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Research Development of Endocrine Disrupting Chemicals(EDCs) in Water in China

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Biomedical and Environmental Sciences 2003年第1期16卷 62-67页

作者： HONG ZHOU, XIAO-JIAN zhang, AND zhan-sheng WANGDepartment of Environmental Sciences and Engineer, Tsinghua University, Beijing 100084, China Department of Environmental Sciences and Engineer Tsinghua University Beijing 100084 Chin

More and more importance has been attached to the problem of endocrine disrupting chemicals (EDCs) since 1960s. This article elaborates the recent research progress of EDCs in water and the trends in the near future i... 详细信息

关键词： Endocrine disrupting chemicals Source water Alkylphenols Phthalates Atrazine

Estimation of Methane Emissions from Municipal Solid Waste Landfills in China Based on Point Emission Sources

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Advances in Climate Change Research 2014年第2期5卷 81-91页

作者： CAI Bo-Feng LIU Jian-Guo GAO Qing-Xian NIE Xiao-Qin CAO Dong LIU Lan-Cui ZHOU Ying zhang zhan-sheng Chinese Academy for Environmental Planning School of Environment Tsinghua University Chinese Research Academy of Environmental Sciences China Urban Construction Design and Research Institute

The methane(CH4) emissions from municipal solid waste(MSW) landfills in China in 2007 were estimated based on database of the three-dimensional emission factors matrix and point sources, by an IPCC recommended FOD(firstorder decay) model. The location, capacity and age of landfills constitute the three dimensions of the emission factors matrix, which were obtained by laboratory analysis and in situ investigation. Key parameters such as waste composition,degradable organic carbon ratio, CH4 correction factor, oxidation factor and recovery rate, were carefully analyzed in terms of these three dimensions. The point sources database consists of 2,107 MSW landfills in cities and towns of China in 2007. The results show that the CH4 emissions from MSW landfills were 1.186 Mt in 2007. Compared with the CH4 emissions of 2.20 Mt in 2005, the significant discrepancy mainly comes from statistical data of landfills, e.g., number of landfills and amount of waste disposed in landfills. CH4 emissions were lower than 700 t for most of the landfills, whereas there were 279 landfills with emissions larger than 1,000 t, and only 10 landfills with emissions larger than 10,000 *** province ranks the largest emitter with 98,700 t while Tibet is the smallest emitter with 2,100 t. In general,the emissions from eastern provinces, such as Jiangsu, Guangdong and Zhejiang, were larger than those from western provinces, such as Ningxia, Tibet and Qinghai.

关键词： municipal solid waste landfill CH4 emissions point emission sources

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反演法设计磁共振射频阵列线圈的研究

中国生物医学工程学报 2012年第6期31卷 822-830页

作者：张战胜辛学刚南方医科大学生物医学工程学院广州510515

磁共振射频阵列线圈技术的出现进一步提高了磁共振成像的质量,但现有的阵列线圈无法凸显局部感兴趣区域(ROI)。为了满足术中磁共振发展的需求,研究反演法在磁共振射频阵列发射线圈设计与优化中的应用。首先根据临床需求确定ROI,设计目... 详细信息

磁共振射频阵列线圈技术的出现进一步提高了磁共振成像的质量,但现有的阵列线圈无法凸显局部感兴趣区域(ROI)。为了满足术中磁共振发展的需求,研究反演法在磁共振射频阵列发射线圈设计与优化中的应用。首先根据临床需求确定ROI,设计目标函数,应用反演法计算阵列线圈的电流密度,采用正则化技术优化计算中出现的高病态问题,采用流函数技术求解线圈绕组。根据临床不同需求设计了3种ROI位置的阵列发射线圈,ROI内的磁场强度达到0.957 4 A/m以上,与目标磁场强度的误差在5%以内,10 cm ROI内磁场均匀度达到5×10-8以内,满足理论设计要求。实验结果表明,基于反演法设计的射频阵列发射线圈在ROI内的磁场分布符合理论要求,证明反演法在射频阵列发射线圈设计中的适用性。

关键词：磁共振成像阵列线圈反演法正则化技术

Subretinal fibrosis secondary to neovascular age-related macular degeneration:mechanisms and potential therapeutic targets

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Neural Regeneration Research 2025年第2期20卷 378-393页

作者： Jingxiang zhang Xia sheng Quanju Ding Yujun Wang Jiwei Zhao Jingfa zhang Department of Ophthalmology People’s Hospital of Huangdao DistrictQingdaoShandong ProvinceChina Department of Urology People’s Hospital of Huangdao DistrictQingdaoShandong ProvinceChina Department of Ophthalmology Shanghai General Hospital(Shanghai First People’s Hospital)Shanghai Jiao Tong University School of MedicineShanghaiChina National Clinical Research Center for Eye Diseases Shanghai Key Laboratory of Ocular Fundus DiseasesShanghai Engineering Center for Visual Science and PhotomedicineShanghai Engineering Center for Precise Diagnosis and Treatment of Eye DiseasesShanghaiChina

Subretinal fibrosis is the end-stage sequelae of neovascular age-related macular *** causes local damage to photoreceptors,retinal pigment epithelium,and choroidal vessels,which leads to permanent central vision loss of patients with neovascular age-related macular *** pathogenesis of subretinal fibrosis is complex,and the underlying mechanisms are largely ***,there are no effective treatment options.A thorough understanding of the pathogenesis of subretinal fibrosis and its related mechanisms is important to elucidate its complications and explore potential *** current article reviews several aspects of subretinal fibrosis,including the current understanding on the relationship between neovascular age-related macular degeneration and subretinal fibrosis;multimodal imaging techniques for subretinal fibrosis;animal models for studying subretinal fibrosis;cellular and non-cellular constituents of subretinal fibrosis;pathophysiological mechanisms involved in subretinal fibrosis,such as aging,infiltration of macrophages,different sources of mesenchymal transition to myofibroblast,and activation of complement system and immune cells;and several key molecules and signaling pathways participating in the pathogenesis of subretinal fibrosis,such as vascular endothelial growth factor,connective tissue growth factor,fibroblast growth factor 2,platelet-derived growth factor and platelet-derived growth factor receptor-β,transforming growth factor-βsignaling pathway,Wnt signaling pathway,and the axis of heat shock protein 70-Toll-like receptors 2/*** review will improve the understanding of the pathogenesis of subretinal fibrosis,allow the discovery of molecular targets,and explore potential treatments for the management of subretinal fibrosis.

关键词： choroidal neovascularization epithelial-mesenchymal transition mesenchymal transition myofibroblast neovascular age-related macular degeneration submacular fibrosis subretinal fibrosis therapeutic targets transforming growth factor-β vascular endothelial growth factor

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急倾斜薄矿脉深孔落矿工艺参数优化

东北大学学报(自然科学版) 2013年第2期34卷 288-292页

作者：安龙徐帅李元辉张占升东北大学深部金属矿山安全开采教育部重点实验室

针对金厂沟梁金矿18#急倾斜薄矿脉开展高效采矿技术研究,完成了4种采矿方法的经济技术比较,优选深孔爆破的无底柱分段崩落法进行开采.提出薄矿脉深孔爆破高效采矿技术成功实施的两个关键问题:脉外采准工程稳定性和薄矿脉爆破夹制作用.... 详细信息

针对金厂沟梁金矿18#急倾斜薄矿脉开展高效采矿技术研究,完成了4种采矿方法的经济技术比较,优选深孔爆破的无底柱分段崩落法进行开采.提出薄矿脉深孔爆破高效采矿技术成功实施的两个关键问题:脉外采准工程稳定性和薄矿脉爆破夹制作用.设计采用"之字形"和"梅花形"两种布孔方式来克服爆破的夹制作用.依据库兹涅佐夫公式、坎宁安爆破指数计算了相应爆破设计参数的罗辛-拉姆勒(R-R)块度分布,预测爆破后的平均块度约为10 cm.基于FLAC3D分析了分段运输巷道等脉外采准工程的稳定性,结果表明,脉外运输巷道位于凿岩巷道6 m之外即可保证采准工程的稳定.

关键词：急倾斜薄矿脉深孔爆破无底柱分段崩落法罗辛-拉姆勒分布数值模拟

基于CMS的采场回采质量评价方法及应用研究

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中国矿业 2015年第5期24卷 149-152页

作者：张占升张建华安龙内蒙古金陶股份有限公司内蒙古赤峰024327 东北大学深部金属矿山安全开采教育部重点实验室辽宁沈阳110819

针对传统采场回采质量评价中相关数据难于获取,回采质量指标只能靠经验来推测的现状,提出了基于CMS的采场回采质量评价方法。该方法运用CMS三维激光探测系统准确获取采场回采过程中的三维空间数据,基于三维空间数据处理技术,应用geomagi... 详细信息

针对传统采场回采质量评价中相关数据难于获取,回采质量指标只能靠经验来推测的现状,提出了基于CMS的采场回采质量评价方法。该方法运用CMS三维激光探测系统准确获取采场回采过程中的三维空间数据,基于三维空间数据处理技术,应用geomagic软件构建采场回采过程中的3D数据库,并通过引入矿体采空区复合三维模型,精确地得到了采场的超、欠挖量,进而获得采场回采过程中的贫化和损失等参数。将该方法应用到金厂沟梁金矿7181采场,得到其爆破后采场矿石的损失率为22.5%,贫化率为7.11%,为该采场的爆破参数优化提供了相应的数据支撑。

关键词：空区三维激光探测系统 (CMS) 回采质量三维建模采空区

Exploration of Gas‑Dependent Self‑Adaptive Reconstruction Behavior of Cu_(2)O for Electrochemical CO_(2)Conversion to Multi‑Carbon Products

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Nano-Micro Letters 2025年第3期17卷 280-296页

作者： Chaoran zhang Yichuan Gu Qu Jiang Ziyang sheng Ruohan Feng Sihong Wang Haoyue zhang Qianqing Xu Zijian Yuan Fang Song State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Structural reconstruction of electrocatalysts plays a pivotal role in catalytic performances for CO_(2)reduction reaction(CO_(2)RR),whereas the behavior is by far superficially ***,we report that CO_(2)accessibility results in a universal self-adaptive structural reconstruction from Cu_(2)O to Cu@CuxO composites,ending with feeding gas-dependent microstructures and catalytic *** CO_(2)-rich atmosphere favors reconstruction for CO_(2)RR,whereas the CO_(2)-deficient one prefers that for hydrogen evolution *** the assistance of spectroscopic analysis and theoretical calculations,we uncover a CO_(2)-induced passivation behavior by identifying a reductionresistant but catalytic active Cu(I)-rich amorphous layer stabilized by*CO ***,we find extra CO production is indispensable for the robust production of *** inverse correlation between durability and FECO/FEC2H4 is disclosed,suggesting that the selfstabilization process involving the absorption of*CO intermediates on Cu(I)sites is essential for durable *** by this insight,we design hollow Cu_(2)O nanospheres for durable and selective CO_(2)RR electrolysis in producing *** work recognizes the previously overlooked passivation reconstruction and self-stabilizing behavior and highlights the critical role of the local atmosphere in modulating reconstruction and catalytic processes.

关键词： CO_(2)reduction reaction Electrocatalysts Cu_(2)O Reconstruction Self-adaptive electrocatalysis

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紫外光芬顿-膜分离耦合体系降解金霉素

中国环境科学 2020年第4期40卷 1577-1585页

作者：姚宏向鑫鑫薛宏慧孙绍斌张旭鲁垠涛张战胜北京交通大学土木建筑工程学院北京100044 抗生素/抗性基因水环境污染控制技术北京市国际科技合作基地北京100044 “水中典型污染物控制与水质保障”北京市重点实验室北京100044 生态环境部环境规划院北京100012

以金霉素为降解对象,采用沉淀法制备α-Fe OOH光催化剂,进一步将其用共价结合法负载在陶瓷膜上,用SEM、XRD、EDS、UV-Vis和FTIR对α-Fe OOH和光催化陶瓷膜进行表征.结果表明催化剂α-Fe OOH呈针状或纺锤长片状,长宽分别为500~550nm、25~... 详细信息

以金霉素为降解对象,采用沉淀法制备α-Fe OOH光催化剂,进一步将其用共价结合法负载在陶瓷膜上,用SEM、XRD、EDS、UV-Vis和FTIR对α-Fe OOH和光催化陶瓷膜进行表征.结果表明催化剂α-Fe OOH呈针状或纺锤长片状,长宽分别为500~550nm、25~50nm,经α-Fe OOH改性的陶瓷膜孔隙率由14.83%变为8.11%.研究光芬顿陶瓷膜耦合体系对金霉素的降解效率和动力学行为,确定了光芬顿陶瓷膜耦合体系的最优降解条件为金霉素初始浓度50mg/L,H2O2投加浓度10mmol/L,UV强度为3796.6μW/cm^2.进一步利用UV-Vis光谱分析了两种体系对金霉素的降解机理,光催化剂体系下,H2O2的浓度基本保持不变,而光芬顿陶瓷膜耦合体系下H2O2的浓度先升后降,同时后者在同一时间点对TOC和NH4+-N去除率更高,表明光芬顿陶瓷膜耦合体系氧化能力更强,对金霉素的降解更为彻底.

关键词：非均相光芬顿金霉素陶瓷膜膜分离降解机理

施磷对玉米吸磷量、产量和土壤磷含量的影响及其相关性

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中国生态农业学报 2013年第7期21卷 801-809页

作者：张立花张辉黄玉芳叶优良张占胜詹宗立河南农业大学资源与环境学院郑州450002 偃师市土壤肥料工作站偃师471900

为了给玉米磷高效利用提供理论依据,在低磷土壤（Olsen-P 4.9 ***^-1）上,通过田间试验,研究了施磷0（T0）、50 kg（P2O5）.hm^-2（T1）、100 kg（P2O5）.hm^-2（T2）、200 kg（P2O5）.hm^-2（T3）、1 000 kg（P2O5）.hm^-2（T4）对两... 详细信息

为了给玉米磷高效利用提供理论依据,在低磷土壤（Olsen-P 4.9 ***^-1）上,通过田间试验,研究了施磷0（T0）、50 kg（P2O5）.hm^-2（T1）、100 kg（P2O5）.hm^-2（T2）、200 kg（P2O5）.hm^-2（T3）、1 000 kg（P2O5）.hm^-2（T4）对两个玉米品种＂鲁单9002＂（LD9002）、＂先玉335＂（XY335）的产量、磷素吸收利用及根际磷动态变化的影响。结果表明：两玉米品种根际土。

关键词：玉米施磷量根际磷吸磷量产量