Community Workers’Social Support and Sleep Quality during the Coronavirus Disease 2019(COVID-19):A Moderated Mediation Model

To explore the relationship between social support and sleep quality of community workers in Wuhan during the coronavirus disease 2019(the COVID-19 infection epidemic),this research constructed a mediating effect model to explore the mediating psychological mechanism of social support influencing sleep quality of front-line community workers.A total of 500 front-line community workers in Wuhan were investigated.We used the perceived social support scale(PSSS),the Connor-Davidson Resilience Scale(CD-RISC),the perceived stress scale(PSS),and the Pittsburgh sleep quality index(PSQI)to measure social support,psychological resilience,perceived stress and sleep quality.Specifically,the higher the PSQI,the worse the sleep quality.Pearson correlation structural equation model was used to analyze the relationship between these factors.The results showed that:(1)There was a significant negative correlation between social support,psychological resilience,and perceived stress of community workers and PSQI,that means,the higher the level of social support,psychological resilience,and perceived stress,the higher the sleep quality.(2)Social support positively predicted psychological resilience and perceived stress,and perceived stress negatively predicted PSQI.(3)Social support can affect sleep quality through the mediating role of psychological resilience and perceived stress,and the mediating role includes two paths:the single mediating role of perceived stress and the chain mediating role of psychological resilience-perceived stress.(4)Gender moderates the relation-ship between social support and perceived stress,and the influence of social support on perceived stress of women is higher than that of men.Gender moderates the relationship between psychological resilience and PSQI,and only women’s psychological resilience had a negatively predictive effect on PSQI,while men did not,which means that psychological resilience of female frontline community workers can positively predict sleep quality.This research reveals the relationship between social support and sleep quality and its mechanism and verifies that social support can indirectly affect physical health through psychological resilience and perceived stress.It provides reference suggestions and intervention guidance for improving the sleep quality of community workers.

Clinical Efficacy Observation on Dysmenorrhea of Cold-damp Stagnation Type with Graphene Thermotherapy Based on the Idea of TCM "Preventive Treatment of Disease"

[Objectives] To explore the clinical efficacy of graphene waist protector on dysmenorrhea of cold-damp stagnation type.[Methods]150 patients with cold-damp stagnation type were randomly divided into 3 groups: 50 cases in the experimental group( using graphene waist protector),49 cases in the blank group( using the waist protector for removing the heating plate) and 51 cases in the control group( taking the Tongjingbao granules). After intervening for 3 menstrual cycles,visual analogue scale and the COX menstrual symptom scale were used to evaluate the clinical efficacy of graphene waist protector. [Results] The clinical effective rate of dysmenorrhea in experimental group was 64. 00%,while that of control group was 72. 54%. With the effective rate of symptoms,the test group was 56. 00% and the control group was 64. 70%; VAS dysmenorrhea visual score,duration of dysmenorrhea,severity of COX dysmenorrhea and duration of symptoms after intervention were significantly decreased in both experimental group and control group,the differences were statistically significant( P < 0. 05); for the differences of the scores before and after the intervention: the differences of the experimental group and the control group were statistically significant( P < 0. 05) compared with those of the blank group. There was no significant difference between experimental group and control group( P > 0. 05). [Conclusions] Graphene belt of experimental group and Tongjingbao granules of control group both have therapeutic effects on dysmenorrhea of cold-damp stagnation type. Graphene waist protector can relieve the pain and its accompanying symptoms in patients with primary dysmenorrhea of cold-damp stagnation type.

Collaborative integration of Fe-N_(x)active center into defective sulfur/selenium-doped carbon for efficient oxygen electrocatalysts in liquid and flexible Zn-air batteries

Strategic active site organization is imperative for the advancement of effective and long-lasting catalysts of oxygen reduction reactions.However,the controllable multi-active site design is a highly intricate topic for catalyst synthesis.Employing pre-trapping and post-activation strategy,Fe-N bonding structure and S,Se functionalized heteroatom are integrated into a conductive porous carbon.In this process,the nitrogen-abundant polymer 1,3,5-triformylbenzene-tris(4-aminophenyl)benzene(Tf-TAPA)adsorbs Fe^(3+)under the intrinsically metal anchoring ability of N atoms and simultaneously in-situ assembles longchain thiophene-S.Subsequently,the Fe^(3+)is transformed into Fe-N_(x)moieties with the conversion of the organic chain to incompletely graphitized carbon.Furthermore,the alteration of the electronic configuration achieved through the introduction of dual-atom S and Se leads to a pronounced enhancement in catalytic efficiency.Benefitting from the Fe-N_(x)bonding structure,dense structural defects,and conductive carbon networks,the resultant Fe-S,Se/NCNs possesses a positive half-wave potential of 0.86 V and a 90%current retention rate,outstripping the Pt/C benchmark.Moreover,the liquid and flexible ZAB driven by Fe-S,Se/NCNs achieves large power densities of 259.7 and 164.7 m W/cm^(2),respectively.This study provides a new comprehension in developing an efficient and stable M-N-C oxygen electrocatalyst.