Titanium & titanium alloy are popular in dentistry as dental material because of their good mechanical properties and extremely good biocompatibility. The bonding strength between the titanium and the resin agent is the decisive factor in evaluating the success of resin-bonded restoration. Appropriate surface treatment on the titanium is an effective way to reinforce the bending strength. The purpose of this review is to summarise the relevant studies and introduce some latest findings.

Objective To study the best process of puerarin refined.Methods Results of the research on the selection of dissolved agent, agent and precipitator, and column chromatography of the resin, alumina, silica gel, fly ash and activated carbon were used to study the combined process. Results The average purity of optimization of the three craft products were 99.06052%, 99.22620% and 99.69880%.The yield of average values were 44.180%, 44.438% and 42.642%.Conclusion This study optimized the optimum process is feasible, puerarin purity is more than 99%, the yield is above 40%.

Objective:To design an intelligent system of leak detection for AK200Shemodialysis machine so as to fast troubleshoot the range of leaked point for helpingengineer. Methods: The likely leaked part of flow paths of hemodialysis were simplified basedon routine detection experiment and the statistical record and data of faults. And then, testmode of pressure when hemodailysis implemented self-inspection for leakage was imitated. There was a air pumpwas connected with aimed flow paths, and the positive and negative pressure generated by controlling an externalair pump and the connected magnetic valve were applied at different time and different section, respectively. Afterincreased pressure, depended on the comparison of intra pressures from pressure sensors for one part of pipelinebetween pre- and post of one spell to analyze and decide whether this section exist leak. And the judgment standardwas if the difference of pressure was less than 5mmHg, there was not leak in this flow path, otherwise, the likely leakpoint should be troubleshot in further detection. Results: 183 detections were implemented at AK200S/AK200USwhich once happened alarm of leakage. And in the 183 detections, the detection system for leakage has found theranges of leaked point in 171 detection. The distribution of leaked points was: 73 times were from filter to DRVAsection, 19 times were from DRVA section to DIVA section, 79 times were from DIVA section to champ of flexiblepipe at terminal of EVVA. On the other hand, in the leaked points, 162 points were at seal ring, 1 point was at filmof valve, 8 points were at connector, and the success rate of detection for leaked fault was more than 90%. Besides,the success rate of detection for leakage on flow paths of prepare troubleshooting under normal temperature was100%. Conclusion: The detection system of self-dependant development for leakage can help engineer to save timeof troubleshooting for leaked point and enhance the work efficiency.

Objective To explore the relationships among college students' trait anger,violent attitude and aggressive behavior.Methods A total of 991 college students were surveyed with the Trait Anger Scale,the Violent Attitude Questionnaire and the Aggression Questionnaire.Results (1)College students' scores on trait anger,violent attitude and aggressive scales were 17.99±3.94,3.52±2.20 and 70.12±14.67,respectively.(2) There were significant correlations among college students' trait anger,violent attitude and aggressive behavior(r=0.172-0.835,P<0.01).(3) Trait anger had a direct impact on aggressive behavior,as well as indirect effects through violent attitude.The direct effect of trait anger on aggressive behavior was 0.53,the indirect effect of violent attitude was 0.13,the total effect was 0.66,and the indirect effect was 20%.(4)The experience of parenting violence moderated the mediating effect of voilent attitude,and violent attitude moderated trait anger and aggression in those who didn't experience parenting violence(β=0.28,P<0.01),while the mediating effect was not significant in those who experienced parenting violence(β=-0.24,P=0.23,SIE=-0.166,P=0.28).Conclusion Violent attitude partially mediates trait anger and aggressive behavior,which is moderated by experienced parenting violence.

Objective To investigate the correlation between the coagulation function and fibrinolytic activity with deep venous thrombosis (DVT) after traumatic fracture operation.Methods One hundred and thirty-four cases of traumatic fracture from April 2010 to May 2014 were divided into the DVT group(24 cases) and non-DVT group,and at the same time 110 healthy people were selected as the control group.The venous blood at different time points was collected for observing the levels change of prothrombin time (PT),activated partial thromboplastin time (APTT),fibrinogen (FIB),platelet aggregation rate (PAgT),dipolymer (D-D),thrombin antithrombin complex (TAT),plasminogen activity (PIg) by using appropriate methods.Results There was no difference in APTT and PT groups among the groups(P>0.05).Preoperative FIB,PAgT,D-D and TAT levels was the DVT group >non-DVT group > control group,while the level of PIg was the DVT group0.05).Conclusion The increase of D-D and TAT is closely related with DVT in traumatic fracture and,which is an independent risk factor.

A systematic review is based on randomized controlled trials (RCTs), and the reliability of its conclusion is closely related to the quality of original literature. The low quality of existing RCTs in China leads to the failure of conclusive findings in systematic reviews when evaluating the effectiveness of interventions. It is almost universal for systematic reviews to draw the conclusion that "further well-designed multicenter and large-scale RCTs are still required to confirm the beneficial effects of interventions". This paper analyzed the current status of RCTs in China, discussed the influence of including trials of low quality in a systematic review and assessed how a systematic review should be carried out under such circumstances. Furthermore, the methods to evaluate the quality of RCTs were introduced and evaluated. Finally, several strategies were proposed to improve the quality of RCTs in China: foster an honest academic and social environment, enhance the training of doctors on clinical research methodology, promote the implementation of clinical registration systems and strengthen the quality control of clinical research and the medical journals regulations on the quality of submitted papers.

Objective To investigate the influence of traditional Chinese medicine on nutritional status and function of immune in post-esophagectomy patients with esophageal carcinoma.Methods 70post-esophagectomy patients in our hospital were randomly divided into 2 groups:a control group (35 cases)and a observation group (35 cases).The control group were treated with postoperative nutrition programs of our hospital,while the observation group were treated postoperative nutrition programs combined with Chinese traditional medicine group in order to observe and analyze the nutritional status and the function of immune at preoperative and 7 days treatments.Results The TP/ALB/IgG/CD3+were (54.5±18.3)g/L and (50.5±11.8)g/L,(36.3±11.7) g/Land (32.8±12.2)g/L,(8.7±3.1)g/L and (7.5±2.8)g/L,(75.4±12.8)％ and (70.1±12.9) ％ in the observation group and the control group respectively,showing significant difference (P＜0.05).The CD4+/CD8+ were (2.5±0.8)and (2.1 ±0.6)in the observation group and the control group respectively,showing significant difference(P＜0.05).Conclusion The nutritional status and function of immune in post-esophagectomy patients with esophageal carcinoma were declined.Rational application of traditional Chinese medicine assisted the nutritional status and function of immune in post-esophagectomy patients with esophageal carcinoma.

The glucose metabolism pathways including glycolysis and oxidative phosphorylation in vivo.The metabolism of tumor cells depends on glycolysis,which enhances the adaptability of tumor cells to the microenvironment and promotes the proliferation of tumor cells,which is called Warburg effect.Arsenic is one of the chemical pollutants,which is widely distributed in natural environment.International agency for research on cancer (IARC) has made it clear that arsenic and its compounds are carcinogens.However,the mechanism of carcinogenesis induced by arsenic still remains obscure.Recently,researchers have found that Warburg effect plays an important role in the process of arsenic carcinogenesis.In this paper,we have reviewed the definition and function of glycolysis,its relationship with inflammation and tumorigenesis,and the role of Warburg effect in arsenic carcinogenesis.

To study the relationship between angiotensin converting enzyme(ACE) gene polymorphism and angiotensin converting enzyme activity,the polymerase chain reaction(PCR) was used to detect an insertion/deletion(I/D) polymorphism of ACE gene in its sixteenth intron.The genotype,enzyme coupling spectrophotometry were used to measure serum ACE activity among the three genotypes.Results showed that the Serum ACE activities were (337 6?92 0),(292 7?76 5 )and(243 5?58 9)u/L for genotypes DD,ID and ⅠⅠ respectively.The findings indicate that the ACE gene polymorphism closely associated with serum ACE activity.

Objective To sum up the precaution and treatment of the postoperative complications of the aged patients with cerebral impairments. Methods The clinical data of 96 aged patients with cerebral impairments were reviewed, 76 patients of which had postoperative complications. Results Among the 76 patients with postoperative complications, 24 cases died, and the death rate is 31 7%. 11 patients died of lung failure due to lung infection, 4 patients died of massive bleeding of upper digestive tract, 3 patients died of heart failure, 4 patients died of renal failure and the other 2 patients died of recurrent hematoma. Conclusions The postoperative death rate of the aged patients with acute cerebral impairment is fairly high, and the main death cause is postoperative complications, so we should treat this kind of patients in time and prevent the occurrence of complications.