The West Antarctic Peninsula(WAP)region is one of the most productive marine ecosystems in the Southern Ocean that support the food web for phytoplankton,krill spawning or recruitment and several krill consumers at hi...The West Antarctic Peninsula(WAP)region is one of the most productive marine ecosystems in the Southern Ocean that support the food web for phytoplankton,krill spawning or recruitment and several krill consumers at higher-trophic level like penguins and Antarctic fur seals.Characterized by channels and islands,the complex topography of the WAP generates interconnected circulation patterns,strongly influencing vertical stratification,nutrient availability and distribution of marine organisms.Additionally,rapid climate change associated with major climate modes like the Southern Annular Mode(SAM)and El Niño-Southern Oscillation(ENSO)has significant effects on long-term variations of physical environments and biological production.The objective of this study is to reveal the spatial-temporal variations of phytoplankton biomass in the WAP region and the modulating physical-ecological processes.By using 9-year hydrographic and ecological data of five transects collected by the Palmer Long-Term Ecosystem Research,the horizontal and vertical distributions of several physical and ecological properties,with a particular focus on chlorophyll(Chl)concentration were explored.Regression analysis among area-averaged properties and properties at single stations was performed to reveal the relationship between the interannual variations of physical and ecological processes.The correlation results showed that Chl concentration exhibited a positive relationship with both the circumpolar deep water(CDW)intrusion and vertical stratification,but showed a negative correlation with SAM at some specific stations.However,certain processes or mechanisms may only be dominant for specific stations and not applicable to the entire region.No single physical or ecological factors have been found to significantly influence the Chl distribution throughout the WAP region,which may be attributed to the heterogeneity of sea ice conditions,geometry and hydrodynamic features as well as variations in nutrient sources.展开更多
目的评价特殊健康状态儿童疫苗接种现状。方法在上海市某儿科医院疫苗咨询门诊收集2017-2019年就诊的特殊健康状态儿童既往接种信息,开展疫苗接种评估和推荐,随访再接种情况和预防接种不良事件(Adverse event following immunization,AE...目的评价特殊健康状态儿童疫苗接种现状。方法在上海市某儿科医院疫苗咨询门诊收集2017-2019年就诊的特殊健康状态儿童既往接种信息,开展疫苗接种评估和推荐,随访再接种情况和预防接种不良事件(Adverse event following immunization,AEFI),分析疫苗接种现状、接种推荐依从性和AEFI发生率。结果共纳入9559例0-17岁特殊健康状态儿童,其中0-5岁儿童占92.9%;6种最常见疾病(神经系统疾病、早产、先天性心脏病、血液病、既往AEFI史和肛周脓肿)儿童占73.4%。在有明确接种记录的儿童中按免疫程序完成疫苗接种者占5.9%(454/7637)。在疫苗接种评估儿童中推荐按免疫程序常规接种者占85.1%(8132/9559)。在随访儿童中遵照推荐进行疫苗接种者占87.3%(804/921),AEFI发生率为1.7%(14/804),无严重AEFI发生。结论特殊健康状态儿童在门诊咨询之前疫苗接种率低,疫苗接种推荐的依从性良好,特殊健康状态儿童在原发病稳定时可安全接种疫苗。展开更多
基金supported by the National Natural Science Foundation of China(Grant nos.41941008 and 41876221)the National Key Research and Development Program of China(Grant no.2022YFC2807601).
文摘The West Antarctic Peninsula(WAP)region is one of the most productive marine ecosystems in the Southern Ocean that support the food web for phytoplankton,krill spawning or recruitment and several krill consumers at higher-trophic level like penguins and Antarctic fur seals.Characterized by channels and islands,the complex topography of the WAP generates interconnected circulation patterns,strongly influencing vertical stratification,nutrient availability and distribution of marine organisms.Additionally,rapid climate change associated with major climate modes like the Southern Annular Mode(SAM)and El Niño-Southern Oscillation(ENSO)has significant effects on long-term variations of physical environments and biological production.The objective of this study is to reveal the spatial-temporal variations of phytoplankton biomass in the WAP region and the modulating physical-ecological processes.By using 9-year hydrographic and ecological data of five transects collected by the Palmer Long-Term Ecosystem Research,the horizontal and vertical distributions of several physical and ecological properties,with a particular focus on chlorophyll(Chl)concentration were explored.Regression analysis among area-averaged properties and properties at single stations was performed to reveal the relationship between the interannual variations of physical and ecological processes.The correlation results showed that Chl concentration exhibited a positive relationship with both the circumpolar deep water(CDW)intrusion and vertical stratification,but showed a negative correlation with SAM at some specific stations.However,certain processes or mechanisms may only be dominant for specific stations and not applicable to the entire region.No single physical or ecological factors have been found to significantly influence the Chl distribution throughout the WAP region,which may be attributed to the heterogeneity of sea ice conditions,geometry and hydrodynamic features as well as variations in nutrient sources.
文摘目的评价特殊健康状态儿童疫苗接种现状。方法在上海市某儿科医院疫苗咨询门诊收集2017-2019年就诊的特殊健康状态儿童既往接种信息,开展疫苗接种评估和推荐,随访再接种情况和预防接种不良事件(Adverse event following immunization,AEFI),分析疫苗接种现状、接种推荐依从性和AEFI发生率。结果共纳入9559例0-17岁特殊健康状态儿童,其中0-5岁儿童占92.9%;6种最常见疾病(神经系统疾病、早产、先天性心脏病、血液病、既往AEFI史和肛周脓肿)儿童占73.4%。在有明确接种记录的儿童中按免疫程序完成疫苗接种者占5.9%(454/7637)。在疫苗接种评估儿童中推荐按免疫程序常规接种者占85.1%(8132/9559)。在随访儿童中遵照推荐进行疫苗接种者占87.3%(804/921),AEFI发生率为1.7%(14/804),无严重AEFI发生。结论特殊健康状态儿童在门诊咨询之前疫苗接种率低,疫苗接种推荐的依从性良好,特殊健康状态儿童在原发病稳定时可安全接种疫苗。
