Biomarkers in coronary artery disease: systematic review and meta-analysis.

Introduction: Little information exists regarding the detection of early coronary heart disease protein biomarkers. The aim of this study was to investigate several potential candidates.

Methods: Systematic review was carried out followed by meta-analysis.

Optimizing nurse practitioner productivity within the Veterans Health Administration.

Background: Nurse practitioners (NPs) provide high-quality, comprehensive health care at Veterans Health Administration (VHA) medical centers in various practice settings. Accurately determining the productivity of NPs is essential to understanding their overall contribution to veteran care. There is a lack of understanding of the contributors to the variability among VHA medical centers regarding their processes for capturing these data.

IPCC Emission Factor Overestimates NO Emissions from Agricultural Ditches.

Agricultural ditches emit disproportionate amounts of nitrous oxide (NO), but their contributions to regional or global NO emissions remain unclear due to limited data. The Intergovernmental Panel on Climate Change (IPCC) recommends using emission factors (EFs) to estimate indirect NO emission, but the EF for ditches (EF) is categorized as groundwater, which potentially introduces a significant bias. This study conducted a regional-scale campaign in the North China Plain, one of the world's most intensive agricultural regions, and calculated the EF values from agricultural ditches by the concentration method (NO-N/NO-N).