Mediating effect of interpersonal relations on negative emotions and dysmenorrhea in female adolescents

Background Good interpersonal relationships can improve the negative mood and, to a certain extent, may help relieve dysmenorrhea symptoms. However, there has been no study examining the role of interpersonal relationships in dysmenorrhea and how they may interact with negative emotions. Aims To investigate the connection between negative affect and dysmenorrhea, and the role of interpersonal relationships plays in this relationship. Methods The Cox Menstrual Symptom Scale (CMSS), short-form of Depression Anxiety Stress Scale, Interpersonal Comprehensive Diagnostic Scale and UCLA (University of California at Los Angeles) Loneliness Scale were applied to 855 adolescent nursing students to collect information on severity and frequency of dysmenorrheal symptoms, negative emotions (including depression, anxiety and stress), interpersonal problems and subjective experience of loneliness among them, and the relationship among these variables was examined. Results (1) Both the severity and frequency of dysmenorrhea were positively correlated with negative emotions, loneliness experience and interpersonal problems, while negatively correlated with age at menarche.(2) The negative emotions, romantic relationship and menarche age, but not loneliness and interpersonal problems, significantly contributed to both the severity and frequency of dysmenorrhea.(3) Mediation analysis revealed that the effects of loneliness and interpersonal problems on dysmenorrhea were totally mediated by negative emotions. Conclusions This investigation indicates that the relationship between interpersonal relationships and dysmenorrhea is mediated by negative emotions.

Global research on cognitive behavioural therapy for schizophrenia from 2000 to 2019:a bibliometric analysis via CiteSpace

Background Cognitive behavioural therapy(CBT)is considered to be an effective treatment for schizophrenia.In recent years,researchers have published clinical research results on CBT for schizophrenia.However,there is currently a lack of bibliometric analysis on CBT for schizophrenia.Aims To understand the current situation and research trends of CBT for schizophrenia,and to provide valuable information for researchers in this field.Methods Literature was retrieved from the Web of Science Core Collection database.CiteSpace was used to visually analyse the current status of research on CBT for schizophrenia,as well as trends and points of general interest on this topic.Results A total of 1151 papers were retrieved.The annual number of publications has increased 417.65%from 2000 to 2019.Schizophrenia Research was the most active journal.McGorry enjoys considerable influence.The University of London is deemed to be the most active research institution.England and the USA retain the highest scientific productivity in this field.China and Norway might make more contributions to this field in the future.The most important research topics are randomised controlled trials of CBT for schizophrenia,meta-analysis,scale selection and research on the improvement of quality of life.Results from the following keywords‘psychoeducation’,‘insomnia’,‘individual’,‘mental illness’,‘major depressive disorder’,‘efficacy’,‘internalised stigma’and‘remediation’indicated new research frontiers in this field.Conclusions The field of CBT for schizophrenia is progressing and has great potential.The level and quality of research in this field is high.The proposal of research hotspots and frontiers serves as a direction for researchers in this field.Researchers around the world should strengthen their cooperation and communication to promote further development of this field.

Effect of Silicon Application on Rice Growth and Production Structure

This paper studies the effect of silicon on the growth and production structure of rice( Oryza sativa L.),and proposes the appropriate applying amount of silicon. The results show that the application of silicon fertilizer to rice can increase specific leaf weight and leaf area index,and improve rice yield by increasing grain number,kernel number and thousand kernel weight. The growth rate of rice yield is 3. 45%-15. 69% by applying silicon. In the Jianghan Plain,the applying amount of silicon fertilizer for rice( SiO_2) is recommended at 15-30 kg/ha.