A hierarchical storage management (HSM) scheme for cost-effective on-line archival using lossy compression

A hierarchical storage management (HSM) scheme for cost-effective on-line archival of image data using lossy compression is described. This HSM scheme also provides an off-site tape backup mechanism and disaster recovery. The full-resolution image data are viewed originally for primary diagnosis, then losslessly compressed and sent off site to a tape backup archive. In addition, the original data are wavelet lossy compressed (at approximately 25:1 for computed radiography, 10:1 for computed tomography, and 5:1 for magnetic resonance) and stored on a large RAID device for maximum cost-effective, on-line storage and immediate retrieval of images for review and comparison. This HSM scheme provides a solution to 4 problems in image archiving, namely cost-effective on-line storage, disaster recovery of data, off-site tape backup for the legal record, and maximum intermediate storage and retrieval through the use of on-site lossy compression.     

四种心肌克隆钾通道的表达和电生理记录

为建立一种研究离子通道的有效模型 ,笔者应用分子生物学技术 ,将包含有Kv1.4、Kv1.5、Herg和KvLQT1等几种心肌克隆钾离子 (K+ )通道cDNA的质粒经扩增 ,提取 ,以及纯化后转录为mRNA。经微注射技术分别将它们注射入克隆离子通道表达系统———非洲爪蟾卵母细胞内 ,然后应用膜片钳技术记录上述克隆离子通道电流。结果 :获得了四种克隆通道的电流 时间关系曲线 (I/t)和电流 电压关系曲线 (I/V)。结论 :本实验结果证明所采用的技术稳定可靠 ,并为今后开展克隆离子通道结构和功能的关系以及抗心律失常药物与离子通道相互作用的研究提供了坚实的基础。     

Infected bilomas and hepatic artery thrombosis in infant recipients of liver transplants. Interventional radiology and medical therapy as an alternative to retransplantation

Fifteen children less than 12 kg in weight underwent transplantation of the liver for biliary atresia; eight survived. Five of the eight survivors had thrombosis of the hepatic artery without portal vein thrombosis. Three of the five patients with hepatic artery thrombosis developed infected bilomas, which were drained percutaneously under ultrasonographic (US) or computed tomographic (CT) guidance. Concurrent therapy with antibiotics and hyperoxygenation resulted in resolution of these intrahepatic collections. Although it had been thought that thrombosis of the hepatic artery most often results in necrosis of the graft and requires retransplantation, the five patients in this study survived without retransplantation. Diagnosis of hepatic artery thrombosis was achieved with the use of Doppler US in four cases, CT in four cases, and angiography in two cases. Duplex Doppler US is the preferred imaging modality.     

5-取代苯基,1-氢及1-正丙基吡唑烷酮-3化合物抗惊作用QASR的研究

研究了5-取代苯基吡唑烷酮-3衍生物中苯基取代基的变化对抗惊活性的影响。按照Topliss改进法设计并合成了。1-氢及1-正丙基取代的化合物各六个,找到了活性较强的化合物,为5-(对氟苯基)-1-丙基吡唑烷酮-3,其ED₅₀为14.7mg/kg。经QSAR研究,发现疏水参数∑π对活性影响较大,苯上取代基的立体参数B₄和电性参数Ⅰ×10²可以改进相关系数r。方程说明5-位苯上引入体积小的吸电子基团可使抗惊活性提高。