目的比较Mobi-C人工颈椎间盘置换术与ROI-C辅助的颈椎前路减压融合术治疗单节段颈椎病的效果。方法回顾性分析2016年3月至2017年9月在我院治疗的单节段颈椎病患者,对符合标准的35例患者资料进行分组,其中Mobi-C人工颈椎间盘置换术15例,R...目的比较Mobi-C人工颈椎间盘置换术与ROI-C辅助的颈椎前路减压融合术治疗单节段颈椎病的效果。方法回顾性分析2016年3月至2017年9月在我院治疗的单节段颈椎病患者,对符合标准的35例患者资料进行分组,其中Mobi-C人工颈椎间盘置换术15例,ROI-C辅助的颈椎前路减压融合术20例,术后随访12个月以上。记录手术时间、术中出血量和手术相关并发症。采用日本矫形外科协会(Japanese orthopedic association,JOA)评分、颈部残障功能指数(neck disability index,NDI)及疼痛视觉模拟评分法(visual analogue scale,VAS)评价临床疗效。颈椎侧位X线片测量手术节段局部前凸椎间盘Cobb角和颈椎整体前凸C 2~7 Cobb角,过伸过屈位X线片测量颈椎整体活动度(range of motion,ROM),对术前及随访时的数据进行比较。结果35例患者均完成随访。两组患者末次随访的JOA评分、NDI评分及VAS评分均较术前有明显改善,两组术前的JOA评分、NDI评分及VAS评分组间比较差异无统计学意义( P >0.05),两组末次随访的JOA评分、NDI评分及VAS评分组间比较差异无统计学意义( P >0.05)。Mobi-C人工颈椎间盘置换术组末次随访椎间盘Cobb角、C 2~7 Cobb角、颈椎整体活动度与术前相比差异无统计学意义( P >0.05);ROI-C辅助的颈椎前路减压融合术末次随访椎间盘Cobb角及C 2~7 Cobb角与术前相比差异无统计学意义( P >0.05),末次随访颈椎整体活动度与术前相比差异有统计学意义( P <0.05)。两组术前椎间盘Cobb角、C 2~7 Cobb角、颈椎整体活动度的组间比较差异无统计学意义( P >0.05);两组末次随访时椎间盘Cobb角、C 2~7 Cobb角、颈椎整体活动度的组间比较差异有统计学意义( P <0.05)。结论相比于ROI-C辅助的颈椎前路减压融合术,Mobi-C人工颈椎间盘置换术可以取得与前路减压融合内固定术相同的临床效果,而且更好地保持了颈椎活动度,可以作为颈椎病的有效治疗方法.展开更多
目的以丹参为研究对象,比较2020年版《中华人民共和国药典》中3类前处理方法对33种禁用农药残留物回收率的影响,进一步优化快速样品处理法(quick,easy,cheap,effective,rugged and safe,QuEChERS)。方法分别从基质效应和回收率方面比较...目的以丹参为研究对象,比较2020年版《中华人民共和国药典》中3类前处理方法对33种禁用农药残留物回收率的影响,进一步优化快速样品处理法(quick,easy,cheap,effective,rugged and safe,QuEChERS)。方法分别从基质效应和回收率方面比较《中华人民共和国药典》3类前处理方法,并对QuEChERS法进行研究与优化,样品加水后由1%醋酸-乙腈提取,依次加入QuEChERS盐包与QuEChERS净化管盐析净化,提取液经浓缩后分别加入水和内标磷酸三苯酯,结合液相色谱-串联质谱法和气相色谱-串联质谱法以添加水平为定量限浓度水平测定样品的回收率和RSD。结果采用《中华人民共和国药典》前处理方法时,丹参中33种禁用农药(54个单体)在添加水平为定量限浓度水平时,部分农药回收率较低;优化QuEChERS法后,丹参中33种禁用农药(54个单体)在一定浓度下,线性关系良好,r均大于0.990,其回收率为64.43%~127.35%时,RSD均<15%;199批饮片和60批药材中共检出2种农药,甲拌磷检出率为3.86%,克百威检出率为1.93%,但残留量均未超过2020年版《中华人民共和国药典》规定限度。结论优化后的QuEChERS法快速简便,有针对性地对丹参中33种禁用农药残留进行准确检测,对于丹参的生产种植与日常监控具有一定的参考意义。展开更多
Ordovician fracture-cavity carbonate reservoir beds are the major type of producing formations in the Tahe oilfield, Tarim Basin. The seismic responses of these beds clearly changes depending on the different distance...Ordovician fracture-cavity carbonate reservoir beds are the major type of producing formations in the Tahe oilfield, Tarim Basin. The seismic responses of these beds clearly changes depending on the different distance of the fracture-cavity reservoir bed from the top of the section. The seismic reflection becomes weak or is absent when the fracture-cavity reservoir beds are less than 20 ms below the top Ordovician. The effect on top Ordovician reflection became weaker with deeper burial of fracture-cavity reservoir beds but the developed deep fracture-cavity reservoir beds caused stronger reflection in the interior of the Ordovician. This interior reflection can be divided into strong long-axis, irregular and bead string reflections, and was present 80 ms below the top Ordovician. Aimed at understanding reflection characteristics, the spectral decomposition technique, which uses frequency to ＂tune-in＂ bed thickness, was used to predict Ordovician fracture-cavity carbonate formations in the Tahe oilfield. Through finely adjusting the processing parameters of spectral decomposition, it was found that the slice at 30 Hz of the tuned data cube can best represent reservoir bed development. Two large N-S-trending strong reflection belts in the mid-western part of the study area along wells TK440- TK427-TK417B and in the eastern part along wells TK404-TK409 were observed distinctly on the 30 Hz slice and 4-D time-frequency data cube carving. A small N-S trending reflection belt in the southern part along wells T403-TK446B was also clearly identified. The predicted reservoir bed development area coincides with the fracture-cavities connection area confirmed by drilling pressure testing results. Deep karst cavities occur basically in three reservoir bed-development belts identified by the Ordovician interior strong reflection. Spectral decomposition proved to be a useful technique in identifying fracture-cavity reservoir beds.展开更多
Based on the TK7 high-temperature tunnel kiln computer control system, this article describes the control line system, the automatic loop control which has been realized in firing zone temperature, inner and bottom pr...Based on the TK7 high-temperature tunnel kiln computer control system, this article describes the control line system, the automatic loop control which has been realized in firing zone temperature, inner and bottom pressure and flow, and logic control of kiln doors and pusher, etc. In addition, this system integrates the product information management system of magnesite brick and efficiently ensures the important process parameters. During three months performance of the control system, all parameters and energy consumption have turned out a good result.展开更多
文摘目的比较Mobi-C人工颈椎间盘置换术与ROI-C辅助的颈椎前路减压融合术治疗单节段颈椎病的效果。方法回顾性分析2016年3月至2017年9月在我院治疗的单节段颈椎病患者,对符合标准的35例患者资料进行分组,其中Mobi-C人工颈椎间盘置换术15例,ROI-C辅助的颈椎前路减压融合术20例,术后随访12个月以上。记录手术时间、术中出血量和手术相关并发症。采用日本矫形外科协会(Japanese orthopedic association,JOA)评分、颈部残障功能指数(neck disability index,NDI)及疼痛视觉模拟评分法(visual analogue scale,VAS)评价临床疗效。颈椎侧位X线片测量手术节段局部前凸椎间盘Cobb角和颈椎整体前凸C 2~7 Cobb角,过伸过屈位X线片测量颈椎整体活动度(range of motion,ROM),对术前及随访时的数据进行比较。结果35例患者均完成随访。两组患者末次随访的JOA评分、NDI评分及VAS评分均较术前有明显改善,两组术前的JOA评分、NDI评分及VAS评分组间比较差异无统计学意义( P >0.05),两组末次随访的JOA评分、NDI评分及VAS评分组间比较差异无统计学意义( P >0.05)。Mobi-C人工颈椎间盘置换术组末次随访椎间盘Cobb角、C 2~7 Cobb角、颈椎整体活动度与术前相比差异无统计学意义( P >0.05);ROI-C辅助的颈椎前路减压融合术末次随访椎间盘Cobb角及C 2~7 Cobb角与术前相比差异无统计学意义( P >0.05),末次随访颈椎整体活动度与术前相比差异有统计学意义( P <0.05)。两组术前椎间盘Cobb角、C 2~7 Cobb角、颈椎整体活动度的组间比较差异无统计学意义( P >0.05);两组末次随访时椎间盘Cobb角、C 2~7 Cobb角、颈椎整体活动度的组间比较差异有统计学意义( P <0.05)。结论相比于ROI-C辅助的颈椎前路减压融合术,Mobi-C人工颈椎间盘置换术可以取得与前路减压融合内固定术相同的临床效果,而且更好地保持了颈椎活动度,可以作为颈椎病的有效治疗方法.
文摘目的以丹参为研究对象,比较2020年版《中华人民共和国药典》中3类前处理方法对33种禁用农药残留物回收率的影响,进一步优化快速样品处理法(quick,easy,cheap,effective,rugged and safe,QuEChERS)。方法分别从基质效应和回收率方面比较《中华人民共和国药典》3类前处理方法,并对QuEChERS法进行研究与优化,样品加水后由1%醋酸-乙腈提取,依次加入QuEChERS盐包与QuEChERS净化管盐析净化,提取液经浓缩后分别加入水和内标磷酸三苯酯,结合液相色谱-串联质谱法和气相色谱-串联质谱法以添加水平为定量限浓度水平测定样品的回收率和RSD。结果采用《中华人民共和国药典》前处理方法时,丹参中33种禁用农药(54个单体)在添加水平为定量限浓度水平时,部分农药回收率较低;优化QuEChERS法后,丹参中33种禁用农药(54个单体)在一定浓度下,线性关系良好,r均大于0.990,其回收率为64.43%~127.35%时,RSD均<15%;199批饮片和60批药材中共检出2种农药,甲拌磷检出率为3.86%,克百威检出率为1.93%,但残留量均未超过2020年版《中华人民共和国药典》规定限度。结论优化后的QuEChERS法快速简便,有针对性地对丹参中33种禁用农药残留进行准确检测,对于丹参的生产种植与日常监控具有一定的参考意义。
文摘Ordovician fracture-cavity carbonate reservoir beds are the major type of producing formations in the Tahe oilfield, Tarim Basin. The seismic responses of these beds clearly changes depending on the different distance of the fracture-cavity reservoir bed from the top of the section. The seismic reflection becomes weak or is absent when the fracture-cavity reservoir beds are less than 20 ms below the top Ordovician. The effect on top Ordovician reflection became weaker with deeper burial of fracture-cavity reservoir beds but the developed deep fracture-cavity reservoir beds caused stronger reflection in the interior of the Ordovician. This interior reflection can be divided into strong long-axis, irregular and bead string reflections, and was present 80 ms below the top Ordovician. Aimed at understanding reflection characteristics, the spectral decomposition technique, which uses frequency to ＂tune-in＂ bed thickness, was used to predict Ordovician fracture-cavity carbonate formations in the Tahe oilfield. Through finely adjusting the processing parameters of spectral decomposition, it was found that the slice at 30 Hz of the tuned data cube can best represent reservoir bed development. Two large N-S-trending strong reflection belts in the mid-western part of the study area along wells TK440- TK427-TK417B and in the eastern part along wells TK404-TK409 were observed distinctly on the 30 Hz slice and 4-D time-frequency data cube carving. A small N-S trending reflection belt in the southern part along wells T403-TK446B was also clearly identified. The predicted reservoir bed development area coincides with the fracture-cavities connection area confirmed by drilling pressure testing results. Deep karst cavities occur basically in three reservoir bed-development belts identified by the Ordovician interior strong reflection. Spectral decomposition proved to be a useful technique in identifying fracture-cavity reservoir beds.
文摘Based on the TK7 high-temperature tunnel kiln computer control system, this article describes the control line system, the automatic loop control which has been realized in firing zone temperature, inner and bottom pressure and flow, and logic control of kiln doors and pusher, etc. In addition, this system integrates the product information management system of magnesite brick and efficiently ensures the important process parameters. During three months performance of the control system, all parameters and energy consumption have turned out a good result.
