How does COVID-19-related social media usage influence disordered eating? A daily diary study among Chinese adults during lockdown.

Background: Despite previous studies highlighting the benefits of social media use during the COVID-19 pandemic, particularly under lockdown, limited research has identified the potential detrimental consequences of social media use during lockdown. Therefore, the purpose of this study is to examine the effects of social media on mental health in particular situations and the mechanisms underlying these effects.

Methods: A daily diary protocol was adopted.

Relation between narcissism and meaning in life: the role of conspicuous consumption.

Both overt and covert narcissism are positively correlated with conspicuous consumption, which is considered to have the function of satisfying narcissists' dignity needs through showing their status. However, the two types of narcissism are related to different mental health outcomes, and the possible role of conspicuous consumption in these relations has not been explored in depth. Meanwhile, researchers have not reached a consensus on the relation between conspicuous consumption and mental health.

[MiR-143 inhibits migration of human nasopharyngeal carcinoma cells by negatively regulating GLI3 gene].

Objective: To investigate the possible biological function and mechanism of miR-143 in the metastasis of human nasopharyngeal carcinoma (NPC).

Methods: Using bioinformatics to predict the target gene of miR-143, the 3'UTR and mutant 3'UTR of GLI3 gene was cloned into psiCHECK-2 vector. Dual-luciferase reporter gene assay was employed to examine the repression of the GLI3 gene.

[Expression of miR-143 in nasopharyngeal carcinoma cell lines and its effect on cell adhesion ability].

Objective: To detect miR-143 expression in human nasopharyngeal carcinoma (NPC) cell lines and explore the role of miR-143 in regulating the adhesion ability of NPC cells.

Methods: Fluorescence quantitative RT-PCR was used to detect miR-143 expression levels in 5 NPC cell lines (CEN1, CNE2, HONE1, 5-8F, and 6-10B) and an immortalized human nasopharyngeal epithelial cell line (NP69). The retrovirus plasmid pMSCV-puro-miR-143 was constructed and the packaged retroviruses pMSCV-puro and pMSCV-puro-miR-143 were infected in 5-8F cells to establish a cell line with stable miR-143 overexpression, whose adhesion ability was tested with adhesion assay.

A simple method for the preparation of hollow ZnO nanospheres for use as a high performance photocatalyst.

We have used classical electrospinning and subsequent thermal treatment to successfully fabricate hollow ZnO nanospheres. The hollow ZnO nanospheres were then used to study the degradation of Rhodamine B (RhB) dye and were proven to have excellent photocatalytic activity. The mechanism of formation of hollow ZnO nanospheres and the reason for the high photocatalytic activity were also investigated.

Direct preparation of carbon nanotubes and nanobelts from polymer.

Carbon nanotubes and carbon nanobelts were obtained via single-needle electrospinning on a basis of water-in-oil (W/O) emulsion technique, respectively. The morphology of electrospun products can be controlled by controlling the temperature of the collector during the electrospinning process. The mechanism of fabricating PAN nanotubes and nanobelts by emulsion electrospinning is discussed in detail.