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Pedotransfer functions for predicting bulk density of coastal soils in East China

Pedosphere 2023年第6期33卷 849-856页

作者： Guanghui ZHENG Caixia JIAO Xianli XIE Xuefeng CUI Gang SHANG chengyi ZHAO Rong ZENG School of Geographic Sciences Nanjing University of Information Science&TechnologyNanjing 210044China Meteorology and Climate Centre School of Mathematics and StatisticsUniversity College DublinBelfieldDublin 4Ireland Institute of Soil Science Chinese Academy of ScienceNanjing 210008China School of Systems Science Beijing Normal UniversityBeijing 100875China

Soil bulk density(BD) is an important physical property and an essential factor for weight-to-volume conversion. However, BD is often missing from soil databases because its direct measurement is labor-intensive, time-consuming, and sometimes impractical, particularly on a large scale. Therefore, pedotransfer functions(PTFs) have been developed over several decades to predict BD. Here, six previously revised PTFs(including five basic functions and stepwise multiple linear regression(SMLR)) and two new PTFs, partial least squares regression(PLSR) and support vector machine regression(SVMR), were used to develop BD-predicting PTFs for coastal soils in East China. Predictor variables included soil organic carbon(SOC) and particle size distribution(PSD). To compare the robustness and reliability of the PTFs used, the calibration and prediction processes were performed 1 000 times using the calibration and validation sets divided by a random sampling algorithm. The results showed that SOC was the most important predictor, and the revised PTFs performed reasonably although only SOC was included. The PSD data were useful for a better prediction of BD, and sand and clay fractions were the second and third most important properties for predicting BD. Compared to the other PTFs, the PLSR was shown to be slightly better for the study area(the average adjusted coefficient of determination for prediction was 0.581). These results suggest that PLSR with SOC and PSD data can be used to fill in the missing BD data in coastal soil databases and provide important information to estimate coastal carbon storage, which will further improve our understanding of sea-land interactions under the conditions of ongoing global warming.

关键词： partial least squares regression particle size distribution soil organic carbon stepwise multiple linear regression support vector machine regression

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Phase equilibrium studies of titanomagnetite and ilmenite smelting slags

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International Journal of Minerals,Metallurgy and Materials 2022年第12期29卷 2162-2171页

作者： Jinfa liao Baojun Zhao International Research Institute for Resources EnergyEnvironment and MaterialsJiangxi University of Science and TechnologyGanzhou 341000China Sustainable Minerals Institute University of QueenslandBrisbaneSaint Lucia 4072Australia

The phase equilibrium information of slag plays an important role in pyrometallurgical processes to obtain optimum fluxing conditions and operating *** smelting reduction of titanomagnetite and ilmenite ores in an iron blast furnace(BF)can form Ti(C,N)particles,causing the increased viscosities of slag and hot *** has been developed in recent years for ironmaking and does not need coke and *** formation of Ti(C,N)in the HIsmelt process is avoided because the oxygen partial pressure in the process is higher than that in the *** smelting of TiO_(2)-containing ores in the HIsmelt process results in Al_(2)O_(3)-MgO-SiO_(2)-CaO-TiO_(2)*** equilibrium in this slag system has been investigated using equilibration,quenching,and electron probe microanalysis *** experimental results were presented in two pseudo-binary sections,which represent the process of HIsmelt for the treatment of 100%titanomagnetite ore and mixed titanomagnetite+ilmenite ore(mass ratio of 2:1),*** primary phases observed in the composition range investigated include pseudo-brookite M_(3)O_(5)(MgO·2TiO_(2)-Al_(2)O_(3)·TiO_(2)),spinel(MgO·Al_(2)O_(3)),perovskite CaTiO_(3),and rutile TiO_(2).The results show that the liquidus temperatures decrease in the TiO_(2)and M_(3)O_(5) primary phase fields and increase in the spinel and CaTiO_(3)primary phase fields with the increase in CaO *** calculation of solid-phase fractions from the experimental data has been *** effect of basicity on the liquidus temperatures of the slag has been *** smelting of titanomagnetite plus ilmenite ores has significant advantages to obtain low-sulfur hot metal and high-TiO_(2)*** determined liquidus temperatures were compared with the FactSage predictions to evaluate the existing thermodynamic databases.

关键词： HIsmelt slag phase equilibrium Al_(2)O_(3)-MgO-SiO_(2)-CaO-TiO_(2)system FactSage

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Optical whispering-gallery mode barcodes for high-precision and wide-range temperature measurements

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Light(Science & Applications) 2021年第2期10卷 278-288页

作者： Jie liao Lan Yang Department of Electrical&Systems Engineering Washington University in St.LouisMO 63130 St.LouisUSA Department of Physics Washington University in St.LouisMO 63130 St.LouisUSA

Temperature is one of the most fundamental physical properties to characterize various physical,chemical,and biological *** a slight change in temperature could have an impact on the status or dynamics of a ***,there is a great need for high-precision and large-dynamic-range temperature *** temperature sensors encounter difficulties in high-precision thermal sensing on the submicron ***,optical whispering-gallery mode(WGM)sensors have shown promise for many sensing applications,such as thermal sensing,magnetic detection,and ***,despite their superior sensitivity,the conventional sensing method for WGM resonators relies on tracking the changes in a single mode,which limits the dynamic range constrained by the laser source that has to be fine-tuned in a timely manner to follow the selected mode during the ***,we cannot derive the actual temperature from the spectrum directly but rather derive a relative temperature ***,we demonstrate an optical WGM barcode technique involving simultaneous monitoring of the patterns of multiple modes that can provide a direct temperature readout from the *** measurement relies on the patterns of multiple modes in the WGM spectrum instead of the changes of a particular *** can provide us with more information than the single-mode spectrum,such as the precise measurement of actual *** the high sensitivity of WGMs and eliminating the need to monitor particular modes,this work lays the foundation for developing a high-performance temperature sensor with not only superior sensitivity but also a broad dynamic range.

关键词： mode high spectrum

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Gold nanoparticle-decorated MoSe_(2) nanosheets as highly effective peroxidase-like nanozymes for total antioxidant capacity assay

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Nano Research 2023年第5期16卷 7180-7186页

作者： chengyi Hong Lingling Chen Jiayi Huang Yunling Shen Hongfen Yang Zhiyong Huang Ren Cai Weihong Tan College of Ocean Food and Biological Engineering Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringJimei UniversityXiamen 361021China Molecular Science and Biomedicine Laboratory State Key Laboratory for Chemo/Bio-Sensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of Biology College of Material Science and EngineeringCollaborative Research Center of Molecular Engineering for TheranosticsHunan UniversityChangsha 410082China University of Texas at Austin AustinTX 78712USA

A visual colorimetric detection strategy is reported for total antioxidant capacity(TAC)assay by using 3,3',5,5'-tetramethylbenzidine(TMB)oxidation as chromogenic substrate based on gold nanoparticle-decorated MoSe_(2) nanosheets(Au@MoSe_(2)).Au@MoSe_(2) nanostructures exhibit high peroxidase-like activity and can catalyze H_(2)O_(2)to oxidize *** on inhibition effect of ascorbic acid(AA)on TMB oxidation,a facile and sensitive colorimetric method was developed for AA *** optimal conditions,the proposed method showed a sensitivity for AA in a concentration range from 2 to 120μM and limit of detection was 0.41μ***,the method was employed for TAC assay in actual samples,including commercial beverages and vitamin C *** work represents a model in nanostructure design and will lead to further development of TAC assay in evaluation of antioxidant food quality.

关键词： nanozymes peroxidase mimics Au@MoSe_(2)nanostructures total antioxidant capacity assay

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以人工智能促进大中小学思政课一体化建设的困境和路径

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卫生职业教育 2025年第2期43卷 17-20页

作者：廖渝刘艳重庆邮电大学马克思主义学院

以人工智能赋能大中小学思政课一体化建设是当前促进思政课信息化、数字化、智能化发展的必然举措。为促进大中小学思政课一体化建设纵深推进，以思政课与人工智能融合发展为切入口，探究其内在逻辑和困境，能够把握工具性和价值性有效... 详细信息

以人工智能赋能大中小学思政课一体化建设是当前促进思政课信息化、数字化、智能化发展的必然举措。为促进大中小学思政课一体化建设纵深推进，以思政课与人工智能融合发展为切入口，探究其内在逻辑和困境，能够把握工具性和价值性有效平衡点，构建一体化教育智能新形态，落实立德树人根本任务。以人工智能促进大中小学思政课一体化建设目前面临技术依赖、工具异化和信息失序等困境，应加强平台建设，确保大中小学思政课一体化建设各环节有效衔接；建设一体化智慧教师队伍，强化教师责任担当；全面整合资源，构建一体化教学体系。

关键词：人工智能大中小学思政课一体化建设困境

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Green synthesis of Au@WSe_(2) hybrid nanostructures with the enhanced peroxidase-like activity for sensitive colorimetric detection of glucose

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Nano Research 2022年第2期15卷 1587-1592页

作者： chengyi Hong Lingling Chen Chenyue Wu Dan Yang Jia-Yong Dai Zhiyong Huang Ren Cai Weihong Tan College of Food and Biological Engineering Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringJimei UniversityXiamen 361021China Molecular Science and Biomedicine Laboratory State Key Laboratory for Chemo/Bio-Sensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of Biology College of Material Science and Engineeringand Collaborative Research Center of Molecular Engineering for TheranosticsHunan UniversityChangsha 410082China RMIT University MelbourneVIC 3000Australia Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province Sir Run Run Shaw HospitalMedical College of Zhejiang UniversityHangzhou 310016China

We report a colorimetric method for glucose detection based on Au nanoparticle-decorated WSe_(2)(Au@WSe_(2))hybrid *** hybrid structures are easily synthesized by simply stirring HAuCl_(4) precursor with WSe_(2) nanosheets in aqueous *** to strong synergistic catalytic effects of Au nanoparticles and WSe_(2) nanosheets,the Au@WSe_(2) hybrid nanostructures exhibit enhanced peroxidase-like activity(about 2-fold higher compared to WSe_(2) nanosheets alone)for 3,3',5,5'-tetramethylbenzidine oxidation by H_(2)O_(2).Based on the highly catalytical property,the colorimetric method for glucose detection is established by coupling glucose oxidase(GOx).The detection limit of glucose is 3.66 ***,the proposed colorimetric method is applicable to glucose detection in serum samples and is promising for applications in biomedical fields.

关键词： Hybrid nanomaterials peroxidase-like activity two-dimensional nanomaterials glucose detection

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NUMERICALLY SOLVING STRONGLY NONLINEAR PROBLEMS BY MEANS OF NO ITERATIONS

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Journal of Hydrodynamics 1998年第1期10卷 102-108页

作者： liao, Shijun Shanghai Jiaotong Univ Shanghai China

Based on the Homotopy Analysis Method, a direct numerical method for strongly nonlinear problems was proposed. The 2-D laminar flow over semi-infinite plate was used. The method can give the accurate enough approximations of a strongly nonlinear problem by means of no iteration and can provide a family of iterative formulas with traditional approaches.

关键词： Iterative methods Laminar flow Nonlinear equations Numerical methods Viscous flow

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Invariant diffusion processes under Lie group actions

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Science China Mathematics 2019年第8期62卷 1493-1510页

作者： Ming liao Department of Mathematics and Statistics Auburn University

We study a decomposition of a diffusion process in a manifold that is invariant under the action of a Lie group. As applications, we consider a diffusion process in a Euclidean space that is invariant under translatio... 详细信息

关键词： diffusion process Lie group Markov process

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Experimental Study on the Treatment of Tertiary Oil Recovery Wastewater via a Novel Electro-Coagulation Method

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Fluid Dynamics & Materials Processing 2023年第1期19卷 51-60页

作者： Wei Cui Zhilun Yan Zhi Tang Mengyao Xu Jian Tian chengyi Shen Petroleum Engineering Technology Research Institute of Sinopec Northwest Oilfield Company Urumchi830011China Key Laboratory of Enhanced Oil Recovery in Carbonate Fractured-Vuggy Reservoirs Urumchi830011China

At present,methods for treating tertiary oil recovery wastewater via electro-coagulation are still in their early stage of *** this study,a device for electro-coagulation wastewater treatment was built and tested in an oil *** effects that the initial pH value,electrode type,and connection mode have on the coagulation and separation effect were assessed by measuring the mass fraction and turbidity of *** results have shown that when the electro-coagulation method is used,the effectiveness of the treatment can be significantly increased in neutral pH conditions(pH=7),in acidic conditions,and in alkaline *** to an Al electrode,the floc that is produced by an Fe electrode is smaller;thus,it does not easily coagulate and settle in a short *** the oil removal rate,turbidity removal rate and energy consumption as a basis to assess the performances,the results have demonstrated that the combined aluminum alloy iron composite electrode should be used as electrolytic electrode.

关键词： Electrocoagulation oily sewage polymer experiment study

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Ternary organic solar cells based on polymer donor,polymer acceptor and PCBM components

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Chinese Chemical Letters 2020年第3期31卷 865-868页

作者： Feng Liu Cheng Li Junyu Li Chao Wang chengyi Xiao Yonggang Wu Weiwei Li College of Chemistry and Environmental Science Hebei UniversityBaoding 071002China State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China DSM DMSC R&D Solutions Geleen 6160 MDthe Netherlands

In this work,ternary organic solar cells(OSCs)combining a fullerene derivative PC71BM with a nonfullerene acceptor N2200-F blended with a polymer donor PM6 were *** with the binary systems,the highest power conversion efficiency(PCE)of 8.11%was achieved in ternary solar cells with 30 wt%N2200-F content,mainly due to the improved short-circuit current density(Jsc)and fill factor(FF).Further studies showed that the improved Jsc could attribute to the complementary abso rption of the two acceptors and the enhanced FF was originated from the higher hole mobility and the fine-tuned morphology in the ternary *** results demonstrate that the combination of fullere ne and nonfullerene acceptors in ternary organic solar cells is a promising approach to achieve high-performance OSCs.

关键词： Ternary organic solar cell Fullerene Non-fullerene Bulk-heterojunction Charge transport

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