The inhibitory effect of Hypericum japonicum on H9N2 avian influenza virus.

The H9N2 subtype of avian influenza virus (AIV) causes severe immunosuppression and high mortality in view of its frequent co-infection with other pathogens, resulting in significant economic losses in the poultry industry. Current vaccines provide suboptimal immune protection against H9N2 AIV owing to antigenic variations, highlighting the urgent need for safe and effective antiviral drugs for the prevention and treatment of this virus. This study aimed to investigate the inhibitory effects of Hypericum japonicum extract on H9N2 AIV.

Impact of Initial Heart Rate, Diastolic Pressure, and Pulse Pressure on Prognostic Outcomes in Heart Failure Patients with Mildly Reduced Ejection Fraction.

Background: Heart rate, diastolic pressure, and pulse pressure are key modifiable factors influencing heart failure prognosis. While heart failure with mildly reduced ejection fraction (HFmrEF) is a distinct subgroup of heart failure, the prognostic impact of these hemodynamic parameters in this population remains unclear, necessitating focused investigation. This study aims to elucidate their effects on HFmrEF patient outcomes.

The impact of carbon emissions trading on green total factor productivity based on evidence from a quasi-natural experiment.

Based on a balanced panel dataset of 272 prefecture-level cities from 2000 to 2022, this paper systematically investigates the impact of the carbon emissions trading system on green total factor productivity and its underlying mechanisms from an integrated perspective of overall, dynamic, and spatial dimensions. The findings reveal that (1) the carbon emissions trading system significantly enhances regional total factor productivity, primarily by optimizing resource allocation efficiency and strengthening regional competitiveness. (2) From a dynamic perspective, the policy effect exhibited a U-shaped relationship: from 2013 to 2018, green total factor productivity was suppressed due to underdeveloped market mechanisms and the policy environment; after 2018, with market maturation and policy stabilization, the policy effects improved significantly.

Molecular Uranium Dioxide-Mediated CO Photoreduction.

The reduction of CO mediated by transition metals has garnered significant interest, yet little is known about the reduction of CO using f-element compounds. Herein, the reduction of CO to CO by tetravalent uranium (U) compound UO is investigated via matrix isolation infrared spectroscopy and quantum chemical study. Our results reveal that a stable carbonate intermediate OUCO () can be prepared at low temperatures (4-12 K).