在森林防火戒严期内,用自行设计的燃烧试验装置对云南松Pinus yunnanensis Franch.,华山松Pinusarmandii Franch.,地盘松Pinus yunnanensis Franch. var. pygmaea(Hseh)Hseh,杉木Cunninghamia lanceolata(Lamb.)Hook.,藏柏Cupressus...在森林防火戒严期内,用自行设计的燃烧试验装置对云南松Pinus yunnanensis Franch.,华山松Pinusarmandii Franch.,地盘松Pinus yunnanensis Franch. var. pygmaea(Hseh)Hseh,杉木Cunninghamia lanceolata(Lamb.)Hook.,藏柏Cupressus torulosaD.Don和柳杉Cryptomeria fortunei Hooibrenk ex Otto et Dietr.6种针叶树的活枝叶进行9次燃烧试验和无样品的对照试验。在测定和分析样品含水率、引燃时间、有焰燃烧时间、试验过程中烟气温度和质量损失变化等基础上,提出了燃烧性参数,即单位质量可燃物在有焰燃烧阶段相对于对照试验的烟气净积温与引燃时间之比。根据该参数计算6种针叶树9次燃烧试验的燃烧性参数,并根据9次试验燃烧性参数的平均值对6种针叶树的燃烧性进行了综合排序,即柳杉>藏柏>杉木>地盘松>华山松>云南松。研究结果还表明,6种针叶树的燃烧性在防火戒严期呈动态变化,并在总体上呈下降趋势。展开更多
AIM To analyze the outcomes of living-donor liver transplantation(LDLT) using left-lobe(LL) or right-lobe(RL) small-for-size(SFS) grafts.METHODS Prospectively collected data of adult patients who underwent LDLT at our...AIM To analyze the outcomes of living-donor liver transplantation(LDLT) using left-lobe(LL) or right-lobe(RL) small-for-size(SFS) grafts.METHODS Prospectively collected data of adult patients who underwent LDLT at our hospital in the period from January 2003 to December 2013 were reviewed. The patients were divided into the RL-LDLT group and the LL-LDLT group. The two groups were compared in terms of short-and long-term outcomes, including incidence of postoperative complication, graft function, graft survival, and patient survival. A SFS graft was defined as a graft with a ratio of graft weight(GW) to recipient standard liver volume(RSLV)(GW/RSLV) of < 50%. The Urata formula was used to estimate RSLV.RESULTS Totally 218 patients were included for analysis, with 199 patients in the RL-LDLT group and 19 patients in the LL-LDLT group. The two groups were similar in terms of age(median, 53 years in the RL-LDLT group and 52 years in the LL-LDLT group, P = 0.997) but had significantly different ratios of men to women(165:34 in the RL-LDLT group and 8:11 in the LL-LDLT group, P < 0.0001). The two groups were also significantly different in GW(P < 0.0001), GW/RSLV(P < 0.0001), and graft cold ischemic time(P = 0.007). When it comes to postoperative complication, the groups were comparable(P = 0.105). Five patients died in hospital,4(2%) in the RL-LDLT group and 1(5.3%) in the LLLDLT group(P = 0.918). There were 38 graft losses, 33(16.6%) in the RL-LDLT group and 5(26.3%) in the LL-LDLT group(P = 0.452). The 5-year graft survival rate was significantly better in the RL-LDLT group(95.2% vs 89.5%, P = 0.049). The two groups had similar 5-year patient survival rates(RL-LDLT: 86.8%, LL-LDLT: 89.5%, P = 0.476).CONCLUSION The use of SFS graft in LDLT requires careful tailormade surgical planning and meticulous operation. LLLDLT can be a good alternative to RL-LDLT with similar recipient outcomes but a lower donor risk. Further research into different patient conditions is needed in order to validate the use of LL graft.展开更多
文摘在森林防火戒严期内,用自行设计的燃烧试验装置对云南松Pinus yunnanensis Franch.,华山松Pinusarmandii Franch.,地盘松Pinus yunnanensis Franch. var. pygmaea(Hseh)Hseh,杉木Cunninghamia lanceolata(Lamb.)Hook.,藏柏Cupressus torulosaD.Don和柳杉Cryptomeria fortunei Hooibrenk ex Otto et Dietr.6种针叶树的活枝叶进行9次燃烧试验和无样品的对照试验。在测定和分析样品含水率、引燃时间、有焰燃烧时间、试验过程中烟气温度和质量损失变化等基础上,提出了燃烧性参数,即单位质量可燃物在有焰燃烧阶段相对于对照试验的烟气净积温与引燃时间之比。根据该参数计算6种针叶树9次燃烧试验的燃烧性参数,并根据9次试验燃烧性参数的平均值对6种针叶树的燃烧性进行了综合排序,即柳杉>藏柏>杉木>地盘松>华山松>云南松。研究结果还表明,6种针叶树的燃烧性在防火戒严期呈动态变化,并在总体上呈下降趋势。
文摘AIM To analyze the outcomes of living-donor liver transplantation(LDLT) using left-lobe(LL) or right-lobe(RL) small-for-size(SFS) grafts.METHODS Prospectively collected data of adult patients who underwent LDLT at our hospital in the period from January 2003 to December 2013 were reviewed. The patients were divided into the RL-LDLT group and the LL-LDLT group. The two groups were compared in terms of short-and long-term outcomes, including incidence of postoperative complication, graft function, graft survival, and patient survival. A SFS graft was defined as a graft with a ratio of graft weight(GW) to recipient standard liver volume(RSLV)(GW/RSLV) of < 50%. The Urata formula was used to estimate RSLV.RESULTS Totally 218 patients were included for analysis, with 199 patients in the RL-LDLT group and 19 patients in the LL-LDLT group. The two groups were similar in terms of age(median, 53 years in the RL-LDLT group and 52 years in the LL-LDLT group, P = 0.997) but had significantly different ratios of men to women(165:34 in the RL-LDLT group and 8:11 in the LL-LDLT group, P < 0.0001). The two groups were also significantly different in GW(P < 0.0001), GW/RSLV(P < 0.0001), and graft cold ischemic time(P = 0.007). When it comes to postoperative complication, the groups were comparable(P = 0.105). Five patients died in hospital,4(2%) in the RL-LDLT group and 1(5.3%) in the LLLDLT group(P = 0.918). There were 38 graft losses, 33(16.6%) in the RL-LDLT group and 5(26.3%) in the LL-LDLT group(P = 0.452). The 5-year graft survival rate was significantly better in the RL-LDLT group(95.2% vs 89.5%, P = 0.049). The two groups had similar 5-year patient survival rates(RL-LDLT: 86.8%, LL-LDLT: 89.5%, P = 0.476).CONCLUSION The use of SFS graft in LDLT requires careful tailormade surgical planning and meticulous operation. LLLDLT can be a good alternative to RL-LDLT with similar recipient outcomes but a lower donor risk. Further research into different patient conditions is needed in order to validate the use of LL graft.
