Henan Normal University

This study explores how students' help-seeking behaviors are shaped by their Psychological Capital (PsyCap) and perceived social support amidst the structural challenges they face.

Using a qualitative approach, we analyzed semi-structured interviews with 30 students from a Chinese university. Themes related to internal resources (e.g., resilience, hope, self-efficacy, optimism) and external resources (e.g., support from peers and family) were identified through thematic analysis.

The findings suggest that students experiencing mental health difficulties often rely on their PsyCap and social support networks, such as peers and family, to cope. However, significant barriers such as stigma and a lack of mental health literacy hinder effective help-seeking. Moreover, the study highlights the influence of academic stress and environmental pressures on students' mental health and on their use of cognitive and emotional regulation strategies.

These findings call for the development of mental health literacy programs that integrate PsyCap and social support elements to foster better help-seeking behaviors and improve mental health outcomes. Such programs can facilitate access to mental health services and contribute to a healthier academic environment.

As important equine parasites, strongylid nematodes can cause severe health impairments and economic losses in the livestock industry. Current control strategies primarily rely on anthelmintic drugs. Therefore, elucidating the characteristics of its mitochondrial genomes not only clarifies the evolutionary mechanisms of strongylid nematodes but also provides a molecular-level theoretical basis for developing environmentally adaptive control strategies. In this study, the complete mitochondrial genome of Coronocyclus coronatus was sequenced and analyzed using next-generation sequencing technology. Results revealed a 13,870 bp circular double-stranded molecule containing 12 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and 2 non-coding regions, with a high AT content (74.75%) indicating significant AT bias. Among the 12 protein-coding genes, ATT, TTG, and ATA served as start codons. All genes terminated with complete TAA or TAG stop codons, except for COX3 which used an incomplete T stop codon. Phylogenetic analysis revealed closer affinity of C. coronatus with Cylicocyclus than with other Coronocyclus species. This study enriches mitochondrial genome data for strongylid nematodes, providing a foundation for resolving the taxonomic status and molecular evolution of Strongylidae.

Cadmium (Cd) in river sediments poses serious ecological and health risks due to its persistence and bioaccumulation potential. Bio-induced mineralization effectively promotes the formation of Cd doped secondary minerals, a process that is highly susceptible to environmental factors which can alter the final mineral output. This work systematically investigated the influence of common environmental anions (CO₃^2-, SO₄^2-, NO₃^-, Cl^-) on cadmium immobilization within this syntrophic system of phosphate solubilizing bacteria (PSB) and dissimilatory iron reducing bacteria (DIRB). Results indicated that carbonate enhanced the rate of iron reduction but suppressed phosphate release, leading to a reduction in crystalline iron oxides bound Cd (F5) to 2%∼6%. However, CO₃^2- facilitated the formation of CdCO₃, which lowered the free Cd concentration to 6%∼12%. Sulfate inhibited both iron reduction and phosphate release through the formation of Fe(II)-SO₄ complexes that adsorbed onto iron oxide surfaces, thereby restraining vivianite formation and decreasing F5 to 5%∼10%. Nitrate was preferentially reduced to toxic nitrite, which suppressed microbial activity and diminished both iron reduction and phosphate release. As a result, F5 dropped sharply to just 1%. Chloride increased salinity, which impaired PSB growth and phosphate release, while also promoting the adsorption of Fe²⁺ onto mineral surfaces, further inhibiting iron reduction and reducing F5 to 2%∼8%. Multiple characterization results reveal the immobilization of cadmium through adsorption, co-precipitation, and structural incorporation into secondary minerals. Different anions affect Cd immobilization through distinct mechanisms, with carbonate promoting Cd fixation. These findings establish a theoretical basis for applying this remediation strategy under diverse environmental contexts.