Objective:To improve equipment intact rate and utilization rate, make the hospital better social and economic benefits. Methods:Through the cultivation of high-tech talent, the use of high-tech means, the use of high-tech repair tools, repair and maintenance of science, strengthening external relations, making full use of social resources. Results:Construction of a high level of equipment repair team gradually, make full use of computer and network, the use of new tools to improve the quality of repair, repair. Scientific maintenance and repair, make full use of social resources, ensure medical equipment intact rate. Conclusion:Improve the medical equipment intact rate;give full play to the comprehensive benefits of modern medical equipment, to create greater social and economic benefits for the hospital.

Phage display is a widely used gene engineering high technology.Through the display of exogenous peptides or proteins fused specific coat protein on the surface of phages,it is possible to construct proteins or peptides libraries and screen interesting proteins,peptides and antibodies successfully.Most commonly used phage display technology is phagemid/helper phage system,in which helper phages are essential for the replication and assembly of phagemid particles.In this review,in combination with the newest research dynamic status,we summarize phagemid/helper phage double-genome system.We mainly emphasized the features and mutation mechanisms of different helper phages.We also made some prospects for the future directions,in the meanwhile,we also expect that our experience can provide some help for further maturity of the technology.

Adolescent ; Adult ; Catheterization, Central Venous ; instrumentation ; Device Removal ; Humans ; Male ; Vena Cava, Inferior ; Vena Cava, Superior

Armillariella mellea polysaccharide ( AP ) was isolated from solid fermented Armillariella mellea. AP ( 100 mg/kg?d, ig ? 5 d ) increased the production of serum hemolysin in normal mice as well as in im-munodepressed mice induced by cyclophosphamide. At the dose of 50 mg/kg?d ig?5d, AP also caused a significant increase of spleen plaque forming cells ( PFC ) in normal mice. AP ( 10, 50?g/ml ) markedly enhanced Con A-induced lymphocyte proliferation of mouse spleen cells in vitro, but it had no potentiating effect on delayed cutaneous hypersensitivity ( DCH ) to 2,4-dinitrochlorobenzene ( DNCB ) in normal mice. AP ( 100 mg/kg/d, sc? 7d) increased both clearance rate of iv charcoal particles and phagocytic activity of ma-crophages of abdominal cavity in normal mice.

Humans ; Infant, Newborn ; Mucormycosis ; pathology

Objective To investigate the differentiated thyroid carcinoma diagnosis and treatment options. Methods From Feb. 2002 to Jan. 2008,78 patients received different surgical resection regarding the type of tumor size,number of tumor,ages and jugular lymphatic metastasis. Patients with unilateral differentiated thyroid carcinoma underwent the resection of ipsilateral isthmus of thyroid lobe or plus partial contralateral gland,and those with bilateral-lobe underwent total thyroidectomy or near-total thyroidectomy. High-risk patients (age >45 years,tumor size >4 cm,tumor size ≤4 cm,but surpass the envelop of thyroid) were performed by functional neck dissection or lymph node dissection of central region (Ⅵ area) besides postoperative endocrine therapy. Results Eleven cases underwent the resection of ipsilateral lobe with isthmus, 19 cases underwent surgical removal of ipsilateral lobe with isthmus plus partial contralateral gland,26 cases underwent near-total thyroidectomy and 22 total thyroidectomy. 25 cases underwent functional neck dissection, 23 cases underwent neck dissection of central region. There were 68 papillary thyroid carcinoma (87. 18%), 10 follicular thyroid carcinoma (12. 82%). There were 26 cases with lymphatic metastasis of Ⅵ area. Postoperative complications included 12 cases (15.38%) with deadlimb caused by hypocalcemia, 8 cases (10.26%) with transient recurrent nerve paralysis,2 cases (2.56%) with permanent injury of recurrent laryngeal nerves, 3 cases (3. 58%) with chylous fistula. Seventy-four(94. 87%) cases were followed up postoperatively for a period from 6 months to 6 years,which showed that no death occurred,but 6 relapsed with jugular lymphatic metastasis,after reoperation no distant metastasis occurred. Survival rate was 97. 30% (72/74). Conclusion Treatment of the differentiated thyroid carcinoma should be based on the size of tumor,number of tumor,age and jugular lymphatic metastasis. Lymph node dissection of central region was necessary for high-risk patients of differentiated thyroid carcinoma.

Objective To observe the effect of levocarnitine and trimetazidine on left ventricular mass index in patients with maintenance hemodialysis (MHD),and to explore the safety and efficacy of the two drugs when used in combination.Methods 48 cases of MHD were randomly divided into control group and treatment group,24 cases in each group.On the basis of routine treatment,treatment group was treated with L -carnitine 1.0g by intravenous, 3 times per week,and trimetazidine tablets 20mg,3 times daily at the end of each dialysis.The control group was only treated with L -carnitine.The course of treatment was 12 months.The left atrial diameter (LAD),left ventricular end diastolic diameter (LVDD),left ventricular end diameter (LVDS),interventricular septal thickness (IvST),left ventricular posterior wall thickness (LVPWt),left ventricular ejection fraction (LVEF),stroke volume (SV),left ventricular mass index calculation were detected and compared before and after treatment in the two groups.Results After treatment,the LAD,LVDd,LVDs,IvST,LVPWt in the control group were (40.25 ±1.73)mm,(51.16 ± 3.17)mm,(32.52 ±2.86)mm,(11.16 ±1.23)mm,(10.23 ±1.19)mm,which were decreased compared with before treatment [(42.63 ±1.82)mm,(53.71 ±3.26)mm,(35.83 ±3.12)mm,(12.51 ±1.39)mm,(11.76 ± 1.37)mm],and the LAD,LVDd,LVDs,IvST,LVPWt in the treatment group were (37.61 ±1.86)mm,(47.53 ± 3.18)mm,(29.71 ±2.93)mm,(10.46 ±1.32)mm,(9.14 ±1.32)mm,which were decreased compared with beforetreatment [(42.89 ±1.91 )mm,(54.18 ±3.29)mm,(35.76 ±3.27)mm,(12.49 ±1.35 )mm,(11.73 ± 1.41)mm](t control group =4.643,2.747,3.831,3.563,4.130,t treatment group =9.702,7.120,6.750,5.209, 6.569,all P <0.05 ),and each index of the treatment group was significantly lower than the control group (t =5.091,3.961,3.362,2.901,3.005,all P <0.05 ).The LVMI of the control group and treatment group was (121.63 ±7.16)g/m2 ,(115.49 ±7.91)g/m2 after treatment,which were decreased compared with before treatment [(127.32 ±7.51)g/m2,(126.87 ±7.28)g/m2 ](t =2.686,5.186,all P <0.05).The EF and SV of the control group were (58.16 ±4.35)%,(43.61 ±4.72)mL after treatment,which were increased compared with before treat-ment[(55.32 ±4.17)%,(40.52 ±4.13)mL](t =2.686,5.186,all P <0.05).The EF and SV of the treatment group were (61.26 ±4.13)%,(46.25 ±4.17)mL after treatment,which were increased compared with before treat-ment[(55.28 ±4.51)%,(40.81 ±4.96)mL](t =4.791,4.113,all P <0.05).After treatment,LVMI in the treat-ment group was lower than that in the control group,SV and EF were higher than those in the control group (t =2.819,2.532,2.053,all P <0.05).Conclusion Compared with single levocarnitine,the therapy of levocarnitine and trimetazidine can better reduce left ventricular mass index in MHD patients and improve the cardiac structure and function,which is safe and effective.

Objective To study the influence of different positions in the isokinetic muscle test of knees by CON-TREX Biomechanical Test and Training System, so as to select the suitable conditions for forensic identification of muscle strength test. Methods Fifty-two healthy volunteers joined the isokinetic muscle strength test in unfixed and fixed position, respectively and in two kinds of angular speed (60°/s and 30°/s). The differences of peak torque (PT) and peak torque angle (PTA) between bilateral knee flexor and extensor were statistically analyzed. Results In the unfixed position, under the two speed, there was statistically significant difference in PT between bilateral knee flexor and extensor (P<0.05);while in the fixed position, under the two speed, there was no statistically significant difference (P>0.05). In any kind of conditions, the PTA of bilateral knee flexor and extensor did not have statistically signifi-cant difference(P>0.05). Conclusion The position of the subject influences the results of PT. So the po-sition of subject in knees isokinetic muscle test should be regulated.

Child ; Critical Care ; Humans ; Intensive Care Units, Pediatric ; Medical Records ; Severity of Illness Index

OBJECTIVE: To study the inhibitory effect of Longzhi extracts (extracts from a Chinese herbal compound) on the growth of transplanted hepatoma H22 and sarcoma S180 in mice. METHODS: Certain dosage of Longzhi extracts was dissolved into distilled water to obtain the suspension of definite concentration. The suspension of 0.2 ml was planted on the right forefoot of each mouse. The mice were randomly divided into groups 24 hours later and treated for 7 days. One day after the treatment stopped, the mice were sacrificed and the tumor masses were taken out and weighed. RESULTS: The inhibition rates of Longzhi extracts on the tumor of transplanted H22 and S180 were 63% and 41% respectively. CONCLUSION: Longzhi extracts has antitumor action.