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Urban construction land demand prediction and spatial pattern simulation under carbon peak and neutrality goals:A case study of Guangzhou,China

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Journal of Geographical Sciences 2022年第11期32卷 2251-2270页

作者： HU Xintao LI Zhihui cai yumei WU Feng Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China College of Land Science and Technology China Agricultural UniversityBeijing 100193China University of Chinese Academy of Sciences Beijing 100049China Research Centre for Territorial Spatial Planning Ministry of Natural Resources of the People’s Republic of ChinaBeijing 100812China

Urban construction land has relatively high human activity and high carbon *** on urban construction land prediction under carbon peak and neutrality goals(hereafter“dual carbon”goals)is important for territorial spatial *** study analyzed quantitative relationships between carbon emissions and urban construction land,and then modified the construction land demand prediction ***,an integrated model for urban construction land demand prediction and spatial pattern simulation under“dual carbon”goals was developed,where urban construction land suitability was modified based on carbon source and sink capacity of different land-use *** Guangzhou as a case study,the integrated model was validated and applied to simulate the spatiotemporal dynamics of its urban construction land during 2030–2060 under baseline development and“dual carbon”goals *** simulation results showed that Guangzhou’s urban construction land expanded rapidly until 2030,with the spatial pattern not showing an intensive development ***’s urban construction land expansion slowed during 2030–2060,with an average annual growth rate of 0.2%,and a centralized spatial pattern *** the“dual carbon”goal scenario,Guangzhou’s urban construction land evolved into a polycentric development pattern in *** with the baseline development scenario,urban construction land expansion in Guangzhou during 2030–2060 is slower,with an average annual growth rate of only 0.1%,and the polycentric development pattern of urban construction land was more ***,land maintenance and growth,that is,a carbon sink,is more obvious under the“dual carbon”goals scenario,with the forest land area nearly 10.6%higher than that under the baseline development *** study of urban construction land demand prediction and spatial pattern simulation under“dual carbon”goals provides a scientific decision-making support tool for territorial spati

关键词： carbon peak and neutrality goals urban construction land demand prediction spatial pattern simulation Guangzhou

基于EKF算法的纯电动汽车锂电池SOC与SOH联合估算

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邵阳学院学报（自然科学版） 2024年第2期21卷 45-55页

作者：李煜蔡玉梅曾凯马仪李茂盛邵阳学院机械与能源工程学院湖南邵阳422000 邵阳学院高效动力系统智能制造湖南省重点实验室湖南邵阳422000 湖南鹏星工程咨询管理服务有限公司工程咨询服务工作室湖南吉首416007

为提高对动力电池的荷电状态(state of charge, SOC)估算精度、动力电池的健康状态(state of health, SOH)对锂电池性能的影响,提出一种扩展卡尔曼滤波(extended kalman filtering, EKF)联合估算算法。根据现有的实验数据,分析锂电池特... 详细信息

为提高对动力电池的荷电状态(state of charge, SOC)估算精度、动力电池的健康状态(state of health, SOH)对锂电池性能的影响,提出一种扩展卡尔曼滤波(extended kalman filtering, EKF)联合估算算法。根据现有的实验数据,分析锂电池特性,构建二阶RC等效电路模型,并进行参数辨识,搭建MATLAB仿真平台联合EKF算法进行SOC估算,将仿真结果与真实数据进行对比,结果表明,EKF联合估算SOC比EKF估算SOC误差精度约高1.2%,且抗干扰能力更强。

关键词： EKF算法锂电池荷电状态健康状态估算

Straw mulching alters the composition and loss of dissolved organic matter in farmland surface runoff by inhibiting the fragmentation of soil small macroaggregates

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Journal of Integrative Agriculture 2024年第5期23卷 1703-1717页

作者： Shanshan cai Lei Sun Wei Wang Yan Li Jianli Ding Liang Jin yumei Li Jiuming Zhang Jingkuan Wang Dan Wei College of Land and Environment Shenyang Agricultural UniversityShenyang 110866China Heilongjiang Academy of Black Soil Conservation and Utilization Harbin 150086China Institute of Plant Nutrition Resources and EnvironmentBeijing Academy of Agricultural and Forestry SciencesBeijing 100097China

Straw mulching is a widespread practice for reducing the soil carbon loss caused by ***,the effects of straw mulching on dissolved organic matter(DOM)runoff loss from black soil are not well *** straw mulching affects the composition and loss of runoff DOM by changing soil aggregates remains largely ***,a straw mulching treatment was compared to a no mulching treatment(as a control)on sloping farmland with black soil erosion in Northeast *** divided the soil into large macroaggregates(>2 mm),small macroaggregates(0.25-2 mm),and microaggregates(<0.25 mm).After five rain events,the effects of straw mulching on the concentration(characterized by dissolved organic carbon(DoC)and composition(analyzed by fluorescence spectroscopy)of runoff and soil aggregate DOM were *** results showed that straw mulching reduced the runoff amount by 54.7%.Therefore,although straw mulching increased the average DOc concentration in runoff,it reduced the total runoff DOM loss by 48.3%.The composition of runoff DOM is similar to that of soil,as both contain humic-like acid and protein-like *** straw mulching treatment,the protein-like components in small macroaggregates accumulated and the protein-like components in runoff declined with rain *** spectroscopy technology may help in understanding the hydrological paths of rain events by capturing the dynamic changes of runoff and soil DOM characteristics.A variation partitioning analysis(VPA)indicated that the DOM concentration and composition of microaggregates explained 68.2%of the change in runoff DOM from no mulching plots,while the change in runoff DOM from straw mulching plots was dominated by small macroaggregates at a rate of 55.1%.Taken together,our results demonstrated that straw mulching reduces the fragmentation of small macroaggregates and the loss of microaggregates,thus effecting DOM compositions in soil and reducing the DOM loss in *** results provi

关键词： dissolved organic matter black soil surface runoff aggregates fluorescence spectrum

Single-cell RNA sequencing reveals abnormal transcriptome signature of erythroid progenitors in pure red cell aplasia

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Genes & Diseases 2024年第1期11卷 49-52页

作者： yumei Liu Haiyue Niu Jie Ren Zhiqin Wang Li Yan Limin Xing Zonghong Shao Rong Fu Zhigang cai Huaquan Wang Department of Hematology Tianjin Medical University General HospitalTianjin 300052China School of Basic Medical Sciences Tianjin Medical UniversityTianjin 300070China

Pure red cell aplasia(PRCA)is a bone marrow failure syndrome characterized by severe anemia,reticulocytopenia,selective reduction,and even the absence of bone marrow erythroid precursors,while leukocyte and platelet counts are normal.1 Acquired PRCA can be divided into primary and *** are mediated by immune *** in the quantity and dysfunction of committed erythroid progenitors(EPs),including burst forming uniterythroid(BFU-E)and colony forming unit-erythroid(CFU-E),may be the source of reduced erythropoiesis and needs to be elucidated.

关键词： progenitor anemia leukocyte

The First-in-Human Whole-Body Dynamic Pharmacokinetics Study of Aptamer

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Research 2024年第1期2023卷 119-130页

作者： Ding Ding Haitao Zhao Dali Wei Qinglai Yang cai Yang Ruowen Wang yumei Chen Lianghua Li Shuxian An Qian Xia Gang Huang Jianjun Liu Zeyu Xiao Weihong Tan Institute of Molecular Medicine(IMM) Renji HospitalState Key Laboratory of Oncogenes and Related GenesShanghai Jiao Tong University School of Medicineand College of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Nuclear Medicine Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China Center for Molecular Imaging Probes Cancer Research InstituteUniversity of South ChinaHengyangHunan 421001China The Key Laboratory of Zhejiang Province for Aptamers and Theranostics Zhejiang Cancer HospitalHangzhou Institute of Medicine(HIM)Chinese Academy of SciencesHangzhouZhejiang 310022China Molecular Science and Biomedicine Laboratory(MBL) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangshaHunan 410082China Shanghai Key Laboratory of Molecular Imaging Shanghai University of Medicine and Health SciencesShanghai 201318China Department of Pharmacology and Chemical Biology Shanghai Jiao Tong University School of MedicineShanghai200127China

Serving as targeting ligands,aptamers have shown promise in precision ***,the lack of knowledge of the biosafety and metabolism patterns in the human body largely impeded aptamers’clinical *** bridge this gap,here we report the first-in-human pharmacokinetics study of protein tyrosine kinase 7 targeted SGC8 aptamer via in vivo PET tracking of gallium-68(^(68)Ga)radiolabeled *** specificity and binding affinity of a radiolabeled aptamer,named ^(68)Ga[Ga]-NOTA-SGC8,were maintained as proven in *** preclinical biosafety and biodistribution evaluation confirmed that aptamers have no biotoxicity,potential mutation risks,or genotoxicity at high dosage(40 mg/kg).Based on this result,a first-in-human clinical trial was approved and carried out to evaluate the circulation and metabolism profiles,as well as biosafety,of the radiolabeled SGC8 aptamer in the human *** advantage of the cutting-edge total-body PET,the aptamers’distribution pattern in the human body was acquired in a dynamic fashion.

关键词： metabolism dosage Whole

Transmission identification of Escherichia coli aerosol in chicken houses to their environments using ERIC-PCR

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Science China(Life Sciences) 2008年第2期51卷 164-173页

作者： DUAN HuiYong CHAI TongJie cai yumei ZHONG ZhaoBing YAO MeiLing ZHANG XingXiao College of Animal Husbandry and Veterinary Medicine Shandong Agricultural UniversityTai'an 271018China

In order to study E. coli aerosol spreading from chicken houses to their surrounding air, air samples, including indoor and outdoor air (upwind 10 and 50 m as well as downwind 10, 50, 100, 200 and 400 m away) of 5 chicken houses were collected using six-stage Andersen microbial samplers and Reuter-Centrifugal samplers (RCS). E. coli concentrations (CFU/m3 air) collected from different sampling sites were calculated. E. coli strains from chicken feces samples were also isolated. Furthermore, the enterobacterial repetitive intergenic consensus (ERIC)-PCR method was applied to amplify the isolated E. coli strain DNA samples. Through the genetic similarity analyses of the E. coli obtained from different sampling sites, the spreading of bioaerosol from animal houses to the ambient air was characterized. The results showed that the isolated E. coli concentrations in indoor air (9―63 CFU/m3) in 5 chicken houses were higher than those in upwind and downwind air, but there were no significant differences between the indoor and downwind sites 10 m away from all the 5 houses (P>0.05). The phylogenetic tree indicated that a part of the E. coli (34.1%) isolated from indoor air had 100% similarity with those isolated from feces, and that most of E. coli isolated (54.5%) from downwind at 10, 50, 100 or even 200 m had 100% similarity with those isolated from indoor air or feces too. But those isolated from upwind air had a lower similarity (73%―92%) with corresponding strains isolated from indoor air or feces. Our results suggested that some strains isolated from downwind air and indoor air originated in the chicken feces, but most of isolates obtained from upwind air samples did not come from the chicken feces or indoor air. Effective hygienic measures should be taken in animal farms to prevent or minimize downwind spreading of microorganism aerosol.

关键词： chicken house spread of E.coli aerosol ERIC-PCR similarity identification epidemiological significance

Recrystallization of High Carbon Steel during High Strain Rate

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Journal of University of Science and Technology Beijing 2001年第1期8卷 55-58页

作者： Di Tang, Qingwu cai, Yueqin Li, yumei Pu, Yuzhou Zhu National Engineering Rolling Center of University of Science & Technology Beijing, Beijing 100083, China Iron & Steel Research Inst. Maan Shan Iron and Steel Co. Ltd., Maan Shan 243000, China National Engineering Rolling Center Univ. of Sci. and Technology Beijing Beijing 100083 China

The recrystallization of high carbon steel during high temperature and high speed rolling has been studied by analyzing the stress-strain curves and the austenite grain size. Isothermal multi-pass hot compression at high strain rate was carried out by Gleeble-200D. The austenite grain size was measured by IBAS image analysis system. The results show that static recrystallization occurred at interpass time under pre-finish rolling, and at the finish rolling stage, due to the brief interpass time, static recrystallization can not be found.

关键词： high strain rate stress-strain curve recrystallization austenite grain

The expression of immune-related gene of ducks infected with Avian pathogenic Escherichia coli(APEC)

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The expression of immune-related gene of ducks infected with...

基于GIS的村级土地生态评价研究——以重庆市江津区燕坝村为例

中国畜牧兽医学会动物微生态学分会第五届第十二次全国学术研讨会

作者： Rong Li Ning Li Jinzhou Zhang Yao Wang Jiyuan Liu yumei cai Tongjie Chai Liangmeng Wei College of Animal Science and Veterinary Medicine Shandong Agricultural University Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province Collaborative Innovation Centre for the Origin and Control of Emerging Infectious Diseases of Taishan Medical College

Avian pathogenic Escherichia coli(APEC) can cause a serious disease in ducks,characterized by perihepatitis,pericarditis and *** the studies of bacteria isolation and methods of detection have been already reported,the host immune responses to APEC infection were still *** this research,we examined the expression of immune-related genes and bacteria distribution in APEC-infected ducks *** results demonstrated that APEC could quickly replicate in multiple tissues with the highest bacteria content in the spleen at 2 day post infection at early *** expressions of Toll-like receptors(TLRs),avian P-defensins(AvBDs) and Major histocompatibility complex(MHC) were tested in the liver,spleen and brain of the infected ***2,TLR4,TLRS and TLR15 showed different expression pattern,which indicated they were all response to APEC *** expression of AvBD2 was up-regulated in all the tested tissues,whereas the expression of AvBD4,AvBD5,AvBD7 and AvBD9 were down-regulated during three tested ***,MHC-Ⅰ was up-regulated at all tested days,but MHC-Ⅱ was dramatically *** study suggested that APEC could replicate in various tissues in a short time,and the activation of host immune responses begins at the initial time of *** results were useful to understand the immune responses of ducks infection with APEC and put insight into pathogenesis of APEC due to host facts.

关键词： Cherry Valley ducks APEC Host immune responses TLRs AvBDs MHCs

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北京大学学报（自然科学版） 2012年第6期48卷 982-988页

作者：程伟吴秀芹蔡玉梅北京林业大学水土保持学院北京100083 中国土地勘测规划院北京100035

在梳理土地生态评价的内涵和国内外研究现状的基础上,以重庆市江津区龙华镇燕坝村为案例,基于GIS技术,对燕坝村土地进行了生态评价。根据当地的实际情况和资料的可得性,构建了由4个目标层、10个指标层和18个因子组成的指标体系。然后,... 详细信息

在梳理土地生态评价的内涵和国内外研究现状的基础上,以重庆市江津区龙华镇燕坝村为案例,基于GIS技术,对燕坝村土地进行了生态评价。根据当地的实际情况和资料的可得性,构建了由4个目标层、10个指标层和18个因子组成的指标体系。然后,利用专家打分法确定权重,并应用GIS的栅格分析功能,逐一对各个指标层和目标层因子得分进行了计算。最终得到各个栅格单元的生态综合评价得分。结果显示:燕坝村一等地和二等地生态质量较好,占总面积32%左右,主要分布在中部及东南部较平坦的区域;三等地生态质量适中,所占比例最大,为42.87%,主要分布在嘉陵江河漫滩等地;其余为四等地和五等地,生态质量较差,主要分布在海拔相对较高的丘陵集中区和地质灾害易发点的影响范围内。该生态评价结果可为进一步实施村域参与式土地利用规划提供科学支持。

关键词：土地生态空间分析评价 ArcGIS 燕坝村