialysis patients.

Background And Objectives: Few studies have examined risk factors for hemorrhage in hemodialysis patients. The contribution of warfarin and antiplatelet agent exposure to the incidence of first major bleeding episodes in hemodialysis patients was determined.

Design, Setting, Participants, & Measurements: Retrospective chart review was performed in eligible hemodialysis patients.