目的分析膝关节压力均衡术治疗膝关节退行性骨关节病(KOA)的围术期护理干预对自我管理、症状控制的影响,总结护理改进经验。方法选取相关研究对象84例,采用随机数字表分为对照组和观察组各42例,分别采用常规护理方式及在此基础上的综合...目的分析膝关节压力均衡术治疗膝关节退行性骨关节病(KOA)的围术期护理干预对自我管理、症状控制的影响,总结护理改进经验。方法选取相关研究对象84例,采用随机数字表分为对照组和观察组各42例,分别采用常规护理方式及在此基础上的综合护理干预,特别重视疼痛、肿胀的防控,注重提高康复训练、生活管理水平。结果观察组出院前、第3、6个月HSS评分高于对照组,第6个月观察组HSS优良率100.00%(42/42),高于对照组85.71%(36/42);观察组肿胀消退时间、术后3 d VAS均值水平、患侧膝关节训练开始时间低于对照组,术后1周膝关节训练次数,出院后膝关节训练维持时间高于对照组,差异有统计学意义(P<0.05)。结论加强综合护理干预后,进一步提高了患者的疾病管理水平,症状控制效果,有助于膝关节功能恢复。展开更多
To improve the energy utilization efficiency of internal combustion （IC） engine, exergy analysis was conducted on a passenger car gasoline engine. According to the thermodynamic theory of IC engine, in-cylinder exer...To improve the energy utilization efficiency of internal combustion （IC） engine, exergy analysis was conducted on a passenger car gasoline engine. According to the thermodynamic theory of IC engine, in-cylinder exergy balance model was built. The working processes of gasoline engine were simulated by using the GT-power. In this way, the required parameters were calculated and then gasoline engine exergy balance was obtained by programming on computer. On this basis, the influences of various parameters on exergy balance were analyzed. Results show that, the proportions of various forms of exergy in gasoline engine from high to low are irreversible loss, effective work, exhaust gas exergy and heat transfer exergy. Effective exergy proportion fluctuates with cylinder volumetric efficiency at full load, while it always increases with break mean effective pressure （BMEP） at part load. Exhaust gas exergy proportion is more sensitive to speed, and it increases with speed increasing except at the highest speed. The lower proportion of heat transfer exergy appears at high speed and high load. Irreversible loss is mainly influenced by load. At part load, higher BMEP results in lower proportion of irreversible loss; at full load, the proportion of irreversible loss changes little except at the highest speed.展开更多
文摘目的分析膝关节压力均衡术治疗膝关节退行性骨关节病(KOA)的围术期护理干预对自我管理、症状控制的影响,总结护理改进经验。方法选取相关研究对象84例,采用随机数字表分为对照组和观察组各42例,分别采用常规护理方式及在此基础上的综合护理干预,特别重视疼痛、肿胀的防控,注重提高康复训练、生活管理水平。结果观察组出院前、第3、6个月HSS评分高于对照组,第6个月观察组HSS优良率100.00%(42/42),高于对照组85.71%(36/42);观察组肿胀消退时间、术后3 d VAS均值水平、患侧膝关节训练开始时间低于对照组,术后1周膝关节训练次数,出院后膝关节训练维持时间高于对照组,差异有统计学意义(P<0.05)。结论加强综合护理干预后,进一步提高了患者的疾病管理水平,症状控制效果,有助于膝关节功能恢复。
基金Foundation item： Project（2011CB707201） supported by the National Basic Research Program of China Project（10JJ5058） supported by the Natural Science Foundation of Hunan Province, China
文摘To improve the energy utilization efficiency of internal combustion （IC） engine, exergy analysis was conducted on a passenger car gasoline engine. According to the thermodynamic theory of IC engine, in-cylinder exergy balance model was built. The working processes of gasoline engine were simulated by using the GT-power. In this way, the required parameters were calculated and then gasoline engine exergy balance was obtained by programming on computer. On this basis, the influences of various parameters on exergy balance were analyzed. Results show that, the proportions of various forms of exergy in gasoline engine from high to low are irreversible loss, effective work, exhaust gas exergy and heat transfer exergy. Effective exergy proportion fluctuates with cylinder volumetric efficiency at full load, while it always increases with break mean effective pressure （BMEP） at part load. Exhaust gas exergy proportion is more sensitive to speed, and it increases with speed increasing except at the highest speed. The lower proportion of heat transfer exergy appears at high speed and high load. Irreversible loss is mainly influenced by load. At part load, higher BMEP results in lower proportion of irreversible loss; at full load, the proportion of irreversible loss changes little except at the highest speed.
