Electromagnetic Fields ; adverse effects ; Humans ; Radiologic Health

Electromagnetic Fields ; adverse effects ; Health Policy ; Humans

Animals ; Dogs ; Drug Evaluation, Preclinical ; methods ; Statistics as Topic

Comprehensive evaluation for colleges of stomatology is a complex systematic engineering, which is affected by the determination of index and weight. Based on the previous research results,this study establishes a comprehensive evaluation index for colleges of stomatology in China by applying Delphi method,carrying out two-round consultation to 45 experts,which includes 4 first layer indicators and 21 second layer indicators.

Objective To analyze the genetic diversity of snail populations from five provinces in China mainland. Methods Genomic DNA was amplified by random primer and the products were electrophoresed by 8% polyacrylamide and stained by 0.6% silver nitrogen. The results were recorded and analyzed. Results The average similarity and match percentage among the nine snail populations were 0. 721 4 and 0. 680 9 respectively. The cluster trees showed that the nine snail populations could be divided into three groups ; snails from Dali of Yunnan Province and Puge of Sichuan Province were the first isolated group; snails from Fuqing of Fujian Province and Dongtai of Jiangsu Province were clustered into the second group; the other four populations from Anhui Province and snails from Yixing of Jiangsu Province belong to the last group. Conclusion There is a large diversity among smooth-shelled snails in China although close relationship exists. The cluster trees gained by different snail populations are basically the same and consistent with the distribution of these populations. However, further study should be carried out on the cluster of smooth-shelled snails from Dongtai of Jiangsu Province.

Objective: To improve the diagnosis and treatment level of secretory otitis media (SOM) of children. Method :Clinical information of 80 children with SOM were colletcted and analysed. All of the 80 cases (144 ears)were treated by myringotomy with Grommet insertion. Among them, 30 cases by adenotonsillectomy. 10 cases by palatoplasty. Secretions of 54 ears were carded out by bacterial culture. Result:80 cases were followed up for 6 to 12 mothes. 120 ears of 144 were cured (83％) ,with hearing improved. The tympanograms and hearing threshold of pure tone were found to be normal. The Gram＇s positive and negative germs of bactevial culture were 20.7％ (6/29 samples ) and 24％ (6/25 samples ) respectively. Conclusion: Children with secretory otitis media should be treated as early as posible to improve the patients＇ hearing and develope their speech.

At present,in the opinions of the domestic and foreign scholars,the only hope of long-term survival even cure of hilar cholangiocarcinoma was obtained by radical resection(ie R0 resection).The application of preoperative assessment with appropriate and comprehensive strategies can judge the respectability and Intraoperative safety accurately to the tumor,thereby it can improve the radical resection rate and safety of patients with hilar cholangiocarcinoma.In this paper,preoperative assessment strategies are reviewed.

Objective:To explore the influencing factors on patients' health seeking behavior in rural China by employing the theory of planned action.Methods:Data from cross-sectional household-based health survey carried out in 2008 were used in the study.Correlations between outcomes and explanatory variables were studied by Logistic regression.Results:The studying population included 19 389 adult patients over the age of 15.Illness awareness,medical experience and structural restriction factors had strong effect on whether the patients chose medical service.Pepople in different socioeconomical status suffered different influences.Conclusion:Responding to the changing trend of health service demand among rural residents,we should recognize the differentiation and allocate the healthcare resources more rationally.

OBJECTIVE To survey the antibiotic usage and its rationality in clinical.METHODS From Jan 2009 to May of 2009,950 medical records were selected to conduct a retrospective investigation.RESULTS The incidence of antibiotic usage was 88.2%,71.6% cases were intended for active treatment,28.4% for preventive regimen.72% cases in internal medicine were for active treatment whereas 94% were for surgical prophylaxis.In terms of the antibiotic use,single drug accounted for 56.2%,two-drug 38.9% and three-drug 4.9%.Inspection rate of drug treatment was 69.7% and hospital infection rates was 2.1%.CONCLUSIONS To improve antibiotic administration,systematic efforts are required to keep the medical staff updated of antibiotic principles so as to improve clinical rational use of antibiotics.

Pertussis is an severe infectious respiratory disease that continues to be a serious public health problem,which is caused by Bordetella Pertussis.Because it's highly infectivity,it is still an important etiological factor associated with persistent cough in adults and adolescents.With the introduction of mass vaccination in 1974,there has been a dramatic decrease in the morbidity and mortality.However,in recent years,increasing numbers of pertussis are reported in adolescents and adults in many countries where with high vaccination coverage.The thesis summarize and discuss the progress of pertussis cpidemiology and clinical characteristics.