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Advances in Climate Change Research 2024年第4期15卷 647-657页

作者： Wen-Ting ZHOU Quan-Lian LI Shi-Chang KANG Xiao-dong wu Tian MA Xiao-Bo wu Xin XIONG Tanuj SHUKLA Maheswar RUPAKHETI dipesh RUPAKHETI da-He QIN Xiu-Feng YIN Cryosphere Research Station on the Qinghai-Tibet Plateau State Key Laboratory of Cryospheric ScienceNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Key Laboratory of Cryospheric Science and Frozen Soil Engineering Norhwest Instiute of Eco-Evironment and ResourcesChinese Academy of Scienes Lanzhou 730000China university of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems and College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou730020China Lushan Botanical Garden Chinese Academy of SciencesJiujiang 332900China Research Institute for Sustainability-Helmholtz Centre Potsdam Potsdam 14467Germany Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China

Climate warming is causing rapid permafrost degradation,including thaw-induced subsidence,potentially resulting in heightened carbon ***,our understanding of the levels and variations of carbon components in permafrost,particularly during the degradation process,remains *** uncertainties arising from this process lead to inaccurate assessments of the climate effects during permafrost *** vast expanses of permafrost in the Tibetan Plateau,there is limited research available on SOC components,particularly in the central Tibetan *** remarkable variations in hydrothermal conditions across different areas of the Tibetan Plateau,the existing limited studies make it challenging to assess the overall SOC components in the permafrost across the Tibetan Plateau and simulate their future *** this study,we examined the properties of soil organic carbon(SOC)and microbial necromass carbon(MicrobialNC)in a representative permafrost thaw-subsidence area at the southern edge of continuous permafrost in the central Tibetan *** results indicate that prior to the thaw-subsidence,the permafrost had a SOC content of 72.68±18.53 mg g^(-1),with MicrobialNC accounting for 49.6%.The thaw-subsidence of permafrost led to a 56.4%reduction in SOC,with MicrobialNC accounting for 70.0%of the lost *** constitutes the primary component of permafrost SOC,and it is the main component that is lost during thaw-subsidence *** in MicrobialNC are primarily correlated with factors ph,plant input,and microbial *** present study holds crucial implications for both the ecological and biogeochemical processes associated with carbon release from permafrost,and it furnishes essential data necessary for modeling the global response of permafrost to climate *** on this study and previous research,permafrost thawing in the Tibetan Plateau causes substantial loss of ***,there's remarkable heterogeneit

关键词： Tibetan Plateau Thaw-subsidence Soil organic carbon Microbial necromass carbon Amino sugars

Eu(III) adsorption on rutile:Batch experiments and modeling

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Science china Chemistry 2010年第12期53卷 2628-2636页

作者： WANG XueFeng,SHI KeLiang,GUO ZhiJun & wu WangSuo Radiochemistry Lab,School of Nuclear Science and Technology,Lanzhou university,Lanzhou 730000,china 1. Radiochemistry Lab School of Nuclear Science and Technology Lanzhou University Lanzhou 730000 China

Eu(III) adsorption on rutile was investigated as a function of contact time,ph,ionic strength and Eu(III) concentration by using a batch experimental *** effects of carbonate,sulfate,and phosphate were also *** was found that the kinetics of Eu(III) adsorption on rutile could be described by a pseudo-second-order *** adsorption of Eu(III) on rutile is strongly ph.d.pendent,but relatively insensitive to ionic strength.A double layer model (dLM) with two inner-sphere Eu(III) surface complexes was applied to quantitatively interpret the adsorption of Eu(III) on *** were no apparent effects of carbonate and sulfate on Eu(III) adsorption,whereas the presence of phosphate promoted Eu(III) adsorption on *** surface complexes of Eu(III) on rutile were evidenced by X-ray photoelectron spectroscopy (XPS).

关键词： Eu(III) adsorption rutile kinetics surface complexation modeling XPS

Surface chemistry considerations of gangue dissolved species in the bastnaesite flotation system

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Fundamental Research 2022年第5期2卷 748-756页

作者： longhua Xu Zhoujie Wang Kaiqian Shu Houqin wu Yuehua Hu Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education Southwest University of Science and TechnologyMianyang 621010SichuanChina State Key Laboratory for Environment-friendly Energy Materials Southwest University of Science and TechnologyMianyang 621010SichuanChina School of Resources Processing and Bioengineering Central South UniversityChangsha 410012HunanChina

Inefficient flotation of bastnaesite remains a challenge in the production of rare earth *** study aimed to investigate the dissolution and adsorption behaviour of species that are commonly released into bastnaesite flotation pulp from Ca/Ba-bearing gangue *** influence and corresponding mechanisms on the bastnaesite mineral surface and collectors,namely sodium oleate(NaOL),were evaluated experimentally based on micro-flotation,zeta potentials,in situ attenuated total reflection Fourier transform infrared spectroscopy(ATRFTIR),and X-Ray photoelectron spectroscopy(XPS)*** flotation recovery of bastnaesite significantly decreased from ~95% to ~25%,~15%,~80%,~25% when exposed to calcite,fluorite,barite,and mixed dissolved species,*** zeta potential of bastnaesite was ph sensitive,indicating that H^(+) and OH^(−)determine the surface potential of *** chemistry analyses revealed that the presence of the dissolved species differed at various ph *** situ ATR-FTIR demonstrated the different effects of the dissolved species from calcite,fluorite,and barite on collector *** former two dissolved species mainly depressed the chemisorption of the NaOL monomers(RCOO^(-)),whereas calcite also affected the physical adsorption of the oleic acid molecular dimer(RCOOH·RCOO^(-)).Moreover,the barite dissolved species only affected the physical adsorption of the NaOL *** results of XPS analysis revealed that dissolved species from these three gangues could pre-adsorbed onto bastnaesite and affected the interaction with the *** functional theory calculations were employed to provide further theoretical insights into the interactions between the dissolved species from calcite,fluorite,and barite and NaOL.

关键词： Bastnaesite dissolved species Flotation Adsorption Calcite

digital twin of a droplet microarray platform:Evaporation behavior for multiple droplets on patterned chips for cell culture

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droplet 2024年第1期3卷 113-124页

作者： Yanchen wu Joaquin E.Urrutia Gomez Hongmin Zhang Fei Wang Pavel A.Levkin Anna A.Popova Britta Nestler Institute for Applied Materials–Microstructure modeling and Simulation Karlsruhe Institute of TechnologyKarlsruheGermany Institute of Nanotechnology Karlsruhe Institute of TechnologyEggenstein‐LeopoldshafenGermany Institute of Biological and Chemical Systems(IBCS‐FMS) Karlsruhe Institute of TechnologyEggenstein‐LeopoldshafenGermany Institute of Organic Chemistry Karlsruhe Institute of TechnologyKarlsruheGermany Institute of digital Materials Science Karlsruhe University of Applied SciencesKarlsruheGermany

Precise control of the evaporation of multiple droplets on patterned surfaces is crucial in many technological applications,such as anti‐icing,coating,and high‐throughput ***,the complex evaporation process of multiple droplets on well‐defined patterned surfaces is still poorly ***,we develop a digital twin system for real‐time monitoring of key processes on a droplet microarray(dMA),which is essential for parallelization and automation of the operations for cell ***,we investigate the evaporation of multiple nanoliter droplets under different conditions via experiments and numerical *** demonstrate that the evaporation rate is not only affected by the environmental humidity and temperature but is also strongly linked to the droplet distribution on the patterned surfaces,being significantly reduced when the droplets are densely ***,we propose a theoretical method to aid in the experimental detection of volumes and ph variation of evaporating droplets on patterned *** versatile and practical strategy allows us to achieve active maneuvering of the collective evaporation of droplets on a dMA,which provides essential implications for a wide range of applications including cell culture,heat management,microreactors,biochips,and so on.

关键词： coating culture collective

Adsorption and desorption characteristics of diphenylarsenicals in two contrasting soils

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Journal of environmental Sciences 2013年第6期25卷 1172-1179页

作者： Anan Wang Shixin Li Ying Teng wuxin Liu longhua wu Haibo Zhang Yujuan Huang Yongming Luo Peter Christie Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil ScienceChinese Academy of Sciences Graduate School of Chinese Academy of Sciences Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Agri-Environment Branch Agri-Food and Biosciences InstituteNewforge LaneBelfast BT9 5PXUK

diphenylarsinic acid （dPAA） is formed during the leakage of aromatic arsenic chemical weapons in soils, is persistent in nature, and results in arsenic contamination in the field. The adsorption and desorption characteristics of dPAA were investigated in two typical Chinese soils, an Acrisol （a variable-charge soil） and a phaeozem （a constant-charge soil）. Their thermodynamics and some of the factors influencing them （i.e., initial ph value, ionic strength and phosphate） were also evaluated using the batch method in order to understand the environmental fate of dPAA in soils. The results indicate that Acrisol had a stronger adsorption capacity for dPAA than phaeozem. Soil dPAA adsorption was a spontaneous and endothermic process and the amount of dPAA adsorbed was affected significantly by variation in soil ph and phosphate. In contrast, soil organic matter and ionic strength had no significant effect on adsorption. This suggests that dPAA adsorption may be due to specific adsorption on soil mineral surfaces. Therefore, monitoring the fate of dPAA in soils is recommended in areas contaminated by leakage from chemical weapons.

关键词： diphenylarsinic acid adsorption and desorption chemical weapons residual soil contamination

distance measurement between two flexible sites in proteins in high viscosity medium at physiological temperature using continuous wave EPR

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Protein & Cell 2014年第5期5卷 334-337页

作者： Lu Yu Wei Wang Shenglong Ling Yao He Liang Xiao Kaiqi wu longhua Zhang Changlin Tian Hefei National Laboratory for physical Science at the Microscale School of Life Science University of Science and Technology of ChinaHefei 230026China High Magnetic Field Laboratory Chinese Academy of SciencesHefei 230031China

dear Editor, Accurate measurement of distances within and between biological macromolecules is important for structure-function studies, for investigating conformational changes and dynamics, and for improving restraints for molecular dynamics and modeling programs （Hellmich and Glaubitz, 2009）. Several methods have been developed to measure the distances between atoms, residues, and domains in single proteins and larger complexes. Fluorescence reso- nance energy transfer （FRET） is currently the most fre- quently used method to derive distances in cells or protein complexes, but the bulky size of the fluorescence probes and the strict requirement for frequency profile overlap between the acceptor and donor chromophores are limita- tions in many cases （Prevo and Peterman, 2014）.

关键词： Electron Paramagnetic Resonance dipolar Coupling physiological Temperature Rotational Correlation Time Pulse Electron Paramagnetic Resonance

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点云驱动的计算机图形学综述

计算机辅助设计与图形学学报 2015年第8期27卷 1341-1353页

作者：伍龙华黄惠中国科学院深圳先进技术研究院深圳518055

点云是分布在三维空间中的离散点集,也是对物体表面信息的离散采样.三维扫描技术的迅速发展使得点云数据的获取更加简单方便,而点云驱动的计算机图形学在逆向工程、数字城市、文物保护、智能机器人等领域日益彰显其广阔的应用前景.文中... 详细信息

点云是分布在三维空间中的离散点集,也是对物体表面信息的离散采样.三维扫描技术的迅速发展使得点云数据的获取更加简单方便,而点云驱动的计算机图形学在逆向工程、数字城市、文物保护、智能机器人等领域日益彰显其广阔的应用前景.文中简要介绍了近年来计算机图形学围绕点云在数据获取、采样处理、渲染表示和几何建模4个方面的主要工作,展示了这一新兴领域的研究现状和发展趋势,并探讨了未来有潜力的研究方向.

关键词：点云三维扫描配准骨架提取渲染曲面重建动态建模

土壤和植物中乙二胺二琥珀酸的反相液相色谱法测定

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分析化学 2006年第10期34卷 1375-1378页

作者：孙小峰吴龙华骆永明中国科学院南京土壤研究所土壤与环境生物修复研究中心中国科学院南京土壤研究所土壤与环境生物修复研究中心南京210008 中国科学院研究生院北京100049

乙二胺二琥珀酸（EddS）可应用于重金属污染土壤的强化植物修复或是土壤淋洗修复。但是现有的检测方法或过于复杂,或检出限太高。本研究建立了应用超声波萃取、硫酸铜衍生化和液相色谱,紫外检测器测定土壤、植物中EddS含量的方法。其回... 详细信息

乙二胺二琥珀酸（EddS）可应用于重金属污染土壤的强化植物修复或是土壤淋洗修复。但是现有的检测方法或过于复杂,或检出限太高。本研究建立了应用超声波萃取、硫酸铜衍生化和液相色谱,紫外检测器测定土壤、植物中EddS含量的方法。其回收率为93%;18%,灵敏度较高;检出限达1.5μmol/L;重现性好,不受其它多种共存离子的干扰。

关键词：乙二胺二琥珀酸衍生化液相色谱法

基于SPA-WOA-SVR的青霉素发酵过程软测量建模方法

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镇江高专学报 2024年第3期37卷 88-93页

作者：吴萍江苏联合职业技术学院靖江中专办学点自动控制系江苏靖江214500 江苏省靖江中等专业学校自动控制系江苏靖江214500

针对青霉素发酵过程中关键参数难以直接在线测量这一工程技术难题提出基于SPA-WOA-SVR的软测量方法。采用连续投影算法(SPA)选取发酵过程辅助变量,以选取的特征辅助变量(CO_(2)浓度η、溶解氧浓度d_(O)、ph值、酸流加速率μ、碱流加速... 详细信息

针对青霉素发酵过程中关键参数难以直接在线测量这一工程技术难题提出基于SPA-WOA-SVR的软测量方法。采用连续投影算法(SPA)选取发酵过程辅助变量,以选取的特征辅助变量(CO_(2)浓度η、溶解氧浓度d_(O)、ph值、酸流加速率μ、碱流加速率l)为输入,以发酵过程关键参数(菌体浓度X、基质浓度S和产物浓度P)为输出,基于支持向量机回归(SVR)建立软测量模型。为提高软测量模型的预测精度和稳定性,采用鲸鱼优化算法(WOA)对模型的重要参数(核函数宽度σ、惩罚因子c和不敏感系数ε)进行寻优。将构建的软测量模型应用于青霉素发酵过程关键参数预测,仿真结果表明,与传统SVR软测量建模方法相比,采用SPA-WOA-SVR软测量方法,关键参数X、S、P测试集中的决定系数R^(2)均在0.953 3以上,均方根误差R_(MSE)均小于0.029 3,特别是菌体浓度R^(2)由0.904 4提升到0.987 9,R_(MSE)由0.031 4下降为0.009 8,说明基于SPA-WOA-SVR的软测量建模方法有效提升了模型的预测性能,具有更高的预测精度和稳定性,可推广应用于一般非线性系统的软传感器建模。

关键词：青霉素发酵连续投影算法(SPA) 鲸鱼优化算法(WOA) 软测量