目的探讨护士对临床报警的认知,发现报警管理有关的问题,为医院制定报警管理策略提供依据。方法 2017年2-3月,采用目的抽样法选取长沙市某三级甲等医院6个重症监护病区(intensive care unit,ICU)的护士为研究对象。运用现象学研究方法,...目的探讨护士对临床报警的认知,发现报警管理有关的问题,为医院制定报警管理策略提供依据。方法 2017年2-3月,采用目的抽样法选取长沙市某三级甲等医院6个重症监护病区(intensive care unit,ICU)的护士为研究对象。运用现象学研究方法,对18名ICU护士进行深入访谈。采用Colaizzi现象学7步分析法对资料进行分析,并提炼主题。结果经过对比分析,共提炼出6个主题:临床报警非常重要;临床报警的作用具有两面性;报警有关知识不足;存在与报警有关的危险行为;报警应答的胜任力不足;缺乏报警管理有关的制度与规范。结论重症监护护士重视临床报警,但需提高护士的胜任力,改善护士的报警行为,建立和实施报警管理规范,保障患者的安全。展开更多
Iron and copper bimetal ic catalysts with fixed total contents of copper and iron were prepared by a co-impregnation method,and then used for selective catalytic oxidation of ammonia to nitrogen.The properties of the ...Iron and copper bimetal ic catalysts with fixed total contents of copper and iron were prepared by a co-impregnation method,and then used for selective catalytic oxidation of ammonia to nitrogen.The properties of the catalysts were characterized by N2 adsorption-desorption,H2 temperature-programmed reduction(H2-TPR),NH3 temperature-programmed desorption(NH3-TPD),X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).The iron and copper bimetal ic catalysts exhibited good activity and high selectivity of N2 at the gas hourly space velocity(GHSV)of 100000 h-1.The activity and N2 selectivity in the low temperature range increased with increasing Cu loading,whereas in the high temperature range(above 400°C)the selectivity of N2 was directly related to the content of iron.The highest NH3 conversion was achieved at about 350°C for Fe0.25Cu0.75/ZSM-5,and the N2 selectivity was up to 97%at 300°C.On the other hand,the extremely high N2 selectivity about 98%was obtained over Fe0.75Cu0.25/ZSM-5 at 500°C.In addition,N2O as the by-product and greenhouse gas was obtained in very low amounts for al the catalysts.The characterization results showed that the activity was influenced by the acid content and the amounts of copper species.Moreover,the highly reducing capacity could improve the N2 selectivity.展开更多
文摘目的探讨护士对临床报警的认知,发现报警管理有关的问题,为医院制定报警管理策略提供依据。方法 2017年2-3月,采用目的抽样法选取长沙市某三级甲等医院6个重症监护病区(intensive care unit,ICU)的护士为研究对象。运用现象学研究方法,对18名ICU护士进行深入访谈。采用Colaizzi现象学7步分析法对资料进行分析,并提炼主题。结果经过对比分析,共提炼出6个主题:临床报警非常重要;临床报警的作用具有两面性;报警有关知识不足;存在与报警有关的危险行为;报警应答的胜任力不足;缺乏报警管理有关的制度与规范。结论重症监护护士重视临床报警,但需提高护士的胜任力,改善护士的报警行为,建立和实施报警管理规范,保障患者的安全。
文摘Iron and copper bimetal ic catalysts with fixed total contents of copper and iron were prepared by a co-impregnation method,and then used for selective catalytic oxidation of ammonia to nitrogen.The properties of the catalysts were characterized by N2 adsorption-desorption,H2 temperature-programmed reduction(H2-TPR),NH3 temperature-programmed desorption(NH3-TPD),X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).The iron and copper bimetal ic catalysts exhibited good activity and high selectivity of N2 at the gas hourly space velocity(GHSV)of 100000 h-1.The activity and N2 selectivity in the low temperature range increased with increasing Cu loading,whereas in the high temperature range(above 400°C)the selectivity of N2 was directly related to the content of iron.The highest NH3 conversion was achieved at about 350°C for Fe0.25Cu0.75/ZSM-5,and the N2 selectivity was up to 97%at 300°C.On the other hand,the extremely high N2 selectivity about 98%was obtained over Fe0.75Cu0.25/ZSM-5 at 500°C.In addition,N2O as the by-product and greenhouse gas was obtained in very low amounts for al the catalysts.The characterization results showed that the activity was influenced by the acid content and the amounts of copper species.Moreover,the highly reducing capacity could improve the N2 selectivity.
