To introduce the treatment methods and weaknesses of the advanced wounds in extensive burns patients, explain the application of ultrasonic debridement in wound repairment. Introduce the treatment equipment of the advanced wounds, and present the idea to combine bath treatment and ultrasonic debridement. To develop a ultrasonic-therapeutic tank. It is important to improve treatment methods of the advanced wounds in extensive burns patients.

Objective:To realize the development of processize, dynamic and normalizing of quality control for medical equipment, and increase the rate of submittal for inspection and work efficiency of medical equipment.Methods: Through data management of informationization platform to count the time, quantity and qualified rate of quality control for medical equipment, and to automatically reminded the number of equipment that was submitted to inspect, and to enhance the rate of submittal for inspection.Results: Through the real-time inquiry function of the operation and maintenance system, the work efficiency was enhanced, and the transformation from static state to dynamic state of the process ofcycle quality control for medical equipment was achieved, and the management for detection data of quality control for medical equipment was improved.Conclusion:Through the application of operation and maintenance system, the work efficiency of cycle quality control of medical equipment can be enhanced, and the informationization management of medical equipment can be achieved, and this system is appropriate for the management of medical equipment in all kinds of hospital.

Objective:To explore the importance of preventive maintenance (PM) of the medical equipment operation and maintenance management system in hospital quality control module. Methods:By introducing the quality control module of maintenance management system into medical equipment operation, the test data was analysed and medical equipment PM plan was developed. Results:Medical equipment PM plan can effectively reduce the failure rate of equipment, thus guaranteeing the normal operation of the equipment. Conclusion:The application of hospital medical equipment operation and quality control module of maintenance management system, can make more accurate statistics for failure cycle and failure rate of hospital equipment, implement the new PM plan, effectively reduce the failure rate and operation cost of hospital equipment, and improve equipment utilization.

Objective To explore medical equipment support in actual combat training to improve mobile medical unit in medical service support.Methods Combined with the characteristics of actual combat training,the problems and difficulty of medical equipment support were discussed in actual combat training.Results Some measures were put forward for medical equipment support such as cherishing of medical serviceman on equipment,equipment quality control and maintenance beforeutilization,effective protection and fixation,minimization of influence of instable power supply and plan preparation for loading and transport.Conclusion The study on medical equipment support in actual combat training contributes to enhancing medical support ability of mobile medical unit.

Objective This review was aimed to provide reference for production, management and use of laboratory animals by analyzing the test results on intestinal parasitic infections of mice and rats in different provinces from 1989 to 2013 in China.The results showed that the infection rates in clean and SPF mice and rats were reduced to 10%, being better than that in the past years, but the situation was still not optimistic for the control of flagellate parasites infections.

Objective: To investigate the multivoxel proton MR spectroscopy findings of brain tumors and the clinical value in differential diagnosis. Methods:Sixty patients with brain tumors underwent multivoxel proton MR spectroscopic examination with PRESS sequence. Distribution of the 60 final diagnoses of neoplasms was as follow: meningioma (n=22), glioma (n=21), lymphoma (n=3), metastasis (n=5), acoustic neuroma, pituitary tumor, PNET (n=2, respectively), vascularblastoma, arachnoid cyst, neurofibromatosis (n=1,respectively). The concentrations of NAA, Cho, Cr, Lac-Lip were obtained in the tumors and the contralateral normal brain region. The ratios of NAA/Cr, Cho/Cr, NAA/Cho, tumor NAA/normal NAA, tumor Cho/normal Cho, tumor Cr/normal Cr were calculated. Results: 1H MRS showed decreased NAA, Cr and elevated Cho. NAA concentrations in meningioma, glioma, lymphoma decreased significantly to acoustic neuroma, metastasis, but Cho in tumors changed without significance. NAA/Cr ratio was significantly lower in glioma than in acoustic neuroma and metastasis, and p value was 0.014, 0.027, respectively. No significance was found in tumor Cho/Cr data. Conclusion:Multivoxel proton MR spectroscopy is available for study of tumor metabolites. The tumor NAA/normal NAA, NAA/Cr were helpful for the diagnosis and differential diagnosis of intracranial tumors.

Objective To study way of unloading and positioning of the new type medical shelter. Methods Through repeated testing and practical application, the ways of "3-lines" is used in the ground precession standardization. The first line is guard line of the left marginal of the shelter, the second is allocation line of the end part of the shelter and the third is front wheel alignment line of the whole unloading vehicles. Based on the lines, vehicles carrying shelters access to the ground in accordance with the order of three channel shelters ahead of five functional shelters. Results The real time of the shelter started is reduced to 35min, much lower than the time designed of 4h. Conclusion The application can be carried out precise positioning and improve the speed of the equipment spread.

Clustered regularly interspaced short palindromic repeats (CRISPR) is an acquired immune system existing in archaea and bacteria with the long-term process of evolutionary.CRISPR/Cas9 gene editing system is a new type of gene editing technology developed based on the system.CRISPR/Cas9 is a more efficient method for gene targeting than the previous methods.It has been successfully applied for gene-modified of eukaryotes since 2012,but the reports about pathogenic microorgaisms are rarely.Here,the research progress in the structure,mechanism of CRISPR/Cas9 system and its applications on pathogenic microorgaisms is reviewed.

AIM:To investigate the regulatory role of retinoid X receptor(RXR)in oxidative stress response of rat type Ⅱ alveolar epithelial cells(AECII)induced by hypoxia/reoxygenation(HR).METHODS:The AECII were di-vided into control(C)group,HR group,HR+solvent dimethyl sulfoxide(DMSO)group(HD group),HR+RXR agonist 9-cis-retinoic acid(9-RA)group(RA group),and HR+RXR antagonist HX531 group(HX group).Cell Counting Kit-8(CCK-8)method was used to measure the cell viability.Immunofluorescence staining was used to detect the expression of surfactant protein A(SP-A)and RXRα in AECII.Kits were detected to the levels of superoxide dismutase(SOD)and malondialdehyde(MDA)in cells.Transmission electron microscopy was used to observe the ultrastructural changes of the cells.Western blot was used to detect the protein level of nuclear factor E2-related factor 2(Nrf2).RT-PCR was used to detect the expression level of Nrf2 mRNA.RESULTS:Compared with C group,the cell viability and SOD activity in HR,HD,RA and HX groups were decreased significantly(P<0.05),the MDA content were increased significantly(P<0.05),the Nrf2 mRNA and protein expression levels were decreased significantly(P<0.05 or P<0.01),and the immuno-fluorescence expression of RXRα was significantly increased(P<0.01).Compared with HR and HX groups,the cells in RA group showed significantly increased cell viability(P<0.05),increased SOD activity(P<0.05),decreased MDA con-tent(P<0.05),increased Nrf2 mRNA and protein expression levels(P<0.01),and significantly increased immunofluo-rescence expression of RXRα(P<0.01).CONCLUSION:Hypoxia/reoxygenation can aggravate the oxidative stress re-sponse of rat AECII,and RXR agonist intervention can alleviate HR-induced rat AECII injury by inhibiting oxidative stress.

BACKGROUNDInsulin resistance (IR) plays an important pathophysiological role in the development of diabetes, dyslipidemia, hypertension, and cardiovascular disease. Moreover, IR can occur even in non-obese people without diabetes. However, direct detection of IR is complicated. In order to find a simple surrogate marker of IR early in non-obese people, we investigate the association of commonly-used biochemical markers (liver enzymes and lipid profiles) with IR in urban middle-aged and older non-obese Chinese without diabetes.

METHODSThis cross-sectional study included 1 987 subjects (1 473 women). Fasting blood samples were collected for measurement of glucose, insulin, liver enzymes, lipid profiles and creatinine. Subjects whose homeostasis model of assessment-IR (HOMA-IR) index values exceeded the 75th percentile (2.67 for women and 2.48 for men) of the population were considered to have IR. The area under the receiver operating characteristic curve (ROC) was used to compare the power of potential markers in identifying IR.

RESULTSTriglycerides (TG) and ratio of TG to high-density lipoprotein cholesterol (TG/HDL-C) discriminated IR better than other indexes for both sexes; areas under the receiver operating characteristic (ROC) curves (AUC) values were 0.770 (95% confidence interval 0.733-0.807) and 0.772 (0.736-0.809), respectively, for women and 0.754 (0.664-0.844) and 0.756 (0.672-0.840), respectively, for men. To identify IR, the optimal cut-offs for TG and TG/HDL-C ratio were 1.315 mmol/L (sensitivity 74.3%, specificity 71.0%) and 0.873 (sensitivity 70.1%, specificity 73.4%), respectively, for women, and 1.275 mmol/L (sensitivity 66.7%, specificity 74.4%) and 0.812 (sensitivity 75.8%, specificity 69.2%), respectively, for men.

CONCLUSIONTG and TG/HDL-C ratio could be used to identify IR in urban middle-aged and older non-obese Chinese without diabetes.

Aged ; Alanine Transaminase ; blood ; Aspartate Aminotransferases ; blood ; Cholesterol, HDL ; blood ; Cross-Sectional Studies ; Diabetes Mellitus ; blood ; Female ; Humans ; Insulin Resistance ; physiology ; Liver ; enzymology ; Male ; Middle Aged ; Triglycerides ; blood