A high sensitive and selective imprinted electrochemical sensor based on cobalt nanoparticles/gra-phene modified carbon electrode was prepared by electropolymerization technqiue with p-tert-octylphenol as the template and pyrrole as the functional monomer. The electrochemical behaviors of the imprinted sensor were evaluated with cyclic voltammetry and differential pulse voltammetry. The response currents of the imprinted electrochemical sensor exhibited a linear relationship toward the negative logarithm of p-tert-octylphenol concentrations ranged from 1. 0í10-13 mol/L to 1. 0í10-7 mol/L (R2=0. 994) with the detection limit of 3 . 7í10-14 mol/L ( S/N=3 ) . The imprinted electrochemical sensor was respectively applied to the determina-tion of p-tert-octylphenol in rain water, lake water and drink with the recoveries of 92. 4%-102. 0%.

Objective To compare postoperative pulmonary infection in patients undergoing surgical operation at different surgical opportunities.Methods Patients who underwent surgical operation in a hospital from January to December 2014 were surveyed retrospectively,patients' data were reviewed,patients with postoperative pulmonary infection were compared.Results A total of 20 343 surgical patients were investigated,227(1.12％) had postoperative pulmonary infection.Postoperative pulmonary infection rate in patients undergoing emergency operation was higher than that of selective operation (5.13 ％ vs 0.70 ％,x2 =307.49,P＜0.001).Postoperative pulmonary infection rates in patients undergoing emergency neurosurgical,general surgical,and cardiothoracic surgical operation were all higher than selective operation (all P ＜ 0.001).Among patients with pulmonary infection following emergency operation,the proportion of those who aged ＜60 years,with preoperative irrational antimicrobial use,cardiovascular disease,hypertension,and tracheotomy were all higher than those who received selective operation (all P＜0.05);the proportion of patients with cancer is lower than that of elective surgery patients(P＜0.05).Conclusion Postoperative pulmonary infection rate in patients undergoing emergency operation is higher than selective operation,postoperative pulmonary infection rates in patients undergoing emergency neurosurgical,general surgical,and cardiothoracic surgical operation are high.Patients with cardiovascular disease and hypertension are the focus of protection;for elective surgery,cancer patients are the focus of protection.

Objective To investigate the coupling of tibial rotation and extension-flexion motion of knee joint both before and after total knee arthroplasty. Methods Six fresh-frozen left lower limbs from cadavers were tested using a modified Oxford motor rig for the knee joint. Anatomically based multiple loadings of the quadriceps mechanism were applied (Vastus medialis: 24.5 N, Vastus intermedius/rectus femoris: 29.4 N, Vastus lateralis: 19.6 N). The tibial rotation was tracked using a custom-made laser tracking device while the tibial-femoral flexion was measured with goniometer. Total knee arthroplasty (TKA) was performed using ?PFC-PS posterior cruciate ligament substituting knee system. Results Before TKA, when the knee flexed 10?, 20?, 30?, 60?, 90?, 120? and 150?, tibia rotated 5.1??2.3?, 9.3??3.3?, 10.2??4.8?,11.7??3.5?, 13.5??8.4?, 22.0??8.6? and 29.6??9.3? respectively. After TKA, tibia rotated -2.2??1.7?, -2.5??1.5?, -2.0??1.3?, 1.7??2.5?, 3.9??2.4?, 13.5??6.1? and 18.6??4.7? respectively (Tibial rotation was defined as 0? in knee extension; internal rotation as positive and external rotation as negative). Conclusion The tibial internal rotation is coincident with tibial-femoral flexion, its magnitude of tibial rotation varies in different degrees of knee flexion. The tibial internal rotatation is significant in early knee flexion(0? to 30?), then enters into a platform stage on knee bending from 30? to 90?, Once the knee bends over 90?, the tibia rotates internally markedly again, maximum internal rotation is achieved in fully flexion, probably due to relaxation of soft tissue. After TKA, in early flexion (0? to 30?) the external rotation occurs abnormally, but later on 30? to 150?, it rotates again intenally as normal.

Objective To observe effect of the pulmonary injury and the dynamic changes of the blood gas index on the mortality rate of the dogs suffered from underwater blast injury. Methods 38 adult dogs were brought out underwater blast injury by TNT. The dogs that died on the spot were anatomized immediately, while the survivors were anatomized after 6 hours; the blood samples were taken before the explosions, 30min and 6 hours after them to analyze the blood gas index by i-STAT. Results Most of the lung injuries were pulmonary hemorrhage and edema; the positive impulse of the blast wave and the severity of the lung injury were closely related to the mortality rate; the frequency of the respiratory and the blood oxygen and the carbon dioxide pressure can roughly exhibit how severe the lungs were injured. Conclusions The severe hypoxia induced by lung injury is the main cause of the early death; correlation between the severity of the injury and the positive impulse of blast wave is very obvious.

Objective To investigate the medial-lateral tilting of patella in two different coordinate systems before and after total knee arthroplasty (TKA). Methods Six fresh-frozen left low limbs from cadaver were tested using a modified Oxford Rig. Anatomically based multiple loading of the quadriceps mechanism was applied(Vastus medialis 24.5 N, Vastus intermedius/rectus femoris 29.4 N, Vastus lateralis 19.6 N). In a three dimensional coordinate system, patellar tilting was tracked using a custom-made Laser tracking device. The femoral trochlea was used as the other coodinate system in skyline view of patellar-femoral joint. Total knee arthroplasty was performed using PFC? posterior cruciate ligament substituting knee system. The tilting angles of patellar were measured before and after TKA. Results In three dimensional coordinate system, when knee flexed 30?,60?,90?,120?,150?, the patella titled :-3.10??2.25?,2.50??1.07?,5.46??2.60?,6.32??2.16?,-2.10??1.90? respectively before total knee arthroplasty was undertaken. After total knee arthroplasty, the patella tilted 3.24??0.35?,2.30??1.39?,1.65??1.17?,1.29??1.03?,-0.86??1.42? respectively. When femoral trochlea was taken as coordinate, the patella tilted 0??0?,0??0?,0??0?,0.24??0.35?,-3.21??1.80?; 0??0?,0??0?,0??0?,0??0?,-1.12??1.20? respectively both before and after TKA (Lateral patella tilting was defined as positive and medial patella tilting, negative). Conclusion Even the relationship between patella and femoral trochlea remains normal, the mode and magnitude of patellar tilting changes significantly after TKA. In early flexion of knee joint, patella tilts medially before TKA while it tilts laterally after TKA. After TKA, patella tilts less laterally than it does before TKA when a knee flexes from 60 to 120 degrees.

Objective To investigate the clinical application of alpha lipoic acid on early diabetic nephropathy(DN).Methods Seventy patients with early diabetic nephropathy were randomly divided into two groups.Patients in control group were treated with regular glycemic control methods,while patients in treatment group were received alpha lipoic acid 300 mg static drop treatment for two weeks beside regular treatment.High sensitivity C reaction protein,microalbuminuria and urine creatinine were measured before and after the treatment.Microalbuminuria and urine creatinine were re-measured three months later.Results At the end of two weeks treatment,the levels of high sensitivity C reaction protein in the treatment group decreased from (3.92 ± 4.56) mg/L to (2.24 ± 2.49) mg/L,and there was significant difference (t =2.803,P ＜ 0.05).Microalbuminuria decreased from (127.18 ± 76.91) mg/L to (84.50 ± 122.87) mg/L,and there was significant difference (t =2.501,P ＜ 0.05).The ratio of microalbuminuria and urine creatinine in treatment group decreased from(28.95 ± 30.49) mg/mmol to(13.76 ± 20.83) mg/mmol,and there was significant difference (t =3.616,P ＜ 0.05).While there was no significant difference in the control group before and after regular waglycemic control.At three months after treatment,there were no significant difference regarding of microalbuminuria,the ratio of microalbuminuria and urine creatinine between treatment and control groups (P ＞ 0.05).Conclusion Alpha lipoic acid might be with ability of decreasing the levels of microalbuminuria of diabetic nephropathy in the short term,but further study is needed to verify whether alpha lipoic acid can decrease the level of microalbuminuria in the long term.

Objective To retrospectively study the results of endoscopic manifestation pathology,and treatment of colonic polyps. Methods Clinical data of 121 patients diagnosed with colonic polyps and treated by endoscopy between November 2002 and September 2009 were studied. Complete colonic investigation was done by Olympus PCF240I electron endoscopy. Colonic polyp excision was done by high frequency electric coagulation. Results All patients had bloody stool with mucus for 1 week to 8 years. Ninty four(77.7%)patients had a single polyp,6(5.0%)had two polyps,21(17.3%)with multiple polyps,and 5 patients had familial polyposis coli. The size of the polyps ranged from 0.3 cm to 4 cm and the morphology of Yamada Ⅰ to Ⅳ. The pathological changes were juvenile polyps,inflammatory polyps,polypoid formation,and canalicular adenoma. Most common pathology types were Yamada Ⅳ and juvenile polyps,107 of the 121 patients(88.4%)had juvenile polyps,and one was found to have malignant transformation. 115 patients accepted high frequency electric coagulation excision under general anesthesia,without complication. Conclusions Colonic polyp is one of the common diseases in children. Children should be checked by total colonoscopy in time when they present with bloody stool,anemia,rectal polyps prolapse or intussusception. Polypectomy under endoscope is a most safe and reliable treatment method when the diagnosis is confirmed. For isolated juvenile polyp,regular recheck is not necessary after polypectomy except when bloody stool recurs. Regular follow up by colonoscope is necessary for juvenile polyp combined with adenoma and adenomatous polyps. Colonoscope is necessary at any time when bloody stool occurs. Familial polyposis coli is difficult to be treated by endoscopy,thus surgical procedure is suggested.

Objective:To observe the clinical effect of acupuncture combined with tuina manipulation for thoracic facet joint disorder. Methods:A total of 93 eligible cases were randomly allocated into an observation group and a control group. Patients in the observation group (n=46) were treated with acupuncture combined with tuina manipulation, whereas patients in the control group (n=47) were treated with tuina manipulation alone. The treatment was done once a day, for a total of 3 times. Therapeutic efficacies were then evaluated according to scores on signs and symptoms.
Results:After treatment, there were intra-group statistically significant differences in scores of eight signs and symptoms (all P<0.01); and the between-group differences were statistically significant in scores of eight signs and symptoms (all P<0.05). After three times of treatment, the recovery rate in the observation group was 54.4%, versus 25.4% in the control group, showing a statistical significance (P<0.05).
Conclusion:Acupuncture combined with tuina manipulation can obtain better effects than tuina manipulation alone for thoracic facet joint disorder and is therefore worth further clinical application.

0.6). And there was high internal consistency in major instruments. The validity was examined by comparing the responses of informants and responses (good standards) of the target person in normal control group. There was also a high validity(r=0.21~0.61).Conclusion: The information reconstructed from the informants has good reliability and validity. It is possible to study suicide with psychological autopsy in China.

Objective To investigate the therapeutic effect of glycyrrhiza active substance on guinea pig model of vitiligo,and to clarify its mechanism on promoting synthesis of melanin,and to provide the basis for its clinical application.Methods Guinea pigs decolorized by H2O2 were used as experimental models,and normal control group was set up.After treatment of glycyrrhiza active substance in three doses groups(20,40,and 80 mg?kg-1),the therapeutic effect was observed by visual observation,macrography,histological examination as well as immunohistochemical study.Results The significant differences of skin color among control group,model group and treatment groups were observed by macrography.The total effective rates in 40 or 80 mg?kg-1 groups were higher than that in control group(P