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Advancing climate resilience through a geo-design framework: strengthening urban and community forestry for sustainable environmental design

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Journal of Forestry Research 2024年第6期35卷 356-367页

作者： Xiwei Shen Mingze chen Xiaowei Li shu Gao Qiuyi Yang Yuhan Wen Qingqing sun Department of Landscape Architecture University of NevadaLas VegasNV 89154USA Department of Forest Resources Management Faculty of ForestryUniversity of British ColumbiaVancouverBC V6T 1Z4Canada School of Planning Design and ConstructionMichigan State UniversityEast LansingMI 48823USA Coastal Ecosystem Design Studio Louisiana State UniversityBaton RougeLA 70802USA School of Environment and Sustainability University of MichiganAnn ArborMI 48109USA Department of Sustainable Technology and Built Environment Appalachian State UniversityBooneNC 28608USA

Urban and community forestry is a specialized discipline focused on the meticulous management of trees and forests within urban,suburban,and town *** field often entails extensive civic involvement and collaborative partnerships with *** overarching objectives span a spectrum from preserving water quality,habitat,and biodiversity to mitigating the Urban Heat Island(UHI)*** UHI phenomenon,characterized by notably higher temperatures in urban areas compared to rural counterparts due to heat absorption by urban infrastructure and limited urban forest coverage,serves as a focal point in this *** study focuses on developing a methodological framework that integrates Geographically Weighted Regression(GWR),Random Forest(RF),and Suitability Analysis to assess the Urban Heat Island(UHI)effect across different urban zones,aiming to identify areas with varying levels of UHI *** framework is designed to assist urban planners and designers in understanding the spatial distribution of UHI and identifying areas where urban forestry initiatives can be strategically implemented to mitigate its *** in various London areas,the research provides a comprehensive analysis of the intricate relationship between urban and community forestry and *** mapping the spatial variability of UHI,the framework offers a novel approach to enhancing urban environmental design and advancing urban forestry *** study’s findings are expected to provide valuable insights for urban planners and policymakers,aiding in creating healthier and more livable urban environments through informed decision-making in urban forestry management.

关键词： Urban and community forestry Urban heat island Geographically weighted regression Random forest

Spraying Arginine at 5 Days before Harvest Delays Postharvest Broccoli Senescence via Nutrient Accumulation

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食品科学 2025年第1期46卷 131-141页

作者： sun Yupeng chen Ying SHANG Qingwen GUO Yanyin ZHANG Yuxiao WANG Yunqiao XUE Qingyue College of Agricultural Engineering and Food Science Shandong University of TechnologyZibo 255049China Zichuan District Agricultural and Rural Affairs Service Center Zibo 255049China

To determine the effects of preharvest arginine spraying on the nutritional level of broccoli and the mechanism of action of arginine in improving the storage quality of broccoli,arginine spraying(5 mmol/L)was conducted at 0,1,3,and 5 days before *** appearance,respiration rate,mass-loss rate,electrolyte leakage,glucosinolate,ascorbic acid,total phenol,total flavonoid,total sugar and sucrose contents,and sucrose phosphate synthase(SPS),invertase(INV),sucrose synthase synthesis(SSS)and cleavage(SSC)activities of broccoli samples were observed after 0,2,4,6,8,and 10 days of *** results showed that spraying arginine at 5 days preharvest(5-ARG)helped to inhibit broccoli respiration during storage,delay electrolyte leakage,and maintain broccoli ***,during the growth stage,total sugar accumulation was higher in the 5-ARG *** addition,during the storage period,sucrose synthesis was accelerated,while sucrose cleavage was inhibited,resulting in more sucrose retention in postharvest *** conclusion,5-ARG resulted in the accumulation of more nutrients during the growth process and effectively delayed the quality decline during storage,thereby prolonging the shelf life of ***,this study provides a theoretical basis for improving postharvest storage characteristics of broccoli through preharvest treatments.

关键词： arginine broccoli preharvest spraying nutrient accumulation storage quality postharvest senescence

Carbon-doped surface unsaturated sulfur enriched CoS2@rGO aerogel pseudocapacitive anode and biomass-derived porous carbon cathode for advanced lithium-ion capacitors

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Frontiers of Chemical Science and Engineering 2021年第6期15卷 1500-1513页

作者： Yunpeng Shang Xiaohong sun Zhe chen Kunzhou Xiong Yunmei Zhou shu Cai Chunming Zheng School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjin300072China School of Chemistry and Chemical Engineering State Key Laboratory of Hollow Fiber Membrane Materials and Membrane ProcessesTiangong UniversityTianjin300387China

As a hybrid energy storage device of lithium-ion batteries and supercapacitors,lithium-ion capacitors have the potential to meet the demanding needs of energy storage equipment with both high power and energy *** this work,to solve the obstacle to the application of lithium-ion capacitors,that is,the balancing problem of the electrodes kinetic and capacity,two electrodes are designed and adequately *** the anode,we introduced in situ carbon-doped and surface-enriched unsaturated sulfur into the graphene conductive network to prepare transition metal sulfides,which enhances the performance with a faster lithium-ion diffusion and dominant pseudocapacitive energy ***,the lithium-ion capacitors anode material delivers a remarkable capacity of 810 mAh·g^(−1) after 500 cycles at 1 A·g^(−1).On the other hand,the biomass-derived porous carbon as the cathode also displays a superior capacity of 114.2 mAh·g^(−1) at 0.1 A·g^(−1).Benefitting from the appropriate balance of kinetic and capacity between two electrodes,the lithium-ion capacitors exhibits superior electrochemical *** assembled lithium-ion capacitors demonstrate a high energy density of 132.9 Wh·kg^(−1) at the power density of 265 W·kg^(−1),and 50.0 Wh·kg^(−1) even at 26.5 kW·kg^(−1).After 10000 cycles at 1 A·g^(−1),lithium-ion capacitors still demonstrate the high energy density retention of 81.5%.

关键词： in-situ carbon-doped surface unsaturated sulfur enriched pseudocapacitive energy storage biomass-derived carbon lithium-ion capacitors

Effects of magnetic fluids on crystallization characterizations in a multi-component and multiphase system

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Science China Chemistry 2008年第4期51卷 347-353页

作者： shu BiFen SHEN Hui chen MeiYuan XIA JianHan WANG Xiang sun JianWei Institute for Solar Energy Systems Sun Yat-sen UniversityGuangzhou 510006China

In this study, experiments are carried out on the effects of magnetic fluids on the crystallization char- acterizations in a multi-component and multiphase system, which contains the liquid and the vapor of HCFC141b, water, water vapor, and gas hydrates. The mass transfer phenomena between the phase interfaces of water-HCFC141b and water-vapor are also researched. The experimental results show that in the presence of a rotary magnetic field, magnetic fluids can remarkably enhance the heat and mass transfer between phase interfaces and, therefore, improve the performance of crystallization, especially in improving the formation temperature and velocity.

关键词： magnetic liquid multiphase crystallization characterization heat and mass transfer

Distributed Reduced-order Optimal Fusion Kalman Filters for Stochastic Singular Systems

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自动化学报 2006年第2期32卷 286-290页

作者： sun shu-Li MA Jing Department of Automation Heilongjiang University Harbin 150080

Based on the optimal fusion algorithm weighted by matrices in the linear minimum variance (LMV) sense, a distributed full-order optimal fusion Kalman filter (DFFKF) is given for discrete-time stochastic singular systems with multiple sensors, which involves the inverse of a high-dimension matrix to compute matrix weights. To reduce the computational burden, a distributed reduced-order fusion Kalman filter (DRFKF) is presented, which involves in parallel the inverses of two relatively low-dimension matrices to compute matrix weights. A simulation example shows the effectiveness.

关键词：多传感器信息融合 Kalman滤波随机奇异系统

Application of the improved dung beetle optimizer,muti-head attention and hybrid deep learning algorithms to groundwater depth prediction in the Ningxia area,China

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 18-23页

作者： Jiarui Cai Bo sun Huijun Wang Yi Zheng Siyu Zhou Huixin Li Yanyan Huang Peishu Zong Collaborative Innovation Center on forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjingChina Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) ZhuhaiChina China Meteorological Administration Key Laboratory of Transportation MeteorologyNanjingChina Jiangsu Meteorological Observatory NanjingChina

Due to the lack of accurate data and complex parameterization,the prediction of groundwater depth is a chal-lenge for numerical *** learning can effectively solve this issue and has been proven useful in the prediction of groundwater depth in many *** this study,two new models are applied to the prediction of groundwater depth in the Ningxia area,*** two models combine the improved dung beetle optimizer(DBO)algorithm with two deep learning models:The Multi-head Attention-Convolution Neural Network-Long Short Term Memory networks(MH-CNN-LSTM)and the Multi-head Attention-Convolution Neural Network-Gated Recurrent Unit(MH-CNN-GRU).The models with DBO show better prediction performance,with larger R(correlation coefficient),RPD(residual prediction deviation),and lower RMSE(root-mean-square error).Com-pared with the models with the original DBO,the R and RPD of models with the improved DBO increase by over 1.5%,and the RMSE decreases by over 1.8%,indicating better prediction *** addition,compared with the multiple linear regression model,a traditional statistical model,deep learning models have better prediction performance.

关键词： Groundwater depth Multi-head attention Improved dung beetle optimizer CNN-LSTM CNN-GRU Ningxia

Analysis of Single Nucleotide Polymorphism in Human Paraoxonase 1 Gene(Q192R) with Matrix-assisted Laser Desorption/Ionization Time-of-flight Mass Spectrometry

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Chemical Research in Chinese Universities 2006年第3期22卷 394-396页

作者： sun Ya-dong sun shu-chen WANG Zhi YANG Yang ZHANG Jin Key Laboratory for Molecular Enzymology and Engineering of Educational Ministry Jilin University Changchtm 130021 P. R. China People＇s Hospital of Jilin Province Changchun 130021 P. R. China

Introduction Single nucleotide polymorphisms （SNPs） are the most abundant DNA markers in the human genome occurring at a frequency of one in every 500--1000 nucleotides. A variety of methods have been used for the analysis of single nucleotide polymorphisms, including restriction fragment length polymorphism （RFLP）, direct sequencing by using laser-induced fluorescence detectionTM, fluorescence energy transfer, MALDI-TOF MS combined with primer extension or invasive cleavage, and fluorescence polarization. During the past two decades, mass spectrometry has become a very popular tool in the analysis of biomolecules and is perfectly suited to the analysis of single nucleotide polymorphisms （SNPs） due to its speed, low cost, and accuracy. In this work, we used MALDI TOF mass spectrometry to detect the fragments of restriction endonuclease hydrolysis of PCR products flanking a SNP located at paraoxonase 1（Q192R）. Compared with electrophoresis, this method requires less time of analysis and possess a higher accuracy.

关键词： Single nucleotide polymorphism Human paraoxonase 1 gene Matrix-assisted laser desorption/ionizationtime-of-flight mass spectrometry

Formation of Hearth Sediment during Vanadium Titano-magnetite Smelting in Blast Furnace No.7 of chengde Iron and Steel Company

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Journal of Iron and Steel Research International 2015年第11期22卷 1009-1014页

作者： Xiao-jie LIU Qing Lü shu-jun chen Zhen-feng ZHANG shu-hui ZHANG Yan-qin sun School of Materials and Metallurgy Northeastern University College of Metallurgy and Energy Hebei Key Laboratory for Advanced Metallurgy Technology North China University of Science and Technology chengde Branch Hebei Iron and Steel Group Co. Ltd.

The large quantity of sediment produced in the hearth during vanadium titano-magnetite smelting in a blast furnace（BF） affects the stability of the blast furnace operation. Testing and analysis of the sediment in the hearth of chengde Iron and Steel Company？s BF No.7 revealed that it was mainly concentrated in the location below the tuyere and above the iron notch. Notably, some of the bonding material（sediment） consisted of greater than 50% pig iron, and the pig iron distributed in the slag was granular. It is proposed that a large quantity of Ti C and Ti（C,N） are deposited on the surface of the pig iron. These high melting point materials mix with iron drops, preventing the slag from flowing freely, thus leading to the formation of bonding materials. In addition, the viscosity and melting temperature of the slag in the tuyere areas fluctuate greatly, and thus the properties of the slag are unstable. Moreover, the slag contains large quantities of carbon, which results in the reduction of Ti O2. The resultant precipitation of Ti is followed by the formation of Ti C in the slag, which also leads to an increase in the viscosity of the slag and difficulty in achieving separation of the slag-iron. In fact, all of these factors interact with each other, and as a result, sediment is formed when the operating conditions in the hearth fluctuate.

关键词： vanadium titano-magnetite hearth sediment slag pig iron Ti(N C)

Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy

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Acta Metallurgica Sinica(English Letters) 2020年第12期33卷 1699-1708页

作者： Mao-Kai chen Jun Xie De-Long shu Gui-chen Hou shu-Ling Xun Jin-Jiang Yu Li-Rong Liu Xiao-Feng sun Yi-Zhou Zhou Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Shenyang University of Technology Shenyang 110870China

The effect of long-term thermal exposure on the tensile behavior of a high W content nickel-based superalloy K416B was *** microstructure and the deformation characteristics were observed by scanning electron microscopy and transmission electron microscopy,and the phase transformation of the alloy during long-term thermal exposure was analyzed by X-ray diffraction patterns and differential thermal *** showed that after thermal exposure at 1000℃,the MC carbides in the K416 B alloy decomposed into M_(6)*** tensile deformation,dislocations slipping inγmatrix crossed over the M_(6)C by Orowan bowing *** the increase of thermal exposure time,the secondary M_(6)C reduced greatly the yield strength of the alloy at room ***,the continuous distribution of the secondary M_(6)C with great brittleness in the grain boundary could become the main source of crack,which might change the fracture characteristic of the alloy from trans-granular to intergranular.

关键词： K416B superalloy Thermal exposure Deformation mechanism Fracture characteristics