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A robust indium-organic framework with open tubular channels for efficient separation of acetylene

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Nano Research 2024年第4期17卷 3139-3146页

作者： Yong-Zhi Li Gang-Ding Wang Fan Xu qing yin Danyang Zhao Jiqiu Qi Yanwei Sui Lei Hou Yao-Yu Wang School of Materials and Physics China University of Mining and TechnologyXuzhou 221116China Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education Shaanxi Key Laboratory of Physico-Inorganic ChemistryCollege of Chemistry&Materials ScienceNorthwest UniversityXi’an 710069China

Considering the tremendous applications and purification requirement of acetylene(C_(2)H_(2)),seeking appropriate adsorbents with high capacity and selectivity is a vital task and remains an enduring ***,we designed and synthesized a robust three-dimensional(3D)indium-organic framework([(Me)_(2)NH_(2)][In(L6)_(0.5)(IPA)_(0.5)]·DMA·2H_(2)O(In-L6-IPA,DMA=dimethylammonium,IPA=isopropyl alcohol))featuring two types of one-dimensional(1D)tubular *** activated In-L6-IPA displayed high loading for C_(2)H_(2)(104.4 cm^(3)·g^(-1),the second highest value among all reported indium-based metal-organic frameworks(MOFs))and simultaneously selective adsorption for C_(2)H_(2) over CO_(2),C_(2)H_(6),and ethylene(C_(2)H_(4))at 298 K under 100 *** modelling revealed that the porous wall of In-L6-IPA provides more and stronger multiple interactions for C_(2)H_(2) than CO_(2),C_(2)H_(6),and C_(2)H_(4) containing C–H···π,C–H···O,and O···π*** experiments validated the actual separation ability for various ratios of binary C_(2)H_(2)/C_(2)H_(4) and C_(2)H_(2)/CO_(2) mixtures as well as equimolar ternary C_(2)H_(2)/C_(2)H_(4)/CO_(2) and C_(2)H_(2)/C_(2)H_(4)/C_(2)H_(6) mixtures with excellent reusability.

关键词： indium-organic framework crystal structure gas adsorption acetylene(C_(2)H_(2))separation

Delivery room resuscitation intensity and associated neonatal outcomes of 24^(+0)-31^(+6) weeks'preterm infants in China:a retrospective cross-sectional study

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World Journal of Pediatrics 2024年第1期20卷 64-72页

作者： Si-Lu Wang Chun Chen Xin-Yue Gu Zhao-qing yin Le Su Si-Yuan Jiang Yun Cao Li-Zhong Du Jian-Hua Sun Jiang-Qin Liu Chuan-Zhong Yang Department of Neonatology Shanghai Key Laboratory of Maternal Fetal MedicineShanghai Institute of Maternal-Fetal Medicine and Gynecologic OncologyShanghai First Maternity and Infant HospitalSchool of MedicineTongji UniversityNo.2699Gaoke Western RoadPudong DistrictShanghai 201204China Department of Neonatology Affiliated Shenzhen Maternity and Child Healthcare HospitalSouthern Medical UniversityNo.2004Hongli RoadFutian DistrictShenzhen 518028China NHC Key Laboratory of Neonatal Diseases Fudan UniversityChildren's Hospital of Fudan UniversityShanghaiChina Department of Neonatology People's Hospital of DehongKunming Medical UniversityDehongChina Department of Neonatology Children's Hospital of Fudan UniversityShanghaiChina Department of Neonatology Children's HospitalZhejiang University School of MedicineHangzhouChina Department of Neonatology Shanghai Children's Medical CenterSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina

Background The aim of this study was to review current delivery room(DR)resuscitation intensity in Chinese tertiary neonatal intensive care units and to investigate the association between DR resuscitation intensity and short-term outcomes in preterm infants born at 24+0_31+6 weeks gestation age(GA).Methods This was a retrospective cross-sectional *** source population was infants born at 24+0_31+6 weeks'GA who were enrolled in the Chinese Neonatal Network 2019 *** infants were categorized into five groups:(1)regular care;(2)oxygen supplementation and/or continuous positive airway pressure(O2/CPAP);(3)mask ventilation;(4)endotracheal intubation;and(5)cardiopulmonary resuscitation(CPR).The association between DR resuscitation and shortterm outcomes was evaluated by inverse propensity score-weighted logistic *** Of 7939 infants included in this cohort,2419(30.5%)received regular care,1994(25.1%)received O,/CPAP,1436(18.1%)received mask ventilation,1769(22.3%)received endotracheal intubation,and 321(4.0%)received CPR in the *** maternal age and maternal hypertension correlated with a higher need for resuscitation,and antenatal steroid use tended to be associated with a lower need for resuscitation(P<0.001).Severe brain impairment increased significantly with increasing amounts of resuscitation in DR after adjusting for perinatal *** strategies vary widely between centers,with over 50%of preterm infants in eight centers requiring higher intensity *** Increased intensity of DR interventions was associated with increased mortality and morbidities in very preterm infants in *** is wide variation in resuscitative approaches across delivery centers,and ongoing quality improvement to standardize resuscitation practices is needed.

关键词： Cardiopulmonary resuscitation Delivery room Endotracheal intubation Neonatal resuscitation Preterm

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癫痫的自身免疫性病因研究进展概述

中华神经科杂志 2024年第5期57卷 511-518页

作者：戴雨薇尹晴杨利中南大学湘雅二医院神经内科长沙410011

针对“自身免疫性癫痫”概念在使用上出现的争议,国际抗癫痫联盟提出了“继发于自身免疫性脑炎的急性症状性痫性发作(ASSAE)”和“自身免疫性脑炎相关癫痫(AEAE)”,这两者在主要致病性抗体、病理学改变、治疗方案、预后上都有很大的差... 详细信息

针对“自身免疫性癫痫”概念在使用上出现的争议,国际抗癫痫联盟提出了“继发于自身免疫性脑炎的急性症状性痫性发作(ASSAE)”和“自身免疫性脑炎相关癫痫(AEAE)”,这两者在主要致病性抗体、病理学改变、治疗方案、预后上都有很大的差异。文中拟从定义、流行病学、病因、临床表现、诊断和治疗方面对这2个新概念进行全面解读,以期解决临床上对于ASSAE和AEAE的诊疗过程中存在的问题,加深神经科医师对于癫痫的自身免疫性病因的了解。

关键词：神经系统自身免疫疾病癫痫继发于自身免疫性脑炎的急性症状性痫性发作自身免疫性脑炎相关癫痫

Brain development in newborns and infants after ECMO

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World Journal of Pediatrics 2024年第6期20卷 556-568页

作者： Kai Yan Lu-Kun Tang Fei-Fan Xiao Peng Zhang Guo-Qiang Cheng Lai-Shuan Wang Chun-Mei Lu Meng-Meng Ge Li-Yuan Hu Yuan-Feng Zhou Tian-Tian Xiao Yan Xu Zhao-qing yin Gang-Feng Yan Guo-Ping Lu Qi Li Wen-Hao Zhou Department of Neonatology Children Hospital of Fudan UniversityShanghai 201102China Kunming Medical University Affiliated Dehong Hospital DehongYunnanChina Graduate School Kunming Medical UniversityKunmingYunnanChina Department of Neurology Children's Hospital of Fudan UniversityShanghaiChina School of Medicine Chengdu Women's and Children's Central HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuanChina Department of Intensive Care Medicine Children's Hospital of Fudan UniversityShanghaiChina Department of Intensive Care Medicine The Sixth Medical Center of PLA General HospitalBeijingChina Key Laboratory of Neonatology National Health Care CommissionShanghaiChina

Background Extracorporeal membrane oxygenation(ECMO)not only significantly improves survival rates in severely ill neonates but also is associated with long-term neurodevelopmental *** systematically review the available literature on the neurodevelopmental outcomes of neonates and infants who have undergone ECMO treatment,with a focus on motor deficits,cognitive impairments,sensory impairments,and developmental *** review aims to understand the incidence,prevalence,and risk factors for these problems and to explore current nursing care and management *** sources A comprehensive literature search was performed across PubMed,EMBASE,and Web of Science using a wide array of keywords and phrases pertaining to ECMO,neonates,infants,and various facets of *** initial screening involved reviewing titles and abstracts to exclude irrelevant articles,followed by a full-text assessment of potentially relevant *** quality of each study was evaluated based on its research methodology and statistical ***,citation searches were conducted to identify potentially overlooked *** the focus was primarily on neonatal ECMO,studies involving children and adults were also included due to the limited availability of neonate-specific *** About 50%of neonates post-ECMO treatment exhibit varying degrees of brain injury,particularly in the frontal and temporoparietal white matter regions,often accompanied by neurological *** occur in 18%–23%of neonates within the first 24 hours,and bleeding events occur in 27%–60%of ECMO procedures,with up to 33%potentially experiencing ischemic *** some studies suggest that ECMO may negatively impact hearing and visual development,other studies have found no significant differences;hence,the influence of ECMO remains *** terms of cognitive,language,and intellectual development,ECMO treatment may be associated with potential deve

关键词： Brain development Extracorporeal membrane oxygenation Infants Neonates Neurological outcomes

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汽车电控发动机系统故障诊断与维修技术

内燃机与配件 2024年第6期 85-87页

作者：尹青广东省南方技师学院广东韶关512200

电子技术在汽车发动机中应用极为广泛,电控发动机系统已经成为主流趋势,但汽车电控发动机系统内部的电子元件数量较多、类型多元,一旦出现故障,就有可能会造成不良的后果。首先,概述了汽车电控发动机,其次,分析了汽车电控发动机系统故... 详细信息

电子技术在汽车发动机中应用极为广泛,电控发动机系统已经成为主流趋势,但汽车电控发动机系统内部的电子元件数量较多、类型多元,一旦出现故障,就有可能会造成不良的后果。首先,概述了汽车电控发动机,其次,分析了汽车电控发动机系统故障特点及常见类型,再次,剖析了汽车电控发动机系统的主要故障诊断方式,同时,还深入探讨了汽车电控发动机系统诊断维修工作优化路径,最后,展望了汽车电控发动机系统故障诊断与维修技术的发展趋势。

关键词：汽车电控发动机故障诊断维修技术

习近平总书记关于伟大斗争的重要论述:思想渊源、基本内涵和时代价值

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西华师范大学学报（哲学社会科学版） 2024年第3期 51-58页

作者：尹清龙四川大学马克思主义学院四川成都610207

马克思主义经典作家的斗争理论、中华优秀传统文化中的斗争思想、中国共产党百年来的斗争实践揭示了世情、国情、党情改变斗争形势的规律,这也是习近平总书记关于伟大斗争重要论述的思想渊源。习近平总书记关于伟大斗争重要论述阐明了... 详细信息

马克思主义经典作家的斗争理论、中华优秀传统文化中的斗争思想、中国共产党百年来的斗争实践揭示了世情、国情、党情改变斗争形势的规律,这也是习近平总书记关于伟大斗争重要论述的思想渊源。习近平总书记关于伟大斗争重要论述阐明了伟大斗争的本质,概括了斗争的内容,回答了伟大斗争的目标指向,把握了伟大斗争的特征,明确了伟大斗争的实践路径。其时代价值主要体现为:实现了马克思主义斗争理论的创新发展,指出了中国共产党自我革命的实践形式,确定了全面建设社会主义现代化国家的重要原则,增强了全面推进中华民族伟大复兴的底气与自信,提出了“合作—斗争—合作”的对外交往方针。

关键词：伟大斗争内涵自我革命价值

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高原城市拉萨典型VOCs排放源成分谱特征

环境科学 2024年第4期45卷 2011-2018页

作者：郭淑政叶春翔林伟立陈熠曾立民尹晴晴刘雪莉民族地区生态环境国家民委重点实验室(中央民族大学) 北京100081 北京大学环境科学与工程学院北京100871

高海拔地区低的气压和含氧量会影响燃烧和溶剂挥发过程,进而影响挥发性有机物(VOCs)的排放特征.然而,人们对海拔3 000 m以上的燃烧源或挥发源的VOCs排放特征的认识有限.拉萨市正在经历快速的经济发展和城市化进程,VOCs排放源日趋复杂.... 详细信息

高海拔地区低的气压和含氧量会影响燃烧和溶剂挥发过程,进而影响挥发性有机物(VOCs)的排放特征.然而,人们对海拔3 000 m以上的燃烧源或挥发源的VOCs排放特征的认识有限.拉萨市正在经历快速的经济发展和城市化进程,VOCs排放源日趋复杂.采集拉萨市机动车尾气、汽油挥发、柴油挥发、液化石油气和燃香等排放源VOCs样品进行分析,研究成分谱特征,并与平原地区的相比较.发现液化石油气VOCs排放谱以丙烷和丁烷为主,与平原地区的一致;汽油挥发中1,2,4-三甲苯占比最高,而汽油车尾气中异戊烷、正丁烷和丙烷占比高,1,2,4-三甲苯占比较低,这不同于平原地区的结果;柴油挥发比汽油及汽油车排放具有更高占比的C7以上高碳化合物;柴油车排放中含氧挥发性有机物(OVOC)占比最高,而平原地区则是丙烯和C7以上烷烃占比高;燃香排放中OVOC占比最高,特征示踪物是乙腈,且有不容忽视的异戊二烯排放.从甲苯与苯的比值上看,汽油车及柴油车排放与平原地区的结果基本一致,但两地区柴油挥发和燃香排放则不同.从苯、甲苯和乙苯比例三元图上看,柴油挥发落在工业及溶剂排放区内,有别于平原地区的结果 .与其它城市一样,烯烃和芳香烃化合物也是高原城市中具有高反应活性VOCs组分,二者分别对臭氧和二次有机气溶胶的生成有重要的贡献.初步研究结果表明,高原城市地区不同VOCs源的组分特征与平原地区有所差异,需要进一步深入研究,以应对潜在的环境和健康风险.

关键词：挥发性有机物(VOCs) 源谱成分谱排放特征羟基消耗速率(L_(·OH)) 臭氧生成潜势(OFP)

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纵向牵伸工艺对聚四氟乙烯膜微孔形成的影响

合成纤维 2024年第6期53卷 19-22页

作者：陈银青上海灵氟隆膜技术有限公司上海201200

聚四氟乙烯(PTFE)膜经双向拉伸制备而成,拉伸工艺及设备对膜微孔的形成影响显著。对比分析了经不同的纵向牵伸方式制得的微孔膜的面密度、透气率及微观结构,结果显示,箱体加热、牵伸辊不加热的方式更有利于制备均匀且结构清晰、原纤化... 详细信息

聚四氟乙烯(PTFE)膜经双向拉伸制备而成,拉伸工艺及设备对膜微孔的形成影响显著。对比分析了经不同的纵向牵伸方式制得的微孔膜的面密度、透气率及微观结构,结果显示,箱体加热、牵伸辊不加热的方式更有利于制备均匀且结构清晰、原纤化程度高、孔隙丰富的PTFE微孔膜。

关键词：聚四氟乙烯微孔膜牵伸工艺箱体加热

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球磨工艺对机械合金化制备AlN涂层的影响

广州化工 2024年第9期52卷 62-64,107页

作者：陈庆艮安徽省特种设备检测院安徽合肥231100

在金属Al基板表面制备AlN涂层可结合两者优势,使得复合基板具有优异的导热性、绝缘性以及与芯片匹配的热膨胀系数,有望获得大规模应用。本文采用表面机械纳米合金化工艺在铝表面制备AlN涂层,使用光学显微镜,扫描电子显微镜等设备对系统... 详细信息

在金属Al基板表面制备AlN涂层可结合两者优势,使得复合基板具有优异的导热性、绝缘性以及与芯片匹配的热膨胀系数,有望获得大规模应用。本文采用表面机械纳米合金化工艺在铝表面制备AlN涂层,使用光学显微镜,扫描电子显微镜等设备对系统地研究了工艺参数对其结构的影响,分析了涂层形成过程及相关作用机理。同时,为了减缓Al基体与AlN涂层之间的不匹配性,还设计并制备了W-Al中间过渡层,并通过优化工艺参数对中间过渡层的结构进行了调控。

关键词：表面机械纳米合金化铝合金 AlN涂层