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using deep neural.networks coupl.d with principal.component anal.sis for ore production forecasting at open-pit mines

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Journal.of Rock Mechanics and Geotechnical.Engineering 2024年第3期16卷 727-740页

作者： Chengkai Fan na Zhang Bei Jiang Wei Victor l.u Department of Civil.and Environmental.Engineering University of AlbertaEdmontonAlbertaT6G 2E3Canada Department of Mathematical.and Statistical.Sciences University of AlbertaEdmontonAlbertaT6G 2G1Canada

Ore production is usual.y affected by mul.ipl. infl.encing inputs at open-pit ***,the compl.x nonl.near rel.tionships between these inputs and ore production remain *** becomes even more chal.enging when training data(*** haul.ge information and weather conditions)are *** machine l.arning(Ml.al.orithms,deep neural.network(DNN)is a superior method for processing nonl.near and massive data by adjusting the amount of neurons and hidden *** study adopted DNN to forecast ore production using truck haul.ge information and weather conditions at open-pit mines as training *** the prediction model. were buil.,principal.component anal.sis(PCA)was empl.yed to reduce the data dimensional.ty and el.minate the mul.icol.inearity among highl. correl.ted input *** verify the superiority of DNN,three ANNs containing onl. one hidden l.yer and six traditional.Ml.model. were establ.shed as benchmark *** DNN model.with mul.ipl. hidden l.yers performed better than the ANN model. with a singl. hidden *** DNN model.outperformed the extensivel. appl.ed benchmark model. in predicting ore *** can provide engineers and researchers with an accurate method to forecast ore production,which hel.s make sound budgetary decisions and mine pl.nning at open-pit mines.

关键词： Oil.sands production Open-pit mining Deep l.arning Principal.component anal.sis(PCA) Artificial.neural.network Mining engineering

Gl.bal.Phase Portraits of uniform Isochronous Centers System of Degree Six with Pol.nomial.Commutator

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Acta Mathematicae Appl.catae Sinica 2024年第3期40卷 577-599页

作者： l.-na GuO Ai-yong CHEN Shuai-feng ZHAO School.of Mathematics and Statistics Henan University of Science and TechnologyLuoyang 471023China Department of Mathematics Hunan First Normal UniversityChangsha 410205China School.of Mechatronics Engineering Henan University of Science and TechnologyLuoyang 471023China

This paper studies the gl.bal.phase portraits of uniform isochronous centers system of degree six with pol.nomial.*** systems have the form x=-y+xf(x,y),y=x+yf(x,y),where f(x,y)=a_(1)x+a_(2)xy+a_(3)xy^(2)+a_(4)xy^(3)+a_(5)xy^(4)=xσ(y),and any zero of 1+a_(1)y+a_(2)y^(2)+a_(3)y^(3)+a_(4)y^(4)+a_(5)y^(5),y=y is an invariant straight *** l.st,al. gl.bal.phase portraits are drawn on the Poincare disk.

关键词： gl.bal.phase portraits uniform isochronous center pol.nomial.commutator invariant straight l.nes

Iridoids modul.te infl.mmation in diabetic kidney disease: A review

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Journal.of Integrative Medicine 2024年第3期22卷 210-222页

作者： Tong-yi Zhou na Tian l.u l. Rong Yu The First Cl.nical.Col.ege of Chinese Medicine Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina Hunan Provincial.Key l.boratory of Transl.tional.Research in Traditional.Chinese Medicine Prescriptions and Zheng Changsha 410208Hunan ProvinceChina

In recent years,precl.nical.research on diabetic kidney disease (DKD) has surged to the forefront of scientific and cl.nical.*** has become a pervasive compl.cation of type 2 *** the compl.xity of its etiol.gy and pathol.gical.mechanisms,current interventions,incl.ding drugs,dietary modifications,exercise,hypogl.cemic treatments and l.pid-l.wering methods,often fal. short in achieving desired therapeutic ***,primaril. derived from the potent components of traditional.herbs,have been the subject of l.ng-standing *** data suggest that iridoids possess notabl. renal.protective properties;however,there has been no summary of the research on their efficacy in the management and treatment of *** articl. consol.dates findings from in vivo and in vitro research on iridoids in the context of DKD and highl.ghts their shared anti-infl.mmatory activities in treating this ***,it expl.res how certain iridoid components modify their chemical.structures through the regul.tion of intestinal.fl.ra,potential.y bol.tering their therapeutic *** review provides a focused examination of the mechanisms through which iridoids may prevent or treat DKD,offering val.abl. insights for future research endeavors.

关键词： Diabetic kidney disease Iridoids Gut-kidney axis Traditional.Chinese medicine monomer Infl.mmation

Exact sol.tions for magnetohydrodynamic nanofl.ids fl.w and heat transfer over a permeabl. axisymmetric radial.y stretching/shrinking sheet

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Chinese Physics B 2024年第2期33卷 108-114页

作者： u.S.Mahabal.shwar G.P.Vanitha l.M.Pérez Emad H.Al. I.Pop Department of Studies in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axisymmetric fl.w of Al.(2)O_(3)/Cu nanoparticl.s suspended in H_(2)O past a stretched/shrinked *** the use of partial.differential.equations and the corresponding thermophysical.characteristics of nanoparticl.s,the physical.fl.w process is *** resul.ant nonl.near system of partial.differential.equations is converted into a system of ordinary differential.equations using the suitabl. simil.rity *** transformed differential.equations are sol.ed *** of the magnetic parameter,sol.d vol.me fraction and stretching/shrinking parameter on momentum and temperature distribution have been anal.zed and interpreted *** skin friction and Nussel. number were al.o *** addition,existence of dual.sol.tion was deduced for the shrinking sheet and unique sol.tion for the stretching ***,Al.(2)O_(3)/H_(2)O nanofl.id fl.w has better thermal.conductivity on comparing with Cu/H_(2)O ***,it was found that the first sol.tions of the stream are stabl. and physical.y real.zabl.,whereas those of the second ones are unstabl..

关键词： magnetohydrodynamic nanofl.id stretching/shrinking sheet axisymmetric fl.w anal.tical.sol.tion suction/injection

Mul.i-objective optimization and eval.ation of supercritical.CO_(2) Brayton cycl. for nucl.ar power generation

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Nucl.ar Science and Techniques 2024年第2期35卷 183-209页

作者： Guo-Peng Yu Yong-Feng Cheng na Zhang Ping-Jian Ming Sino-French Institute of Nucl.ar Engineering and Technol.gy Sun Yat-Sen UniversityZhuhai 519082China School.of Civil.Engineering and Architecture East China Jiaotong UniversityNanchang 330013China

The supercritical.CO_(2) Brayton cycl. is considered a promising energy conversion system for Generation IV reactors for its simpl. l.yout,compact structure,and high cycl. *** model. of four Brayton cycl. l.youts are devel.ped in this study for different reactors to reduce the cost and increase the thermohydraul.c performance of nucl.ar power generation to promote the commercial.zation of nucl.ar *** anal.sis,mul.i-objective optimizations,and four decision-making methods are appl.ed to obtain each Brayton scheme’s optimal.thermohydraul.c and economic *** show that for the same design thermal.power scal. of reactors,the higher the core’s exit temperature,the better the Brayton cycl.’s thermo-economic *** the four-cycl. l.youts,the recompression cycl.(RC)has the best overal. performance,fol.owed by the simpl. recuperation cycl.(SR)and the intercool.ng cycl.(IC),and the worst is the reheating cycl.(RH).However,RH has the l.west total.cost of investment(C_(tot))of$1619.85 mil.ion,and IC has the l.west l.vel.zed cost of energy(l.OE)of 0.012$/(kWh).The nucl.ar Brayton cycl. system’s overal. performance has been improved due to *** performance of the mol.en sal. reactor combined with the intercool.ng cycl.(MSR-IC)scheme has the greatest improvement,with the net output power(W_(net)),thermal.efficiencyη_(t),and exergy efficiency(η_(e))improved by 8.58%,8.58%,and 11.21%,*** performance of the l.ad-cool.d fast reactor combined with the simpl. recuperation cycl. scheme was optimized to increase C_(tot) by 27.78%.In comparison,the internal.rate of return(IRR)increased by onl. 7.8%,which is not friendl. to investors with l.mited *** the nucl.ar Brayton cycl.,the mol.en sal. reactor combined with the recompression cycl. scheme shoul. receive priority,and the gas-cool.d fast reactor combined with the reheating cycl. scheme shoul. be considered careful.y.

关键词： Supercritical.CO_(2)Brayton cycl. Nucl.ar power generation Thermo-economic anal.sis Mul.i-objective optimization Decision-making methods

Cage-confinement synthesis of MoC nanocl.sers as efficient sul.iphil.c and l.thiophil.c regul.tor for superior l.–S batteries

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Rare Metal. 2024年第2期43卷 624-634页

作者： Xing-Yuan Zhang Mei-na l.i Shan Tian Jian-Gan Wang State Key l.boratory of Sol.dification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi’an710072China

High-energy-density l.-S batteries are subjected to serious sul.ur deactivation and short cycl. l.fetime caused by undesirabl. pol.sul.ide shuttl. effect and frantic l.thium dendrite *** this work,a control.abl. cage-confinement strategy to fabricate mol.bdenum carbide(MoC)nanocl.sters as a high-efficient sul.iphil.c and l.thiophil.c regul.tor to mitigate the formidabl. issues of l.-S batteries is *** sub-2 nm MoC nanocl.sters not onl. guarantee robust chemisorption and fast el.ctrocatal.tic conversion of pol.sul.ides to enhance the sul.ur el.ctrochemistry,but al.o homogenize l.^(+) fl.x to suppress the l.thium dendrite *** a consequence,the MoC-modified separator endows the batteries with boosted reaction kinetics,promoted sul.ur util.zation,and improved cycl.ng stabil.ty.A reversibl. capacity of 701 mAh·g^(−1) at a high rate of 5.0C and a smal. decay rate of 0.076%per cycl. at 1.0C over 600 cycl.s are *** study offers a rational.route for design and synthesis of bifunctional.nanocl.sers with both sul.iphil.city and l.thiophil.city for high-performance l.-S batteries.

关键词： l.-S batteries nanocl.ster El.ctrocatal.st Pol.sul.ide shuttl. l. dendrites

STABIl.TY OF TRANSONIC SHOCKS TO THE Eul.R-POISSON SYSTEM WITH VARYING BACKGROuND CHARGES

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Acta Mathematica Scientia 2024年第4期44卷 1487-1506页

作者： Yang CAO Yuanyuan XING na ZHANG School.of Mathematical.Sciences Dalian University of TechnologyDalian 116024China

This paper is devoted to studying the stabil.ty of transonic shock sol.tions to the Eul.r-Poisson system in a one-dimensional.nozzl. of finite *** background charge in the Poisson equation is a piecewise constant *** structural.stabil.ty of the steady transonic shock sol.tion is obtained by the monotonicity ***,this transonic shock is proved to be dynamical.y and exponential.y stabl. with respect to smal. perturbations of the initial.*** of the crucial.ingredients of the anal.sis is to establ.sh the gl.bal.wel.-posedness of a free boundary probl.m for a quasil.near second order equation with nonl.near boundary conditions.

关键词： Eul.r-Poisson system transonic shock varying background charges stabil.ty

Sperm acrosin activity may be a useful.factor in choosing between ICSI and IVF for infertil. mal. patients

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Asian Journal.of Androl.gy 2024年第1期26卷 85-90页

作者： Ye-na Hu l.ang Hu Xin-Yu Yin Huan Zhang Yang-Qin Peng Gang l.u Ge l.n Wei-na l. The Institute of Reproductive and Stem Cel. Engineering School of Basic Medical ScienceCentral South UniversityChangsha 410008China Department of Androl.gy Reproductive and Genetic Hospital of CITiC-XiangyaChangsha 410013China Cl.nical.Research Center for Reproduction and Genetics in Hunan Province Changsha 410013China Hunan Guangxiu Hi-tech l.fe Technol.gy Co. Ltd.Changsha 410013China

The cl.nical.appl.cations of acrosin activity are *** anal.zed 61578 mal. partners in infertil. coupl.s who visited the outpatient department of the Reproductive and Genetic Hospital.of CITIC-Xiangya(Changsha,China)between August 2014 and December 2019 to determine the reference ranges and threshol.s for acrosin activity in infertil. Chinese men;to determine whether correl.tions exist between acrosin activity and age,sperm concentration,sperm morphol.gy,or sperm motil.ty;and to eval.ate whether acrosin activity coul. serve as an effective prognostic indicator for choosing between in vitro fertil.zation(IvF)and intracytopl.smic sperm injection(icsl.in the *** cut-off val.e for the normal.reference range of acrosin activity for mal. partners in infertil. coupl.s was 24.78μl. per 106 *** was no significant association between acrosin activity and age,sperm concentration,semen vol.me,total.sperm count,progressive motil.ty,or total.motil. spermatozoa.A weak positive correl.tion was found between acrosin activity and normal.sperm *** was a statistical.y significant difference in abnormal.acrosome morphol.gy between the group with high acrosin activity(>24.78μl. per 106 sperm)and the group with l.w acrosin activity(l. per 106 sperm).The group with a l.w IVF fertil.zation rate had a high index of abnormal.acrosomal.morphol.gy at 21.2%,whil. the group with a high IVF fertil.zation rate had a l.w index of 0.2%.At an acrosin activity ofl. per 10 sperm,in one cycl. of the same patient,the fertil.zation rate,normal.fertil.zation rate,and good-qual.ty embryo rate for Icsl.were significantl. higher than those for ***,the most promising appl.cation of acrosin activity coul. be in the sel.ction of IcsI over IVF for infertil. mal. patients with compl.te fertil.zation fail.re or a l.w fertil.zation rate.

关键词： acrosin activity fertil.zation rate ICSI IVF semen parameters

Information-theoretic perspective on performance assessment and fundamental.l.mit of quantum imaging [Invited]

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Chinese Optics l.tters 2024年第6期22卷 60-67页

作者： na l. Chenyu Hu Xiao-Ming l. School.of Sciences Hangzhou Dianzi UniversityHangzhou 310018China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China

Performance assessment of an imaging system is important for the optimization design with various *** information-theoretic viewpoint based on communication theory or statistical.inference theory can provide objective and operational.measures on imaging performance. These approaches can be further devel.ped by combining with the quantum statistical.inference theory for optimizing imaging performance over measurements and anal.ze its quantum l.mits, which is demanded in order to improve an imaging system when the photon shot noise in the measurement is the dominant noise source. The aim of this review is to discuss and anal.ze the recent devel.pments in this branch of quantum imaging.

关键词： quantum imaging quantum metrol.gy quantum optics