目的:探讨苯扎氯铵溶液对预防拔牙术后创口感染的临床效果。方法:选取2020年6月-2021年6月在我院行下颌阻生齿拔除术的180例患者,依照患者就诊顺序及个人意愿分为苯扎氯铵溶液组(n=60,术后含漱苯扎氯铵溶液)、生理盐水组(n=60,术后含漱...目的:探讨苯扎氯铵溶液对预防拔牙术后创口感染的临床效果。方法:选取2020年6月-2021年6月在我院行下颌阻生齿拔除术的180例患者,依照患者就诊顺序及个人意愿分为苯扎氯铵溶液组(n=60,术后含漱苯扎氯铵溶液)、生理盐水组(n=60,术后含漱生理盐水)和空白对照组(n=60,不用药物含漱),对比分析3组患者术后创口情况。结果:苯扎氯铵溶液组、生理盐水组和空白对照组发生创口感染者分别为0、5、12例,苯扎氯铵溶液组术后创口感染率明显低于其他2组(P<0.05)。苯扎氯铵溶液组术后7 d Negm分级2~4级的患者占比3.33%,生理盐水组占比26.67%,空白对照组占比35.00%,苯扎氯铵溶液组的Negm分级明显低于其他2组(P<0.05)。结论:使用苯扎氯铵溶液含漱可有效预防拔牙术后创口感染。展开更多
路面平整度是进行道路养护决策的重要依据,传统检测手段受限于其设备结构,仅能获取路面上单一轨迹的平整度数值,难以表征路面横向不同断面的平整度分布情况。针对这一问题,利用高精度激光雷达(Light Detection and Ranging,LiDAR)采集...路面平整度是进行道路养护决策的重要依据,传统检测手段受限于其设备结构,仅能获取路面上单一轨迹的平整度数值,难以表征路面横向不同断面的平整度分布情况。针对这一问题,利用高精度激光雷达(Light Detection and Ranging,LiDAR)采集路面的三维点云数据,提取了路段横向典型位置测线的高程信息,结合方差分析与Kruskal-Wallis非参数检验等方法,分析不同横向测线平整度数值是否具有显著性差异,并基于上海市超过25km的实测道路数据总结了平整度横向分布的差异特性。结果显示:就单一路段而言,不同测线的国际平整度指数(International Roughness Index,IRI)具有明显差异,从分布上来看,仅在相邻纵断面间距超过2.5m时,平整度分布才具有显著差异,而其他情况下各测线的平整度分布无显著性差异;但从多路段平整度分布来看,路面平整度横向分布是否具有显著性差异与路段本身属性相关。路段平整度分布离散性越强的道路,其各测线平整度结果具有显著差异的概率就越大。由此可知,基于LiDAR的多测线路面平整度可以有效反映路段的平整度分布情况,避免单一测线造成的测量误差。展开更多
The production of transgenic sweetpotato （cv.Xushu 18） plants exhibiting enhanced salt tolerance using salt overly sensitive （SOS） genes was achieved through Agrobacterium tumefaciens-mediated transformation.A.tum...The production of transgenic sweetpotato （cv.Xushu 18） plants exhibiting enhanced salt tolerance using salt overly sensitive （SOS） genes was achieved through Agrobacterium tumefaciens-mediated transformation.A.tumefaciens strain EHA105 harbors a binary vector pCAMBIA3301 with SOS genes （SOS1,SOS2 and SOS3） and bar gene.Selection culture was conducted using 0.3 mg L^-1 phosphinothricin （PPT）.A total of 40 plants were produced from the inoculated 170 cell aggregates via somatic embryogenesis.PCR analysis showed that 37 of the 40 regenerated plants were transgenic plants.The in vitro assay demonstrated that superoxide dismutase （SOD） and proline were significantly more accumulated and malonaldehyde （MDA） was significantly less accumulated in 21 transgenic plants than in control plants when they were exposed to 86 mmol L^-1 NaCl.Salt tolerance of these 21 plants was further evaluated with Hoagland solution containing 0,51,86,and 120 mmol L^-1 NaCl in the greenhouse.The results indicated that 6 of them had significantly better growth and rooting ability than the remaining 15 transgenic plants and control plants.Expression of SOS genes in the 6 salt-tolerant transgenic plants was demonstrated by RT-PCR analysis.This study provides an alternative approach for improving salt tolerance of sweetpotato.展开更多
文摘目的:探讨苯扎氯铵溶液对预防拔牙术后创口感染的临床效果。方法:选取2020年6月-2021年6月在我院行下颌阻生齿拔除术的180例患者,依照患者就诊顺序及个人意愿分为苯扎氯铵溶液组(n=60,术后含漱苯扎氯铵溶液)、生理盐水组(n=60,术后含漱生理盐水)和空白对照组(n=60,不用药物含漱),对比分析3组患者术后创口情况。结果:苯扎氯铵溶液组、生理盐水组和空白对照组发生创口感染者分别为0、5、12例,苯扎氯铵溶液组术后创口感染率明显低于其他2组(P<0.05)。苯扎氯铵溶液组术后7 d Negm分级2~4级的患者占比3.33%,生理盐水组占比26.67%,空白对照组占比35.00%,苯扎氯铵溶液组的Negm分级明显低于其他2组(P<0.05)。结论:使用苯扎氯铵溶液含漱可有效预防拔牙术后创口感染。
基金supported by China Agriculture Research System(Sweetpotato)the National High-Tech R&D Program of China(2009AA10Z102)the National Transgenic Plants Project of China(2009ZX08009-064B)
文摘The production of transgenic sweetpotato （cv.Xushu 18） plants exhibiting enhanced salt tolerance using salt overly sensitive （SOS） genes was achieved through Agrobacterium tumefaciens-mediated transformation.A.tumefaciens strain EHA105 harbors a binary vector pCAMBIA3301 with SOS genes （SOS1,SOS2 and SOS3） and bar gene.Selection culture was conducted using 0.3 mg L^-1 phosphinothricin （PPT）.A total of 40 plants were produced from the inoculated 170 cell aggregates via somatic embryogenesis.PCR analysis showed that 37 of the 40 regenerated plants were transgenic plants.The in vitro assay demonstrated that superoxide dismutase （SOD） and proline were significantly more accumulated and malonaldehyde （MDA） was significantly less accumulated in 21 transgenic plants than in control plants when they were exposed to 86 mmol L^-1 NaCl.Salt tolerance of these 21 plants was further evaluated with Hoagland solution containing 0,51,86,and 120 mmol L^-1 NaCl in the greenhouse.The results indicated that 6 of them had significantly better growth and rooting ability than the remaining 15 transgenic plants and control plants.Expression of SOS genes in the 6 salt-tolerant transgenic plants was demonstrated by RT-PCR analysis.This study provides an alternative approach for improving salt tolerance of sweetpotato.
