Objective To study effects of hydrated rate on compressed deformation properties of natural articular cartilage.Methods The mass losses of pure cartilage,subchondral bone and cartilage sample were measured under different volatilization time with constant vacuum temperature container of 40 ℃,and confined compressed deformation of different hydrated rates was measured using UMT-2 multi-specimen test system.Combined with cartilage structural equation originated by Mow,the aggregated modulus and permeability of cartilage tissue were obtained.Results The mass losses of pure cartilage,subchondral bone and cartilage sample functioned with a non-linear ascending relation with volatilization time in the environmental temperature of 40 ℃.The volatilization time for different hydrated rates of 75%,50%,25%and 0% was 17 min,35 min,54 min and 100 min,respectively.Higher hydrated rate produced more compressed deformation,lower aggregated modulus and higher permeability.Conclusion The viscoelastic mechanisms of flow-dependence and flow-independence are manifested by compressed deformations while the aggregated modulus and permeability could quantitatively depict the mutual relation between hydrated rate and compressed deformation.

Adenoma, Pleomorphic ; diagnosis ; Diagnostic Errors ; Humans ; Lymphoma, Non-Hodgkin ; diagnosis ; Male ; Middle Aged ; Palatal Neoplasms ; diagnosis ; Palate, Hard

Objective To establish an influencing factors system for the implementation effect of the vertical integration of services between the hospitals and community health service institutions.Methods Primary data related to influencing indicators were collected by literature review,questionnaire method and in-depth interview,and then the analytic hierarchy process (AHP) and Delphi method were used for the construction of final influencing factors indicator system.Results An influencing factors indicator system which coincides with the status of the vertical integration between hospitals and community health service institutions in Nanjing,Wuhan and Zhenjiang was established,including 4 firstlevel indicators,10 second-level indicators and 36 third-level indicators.Conclusion This study can provide a basis for hospitals and community health centers to improve the integration service system,and fill the gap of research on the influencing factors of the vertical integration of the domestic health care system,which are meaningful for the vertical integration of health care system in other districts and patterns.

0.05), but did inhibit activity of iNOS (P

Objective To investigate the clinical significance of intra-abdominal pressure measure in patients with liver transplantation by summarizing the data of 143 cases.Methods Intra-abdominal pressure was indirectly measured by urinary bladder pressure.Intra-abdominal pressure over 10 cm H2O (1 cm H2O=0.098 kPa) was regarded as intra-abdominal hypertension (IAH),and 10

Objective Through preliminary clinical use of stereotactically guided wire localization biopsy for nonpalpable breast lesions, we discussed the diagnostic accuracy of the technique and its value in early detection of breast carcinomas. Methods Stereotactically guided wire localization biopsy was performed on 26 lesions. The distance between the needle tip and disease center (D) was calculated and compared to that directly obtained from measurement of the localization between wire tip and center of the lesion. Localization was rated as excellent, good, and bad when D values were ≤2.5 mm, =2.6-4.9 mm, and ≥5.0 mm, respectively. Results Excellent, good, and bad localization results were achieved in 20, 5, and 1 procedures, respectively. These data correlated well with the direct measurements of the localization between wire tip and center of the lesion. Resection of 26 lesions on single operation was achieved and the median volume of the resected specimens was 10 5 cm 3. The breast carcinoma detection rate of 6/26 was achieved. Conclusion Our initial application of the technique showed that stereotactically guided wire localization biopsy for nonpalpable breast lesions was an effective tool for the localization and specification of breast lesions. It could avoid false negativity and help excise the entire lesion without excessive excision of the surrounding normal tissues. The technique was one of those that was worthy of more widely application for the preoperative diagnosis of nonpalpable breast lesions.

Benzene ; Benzene Derivatives ; Bile ; Chromatography, Gas ; Gallbladder ; Gas Chromatography-Mass Spectrometry ; Humans ; Toluene

Objective To evaluate the safety of intracoronary Doppler flow measurement using Doppler FloWire  Methods and Results A total of 906 patients were examined with intracoronary Doppler using a 0 014″ or a 0 018″ Doppler FloWire  For coronary flow reserve measurement, intracoronary injection of adenosine or papaverine was used Of the patients studied, 77 were cardiac transplant recipients, 829 were nontransplant patients, of whom 617 patients underwent diagnostic coronary procedures and 212 had coronary interventions In 27 (2 98%) of 906 patients adverse cardiac events were observed Fifteen (1 66%) of 906 patients developed severe transient bradycardia (asystole or Ⅱ? to Ⅲ? atrioventricular block) after intracoronary administration of adenosine Of which, 14 occurred in RCA and 1 in LAD Nine (0 99%) of 906 patients experienced coronary spasm during the passage of the Doppler wire (5 in RCA, 4 in LAD) Two (0 22%) of 906 patients developed ventricular fibrillation during the procedure Hypotension with bradycardia and ventricular extrasystole each occurred in one (0 11%) of 906 patients The incidence of complication was significantly higher in transplant recipients than in nontransplant patients underwent either diagnostic or interventional procedures (12 99% vs 2 43% vs 0 94%, P

10 mm) treated by CBA or BA were retrospectively analyzed. CBA was used in 74 patients and BA in 43 patients. Results Initial success (residual restenosis ≤30% with no major complications) was achieved in 99% of cases in CBA group and 100% in cases of BA group. Follow-up angiography was performed in all patients at (5.8?1.6) months. The diameter stenosis percent after CBA was lower and the instant gain after CBA was larger than that after BA (11.81%?9.17% versus 26.33%?10.04% and 1.96?0.51 mm versus 1.51? 0.54 mm, respectively; P

Objective To evaluate the safety and efficacy of bone marrow cells(BMCs) transplantation on the improvement of cardiac function and myocardial perfusion in patients with old myocardial infarction. Methods and Results A total of 10 patients with anterior wall myocardial infarction were transplanted with autologous mononuclear BMCs through an infusion catheter which was placed with the tip in the left anterior descending coronary artery after coronary angiography and interventional therapy if necessary. After 3 months of follow-up, a significant increase of left ventricular ejection fraction(LVEF) determined by ultrasonic cardiography was found (54.5%?6.5% vs. 45.3%?9.8% before transplantation, P=0.003); 201-thallium scintigraphy (SPECT) showed that ventricular myocardial perfusion was significantly improved as the semiquantitative score of the immediate and delayed myocardial perfusion defects decreased from 29.5?5.8 and 28.6?6.3 to 23.9?5.7 and 23.0?6.1prospectively (both P