This article analyses and summarizes the clinical maintenance work of Elekta Precise Linac in five years.Afer the further research on its performances and errors,a better way is found to solve the main problem of clinical electronic linac,i.e.the way to reduce the Stop Rate of Linac in Radiotherapy.

The risk factors of traffic crash include drinking/drunk drive, accident proneness, fatigue driving, speeding, and poor vehicle quality. This article introduces the protection, emergency treatment, and basic scientific research of road traffic injury (RTI). As a public health issue, RTI is preventable, and personal factor is a key problem. It is important to establish an accurate and comprehensive RTI database, which may provide necessary information for the epidemiological research and crash prevention. The author also gives some suggestions on road traffic safety development in our country.
Accidents, Traffic ; prevention & control ; Databases, Factual ; Epidemiologic Research Design ; Humans ; Wounds and Injuries ; prevention & control ; therapy

Analysising of the students' role will contribute to improve the quality of clinical teaching.The core of the students' role is “student”,they are the principal part of the learning activities.At the same time,students have on the shoulders the practice role of clinical nurse.The remarkable thing is that the students have kinds of needs of different levels,they should be regarded as the holistic person who have the individual otherness and commonness and the inimitable value.The characteristic of students can influence their behaviors in clinical activities.

This paper discusses the problem of the periods of Medical Ethics. The writers suggest that Medical Ethics should be distingwished three periods: Medical Ethics, Biomedical Ethics and Bioethics.

Objective:To confirm the analogue of Somatostatin OCT and NC 8 12 on the colon tumor cell growth in vitro and vivo.Methods:(1)Two colon cancer cell lines HCT116,LOVO of which cell proliferation was measured with MTT were treated with different analogue of Somatostatin in vitro.(2)The nude mice were implanted s.c.with colon cancer cell line HCT116,then were injected s.c. with OCT and NC 8 12.Results:(1).Cell proliferation of HCT116 induced by Insulin was obviously inhibited by OCT or NC 8 12 at 10 -8 mol/L 24h later after the cells were incubated with them.(2)The nude mice bearing xenografts of colon cancer HCT116 were treated for 21days subcontinuously with OCT?NC 8 12?g/(kg.d)],the inhibitory effect was seen obviously.,the inhibitory effect was seen obviously.Conclusion:The Somatostatin analogues OCT and NC 8 12 can inhibit the proliferation of colon cancer cells in vitro and vivo directly.

Biliary atresia(BA) is a destructive inflammatory obliterative cholangiopathy of neonates affecting both intrahepatic and extrahepatic bile ducts.BA is more common in east Asia.Genetic susceptibility,viral infections,and immune dysregulation may be related to BA,but immune dysregulation may play a key hole in the pathogenesis of BA.A current view of the pathogenesis of BA is that it may involve both a primary perinatal hepatobiliary viral infection and a secondary generation of an autoimmune-mediated bile duct epithelial injury.The etiology of BA is unknown,but there is evidence for the involvement of immunologic dysregulation mechanisms,which will be discussed in this review.

Objective To evaluate the effect of transtheoretical model(TTM)-based health education on the self-care behaviors of patients with heart failure.Methods One hundred and fifty heart failure patients from January 2012 to June 2013 were randomly assigned to two groups,75 cases in each group.The patients in the experimental group received TTM-based health education;the patients in the control group received conventional health education.All patients were investigated with the Self-Care of Heart Failure Index (SCHFI) at baseline,1 month and 3 months after intervention.Results After intervention,the scores of self-care maintaining,self care management and self care confidence in the experimental group were significantly higher than those in the control group.Conclusions TTM-based health education can effectively improve the self-care behaviors of patients with heart failure.

Objective To explore the relationship between self- management and DOSE index for patients with chronic obstructive pulmonary disease (COPD). Methods The convenient sampling and Pearson correlation analysis was used in the study,a total of 81 patients was investigated with Self- Management Scale (SMS) for COPD patients and DOSE index. Results The relationship of symptom management and DOSE index for COPD patients was a positive correlation (r=0.259, P<0.05);with self- efficacy was a negative correlation(r=-0.288, P<0.05).But self- management, daily life management, emotion management and information management with DOSE index were no correlation (P>0.05). Conclusions Through health education, nurses should strengthen to effectively help patients manage symptoms, enhance self- efficacy, improve the patients′quality of life.

Objectives:The objective of this study is to make suggestions for the internet medical development. Methods:Based on the field survey, this paper analyzes three kinds of internet medical mode in China, and sums up the pros and cons. Results:The internet medical has the ability of technically providing healthcare by internet, and meeting the patients’ essential health care requirements. The problems mainly include health insurance, regional dis-tribution, electronic prescription audit, electronic medical record and safekeeping the record files, operation supervi-sion etc. The corresponding countermeasures include elaborating laws, gradually completing the internet medical and health insurance cooperation, the government’s regional division handling, setting up a special supervision department in the hospitals etc. Conclusion:It is important to clear the internet medical related problems and develop a model which is suitable for healthcare institutions.