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Multiscale analysis of fine slag from pulverized coal gasification in entrained-flow bed

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International Journal of Coal Science & Technology 2024年第1期11卷 119-132页

作者： Lirui Mao Mingdong Zheng Baoliang Xia Facun jiao Tao liu Yuanchun Zhang Shengtao Gao Hanxu Li school of Chemical Engineering Anhui University of Science and TechnologyHuainan232001China school of Earth and Environment Anhui University of Science and TechnologyHuainan232001China Insititute of Energy Hefei Comprehensive National Science CenterHefei230031China

Fine slag(FS)is an unavoidable by-product of coal ***,which is a simple heap of solid waste left in the open air,easily causes environmental pollution and has a low resource utilization rate,thereby restricting the development of energy-saving coal gasification *** multiscale analysis of FS performed in this study indicates typical grain size distribution,composition,crystalline structure,and chemical bonding *** FS primarily contained inorganic and carbon components(dry bases)and exhibited a"three-peak distribution"of the grain size and regular spheroidal as well as irregular *** irregular particles were mainly adsorbed onto the structure and had a dense distribution and multiple pores and *** carbon constituents were primarily amorphous in structure,with a certain degree of order and active sites.C 1s XPS spectrum indicated the presence of C–C and C–H bonds and numerous aromatic *** inorganic components,constituting 90%of the total sample,were primarily silicon,aluminum,iron,and *** inorganic components contained Si–O-Si,Si–O–Al,Si–O,SO_(4)^(2−),and Fe–O *** 2p XPS spectrum could be deconvoluted into Fe 2p_(1/2) and Fe 2p_(3/2) peaks and satellite peaks,while Fe existed mainly in the form of Fe(III).The findings of this study will be beneficial in resource utilization and formation mechanism of fine slag in future.

关键词： Coal gasification Fine slag Multiscale analysis Carbon components Inorganic components

Road Centrality and Landscape Spatial Patterns in wuhan Metropolitan Area,china

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Chinese Geographical Science 2015年第4期25卷 511-522页

作者： liu yaolin WANG Huimin jiao limin liu yanfang HE Jianhua AI Tinghua school of resource and Environment Science Wuhan University Key Laboratory of Geographical Information System Ministry of Education Wuhan University

Road network is a corridor system that interacts with surrounding landscapes,and understanding their interaction helps to develop an optimal plan for sustainable transportation and land *** study investigates the relationships between road centrality and landscape patterns in the wuhan Metropolitan Area,*** densities of centrality measures,including closeness,betweenness,and straightness,are calculated by kernel density estimation(KDE).The landscape patterns are characterized by four landscape metrics,including percentage of landscape(PLAND),Shannon′s diversity index(SHDI),mean patch size(MPS),and mean shape index(MSI).Spearman rank correlation analysis is then used to quantify their relationships at both landscape and class *** results show that the centrality measures can reflect the hierarchy of road network as they associate with road *** analysis exhibit that as centrality densities increase,the whole landscape becomes more fragmented and *** the class level,the forest gradually decreases and becomes fragmented,while the construction land increases and turns to more ***,these findings indicate that the ability and potential applications of centrality densities estimated by KDE in quantifying the relationships between roads and landscapes,can provide detailed information and valuable guidance for transportation and land-use planning as well as a new insight into ecological effects of roads.

关键词： road centrality landscape patterns kernel density estimation(KDE) landscape metrics wuhan Metropolitan Area china

Rural land use spatial allocation in the semiarid loess hilly area in china:Using a Particle Swarm Optimization model equipped with multi-objective optimization techniques

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Science china Earth sciences 2012年第7期55卷 1166-1177页

作者： liu yaolin liu DianFeng liu yanfang HE JianHua jiao limin CHEN YiYun HONG XiaoFeng school of resource and Environment Science Wuhan UniversityWuhan 430079China Ministry of Education Key Laboratory of Geographic Information System Wuhan UniversityWuhan 430079China

Semiarid loess hilly areas in china are enduring a series of environmental conflicts between urban expansion,cultivated land conservation,soil erosion and water shortage,and require land use allocation to reconcile these environmental *** argue that the optimized spatial allocation of rural land use can be achieved by a Particle Swarm Optimization (PSO) model in conjunction with multi-objective optimization *** study focuses on Yuzhong County of Gangsu Province in china,a typical catchment on the Loess Plateau,and proposes a land use spatial optimization *** model maximizes land use suitability and spatial compactness based on a variety of constraints,*** land use structure and restrictive areas,and employs an improved PSO algorithm equipped with a determinant initialization method and a dynamic weighted aggregation (DWA) method to obtain the optimized land use spatial *** results suggest that (1) approximately 4% of land use should be reallocated and these changes would alleviate the environmental conflicts in the study area;(2) the major reshuffling is slope farmland and newly added construction and cultivated land,whereas the unchanged areas are largely forests and basic farmland;and (3) the PSO is capable of optimizing rural land use allocation,and the determinant initialization method and DWA can improve the performance of the PSO.

关键词： spatial allocation rural land use particle swarm optimization multi-objective optimization Loess Plateau

The Application of BP Networks to Land Suitability Evaluation

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Geo-Spatial Information Science 2002年第1期5卷 55-61页

作者： liu yanfang jiao limin school of resource and Environment Science Wuhan University

The back propagation (BP) model of artificial neural networks (ANN) has many good qualities comparing with ordinary methods in land suitability *** analyzing ordinary methods’ limitations,some sticking points of BP model used in land evaluation,such as network structure,learning algorithm,etc.,are discussed in detail,The land evaluation of Qionghai city is used as a case *** comprehensive assessment method was also employed in this evaluation for validating and comparing.

关键词： ANN BP networks BP algorithm land suitability evaluation

城镇化过程中生态产品生产能力变化特征分析——以湖北长江经济带为例

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生态环境学报 2024年第3期33卷 469-477页

作者：朱锦维刘成武柯新利黄利民焦文轩中南民族大学公共管理学院湖北武汉430074 华中农业大学公共管理学院湖北武汉430070 武汉轻工大学化学与环境工程学院湖北武汉430023

城镇化过程中生态产品生产能力变化深刻,探究城镇化过程中生态产品生产能力的变化规律,对推进城镇化可持续发展和生态产品价值实现具有重要意义。目前,生态产品核算体系尚未形成统一认识,鲜有研究将乡村休闲旅游点和社区游憩公园等文化... 详细信息

城镇化过程中生态产品生产能力变化深刻,探究城镇化过程中生态产品生产能力的变化规律,对推进城镇化可持续发展和生态产品价值实现具有重要意义。目前,生态产品核算体系尚未形成统一认识,鲜有研究将乡村休闲旅游点和社区游憩公园等文化服务纳入核算体系,对城镇化过程中生态产品生产能力的变化规律也缺乏系统认识。以湖北长江经济带为案例区,采用USLE、CASA等生态模型和市场价值法、替代成本法等价值评价方法,对2008、2018年研究区的生态产品生产能力进行核算,并分析其变化特征以及与城镇化的相关关系。结果表明:1)2008、2018年湖北长江经济带生态产品生产能力分别为34.21×10^(3)亿元、30.28×10^(3)亿元,其中土壤保持、气候调节和科研教育服务是生态产品生产能力的核心;2)与2008年相比,2018年湖北长江经济带生态产品生产能力下降了3.92×10^(3)亿元,降幅达11.47%,其中土壤保持能力下降显著,随着乡村旅游迅速发展,休闲游憩服务增长态势明显;3)空间变化上,湖北长江经济带三分之二的县(市、区)生态产品生产能力呈下降态势,下降区域主要分布于西部、东部地区,其中重点生态功能区下降尤为明显;4)2008、2018年湖北长江经济带城镇化与生态产品生产能力存在显著负相关关系,快速城镇化过程中,生态产品生产能力受到严峻挑战。因此,在城镇化过程中,要以“两山”理念为指导,保护生态资源基础,修复受损生态系统,开发地方特色生态产品,不断提升城乡生态产品的生产能力。

关键词：生态产品生产能力生态产品价值湖北长江经济带城镇化

Greening the Belt and Road Initiative: Evidence from emergy evaluation of china’s provincial trade with ASEAN countries

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Fundamental Research 2024年第2期4卷 379-393页

作者： Xu Tian Joseph Sarkis Wei Chen Yong Geng Haozhi Pan Zuoxi liu Sergio Ulgiati SJTU-UNIDO Joint Institute of Inclusive and Sustainable Industrial Development School of International and Public AffairsShanghai Jiao Tong UniversityShanghai 200030China Worcester Polytechnic Institute Worcester MA 01609-2280USA school of Geography and Environment Shandong Normal UniversityJinan 250358China school of International and Public Affairs Shanghai Jiao Tong UniversityShanghai 200030China Key Laboratory of Clean Energy of Liaoning School of Energy and EnvironmentShenyang Aerospace UniversityShenyang 110136China Department of Science and Technology Parthenope University of NapoliNaples 80143Italy school of Environment Beijing Normal UniversityBeijing 100875China

The Belt and Road Initiative(BRI)is a central policy within china’s regional development and foreign trade *** trade has typically depended on economic valuation of resources,while the embedded environmental value is rarely *** situation exists in most BRI trade *** address BRI environmental sustainability issues,we consider the role of pivotal Chinese provinces and their key trade partners(ASEAN countries)as an illustration for the environmental value of resource *** accounting is used as the valuation tool for a sample period of seventeen *** results include:(1)Emergy valuations show sustainability of sample provinces decreased over time;(2)ASEAN countries such as Indonesia,Malaysia,Singapore,Thailand,and Vietnam play significant resource roles for provincial economic systems;(3)Diverse trends in trade between pivotal provinces and ASEAN countries resulted in an unbalanced trade structure from *** implications are proposed to promote a more globally sustainable and fair trade using BRI as an established trade policy.

关键词： International trade Emergy Belt and road initiative environmental sustainability Province

Cellular atlases of ovarian microenvironment alterations by diet and genetically-induced obesity

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Science china(Life sciences) 2024年第1期67卷 51-66页

作者： Yonghui Jiang Xueying Gao Yue liu Xueqi Yan Huangcong Shi Rusong Zhao Zi-Jiang Chen Fei Gao Han Zhao Shigang Zhao Center for Reproductive Medicine Shandong UniversityJinan 250012China Research Unit of Gametogenesis and Health of ART-Offspring Chinese Academy of Medical Sciences(No.2021RU001)Jinan 250012China Key Laboratory of Reproductive Endocrinology of Ministry of Education Shandong UniversityJinan 250012China Shandong Key Laboratory of Reproductive Medicine Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250012China Shandong Provincial Clinical Research Center for Reproductive Health Jinan 250012China National Research Center of Assisted Reproductive Technology and Reproductive Genetics Shandong UniversityJinan 250012China The Affiliated Suzhou Hospital of Nanjing Medical university Suzhou Municipal HospitalGusu SchoolNanjing Medical UniversitySuzhou 215000China Center for reproductive medicine Ren Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics Shanghai 200127China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of ScienceBeijing 100101China

Obesity,which can arise from genetic or environmental factors,has been shown to cause serious damages to the reproductive *** ovary,as one of the primary regulators of female fertility,is a complex organ comprised of heterogeneous cell types that work together to maintain a normal ovarian microenvironment(OME).Despite its importance,the effect of obesity on the entire ovary remains poorly *** this study,we performed ovary single-cell and nanoscale spatial RNA sequencing to investigate how the OME changed under different kinds of obesity,including high-fat diet(HFD)induced obesity and Leptin ablation induced obesity(OB).Our results demonstrate that OB,but not HFD,dramatically altered the proportion of ovarian granulosa cells,theca-interstitial cells,luteal cells,and endothelial ***,based on the spatial dynamics of follicular development,we defined four subpopulations of granulosa cell and found that obesity drastically disrupted the differentiation of mural granulosa cells from small to large antral ***,HFD enhanced follicle-stimulating hormone(FSH)sensitivity and hormone conversion,while OB caused decreased sensitivity,inadequate steroid hormone conversion,and impaired follicular *** differences can be explained by the differential expression pattern of the transcription factor ***,our study provides a powerful and high-resolution resource for profiling obesity-induced OME and offers insights into the diverse effects of obesity on female reproductive disorders.

关键词： obesity ovarian microenvironment snRNA-seq Stereo-seq Foxo1

城市用地密度分布及其演化:形态模型和过程模型的对比

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中国土地科学 2024年第4期38卷 113-124页

作者：董婷田永淇徐向东许刚焦利民安徽师范大学皖江流域退化生态系统的恢复与重建省部共建协同创新中心安徽芜湖241002 安徽师范大学地理与旅游学院安徽芜湖241002 武汉大学资源与环境科学学院湖北武汉430079 自然资源部国土卫星遥感应用重点实验室江苏南京210013

研究目的:深入分析城市用地密度的空间分布及其演化特征,揭示城市空间结构特征与发展规律。研究方法:圈层分析法,形态模型(ULD)和过程模型(GMP)。研究结果:(1)城市用地密度从城市中心向外逐渐非线性衰减,呈现反S形分布,城市中心吸引和... 详细信息

研究目的:深入分析城市用地密度的空间分布及其演化特征,揭示城市空间结构特征与发展规律。研究方法:圈层分析法,形态模型(ULD)和过程模型(GMP)。研究结果:(1)城市用地密度从城市中心向外逐渐非线性衰减,呈现反S形分布,城市中心吸引和土地资源稀缺性是其形成的主要原因;(2)快速城市化时期城市郊区增长速度快于核心区,导致城市紧凑度下降,突显了合理管控城市边界的重要性;(3)城市紧凑度在城市化过程中表现出先下降后回升趋势,反映了从分散扩张到集中利用的空间模式转变;(4)对于多中心等复杂形态城市,引入新参数可以进一步提升过程模型的拟合优度。研究结论:本文揭示了城市用地密度空间衰减的形态特征和过程机理,形态和过程模型为定量理解城市用地密度空间格局提供了有效工具。

关键词：城市土地利用城市用地密度空间结构城市形态城市紧凑度

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可持续城市化与国土空间优化

武汉大学学报（信息科学版） 2021年第1期46卷 1-11页

作者：焦利民刘耀林武汉大学资源与环境科学学院湖北武汉430079 武汉大学数字制图与国土信息应用工程自然资源部重点实验室湖北武汉430079 武汉大学地理信息系统教育部重点实验室湖北武汉430079

当前可持续国土空间发展面临重大挑战,面向生态文明和新型城镇化战略需求,探讨可持续城市化和国土空间优化的路径、方法和建模具有重要意义。可持续国土空间发展没有现成路径,探索国土空间优化的中国路径成为必然选择。城市及其周边是... 详细信息

当前可持续国土空间发展面临重大挑战,面向生态文明和新型城镇化战略需求,探讨可持续城市化和国土空间优化的路径、方法和建模具有重要意义。可持续国土空间发展没有现成路径,探索国土空间优化的中国路径成为必然选择。城市及其周边是国土空间优化的关键地域,全球城市扩张研究表明,城市扩张具有路径依赖性、松散化和低密度化倾向,中国可持续城市化路径应以紧凑、高密度、宜居、低碳为基本特征。耦合可持续城市化的国土空间优化路径应遵循生态优先、节约优先、集约发展、协调发展的理念,重构国土空间规划体系。作为信息技术支撑,国土空间优化决策支持建模应面向可持续从指标量化、目标体系、约束规则等方面重构多目标协同优化模型。

关键词：国土空间优化空间规划城市化可持续国土空间发展