Receiver design for the REACH global 21-cm signal experiment.

We detail the REACH radiometric system designed to enable measurements of the 21-cm neutral hydrogen line. Included is the radiometer architecture and end-to-end system simulations as well as a discussion of the challenges intrinsic to highly-calibratable system development. Following this, we share laboratory results based on the calculation of noise wave parameters utilising an over-constrained least squares approach.

Comparative analysis of PFASs concentrations in fur, muscle, and liver of wild roe deer as biomonitoring matrices.

Background: Recently, environmental pollution has become a significant concern for human, animal, and environmental health, fitting within the "One Health" framework. Among the various environmental contaminants, per- and polyfluoroalkyl substances (PFASs) have gathered substantial attention due to their persistence, bioaccumulation, and adverse health effects. This study aimed to compare the levels of 12 PFASs in the fur, liver, and muscle of wild roe deer to evaluate the feasibility of using fur as a non-invasive biomonitoring matrix.

The impact of adherence counseling incorporating a point of care urine tenofovir assay on virologic suppression among individuals failing tenofovir-lamivudine-dolutegravir: A pre-post intervention study.

Objectives: To examine if point-of-care (POC) urine tenofovir testing-informed counseling could be used to improve virologic suppression (VS) among participants with virologic failure (VF) after ≥1 prior round of enhanced adherence counseling (EAC).

Methods: Participants were enrolled from 42 clinics across Namibia. At each monthly medication pick-up, participants completed the POC urine test and received EAC informed by this testing (EAC+).

The first interneuron of the mouse visual system is tailored to the natural environment through morphology and electrical coupling.

The topographic complexity of the mouse retina has long been underestimated. However, functional gradients exist, which reflect the non-uniform statistics of the visual environment. Horizontal cells are the first visual interneurons that shape the receptive fields of down-stream neurons.