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Objective: The present study aimed to model the structural relationships between personality traits (neuroticism and openness) and mental health with the mediating role of social support among students. Methods and Materials: The research method was fundamental in terms of purpose and correlational in terms of method, specifically using structural equation modeling. The statistical population included all students of Islamic Azad University, Sari branch, in the 2023-2024 academic year, totaling 5,400 individuals. Using Kline's method and a non-random (available) sampling method, 269 individuals were selected as the sample. After explaining the research by the investigator and obtaining the respondents' willingness to participate, the NEO Five-Factor Inventory (NEO-FFI) (McCrae & Costa, 1992), the 28-item General Health Questionnaire (GHQ-28) (Goldberg, 1972), and the Perceived Social Support Questionnaire (Zimet, 1988) were administered. For data analysis, both descriptive (dispersion index, central tendency index, mean, and standard deviation, data normalization) and inferential (structural equations) statistical methods were used. Findings: The results showed that the two personality traits of neuroticism and openness have a direct effect on mental health. Additionally, the personality traits of openness and neuroticism have an indirect effect on mental health through the mediation of social support. Furthermore, the findings indicated that 59% of mental health can be explained by personality traits and social support in direct and indirect pathways (R² = 0.59). Specifically, the personality trait of neuroticism has a 31% direct effect on mental health, and neuroticism with the mediation of social support has a 37% indirect effect on mental health among students. The findings also showed that 12% of mental health can be explained by the variables of neuroticism and social support in direct and indirect pathways (R² = 0.12). Additionally, the results indicated that the personality trait of openness has a 15% direct effect on mental health, and openness with the mediation of social support has a 26% indirect effect on mental health among students. The findings further suggested that 3% of mental health can be explained by the variables of extraversion and social support in direct and indirect pathways (R² = 0.03). Conclusion: The results indicated that the personality traits of neuroticism and openness have a significant direct effect on mental health; and that these traits, through the mediating role of social support, have an indirect effect on mental health. [ABSTRACT FROM AUTHOR]

In this study, Al2O3/GAC (granular activated carbon) composite was prepared and used in the catalytic ozone process (COP) to degrade hydrochlorothiazide (HCTZ). Regarding SEM, EDAX, XRF, FTIR, and BET analysis, the coated alumina on the GAC surface was identified and confirmed. The Al2O3/GAC composite is completely resistant to ozone, and its efficiency in the degradation of HCTZ is almost constant after 20 uses in the catalytic ozonation process COP (93 ± 1%). The Al2O3/GAC composite has increased the efficiency of the ozonation process by 48% under optimal operating conditions and a reaction time of 5 min. Also, Al2O3/GAC under optimal operating conditions and reaction time of 15 min has increased the efficiency of the ozonation process in removing HCTZ, degradation of HCTZ, and removing COD and TOC by 23%, 19%, 24%, and 15%. The kinetics of HCTZ degradation in COP and the single ozonation process (SOP) were consistent with pseudo-first-order kinetics (R2 > 0.99). The rate of HCTZ degradation reactions in COP with Al2O3/GAC is about 2.78 times faster than the rate of SOP. The formation of free radicals in ozone catalysts with alumina is confirmed in addition to surface radicals. For the first time in this study, the degradation pathways of HCTZ in COP were identified. The Al2O3/GAC composite can be used as an inexpensive, recyclable, and efficient catalyst in the chemical degradation of various drug compounds in COP. [ABSTRACT FROM AUTHOR]