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Background Previous studies have shown that prolonged time spent on screen-based sedentary behavior was significantly associated with lower health status in children, independent of physical activity levels. The study aimed to explore the individual and environmental correlates of screen time (ST) among 8–19-year-old students in China. Methods The study surveyed ST using a self-administered questionnaire in Chinese students aged 8–19 years; 1063 participants were included in the final analysis. Individual and environmental correlates of ST were assessed using a mixed-effects model (for continuous outcome variables) and multiple logistic regression model (for binary outcome variables). Results Prolonged ST was observed in 14.7% of boys and 8.9% of girls. Of the ST, weekend and mobile phone/tablet use represented 80% and 40%, respectively. A positive relationship was observed between media accessibility and ST in both boys and girls ( p < 0.05), whereas the presence of parents/others while using screens was a negative factor for longer ST ( p < 0.05). Among the assessed correlates, access to a television (TV) in students’ bedrooms was associated with prolonged total and weekend ST ( p < 0.05 and p < 0.001, respectively). However, spending time on a mobile phone/tablet or a computer rather than viewing a TV, along with increased media accessibility, increased ST. Conclusions These results indicate that greater media accessibility was positively associated and the presence of parents/others was negatively associated with prolonged ST in both Chinese boys and girls. Development of new and effective strategies against prolonged ST are required, especially for small screen device-based ST on weekends.

The Zhunuo ore district, at the western end of the Gangdese porphyry Cu belt, hosts significant Cu mineralization and newly recognized W mineralization dominated by scheelite. However, the genetic relationship between scheelite and porphyry mineralization, and the evolution of ore-forming fluids remain poorly constrained. To address this, scheelite samples from multiple locations were analyzed for major elements (EMPA), in situ trace elements (LA-ICP-MS), and internal textures (cathodoluminescence, CL). These data, combined with machine learning methods, were used to determine scheelite genetic types and reconstruct fluid evolution. REE patterns and CL textures reveal three scheelite generations in Yalongri (early Sch I c, middle Sch I b, late Sch I a), two in Zhigunong (early Sch II a, late Sch II b), and one in Xiongbaxi (Sch III). Low Na (0–329 ppm) and Nb (3.9–39 ppm) relative to high ΣREE + Y-Eu (16–3857 ppm), indicate that the dominant substitution mechanism is 3Ca2+ = 2REE3+ + □Ca (□Ca = Ca vacancy). δEu values > 1 in Sch I a, Sch I b, Sch II a, and Sch II b indicate reducing fluids, whereas δEu < in Sch I c and Sch III reflects oxidizing conditions. Variations in REE, Mo, and Sr contents suggest that ore-forming fluids in Yalongri evolved from oxidizing to reducing conditions, with late-stage scheelite undergoing dissolution–reprecipitation. Zhigunong records two reducing stages: an early REE-rich-Mo-poor stage and a later REE-poor-Mo-rich stage. Xiongbaxi records a single oxidizing, REE-rich, Mo-rich stage. Scheelite exhibits low-to-moderate Sr/Mo ratios (0.02–6.10), consistent with a magmatic–hydrothermal origin, and relatively uniform Y/Ho ratios (12–59) indicating stable crystallization conditions. A Random Forest model classifies scheelite into orogenic, porphyry, skarn, and greisen types. Overall, the results indicate that ore-forming fluids evolved from oxidizing to reducing conditions, favoring metal transport and enrichment. Integrated geochemical and machine learning evidence suggest, strong potential for porphyry-type Cu-W(-Mo) mineralization in Yalongri and Zhigunong, and skarn-type W-Mo mineralization in Xiongbaxi, providing important guidance for future exploration in the western Gangdese metallogenic belt.

Background Subjective socioeconomic status (SES), an individual’s beliefs about his or her social class, is anticipated to be related to future orientation. This study proposed a moderation model to examine the relationship between subjective SES on future orientation and the protective role of low fatalism. Methods Two studies were conducted to test the proposed model. Specifically, in Study 1, the structured questionnaires were administered to a sample comprising 217 Chinese participants (192 females, M age = 18.24 ± 0.63). In Study 2, the structured questionnaires and an Imaginative Scenario Test were administered to collect data among 244 Chinese participants (167 females, M age = 18.44 ± 0.73). Regression analyses were used to explore the moderating role of fatalism in the association between subjective SES on future orientation. The Bootstrap methods were used to test the significance of these moderating effects. Results The results revealed two primary findings: (1) Fatalism moderated the pathway from subjective SES to future orientation. Specifically, low fatalism served as a protective factor, making low subjective SES less disruptive to their future orientation. (2) The moderating effect was primarily attributed to the “luck dimension”, which was the belief that luck plays a pivotal role in determining one’s fate. Conclusions The findings contribute to enriching the current understanding of the subjective SES on future orientation and the protective role of low fatalism.

The Zhunuo ore district, at the western end of the Gangdese porphyry Cu belt, hosts significant Cu mineralization and newly recognized W mineralization dominated by scheelite. However, the genetic relationship between scheelite and porphyry mineralization, and the evolution of ore-forming fluids remain poorly constrained. To address this, scheelite samples from multiple locations were analyzed for major elements (EMPA), in situ trace elements (LA-ICP-MS), and internal textures (cathodoluminescence, CL). These data, combined with machine learning methods, were used to determine scheelite genetic types and reconstruct fluid evolution. REE patterns and CL textures reveal three scheelite generations in Yalongri (early Sch I c, middle Sch I b, late Sch I a), two in Zhigunong (early Sch II a, late Sch II b), and one in Xiongbaxi (Sch III). Low Na (0–329 ppm) and Nb (3.9–39 ppm) relative to high ΣREE + Y-Eu (16–3857 ppm), indicate that the dominant substitution mechanism is 3Ca[sup.2+] = 2REE[sup.3+] + □Ca (□Ca = Ca vacancy). δEu values > 1 in Sch I a, Sch I b, Sch II a, and Sch II b indicate reducing fluids, whereas δEu < in Sch I c and Sch III reflects oxidizing conditions. Variations in REE, Mo, and Sr contents suggest that ore-forming fluids in Yalongri evolved from oxidizing to reducing conditions, with late-stage scheelite undergoing dissolution–reprecipitation. Zhigunong records two reducing stages: an early REE-rich-Mo-poor stage and a later REE-poor-Mo-rich stage. Xiongbaxi records a single oxidizing, REE-rich, Mo-rich stage. Scheelite exhibits low-to-moderate Sr/Mo ratios (0.02–6.10), consistent with a magmatic–hydrothermal origin, and relatively uniform Y/Ho ratios (12–59) indicating stable crystallization conditions. A Random Forest model classifies scheelite into orogenic, porphyry, skarn, and greisen types. Overall, the results indicate that ore-forming fluids evolved from oxidizing to reducing conditions, favoring metal transport and enrichment. Integrated geochemical and machine learning evidence suggest, strong potential for porphyry-type Cu-W(-Mo) mineralization in Yalongri and Zhigunong, and skarn-type W-Mo mineralization in Xiongbaxi, providing important guidance for future exploration in the western Gangdese metallogenic belt.

This longitudinal research examined whether children's facial trustworthiness as judged by strangers can predict their real-world trustworthiness and peer acceptance. Adults (Study 1) and children (Study 2) judged the facial trustworthiness of 8- to 12-year-old children (N = 100) solely based on their photographs. The children's classmates were asked to report their real-world trustworthiness and peer acceptance. Children's facial trustworthiness reliably predicted these outcomes both initially when the photographs were taken, as well as 1 year later, and this effect was mediated by the initial ratings of real-world trustworthiness and peer acceptance. These results provide evidence for a long-lasting linkage between children's facial and real-world trustworthiness.

Research has explored age-related and cultural differences in moral evaluations of dishonesty; however, this has not yet been examined in an aging context. The present study provided a novel account of how younger and older adults (in Canada, Singapore, and China; N  = 401) morally evaluate adults’ truths and lies in antisocial, modesty, and politeness settings. Participants completed a questionnaire assessing how acceptable it is for adults to tell the truth or a lie in given social scenarios, and they reported on their levels of collectivism and individualism. In all countries, older adults provided more favorable evaluations to blunt and immodest truths than younger adults did. Compared with younger adults, older adults provided harsher evaluations to Polite Lies (in Canada and China) and Modesty Lies (in Canada and Singapore). Thus, there may be an age-related increase in the acceptability of direct honesty over good-intentioned lies, and this age effect is somewhat stable across cultures. Older adults were also more lenient in evaluations of an antisocial lie to conceal an affair compared to younger adults . Overall, adults in China tended to rate lies less negatively, and their greater levels of collectivism mediated their greater approval of polite lies. The present results demonstrate that evaluations of (dis)honesty differ as a function of age and culture and these results can assist in developing a more complete lifespan model of the morality of dishonesty.

This paper takes a 50000 m3 liquefied petroleum gas storage tank in a chemical company in Tianjin for an example, and adopts the fire simulation software FDS to make numerical simulation for the whole-area pool fire accident in the liquefied propane gas tank. The variation of flame and the flue gas in the combustion process of pool fire is obtained from the simulation. The simulation results show that flame shape, smoke production rate and thermal radiation intensity is small in the early pool fire, and significantly increases with the development of combustion process, finally maintains in a relatively stable state.

This paper analyzes the fire explosion risk of liquefied petroleum gas (LPG) storage tank through methods of model calculation and simulation. A large crude oil reserves library in Tianjin is the main study object in this paper, the fire process for the storage tank pool fire is simulated using the fire simulation software FDS, which produces the development of fire and the change of the radiation intensity in the case of fire. And the damage degree of explosion accident consequences has been calculated quantitatively by the vapor cloud explosion model, which obtains the casualties radius and property damage. Study results provide reference data and theoretical guidance for fire protection design and fire fighting tactics in LPG storage tank area.

This paper takes the epoxy propane tank area in a chemical company in service for an example, and conducts the fire risk assessment and numerical simulation of pool fire in a single tank of this area. Through the analysis of burning flame shape, flue gas velocity of flame center and the variation of thermal radiation intensity, the destructive power of pool fire to surrounding equipment, tanks, buildings is obtained, the degree of damage to workers and rescuers around is determined. The study results are of important clinical significance for the fire fighting and safe evacuation in the epoxy propane tank area.

Against this backdrop, the Western countries plotted a \"no-fly\" zone resolution within the UN Security Council and then launched military assaults in the name of guaranteeing the implementation of the UN mandate.