The effect of intensity accents on detection of temporal irregularities is investigated in a 3×3 behavior experiment with independent variables of inter-onset-interval （IOI） length and intensity. In a 5-beat is...The effect of intensity accents on detection of temporal irregularities is investigated in a 3×3 behavior experiment with independent variables of inter-onset-interval （IOI） length and intensity. In a 5-beat isochronous sequence, both the length of the third IOI and the intensity of succeeding beat are manipulated to three different levels separately （IOI length： longer Llo, shorter Lsh, or standard Lst. Intensity： louder Ilo, softer Iso, or standard Ist）. Subjects are required to discriminate the third IOI length with different responses respectively. The discrimination sensitivity index （d′） and response criterion （C） are assessed simultaneously for each stimulus condition. Statistical analysis reveals an asymmetric effect of intensity accents on detection of IOI deviations in an isochronous sequence, i.e. the loud accent mainly reduces the sensitivity for both shorter and standard IOIs, and the soft accent might introduce a disturbance into the temporal perception, especially in the detection of the short IOIs. Importantly, when preceding a louder accent, the short IOIs are significantly difficult to detect than the long ones, as consistent with the compensation hypothesis.展开更多
The heterogeneity of adsorption sites and adsorption kinetics of n-hexane on a chromium terephthalate-based metal-organic framework MIL-10^1 （Cr） were studied by gravimetric method and temperature-programmed desorpt...The heterogeneity of adsorption sites and adsorption kinetics of n-hexane on a chromium terephthalate-based metal-organic framework MIL-10^1 （Cr） were studied by gravimetric method and temperature-programmed desorption （TPD） experiments. The MIL-101 crystals were synthesized by microwave irradiation method. The ad- sorption isotherms and kinetic curves of n-hexane on the MIL-101 were measured. Desorption activation energies of n-hexane from the MIL-10^1 were estimated by TPD experiments. The resulthowed that equilibrium amount ofn-hexane adsorbed on the MIL-10^1 was up to 5.62 mmol.g- 1 at 298 K and 1.6 x10^4 Pa, much higher than that of some activated carbons, zeolltes and so on. The isotherms of n-hexane on the MIL-101 could be well fitted with Langmuir-Freundlich model. TPD spectra exhibit two types of adsorption sites on the MIL-101 with desorption activation energies of 39.41 and 86.69 kJ. mol-1. It reflects the surface energy heterogeneity on the MIL-10I frameworks for n-hexane adsorption. The diffusion coefficients of n-hexane are in the range of （1.35- 2.35 ） x 10 - 1 o cm2. s - 1 with ad sorotion activation enerv of 16.33 kl. mol - 1.展开更多
目的探讨单、双耳佩戴助听器对助听效果的影响。方法应用助听器效果国际性调查问卷(the international outcome inventory for hearing aids,IOI-HA)和中等声强度(65dB SPL)下的言语识别率测试,对26例单耳佩戴及21例双耳佩戴助听器的成...目的探讨单、双耳佩戴助听器对助听效果的影响。方法应用助听器效果国际性调查问卷(the international outcome inventory for hearing aids,IOI-HA)和中等声强度(65dB SPL)下的言语识别率测试,对26例单耳佩戴及21例双耳佩戴助听器的成年重度感音神经性聋患者进行助听效果评估。结果重度感音神经性聋患者佩戴助听器后,单耳佩戴者的单音节词、安静及噪声下语句识别率改善值分别为35.73%、43.15%、43.23%,双耳佩戴者分别为37.90%、51.33%、54.86%,且双耳佩戴者的言语识别率高于单耳佩戴者;单、双耳佩戴者IOIHA整体得分分别为29.96±3.04和29.52±5.29分,对助听器使用效果满意度均较高,且两者间IOI-HA得分差异无统计学意义(P>0.05)。结论双耳佩戴助听器的语句识别率高于单耳佩戴者,对双耳听力障碍者建议双耳选配助听器。展开更多
目的探讨老年聋患者以远程的方式验配助听器后的助听效果。方法选取老年聋患者20人，随机分为两组：第一组10人，以远程的方式验配助听器；第二组10人，以面对面的方式验配助听器。分别采用言语测听及问卷评估的方式对配戴助听器前以及...目的探讨老年聋患者以远程的方式验配助听器后的助听效果。方法选取老年聋患者20人，随机分为两组：第一组10人，以远程的方式验配助听器；第二组10人，以面对面的方式验配助听器。分别采用言语测听及问卷评估的方式对配戴助听器前以及配戴助听器6N后的效果进行评价。言语测听材料选择普通话言语测听材料（mandarin speech test materials，MSTMs）的双音节辨别率测试，问卷选择国际助听器效果评定问卷（IOI-HA）。结果①两组患者助听下言语辨别率得分无显著差异（t=0．32，P=0．750〉0．05），②两组患者配戴助听器后问卷评估得分无显著差异（t=0．95，P=0．35〉0．05）；③入组患者在安静环境下言语辨别能力配戴助听后显著优于未助听时的言语辨别能力（t=6．39，P=0．00〈0．05）；④入组患者配戴助听器6周后问卷评估结果显示5％的患者对助听器效果满意，80％的患者认为助听器效果一般，15％的患者对助听器效果不满意。结论可以采用远程助听器验配技术对不方便来听力中心就诊的患者进行助听器验配及调试。助听器可有效提高患者在安静环境中的言语辨别能力。仍应通过双耳验配、助听辅助技术等方式提高患者在日常生活环境中的助听器使用满意度。展开更多
基金supported by the National Natural Science Foundation of China under Grant No.60736029,30870655, and 30525030
文摘The effect of intensity accents on detection of temporal irregularities is investigated in a 3×3 behavior experiment with independent variables of inter-onset-interval （IOI） length and intensity. In a 5-beat isochronous sequence, both the length of the third IOI and the intensity of succeeding beat are manipulated to three different levels separately （IOI length： longer Llo, shorter Lsh, or standard Lst. Intensity： louder Ilo, softer Iso, or standard Ist）. Subjects are required to discriminate the third IOI length with different responses respectively. The discrimination sensitivity index （d′） and response criterion （C） are assessed simultaneously for each stimulus condition. Statistical analysis reveals an asymmetric effect of intensity accents on detection of IOI deviations in an isochronous sequence, i.e. the loud accent mainly reduces the sensitivity for both shorter and standard IOIs, and the soft accent might introduce a disturbance into the temporal perception, especially in the detection of the short IOIs. Importantly, when preceding a louder accent, the short IOIs are significantly difficult to detect than the long ones, as consistent with the compensation hypothesis.
基金Supported by the National Natural Science Foundation of China(21276092)the Research Foundation of State Key Lab of Subtropical Building Science of China(C713001z)+2 种基金the Science and Technology Research Foundation of Guangzhou City,China(200910814001)Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control(2011A060901011)the Fundamental Research Funds for the Central Universities(2013ZZ0060 and 2013ZM0056)
文摘The heterogeneity of adsorption sites and adsorption kinetics of n-hexane on a chromium terephthalate-based metal-organic framework MIL-10^1 （Cr） were studied by gravimetric method and temperature-programmed desorption （TPD） experiments. The MIL-101 crystals were synthesized by microwave irradiation method. The ad- sorption isotherms and kinetic curves of n-hexane on the MIL-101 were measured. Desorption activation energies of n-hexane from the MIL-10^1 were estimated by TPD experiments. The resulthowed that equilibrium amount ofn-hexane adsorbed on the MIL-10^1 was up to 5.62 mmol.g- 1 at 298 K and 1.6 x10^4 Pa, much higher than that of some activated carbons, zeolltes and so on. The isotherms of n-hexane on the MIL-101 could be well fitted with Langmuir-Freundlich model. TPD spectra exhibit two types of adsorption sites on the MIL-101 with desorption activation energies of 39.41 and 86.69 kJ. mol-1. It reflects the surface energy heterogeneity on the MIL-10I frameworks for n-hexane adsorption. The diffusion coefficients of n-hexane are in the range of （1.35- 2.35 ） x 10 - 1 o cm2. s - 1 with ad sorotion activation enerv of 16.33 kl. mol - 1.
文摘目的探讨单、双耳佩戴助听器对助听效果的影响。方法应用助听器效果国际性调查问卷(the international outcome inventory for hearing aids,IOI-HA)和中等声强度(65dB SPL)下的言语识别率测试,对26例单耳佩戴及21例双耳佩戴助听器的成年重度感音神经性聋患者进行助听效果评估。结果重度感音神经性聋患者佩戴助听器后,单耳佩戴者的单音节词、安静及噪声下语句识别率改善值分别为35.73%、43.15%、43.23%,双耳佩戴者分别为37.90%、51.33%、54.86%,且双耳佩戴者的言语识别率高于单耳佩戴者;单、双耳佩戴者IOIHA整体得分分别为29.96±3.04和29.52±5.29分,对助听器使用效果满意度均较高,且两者间IOI-HA得分差异无统计学意义(P>0.05)。结论双耳佩戴助听器的语句识别率高于单耳佩戴者,对双耳听力障碍者建议双耳选配助听器。
文摘目的探讨老年聋患者以远程的方式验配助听器后的助听效果。方法选取老年聋患者20人，随机分为两组：第一组10人，以远程的方式验配助听器；第二组10人，以面对面的方式验配助听器。分别采用言语测听及问卷评估的方式对配戴助听器前以及配戴助听器6N后的效果进行评价。言语测听材料选择普通话言语测听材料（mandarin speech test materials，MSTMs）的双音节辨别率测试，问卷选择国际助听器效果评定问卷（IOI-HA）。结果①两组患者助听下言语辨别率得分无显著差异（t=0．32，P=0．750〉0．05），②两组患者配戴助听器后问卷评估得分无显著差异（t=0．95，P=0．35〉0．05）；③入组患者在安静环境下言语辨别能力配戴助听后显著优于未助听时的言语辨别能力（t=6．39，P=0．00〈0．05）；④入组患者配戴助听器6周后问卷评估结果显示5％的患者对助听器效果满意，80％的患者认为助听器效果一般，15％的患者对助听器效果不满意。结论可以采用远程助听器验配技术对不方便来听力中心就诊的患者进行助听器验配及调试。助听器可有效提高患者在安静环境中的言语辨别能力。仍应通过双耳验配、助听辅助技术等方式提高患者在日常生活环境中的助听器使用满意度。
