Objective To introduce a new purchase management model of hospital.Methods Through a narration and a deep analysis on current status of hospital purchase,some disadvantages were summed up and new suggestions and solutions were put forward so as to reform purchase model.According to the characteristics of military hospitals,commercial bribery in national medical industry was eliminated and medical costs were reduced.The broad masses of ordinary people could benefit from it.Results The facts of the new purchase management model of hospital were clarified and analyzed in an unique perspective,which were proved to be worthy of researching.Conclusion More detailed work should be done to implement the model.

Objective To introduce a new field-based operating astral lamp. Methods The operating astral lamp employs specially -designed LED as the main light source, and IC as the control circuit. All the components are arranged in a combinatorial structure. It uses no glass material and makes the most of light plastic materials instead of metal. Results By testing the use of it in field training, this astral lamp proves to possess the following traits that high efficiency of light-emitting and low heat and thermal radiation, small power consumption affording a long time of use, strong abilities for vibration and shock resistance, and light-weighted conformation and easy assembly providing a convenient portability. Conclusion It is very suitable for field patrolling and defending.

A systematic analysis of the typeⅢ secretion genes of Aeromonas hydrophila strain AH-1 by constructing ahyR and ahyI mutant revealed that they are under quorum-sensing control. This observation was supported by the down-regulation of the TTSS genes in the presence of lacZ-TTSS gene promoter and the corresponding advanced secretion of AexT in ahyI mutant.

Because of the increasing importance of medical equipment in hospital,medical equipment maintenance division,a department guaranteeing the normal performance of medical equipment,will also act as a vital way.This paper introduces some problems in the management of medical equipment maintenance division and analyses the reasons.Some ways and means are suggested to manage the medical equipment maintenance.

Objective To design an endoscopic image acquisition system.Methods High resolution CCD image sensor was used as the image acquisition equipment to converse the optical signals into electrical ones. Data were stored with FPGA controller after ADC, and then transmitted to the computer with PCI bus,Results Trials proved that the system could acquire clear and stable image with simple structure and easy operation.Conclusion The system can acquire high-quality images for the diagnosis and treatment of endoscope.

The history of portable medical endoscope was studied,and the key technologies was introduced on five modules of power supply,front-end acquisition,cold light source,back-end processing and wireless transmission.The application of the latest technologies of image sensor,image acquisition circuit,image processing circuit,wireless transmission and etc was analyzed in above key technologies.The developing trend of portable medical endoscope was pointed out.

Objective To design a wireless oxygen concentration monitoring device to solve the existing problems.Methods The device was composed of an oxygen sensor,an oxygen sensor line,an oxygen concentration monitoring host and a display terminal.HT67F489 was used as the main control chip,KE-25 oxygen concentration sensor was applied to collecting oxygen concentration data,and then through the T82 module wireless transmission of the data was executed to the display terminal of the App software.Results Clinical trials proved the measure value by the device was the same to that by the equipped meter,which facilitated the medical engineer find the faults in the shortest time.Conclusion The device gains advantages in easy installation,stable performances,high accuracy and anti-interference against physical environment,and thus has high social and economic benefits.

Objective To provide evidence for control and prevention of hand-foot-mouth disease(HFMD) ,we analyzed the epi-demiological and viral characteristics of HFMD in Yongchuan district from 2009 to 2012 .Methods We collected the clinical dates of HFMD cases from Diseases Infectious Department of the Yongchuan Affiliated Hospital of Chongqing Medical University during 2009 to 2012 ,and analyzed the epidemiological characteristics .Results There were 509 HFMD cases in recruitment ,including 2 se-vere cases(one was dead) .The peak incidence of HFMD occurred from May to July annually .Between 2011 and 2012 ,there was an-other peak incidence ,which occurred from November to December .Most of the patients were under 5 years-old .The number of male cases was larger than that of the female .The number of scattered children cases was larger than that of the nursery children .More cases were reported in rural area than in urban area .Coxsackie virus A16(Cox A16) and other enteroviruses were the predominant strains of HFMD ,however enterovirus 71(EV71) infected cases increased sharply between 2011and 2012 .Enterovirus 71(EV71) inflection is the main cause of severe and death of HFMD .Conclusion The prevalence of HFMD in Yongchuan district had signifi-cant seasonal ,sex and age-specific ,regional differences and etiological characteristics .It was very important to make practical man-agements to prevent occurrence of HFMD according to these epidemiological characteristics .

Objective To evaluate the effects of health education of house-to-house visit in malaria prevention and control in the border and minority areas. Methods A health education of house-to-house visit in malaria prevention and control was car-ried out,and baseline and follow up surveys were conducted by qualitative and quantitative methods to document the changes of local villagers’knowledge,attitudes and behaviors(KAP)of malaria prevention and control in 2 counties of Yunnan Province, and the results before and after the interventions were analyzed and compared. Results After the intervention,the cognition rates about malaria symptoms and signs,transmission mode,preventive measures and health-seeking behaviors were 99.3%, 98.9%,79.9%and 99.3%respectively in the local residents,and those were 39.2%,8.2%,47.0%and 49.9%respectively be-fore the intervention,and all the differences were statistically significant(P all<0.01). Conclusions KAP related to malaria among the targeting population has improved after the interventions and the house-to-house visit is an effective community-based health education approach.

OBJECTIVE: To explore the effects of Yiweining Recipe (YWNR), a compound Chinese herbal medicine, on expressions of metalloproteinase-2 (MMP-2) and cyclooxygenase-2 (COX-2) mRNAs in rats with endometriosis (EM). METHODS: Operational self-transplantation was applied in establishing the rat models. Detection of MMP-2 and COX-2 mRNAs was conducted with hybridization in situ. RESULTS: There were significant differences in the expressions of MMP-2 and COX-2 mRNAs between the untreated group and the high-dose YWNR-treated group. YWNR could reduce the expressions of MMP-2 and COX-2 mRNAs. CONCLUSION: YWNR can treat EM through reducing the positive expressions of MMP-2 and COX-2 mRNAs.