930113 A comparative study of the effects ofcontrol ventilation and synchronized intermit-tent mandatory ventilation on hemodynamicsand blood gases in patients with chronic obstruc-tive pulmonary disease.BAI Chunxue...930113 A comparative study of the effects ofcontrol ventilation and synchronized intermit-tent mandatory ventilation on hemodynamicsand blood gases in patients with chronic obstruc-tive pulmonary disease.BAI Chunxue（白春学）,et al.Zhongshan Hosp,Shanghai Med Univ,200032.Chin J Tuberc & Respir Dis 1992;15（4）:220-221.Effects of control ventilation（CV）and syn-chronized intermittent mandatory ventilation（SIMV）were comparatively studied in 9 pa-tients with chronic obstructive pulmonary dis-ease.Cardiac index(from 2.99±0.65 to 3.60±0.651·min<sup>-1</sup>·m<sup>-2</sup>,P【0.05)and oxygen de-展开更多
This paper investigates the impact of inter-layer coupling functions and intra-layer coupling delays on intra-layer synchronization regions and sychronizability. It is found that the inter-layer coupling functions hav...This paper investigates the impact of inter-layer coupling functions and intra-layer coupling delays on intra-layer synchronization regions and sychronizability. It is found that the inter-layer coupling functions have great influence on intra-layer synchronization regions, as well as on the intra-layer synchronizability. In particular, there exists an inter-layer coupling function such that the inter-layer coupling strength neither improves nor weakens the intra-layer synchronizability. Furthermore, no matter which one of three inter-layer coupling functions is chosen, a small intra-layer delay always keeps the intra-layer synchronized regions almost unchanged, implying that the small delay neither enhances nor suppresses the intra-layer synchronizability. At the same time the delay greatly frustrates the synchronizability in each layer when it is greater than some threshold. Our results may have potential applications for interconnected technological networks where communication delays are inevitably present.展开更多
This paper modifies the weighted probabilistic cellular automaton model （Li X L, Kuang H, Song T, et al 2008 Chin. Phys. B 17 2366） which considered a diversity of traffic behaviors under real traffic situations ind...This paper modifies the weighted probabilistic cellular automaton model （Li X L, Kuang H, Song T, et al 2008 Chin. Phys. B 17 2366） which considered a diversity of traffic behaviors under real traffic situations induced by various driving characters and habits. In the new model, the effects of the velocity at the last time step and drivers＇ desire for acceleration are taken into account. The fundamental diagram, spatial-temporal diagram, and the time series of one-minute data are analyzed. The results show that this model reproduces synchronized flow. Finally, it simulates the on-ramp system with the proposed model. Some characteristics including the phase diagram are studied.展开更多
目的探讨早产儿在相同呼气末正压(PEEP)水平下经鼻持续呼吸道正压(N-CPAP)模式和同步间歇正压通气(SIPPV)模式对心功能的影响。方法选择本院新生儿重症监护病房2009年3月-2011年5月收治的80例早产儿进行配对分析。其中N-CPAP治疗的20例...目的探讨早产儿在相同呼气末正压(PEEP)水平下经鼻持续呼吸道正压(N-CPAP)模式和同步间歇正压通气(SIPPV)模式对心功能的影响。方法选择本院新生儿重症监护病房2009年3月-2011年5月收治的80例早产儿进行配对分析。其中N-CPAP治疗的20例急性呼吸窘迫综合征(RDS)患儿和SIPPV治疗的20例RDS患儿作为病例组(共40例),另外40例同期住院的一般疾病患儿按胎龄和日龄与病例组配成40对,应用彩色多普勒超声心动图检测所有患儿心脏泵血功能指标及各瓣口流速指标,比较2种通气模式对早产儿心功能指标的差异及2种不同通气方式下相同PEEP水平对早产儿心功能的影响。结果 N-CPAP组患儿肺动脉瓣口峰值流速,主动脉瓣口峰值流速,二、三尖瓣E/A值,射血分数,心排出量的均值均低于其配对组患儿,但差异均无统计学意义(Pa>0.05);SIPPV组患儿以上指标均值亦低于其配对组,其中肺动脉瓣口峰值流速,二、三尖瓣E/A值差异均有统计学意义(Pa<0.05);N-CPAP组与SIPPV组比较,SIPPV组各项心功能指标均值均低于N-CPAP组,其中对于三尖瓣E/A值的影响更明显,2组比较差异有统计学意义(0.71±0.05 vs 1.85±0.64,P<0.05)。结论 N-CPAP对早产儿心功能的影响不明显;SIPPV主要影响全心舒张功能、肺动脉及主动脉瓣峰值流速;相同PEEP水平下,SIPPV与N-CPAP相比,SIPPV主要影响早产儿的三尖瓣E/A值及右心室舒张功能。展开更多
文摘930113 A comparative study of the effects ofcontrol ventilation and synchronized intermit-tent mandatory ventilation on hemodynamicsand blood gases in patients with chronic obstruc-tive pulmonary disease.BAI Chunxue（白春学）,et al.Zhongshan Hosp,Shanghai Med Univ,200032.Chin J Tuberc & Respir Dis 1992;15（4）:220-221.Effects of control ventilation（CV）and syn-chronized intermittent mandatory ventilation（SIMV）were comparatively studied in 9 pa-tients with chronic obstructive pulmonary dis-ease.Cardiac index(from 2.99±0.65 to 3.60±0.651·min<sup>-1</sup>·m<sup>-2</sup>,P【0.05)and oxygen de-
基金supported by the National Key Research and Development Program of China (Grant No. 2016YFB0800401)the National Natural Science Foundation of China (Grant Nos. 61621003, 61532020, 61573262, 61573004)+3 种基金the Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University (Grant No. ZQNYX301, ZQN-PY401)the Natural Science Foundation of Fujian Province (Grant Nos. 2015J01260, 2015J01584)the Program for New Century Excellent Talents in Fujian Province University in 2016the Cultivation Program for Outstanding Young Scientific Talents of the Higher Education Institutions of Fujian Province in 2016
文摘This paper investigates the impact of inter-layer coupling functions and intra-layer coupling delays on intra-layer synchronization regions and sychronizability. It is found that the inter-layer coupling functions have great influence on intra-layer synchronization regions, as well as on the intra-layer synchronizability. In particular, there exists an inter-layer coupling function such that the inter-layer coupling strength neither improves nor weakens the intra-layer synchronizability. Furthermore, no matter which one of three inter-layer coupling functions is chosen, a small intra-layer delay always keeps the intra-layer synchronized regions almost unchanged, implying that the small delay neither enhances nor suppresses the intra-layer synchronizability. At the same time the delay greatly frustrates the synchronizability in each layer when it is greater than some threshold. Our results may have potential applications for interconnected technological networks where communication delays are inevitably present.
基金supported by the State Key Development Program for Basic Research of China (Grant No 2006CB705500)the National Natural Science Foundation of China (Grant Nos 70631001,70501004 and 70701004)Program for New Century Excellent Talents in University (Grant No CET-07-0057)
文摘This paper modifies the weighted probabilistic cellular automaton model （Li X L, Kuang H, Song T, et al 2008 Chin. Phys. B 17 2366） which considered a diversity of traffic behaviors under real traffic situations induced by various driving characters and habits. In the new model, the effects of the velocity at the last time step and drivers＇ desire for acceleration are taken into account. The fundamental diagram, spatial-temporal diagram, and the time series of one-minute data are analyzed. The results show that this model reproduces synchronized flow. Finally, it simulates the on-ramp system with the proposed model. Some characteristics including the phase diagram are studied.
文摘目的探讨早产儿在相同呼气末正压(PEEP)水平下经鼻持续呼吸道正压(N-CPAP)模式和同步间歇正压通气(SIPPV)模式对心功能的影响。方法选择本院新生儿重症监护病房2009年3月-2011年5月收治的80例早产儿进行配对分析。其中N-CPAP治疗的20例急性呼吸窘迫综合征(RDS)患儿和SIPPV治疗的20例RDS患儿作为病例组(共40例),另外40例同期住院的一般疾病患儿按胎龄和日龄与病例组配成40对,应用彩色多普勒超声心动图检测所有患儿心脏泵血功能指标及各瓣口流速指标,比较2种通气模式对早产儿心功能指标的差异及2种不同通气方式下相同PEEP水平对早产儿心功能的影响。结果 N-CPAP组患儿肺动脉瓣口峰值流速,主动脉瓣口峰值流速,二、三尖瓣E/A值,射血分数,心排出量的均值均低于其配对组患儿,但差异均无统计学意义(Pa>0.05);SIPPV组患儿以上指标均值亦低于其配对组,其中肺动脉瓣口峰值流速,二、三尖瓣E/A值差异均有统计学意义(Pa<0.05);N-CPAP组与SIPPV组比较,SIPPV组各项心功能指标均值均低于N-CPAP组,其中对于三尖瓣E/A值的影响更明显,2组比较差异有统计学意义(0.71±0.05 vs 1.85±0.64,P<0.05)。结论 N-CPAP对早产儿心功能的影响不明显;SIPPV主要影响全心舒张功能、肺动脉及主动脉瓣峰值流速;相同PEEP水平下,SIPPV与N-CPAP相比,SIPPV主要影响早产儿的三尖瓣E/A值及右心室舒张功能。
