The building energy consumption is an important part among the total society energy consumption,in which the energy consumption for air conditioning occupies almost 70%.The energy consumption of the air conditioning s...The building energy consumption is an important part among the total society energy consumption,in which the energy consumption for air conditioning occupies almost 70%.The energy consumption of the air conditioning system for fresh air handling can be saved effectively when the exhaust air energy could be recovered to preheat or precool the fresh air.Considering the install locations requirements on field,the pump-driven heat pipes(PHP)were developed as heat recovery ventilators(HRVs)and used in an existing experiment building in Beijing Urban.The thermal performance of the PHP HRVs was tested in real operation time periods under winter running mode.Both the power and heat consumption of the modular air handling units with and without HRVs were monitored and obtained,as well as the hourly power and heat consumption.The energy savings of HRVs were analyzed.The results indicate that the PHP HRVs can work steadily and meet the energy recovery need well.The temperature effectiveness of the HRVs can be kept from 60%to 70%.The test total energy saving rate was 24.48%,and the average hourly heat consumption reduced by 28.54%.The daily energy consumption can be saved by 118 kWh,and the energy savings can reach to 9440 kWh for a whole winter.展开更多
目的·系统评价预康复对择期行胃肠道手术患者术后恢复的影响。方法·系统检索PubMed、EMbase、Cochrane Library、Web of Science、CINAHL、中国生物医学文献数据库(CBM)、中国知网、万方、维普数据库,检索时限均为建库至2022...目的·系统评价预康复对择期行胃肠道手术患者术后恢复的影响。方法·系统检索PubMed、EMbase、Cochrane Library、Web of Science、CINAHL、中国生物医学文献数据库(CBM)、中国知网、万方、维普数据库,检索时限均为建库至2022年1月31日。按照预先设定的标准筛选文献,对文献质量进行评价并提取资料,对纳入的随机对照试验采用RevMan 5.4进行meta分析。主要观察指标为术后总体并发症发生率和手术部位感染发生率,次要观察指标为住院天数、6 min步行试验(6-minute walk test,6MWT)、医院焦虑抑郁量表(Hospital Anxiety and Depression Scale,HADS)评分,以及死亡率和预康复执行的依从性。结果·共纳入16篇文献,其中英文15篇,中文1篇,共1616例研究对象,纳入研究的总体质量较好。Meta分析结果显示,相较于对照组,实施了预康复的试验组患者术后总体并发症的发生率降低[比值比(odds ratio,OR)=0.57,95%置信区间(confidence interval,CI)0.35~0.94,P=0.030],手术部位感染发生率降低(OR=0.64,95%CI 0.46~0.90,P=0.009),住院天数缩短[均数差值(mean difference,MD)=-2.45,95%CI-3.17~-1.73,P=0.000]。2组患者术前6MWT水平的差异无统计学意义;试验组术前6MWT水平相较于基线的提升程度优于对照组(MD=24.19,95%CI 3.77~44.60,P=0.020)。2组患者术前HADS评分和术后死亡率差异均无统计学意义。结论·预康复有利于降低胃肠道择期手术患者术后总体并发症发生率,尤其是手术部位感染发生率,从而缩短住院天数,有利于患者康复。展开更多
目的:统计分析2016—2020年期间发表的针灸治疗胃肠疾病的实验研究文献,总结归纳针灸治疗胃肠道疾病的主要研究方向与进展。方法:检索国家知识基础设施数据库(CNKI)、中国学术期刊数据库(CSPD)、中文科技期刊数据库(CCD)、Pubmed及Web o...目的:统计分析2016—2020年期间发表的针灸治疗胃肠疾病的实验研究文献,总结归纳针灸治疗胃肠道疾病的主要研究方向与进展。方法:检索国家知识基础设施数据库(CNKI)、中国学术期刊数据库(CSPD)、中文科技期刊数据库(CCD)、Pubmed及Web of Science数据库,根据纳入与排除标准筛选针灸治疗胃肠疾病的实验研究文献,并对结果进行计量统计分析。结果:近5年来针灸治疗功能性胃肠疾病的实验研究以肠易激综合征与功能性消化不良为主,器质性胃肠病则是以溃疡性结肠炎为主。电针和灸法是针灸治疗胃肠疾病的主要方法,功能性胃肠病以电针干预为主,器质性胃肠病以灸法为主。足三里、天枢、上巨虚、中脘是针灸治疗胃肠疾病的主要穴位。功能性胃肠疾病的针灸实验研究侧重于胃肠动力、内脏高敏感、情绪相关机制,器质性胃肠疾病的针灸实验研究侧重于炎症与免疫相关机制。结论:近5年针灸治疗功能性胃肠疾病实验以电针干预为主,侧重于胃肠动力、内脏高敏感、情绪相关机制研究;器质性胃肠病的针灸实验研究以灸法为主,侧重于炎症与免疫相关机制。展开更多
目的探讨行腹腔镜胆总管探查取石伴T管引流术病人在围手术期应用加速术后康复(enhanced recovery after surgery,ERAS)的疗效及影响因素分析。方法回顾性分析在2019年9月至2021年9月在湖北医药学院附属人民医院确诊为胆总管结石并行腹...目的探讨行腹腔镜胆总管探查取石伴T管引流术病人在围手术期应用加速术后康复(enhanced recovery after surgery,ERAS)的疗效及影响因素分析。方法回顾性分析在2019年9月至2021年9月在湖北医药学院附属人民医院确诊为胆总管结石并行腹腔镜下胆总管探查取石伴T管引流术的病人,在其中选取100例病人纳入研究,按照其围手术期处理措施分成研究组(ERAS组,52例)和对照组(传统外科护理组,48例),比较两组病人的手术治疗情况、术后并发症发生情况以及手术前后相关实验室指标的变化情况,并将研究组根据术后住院时间中位数分为两组,≤7 d为A组(32例),>7 d为B组(20例),通过单因素及多因素分析影响完成ERAS的相关因素。结果研究组与对照组基线资料之间具有可比性。研究组在术后引流管拔除时间、术后下床时间、术后肛门排气时间、术后总输液量、住院时间、住院费用、术前禁食水时间、术后禁食水时间、夜晚睡眠时间、术后第一次疼痛评分、出院满意度评分指标上均优于对照组,差异均有统计学意义(均P<0.05);研究组在胆漏发生情况上明显少于对照组,差异有统计学意义(P<0.05);研究组术后直接胆红素较术前下降幅度明显大于对照组,白蛋白较术前下降幅度明显小于对照组,差异均有统计学意义(均P<0.05)。单因素分析显示,A组与B组在年龄、术后肛门排气时间、夜晚睡眠时间方面差异均有统计学意义(P值分别为0.001,0.015,0.005);多因素分析显示,A组与B组在术后肛门排气时间[OR=1.447,95%CI(1.024,2.045),P=0.036]、夜晚睡眠时间[OR=0.016,95%CI(0.001,0.332),P=0.007]方面差异均有统计学意义,为实施ERAS的影响因素。结论ERAS可以提高行腹腔镜胆总管探查取石伴T管引流术病人围手术期的恢复,提高术后生活质量,减轻病人经济负担。展开更多
基金supported by the Project of Science and Technology Program of Beijing Municipal Chao Yang District(CYSF2005,Zhun Li,http://www.bjchy.gov.cn/dynamic/notice/8a24fe83722fa7180172360a3f46044c.html).
文摘The building energy consumption is an important part among the total society energy consumption,in which the energy consumption for air conditioning occupies almost 70%.The energy consumption of the air conditioning system for fresh air handling can be saved effectively when the exhaust air energy could be recovered to preheat or precool the fresh air.Considering the install locations requirements on field,the pump-driven heat pipes(PHP)were developed as heat recovery ventilators(HRVs)and used in an existing experiment building in Beijing Urban.The thermal performance of the PHP HRVs was tested in real operation time periods under winter running mode.Both the power and heat consumption of the modular air handling units with and without HRVs were monitored and obtained,as well as the hourly power and heat consumption.The energy savings of HRVs were analyzed.The results indicate that the PHP HRVs can work steadily and meet the energy recovery need well.The temperature effectiveness of the HRVs can be kept from 60%to 70%.The test total energy saving rate was 24.48%,and the average hourly heat consumption reduced by 28.54%.The daily energy consumption can be saved by 118 kWh,and the energy savings can reach to 9440 kWh for a whole winter.
文摘目的:统计分析2016—2020年期间发表的针灸治疗胃肠疾病的实验研究文献,总结归纳针灸治疗胃肠道疾病的主要研究方向与进展。方法:检索国家知识基础设施数据库(CNKI)、中国学术期刊数据库(CSPD)、中文科技期刊数据库(CCD)、Pubmed及Web of Science数据库,根据纳入与排除标准筛选针灸治疗胃肠疾病的实验研究文献,并对结果进行计量统计分析。结果:近5年来针灸治疗功能性胃肠疾病的实验研究以肠易激综合征与功能性消化不良为主,器质性胃肠病则是以溃疡性结肠炎为主。电针和灸法是针灸治疗胃肠疾病的主要方法,功能性胃肠病以电针干预为主,器质性胃肠病以灸法为主。足三里、天枢、上巨虚、中脘是针灸治疗胃肠疾病的主要穴位。功能性胃肠疾病的针灸实验研究侧重于胃肠动力、内脏高敏感、情绪相关机制,器质性胃肠疾病的针灸实验研究侧重于炎症与免疫相关机制。结论:近5年针灸治疗功能性胃肠疾病实验以电针干预为主,侧重于胃肠动力、内脏高敏感、情绪相关机制研究;器质性胃肠病的针灸实验研究以灸法为主,侧重于炎症与免疫相关机制。
