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Liver preservation prior to transplantation: Past, present, and future 被引量:5
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作者 Marcio F Chedid Marcelo A Pinto +2 位作者 Jose Felipe G Juchem Tomaz J M Grezzana-Filho Cleber R P Kruel 《World Journal of Gastrointestinal Surgery》 SCIE CAS 2019年第3期122-125,共4页
Since Dr. Thomas Starzl performed the first series of successful liver transplants(LTs), important advances have been made in immunosuppression, operative techniques, and postoperative care. In 1988, Belzer's grou... Since Dr. Thomas Starzl performed the first series of successful liver transplants(LTs), important advances have been made in immunosuppression, operative techniques, and postoperative care. In 1988, Belzer's group reported the first successful LT using the University of Wisconsin preservation solution(UW).Since then, UW has replaced EuroCollins solution and allowed prolonged and safer preservation of liver, kidney, and pancreas allografts, thus contributing to the improvement of transplant outcomes. Although UW is still considered the standard of care in the United States and in several countries worldwide, a recent meta-analysis revealed similar LT outcomes among UW, Celsior solution, and the Institut Georges Lopez-1 preservation solution, which were slightly superior to those obtained with histidine-tryptophan-ketoglutarate preservation solution.Dynamic preservation has been recently developed, and liver allografts are preserved mainly through the following methods: hypothermic machine perfusion, normothermic machine perfusion, and subnormothermic machine perfusion. Their use has the potential advantage of improving clinical results in LT involving extended criteria donor allografts. Although associated with increased costs, techniques employing machine perfusion of liver allografts have been considered clinically feasible. This editorial focuses on recent advances and future perspectives in liver allograft preservation. 展开更多
关键词 Liver TRANSPLANTATION University of WISCONSIN PRESERVATION SOLUTION Institute Georges Lopez PRESERVATION SOLUTION Celsior PRESERVATION SOLUTION Histidine-tryptophanketoglutarate PRESERVATION SOLUTION dymamic PRESERVATION Normothermic ISCHEMIA Normothermic PRESERVATION Hypotermic machine PRESERVATION Static cold prreservation
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泵送混凝土流变性及泵送过程的数值模拟研究进展 被引量:2
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作者 王辉 赵嘉兴 +1 位作者 何世钦 刘旭辉 《粉煤灰综合利用》 CAS 2023年第1期70-75,共6页
在高层混凝土结构建筑施工过程中,混凝土的流变性能对泵送效果有很大影响。而单纯的流变性指标不足以准确描述其泵送性能,盘管试验又存在成本过高的问题,鉴于此,为保障泵送安全、保证施工质量,多采用数值模拟方法对混凝土流变性及泵送... 在高层混凝土结构建筑施工过程中,混凝土的流变性能对泵送效果有很大影响。而单纯的流变性指标不足以准确描述其泵送性能,盘管试验又存在成本过高的问题,鉴于此,为保障泵送安全、保证施工质量,多采用数值模拟方法对混凝土流变性及泵送过程进行研究。现阶段常用模拟方法分为三类:计算流体动力学法(CFD)、离散颗粒流法(DEM)以及二者耦合法。各模拟方法都不可避免地存在误差,目前的重点便是结合已有实例的试验与模拟结果,分析误差产生的原因,改进计算方法,降低模拟误差。针对上述数值模拟方法,选取了典型的混凝土流变性模拟实例,归纳了各类方法的优势与不足,分析了亟待解决的问题和各方法的适用性,在此基础上对今后泵送混凝土流变性及泵送过程数值模拟研究方向进行了展望。 展开更多
关键词 泵送混凝土 流变性 数值模拟 计算流体动力学(CFD) 离散颗粒流法(DEM)
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