目的探讨中文版老年听力障碍筛查量表(hearing handicap inventory for the elderly-screening,HHIE-S)评分与纯音听阈测试的关联性与差异性,为该量表的临床应用提供依据。方法275例老年受试者(听力正常者47例、不同程度听力损失者228例...目的探讨中文版老年听力障碍筛查量表(hearing handicap inventory for the elderly-screening,HHIE-S)评分与纯音听阈测试的关联性与差异性,为该量表的临床应用提供依据。方法275例老年受试者(听力正常者47例、不同程度听力损失者228例)填写中文版HHIE-S量表获得评分,并进行纯音听阈测试,比较受试者中文版HHIE-S量表评分与较好耳500、1000、2000、4000 Hz纯音气导听阈平均值(PTA)之间的关联性与差异性。结果275例受试者中,PTA正常组47例,HHIE-S评分为无听力障碍者占80.85%(38/47);PTA轻度听力损失组101例,HHIE-S评分为轻中度听障者占38.61%(39/101);PTA中度听力损失组110例,HHIE-S评分为轻中度听障者占40.0%(44/110);PTA重度听力损失组17例,HHIE-S评分为重度听障者占82.35%(14/17)。HHIE-S与纯音听阈测试结果的Kappa系数为0.210(P<0.001)。HHIE-S评分与PTA的Pearson相关系数r为0.722(P<0.001)。以PTA≤25 dB HL为听力正常、HHIE-S评分≤8分表示无听力障碍,HHIE-S量表的敏感性为61.0%,特异性为80.9%,阳性预测值为93.9%,阴性预测值为29.9%。结论HHIE-S量表与纯音听阈测试既有较好的关联性,又有差异性,二者联合应用可以全面评估老年人的听力状况。展开更多
ZnO/Znml2O4 nanocomposites with heteronanostructures were successfully prepared by co-precipitation method. The as-prepared samples were characterized by HRTEM, TEM, XRD, BET, TG-DTA, and UV-Vis spectra techniques. Th...ZnO/Znml2O4 nanocomposites with heteronanostructures were successfully prepared by co-precipitation method. The as-prepared samples were characterized by HRTEM, TEM, XRD, BET, TG-DTA, and UV-Vis spectra techniques. The photoeatalytic activities of the as-prepared samples were evaluated by the photocatalytic degradation of methyl orange and inactivation of Escherichia coli in suspension under the irradiation of the simulated sunlight. The effects of compositions, calcination temperatures, concentration ofphotocatalysts and light source on the photocatalytic activities were systematically studied. The results show that when the concentration of ZnO/ZnA1204 photocatalyst with the starting Zn to Al molar ratio of 1:1.5 calcined at 600 ℃ is 1.0 g/L, the maximum photocatalytic degradation rate of 98.5% can be obtained in 50 min under the irradiation of the simulated sunlight. Under the same conditions, an inactivation rate of 99.8% for E.coli is achieved in 60 min.展开更多
文摘目的探讨中文版老年听力障碍筛查量表(hearing handicap inventory for the elderly-screening,HHIE-S)评分与纯音听阈测试的关联性与差异性,为该量表的临床应用提供依据。方法275例老年受试者(听力正常者47例、不同程度听力损失者228例)填写中文版HHIE-S量表获得评分,并进行纯音听阈测试,比较受试者中文版HHIE-S量表评分与较好耳500、1000、2000、4000 Hz纯音气导听阈平均值(PTA)之间的关联性与差异性。结果275例受试者中,PTA正常组47例,HHIE-S评分为无听力障碍者占80.85%(38/47);PTA轻度听力损失组101例,HHIE-S评分为轻中度听障者占38.61%(39/101);PTA中度听力损失组110例,HHIE-S评分为轻中度听障者占40.0%(44/110);PTA重度听力损失组17例,HHIE-S评分为重度听障者占82.35%(14/17)。HHIE-S与纯音听阈测试结果的Kappa系数为0.210(P<0.001)。HHIE-S评分与PTA的Pearson相关系数r为0.722(P<0.001)。以PTA≤25 dB HL为听力正常、HHIE-S评分≤8分表示无听力障碍,HHIE-S量表的敏感性为61.0%,特异性为80.9%,阳性预测值为93.9%,阴性预测值为29.9%。结论HHIE-S量表与纯音听阈测试既有较好的关联性,又有差异性,二者联合应用可以全面评估老年人的听力状况。
基金Project(21271071)supported by the National Natural Science Foundation of ChinaProject(21306041)supported by the National Natural Science Young Foundation of China
文摘ZnO/Znml2O4 nanocomposites with heteronanostructures were successfully prepared by co-precipitation method. The as-prepared samples were characterized by HRTEM, TEM, XRD, BET, TG-DTA, and UV-Vis spectra techniques. The photoeatalytic activities of the as-prepared samples were evaluated by the photocatalytic degradation of methyl orange and inactivation of Escherichia coli in suspension under the irradiation of the simulated sunlight. The effects of compositions, calcination temperatures, concentration ofphotocatalysts and light source on the photocatalytic activities were systematically studied. The results show that when the concentration of ZnO/ZnA1204 photocatalyst with the starting Zn to Al molar ratio of 1:1.5 calcined at 600 ℃ is 1.0 g/L, the maximum photocatalytic degradation rate of 98.5% can be obtained in 50 min under the irradiation of the simulated sunlight. Under the same conditions, an inactivation rate of 99.8% for E.coli is achieved in 60 min.