BACKGROUND:To assess the effectiveness of the telephone chest-compression-only cardiopulmonary resuscitation(CPR)guided by a pre-recorded instructional audio when compared with dispatcher-assisted resuscitation.METHOD...BACKGROUND:To assess the effectiveness of the telephone chest-compression-only cardiopulmonary resuscitation(CPR)guided by a pre-recorded instructional audio when compared with dispatcher-assisted resuscitation.METHODS:It was a prospective,blind,randomised controlled study involving 109 medical students without previous CPR training.In a standardized mannequin scenario,after the step of dispatcher-assisted cardiac arrest recognition,the participants performed compression-only resuscitation guided over the telephone by either:(1)the pre-recorded instructional audio(n=57);or(2)verbal dispatcher assistance(n=52).The simulation video records were reviewed to assess the CPR performance using a 13-item checklist.The interval from call reception to the first compression,total number and rate of compressions,total number and duration of pauses after the first compression were also recorded.RESULTS:There were no significant differences between the recording-assisted and dispatcher-assisted groups based on the overall performance score(5.6±2.2 vs.5.1±1.9,P>0.05)or individual criteria of the CPR performance checklist.The recording-assisted group demonstrated provided(170.2±48.0 vs.156.2±60.7).CONCLUSION:When provided by untrained persons in the simulated settings,the compression-only resuscitation guided by the pre-recorded instructional audio is no less efficient than dispatcher-assisted CPR.Future studies are warranted to further assess feasibility of using instructional audio aid as a potential alternative to dispatcher assistance.展开更多
As a key to improve the performance of the interbay automated material handling system （AMHS） in 300 mm semiconductor wafer fabrication system, the real- time overhead hoist transport （OHT） dispatching problem has...As a key to improve the performance of the interbay automated material handling system （AMHS） in 300 mm semiconductor wafer fabrication system, the real- time overhead hoist transport （OHT） dispatching problem has received much attention. This problem is first formu- lated as a special form of assignment problem and it is proved that more than one solution will be obtained by Hungarian algorithm simultaneously. Through proposing and strictly proving two propositions related to the char- acteristics of these solutions, a modified Hungarian algo- rithm is designed to distinguish these solutions. Finally, a new real-time OHT dispatching method is carefully designed by implementing the solution obtained by the modified Hungarian algorithm. The experimental results of discrete event simulations show that, compared with con- ventional Hungarian algorithm dispatching method, the proposed dispatching method that chooses the solution with the maximum variance respectively reduces on average 4 s of the average waiting time and average lead time of wafer lots, and its performance is rather stable in multiple dif- ferent scenarios of the interbay AMHS with different quantities of shortcuts. This research provides an efficient real-time OHT dispatching mechanism for the interbay AMHS with shortcuts and bypasses.展开更多
Objective:To investigate the levels of zinc-α-2-glycoprotein(ZAG) among Omani AIDS patients receiving combined antiretroviral therapy(cART).Methods:A total of 80 Omani AIDS patients(45 males and 33 females),average a...Objective:To investigate the levels of zinc-α-2-glycoprotein(ZAG) among Omani AIDS patients receiving combined antiretroviral therapy(cART).Methods:A total of 80 Omani AIDS patients(45 males and 33 females),average age of 36 vears.who were receiving cART at the Saltan Qaboos University Hospital(SQUH).Muscat,Oman,were tested for the levels of ZAG.In addition,SO healthy blood donors(46 males and 34 females),average age of 26 years,attending the SOUH Blood Bank,were tested in parallel as a control group.Measurement of the ZAG levels was performed using a competitive enzyme—linked immunosorbent assay and in accordance with the manufacturer's instructions.Results:The ZAG levels were found to he significantly higher among AIDS patients compared to the healthy individuals(P=0.033).A total of 56(70%) of the AIDS patients were found to have higher levels of ZAG and 16(20%) AIDS patients were found to have high ZAG levels,which are significantly(P>0.031) associated with weight loss.Conclusions:ZAG levels are high among Omani AIDS patients on cART and this necessitales the measurement of ZAG on routine basis,as it is associated with weight loss.展开更多
目的评价高效抗逆转录病毒疗法(highly active antiretroviral therapy,HAART)对HIV/AIDS患者的疗效。方法采用HAART治疗73例HIV/AIDS患者,流式细胞仪测定治疗前后HIV/AIDS患者体内CD4+,CD8+T淋巴细胞数量,定量ELISA法检测血浆细胞因子I...目的评价高效抗逆转录病毒疗法(highly active antiretroviral therapy,HAART)对HIV/AIDS患者的疗效。方法采用HAART治疗73例HIV/AIDS患者,流式细胞仪测定治疗前后HIV/AIDS患者体内CD4+,CD8+T淋巴细胞数量,定量ELISA法检测血浆细胞因子IL-2,IL-10和TGF-β1水平。结果经HAART治疗后,CD4+T细胞数量显著回升(P(0.01),但CD8+T细胞变化不大(P(0.05)。血浆IL-10水平较治疗前明显下降(P(0.05),IL-2水平较治疗前升高(P(0.05),TGF-β1的水平显著降低(P(0.01)。结论HAART治疗HIV/AIDS患者疗效显著,对于重建免疫功能、改善体内细胞因子失调有明显效果。展开更多
HIV感染者即使接受了规律有效的抗病毒治疗,其体内仍然存在慢性长期的免疫激活,这已被证明是引起许多HIV相关非AIDS并发症的重要原因。其中固有免疫激活系统产生的趋化因子干扰素-γ诱导蛋白10(interferon gammainduced protein 10, IP...HIV感染者即使接受了规律有效的抗病毒治疗,其体内仍然存在慢性长期的免疫激活,这已被证明是引起许多HIV相关非AIDS并发症的重要原因。其中固有免疫激活系统产生的趋化因子干扰素-γ诱导蛋白10(interferon gammainduced protein 10, IP10)近年来在HIV研究领域受到更多的关注。IP10是一种由干扰素刺激基因产生的趋化蛋白,在HIV感染者疾病进展,与HIV感染者体内的适应性免疫系统相互作用,影响病毒储存库,引起非AIDS相关并发症方面起到重要作用。降低IP10水平或可为HIV感染者的治疗提供新的思路,为AIDS的功能性治愈奠定基础。展开更多
文摘BACKGROUND:To assess the effectiveness of the telephone chest-compression-only cardiopulmonary resuscitation(CPR)guided by a pre-recorded instructional audio when compared with dispatcher-assisted resuscitation.METHODS:It was a prospective,blind,randomised controlled study involving 109 medical students without previous CPR training.In a standardized mannequin scenario,after the step of dispatcher-assisted cardiac arrest recognition,the participants performed compression-only resuscitation guided over the telephone by either:(1)the pre-recorded instructional audio(n=57);or(2)verbal dispatcher assistance(n=52).The simulation video records were reviewed to assess the CPR performance using a 13-item checklist.The interval from call reception to the first compression,total number and rate of compressions,total number and duration of pauses after the first compression were also recorded.RESULTS:There were no significant differences between the recording-assisted and dispatcher-assisted groups based on the overall performance score(5.6±2.2 vs.5.1±1.9,P>0.05)or individual criteria of the CPR performance checklist.The recording-assisted group demonstrated provided(170.2±48.0 vs.156.2±60.7).CONCLUSION:When provided by untrained persons in the simulated settings,the compression-only resuscitation guided by the pre-recorded instructional audio is no less efficient than dispatcher-assisted CPR.Future studies are warranted to further assess feasibility of using instructional audio aid as a potential alternative to dispatcher assistance.
基金Supported by National Natural Science Foundation of China(Grant No.51275307)
文摘As a key to improve the performance of the interbay automated material handling system （AMHS） in 300 mm semiconductor wafer fabrication system, the real- time overhead hoist transport （OHT） dispatching problem has received much attention. This problem is first formu- lated as a special form of assignment problem and it is proved that more than one solution will be obtained by Hungarian algorithm simultaneously. Through proposing and strictly proving two propositions related to the char- acteristics of these solutions, a modified Hungarian algo- rithm is designed to distinguish these solutions. Finally, a new real-time OHT dispatching method is carefully designed by implementing the solution obtained by the modified Hungarian algorithm. The experimental results of discrete event simulations show that, compared with con- ventional Hungarian algorithm dispatching method, the proposed dispatching method that chooses the solution with the maximum variance respectively reduces on average 4 s of the average waiting time and average lead time of wafer lots, and its performance is rather stable in multiple dif- ferent scenarios of the interbay AMHS with different quantities of shortcuts. This research provides an efficient real-time OHT dispatching mechanism for the interbay AMHS with shortcuts and bypasses.
基金Supported by the Research Council of the Sultanate of Oman(RC/MED/MICR/11/01)the College of Medicine and Health Sciences,Sultan Qaboos University(Internal-Grant/2013).Oman
文摘Objective:To investigate the levels of zinc-α-2-glycoprotein(ZAG) among Omani AIDS patients receiving combined antiretroviral therapy(cART).Methods:A total of 80 Omani AIDS patients(45 males and 33 females),average age of 36 vears.who were receiving cART at the Saltan Qaboos University Hospital(SQUH).Muscat,Oman,were tested for the levels of ZAG.In addition,SO healthy blood donors(46 males and 34 females),average age of 26 years,attending the SOUH Blood Bank,were tested in parallel as a control group.Measurement of the ZAG levels was performed using a competitive enzyme—linked immunosorbent assay and in accordance with the manufacturer's instructions.Results:The ZAG levels were found to he significantly higher among AIDS patients compared to the healthy individuals(P=0.033).A total of 56(70%) of the AIDS patients were found to have higher levels of ZAG and 16(20%) AIDS patients were found to have high ZAG levels,which are significantly(P>0.031) associated with weight loss.Conclusions:ZAG levels are high among Omani AIDS patients on cART and this necessitales the measurement of ZAG on routine basis,as it is associated with weight loss.
文摘目的评价高效抗逆转录病毒疗法(highly active antiretroviral therapy,HAART)对HIV/AIDS患者的疗效。方法采用HAART治疗73例HIV/AIDS患者,流式细胞仪测定治疗前后HIV/AIDS患者体内CD4+,CD8+T淋巴细胞数量,定量ELISA法检测血浆细胞因子IL-2,IL-10和TGF-β1水平。结果经HAART治疗后,CD4+T细胞数量显著回升(P(0.01),但CD8+T细胞变化不大(P(0.05)。血浆IL-10水平较治疗前明显下降(P(0.05),IL-2水平较治疗前升高(P(0.05),TGF-β1的水平显著降低(P(0.01)。结论HAART治疗HIV/AIDS患者疗效显著,对于重建免疫功能、改善体内细胞因子失调有明显效果。
文摘HIV感染者即使接受了规律有效的抗病毒治疗,其体内仍然存在慢性长期的免疫激活,这已被证明是引起许多HIV相关非AIDS并发症的重要原因。其中固有免疫激活系统产生的趋化因子干扰素-γ诱导蛋白10(interferon gammainduced protein 10, IP10)近年来在HIV研究领域受到更多的关注。IP10是一种由干扰素刺激基因产生的趋化蛋白,在HIV感染者疾病进展,与HIV感染者体内的适应性免疫系统相互作用,影响病毒储存库,引起非AIDS相关并发症方面起到重要作用。降低IP10水平或可为HIV感染者的治疗提供新的思路,为AIDS的功能性治愈奠定基础。
