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Concentrations and distribution of novel brominated flame retardants in the atmosphere and soil of Ny-Alesund and London Island,Svalbard,Arctic

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Journal of Environmental Sciences 2020年第11期32卷 180-185页

作者： Yanfen Hao wenying meng Yingming Li Xu Han Huili Lu Pu Wang Ruiqiang Yang Qinghua Zhang Guibin Jiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Shenzhen Center for Disease Control and Prevention Shenzhen 518055China

Novel brominated flame retardants(NBFRs)were investigated in Arctic air and soil samples collected from Ny-?lesund and London Island,Svalbard,during Chinese scientific research expeditions to the Arctic during 2014–*** concentrations of 9 NBFRs in the Arctic air and soil were 4.9–8.7 pg/m3(average 6.8 pg/m3)and 101–201 pg/g dw(average 150 pg/g dw),*** atmospheric concentration of hexabromobenzene(HBB)was significantly correlated with that of pentabromotoluene(PBT)and pentabromobenzene(PBBz),suggesting similar source and environmental fate in the Arctic *** significant spatial difference was observed among the different sampling sites,both for air and soil samples,indicating that the effects of the scientific research stations on the occurrence of NBFRs in the Arctic were *** fugacities from soil to air of pentabromoethylbenzene(PBEB),2,3-dibromopropyl 2,4,6-tribromophenyl ether(DPTE),and decabromodiphenylethane 1,2-bis(pentabromophenyl)ethane(DBDPE)were lower than the equilibrium value,indicating a nonequilibrium state of these compounds between air and soil,the dominant impact of deposition and the net transport from air to *** correlation analysis between the measured and predicted soil-atmosphere coefficients based on the absorption model showed that the impact of the soil organic matter on the distribution of NBFRs in the Arctic region was *** the best of our knowledge,this work is one of the limited reports on atmospheric NBFRs in the Arctic and the first study to investigate the occurrence and fate of NBFRs in the Arctic soil.

关键词： Novel brominated flame retardants Arctic Soil Air Soil-atmosphere partitioning

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Asymptotics of the Density-dependent Incompressible Navier-Stokes Flows in Exterior Domains

Asymptotics of the Density-dependent Incompressible Navier-S...

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第十一届全国流体力学学术会议

作者： Xiaoli Li wenying meng Department of Mathematics School of ScienceBUPT

In this paper,we investigate the existence and uniqueness of time periodic solution to the density-dependent incompressible Navier-Stokes equations in exterior ***,we study the asymptotic stability of the periodic solution that is given by the same Landau *** we all know,the celebrated results by many mathematicians devoted to the constant density case are ***,an actual fluid is almost impossible homogeneous and *** expect to find an approach to study the solvability of Navier-Stokes equations with variable ***,we employ some technical methods and hypothesis to overcome the difficulties by variable *** theorems in this article can be regarded as an improvement extension by the work in ***,*** and ***-Peng(Communications in Partial Differential Equations,Volume 37,2012-Issue 10).

关键词： Navier-Stokes flows exterior domain existence and uniqueness asymptotic stability

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AI-Enhanced Secure Data Aggregation for Smart Grids with Privacy Preservation

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Computers, Materials & Continua 2025年第1期82卷 799-816页

作者： Congcong Wang Chen Wang wenying Zheng Wei Gu School of Software Nanjing University of Information Science and TechnologyNanjing210044China School of Information Science and Engineering Zhejiang Sci-Tech UniversityHangzhou310018China State Key Laboratory of Public Big Data Guizhou UniversityGuiyang550025China School of Computer Science and Technology(School of Artificial Intelligence) Zhejiang Sci-Tech UniversityHangzhou310018China School of Computer Science(School of Cyber Science and Engineering) Nanjing University of Information Science and TechnologyNanjing210044China

As smart grid technology rapidly advances,the vast amount of user data collected by smart meter presents significant challenges in data security and privacy *** research emphasizes data security and user privacy concerns within smart ***,existing methods struggle with efficiency and security when processing large-scale *** efficient data processing with stringent privacy protection during data aggregation in smart grids remains an urgent *** paper proposes an AI-based multi-type data aggregation method designed to enhance aggregation efficiency and security by standardizing and normalizing various data *** approach optimizes data preprocessing,integrates Long Short-Term Memory(LSTM)networks for handling time-series data,and employs homomorphic encryption to safeguard user *** also explores the application of Boneh Lynn Shacham(BLS)signatures for user *** proposed scheme’s efficiency,security,and privacy protection capabilities are validated through rigorous security proofs and experimental analysis.

关键词： Smart grid data security privacy protection artificial intelligence data aggregation

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一种PIN二极管参数的提取方法与应用

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电子元件与材料 2019年第4期38卷 32-36页

作者：孟文营穆卓王身云南京信息工程大学应用电磁研究中心江苏南京210044

采用夹具测量微波元件参数时会引入夹具误差。本文设计了一款适用于SMP-1320-079LF型号PIN二极管散射参数测量的夹具和对应的TRL校准套件,并利用TRL校准方法测试了该型号PIN二极管在UHF频段的实际散射参数。然后,建立了PIN二极管在两种... 详细信息

采用夹具测量微波元件参数时会引入夹具误差。本文设计了一款适用于SMP-1320-079LF型号PIN二极管散射参数测量的夹具和对应的TRL校准套件,并利用TRL校准方法测试了该型号PIN二极管在UHF频段的实际散射参数。然后,建立了PIN二极管在两种工作状态下的等效电路模型,并根据测试参数,提取了等效电路参数。基于UHF-RFID系统应用需求,将PIN二极管应用于三端口开关馈电网络的设计,其工作频段为900～950 MHz。结果表明,改变PIN二极管的输入输出阻抗,三端口馈电网络均具有较好的开关特性,仿真与实测结果吻合。

关键词： TRL 校准件 PIN 二极管可重构三端口网络

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妊娠晚期孕妇感染B族链球菌对母婴结局的影响

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中国医师杂志 2020年第5期22卷 718-722页

作者：韩松筠孟文颖李小庆北京市通州区妇幼保健院妇产科 101100

目的对比分析孕晚期B族链球菌(GBS)感染和未感染孕妇临床资料,分析GBS感染孕妇正规治疗和未完成正规治疗的母婴结局情况。方法选取2018年7月至2019年6月在本院产科门诊进行例行产检的妊娠晚期孕妇,对其进行问卷调查和GBS采样。根据GBS... 详细信息

目的对比分析孕晚期B族链球菌(GBS)感染和未感染孕妇临床资料,分析GBS感染孕妇正规治疗和未完成正规治疗的母婴结局情况。方法选取2018年7月至2019年6月在本院产科门诊进行例行产检的妊娠晚期孕妇,对其进行问卷调查和GBS采样。根据GBS检测结果分为GBS感染组与无GBS感染组。根据孕妇接受治疗的情况,进一步将GBS感染组分为完成正规治疗组和未完成正规治疗组。对所有入选的研究对象进行追踪随访,观察和记录产妇及新生儿结局情况。结果本次研究共1127例孕妇完成了GBS采样检测和随访,年龄(26.5±4.8)岁,孕周(36.6±0.9)周。142例孕妇感染了GBS,感染率为12.6%,其中104例(73.2%)在分娩前完成了正规的治疗。GBS感染组孕妇产后感染发生率(4.9%vs 0.9%,P=0.001),新生儿感染发生率(2.1%vs 0.1%,P=0.003),新生儿窒息发生率(2.8%vs 0.5%,P=0.017),羊水污染发生率(4.2%vs 1.1%,P=0.013)均显著高于无GBS感染组。GBS感染患者未完成正规治疗组产后感染的发生率(13.2%vs 1.9%,P=0.021),羊水污染的发生率(15.8%vs 0,P<0.001)均显著高于正规治疗组产妇。结论妊娠晚期GBS感染对母婴产生不良的后果,GBS感染若不采取规范的治疗措施,母婴结局会更差,因此有必要对妊娠晚期孕妇开展B族链球菌筛查,并及早给以规范化治疗。

关键词：妊娠末期 B族链球菌感染妊娠结局

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远程胎心监护、血清UA、CRP水平与妊娠期高血压孕妇产前疾病严重程度及新生儿结局的关系

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中国计划生育学杂志 2022年第8期30卷 1860-1863,1868页

作者：周丽孟文颖北京市通州区妇幼保健院 101100

目的:探讨妊娠期高血压孕妇远程胎心监护及血清尿酸(UA)、C反应蛋白(CRP)水平与疾病严重程度及新生儿不良结局关系。方法:选取2019年7月-2020年6月本院住院分娩的妊娠期高血压疾病孕妇180例,根据疾病严重程度将其分为妊娠期高血压组与... 详细信息

目的:探讨妊娠期高血压孕妇远程胎心监护及血清尿酸(UA)、C反应蛋白(CRP)水平与疾病严重程度及新生儿不良结局关系。方法:选取2019年7月-2020年6月本院住院分娩的妊娠期高血压疾病孕妇180例,根据疾病严重程度将其分为妊娠期高血压组与子痫前期组;根据新生儿结局分为良好结局组和不良结局组。检测孕妇血清UA、CRP水平,采用远程胎心监护仪及无应激试验(NST)对孕妇远程胎心监护;Spearman法分析妊娠期高血压疾病严重程度及新生儿不良结局与远程胎心监护、血清UA、CRP水平的相关性,logistic回归分析影响因素。结果:子痫前期组血清UA(496.23±45.27μmol/L)、CRP(10.02±1.21 mg/L)水平及远程胎心监护异常孕妇比例(31.0%)均高于妊娠期高血压组(359.34±37.62μmol/L、6.76±1.18 mg/L、12.5%),新生儿不良结局组血清UA(482.81±36.94μmol/L)、CRP(10.24±1.32 mg/L)水平及远程胎心监护异常孕妇比例(39.1%)均高于新生儿良好结局组(379.14±32.17μmol/L、6.52±1.13 mg/L、11.2%)(均P<0.05)。远程胎心监护异常、血清UA、CRP水平升高均与妊娠期高血压疾病严重程度及新生儿不良结局呈正相关(P<0.05),且均为独立危险因素(P<0.05)。结论:远程胎心监护异常及血清UA、CRP水平升高均与妊娠期高血压孕妇产前疾病加重及新生儿不良结局发生有关,提示可作为产前监测指标,以及时干预改善新生儿结局。

关键词：妊娠期高血压远程胎心监护尿酸 C反应蛋白新生儿结局

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妊娠期血清转铁蛋白、总铁结合力与妊娠期代谢综合征相关性

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中国计划生育学杂志 2020年第12期28卷 2098-2101页

作者：周丽孟文颖北京市通州区妇幼保健院 101100

目的:分析妊娠期孕妇血清转铁蛋白(TRF)、总铁结合力(TIBC)与妊娠期代谢综合征(GMS)的相关性。方法:选取2018年2月—2020年1月于本院产科定期产前检查并住院分娩的GMS患者72例(观察组),同期正常妊娠孕妇80例为对照组。收集两组孕周、孕... 详细信息

目的:分析妊娠期孕妇血清转铁蛋白(TRF)、总铁结合力(TIBC)与妊娠期代谢综合征(GMS)的相关性。方法:选取2018年2月—2020年1月于本院产科定期产前检查并住院分娩的GMS患者72例(观察组),同期正常妊娠孕妇80例为对照组。收集两组孕周、孕前体质指数、基础收缩压、基础舒张压、空腹血糖、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)等。免疫比浊法检测血清中TRF;全自动生化分析仪检测血清TIBC水平。多因素logistic回归分析发生GMS的影响因素;受试者工作特征曲线(ROC)分析TRF、TIBC对发生GMS的预测价值。结果:观察组血清TRF(411.72±51.46 mg/dl)、TIBC(92.46±10.83μmol/L)均高于对照组(278.65±36.38 mg/dl、61.58±9.72μmol/L)(P0.05),TRF、TIBC水平偏高是发生GMS的危险因素(P<0.05)。ROC分析,TRF、TIBC预测妊娠期发生GMS的曲线下面积(AUC)分别为0.839(95%CI:0.757-0.921)、0.815(95%CI:0.730-0.900)。结论:TRF、TIBC在GMS孕妇血清中水平升高,是孕妇发生GMS的危险因素,对GMS有一定预测价值,可能作为潜在的诊断妊娠期孕妇发生GMS的标志物。

关键词：妊娠期代谢综合征转铁蛋白总铁结合力预测价值

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Appropriate gestational weight gain in a multi-center Chinese population: a retrospective cohort study

Appropriate gestational weight gain in a multi-center Chines...

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中国营养学会第十五届全国营养科学大会

作者： Qidi Zhang Yumei Wei Rina Su Chen Wang Xinghui Liu wenying meng Zilian Wang Yunfeng Wang Yongqing Wang Zhenyu Cai Lixin Shang Ying Sun Huixia Yang Peking University First Hospital West China Second University Hospital Tongzhou Maternal and Child Health Hospital of Beijing First Affiliated Hospital of Sun Yat-sen University Beijing Hospital of Miyun City Peking University Third Hospital Center Hospital of aviation industry General Hospital of Beijing Military Region Navy General Hospital

To investigate appropriate gestational weight gain(GWG) ranges for the multi-center Chinese population. 34,120 pregnant women from Beijing, Guangzhou and Chengdu who had given birth during June 20, 2013 to November 30, 2014 were included in this study. GWG was calculated by subtracting pre-pregnancy weight from weight before delivery. Large for gestational age(LGA) and small for gestational age(SGA) referred to birth weight above or below the 90 th or 10 th birth weight percentile. Predicted risks of LGA and SGA were estimated by logistic regression models to evaluate appropriate GWG ranges for women in each Chinese body mass index(BMI) category. The GWG values at which the risk for LGA or SGA was 10% were defined as the margins of the appropriate GWG range. Increasing GWG was associated with increments of LGA, pregnancy-induced hypertension, neonatal jaundice and reduction of SGA. To control the incidences of both LGA and SGA below 10%, ranges that GWGs were 17.9 to 22.4 Kg, 11.7 to 14.7 Kg, and-2.3 to 0.8 Kg, respectively may be appropriate for Chinese pre-pregnancy underweight, normal weight, and overweight or obese women. For Chinese pregnant women in different pre-pregnancy BMI categories, the recommended GWG might be 17.9 to 22.4 Kg for underweight, 11.7 to 14.7 Kg for normal weight,-2.3 to 0.8 Kg for overweight or obese. Methods 34,120 pregnant women from Beijing, Guangzhou and Chengdu who had given birth during June 20, 2013 to November 30, 2014 were included in this study. According to the classification of China, maternal pre-pregnancy BMIs were classified in underweight(<18.5 Kg/m), normal weight(18.5-23.9 Kg/m), overweight(24-28 Kg/m) or obese(≥28 Kg/m). GWG was calculated by subtracting pre-pregnancy weight from weight before delivery. LGA and SGA referred to birth weight above or below the 90 th or 10 th birth weight percentile. Predicted risks of LGA and SGA were estimated by logistic regression models to evaluate appropriate GWG ranges for women in e

关键词： pregnant women weight gain China body mass index pregnancy outcomes LGA SGA

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Investigating the pharmacological basis and mechanisms of the anti-thrombotic effects of Paeoniae Radix Rubra， both pre- and post-stir-frying with rice wine

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Food Science and Human Wellness 2025年

作者： Jiaxu Zhang Jian Guan Ajiao Hou wenying Niu Haixue Kuang Liu Yang Hai Jiang Key Laboratory of Basic and Application Research of Beiyao， Heilongjiang University of Chinese Medicine， Ministry of Education

Paeoniae Radix Rubra (PRR) is a commonly used traditional Chinese medicine known for promoting blood circulation and alleviating pain. Stir-frying PRR with rice wine enhances its effectiveness in improving blood flow and resolving stasis. To explore the pharmacodynamic basis and mechanisms behind PRR's anti-thrombotic effects—both pre- and post-stir-frying—a comprehensive approach combining pharmacological research， metabolomics， and chemistry was employed. Fraction inter-cross validation experiments， pharmacological assessments， and metabolomic analyses confirm the efficacy of the fraction separation process. Wine-stir-fried PRR (WPRR) shows superior blood activation compared to PRR. PRR mainly affects the TCA cycle and sphingolipid metabolism pathways through its small molecules， enhancing coagulation and fibrinolysis systems' functionality. All the subdivided components of WPRR have anti-thrombotic effects， especially polysaccharides and oligosaccharides. WPRR improves thrombotic conditions in rat blood stasis by modulating arachidonic acid metabolism， TCA cycle， lipid status enhancement， and angiogenesis stimulation while regulating platelet adhesion and aggregation. In conclusion， compared with PRR， the main material basis for the blood-activating efficacy of WPRR has transformed from small molecule compounds to polysaccharide and oligosaccharide components. The action pathways of WPRR in exerting anti-thrombotic efficacy have increased. The polysaccharide components in WPRR might possess considerable potential for being developed into natural anti-thrombotic drugs.

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小插图大智慧——浅谈如何有效利用化学教科书中的插图

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科教导刊 2015年第8X期 108-109页

作者：蒙文英陈亚芍陕西师范大学化学与化工学院陕西西安710119

随着新课改的全面开展,初中化学教师如何合理、高效地使用教科书,更好地在自己的教学领域创新教学方式,让学生能有效率有质量地掌握知识,是每个化学教师面临的难题。文章通过分析九年级化学教科书中插图的教学功能,结合学生的认知特点,... 详细信息

随着新课改的全面开展,初中化学教师如何合理、高效地使用教科书,更好地在自己的教学领域创新教学方式,让学生能有效率有质量地掌握知识,是每个化学教师面临的难题。文章通过分析九年级化学教科书中插图的教学功能,结合学生的认知特点,对如何利用教科书插图提高九年级化学教学质量进行探讨研究。

关键词：化学插图有效教学高效复习

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