Linking undergraduates' future orientation and their employability confidence: The role of vocational identity clarity and internship effectiveness.

Given the growing research interest in students' school-to-work transition, we examine the positive effects of undergraduates' future orientation on their employability confidence. Specifically, building on social cognitive career theory which suggests that career choices are influenced by a person's experiences, beliefs, interests, and values, we explore the mediator of vocational identity clarity and the positive moderator of internship effectiveness in this association above. Two studies were conducted to test our model. Study 1 included a laboratory experiment (N = 136) and tested the positive association between undergraduates' future orientation and their employability confidence through vocational identity clarity. Study 2 used a time-lagged research design from undergraduates (N = 315) to replicate the results and to additionally test a mediating role of internship effectiveness. We find that undergraduates' future orientation has a strong positive relationship with employability confidence, and this relation is mediated by vocational identity clarity. Additionally, the results show a positive moderation effect, that is, when undergraduates' internship effectiveness is high, the above indirect relation becomes stronger. The current research enriches the existing understanding of how and when the students' future orientation can contribute to employability confidence theoretically and empirically. Meanwhile, these findings indicated valuable practical applications by encouraging universities to promote undergraduates' future orientation and provide effective internships for them towards enhancing their vocational identity clarity and ultimately boosting their employability confidence.

Tea Polyphenols Enhanced the Antioxidant Capacity and Induced Hsps to Relieve Heat Stress Injury.

Keap1-Nrf2-ARE and heat shock proteins (Hsps) are important endogenous protection mechanisms initiated by heat stress to play a double protective role for cell adaptation and survival. H9C2 cells and 80 300-day-old specific pathogen-free chickens were randomly divided into the control and tea polyphenol groups and used to establish a heat stress model in vitro and in vivo. This task was conducted to explore the protection and mechanism of tea polyphenols in relieving thermal injury. A supplement with 10 µg/mL tea polyphenols could effectively relieve the heat damage of H9C2 cells at 42°C. Accordingly, weaker granular degeneration, vacuolar degeneration, and nucleus deep staining were shown. A strong antioxidant capacity was manifested in the upregulation of the total antioxidant capacity (T-AOC) (at 5 h, P < 0.05), Hemeoxygenase-1 mRNA (at 2 h, P < 0.01), superoxide dismutase (SOD) (at 2, 3, and 5 h, P < 0.05), and Nrf2 (at 0 and 5 h, P < 0.01). A high expression of Hsps was reflected in CRYAB at 3 h; Hsp27 at 0, 2, and 3 h (P < 0.01); and Hsp70 at 3 and 5 h (P < 0.01). The supplement with 0.2 g/L tea polyphenols in the drinking water also had a good effect in alleviating the heat stress damage of the myocardial cells of hens at 38°C. Accordingly, light pathological lesions and downregulation of the myocardial injury-related indicators (LDH, CK, CK-MB, and TNF-α) were shown. The mechanism was related to the upregulation of T-AOC (at 0 h, P < 0.05), GSH-PX (at 0.5 d, P < 0.01), SOD (at 0.5 d), and Nrf2 (at 0 d with P < 0.01 and 2 d with P < 0.05) and the induced expression of CRYAB (at 0.5 and 2 d), Hsp27 (at 0, 0.5, and 5 d), and Hsp70 (at 0 and 0.5 d). In conclusion, the tea polyphenols enhanced the antioxidant capacity and induced Hsps to relieve heat stress injury.