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Geo-Spatial Information Science 2020年第3期23卷 237-247,I0004页

作者： Jing Geng Wenxia Gan Jinying Xu Ruqin yang shuliang Wang School of Computer Science and Technology Beijing Institute of TechnologyBeijingChina Beijing Institute of Technology BeijingChina School of Civil Engineering and Architecture Wuhan Institute of TechnologyWuhanChina Wuhan Natural Resources and Planning Information Center WuhanChina

Radiometric normalization,as an essential step for multi-source and multi-temporal data processing,has received critical attention.Relative Radiometric Normalization(RRN)method has been primarily used for eliminating the radiometric inconsistency.The radiometric trans-forming relation between the subject image and the reference image is an essential aspect of RRN.Aimed at accurate radiometric transforming relation modeling,the learning-based nonlinear regression method,Support Vector machine Regression(SVR)is used for fitting the complicated radiometric transforming relation for the coarse-resolution data-referenced RRN.To evaluate the effectiveness of the proposed method,a series of experiments are performed,including two synthetic data experiments and one real data experiment.And the proposed method is compared with other methods that use linear regression,Artificial Neural Network(ANN)or Random Forest(RF)for radiometric transforming relation modeling.The results show that the proposed method performs well on fitting the radiometric transforming relation and could enhance the RRN performance.

关键词： Support Vector machine Regression(SVR) non-linear radiometric transforming relation Relative Radiometric Normalization(RRN) multi-source data

Highly Flexible and Broad‑Range Mechanically Tunable All‑Wood Hydrogels with Nanoscale Channels via the Hofmeister Effect for Human Motion Monitoring

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Nano-Micro Letters 2022年第5期14卷 192-205页

作者： Guihua Yan Shuaiming He Gaofeng Chen Sen Ma Anqi Zeng Binglin Chen Shuliang Yang Xing Tang Yong Sun Feng Xu Lu Lin Xianhai Zeng College of Energy Xiamen UniversityXiamen 361102People’s Republic of China State Key Laboratory of Pulp and Paper‑Making Engineering South China University of TechnologyGuangzhou 510640People’s Republic of China Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry UniversityNo.35Tsinghua East RoadHaidianBeijing 100083People’s Republic of China

Wood-based hydrogel with a unique anisotropic structure is an attractive soft material,but the presence of rigid crystalline cellulose in natural wood makes the hydrogel less flexible.In this study,an all-wood hydrogel was constructed by cross-linking cellulose fibers,polyvinyl alcohol(PVA)chains,and lignin molecules through the Hofmeister effect.The all-wood hydrogel shows a high tensile strength of 36.5 MPa and a strain up to~438%in the longitudinal direction,which is much higher than its tensile strength(~2.6 MPa)and strain(~198%)in the radial direction,respectively.The high mechanical strength of all-wood hydrogels is mainly attributed to the strong hydrogen bonding,physical entanglement,and van der Waals forces between lignin molecules,cellulose nanofibers,and PVA chains.Thanks to its excellent flexibility,good conductivity,and sensitivity,the all-wood hydrogel can accurately distinguish diverse macroscale or subtle human movements,including finger flexion,pulse,and swallowing behavior.In particular,when“An Qi”was called four times within 15 s,two variations of the pronunciation could be identified.With recyclable,biodegradable,and adjustable mechanical properties,the all-wood hydrogel is a multifunctional soft material with promising applications,such as human motion monitoring,tissue engineering,and robotics materials.

关键词： Wood hydrogel Hofmeister effect Tunable mechanical strength Flexible Biodegradable

A Hybrid Aspect Based Latent Factor Model for Recommendation

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Chinese Journal of Electronics 2020年第3期29卷 482-490页

作者： YUAN Hanning CHEN Zhengyu yang Jingting WANG shuliang GENG Jing KE Chuwen School of Computer Science & Technology Beijing Institute of Technology

Recommender system has been recognized as a superior way for solving personal information overload problem. More and more aspect-based models are leveraging user ratings and extracting information from review texts to support recommendation. Aspect-based latent factor model predicts user ratings relying on latent aspect inferred from user reviews. It usually constructs only a single global model for all users, which may be not sufficient to capture the diversity of users’ preferences and leave some items or users be badly modeled. We propose a Hybrid aspect-based latent factor model(HALFM),which jointly optimizes the Global aspect-based latent factor model(GALFM) and the Local Aspect-based Latent Factor Models(LALFM), their user-specific combination,and the assignment of users to the LALFMs. HALFM makes prediction by combining user-specific of GALFM and many LALFMs. Experimental results demonstrate that the proposed HALFM outperforms most of aspectbased recommendation techniques in rating prediction.

关键词： Recommender systems Latent factor model Review aspect

Mesoporous poly(ionic liquid)s with dual active sites for highly efficient CO_(2)conversion

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Green Energy & Environment 2023年第2期8卷 478-486页

作者： Yawen Fu Yanan Xu Zepeng Zeng Abdul-Rauf Ibrahim Jin yang Shuliang Yang Yaqiang Xie Yanzhen Hong Yuzhong Su Hongtao Wang Yanliang Wang Li Peng Jun Li Wendy L.Queen College of Chemistry and Chemical Engineering Xiamen UniversityXiamen361005China Mechanical Engineering Department Tamale Technical UniversityTamaleGhana College of Energy Xiamen UniversityXiamen361102China National Engineering Laboratory for Green Chemical Productions of Alcohols Ethers and EstersXiamen UniversityXiamen361005China Collaborative Innovation Center of Chemistry for Energy Materials Xiamen361005China Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne(EPFL)EPFL-ISIC-ValaisSionSwitzerland

Atmospheric CO_(2)concentrations are soaring due to the continued use of fossil fuels in energy production,an anthropogenic activity that is playing a leading role in global warming.Thus,research aimed at the capture and conversion of CO_(2)into value-added products,such as cyclic carbonates,is booming.While CO_(2)is an abundant,cheap,non-toxic,and readily accessible Cl feedstock,its thermodynamic stability necessitates the development of highly efficient catalysts that are able to promote chemical reactions under mild conditions.In this work,a novel mesoporous poly(ionic liquid)with dual active sites was synthesized through a facile method that involves co-polymerization,post-synthetic metalation,and supercritical CO_(2)drying.Due to a high density of nucleophilic and electrophilic sites,the as-prepared poly(ionic liquid),denoted as P2D-4BrBQA-Zn,offers excellent performance in a CO_(2)cycloaddition reaction using epichlorohydrin as the substrate(98.9%conversion and 96.9%selectivity).Moreover the reaction is carried out under mild,solvent-free,and additive-free conditions.Notably,P2D-4BrBQA-Zn also efficiently promotes the conversion of various other epoxide substrates into cyclic carbonates.Overall,the catalyst is found to have excellent substrate compatibility,stability,and recyclability.

关键词： Mesoporous poly(ionic liquid) Nucleophile/electrophilic sites Carbon dioxide cycloaddition Heterogeneous catalysis Supercritical CO_(2)drying

One-pot synthesis of 2,5-bis(hydroxymethyl)furan from biomass derived 5-(chloromethyl)furfural in high yield

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Journal of Energy Chemistry 2023年第1期76卷 421-428,I0011页

作者： Binglin Chen Yunchao Feng Sen Ma Weizhen Xie Guihua Yan Zheng Li Jonathan Sperry Shuliang Yang Xing Tang Yong Sun Lu Lin Xianhai Zeng College of Energy Xiamen UniversityXiamen 361102FujianChina Fujian Engineering and Research Centre of Clean and High-valued Technologies for Biomass Xiamen Key Laboratory of Clean and High-valued Utilization for BiomassXiamen 361102FujianChina Centre for Green Chemical Science University of AucklandAuckland 1142New Zealand

5-(Chloromethyl)furfural(CMF),as a new platform molecular,has become a hot topic in the field of biorefinery.Herein,the one-pot conversion of CMF to 2,5-bis(hydroxymethyl)furan(BHMF)in the water phase was demonstrated for the first time.A 91%BHMF yield was obtained over Ru/Cu Oxcatalyst,and BHMF was mainly produced by the consecutive hydrolysis and hydrogenation of CMF with 5-hydroxymethylfurfural(HMF)as an intermediate.Kinetic studies revealed that the conversion of HMF to BHMF was the rate-determining step.Remarkably,the characterizations and density functional theory(DFT)calculations further revealed the lower electron density of Ru NPs in Ru/Cu Oxcatalyst,resulting in a larger adsorption energy and a smaller free energy difference for the formation of alcohols.The present findings offered a new pathway for biomass-derived diol production through CMF as a potential source.

关键词： 2 5-Bis(hydroxymethyl)furan Hydrolysis Hydrogenation Biomass conversion Heterogeneous catalysis

Base-free oxidative esterification of 5-hydroxymethylfurfural to furan-2,5-dimethylcarboxylate over n-doped carbon-supported Co/Fe bimetallic catalyst under batch-operation or continuous-flow conditions

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Journal of Energy Chemistry 2022年第12期75卷 95-108,I0004页

作者： Weizhen Xie Binglin Chen Wenlong Jia Huai Liu Zheng Li Shuliang Yang Xing Tang Xianhai Zeng Yong Sun Xixian Ke Tianyuan Li Huayu Fang Lu Lin Xiamen Key Laboratory of Clean and High-valued Applications for Biomass Fujian Engineering and Research Center of Clean and High-valued Technologies for BiomassCollege of EnergyXiamen UniversityXiamen 361102FujianChina BiomassChem Group Faculty of Chemical EngineeringKunming University of Science and TechnologyKunming 650500YunnanChina Key Lab for Sport Shoes Upper Materials of Fujian Province Fujian Engineering and Research Center for New Functional Fiber Materials(Fujian Huafeng New Material Co.Ltd.Putian Dakai New Material Co.Ltd.)Putian 351144FujianChina

Developing an efficient and easily available catalyst for the selective conversion of biomass-derived 5-hydroxymethylfurfural(HMF)into furan-2,5-dimethylcarboxylate(FDMC),a valuable biomass-based monomer,remains a high demand but formidable challenge.Herein,a facile strategy for the synthesis of N-doped carbon-supported Co/Fe bimetallic catalyst(CoFe-NC)was developed,which provided an outstanding FDMC yield of 93%in a batch reactor(base-free,80℃,2 bar O_(2),4 h).Interestingly,CoFe-NC also gave a high FDMC yield of 91%under continuous-flow conditions for 80 h(5 bar O_(2),80℃,GHSV 1320 h^(-1),LHSV 0.6 h^(-1),base-free).Notably,it is the first time that a non-noble catalyst gave such a high FDMC yield under continuous-flow conditions.The introduction of Fe could greatly improve both the electron intensity of Co-N_(x)species and basicity of the catalyst,which endowed CoFe-NC with improved O_(2)activation capacity and enhanced dehydrogenation activity for the oxidation-esterification of HMF.This work delineates the efficient strategy on the construction of N-doped carbon-supported non-noble catalyst,which might open a new avenue for developing highly efficient catalyst for FDMC production.

关键词： 5-Hydroxymethylfurfural Furan-2,5-dimethylcarboxylate Oxidation-esterification Catalysis Co-N_(x)sites

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用于高效催化的纳米结构设计（英文）

用于高效催化的纳米结构设计（英文）

A MOF/poly(thioctic acid)composite for enhanced gold extraction from water matrices

中国化学会第30届学术年会-第三十六分会：纳米材料合成...

作者： Weiguo Song Shuliang Yang Changyan Cao Institute of Chemistry Chinese Academy of Sciences

Dispersion ＆ Stabilization of active sites, facile mass transportation, and efficient mixing of the reactants are three key aspects of catalysis. With well controlled nanostructures, there three goals can be met. During recent years, we developed in situ deduction methods to ensure high dispersion of noble metal nanoparticles on various supports, and used a embedment method to physically stabilize the metal nanoparticles. With core/shell structure, in which the shell is nanoporous while the core are loaded with active nanoparticles as well as void spaces, diffusion of reaction species can be controlled, so that the activity and the selectivity of the catalysts are enhanced. One particular advantage of such core/shell structures is shape selectivity. Another advantage is high active carbocatalysts with suited heteroatom doping. In practical applications, high performance catalysts were produced for fine chemical production.

关键词： Core shell Carbocatalysts Hydrogenation Nano Stirrer

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Nano Research 2024年第1期17卷 382-389页

作者： Ruiqing Li Sen Yan Tianwei Xue Rongxing Qiu Yin Li Wenli Hao Guangkuo Xu Yanliang Wang Yanzhen Hong Yuzhong Su Hongtao Wang Shuliang Yang Li Peng Jun Li College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China College of Energy Xiamen UniversityXiamen 361005China National Engineering Laboratory for Green Chemical Productions of Alcohols Ethers and EstersXiamen UniversityXiamen 361005China Collaborative Innovation Center of Chemistry for Energy Materials Xiamen UniversityXiamen 361005China

With the fast generation of electronic waste(e-waste)and the increasing depletion of metal resources,“urban mining”that can selectively recover gold from secondary resources has attracted great interest.Construction of materials with high extraction capacity and satisfying selectivity in complex aqueous-based matrices still remains challenging.Here,a novel metal-organic framework/polymer composite(Fe-BTC/poly(thioctic acid),denoted as Fe-BTC/pTA)has been newly synthesized and applied for selective gold recovery in different matrices(river water,seawater,and leaching solution of e-waste).Benefiting from the high specific surface area and suitable pore sizes as well as the rational design of active sites,the composite exhibits high adsorption capacity(920 mg/g),high removal efficiency(>99%),fast kinetics(below 0.1 ppb within 10 min),and good applicability in complex matrices,which are better than those of most reported sulfur-containing adsorbents.Solid-state metallic gold with high purity can be effectively enriched due to the high recyclability and long-term stability of the composite.The material after adsorption can be further applied as a heterogeneous catalyst for water remediation due to the in situ generated gold nanoparticles by the redox reaction between Au(III)ions and the S-containing groups in the composites.

关键词： metal-organic frameworks(MOFs) poly(thioctic acid)(pTA) polymer composites gold recovery urban mining

Co-NC as adsorbent and matrix providing the ability of MALDI MS to analyze volatile compounds

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Chinese Chemical Letters 2021年第1期32卷 62-65页

作者： Shumu Li Jian’an Liu Jiping Sun Zhenpeng Wang Kai Wang Lei Guo Shuliang Yang Jinchao Wei Xiangjun Zheng Zhenwen Zhao Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsInstitute of ChemistryChinese Academy of SciencesBeijing Mass Spectrum CenterBeijing 100190China Graduate School University of Chinese Academy of SciencesBeijing 100049China Beijing Key Laboratory of Energy Conversion and Storage Materials College of ChemistryBeijing Normal UniversityBeijing 100875China State Key Laboratory of Toxicology and Medical Countermeasures and Laboratory of Toxicant AnalysisAcademy of Military Medical SciencesBeijing 100850China

Traditional matrix does not allow matrix-assisted laser desorption/ionization mass spectrometry(MALDI MS) to analyze volatile compounds,because volatile analytes may vaporize during the sample preparation process or in the high vacuum circumstance of ion source.Herein,we reported a Co and N doped porous carbon material(Co-NC) which were synthesized by pyrolysis of a Schiff base coordination compound.Co-NC could simultaneously act as adsorbent of volatile compounds and as matrix of MALDI MS,to provide the capability of MALDI MS to analyze volatile compounds.As adsorbent,Co-NC could stro ngly adsorb and enrich the volatile compounds in perfume and herbs,and hold them even in the high vacuum circumstance.On the other hand,Co-NC could absorb the energy of the laser,and then transfer the energy to the analyte for desorption and ionization of analyte in both negative and positive ionization modes.Additionally,the background interferences were avoided in the low-mass region(<500 Da) when using Co-NC as matrix,overcoming the challenges of MALDI MS analysis of small molecule compounds.In summary,Co-NC as matrix tremendously extended the application of MALDI MS.

关键词： MALDI MS Volatile compounds Matrix Co-NC Adsorbent

Effects of land-use and climate change on sediment and nutrient retention in Guizhou,China

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Ecosystem Health and Sustainability 2020年第1期6卷 185-197,184页

作者： Huiqing Han Jianqiang yang Geng Ma Yue Liu Linan Zhang Siying Chen shuliang Ma School of Architecture and Urban Planning Guizhou Institute of TechnologyGuiyangPR China School of Economics and Management Guizhou Institute of TechnologyGuiyangPR China

Introduction:Sediment and nutrient retention have significant impacts on agricultural productivity and water quality.Obvious changes of climate and land-use have deeply affected freshwater ecosystem services in the last several decades.Nevertheless,it is unclear what the differences are in the impact of climate and land-use changes on freshwater ecosystem services.Outcomes:The impacts of climate and land-use change on sediment and nutrient retention(two essential freshwater ecosystem services)were evaluated with the help of the Integrated Valuation of Environmental Services and Tradeoffs(InVEST)model.The results from the study area suggest a decreasing trend in sediment and nutrient retention from 1995 to 2015 when climate and land-use were changed simultaneously.A decreasing trend in sediment retention and an increasing trend in nutrient retention were presented under scenario A(climate change from 1995 to 2015 with land-use unchanged),while the sediment exported and nutrient retention exhibited a decreasing trend except sediment retained under scenario B(land-use change from 1995 to 2015 with unchanged climate).Rainfall erosivity and soil erodibility were more sensitive to the output of sediment retention,while retention efficiency produced more of an effect on nutrient retention.Discussion and Conclusion:Climate change played a dominant role in the change in sediment retention,while land-use change had a more significant effect on nutrient retention change than climate change.The results of this study provide explicitinformation for land-use managers to reduce the negative effects associated with sediment and nutrient retention.

关键词： Climate change land-use change InVEST model nutrient retention scenario analysis sediment retention