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The major objectives of the article were to explore the effects of the fear and anxiety of Covid-19 and business opportunity recognition on start-up self-efficacy, entrepreneurial intention, and behaviour, as well as to test entrepreneurial intention-behaviour association. Research Design & Methods:The study was performed by means of an online survey questionnaire conducted on 405 students at a Vietnamese university. The survey questionnaire was developed based on prior research. Structural equation modelling (SEM) was utilised to test the research model and hypotheses. Findings: The results illustrated that the fear and anxiety of Covid-19 have a negative impact on start-up self-efficacy and entrepreneurial intention, while business opportunity recognition is strongly and positively correlated with entrepreneurial self-efficacy, entrepreneurial intention, and behaviour. In addition, entrepreneurial intention is found to be the most important antecedent to predict actual start-up behaviour whereas entrepreneurial intention significantly mediates the association between entrepreneurial self-efficacy and entrepreneurial behaviour. Implications & Recommendations:The study offers practical contributions for both universities and policymakers to foster youths' entrepreneurial activities and manage the negative outcome of Covid-19 on students' mental health. Contribution & Value Added: This research contributes to the entrepreneurship literature by addressing the notable gap when testing the linkages between entrepreneurial intention and behaviour. Furthermore, the finding confirms that the fear and anxiety of Covid-19 can decrease entrepreneurial self-efficacy, intention, and behaviour, while business opportunity recognition fosters entrepreneurial activities. Article type:research article

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This is the first study with the purpose of creating a new system for moderate permanent magnetic fields (MF) which is simple, safe, easy to set up and saves space in a tissue culture room or greenhouse. We applied this system to investigate the effects of different MF intensities (0.1 Tesla (T), 0.15 T and 0.2 T) and different durations of exposure to 0.15 T MF, at both North (N) and South (S) poles on the micropropagation of Phalaenopsis Gallant Beau ‘George Vazquez’ at 2 development stages: protocorm‐like bodies (PLBs) proliferation and shoot development. The control exposed to naturally occurring geo‐MF and not to any induced MF. The MF of 0.1 T ‐ S resulted in the greatest fresh weight of regenerated PLBs and also the greatest influence on specific Phalaenopsis plantlet growth parameters: maximum leaf length, root length, fresh and dry weight of shoots and roots, and leaf width. The S pole of MF had stronger effects on Phalaenopsis PLBs proliferation than the N pole did in all treatments.Constant exposure to a MF of 0.15 T for 3 months, independent of polarity, significantly enhanced the development of plantlets when compared with the shorter duration of exposed plants (i.e. 1, 2 months). The longer duration of exposure to an MF of 0.15 T (7 weeks vs. 2 weeks), regardless of the polarity, resulted in greater biomass of newly formed PLBs and smaller average number of newly formed PLBs.The results obtained in this study indicate that MFs have the potential to be applied in practical plant culture room for fundamental physiological studies.