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Socioeconomic and Environmental Determinants to Preterm Birth in Tibetan Women： An Analysis Based on the Hierarchically Conceptual Frame

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Chinese Medical Journal 2017年第19期130卷 2307-2315页

作者： Xiao-Jing Fan Jian-Min Gao Yi-Jun Kang shao-nong dang Wei-Hua Wang Hong Yan Duo-Lao Wang Department of Epidemiology and Health Statistics School of Public Health Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China Department of Health Management and Policy School of Public Policy and Administration Xi'an Jiaotong University Xi'an Shaanxi 710049 China Shaanxi Provincial Centre for Disease Control and Prevention Xi'an Shaanxi 710054 China Department of Clinical Sciences Liverpool School of Tropical Medicine Liverpool L3 5QA UK

Background： Preterm birth is a common cause of death in newborns and may result from many determinants, but evidence for the socioeconomic and environmental determinants of preterm birth in Tibetan women of childbearing age is limited. The aim of this study was to understand the current status of preterm birth in native Tibetan women and investigate the socioeconomic and environmental determinants. Methods： Data were drawn from a cohort study which was conducted from August 2006 to August 2012 in rural Lhasa, Tibet, China. A total of 1419 Tibetan pregnant women were followed from 20 weeks＆#39; gestation until delivery; the loss to follow-up rate was 4.69%. The incidence of preterm birth was estimated to show the status of preterm births in Tibet. Logistic regression models for longitudinal data were established, and odds ratios （ORs） together with 95% confidence intervals （CIs） were used to evaluate the association between the occurrence of preterm birth and 16 selected potential determinants based on the hierarchical conceptual frame. Results： The incidence of preterm birth was 4.58% （95% CI = 3.55–5.80%）. After adjusting for health-related variables of the mothers and newborns, socioeconomic and environmental determinants associated with preterm birth included season （spring： OR = 0.28, 95%CI = 0.09–0.84; autumn： OR = 0.21, 95% CI = 0.06–0.69; and winter： OR = 0.31, 95% CI = 0.12–0.82） and calendar year of delivery （2010： OR = 5.03, 95% CI = 1.24–20.35; 2009： OR = 6.62, 95% CI = 1.75–25.10; and 2007–2008： OR = 5.93, 95% CI = 1.47–23.90）. Conclusions： The incidence of preterm birth among native Tibetan women was low and there was a decreasing trend in recent years;however, it is still essential to strengthen seasonal maternal care, extend the spacing between pregnancies, and reinforce adequate maternal nutrition.

关键词： Determinants Preterm Birth Tibet

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Ambient air pollution and adverse birth outcomes: a systematic review and meta-analysis

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2019年第3期20卷 238-263页

作者： Le-qian GUO Yu CHEN Bai-bing MI shao-nong dang Dou-dou ZHAO Rong LIU Hong-li WANG Hong YAN Department of Epidemiology and Biostatistics School of Public HealthXi'an Jiaotong University Health Science CenterXi’an 710061China Medical Records Department the First Hospital of YulinYulin 718000China

Several reviews have assessed the relationship between exposure to ambient air pollution and adverse birth outcomes during pregnancy,but the results remain *** objective of this study was to assess this correlation quantitatively and to explore sources of *** included all published case-control or cohort studies that evaluated the correlation between ambient air pollution and low birth weight(LBW),preterm birth(PTB),and small for gestational age(SGA).Analytical methods and inclusion criteria were provided on the PROSPERO website(CRD42018085816).We evaluated pooled effects and *** analyses(grouped by exposure period,study settings,study design,exposure types,data source,Newcastle-Ottawa quality score(NOS),and adjustment for smoking or meteorological factors)were also conducted and publication bias was *** risk of bias in systematic reviews(ROBIS)tool was used to evaluate the overall risk of bias in this *** studies met the inclusion *** observed pooled odds ratios(ORs)of 1.03–1.21 for LBW and 0.97–1.06 for PTB when mothers were exposed to CO,NO2,NOx,O3,PM2.5,PM10,or SO2 throughout their *** SGA,the pooled estimate was 1.02 in relation to NO2 *** analysis and sensitivity analysis decreased the heterogeneity to some extent,such as the subgroups of continuous measures(OR=0.98(0.97–0.99),I2=0.0%)and NOS>7(OR=0.98(0.97–0.99),I2=0.0%)in evaluating the association between PTB and *** review was completed with a low risk of *** concentrations of air pollution were significantly related to the higher risk of adverse birth ***,the sources of heterogeneity among studies should be further explored.

关键词： Air pollution Low birth weight Preterm birth Meta-analysis Adverse birth outcome

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Retraction Note to:Ambient air pollution and adverse birth outcomes:a systematic review and meta-analysis

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2020年第9期21卷 756-756页

作者： Le-qian GUO Yu CHEN Bai-bing MI shao-nong dang Dou-dou ZHAO Rong LIU Hong-li WANG Hong YAN Department of Epidemiology and Biostatistics School of Public HealthXi'an Jiaotong University Health Science CenterXi'an 710061China Medical Records Department the First Hospital of YulinYulin 718000China

The authors have retracted this article(Guo et al.,2019)because some data from the original literature had not been converted to appropriate units in the paper,which resulted in deviation of the meta-analysis *** example,for the forest plot used to examine associations between PMioexposure and the risk of adverse birth outcomes,the estimates from Brauer et al.(2008),Pedersen et al.(2013),Zhao et al.

关键词： estimates deviation converted

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Viscosity and structure relationship with equimolar substitution of CaO with MgO in the CaO–MgO–Al_(2)O_(3)–SiO_(2)slag melts

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 70-79页

作者： Yong Hou Shuo Zhang Jie dang Jia Guo Hanghang Zhou Xuewei Lü College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China

Currently,the Al_(2)O_(3)content in the high-alumina slag systems within blast furnaces is generally limited to 16wt%–18.5wt%,making it challenging to overcome this *** most studies that concentrated on managing the MgO/Al_(2)O_(3)ratio or basicity,this paper explored the effect of equimolar substitution of MgO for CaO on the viscosity and structure of a high-alumina CaO-MgO-Al_(2)O_(3)-SiO_(2)slag system,providing theoretical guidance and data to facilitate the application of high-alumina *** results revealed that the viscosity first decreased and then increased with higher MgO substitution,reaching a minimum at 15mol%MgO *** transform infrared spectroscopy(FTIR)results found that the depths of the troughs representing[SiO_(4)]tetrahedra,[AlO_(4)]tetrahedra,and Si-O-Al bending became progressively deeper with increased MgO *** of the Raman spectra showed that the average number of bridging oxygens per Si atom and the X_(Q^(3))/X_(Q^(2))(X_(Q^(i))is the molar fraction of Q^(i) unit,and i is the number of bridging oxygens in a[SiO_(4)]tetrahedral unit)ratio increased from 2.30 and 1.02 to 2.52 and 2.14,respectively,indicating a progressive polymerization of the silicate structure.X-ray photoelectron spectroscopy(XPS)results highlighted that non-bridging oxygen content decreased from 77.97mol% to 63.41mol% with increasing MgO concentration,whereas bridging oxygen and free oxygen contents *** analysis demonstrated a gradual increase in the polymerization degree of the tetrahedral structure with the increase in MgO ***,bond strength is another important factor affecting the slag *** occurrence of a viscosity minimum can be attributed to the complex evolution of bond strengths of non-bridging oxygens generated during depolymerization of the[SiO_(4)]and[AlO_(4)]tetrahedral structures by CaO and MgO.

关键词： aluminosilicate viscosity structure spectroscopy

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Distributed generation planning for diversified participants in demand response to promote renewable energy integration

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Journal of Modern Power Systems and Clean Energy 2019年第6期7卷 1559-1572页

作者： Can dang Xifan WANG Chengcheng shao Xiuli WANG School of Electrical Engineering Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory on Electrical Insulation and Power Equipment Xi’an Jiaotong UniversityXi’an 710049China

In modern distribution system,the distribution system operator(DSO)acts as a market facilitator and data manager as well as an energy supplier and operation *** this circumstance,the DSO should comprehensively consider the diversified participants of the modern distribution system when making investment decisions of distributed generation(DG).This paper proposes a DG planning model considering the behavior of the diversified participants,which are motivated to cooperate with distributed renewable energy resources to promote their integration,and to achieve the optimal DG investment *** optimization model takes a centralized structure but fully considers the preferences,profits and comfort levels of the aggregators and *** model is linearized into a mixed-integer linear programming(MILP)problem and is solved by *** of the case study show that when the DSO spares subsidies to the aggregators and consumers to encourage their participation in demand response(DR)programs,it earns more compared with providing no subsidies for DR *** is also demonstrated that the overall profit increases as the subsidies increase within a certain range,but decreases when the subsidies exceed this ***,the DSO needs to carefully choose the subsidization level to achieve the optimal utilization of renewable energy and demand *** optimal subsidization level is derived from the model proposed in this ***,this paper puts forward a new pattern to utilize the distributed renewable energy sources,and provides guidance in policy making and DR program implementation.

关键词： Aggregator Consumer Demand response Distributed generation Planning Renewable energy

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Hydrophilic modification of poly(aryl sulfone) membrane materials toward highly-efficient environmental remediation

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Frontiers of Chemical Science and Engineering 2022年第5期16卷 614-633页

作者： Fan Yang Junhui Huang Lijun Deng Yanqiu Zhang Guodong dang Lu shao MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemical Engineering and TechnologyState Key Laboratory of Urban Water Resource and Environment(SKLUWRE)Harbin Institute of TechnologyHarbin 150001China School of Environments Harbin Institute of TechnologyHarbin 150009China Shandong Horan Super Engineering Plastics Co. Ltd.Weihai 264200China

Poly(aryl sulfone)as a typical membrane material has been widely used due to excellent mechanical,chemical and thermal ***,the inherent hydrophobicity of poly(aryl sulfone)based membranes bears with the fouling issue during applications,which makes the membrane tending to adsorb contaminants on the surface so as to result in decreased separation performance and *** this critical review,we give a comprehensive overview on characterizations of hydrophilic membrane and diverse hydrophilic modification approaches of poly(aryl sulfone)membranes,predominantly including bulky,blending and surface modification *** discussions on the different modification methods have been provided ***,focusing on modification methods and performance of modified membranes,the related mechanisms for the performance enhancement are discussed *** last,the perspectives are provided to guide the future directions to develop novel technology to manipulate the hydrophilicity of poly(aryl sulfone)membranes toward diverse practical and multifunctional applications.

关键词： poly(aryl sulfone) membrane separations modification hydrophilicity water treatment

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Response of Artificial Grassland Carbon Stock to Management in Mountain Region of Southern Ningxia, China

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Chinese Geographical Science 2014年第4期24卷 436-443页

作者： TANG Long dang Xiaohu LIU Guobin shao Chuanke XUE Sha School of Human Settlements and Civil Engineering Xi'an Jiaotong University College of Geology and Environment Xi'an University of Science and Technology State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources

Grassland is a major carbon sink in the terrestrial ecosystem. The dynamics of grassland carbon stock profoundly influence the global carbon cycle. In the published literatures so far, however, there are limited studies on the long-term dynamics and influential factors of grassland carbon stock, including soil organic carbon. In this study, spatial-temporal substitution method was applied to explore the characteristics of Medicago sativa L. （alfalfa） grassland biomass carbon and soil organic carbon density （SOCD） in a loess hilly region with different growing years and management patterns. The results demonstrated that alfalfa was the mono-dominant community during the cutting period （viz. 0-10 year）. Community succession began after the abandonment of alfalfa grassland and then the important value of alfalfa in the community declined. The artificial alfalfa community abandoned for 30 years was replaced by the S. bungeana community. Accordingly, the biomass carbon density of the clipped alfalfa showed a significant increase over the time during 0-10 year. During 0-30 year, the SOCD from 0-100 cm of the soil layer of all 5 management patterns increased over time with a range between 5.300 ± 0.981 kg/m2 and 12.578 ± 0.863 kg/m2. The sloping croplands had the lowest SOCD at 5.300 ± 0.981 kg/m2 which was quite different from the abandoned grasslands growing for 30 years which exhibited the highest SOCD with 12.578 ± 0.863 kg/m2. The ecosystem carbon density of the grassland clipped for 2 years increased 0.1 kg/m2 compared with the sloping cropland, while that of the grassland clipped for 10 years substantially increased to 10.30 ± 1.26 kg/m2. Moreover, the ecosystem carbon density for abandoned grassland became 12.62± 0.50 kg/m2 at 30 years. The carbon density of the grassland undisturbed for l0 years was similar to that of the sloping cropland and the grassland clipped for 2 years. Different management patterns imposed great different effects on the accumulation of bio

关键词： artificial Medicago sativa L. (alfalfa) grassland clipped grassland abandoned grassland carbon sink carbon density mountain region southern Ningxia

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Dual-Branch Multi-Level Feature Aggregation Network for Pansharpening

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IEEE/CAA Journal of Automatica Sinica 2022年第11期9卷 2023-2026页

作者： Gui Cheng Zhenfeng shao Jiaming Wang Xiao Huang Chaoya dang the State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China the Department of Geosciences University of ArkansasFayettevilleAR 72701 USA

Dear Editor,In pansharpening task,the most existing deep-learning-based pansharpening methods fail to fully utilize the different level features,inevitably leading to spectral or spatial *** address this challenge,in ... 详细信息

关键词： Dual utilize branch

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影响中国西部农村婴幼儿营养状况的因素

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中华预防医学杂志 2007年第S01期41卷 108-114页

作者：党少农颜虹西安交通大学医学院公共卫生系 710061

目的了解中国西部农村影响婴幼儿营养状况的积极影响因素.方法本研究利用2001年中国西部农村基层卫生与妇幼保健横断面调查数据.采用多阶段随机抽样法获得调查对象.运用营养不良复合指标(CIAF)指标将研究儿童分为营养良好和营养不良儿... 详细信息

目的了解中国西部农村影响婴幼儿营养状况的积极影响因素.方法本研究利用2001年中国西部农村基层卫生与妇幼保健横断面调查数据.采用多阶段随机抽样法获得调查对象.运用营养不良复合指标(CIAF)指标将研究儿童分为营养良好和营养不良儿童,运用logistic回归模型从家庭因素、母亲因素和儿童自身因素等3个层面上探索相关的积极影响因素.结果调查获得14 532名儿童,男童占57.4%.根据CIAF指标72.1%儿童为营养良好,营养不良总患病率为27.9%,以同时存在低体重和生长迟缓的儿童比例最高,达到10.3%,其次是只有生长迟缓的儿童,约为9.4%,而同时患消瘦、低体重和生长迟缓的儿童只有1.0%.北方汉族家庭儿童营养状况较好,高收入家庭、父亲有较高教育程度、家庭孩子少对儿童营养有积极作用;控制家庭因素后体重重及教育程度高的母亲其儿童营养状况较好;母亲教育程度高是6个月内儿童营养状况的积极因素.对于6~18个月儿童,母亲体重重、受教育程度高、4个月内纯母乳喂养以及增加肉类辅食是维持营养状况良好的积极因素;对于18个月以上儿童,除母亲体重重和教育程度高是积极因素外,增加鸡蛋、肉类辅食有利于保持良好营养状况.此外,家庭因素是影响6个月以上儿童营养状况的重要因素.结论出生在家庭经济状况好、儿童数少、父亲教育程度高,母亲营养状况好的农村家庭的儿童营养状况较好,提高母亲文化程度以及加强6个月后蛋白质辅食添加是保证儿童营养状况良好的重要措施.

关键词：婴幼儿营养不良影响因素

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Remediation of Cu and As contaminated water and soil utilizing biochar supported layered double hydroxide:Mechanisms and soil environment altering

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Journal of Environmental Sciences 2023年第4期126卷 275-286页

作者： Pengling shao Hua Yin Yingchao Li Yuhao Cai Caiya Yan Yibo Yuan Zhi dang School of Environment and Energy South China University of TechnologyGuangzhou 510006China Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters Guangzhou 510006China Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangzhou 510006China

Preparing materials for simultaneous remediation of anionic and cationic heavy metals contamination has always been the focus of research. Herein a biochar supported FeMnMg layered double hydroxide(LDH) composites(LB) for simultaneous remediation of copper and arsenic contamination in water and soil has been assembled by a facile co-precipitation approach. Both adsorption isotherm and kinetics studies of heavy metals removal by LB were applied to look into the adsorption performance of adsorbents in water. Moreover, the adsorption mechanisms of Cu and As by LB were investigated, showing that Cu in aqueous solution was removed by the isomorphic substitution, precipitation and electrostatic adsorption while As was removed by complexation. In addition, the availability of Cu and As in the soil incubation experiments was reduced by 35.54%–63.00% and 8.39%–29.04%, respectively by using LB. Meanwhile, the addition of LB increased the activities of urease and sucrase by 93.78%–374.35% and 84.35%–520.04%, respectively, of which 1% of the dosage was the best. A phenomenon was found that the richness and structure of microbial community became vigorous within 1% dosage of LB, which indirectly enhanced the passivation and stabilization of heavy metals. These results indicated that the soil environment was significantly improved by LB. This research demonstrates that LB would be an imaginably forceful material for the remediation of anionic and cationic heavy metals in contaminated water and soil.

关键词： Heavy metal Biochar supported layered double hydroxide composite Adsorption mechanism Soil remediation Microbial community

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