Prevention-focused individuals are motivated to maintain the status quo. Given this, we predicted that individuals with a strong prevention focus, either as a chronic predisposition or situationally induced, would treat their initial decision of how to behave on a first task as the status quo, and thus be motivated to repeat that decision on a subsequent task—even for decisions that are ethically questionable. Five studies supported this prediction in multiple ethical domains: whether or not to overstate performance (Studies 1, 2a, 2b), to disclose disadvantageous facts (Study 3), and to pledge a donation (Study 4). The prevention-repetition effect was observed when initial and subsequent decisions were in the same domain (Studies 1-3) and in different domains (Study 4). Alternative accounts such as justification for the initial decision and preference for consistency were ruled out (Study 2b).

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During the initial outbreak of COVID-19 in China, people spent a lot of time viewing or listening to COVID-19-related media content. And according to the conservation of resources theory, COVID-19-related media exposure would be related to multiple psychological outcomes, and different contents would have different associations with different psychological outcomes. Therefore, the present study aimed to clarify these relationships and find out the most important psychological outcome correlated with COVID-19-related media exposure. An online survey was conducted to collect information about individuals’ media use behaviors and mental health status. A total of 917 participants were included in further analyses. The results proved that different kinds of content had different relationships with different psychological outcomes. To be more specific, the content about people being heroic and speeches from experts and the authorities were related to increases of positive affect, while reports from hospitals were correlated with increases of death anxiety. Moreover, positive affect was central nodes of the network. The current findings indicated viewing objective and positive content was associated with positive psychological outcomes while viewing negative one was correlated with negative psychological outcomes. Furthermore, positive affect was the most important psychological outcome related to COVID-19-related media exposure.

Exposure to disaster‐related media content is closely related to mental health. This study aimed to explore the patterns of COVID‐19‐related media exposure and examine whether these patterns were associated with mental health. In total, 917 participants in this study completed the Media Exposure Questionnaire (MEQ), the Positive and Negative Affect Scale (PANAS), and the Depression Anxiety Stress Scale (DASS‐21). Then latent class analysis and discriminant analysis were conducted to identify the patterns of media exposure. Finally, we tested how mental health was associated with such patterns. Four subtypes of media exposure were identified: the slightly exposed group, the lower‐moderately exposed group, the higher‐moderately exposed group, and the heavily exposed group. And there were significant differences in individuals' levels of positive and negative affect among different subtypes, but no difference in depression, anxiety, and stress. The results of the current study indicated that more COVID‐19‐related media exposure was related to increased positive and negative affect. And the current findings would help people to better understand the relationships between media exposure and mental health during a pandemic.

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Gibberellins (GAs) play a major role in a variety of key plant development processes, especially in promoting seed germination, stem and root growth, and fruit development. DELLA proteins are the core elements in GA signal transduction pathway, which exist in the plant nucleus and belong to the GRAS protein family. DELLA proteins negatively regulate the GA signaling pathway and biosynthesis, inhibiting plant growth. DELLA proteins can also interact with F-box, PIFS, ROS, SCLl3 and other proteins to enhance plant response to various adverse environmental influences such as drought, low and high temperature, heavy metal stresses. In addition, DELLA proteins can also partially regulate plant growth and development through interacting plant hormones such as ABA (abscisic acid), CK (cytokinin), ET (ethylene), BR (brassinosteroid) and JA (jasmine). This review summarized the basic characteristics of DELLA proteins, the transduction of hormone and environmental signals, as well as the regulation of plant growth and developments. DELLA proteins have broad application prospects in modern agricultural production in the future, but the molecular mechanism of DELLA proteins regulating plant growth and development are still unclear, and needs further study.

Firefighters exhibit a higher prevalence of mental health issues than other occupations because they often directly or indirectly experience potentially traumatic events. Previous research has suggested that recovery experiences, sleep, and fatigue may be protective or risk factors for firefighters' mental health. This study conducted regularised partial correlation network analysis to investigate and visualise the complex relationships between these variables. We collected data through an online survey, and 3144 career firefighters from a large east‐coast city in China, were included in the analyses. The results of the network analysis showed that: (1) only relaxation and mastery experiences directly correlated with one dimension of the mental health scale, namely, life/social functioning; (2) sleep quality had stronger correlations with mental health issues than sleep quantity; and (3) mental health issues were central nodes of the network. These results indicated that firefighters' mental health was close to other variables in the network and acted as a bridge linking other variables. Therefore, more attention should be paid to the mental health of firefighters to prevent comorbidities. The study's results also indicated that recovery experiences and sleep may be protective factors for firefighters' mental health.

Tetrahedron penetrating frames is a new breakwater structure.In this paper,the attenuation characteristics of tetrahedron penetrating frames were measured through physical modeling.The effect of the wave period,wave height,the number of rows,underwater penetration,row space,layout,and other factors on the wave transmission coefficient were investigated. The results show that the proposed breakwater has good wave dissipation capacity,which has broad application prospects.