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Objective@#To describe bullying victimization of middle school students in Dalian and associated factors, so as to provide scientific basis for campus bullying prevention.@*Methods@#The stratified cluster sampling method was used to select 2 540 middle school students from urban and rural areas in Dalian, who were investigated with campus bullying victimization and related factors.@*Results@#The reported rate of campus bullying victimization among middle school students in Dalian was 25.11%. The rates of physical violence (5.99%, 3.66%) and verbal violence(24.93%, 15.87%) of male students were higher than that of female students( χ 2=6.56, 27.94, P <0.05). The rates of verbal violence (22.84%, 16.25%) and emotional neglect(16.84%, 13.18%) of junior high school students were higher than those of high school students( χ 2=14.21, 5.44, P < 0.05 ). The rates of physical violence(6.07%, 3.55%), verbal violence(24.58%, 16.05%) and emotional neglect(18.88%, 12.06 %) of rural students were higher than those of urban students( χ 2=7.72, 24.81, 19.64, P <0.05). Male students, junior high school students and rural students suffered more severe campus bullying than female students, high school students and urban students( Z =3.46, 3.75, 5.89, P <0.01). The structural equation model showed that academic performance (path coefficient -0.003) and father s education (path coefficient -0.004 ) have a direct negative effect on campus bullying behavior, while mother s education (indirect action coefficient -0.000 8), height(indirect action coefficient -0.000 3), father s education (indirect action coefficient -0.000 3) and weight (indirect action coefficient 0.000 2) indirect effects on campus bullying through academic performance.@*Conclusion@#The prevalence of campus bullying victimization among middle school students in Dalian is relatively high, which worths further attention to. Rural students, junior high school students and boys are more likely to suffer campus bullying. Improving academic performance might be beneficial for campus bullying prevention.
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Objective To understand the malaria epidemic situation in Chengdu City,so as to provide the evidence for effec-tively carrying out the malaria elimination work. Methods The data of imported malaria in Chengdu City from 2012 to 2016 were collected from the Disease Surveillance Information Reporting System of Chinese Center for Disease Control and Prevention and analyzed respectively. Results A total of 240 imported malaria cases were reported in Chengdu City from 2012 to 2016. In de-tail,68.75％of the cases were falciparum malaria cases,20.41％were vivax malaria cases,2.50％were quartan malaria cases, 6.25％were ovale malaria cases,and 2.08％were mixed Plasmodium infections. Among them three patients died,with a mortali-ty of 1.25％. All of the cases were infected overseas,among which 224 patients returned from Africa and 16 patients from South-east Asia. The annual average morbidity was 0.28/100000,and there was a significantly difference among annual average mor-bidities(χ2=23.87,P0.05). Conclusion The number of overseas imported malaria in Chengdu City increases year by year. The effective measures to control the overseas imported malaria should be strengthened to consolidate the achievements of malar-ia elimination.
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Objective To establish the quality standard of Huangqi-Changyu'an capsule. Method Thin layer chromatography was used to identify psoralen, evodia mtaecarpa, and nutmeg in Huangqi-changyu'an capsule. HPLC was used to determine the content of psoralen. A Hypeisil BDS C18 column(200 mm×4.6 mm,5 μm) was used with mobile phase consisted of acetonitrile-water (30:70) at the rate of 1 ml/min. The detection wavelength was set at 245nm with the column at room temperature. Results The liner range of psoralen was 3.572~53.58 μg/ml (r=0.999 9) with average recoveries of 99.04%, and the RSD was 0.8%. The liner range of isopsoralen was 3.796~56.94 μg/ml (r=0.999 9) with average recoveries of 99.20%, and the RSD was 0.6%. Conclusion This method is sentivive, accurate and rapid for the quality control of Huangqi-Changyu'an capsule.
ABSTRACT
OBJECTIVE: To establish a HPLC method for the determination of the content of Ephedrine hydrochloride in Antiviral oral liquid. METHODS: The determination was performed on Diamonsil C18(250mm?4.6mm,5?m). The mobile phase consisted of acetonitrile-0.1% phosphate (6∶94) with flow rate of 1.0mL?min-1. The detection wavelength was 207nm and the column temperature was set at room temperature. RESULTS: The linear range of Ephedrine hydrochloride was 5.8～29.0?g (r=0.999 6), with average recovery at 98.13%,RSD=1.4%(n=9). CONCLUSION: This method was highly specific, sensitive and reproducible, and applicable for the quality control of Antiviral oral liquid.