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Mechanisms of ultrafine particle formation during coal combustion in a new swirl modification device

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Journal of Iron and Steel Research International 2019年第1期26卷 11-19页

作者： jun-xiang Guo Ling-ling Zhang wen-bin Dai Li-ying qi Ru-fei Wei Da-qiang Cang School of Metallurgical and Ecological Engineering University of Science and Tech no logy BeijingBeijing 100083China School of Energy and Environment Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Solid Waste Reuse for Building Materials(SKL-SWR) Beijing Building Materials Academy of Sciences Research(BBMA)Beijing 100083China College of Energy and Environmental Engineering Hebei University of EngineeringHandan 056038HebeiChina

A new swirl combustion device was designed and enhaneed,which realized the utilization of steel slag,achieved highly efficient and clean coal combustion,and simultaneously realized a fully elemental utilization of *** distribution laws of different sized particulate matter(PM)emission and the enrichment laws of elements in particles under diverse conditions(such as various excess air coefficients and different coal ratios)were systematically *** enrichments of PM under both non-staged and fuel-staged conditions were also *** results indicated that fuel-staged combustion is more helpful in reducing PM emissions than non-staged combustion,and a suitable coal ratio is also beneficial for reducing PM *** melted liquid steel slag drop captured the fly ash produced from pulverized combustion,thus reducing PM *** alkali metal elements(K,Na,and Mg),the trace elements(As and Ti).and S have an obvious enrichment tendency in PM]and PM2.5,A different coal ratio under fuel-staged combustion has a significant influence on the enrichment of Al,Si,Ca,and Fe in PM),whereas in ***4,and PM10,the effect of different coal ratios on the enrichment of each element is slight.

关键词： Coal combustion Steel slag modification Particulate matter Elemernal enrichment Fuel-staged feed Non-staged feed Swirl modification device

Deformation of the Zhangjiazhuang high-speed railway tunnel: an analysis of causal mechanisms using geomorphological surveys and D-InSAR monitoring

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Journal of Mountain Science 2021年第7期18卷 1920-1936页

作者： MENG Xing-min qi Tian-jun ZHAO yan DIJKSTRA Tom SHI Wei LUO Yin-fei WU Yuan-zhao SU Xiao-jun ZHAO Fu-meng MA jin-hui ZHANG Yi CHEN Guan YUE Dong-xia ZHANG Mao-sheng School of Earth Sciences Lanzhou UniversityLanzhou 730000China College of Earth and Environmental Sciences MOE Key Laboratory of Western China's Environmental SystemsLanzhou UniversityLanzhou 730000China Gansu Tech Innovation Centre for Environmental Geology and Geohazard Prevention Lanzhou 730000China School of Architecture Building and Civil EngineeringLoughborough UniversityLoughboroughLE113TUUK Key Laboratory of qinghai Environmental Geological Survey Xining 810007China Xi’an Centre of China Geological Survey Xi’an 710054China

On 18 January 2016,the Zhangjiazhuang high-speed railway tunnel in Ledu,qinghai Province,China,underwent serious deformation and structural damage.A crack formed at the top of the tunnel and the concrete on the crown peeled *** a result,the tunnel could not be operated for three *** order to determine the types and spatial distribution of the landslides in the region and the surface deformation characteristics associated with the tunnel deformation,we used field geological and geomorphological surveys,unmanned aerial vehicle image interpretation and differential interferometric synthetic aperture radar(D-In SAR) surface deformation *** ancient and old landslides were identified and analysed in the study *** deformation monitoring and investigation of buildings in several villages on the slope front showed that the tunnel deformation was not related to deep-seated gravitational slope ***,surface deformation monitoring revealed an active NEE–SWW fault in the area intersecting the tunnel at the location of the tunnel *** constitutes a plausible mechanism for the deformation of the *** study highlights the need for detailed engineering geomorphological investigations to better predict the occurrence of tunnel deformation events in the future.

关键词： Gaojiawan Landslide group Zhangjiazhuang tunnel Deformation Fault activity Irrigation infiltration

新一代含氟环保气体绿色制造标准体系建设实践与效果评价分析

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中国标准化 2024年第15期 161-167页

作者：徐铮颜光清罗霞李企真李霞李杰何高瑛郭雅飞张建君浙江省化工研究院有限公司中化蓝天氟材料有限公司东阳市巍华制冷材料有限公司浙江巨化技术中心有限公司

标准化工作对于推动新一代含氟环保气体产业高质量快速发展至关重要,在标准化工作开展时,积极推进标准体系有效实施、开展标准体系评价是必不可少的。本文以新一代含氟环保气体为例,探索了新一代含氟环保气体绿色制造标准体系实施与评... 详细信息

标准化工作对于推动新一代含氟环保气体产业高质量快速发展至关重要,在标准化工作开展时,积极推进标准体系有效实施、开展标准体系评价是必不可少的。本文以新一代含氟环保气体为例,探索了新一代含氟环保气体绿色制造标准体系实施与评价的方法,以期逐步建立完整的、适用于中国含氟环保气体产业的新一代含氟环保气体绿色制造标准体系和合适的实施方案及评价方法。

关键词：新一代含氟环保气体绿色制造标准体系实施评价

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Intramural pregnancy after in vitro fertilization and embryo transfer:A case report

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World Journal of Clinical Cases 2022年第9期10卷 2871-2877页

作者： qi-jun Xie Xin Li Dan-Yu ni Hui ji Chun Zhao Xiu-Feng Ling Department of Reproductive Medicine Nanjing Maternity and Child Health Care HospitalNanjing 210004Jiangsu ProvinceChina

BACKGROUND Intramural pregnancy is a rare type of ectopic pregnancy,which is diagnosed by transvaginal ultrasound and magnetic resonance *** strategies vary depending on the site of the pregnancy,the gestational age and the desire to maintain *** incidence of intramural pregnancy in assisted reproductive technology is higher than that in natural *** SUMMARY We present a case of intramural pregnancy after in vitro fertilization and elective single embryo transfer following *** patient was completely asymptomatic and her serumβ-human chorionic gonadotropin level increased from 290 m IU/m L to 1759 m IU/m ***-dimensional transvaginal ultrasound indicated a heterogeneous echogenic mass arising from the uterine fundus which was surrounded by myometrium and a slender and extremely hypoechoic area stretching to the uterine cavity which was thought to be a fistulous ***,we considered a diagnosis of intramural pregnancy and laparoscopic surgery was conducted at 7 wk *** Early diagnosis and treatment of intramural pregnancy is significant for maintaining fertility.

关键词： Intramural pregnancy In vitro fertilization Embryo transfer Transvaginal ultrasound Laparoscopic surgery Case report

Risk stratification of hemodynamically significant patent ductus arteriosus by clinical and genetic factors

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World Journal of Pediatrics 2023年第12期19卷 1192-1202页

作者： Yu-Xi Chen Tian-Tian Xiao Hui-yao Chen Xiang Chen ya-qiong Wang qi ni Bing-Bing Wu Hui-jun Wang Yu-Lan Lu Li-Yuan Hu Yun Cao Guo-qiang Cheng Lai-Shuan Wang fei-fan Xiao Lin yang Xin-Ran Dong wen-Hao Zhou Center for Molecular Medicine of Children’s Hospital of Fudan University Institutes of Biomedical SciencesFudan University138 Yi Xue Yuan RoadShanghaiChina Department of Neonatology Children’s Hospital of Fudan UniversityNational Children’s Medical CenterShanghaiChina Center for Molecular Medicine Children’s Hospital of Fudan University399 Wanyuan RoadShanghai201102China

Background Hemodynamically significant patent ductus arteriosus(hsPDA)is associated with increased comorbidities in *** evaluation of hsPDA risk is critical to implement individualized *** aim of the study was to provide a powerful reference for the early identification of high-risk hsPDA population and early treatment *** We enrolled infants who were diagnosed with PDA and performed exome *** collapsing analyses were used to find the risk gene set(RGS)of hsPDA for model *** credibility of RGS was proven by RNA *** logistic regression was performed to establish models combining clinical and genetic *** models were evaluated by area under the receiver operating curve(AUC)and decision curve analysis(DCA).Results In this retrospective cohort study of 2199 PDA patients,549(25.0%)infants were diagnosed with *** model[all clinical characteristics selected by least absolute shrinkage and selection operator regression(all CCs)]based on six clinical variables was acquired within three days of life,including gestational age(GA),respiratory distress syndrome(RDS),the lowest platelet count,invasive mechanical ventilation,and positive inotropic and vasoactive *** has an AUC of 0.790[95%confidence interval(CI)=0.749–0.832],while the simplified model(basic clinical characteristic model)including GA and RDS has an AUC of 0.753(95%CI=0.706–0.799).There was a certain consistency between RGS and differentially expressed genes of the ductus arteriosus in *** AUC of the models was improved by RGS,and the improvement was significant(all CCs *** CCs+RGS:0.790 vs.0.817,Pnically *** Models based on clinical factors were developed to accurately stratify the risk of hsPDA in the first three days of *** features might further improve the model performance.

关键词： Exome sequencing-Hemodynamically significant patent ductus arteriosus Multivariate logistic regression Neonates Risk stratification

围手术期加速康复临床路径在单侧双通道脊柱内镜腰椎间盘切除术中的应用

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中华骨与关节外科杂志 2024年第9期17卷 823-830页

作者：倪国玉张志武孟海白成瑞白天宇金凤苏楠范子寒林吉生谢学虎邵佳申杨雍费琦首都医科大学附属北京友谊医院骨科北京100050

目的:评价加速康复外科(ERAS)临床路径在单侧双通道脊柱内镜(UBE)腰椎间盘切除术中的应用效果。方法:回顾性分析2022年8月至2024年1月首都医科大学附属北京友谊医院因腰椎间盘突出症接受UBE腰椎间盘切除术的130例患者的临床资料。其中2... 详细信息

目的:评价加速康复外科(ERAS)临床路径在单侧双通道脊柱内镜(UBE)腰椎间盘切除术中的应用效果。方法:回顾性分析2022年8月至2024年1月首都医科大学附属北京友谊医院因腰椎间盘突出症接受UBE腰椎间盘切除术的130例患者的临床资料。其中2022年8月至2023年4月收治的49例为传统组,2023年5月至2024年1月收治的81例为ERAS组,ERAS组核心要点包括4次患者宣教、疼痛管理、康复科参与指导围手术期功能锻炼、“术能”的应用、早期下地活动。统计学分析两组患者手术前后的下肢疼痛视觉模拟评分(VAS)、Oswestry功能障碍指数(ODI)、术后首次下地时间、住院时间等。结果:与传统组相比,ERAS组患者术后4 h、24 h的VAS评分更低,差异均有统计学意义(P均0.05);两组患者围手术期并发症总发生率比较,差异无统计学意义(P>0.05)。结论:在ERAS临床路径管理下,UBE治疗腰椎间盘突出症可以早期减轻术后疼痛、提前术后首次下地时间、缩短住院时间、减少阿片类药物使用情况,同时未增加围手术期并发症发生率,可以获得满意的围手术期临床疗效。

关键词：加速康复外科单侧双通道脊柱内镜微创手术腰椎间盘突出症

Health diagnosis of concrete dams using hybrid FWA with RBF-based surrogate model

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Water Science and Engineering 2019年第3期12卷 188-195页

作者： Si-qi Dou jun-jie Li fei Kang School of Hydraulic Engineering Faculty of Infrastructure Engineering Dalian University of Technology Dalian 116024 China College of Water Conservancy and Hydropower Engineering Hohai University Nanjing 210098 China

Structural health monitoring is important to ensuring the health and safety of *** inverse analysis method based on a novel hybrid fireworks algorithm (FWA) and the radial basis function (RBF) model is proposed to diagnose the health condition of concrete *** damage of concrete dams is diagnosed by identifying the elastic modulus of materials using the displacement changes at different reservoir water *** is a global optimization intelligent *** proposed hybrid algorithm combines the FWA with the pattern search algorithm, which has a high capability for local *** of benchmark functions and pseudo-experiment examples of concrete dams illustrate that the hybrid FWA improves the convergence speed and robustness of the original *** address the time consumption problem, an RBF-based surrogate model was established to replace part of the finite element method in inverse *** examples of concrete dams illustrate that the use of an RBF-based surrogate model significantly reduces the computation time of inverse analysis with little influence on identification *** presented hybrid FWA combined with the RBF network can quickly and accurately determine the elastic modulus of materials, and then determine the health status of the concrete dam.

关键词： Fireworks algorithm(FWA) Radial basis function (RBF) network Surrogate model Inverse analysis Structural health monitoring

ABNORMAL SHOOT 6 interacts with KATAniN 1 and SHADE AVOIDANCE 4 to promote cortical microtubule severing and ordering in Arabidopsis

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Journal of Integrative Plant Biology 2021年第4期63卷 646-661页

作者： Yuanfeng Li Meng Deng Haofeng Liu yan Li Yu Chen Min jia Hui Xue jingxia Shao jun Zhao yafei qi Lijun An fei Yu Xiayan Liu State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences Northwest A&F UniversityYangling 712100China Present Address:Department of Plant&Microbial Biology University of California BerkeleyCalifornia 94720USA

Plant interphase cortical microtubules(cMTs)mediate anisotropic cell expansion in response to environmental and developmental *** Arabidopsis thaliana,KATAniN 1(KTN1),the p60 catalytic subunit of the conserved MT-severing enzyme katanin,is essential for cMT ordering and anisotropic cell ***,the regulation of KTN1-mediated cMT severing and ordering remains *** this work,we report that the Arabidopsis IQ67 DOMAIN(IQD)family gene ABNORMAL SHOOT 6(ABS6)encodes a MT-associated *** of ABS6 leads to elongated cotyledons,directional pavement cell expansion,and highly ordered transverse cMT *** suppressor analysis revealed that ABS6-mediated cMT ordering is dependent on KTN1 and SHADE AVOIDANCE 4(SAV4).Live imaging of cMT dynamics showed that both ABS6 and SAV4 function as positive regulators of cMT ***,ABS6 directly interacts with KTN1 and SAV4 and promotes their recruitment to the ***,analysis of loss-of-function mutant combinations showed that ABS6,SAV4,and KTN1 work together to ensure the robust ethylene response in the apical hook of dark-grown ***,our findings establish ABS6 and SAV4 as positive regulators of cMT severing and ordering,and highlight the role of cMT dynamics in fine-tuning differential growth in plants.

关键词： ABS red ABNORMAL SHOOT 6 interacts with KATAniN 1 and SHADE AVOIDANCE 4 to promote cortical microtubule severing and ordering in Arabidopsis

Extracorporeal membrane oxygenation for coronavirus disease 2019-associated acute respiratory distress syndrome:Report of two cases and review of the literature

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World Journal of Clinical Cases 2021年第8期9卷 1953-1967页

作者： jun-Lin wen qi-Zhe Sun Zhou Cheng Xiao-Zu Liao Li-qiang Wang Yong Yuan jian-Wei Li Liu-ShengHou wen-jun Gao Wei-jia Wang Wei-yan Soh Bin-fei Li Da-qing Ma Department of Anaesthesiology Zhongshan People’s HospitalZhongshan 528403Guangdong ProvinceChina Department of Surgery and Cancer Imperial College LondonLondon SW109NHUnited Kingdom Cardiovascular Centre Zhongshan People's HospitalZhongshan 528403Guangdong ProvinceChina Department of Intensive Medicine Zhongshan People's HospitalZhongshan 528403Guangdong ProvinceChina Department of Hepatology The Second People’s Hospital of ZhongshanZhongshan 528447Guangdong ProvinceChina Laboratory Diagnosis Centre Zhongshan People's HospitalZhongshan 528403Guangdong ProvinceChina Faculty of Medicine Ewcastle University Medicine MalaysiaJohor 79200Malaysia

BACKGROUND Coronavirus disease 2019(COVID-19),caused by severe acute respiratory syndrome coronavirus-2,is a worldwide *** COVID-19 patients develop severe acute respiratory distress syndrome and progress to respiratory *** such cases,extracorporeal membrane oxygenation(ECMO)treatment is a necessary life-saving *** SUMMARY Two special COVID-19 cases—one full-term pregnant woman and one elderly(72-year-old)man—were treated by veno-venous(VV)-ECMO in the Second People’s Hospital of Zhongshan,Zhongshan City,Guangdong Province,*** patients had developed refractory hypoxemia shortly after hospital admission,despite conventional support,and were therefore managed by *** both experienced multiple ECMO-related complications on top of the COVID-19 disease,their conditions improved *** patients were weaned successfully from the ECMO *** the time of writing of this report,the woman has recovered completely and been discharged from hospital to home;the man remains on mechanical ventilation,due to respiratory muscle weakness and suspected lung *** ECMO itself is associated with various complications,it is very important to understand and treat these complications to achieve optimal *** VV-ECMO can provide sufficient gas exchange for COVID-19 patients with acute respiratory distress ***,it is crucial to understand and treat ECMO-related complications.

关键词： SARS-CoV-2 COVID-19 Coronavirus Acute respiratory distress syndrome Extracorporeal membrane oxygenation Complications Case report