The precipitates in P92 steel after long-term service in an ultra-supercritical unit were investigated by field-emission scanning electron microscopy and transmission electron microscopy and were found to mainly consi...The precipitates in P92 steel after long-term service in an ultra-supercritical unit were investigated by field-emission scanning electron microscopy and transmission electron microscopy and were found to mainly consist of M23 C6 carbides,Laves phase,and MX carbonitrides.No Z-phase was observed.M23 C6 carbides and Laves phase were found not only on prior austenite grain boundaries,martensite lath boundaries,and subgrain boundaries but also in lath interiors,where two types of MX carbonitrides—Nb-rich and V-rich particles—were also observed but the "winged" complexes were hardly found.Each kind of precipitate within the martensite laths exhibited multifarious morphologies,suggesting that a morphological change of precipitates occurred during long-term service.The M23 C6 carbides and Laves phase coarsened substantially,and the latter grew faster than the former.However,MX carbonitrides exhibited a relatively low coarsening rate.The effect of the evolution of the precipitate phases on the creep rupture strength of P92 steel was discussed.展开更多
Currently,accelerated aging tests are widely used to study the aging process of polyethylene pipelines.However,this approach can only simulate one or several main influencing factors in the natural environment,which a...Currently,accelerated aging tests are widely used to study the aging process of polyethylene pipelines.However,this approach can only simulate one or several main influencing factors in the natural environment,which are often quite different from the actual environment of the buried pipelines.In this study,five types of PE80 buried pipelines in service for 9e18 years were taken as the research object,while new PE80 pipelines were taken as the reference group.The aging process and mechanism of polyethylene buried pipelines were studied through mechanical and chemical property tests and microstructural analysis.The results showed that the pipeline exhibited cross-linking as the main aging mechanism after being in service for 0e18 years.The aging degree and law of the inner and outer surface of the pipeline were compared,and the observed mechanism of both surfaces was explained.After 18 years in service,the elongation at the break of the pipe decreased by 16.2%,and the toughness of the matrix in the main collapse area of the tensile sample was the fundamental reason responsible for changes in the mechanical properties.Finally,after 18 years in service,the oxidation induction time of the pipeline was 25.7 min,which was 28.5% higher than the national standard value.There were no potential safety hazards during continuous long-term service.The results of this paper provide reference data and theoretical guidance for the aging process study of buried polyethylene pipelines.展开更多
With the rapid development of the aging of the population, the demand of long-term care services in the elderly is growing. Because of family miniaturization, core, and currently limited social accumulation are diffic...With the rapid development of the aging of the population, the demand of long-term care services in the elderly is growing. Because of family miniaturization, core, and currently limited social accumulation are difficult to meet the demand of the elderly in long-term care.Community provides the elderly long-term care services, and provides the elderly all kinds of household helping services. They just make up for the inadequacy of the family and society.And how to make the community elderly long-term care services become more suitable for the needs of the elderly at home, provide better service for the elderly, are our current problems to be solved.展开更多
Background In patients with acute ST-segment elevation myocardial infarction(STEMI)who undergo primary percutaneous coronary intervention(PCI),approximately 10%are concomitant with a chronic total occlusion(CTO)in a n...Background In patients with acute ST-segment elevation myocardial infarction(STEMI)who undergo primary percutaneous coronary intervention(PCI),approximately 10%are concomitant with a chronic total occlusion(CTO)in a non-culprit vessel.However,the impact of staged CTO recanalization on prognosis in this cohort remains disputable.This study aimed to compare the long-term outcomes of staged CTO recanalization versus medical therapy in patients with STEMI after primary PCI.Methods Between January 2005 and December 2016,a total of 287 patients were treated with staged CTO-PCI(n=91)or medical therapy(n=196)after primary PCI in our center.The primary endpoint was major adverse cardiovascular and cerebrovascular event(MACCE),defined as a composite of all-cause death,nonfatal myocardial infarction(MI),stroke or unplanned revascularization.After propensity-score matching,77 pairs of well-balanced patients were identified.Results The mean follow-up period was 6.06 years.Overall,the incidence of the primary endpoint of MACCE was significantly lower in staged CTO-PCI group than that in medical therapy group in both overall population(22.0%vs.46.9%;hazard ratio(HR)=0.48,95%CI:0.29-0.77)and propensity-matched cohorts(22.1%vs.42.9%;HR:0.48,95%CI:0.27-0.86).In addition,staged CTO-PCI was also associated with reduced risk of the composite of cardiac death,nonfatal MI or stroke compared with medical therapy in both overall population(9.9%vs.26.5%;hazard ratio(HR)=0.39,95%CI:0.19-0.79)and propensity-matched cohorts(9.1%vs.22.1%;HR:0.40,95%CI:0.16-0.96).After correction of the possible confounders,staged CTO-PCI was independently associated with reduced risks of MACCE(adjusted HR:0.46,95%CI:0.28-0.75),the composite of cardiac death,nonfatal MI or stroke(adjusted HR:0.45,95%CI:0.22-0.94)and all-cause mortality(adjusted HR:0.32,95%CI:0.13-0.83).Moreover,the results of sensitivity analysis were almost concordant with the overall analysis.Conclusions In patients with STEMI and a concurrent CTO who undergo primary PCI,successful staged recanalization of CTO in the non-culprit vessels is associated with better clinical outcomes during long-term follow-up.展开更多
Background：Forests contribute to human wellbeing through the provision of important ecosystem services.Methods：In this study,we investigated how the perceived importance of ecosystem services may impact the overall ...Background：Forests contribute to human wellbeing through the provision of important ecosystem services.Methods：In this study,we investigated how the perceived importance of ecosystem services may impact the overall benefit provided by managed watersheds at the Hubbard Brook Experimental Forest over a 45-year period,using standardized measures of service capacity weighted by service importance weights derived from a survey of beneficiaries.Results：The capacity of watersheds to regulate water flow and quality was high in all watersheds throughout the study period,whereas cultural services such as scenic beauty declined after harvest.Impacts on greenhouse gas regulation depended on the efficiency with which harvested biomass was used.Surveys revealed that stakeholders placed high value on all ecosystem services,with regulating and cultural services seen as more important than provisioning services.When service metrics were weighted by survey responses and aggregated into a single measure,total service provision followed the same overall trend as greenhouse gas regulation.Where biomass use was less efficient in terms of greenhouse gas emissions,harvesting resulted in an overall ＂ecosystem service debt＂;where use was more efficient,this ＂ecosystem service debt＂ was reduced.Beneficiaries＇ educational backgrounds significantly affected overall assessment of service provision.Beneficiaries with college or university degrees incurred smaller ＂ecosystem service debts＂ and were less negatively affected by harvesting overall.Conclusions：This study highlights the importance of including empirical measures of beneficiary preference when attempting to quantify overall provision of ecosystem services to human beneficiaries over time.展开更多
Medium to long-term precipitation forecasting plays a pivotal role in water resource management and development of warning systems.Recently,the Copernicus Climate Change Service(C3S)database has been releasing monthly...Medium to long-term precipitation forecasting plays a pivotal role in water resource management and development of warning systems.Recently,the Copernicus Climate Change Service(C3S)database has been releasing monthly forecasts for lead times of up to three months for public use.This study evaluated the ensemble forecasts of three C3S models over the period 1993-2017 in Iran’s eight classified precipitation clusters for one-to three-month lead times.Probabilistic and non-probabilistic criteria were used for evaluation.Furthermore,the skill of selected models was analyzed in dry and wet periods in different precipitation clusters.The results indicated that the models performed best in western precipitation clusters,while in the northern humid cluster the models had negative skill scores.All models were better at forecasting upper-tercile events in dry seasons and lower-tercile events in wet seasons.Moreover,with increasing lead time,the forecast skill of the models worsened.In terms of forecasting in dry and wet years,the forecasts of the models were generally close to observations,albeit they underestimated several severe dry periods and overestimated a few wet periods.Moreover,the multi-model forecasts generated via multivariate regression of the forecasts of the three models yielded better results compared with those of individual models.In general,the ECMWF and UKMO models were found to be appropriate for one-month-ahead precipitation forecasting in most clusters of Iran.For the clusters considered in Iran and for the long-range system versions considered,the Météo France model had lower skill than the other models.展开更多
Background and Objectives: Views on living arrangement from elderly and informal caregivers are crucial to “ageing in place”. They might be related to the experience in the use of elderly care services, which remain...Background and Objectives: Views on living arrangement from elderly and informal caregivers are crucial to “ageing in place”. They might be related to the experience in the use of elderly care services, which remains inconclusive in previous literature. This study aimed to explore the association of previous experience in formal and informal long-term care services with views of both elderly and their informal caregivers on living arrangement. Research Design and Methods: This study adopted a cross-sectional design. Assessment records of Minimum Data Set-Home Care for community-dwelling elderly who were eligible for subsidized long-term care services in Hong Kong from 2004 to 2014 were made available. Multivariate logistic regression was applied to examine associations between both views on elder’s living arrangement from the elderly, caregivers and their previous informal caregiver support, and experience in formal care services. Results: 82,306 dyads of elderly and informal caregivers were included in the analysis. The elderly with previous use of home and community-based services (OR = 0.84, 95% CI 0.80 - 0.88) and informal caregivers (OR = 0.78, 95% CI 0.76 - 0.81) believed that the elderly should live away from home. Temporal trends of fewer elderly and caregivers supporting the idea of living away from home were also observed. Discussion and Implications: The results highlighted the importance of informal caregiver’s support and previous utilization of formal home and community-based services. It was concluded that resources and information of community-based care have a significant association with views on living at home also proper support services and training of care for the elderly should be made available to informal caregivers to reduce their burden.展开更多
研究高架城市设计(Elevated Urban Design,EUD)作为一种应对土地利用和生态资源稀缺问题的创新解决方案,提高城市空间绿地碳储量和提升生态系统服务的价值(Ecosystem Service Value,ESV)。聚焦于EUD模式下的土地利用(Land Use and Cover...研究高架城市设计(Elevated Urban Design,EUD)作为一种应对土地利用和生态资源稀缺问题的创新解决方案,提高城市空间绿地碳储量和提升生态系统服务的价值(Ecosystem Service Value,ESV)。聚焦于EUD模式下的土地利用(Land Use and Cover Change,LUCC)及居住区绿地碳汇增量和ESV的耦合关系。以15 min生活圈作为研究尺度,采用碳排放因子法估算土地利用变化带来的绿地碳储量增量;根据生态经济学原理,分析生态系统服务价值潜力。研究结果表明:(1)以15 min生活圈为规划范围,EUD模式下的居住区绿地增量为24.4~59 hm^(2),绿地覆盖率增量为6.1%~14.75%。(2)EUD模式下居住区绿地碳排量减少6.68~16.16 t/hm^(2)。(3)居住区绿地与ESV存在正相关性,ESV增加58.73~141.83万元。(4)EUD模式以土地集约化置换利用方式促进城市生态系统目标导向下的发展完整性。展开更多
研究结合地理信息系统(Geographic Information System,GIS)空间分析能力与WebGL可视化技术,构建了基于B/S架构的动态地图服务框架。针对地形建模关键技术,系统探讨了数字高程模型的数学建模方法和多源数据融合策略。实验表明,该框架在...研究结合地理信息系统(Geographic Information System,GIS)空间分析能力与WebGL可视化技术,构建了基于B/S架构的动态地图服务框架。针对地形建模关键技术,系统探讨了数字高程模型的数学建模方法和多源数据融合策略。实验表明,该框架在保持数据传输安全性的前提下,单场景万级要素渲染帧率稳定在60 FPS,多用户并发响应时间低于200 ms。研究不仅验证了浏览器端图形加速技术的工程可行性,更为动态地图服务的多尺度表达与时空数据分析提供了可扩展的技术架构,对智慧城市、应急指挥等实时GIS应用具有实践价值。展开更多
In this work, in order to improve spatial recognition abilities for the long-term operation tasks of the assistant robot for the elderly, a novel approach of semantic region estimation is proposed. We define a novel g...In this work, in order to improve spatial recognition abilities for the long-term operation tasks of the assistant robot for the elderly, a novel approach of semantic region estimation is proposed. We define a novel graphbased semantic region descriptions, which are estimated in a dynamically fashion. We propose a two-level update algorithm, namely, Symbols update level and Regions update level. The algorithm firstly adopts particle filter to update weights of the symbols, and then use the Viterbi algorithm to estimate the region the robot stays in based on those weights, optimally. Experimental results demonstrate that our proposed approach can solve problems of the long-term operation and kidnapped robot problem.展开更多
We present a case of symptomatic perihepatic adhesions,which developed after a pregnancy complicated by hemolysis,elevated liver enzymes and low platelet(HELLP)syndrome,in which a subcapsular liver hematoma occurred.O...We present a case of symptomatic perihepatic adhesions,which developed after a pregnancy complicated by hemolysis,elevated liver enzymes and low platelet(HELLP)syndrome,in which a subcapsular liver hematoma occurred.Our patient presented with complaints of persistent,severe right-sided upper abdominal pain.The complaints developed gradually,one year after a pregnancy that had been complicated by HELLP syndrome with a subcapsular liver hematoma.The hematoma had resolved spontaneously.An upperabdominal magnetic resonance imaging revealed a density between liver and diaphragm at the site of the former subcapsular hematoma,suspect of perihepatic adhesions.The presence of perihepatic adhesions was confirmed during a laparoscopy and treated by adhesiolysis in the same session.The adhesions may have developed in response to the degradation process of the subcapsular liver hematoma during conservative treatment.This case of perihepatic adhesions may therefor be the first presentation of a long term sequel of subcapsular liver hematoma in HELLP syndrome.展开更多
文摘The precipitates in P92 steel after long-term service in an ultra-supercritical unit were investigated by field-emission scanning electron microscopy and transmission electron microscopy and were found to mainly consist of M23 C6 carbides,Laves phase,and MX carbonitrides.No Z-phase was observed.M23 C6 carbides and Laves phase were found not only on prior austenite grain boundaries,martensite lath boundaries,and subgrain boundaries but also in lath interiors,where two types of MX carbonitrides—Nb-rich and V-rich particles—were also observed but the "winged" complexes were hardly found.Each kind of precipitate within the martensite laths exhibited multifarious morphologies,suggesting that a morphological change of precipitates occurred during long-term service.The M23 C6 carbides and Laves phase coarsened substantially,and the latter grew faster than the former.However,MX carbonitrides exhibited a relatively low coarsening rate.The effect of the evolution of the precipitate phases on the creep rupture strength of P92 steel was discussed.
基金Special technical support program of the State Administration of Market Supervision(2021YJ021)Science and technology program of the State Administration of Market Supervision(2021MK118,2021MK119).
文摘Currently,accelerated aging tests are widely used to study the aging process of polyethylene pipelines.However,this approach can only simulate one or several main influencing factors in the natural environment,which are often quite different from the actual environment of the buried pipelines.In this study,five types of PE80 buried pipelines in service for 9e18 years were taken as the research object,while new PE80 pipelines were taken as the reference group.The aging process and mechanism of polyethylene buried pipelines were studied through mechanical and chemical property tests and microstructural analysis.The results showed that the pipeline exhibited cross-linking as the main aging mechanism after being in service for 0e18 years.The aging degree and law of the inner and outer surface of the pipeline were compared,and the observed mechanism of both surfaces was explained.After 18 years in service,the elongation at the break of the pipe decreased by 16.2%,and the toughness of the matrix in the main collapse area of the tensile sample was the fundamental reason responsible for changes in the mechanical properties.Finally,after 18 years in service,the oxidation induction time of the pipeline was 25.7 min,which was 28.5% higher than the national standard value.There were no potential safety hazards during continuous long-term service.The results of this paper provide reference data and theoretical guidance for the aging process study of buried polyethylene pipelines.
文摘With the rapid development of the aging of the population, the demand of long-term care services in the elderly is growing. Because of family miniaturization, core, and currently limited social accumulation are difficult to meet the demand of the elderly in long-term care.Community provides the elderly long-term care services, and provides the elderly all kinds of household helping services. They just make up for the inadequacy of the family and society.And how to make the community elderly long-term care services become more suitable for the needs of the elderly at home, provide better service for the elderly, are our current problems to be solved.
基金funded by the Ministry of Science and Technology of the People’s Republic of China,State Science and Technology Support Program (No.2011BAI11B05)Beijing Lab for Cardiovascular Precision Medicine, Beijing, China (PXM2019_014226_000023)
文摘Background In patients with acute ST-segment elevation myocardial infarction(STEMI)who undergo primary percutaneous coronary intervention(PCI),approximately 10%are concomitant with a chronic total occlusion(CTO)in a non-culprit vessel.However,the impact of staged CTO recanalization on prognosis in this cohort remains disputable.This study aimed to compare the long-term outcomes of staged CTO recanalization versus medical therapy in patients with STEMI after primary PCI.Methods Between January 2005 and December 2016,a total of 287 patients were treated with staged CTO-PCI(n=91)or medical therapy(n=196)after primary PCI in our center.The primary endpoint was major adverse cardiovascular and cerebrovascular event(MACCE),defined as a composite of all-cause death,nonfatal myocardial infarction(MI),stroke or unplanned revascularization.After propensity-score matching,77 pairs of well-balanced patients were identified.Results The mean follow-up period was 6.06 years.Overall,the incidence of the primary endpoint of MACCE was significantly lower in staged CTO-PCI group than that in medical therapy group in both overall population(22.0%vs.46.9%;hazard ratio(HR)=0.48,95%CI:0.29-0.77)and propensity-matched cohorts(22.1%vs.42.9%;HR:0.48,95%CI:0.27-0.86).In addition,staged CTO-PCI was also associated with reduced risk of the composite of cardiac death,nonfatal MI or stroke compared with medical therapy in both overall population(9.9%vs.26.5%;hazard ratio(HR)=0.39,95%CI:0.19-0.79)and propensity-matched cohorts(9.1%vs.22.1%;HR:0.40,95%CI:0.16-0.96).After correction of the possible confounders,staged CTO-PCI was independently associated with reduced risks of MACCE(adjusted HR:0.46,95%CI:0.28-0.75),the composite of cardiac death,nonfatal MI or stroke(adjusted HR:0.45,95%CI:0.22-0.94)and all-cause mortality(adjusted HR:0.32,95%CI:0.13-0.83).Moreover,the results of sensitivity analysis were almost concordant with the overall analysis.Conclusions In patients with STEMI and a concurrent CTO who undergo primary PCI,successful staged recanalization of CTO in the non-culprit vessels is associated with better clinical outcomes during long-term follow-up.
基金support from the USDA Forest Service's Northeastern States Research Cooperative(NSRC)in collaboration with the Hubbard Brook Research Foundationthe Cary Institute of Ecosystem Studies
文摘Background：Forests contribute to human wellbeing through the provision of important ecosystem services.Methods：In this study,we investigated how the perceived importance of ecosystem services may impact the overall benefit provided by managed watersheds at the Hubbard Brook Experimental Forest over a 45-year period,using standardized measures of service capacity weighted by service importance weights derived from a survey of beneficiaries.Results：The capacity of watersheds to regulate water flow and quality was high in all watersheds throughout the study period,whereas cultural services such as scenic beauty declined after harvest.Impacts on greenhouse gas regulation depended on the efficiency with which harvested biomass was used.Surveys revealed that stakeholders placed high value on all ecosystem services,with regulating and cultural services seen as more important than provisioning services.When service metrics were weighted by survey responses and aggregated into a single measure,total service provision followed the same overall trend as greenhouse gas regulation.Where biomass use was less efficient in terms of greenhouse gas emissions,harvesting resulted in an overall ＂ecosystem service debt＂;where use was more efficient,this ＂ecosystem service debt＂ was reduced.Beneficiaries＇ educational backgrounds significantly affected overall assessment of service provision.Beneficiaries with college or university degrees incurred smaller ＂ecosystem service debts＂ and were less negatively affected by harvesting overall.Conclusions：This study highlights the importance of including empirical measures of beneficiary preference when attempting to quantify overall provision of ecosystem services to human beneficiaries over time.
文摘Medium to long-term precipitation forecasting plays a pivotal role in water resource management and development of warning systems.Recently,the Copernicus Climate Change Service(C3S)database has been releasing monthly forecasts for lead times of up to three months for public use.This study evaluated the ensemble forecasts of three C3S models over the period 1993-2017 in Iran’s eight classified precipitation clusters for one-to three-month lead times.Probabilistic and non-probabilistic criteria were used for evaluation.Furthermore,the skill of selected models was analyzed in dry and wet periods in different precipitation clusters.The results indicated that the models performed best in western precipitation clusters,while in the northern humid cluster the models had negative skill scores.All models were better at forecasting upper-tercile events in dry seasons and lower-tercile events in wet seasons.Moreover,with increasing lead time,the forecast skill of the models worsened.In terms of forecasting in dry and wet years,the forecasts of the models were generally close to observations,albeit they underestimated several severe dry periods and overestimated a few wet periods.Moreover,the multi-model forecasts generated via multivariate regression of the forecasts of the three models yielded better results compared with those of individual models.In general,the ECMWF and UKMO models were found to be appropriate for one-month-ahead precipitation forecasting in most clusters of Iran.For the clusters considered in Iran and for the long-range system versions considered,the Météo France model had lower skill than the other models.
文摘Background and Objectives: Views on living arrangement from elderly and informal caregivers are crucial to “ageing in place”. They might be related to the experience in the use of elderly care services, which remains inconclusive in previous literature. This study aimed to explore the association of previous experience in formal and informal long-term care services with views of both elderly and their informal caregivers on living arrangement. Research Design and Methods: This study adopted a cross-sectional design. Assessment records of Minimum Data Set-Home Care for community-dwelling elderly who were eligible for subsidized long-term care services in Hong Kong from 2004 to 2014 were made available. Multivariate logistic regression was applied to examine associations between both views on elder’s living arrangement from the elderly, caregivers and their previous informal caregiver support, and experience in formal care services. Results: 82,306 dyads of elderly and informal caregivers were included in the analysis. The elderly with previous use of home and community-based services (OR = 0.84, 95% CI 0.80 - 0.88) and informal caregivers (OR = 0.78, 95% CI 0.76 - 0.81) believed that the elderly should live away from home. Temporal trends of fewer elderly and caregivers supporting the idea of living away from home were also observed. Discussion and Implications: The results highlighted the importance of informal caregiver’s support and previous utilization of formal home and community-based services. It was concluded that resources and information of community-based care have a significant association with views on living at home also proper support services and training of care for the elderly should be made available to informal caregivers to reduce their burden.
文摘研究高架城市设计(Elevated Urban Design,EUD)作为一种应对土地利用和生态资源稀缺问题的创新解决方案,提高城市空间绿地碳储量和提升生态系统服务的价值(Ecosystem Service Value,ESV)。聚焦于EUD模式下的土地利用(Land Use and Cover Change,LUCC)及居住区绿地碳汇增量和ESV的耦合关系。以15 min生活圈作为研究尺度,采用碳排放因子法估算土地利用变化带来的绿地碳储量增量;根据生态经济学原理,分析生态系统服务价值潜力。研究结果表明:(1)以15 min生活圈为规划范围,EUD模式下的居住区绿地增量为24.4~59 hm^(2),绿地覆盖率增量为6.1%~14.75%。(2)EUD模式下居住区绿地碳排量减少6.68~16.16 t/hm^(2)。(3)居住区绿地与ESV存在正相关性,ESV增加58.73~141.83万元。(4)EUD模式以土地集约化置换利用方式促进城市生态系统目标导向下的发展完整性。
文摘研究结合地理信息系统(Geographic Information System,GIS)空间分析能力与WebGL可视化技术,构建了基于B/S架构的动态地图服务框架。针对地形建模关键技术,系统探讨了数字高程模型的数学建模方法和多源数据融合策略。实验表明,该框架在保持数据传输安全性的前提下,单场景万级要素渲染帧率稳定在60 FPS,多用户并发响应时间低于200 ms。研究不仅验证了浏览器端图形加速技术的工程可行性,更为动态地图服务的多尺度表达与时空数据分析提供了可扩展的技术架构,对智慧城市、应急指挥等实时GIS应用具有实践价值。
基金supported by the National Natural Science Foundation of China (61305103 and 61473103)the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (51521003 )+1 种基金the Natural Science Foundation of Heilongjiang Province, China (QC2014C072 and F2015010)SelfPlanned Task (SKLRS201609B and SKLRS201411B) of State Key Laboratory of Robotics and System (HIT)
文摘In this work, in order to improve spatial recognition abilities for the long-term operation tasks of the assistant robot for the elderly, a novel approach of semantic region estimation is proposed. We define a novel graphbased semantic region descriptions, which are estimated in a dynamically fashion. We propose a two-level update algorithm, namely, Symbols update level and Regions update level. The algorithm firstly adopts particle filter to update weights of the symbols, and then use the Viterbi algorithm to estimate the region the robot stays in based on those weights, optimally. Experimental results demonstrate that our proposed approach can solve problems of the long-term operation and kidnapped robot problem.
文摘We present a case of symptomatic perihepatic adhesions,which developed after a pregnancy complicated by hemolysis,elevated liver enzymes and low platelet(HELLP)syndrome,in which a subcapsular liver hematoma occurred.Our patient presented with complaints of persistent,severe right-sided upper abdominal pain.The complaints developed gradually,one year after a pregnancy that had been complicated by HELLP syndrome with a subcapsular liver hematoma.The hematoma had resolved spontaneously.An upperabdominal magnetic resonance imaging revealed a density between liver and diaphragm at the site of the former subcapsular hematoma,suspect of perihepatic adhesions.The presence of perihepatic adhesions was confirmed during a laparoscopy and treated by adhesiolysis in the same session.The adhesions may have developed in response to the degradation process of the subcapsular liver hematoma during conservative treatment.This case of perihepatic adhesions may therefor be the first presentation of a long term sequel of subcapsular liver hematoma in HELLP syndrome.
