Study on energy evolution and fractal characteristics of sandstone with different fracture dip angles under uniaxial compression.

In order to investigate the failure modes and instability mechanism of fractured rock. Uniaxial compression tests were conducted on sandstone specimens with different dip angles. Based on rock energy dissipation theory and fractal theory, the energy evolution characteristics and fragmentation fractal characteristics in the process of deformation and failure of specimens were analyzed.

Public health and social entrepreneurs as activators of equitable health ecosystems.

Objectives: To describe approaches that public health and social entrepreneurs take to address health equity, and identify strategies for equitable collaborations with these entrepreneurs.

Methods: We leveraged data from semi-structured interviews, conducted August to October 2022, with 20 public health and social entrepreneurs who focus on drivers of health and health equity. Two researchers employed content analysis, guided by a prior framework.

Natural-human driving factors of groundwater salinization in a long-term irrigation area.

Salinization of groundwater is a major challenge for groundwater management in long-term irrigation areas, decoupling its complex influencing factors can provide insights for the sustainable development of irrigation areas. In this study, the natural-human driving factors of groundwater salinization in the Yinchuan Plain, a typical irrigated area, were identified using isotope analysis, information entropy, and self-organizing map. Results show that groundwater in the study area is seriously salinized with obvious spatial heterogeneity.

Characterization of soil salinization and its driving factors in a typical irrigation area of Northwest China.

Salinization of irrigation areas is a global environmental challenge. The uncertainty in the distribution of salinization is increased by the complexity of the natural environment. This study adopted Yinchuan Plain as a typical irrigation area to study the relationship between soil salinity and the environment from the perspective of macro-environmental elements and micro-ion composition.

[Distribution of influenza A (H5N1) virus and pathological lesions in major organ tissues of experimentally infected rhesus macaques].

Objective: To investigate the pathological changes and viral invasion in the main organs of rhesus macaques after experimental infection with H5N1 virus.

Methods: The rhesus macaques were infected with H5N1 virus (AF148678/ACGoose/Guangdong/11961H5N1) by nasal inoculation under anesthesia. One rhesus macaque was killed respectively at 1, 3, 6, 14 days after infection.