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滇东北地区滑坡易发性评价

地震研究 2025年第1期48卷 89-99页

作者：刘绍昌白仙富储正伟云南省地震局云南昆明650224 云南南方地勘工程有限公司云南大理671000

在研究滇东北地震滑坡危险区滑坡致灾因子和孕灾环境的基础上,选取了地形、地质、其他共3大类12项评价因子,通过评价因子独立性检验,构建滑坡易发性评价指标体系。随机选取研究区70%的滑坡点作为滑坡易发性评价训练样本,运用GIS空间分... 详细信息

在研究滇东北地震滑坡危险区滑坡致灾因子和孕灾环境的基础上,选取了地形、地质、其他共3大类12项评价因子,通过评价因子独立性检验,构建滑坡易发性评价指标体系。随机选取研究区70%的滑坡点作为滑坡易发性评价训练样本,运用GIS空间分析功能,分别采用确定性系数模型、二元逻辑回归模型以及二者组成的耦合模型进行滑坡易发性评价。选取未参与训练样本的30%滑坡点作为检验样本,使用受试者工作特征(ROC)曲线对以上3种模型的评价结果和精度进行验证。结果显示:高程、坡度、距道路距离、地质岩性、NDVI、年平均降雨量对滑坡易发性影响相对较大。耦合模型的AUC值为0.781,高于确定性系数模型的AUC值0.754和二元逻辑回归模型的AUC值0.748。耦合模型合理性和评价精度高于单一模型,且均符合模型检验要求。耦合模型揭示了各评价因子对滑坡易发性影响的差异性,能够较好地反映滑坡易发性影响因子之间相互权重大小,预测的研究区滑坡的空间分布与野外实际调查结果高度吻合。

关键词：滇东北滑坡易发性耦合模型

Zwitterionic monolayer grafted ceramic membrane with an antifouling performance for the efficient oil-water separation

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Chinese Journal of Chemical Engineering 2022年第2期35卷 227-235页

作者： Tianyu Zhang Qian Wang Wei Luan Xue Li xianfu Chen Dong Ding Zhichao Shen Minghui Qiu Zhaoliang Cui Yiqun Fan State Key Laboratory of Materials-Oriented Chemical Engineering National Engineering Research Center for Special Separation MembranesCollege of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Zhangjiagang Institute of Nanjing Tech University Suzhou 215699China

Enormous demands on the separation of oil/water(O/W)emulsions in various industries,such as petrochemical,food and pharmaceutical industries,are looking for high performance and energy-efficient separation *** membranes have been used to deal with O/W emulsions,for its outstanding characteristics of easy-operation,high-flux,and long-term ***,membrane fouling is still a challenge in the industrial application of ceramic ***,antifouling ceramic membranes were fabricated by grafting zwitterions on the membrane surface via an environment-friendly two-step grafting method,which improves the antifouling property and *** grafting of such zwitterion on the ceramic surface was assessed by the combination of FTIR and XPS *** importantly,the hydration can be formed by electrostatic interactions layer on the modified membrane,which was confirmed by TGA *** antifouling performance of prepared zwitterionic ceramic membranes in the separation of O/W emulsions was systematically *** results suggested that zwitterion can significantly improve the flux of ceramic ultrafiltration membrane,and can also improve antifouling property dramatically by reducing the irreversible fouling in the separation of O/W ***,zwitterionic ceramic membranes hold promising potentials as an antifouling,highly efficient and green method in the practical purification of the O/W emulsions.

关键词： Ceramic membrane Zwitterionic Anti-fouling Hydration layer Oil/water emulsion

Mutual feedback between algal blooming and global warming

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Journal of Oceanology and Limnology 2024年第3期42卷 787-801页

作者： Jianrong MA Guijun YANG xianfu ZHAO Boqiang QIN Kun SHAN Botian ZHOU Yan ZENG Jingfu WANG Jingan CHEN Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714China State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550002China School of Environment and Ecology Jiangnan UniversityWuxi 214122China Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem Institute of HydroecologyMinistry of Water Resources&Chinese Academy of SciencesWuhan 430079China State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China

Global warming and algal blooms have been two of the most pressing problems faced by the world *** recent decades,numerous studies indicated that global warming promoted the expansion of algal ***,research on how algal blooms respond to global warming is *** warming coupled with eutrophication promoted the rapid growth of phytoplankton,which resulted in an expansion of algal *** blooms are affected by the combined effects of global warming,including increases in temperatures,CO_(2)concentration,and nutrient input to aquatic systems by extreme weather *** the growth of phytoplankton requires CO_(2),they appear to act as a carbon ***,algal blooms will release CH4,CO_(2),and inorganic nitrogen when they die and *** substrate nitrogen increases from decompose algal biomass,more N2O will be released by nitrification and *** comparison to CO_(2),CH4has 28-fold and N2O has 265-fold greenhouse ***,algal blooms in the polar regions may contribute to melting glaciers and sea ice(will release greenhouse gas,which contribute to global warming)by reducing surface albedo,which consequently would accelerate global ***,algal blooms and global warming could form feedback loops which prevent human survival and *** researches shall examine the mechanism,trend,strength,and control strategies involved in this mutual ***,it will promote global projects of environmental protection combining governance greenhouse gas emissions and algal blooms,to form a geoengineering for regulating the cycles of carbon,nitrogen,and phosphorus.

关键词： climate change carbon neutrality eutrophication greenhouse gas glaciers melting geoengineering

Inkjet-Printing Controlled Phase Evolution Boosts the Efficiency of Hole Transport Material Free and Carbon-Based CsPbBr_(3) Perovskite Solar Cells Exceeding 9%

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Energy & Environmental Materials 2024年第2期7卷 209-220页

作者： Lihua Zhang Shi Chen Jie Zeng Zhengyan Jiang Qian Ai xianfu Zhang Bihua Hu Xingzhu Wang Shihe Yang Baomin Xu Department of Materials Science and Engineering and Shenzhen Engineering Research and Development Center for Flexible Solar Cells Southern University of Science and TechnologyShenzhen 518055China Department of Chemistry The Hong Kong University of Science and TechnologyClear Water BayHong KongChina Henan Key Laboratory of Photovoltaic Materials Henan UniversityKaifeng 475004China Guangdong Key Lab of Nano-Micro Material Research School of Chemical Biology and BiotechnologyShenzhen Graduate SchoolPeking UniversityShenzhen 518055China Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong Southern University of Science and TechnologyShenzhen 518055China Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

Hole transport material free carbon-based all-inorganic CsPbBr_(3)perovskite solar cells(PSCs)are promising for commercialization due to its low-cost,high open-circuit voltage(V_(oc))and superior *** to the different solubility of PbBr_(2)and CsBr in conventional solvents,CsPbBr_(3)films are mainly obtained by multi-step spin-coating through the phase evolution from PbBr_(2)to CsPb_(2)Br_(5)and then to CsPbBr_(3).The scalable fabrication of high-quality CsPbBr_(3)films has been rarely ***,an inkjet-printing method is developed to prepare high-quality CsPbBr_(3)*** formation of long-range crystalline CsPb_(2)Br_(5)phase can effectively improve phase purity and promote regular crystal stacking of CsPbBr_(3).Consequently,the inkjet-printed CsPbBr_(3)C-PSCs realized PCEs up to 9.09%,8.59%and 7.81%with active areas of 0.09,0.25,and 1 cm^(2),respectively,demonstrating the upscaling potential of our fabrication method and *** high performance is mainly ascribed to the high purity,strong crystal orientation,reduced surface roughness and lower trap states density of the as-printed CsPbBr_(3)*** work provides insights into the relationship between the phase evolution mechanisms and crystal growth dynamics of cesium lead bromide halide films.

关键词： all-inorganic perovskite solar cells CsPbBr_(3) inkjet-printing phase evolution

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缸套振动求解及其对活塞裙润滑性能影响分析

四川大学学报（工程科学版） 2014年第4期46卷 167-175页

作者：孟凡明王贤福陈原培重庆大学机械传动国家重点实验室重庆400030

建立了考虑缸套振动的活塞动力学和混合润滑耦合模型,并使用Broyden算法对缸套振动特性进行求解。在综合考虑活塞裙部及缸套的表面粗糙度、弹性变形、接触等因素对活塞裙部润滑性能影响的基础上,使用Broyden算法求解缸套振动特性,并研... 详细信息

建立了考虑缸套振动的活塞动力学和混合润滑耦合模型,并使用Broyden算法对缸套振动特性进行求解。在综合考虑活塞裙部及缸套的表面粗糙度、弹性变形、接触等因素对活塞裙部润滑性能影响的基础上,使用Broyden算法求解缸套振动特性,并研究缸套振动对活塞2阶运动、活塞裙部润滑性能的影响。结果表明:做功冲程缸套的振动位移以及加速度最大,且随着转速的增加,位移响应幅值增大;与不计缸套振动相比,计入缸套振动的活塞2阶运动速度出现剧烈振荡,局部油膜压力幅值以及最小油膜厚度会明显波动,平均摩擦功耗增加。

关键词：缸套振动润滑性能 2阶运动活塞裙 Broyden算法

Advanced rechargeable lithium-ion batteries based on bendable ZnCo2O4-urchins-on-carbon-fibers electrodes

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Nano Research 2013年第7期6卷 525-534页

作者： Bin Liu xianfu Wang Boyang Liu Qiufan Wang Dongsheng Tan Weifeng Song Xiaojuan Hou Di Chen Guozhen Shen State Key Laboratory of Supedattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China Wuhan National Laboratory for Optoelectronics (WNLO) and College of Optical and Electronic Information Huazhong University ofScience and Technology (HUST) Wuhan 430074 China

A novel class of ZnCo2O4-urchins-on-carbon-fibers matrix has been designed, characterized, and used to fabricate high-performance energy storage devices. We obtained a reversible lithium storage capacity of 1180 mA＇h/g even after 100 cycles, demonstrating the highreversible capacity and excellent cycle life of the as-prepared samples. Tested as fast-charging batteries, these electrodes exhibited a considerable capacity of 750 mA＇h/g at an exceptionally high rate of 20 C （18 A/g）, with an excellent cycle life （as long as 100 cycles）, which are the best high-rate results reported at such a high charge^discharge current density for ZnCo2O4-based anode materials in lithium rechargeable batteries. Such attractive properties may be attributed to the unique structure of the binder-free ZnCo2O4-urchins-on-carbon-fibers matrix. Full batteries were also developed by combining the ZnCo2O4 anodes with commercial LiCoO2 cathodes, which showed flexible/wearable and stable features for use as very promising future energy storage units.

关键词： ZnCo2O4-urchins-on- carbon-fibers advanced lithium-ion batteries flexible/wearable features

Study of the Evaluation Model of the Earthquake Influence Field in Yunnan

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Earthquake Research in China 2017年第4期31卷 463-476页

作者： Zhang Fanghao Jiang Feirui Li Yongqiang Bai xianfu Yu Qingkun Earthquake Administration of Yunnan Province Kunming 650224China

In this paper,we conducted a regression analysis of the intensity distribution data of 146 earthquakes( M ≥ 5. 0) which occurred in the period from 1900 to 2014. According to previous research,Yunnan is divided into 3 tectonic regions. Then we use the data of the isoseismic lines in these 3 regions to fit the intensity-attenuation model of each *** there were a few M ≥ 7. 0 earthquakes in this 114-year period,the fitted intensityattenuation model of the strong earthquakes would be random or uncertain. To solve this problem,we introduce the Rupture Scale relationship to limiting our fitted intensityattenuation model of strong earthquakes. We choose the empirical relationship of magnitude and rupture-scale,which was proposed by Li Zhonghua and Qin Jiazheng,to correct the size of the influence field estimated through our intensity-attenuation *** our intensity-attenuation models with the previous ones, we find that in a certain tectonic region,the intensity isoseismals estimated through our model have average minimum error with the real intensity isoseismal decided through field ***,it is more advisable to choose the small-scale zone for the intensity-attenuation evaluation.

关键词： Seismic intensity Evaluation model Rupture length

Innovative Thinking on the Renovation Design of Old Industrial Building Space

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Journal of Civil Engineering and Architecture 2016年第7期10卷 770-776页

作者： Shang xianfu Xu Jie School of Fine Arts Shandong Normal University Ji "nan 250014 P. R. China School of Psychology Shandong Normal University Ji 'nan 250014 P. R. China

The current study investigated the value and significance of the existence of the old industrial buildings, as well as the necessity and difficulty to renovate the design. Combined with successful cases, this study analyzed and showed that one should not only deal with the relationship between the original architectural style and construction of modem cities in the process of renovation design of the old industrial building space. More attention should also be paid to create new space to meet the functional requirements of the modem features, and then complete substantial renovation of old industrial building space through the innovative design. In the use of aesthetic innovative design for the renovation of the old industrial building space, people must respect the space of old industrial buildings as the prerequisite of the renovation design. It is needed to expound the local space reconstruction methods and design principles respectively on the basis of respect. And then one should grasp the whole space and make the structured design and reasonable use according to the new space functional requirements of different functional areas. This paper attempted to learn from environmental art study on the renovation of old industrial buildings space and in terms of innovative design. The authors explored the innovative thinking on the renovation design of old industrial building space through the analysis of the reality.

关键词： Old industrial building space renovation design innovative thinking reality.

Behavioural responses of ex-situ captive hippopotamus (Hippopotamus amphibius) in lactation season: Maternal investment and plasticity of infant self-independence

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Frontiers in Biology 2010年第6期5卷 556-563页

作者： Wei CHEN Mallikarjun PHANDIGUND Jinghua MA Lucia Lopez LOPEZ xianfu ZHANG Department of Evolutionary Ecology and Genetics Zoological InstituteUniversity of KielKiel 24118Germany Ecology Center University of KielKiel 24118Germany Hangzhou Wildlife Park Hangzhou 311422China Breeding Base for State Key Laboratory of Subtropical Forest Cultivation Zhejiang A&F UniversityZhejiang UniversityHangzhou 311300China

In order to promote hippopotamus manage-ment in the captive and ex-situ environment,especially the control of behavioural and physiological status during breeding and lactation seasons,we conducted a prelimin-ary study on behavioural responses of a pair of hippos including both mother and infant in Hangzhou Wildlife Park,*** study of the captive hippos for about 1-month in the lactation season was carried out during August and September,*** behavioural patterns were identiﬁed by all occurrence sampling and instanta-neous scanning sampling methods with 5–10 min *** a result,mother-offspring conﬂicts and interactions did occur throughout the whole study *** maternal investment showed a positive trend in activity rhythms(slope=0.0014,Z=0.3027,P<0.001)and a negative trend(slope=–0.0066,Z=0.8807,P<0.001)in territorial occupation of water,all of which supported our hypotheses that the mother hippo might exert less care for the infant and cut down on her own obligations in *** infant self-independence,during the whole lactation season,the primary trends of activities and territorial occupation dynamics of the infant hippo were slightly different from before,judging from linear models(slope=–0.0017,Z=0.3309,P<0.001).However,the frequencies of activities were not stable,especially at around 12 days of *** trends of territorial occupation(slope=–0.0071,Z=0.904,P<0.001)also showed negative dynamics in water body occupation by the time the infant hippo grew *** general trend(slope=–0.005,Z=0.06,P<0.001)of suckling dynamics was demonstrably negative,with an upwardsﬂuctuation at period 3(10–15th day).This also illustrated that as the infant developed,the dependency on the mother was reduced at the end of the lactation *** addition,a sharp decline between P3 and P4 also supported the mother-offspring conﬂict *** general,time budgets of hippos in active behaviour were(31.8�2.1)%for the mother and(32.1�2.6)%for the ***

关键词： hippopotamus(hippopotamus amphibius) behaviour captive maternal investment infant indepen-dence lactation season zoo