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  1. Fulltext Bullying behavior and mental health among college students in Sichuan, China: a cross-sectional study
    Jing Y, Cao R, Yang D, Liu Y, Zhang J, Hui H, et al.
    Front Public Health, 2026;14:1889019.
    PMID: 42935642 DOI: 10.3389/fpubh.2026.1889019
    BACKGROUND: Bullying is a known risk factor for poor mental health in adolescents. Although bullying research has largely focused on adolescent populations, college students represent a distinct group warranting dedicated attention. They shoulder unique developmental tasks including academic competition and career preparation, and exhibit behavioral characteristics of frequent engagement with digital platforms. This study examined the prevalence of bullying and its associations with depression, anxiety, and post-traumatic stress disorder (PTSD).

    METHODOLOGY: A cross-sectional survey was conducted among 1,120 students from August 18 to September 10, 2025. We recruited participants from a single college through class-based online channels using convenience sampling. Standardized scales assessed bullying experiences, anxiety, depression, PTSD symptoms, and psychological resilience.

    RESULTS: A total of 241(21.5%) students reported being bullied, and 101(9.0%) reported bullying others. Mann-Whitney U tests showed no significant effects of age and ethnicity on the four mental health indicators (all p > 0.05). Gender and family residence groups exhibited statistically significant differences in GAD-7 and PHQ-9 scores; additionally, family residence groups differed in CD-RISC-25 scores (p 

  2. Broadband Nonlinear Photonics in Few-Layer Borophene
    Ma C, Yin P, Khan K, Tareen AK, Huang R, Du J, et al.
    Small, 2021 Jan 27.
    PMID: 33502109 DOI: 10.1002/smll.202006891
    In this paper, 2D borophene is synthesized through a liquid-phase exfoliation. The morphology and structure of as-prepared borophene are systemically analyzed, and the Z-scan is used to measure the nonlinear optical properties. It is found that the saturable absorber (SA) properties of borophene make it serve as an excellent broadband optical switch, which is strongly used for mode-locking in near- and mid-infrared laser systems. Ultrastable pulses with durations as short as 792 and 693 fs are successfully delivered at the central wavelengths of 1063 and 1560 nm, respectively. Furthermore, stable pulses at a wavelength of 1878 nm are demonstrated from a thulium mode-locked fiber laser based on the same borophene SA. This research reveals a significant potential for borophene used in lasers helping extending the frontiers of photonic technologies.
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