Majority of humans requiring radioprotection in medical center are healthy. The most important thing is consummate radioprotection and facilities for environmental protection, and scientific arrangement of staffs and rooms as well.

Positive ratio of chest X-ray is analysed to explore whether it is reasonable chest X-ray in annual physical examination.

Objective: To investigate the possible association between the allelic variation of LAPTM4B and the genetic susceptibility of lung cancer. Methods: The genotype of LAPTM4B was analyzed in 134 unrelated healthy adult individuals and 166 patients with lung cancer by utilizing polymerase chain reaction based on special primers. The genotypical distribution of LAPTM4B was analyzed by ? 2 test. Results: The allelic frequencies of the *2 were 40.1% and 28.0% in the lung cancer group and the healthy control group respectively, which was significantly different between the two groups (P 0.002). There was a significant difference in the overall genotypical distribution between the patients and the controls (P0.005). The risk of suffering from lung cancer was increased 1.91 times in the individuals of the *1/2 genotype (95%CI: 1.178-3.110) and 3.26 times in the individuals of the *2/2 genotype of LAPTM4B (95%CI:1.338-7.929) compared with the *1/2 genotype. No association was observed between the genotypical distribution of LAPTM4B and the clinical information on patients of lung cancer such as gender, age, pathological type, differentiation classification of TNM and infection of HBV. Conclusion: This study suggests that the allele *2 of LAPTM4B might be the risk factor of lung cancer, which could be associated with genetic susceptibility of lung cancer.

Objective: The Behavior Preference for Network Game Questionnaire (BPNGQ) was developed. The aim of this study was to provide a measurement for cyberpsychology. Methods: Through interview to players, we formed the pretest of BPNGQ. Then 422 players did the pretest, and 324 players did Internet Addiction Inventory (IAI) at the same time. Results: The item difficulties of all items ranged from 0.2 to 0.7. The discriminations of 70.18% items were good. Factor analyses divided scales into five factors, which were energy of devotion, emotion of devotion, behavior of aggression, emotion of aggression and attitude of aggression. The reliabilities of the subscales and full scale ranged from 0.70 to 0.92. The scores of subscales were significantly positively related with Internet addiction. Conclusion: BPNGQ’s difficulty is appropriate, and it has good discrimination, reliability and validity.

Objective:This research mainly concerns the relationship between the behavior preference in network game and the trait of personality of players.Methods:This study surveyed 294 players by Behavior Preference in Network Game Questionnaire(BPNGQ) and Eysenck Personality Questionnaire(EPQ).Results:All scores in factors of BPNGQ ex-cluding emotion of agression had significant correlations with all dimensions of EPQ.In all traits of personality,there was significant differences between types of killer and relaxing,and no significant difference between catharsis and relaxing.Sanguineous players had lower scores in putting in energy and emotion of devotion.Bilious players had higher scores in behavior of aggression,and players of viscous had higher scores in attitude of aggression.Conclusion:Theory of behavior preference in network game has evidence of personality.Players of different personality traits display various preference in network game.

This paper introduces the development situation and mode of physician group in China, and analyzes its main legal risks and countermeasures.The main legal risks include: the nature of the Physician group is fuzzy and specific laws and regulations lack a clear stipulation;the legitimacy of the cooperative mode of the physician group is difficult to define and lacks legal protection for its contract effectiveness and implementation;the practice is driven by the interests and loopholes in legal norms and physicians may illegally transfer the patients;the multipoint practice policy is not perfect and brought legal risks for the development of the physician group.Therefore, the following measures are proposed to take adequate precautions: firstly, the nature of the physician group and its standards of supervision and taxes should be identified and clarified;secondly, the legitimacy standard for the physician group should be established for its cooperation mode to standardize the doctors` behavioral standards;and finally, we should make sure the multipoint practice policy and physician practice law are coherent during implementation.

Objective To identify and clone rat aging-related genes to provide clues for human aging mechanism. Methods Improved different display reverse transcript-PCR method was applied to identify differentially expressed genes in cortex tissues of 4-month and 24-month old BALB/c mouse. Results Forty-two cDNA fragments with differential expression were identified, and 21 with increase and 21 with decrease of expression in old mice. Among them, 17 represented genes with known protein function, 12 represented known gene sequences but their protein function was unknown, and the other 13 probably belonged to new cDNAs. Among the genes with known protein function, 2 genes were associated with oxidative stress, 3 with energy production, and 4 with protein metabolism, respectively. Additionally, gene expression alterations were also found in those related to cell apoptosis, neurodegenerative disorder, and growth and development regulation. Conclusions Rat aging might be related with the alteration of oxidative stress status, energy production and protein metabolism.

OBJECTIVE:To compare the curative effects and pharmacoeconomical efficacy of three drugs in the treatment of patients with hypertension.METHODS:A total of 90 patients with hypertension were randomly divided into three groups:30(Group A) were treated with enalapril,30(Group B) with groLosartan,and 30(Group C) with metoprolol,all with a treatment course of 6wk.The clinical effects were observed and the cost-effectiveness analysis was conducted among the three schemes. RESULTS:The total effective rates of the 3 groups (A,B,and C) were 93.1%,96.7%,and 83.3%,respectively;the incidence rates of ADR were 10.3%,10.0%,and 16.7%,respectively;the cost-effectiveness ratios were 77.39,338.78,and 180.40,respectively;The incremental cost-effectiveness ratio of Group B and C were 7 098.61 and —798.16,respectively as against Group A.CONCLUSION:Group A(enalapril) treatment programs is a more reasonable drug program.

As an important component of the social system, physician-patient relationship plays a guiding and fundamental role in creating a harmonious healthcare environment. However, due to certain social, ethical and moral factors, the current physician-patient relationship is not favorable, and various contradictions in physician-patient relationship are becoming barriers in building up a harmonious society. In order to enable medicine return to its "merciful" nature, restitute the respect for patients, the dignity of doctors, find the memorable warmth in the medical service world, hospitals must pay close attention to humanistic care in the management dimension in order to establish a harmonious relationship between doctors and patients.

OBJECTIVE: To establish a method for determining the entrapment efficiency of gemcitabine hydrochloride liposomes(GHL).METHODS: The liposome and the free gemcitabine hydrochloride were separated by ultrafiltration,and the content of free gemcitabine hydrochloride was determined by HPLC.The entrapment efficiency of gemcitabine hydrochloride liposomes was computed as well.RESULTS: The recovery rate in ultrafiltration methods was 97.8%～100.1% for blank substance versus 99.0%～100.1% for sample.The linear range of gemcitabine hydrochloride was 1.0～80.0 mg?L-1(r=0.999 3) and its average recovery rate was 98.7～101.2%,and its inter-day and intra-day RSD were all less than 3% and its average entrapment efficiency was 81.21%.CONCLUSION: The method is simple,accurate and applicable for the determination of the entrapment efficiency of gemcitabine hydrochloride liposomes.