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Optimized Decision Tree and Black Box Learners for Revealing Genetic Causes of Bladder cancer

Intelligent Automation & Soft Computing 2023年第7期37卷 49-71页

作者： Sait can Yucebas Computer Engineering Department Canakkale Onsekiz Mart UniversityCanakkale17100Turkey

The number of studies in the literature that diagnose cancer with machine learning using genome data is quite *** studies focus on the prediction performance,and the extraction of genomic factors that cause disease is often ***,finding underlying genetic causes is very important in terms of early diagnosis,development of diagnostic kits,preventive medicine,*** motivation of our study was to diagnose bladder cancer(BCa)based on genetic data and to reveal underlying genetic factors by using machine-learning *** addition,conducting hyper-parameter optimization to get the best performance from different models,which is overlooked in most studies,was another objective of the *** the framework of these motivations,C4.5,random forest(RF),artificial neural networks(ANN),and deep learning(DL)were *** this way,the diagnostic performance of decision tree(DT)-based models and black box models on BCa was also *** most successful model,DL,yielded an area under the curve(AUC)of 0.985 and a mean square error(MSE)of *** each model,hyper-parameters were optimized by an evolutionary *** average,hyper-parameter optimization increased MSE,root mean square error(RMSE),LogLoss,and AUC by 30%,17.5%,13%,and 6.75%,*** features causing BCa were *** this purpose,entropy and Gini coefficients were used for DT-based methods,and the Gedeon variable importance was used for black box *** single nucleotide polymorphisms(SNPs)rs197412,rs2275928,rs12479919,rs798766 and rs2275928,whose BCa relations were proven in the literature,were found to be closely related to *** addition,rs1994624 and rs2241766 susceptibility loci were proposed to be examined in future studies.

关键词： Random forest neural network deep learning hyper-parameter optimization bladder cancer single nucleotide polymorphism

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Experimental investigation of hydrodynamics of liquid-solid mini-fluidized beds

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Particuology 2016年第4期14卷 102-109页

作者： can Tang Mingyan Liu Yanjun Li Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) School of Chemical Engineering and Technology Tionjin University Tianjin 300072 China State Key Laboratory of Chemical Engineering (Tianjin University) Tianjin 300072 China

Expanded fluidization behavior in liquid-solid mini-fluidized beds （MFBs） was experimentally investigated using visual measurements. Wall effects in the liquid-solid MFBs were identified and explained. The measured incipient]minimum fluidization liquid velocity （Umf） in the MFBs was 1.67 to 5.25 times higher than that calculated using the Ergun equation when the ratio of solid particle diameter to bed diameter varied from 0.017 to 0.091. The ratio of the Richardson-Zaki （R-Z） exponent obtained by fitting with experimental data to that calculated using the R-Z correlation varied from 0.92 to 0.55. A wider solid particle size distribution resulted in a smaller R-Z exponent. The influence of the solid particle material on Umf and R-Z exponent was negligible.

关键词： Liquid-solid fluidization Mini-fluidized bed Expansion bed Wall effect Particle size distribution

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Local Discontinuous Galerkin Scheme for Space Fractional Allen–Cahn Equation

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Communications on Applied Mathematics and Computation 2020年第1期2卷 73-91页

作者： can Li Shuming Liu College of Sciences Xi’an University of TechnologyXi’an 710048China

This paper is concerned with the efficient numerical solution for a space fractional Allen–Cahn(AC)*** on the features of the fractional derivative,we design and analyze a semi-discrete local discontinuous Galerkin(LDG)scheme for the initial-boundary problem of the space fractional AC *** prove the optimal convergence rates of the semi-discrete LDG approximation for smooth ***,we test the accuracy and efficiency of the designed numerical scheme on a uniform grid by three *** simulations show that the space fractional AC equation displays abundant dynamical behaviors.

关键词： Fractional Allen-Cahn equation Local discontinuous Galerkin scheme Error estimates

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Adjoint-Based Geometrically Constrained Aerodynamic Optimization of a Transonic Compressor Stage

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Journal of Thermal Science 2019年第5期28卷 850-861页

作者： SU Xinrong MA can YUAN Xin Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Tsinghua University Beijing 100084 China Science and Technology on Thermal Energy and Power Laboratory Wuhan 430205 China

Efficient method to handle the geometric constraints in the optimization of turbomachinery blade profile is required. Without constraints on the blade thickness, optimal designs typically yield thinner blade to reduce the friction loss, however, at the risk of degraded strength and stiffness. This issue is seldom discussed and existing literature always treat the blade thickness constraint in an indirect manner. In this work, two different geometric constraints on the blade thickness are proposed and applied in the adjoint optimization: one is on the maximum blade thickness and the other is on the blade area. Methods to compute sensitivities of both constraints are proposed and they are integrated into an optimization system based on a finite volume code and a solver for the discrete adjoint equation. Adjoint optimization is conducted to minimize the entropy production in a transonic compressor stage. Results for the adjoint optimization without geometry constraint and two comparative cases are detailed. It is indicated that three cases yield similar performance improvement;however, if geometry constraints are properly handled, the optimal designs have almost the same maximum thickness as the original design, compared to a thinner blade profile with 14% reduction of maximum thickness in the case without geometry constraint. The cases considering geometry constraints also consume slightly reduced Central Processing Unit(CPU) cost. Result of this work verifies the effectiveness of the proposed method to treat geometric constraints in adjoint optimization.

关键词： aerodynamic optimization compressor stage discrete adjoint method geometric constraint

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Encapsulation of lipases on coordination polymers and their catalytic performance in glycerolysis and esterification

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Grain & Oil Science and Technology 2023年第3期6卷 113-119页

作者： can Zeng Nanjing Zhong School of Food Science Guangdong Pharmaceutical UniversityZhongshan 528458China

In this study,lipases of CALB(candida antarctica lipase B),TLL(Thermomyces lanuginosa lipase),RML(Rhizomucor miehei lipase),CALA(candida antarctica lipase A)and LU(Lecitase?Ultra)were encapsulated into the nucleotidehybrid metal coordination polymers(CPs)for diacylglyerols(DAG)*** 5'-monophosphate(GMP)and adenosine 5'-monophosphate(AMP)were used as coordinating molecules,and metal ions of Fe^(3+),Ba^(2+),Mn^(2+),Ni^(2+)and Cr^(3+)were applied to prepare *** indicated that,besides Ba^(2+)with AMP,all other metal ions can coordinate with AMP and GMP to generate *** addition,the AMP/Ni was amorphous when standing temperature was 4℃,while it was crystalline when standing temperature was from 30 to 180℃.DAG content from 47.55%to 64.99%was obtained from glycerolysis by CALB@GMP/Ba,RML@GMP/Ba,TLL@GMP/Ba,RML@GMP/Mn and TLL@GMP/***,CALB@GMP/Fe showed selectivity towards DAG formation in the esterification and DAG content up to 61.88%was obtained.

关键词： Lipase Coordination polymers Encapsulation Glycerolysis Esterification

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Synthesis and hydrogen desorption kinetics of Mg_(2)FeH_(6)-and Mg_(2)CoH_(5)-based composites with in situ formed YH_(3)and Mg_(2)NiH_4 nanoparticles

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Rare Metals 2023年第7期42卷 2335-2343页

作者： can Li Zhi-Wen Wu Qing-An Zhang School of Materials Science and Engineering Anhui University of TechnologyMaanshan243002China

Mg_(2)FeH_(6)-and Mg_(2)CoH_(5)-based composites with in situ formed YH_(3)and Mg_(2)NiH_4 nanoparticles were synthesized by ball milling of Mg_(10)YNi+4Fe(in mole ratio)and Mg_(10)YNi+4Co powders,respectively,at4 MPa H_(2)followed by hydrogenation at 673 K for 60 h under a hydrogen pressure of 7 *** is found that the nanocrystalline YH_(3)and Mg_(2)NiH_4 particles are indeed embedded in Mg_(2)FeH_(6)and Mg_(2)CoH_(5)*** hydrogen desorption rates of Mg_(2)FeH_(6)-and Mg_(2)CoH_(5)-based composites are enhanced compared to those undoped Mg_(2)FeH_(6)and Mg_(2)CoH_(5)hydrides,respectively,due to the synergetic catalysis of nanosized YH_(3)and Mg_(2)NiH_4 *** finding provides us with an efficient and simple approach for the improvement in hydrogen desorption kinetics of Mg-based hydrogen storage materials.

关键词： Hydrogen storage Mg-based hydride Kinetics Catalytic effect

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Effect of sodium starch octenyl succinate-based Pickering emulsion on the physicochemical properties of hairtail myofibrillar protein gel subjected to multiple freeze-thaw cycles

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Food Science and Human Wellness 2024年第2期13卷 1018-1028页

作者： Huinan Wang Jiaxin Zhang Xinran Liu jinxiang Wang Xuepeng Li Jianrong Li Key Laboratory of Food Nutrition and Safety Ministry of EducationCollege of Food Science and EngineeringTianjin University of Science and TechnologyTianjin 300457China College of Food Science and Technology Bohai UniversityNational R&D Branch Center of Surimi and Surimi Products ProcessingJinzhou 121013China

A Pickering emulsion based on sodium starch octenyl succinate(SSOS)was prepared and its effects on the physicochemical properties of hairtail myofibrillar protein gels(MPGs)subjected to multiple freeze-thaw(F-T)cycles were *** whiteness,water-holding capacity,storage modulus(G')and texture properties of the MPGs were significantly improved by adding 1%-2%Pickering emulsion(Pcan enhance the gel properties and the F-T stability of MPGs.

关键词： Pickering emulsion Myofibrillar protein Gel properties Freeze-thaw stability Intermolecular interactions

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Photocatalysis in solar fuel production

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National Science Review 2015年第2期2卷 145-147页

作者： Hongxian Han can Li State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences and Dalian National Laboratory for Clean Energy

With the increasing concerns on energy and environmental problems caused by the combustion of fossil fuels,solar energy becomes vitally important because it is the only viable renewable energy source that can replace ... 详细信息

关键词： PSP

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Enhanced ortho-selective t–butylation of phenol over sulfonic acid functionalized mesopore MTW zeolites

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Chinese Journal of Chemical Engineering 2023年第8期60卷 1-7页

作者： Baoyu Liu Feng Xiong Jianwen Zhang Manna Wang Yi Huang Yanxiong Fang jinxiang Dong School of Chemical Engineering and Light Industry Guangdong Provincial Key Laboratory of Plant Resources BiorefineryGuangzhou Key Laboratory of Clean Transportation Energy ChemistryGuangdong University of TechnologyGuangzhou 510006China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China School of Engineering Institute for Materials&ProcessesThe University of EdinburghRobert Stevenson RoadEdinburgh EH93FBUnited Kingdom

Novel organo-inorganic hybrid materials(MTW-x-SO_(3)H) have been fabricated by immobilizing 3-mercap topropyltriethoxysilane onto mesopore MTW zeolites, which is treated via a simple oxidation process with hydrogen peroxide as the oxidant to transform sulfhydryl group into sulfonic acid group. The organic sulfhydryl groups are covalently bonded to the external surface of MTW zeolites through the condensation between siloxane arising from organic fragments with silanol groups on the surface of MTW zeolites, the hybrids contain sulfonic acid group within the external surface of MTW zeolites and an opened mesoporous system in the matrix of MTW zeolites, which provide enough accessible Brùnsted acid sites for the alkylation between phenol with tert-butyl alcohol. Through this methodology it's possible to prepare multifunctional materials where the plenty of mesopores are benefit for the introduction of larger numbers of sulfonic acid groups that contributes to activity during reactions, resulting in high activity(>55%) of MTW-4-SO_(3)H and desired selectivity(>56%) of 2-TBP(2-tert-butyl phenol) in the alkylation between phenol with tert-butyl alcohol.

关键词： MTW Zeolites Acidity Catalysis Alkylation

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Dynamic properties of the two-dimensional density-driven segregation

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Communications in Theoretical Physics 2020年第7期72卷 111-115页

作者： Yao-Dong Feng can-can Liu Qing-Fan Shi Gang Sun Department of Physics Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory for Nanomaterials and Nanodevices Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China

We discuss some dynamic properties of the segregation in vertically vibrated binary granular mixtures with the same *** present a method that can accurately calculate the order parameter in the *** use of the time evolution of the order parameter,we have found that the convergence of the segregated state depends at least on the vibration amplitude,the total mass of the particles,and also the density difference between the lighter and heavier *** convergence is quicker for larger vibration amplitude,lighter total mass of the particles and more density difference between the lighter and heavier *** have also found that thefluctuation is larger even after the steady state is reached for lighter total mass of the particles and less density difference between the lighter and heavier particles.

关键词： granular matter segregation effect molecular dynamic simulation

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