Shangqiu Normal University

Integrated characterization of the gut microbiome and metabolome in female Père David’s deer (Elaphurus davidianus) across a reproductive transition

Although the gut microbiota plays a critical role in energy harvesting in ruminants, the restructuring of the microbiome–metabolome axis during the transition from late pregnancy to the postbreeding season remains poorly understood in the endangered Père David’s deer ( Elaphurus...

Hollow Coral-like Black g-C3N4 Nanoparticles for Photothermal-Assisted Photocatalytic Hydrogen Generation

Abstract Graphitic carbon nitride (g-C3N4) is a promising photocatalyst for energy and environmental applications due to its stability and intrinsic activity, but it suffers from limited visible-light absorption and poor light harvesting. Herein, a porous, highly crystalline blac...

Effects of endophytic bacteria on antioxidant enzymes SOD and CAT, root anatomical structure of soybean seedlings under salt stress

To explore the effects of endophytic bacteria on salt tolerance of soybean seedlings and to provide a biological strategy for alleviating salt stress damage in soybean production, ‘Xudou 20’ (a moderately salt-sensitive cultivar widely cultivated in the Huang-Huai-Hai region) was...

Principle of Spacetime Topology Consistency

The standard ΛCDM cosmology relies on the FLRW metric, which admits spatial sections either infinite (flat/open, K=0,−1) or finite (closed, K=+1), while asserting a temporal origin t=0 (Big Bang singularity). This paper argues that the combination of a temporal origin (past timel...

Accuracy of Photoplethysmography-Derived Pulse Rate Variability Compared with Electrocardiography-Derived Heart Rate Variability: A Systematic Review and Meta-Analysis

Photoplethysmography-derived pulse rate variability (PPG-derived PRV) is increasingly used in wearable and camera-based biomedical sensors as a low-burden alternative to electrocardiography-derived heart rate variability (ECG-derived HRV), but its agreement with ECG-derived measu...

Streptomyces Extracellular Vesicles Promote Plant Defence Responses Through Direct Pathogen Inhibition and Immune Activation

Extracellular vesicles (EVs) play a critical role in mediating the transfer of bioactive nucleic acids and proteins between plants and pathogens. However, the involvement of EVs in interactions between plants and beneficial bacteria remains poorly understood. In this study, we is...