[en] Pressure drop and heat transfer in porous media with inherent heat source were investigated in this paper. A new correlation for the flow pressure drop in the pebble bed was concluded and the experimental results for pressure drop obtained in this paper agree well with the correlation equation. The variation between the actual pressure drop values from the different correlations is quite considerable. The narrow range of system geometry as well as operating parameters of the existing correlations may be one of the main reasons why the predicted results are so scattered. The empirical correlation of heat transfer for porous media packed with heated spherical particles is derived from the experimental data and shows a well prediction. There are considerable discrepancies between the predicted Nusselt number calculated by different correlations that demonstrate more experimental studies needed for porous media with inherent heat source

[en] Objective: To evaluated the clinical value of interventional treatment in uterine carcinoma. Methods: 48 cases of uterine carcinoma (including 35 carcinoma of cervix and 13 carcinoma of endometrium) were treated with interventional management through uterine artery. Operation was performed after interventional treatment in 21 cases. Results: 21 cases of combined intervention and operation therapies, the 1-year and 3-year survival rates were 100% and 90.5% (19/21) respectively. 27 cases of intervention therapy alone, the 1-year and 3-year survival rates were 100% and 88.9% (24/77), respectively. No complication occurred. Conclusions: The technique is effective in treating advanced uterine carcinoma. It improves condition for further operation and promotes the survival rate

[en] Objective: To evaluate the diagnostic value of Achilles tendon rupture by using X-ray plain films and MR images. Methods: The plain films and MRI findings in 21 patients with operation proved acute Achilles tendon rupture were analyzed, and every manifestation on MR and operation were compared. Results: The Achilles tendon rupture was diagnosed on MRI in all 21 cases. Complete rupture of Achilles tendon was showed in 7 and partial rupture in 14. MRI appearance of the rupture represented as thickening of Achilles tendon, hyperintensity in the tendon, and completely or partly discontinuance of the fibrous bundle. X-ray showed Achilles tendon rupture in 5, suspicious rupture in 12, and normal in 4. Operation showed Achilles tendon complete rupture in 9 and partial rupture in 12. Conclusion: MRI can accurately show the degree and location of acute Achilles tendon rupture, which is very helpful for treatment. X-ray is the adminicular method in detecting Achilles tendon rupture and the diagnosis should be depended on MRI to confirm the the acute Achilles tendon rupture. (authors)

[en] Objective: To analyze MRI findings and its clinical significance in complications of polyamide hydrogel injection for augmentation mammoplasty. Methods: The complication findings of MR imaging in 20 cases with polyamide hydrogel injection for augmentation mammoplasty were retrospectively reviewed and analyzed. Results: In 20 patients, 26 breasts suffered from complications, including infection (n=5) with pieces of long T₁ and long T₂ signals, aseptic inflammation (n=2) with pieces of slight long T₁ and moderate T₂ signals, hard nodule (n=10) with long T₁ and long T₂ signals, and rupture (n=5) with pieces and nodes of long T₁ and long T₂ signals on MR images. Conclusion: MRI has the great diagnostic value in the detection of complications after polyamide hydrogel injection for augmentation mammoplasty, and it should be taken as the first diagnostic choice. (authors)