The aim of the research work is to increase the yield of cotton fiber by improving the processing technology of germinated seeds, to improve the quality indicators of seeds and lint. In order to achieve this goal, a m...The aim of the research work is to increase the yield of cotton fiber by improving the processing technology of germinated seeds, to improve the quality indicators of seeds and lint. In order to achieve this goal, a mesh surface device was created to sort the seeds into fractions. Sorting technology was developed on this device and operating modes were determined. In addition, the law of surface distribution of the fractions separated from the cotton stream moving along the surface of the net was determined, and based on the results of practical and theoretical research, a mode of sorting of cotton seeds was developed. As a result, differential equations of the law of oscillation of seeds on parallel bases, taking into account the angle of inclination for the movement of cotton seeds on the sorting surface, were constructed and programmed on a computer to construct the trajectory of seeds. On the basis of the laws of motion, the optimal value of the angle of inclination on the horizontal, which gives the state of sorting of seeds, as well as the values of the amplitude and frequency of vibrations, was determined.展开更多
目的:探讨不同浓度罗哌卡因在膈神经阻滞中的临床效果分析。方法:选择2022年1月—2023年5月于宜昌市中心人民医院行腹腔镜下行全子宫切除术的180例患者,采用随机数字表法将纳入患者分为六组:A组(0.125%罗哌卡因,n=30)、B组(0.25%罗哌卡...目的:探讨不同浓度罗哌卡因在膈神经阻滞中的临床效果分析。方法:选择2022年1月—2023年5月于宜昌市中心人民医院行腹腔镜下行全子宫切除术的180例患者,采用随机数字表法将纳入患者分为六组:A组(0.125%罗哌卡因,n=30)、B组(0.25%罗哌卡因,n=30)、C组(0.375%罗哌卡因,n=30)、D组(0.5%罗哌卡因,n=30)、E组(0.75%罗哌卡因,n=30)和对照组(不行膈神经阻滞,n=30),其中A~E组患者均于术前行超声引导下右侧膈神经阻滞。评估各组患者术后肩痛视觉模拟量表(VAS)评分、膈肌运动幅度(DM)、术后恢复及不良反应发生情况。结果:在术后肩痛方面,C组[(2.47±1.14)分vs (4.03±1.77)分]、D组[(2.53±1.22)分vs (4.03±1.77)分]、E组[(2.50±1.22)分vs (4.03±1.77)分]患者VAS评分明显低于对照组(均P<0.05);在DM方面,D组、E组患者膈神经阻滞10 min的DM明显低于对照组(均P<0.05);在麻醉恢复时间方面,D组[(22.50±2.16) min vs (20.73±1.76) min]和E组[(22.80±2.63) min vs (20.73±1.76) min]患者的PACU停留时间较对照组明显延长(均P<0.05);在患者术后恢复质量方面,C组、D组、E组患者术后24 h的15项恢复质量(QoR-15)评分明显高于对照组(均P<0.05);E组患者总不良反应发生率明显高于对照组(43.33%vs 16.67%)。结论:采用0.375%罗哌卡因行右侧膈神经阻滞是安全有效的,能有效减轻腹腔镜全子宫切除患者术后肩痛并提高术后恢复质量,且不会影响膈肌功能恢复及PACU停留时间,值得临床推广应用。展开更多
文摘The aim of the research work is to increase the yield of cotton fiber by improving the processing technology of germinated seeds, to improve the quality indicators of seeds and lint. In order to achieve this goal, a mesh surface device was created to sort the seeds into fractions. Sorting technology was developed on this device and operating modes were determined. In addition, the law of surface distribution of the fractions separated from the cotton stream moving along the surface of the net was determined, and based on the results of practical and theoretical research, a mode of sorting of cotton seeds was developed. As a result, differential equations of the law of oscillation of seeds on parallel bases, taking into account the angle of inclination for the movement of cotton seeds on the sorting surface, were constructed and programmed on a computer to construct the trajectory of seeds. On the basis of the laws of motion, the optimal value of the angle of inclination on the horizontal, which gives the state of sorting of seeds, as well as the values of the amplitude and frequency of vibrations, was determined.
文摘目的:探讨不同浓度罗哌卡因在膈神经阻滞中的临床效果分析。方法:选择2022年1月—2023年5月于宜昌市中心人民医院行腹腔镜下行全子宫切除术的180例患者,采用随机数字表法将纳入患者分为六组:A组(0.125%罗哌卡因,n=30)、B组(0.25%罗哌卡因,n=30)、C组(0.375%罗哌卡因,n=30)、D组(0.5%罗哌卡因,n=30)、E组(0.75%罗哌卡因,n=30)和对照组(不行膈神经阻滞,n=30),其中A~E组患者均于术前行超声引导下右侧膈神经阻滞。评估各组患者术后肩痛视觉模拟量表(VAS)评分、膈肌运动幅度(DM)、术后恢复及不良反应发生情况。结果:在术后肩痛方面,C组[(2.47±1.14)分vs (4.03±1.77)分]、D组[(2.53±1.22)分vs (4.03±1.77)分]、E组[(2.50±1.22)分vs (4.03±1.77)分]患者VAS评分明显低于对照组(均P<0.05);在DM方面,D组、E组患者膈神经阻滞10 min的DM明显低于对照组(均P<0.05);在麻醉恢复时间方面,D组[(22.50±2.16) min vs (20.73±1.76) min]和E组[(22.80±2.63) min vs (20.73±1.76) min]患者的PACU停留时间较对照组明显延长(均P<0.05);在患者术后恢复质量方面,C组、D组、E组患者术后24 h的15项恢复质量(QoR-15)评分明显高于对照组(均P<0.05);E组患者总不良反应发生率明显高于对照组(43.33%vs 16.67%)。结论:采用0.375%罗哌卡因行右侧膈神经阻滞是安全有效的,能有效减轻腹腔镜全子宫切除患者术后肩痛并提高术后恢复质量,且不会影响膈肌功能恢复及PACU停留时间,值得临床推广应用。
