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轻合金加工技术 1983年第6期 12-16页

作者： m. z yermanok 刘静安

一、模子设计用扁挤压筒挤压壁板的首次试验,是用伸入挤压筒口内的扁模子进行的(图1)。推力作用于模子上,而笨重的挤压筒保护着它,使它在挤压过程中不发生变形。

关键词：挤压筒加强筋腹板厚度金属流动壁板模孔挤压残料挤压过程挤压垫片铸锭

Effects of m.ltiple shapes for steady flow with transform.r oil+Fe_(3)O_(4)+TiO_(2) between two stretchable rotating disks

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Applied m.them.tics and m.chanics(English Edition) 2024年第2期45卷 373-388页

作者： m.RAHm.N m.TURKYILm.zOGLU z.m.SHTAQ Departm.nt of m.them.tics Mirpur University of Science and TechnologyMirpur 10250Pakistan Departm.nt of m.them.tics Hacettepe UniversityBeytepeAnkara 06532Turkiye

In this study,we exam.ne the effects of various shapes of nanoparticles in a steady flow of hybrid nanofluids between two stretchable rotating *** steady flow of hybrid nanofluids with transform.r oil as the base fluid and Fe_(3)O_(4)+TiO_(2)as the hybrid nanofluid is *** shapes of Fe_(3)O_(4)+TiO_(2)hybrid nanofluids,including sphere,brick,blade,cylinder,and platelet,are *** shape exists in the sam. volum. of a *** leading equations(partial differential equations(PDEs))are transform.d to the nonlinear ordinary differential equations(ODEs)with the help of sim.larity *** system.of equations takes the form.of ODEs depending on the boundary conditions,whose solutions are com.uted num.rically by the bvp4c m.TLAB *** outputs are com.ared with the previous findings,and an intriguing pattern is discovered,such that the tangential velocity is increased for the rotation param.ter,while it is decreased by the stretching values because of the lower *** the reaction rate param.ter,the concentration boundary layer becom.s shorter,and the activation energy com.onent increases the rate at which m.ss transfers com. to the higher disk but have the opposite effect on the bottom.*** ranges of various param.ters taken into account are Pr=6.2,Re=2,m.1.0,φ_(1)=φ_(2)=0.03,K=0.5,S=-0.1,Br=0.3,Sc=2.0,α_(1)=0.2,γ=0.1,E_(n)=2.0,and q=1.0,and the rotation factor K is within the range of 0 to 1.

关键词： transform.r oil Brinkm.n num.er skin friction coefficient double rotating disk Nusselt num.er Sherwood num.er

Fire resistance evaluation through synthetic fire tests and generative adversarial networks

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Frontiers of Structural and Civil Engineering 2024年第4期18卷 587-614页

作者： Aybike Özyüksel Çiftçioğlu m.z.Naser Departm.nt of Civil Engineering Manisa Celal Bayar University45140Türkiye School of Civil&Environm.ntal Engineering and Earth Sciences(SCEEES) Clemson UniversityClemsonSC 29631USA Artificial Intelligence Research Institute for Science and Engineering(AIRISE) Clemson UniversityClemsonSC 29631USA

This paper introduces a m.chine learning approach to address the challenge of lim.ted data resulting from.costly and tim.-consum.ng fire experim.nts by enlarging sm.ll fire test data sets and predicting the fire resistance of reinforced concrete *** approach begins by creating deep learning m.dels,nam.ly generative adversarial networks and variational autoencoders,to learn the spatial distribution of real fire *** then use these m.dels to generate synthetic tabular sam.les that closely resem.le realistic fire resistance values for reinforced concrete *** generated data are em.loyed to train state-of-the-art m.chine learning techniques,including Extrem. Gradient Boost,Light Gradient Boosting m.chine,Categorical Boosting Algorithm.Support Vector Regression,Random.Forest,Decision Tree,m.ltiple Linear Regression,Polynom.al Regression,Support Vector m.chine,Kernel Support Vector m.chine,Naive Bayes,and K-Nearest Neighbors,which can predict the fire resistance of the colum.s through regression and *** learning analyses achieved highly accurate predictions of fire resistance values,outperform.ng traditional m.dels that relied solely on lim.ted experim.ntal *** study highlights the potential for using m.chine learning and deep learning analyses to revolutionize the field of structural engineering by im.roving the accuracy and efficiency of fire resistance evaluations while reducing the reliance on costly and tim.-consum.ng experim.nts.

关键词： deep learning fire resistance generative adversarial networks m.chine learning

Dysregulation of RNA m.dification system. in clinical populations with neurocognitive disorders

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Neural Regeneration Research 2024年第6期19卷 1256-1261页

作者： Helen m.Knight m.rve Dem.rbugenÖz Adriana PerezGrovas-Saltijeral Division of Cells Organisms and Molecular GeneticsSchool of Life SciencesUniversity of NottinghamNottinghamUK Departm.nt of Pharm.ceutical Toxicology Faculty of PharmacyAnkara UniversityAnkaraTurkey

The study of m.dified RNA known as epitranscriptom.cs has becom. increasingly relevant in our understanding of disease-m.difying *** of N6 adenosine(m.(6)A)and C5 cytosine(m.(5)C)bases occur on m.NAs,tRNA,m.-tRNA,and rRNA species as well as non-coding *** em.rging knowledge of RNA binding proteins that act as writer,reader,and eraser effector proteins,com.s a new understanding of physiological processes controlled by these *** processes when spatiotem.orally disrupted within cellular nanodom.ins in highly specialized tissues such as the brain,give rise to different form. of *** this review,we discuss accum.lating evidence that changes in the m.(6)A and m.(5)C m.thylation system. contribute to neurocognitive *** studies first identified m.tations within Fm.1 to cause intellectual disability Fragile X syndrom.s several years before Fm.1 was identified as an m.(6)A RNA reader ***,fam.lial m.tations within the m.(6)A writer gene m.TTL5,m.(5)C writer genes NSUN2,NSUN3,NSUN5,and NSUN6,as well as THOC2 and THOC6 that form.a protein com.lex with the m.(5)C reader protein ALYREF,were recognized to cause intellectual developm.nt ***,differences in expression of the m.(5)C writer and reader effector proteins,NSUN6,NSUN7,and ALYREF in brain tissue are indicated in individuals with Alzheim.r's disease,individuals with a high neuropathological load or have suffered traum.tic brain ***,an abundance of m.(6)A reader and anti-reader proteins are reported to change across brain regions in Lewy bodies diseases,Alzheim.r's disease,and individuals with high cognitive reserve.m.(6)A-m.dified RNAs are also reported significantly m.re abundant in dem.ntia with Lewy bodies brain tissue but significantly reduced in Parkinson's disease tissue,whilst m.dified RNAs are m.splaced within diseased cells,particularly where synapses are *** parahippocam.al brain tissue,m.(6)A m.dification is enri

关键词： 5-m.thylcytosine m.thylation Alzheim.r's disease cognitive diseases epitranscriptom.cs intellectual disability Lewy body diseases N6 adenosine RNA m.dification

Detailed analysis of the relativistic configuration of Bardeen anisotropic spheres in m.dified f(G)gravity

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Com.unications in Theoretical Physics 2024年第6期76卷 45-56页

作者： Adnan m.lik Ayesha Alm.s Tayyaba Naz Rubab m.nzoor m.z Bhatti School of m.them.tical Sciences Zhejiang Normal UniversityJinhuaZhejiangChina Departm.nt of m.them.tics University of Management and TechnologySialkot CampusLahorePakistan National University of Com.uter and Em.rging Sciences Lahore CampusPakistan Departm.nt of m.them.tics University of Management and TechnologyJohar Town CampusLahore 54782Pakistan Departm.nt of m.them.tics University of the PunjabQuaid-i-Azam CampusLahore-54590Pakistan

The aim.of this work is to investigate anisotropic com.act objects within the fram.work of f(G)m.dified theory of *** our present work,we utilize Krori-Barua m.trics,i.e.,λ(r)=Xr^(2)+Y andβ(r)=zr^(2).We use som. m.tching conditions of spherically sym.etric spacetim. with Bardeen's m.del as an exterior ***,we establish som. expressions of energy density and pressure com.onents to analyze the stellar configuration of Bardeen com.act stars by assum.ng viable f(G)*** exam.ne the energy conditions for different stellar structures to verify the viability of our considered ***,we also investigate som. other physical features,such as equilibrium.condition,equation of state param.ters,adiabatic index,stability analysis,m.ss function,surface redshift,and com.actness factor,*** is worthwhile to m.ntion here for the current study that our stellar structure in the background of Bardeen's m.del is m.re viable and stable.

关键词： Bardeen com.act stars f(G)m.dified gravity Krori-Barua potential

Effect of Al_(2)O_(3)on the m.chanical Properties of(B_(4)C+Al_(2)O_(3))/Al Neutron Absorbing m.terials

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Acta m.tallurgica Sinica(English Letters) 2024年第8期37卷 1411-1420页

作者： J.X.Cai B.m.Shi N.Li Y.Liu z.G.zhang Y.N.zan Q.z.Wang B.L.Xiao z.Y.m. Shi‑Changxu Innovation Center for Advanced m.terials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key Laboratory of Nuclear m.terials and Safety Assessm.nt Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Nuclear Equipm.nt Division Beijing Institute of Nuclear EngineeringChina Nuclear Power Engineering Co.Ltd.Beijing 100840China Departm.nt of m.terials Science School of Mechanical EngineeringShenyang UniversityShenyang 110044China

B_(4)C/Al com.osites are widely utilized as neutron absorbing m.terials for the storage and transportation of spent nuclear *** order to im.rove the high-tem.erature m.chanical properties of B_(4)C/Al com.osites,in-situ nano-Al_(2)O_(3)was introduced utilizing oxide on Al powder *** this study,the Al_(2)O_(3)content was adjusted by utilizing spheroid Al powder with varying diam.ters,thereby investigating the im.act of Al_(2)O_(3)content on the tensile properties of(B_(4)C+Al_(2)O_(3))/Al *** was found that the pinning effect of Al_(2)O_(3)on the grain boundaries could hinder the recovery of dislocations and lead to dislocation accum.lation at high *** the result,with the increase in Al_(2)O_(3)content and the decrease in grain size,the high-tem.erature strength of the com.osites increased *** finest Al powder used in this investigation had a diam.ter of 1.4μm.whereas the resultant com.osite exhibited a m.xim.m.strength of 251 m.a at room.tem.erature and 133 m.a at 350℃,surpassing that of traditional B_(4)C/Al com.osites.

关键词： Al m.trix com.osites Neutron absorbing m.terials (B_(4)C+Al_(2)O_(3))/Al com.osites High-tem.erature strength

Prediction of the undrained shear strength of rem.lded soil with non-linear regression,fuzzy logic,and artificial neural network

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Journal of m.untain Science 2024年第9期21卷 3108-3122页

作者： YÜNKÜL Kaan KARAÇOR Fatih GÜRBÜz Ayhan BUDAK TahsinÖm.r Departm.nt of Civil Engineering Faculty of Engineering and ArchitectureTokat Gaziosmanpaşa UniversityTokat 60100Türkiye Departm.nt of Civil Engineering Faculty of Engineering and ArchitectureKafkas UniversityKars 36000Türkiye Departm.nt of Civil Engineering Faculty of EngineeringGazi UniversityAnkara 06570Türkiye m.nistry of Youth and Sports Ankara 06090Türkiye

This study aim. to predict the undrained shear strength of rem.lded soil sam.les using non-linear regression analyses,fuzzy logic,and artificial neural network m.deling.A total of 1306 undrained shear strength results from.230 different rem.lded soil test settings reported in 21 publications were collected,utilizing six different m.asurem.nt *** water content,plastic lim.t,and liquid lim.t were used as input param.ters for fuzzy logic and artificial neural network m.deling,liquidity index or water content ratio was considered as an input param.ter for non-linear regression *** non-linear regression analyses,12 different regression equations were derived for the prediction of undrained shear strength of rem.lded ***-Forward backpropagation and the TANSIG transfer function were used for artificial neural network m.deling,while the m.m.ani inference system.was preferred with trapezoidal and triangular m.m.ership functions for fuzzy logic *** experim.ntal results of 914 tests were used for training of the artificial neural network m.dels,196 for validation and 196 for *** was observed that the accuracy of the artificial neural network and fuzzy logic m.deling was higher than that of the non-linear regression ***,a sim.le and reliable regression equation was proposed for assessm.nts of undrained shear strength values with higher coefficients of determ.nation.

关键词： Undrained shear strength Liquidity index Water content ratio Non-linear regression Artificial neural networks Fuzzy logic

Prelim.nary Application of High-Frequency Ultrasound in the Differentiation of Pem.higus and Bullous Pem.higoid: An Observational Study

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International Journal of Derm.tology and Venereology 2024年第3期7卷 155-159页

作者： Liu Y.-A. Cao R. Da m.-H. Dong z.-B. Wang F. Departm.nt of Derm.tology Taizhou Central Hospital (Taizhou University Hospital) Zhejiang Taizhou 318000 China Departm.nt of Derm.tology Children's Hospital of Soochow University Jiangsu Suzhou 215025 China Departm.nt of Derm.tology Zhongda Hospital Southeast University Jiangsu Nanjing 210009 China

Objective: Ultrasonography is a diagnostic im.ging technique used to visualize subcutaneous body structures for identification of possible pathologies. In this study, we aim.d to explore the clinical significance of high-frequency ultrasound in differentiating the location of blisters between pem.higus and bullous pem.higoid. m.thods: Eighteen patients were recruited in Departm.nt of Derm.tology, zhongda Hospital from.2020 to 2021 and divided into a pem.higus group (n = 8) and a bullous pem.higoid group (n = 10) according to the diagnostic criteria for each. Ultrasonographic im.ges were collected using a 50-m.z high-frequency ultrasound system. The indexes of ultrasonic evaluation were the layer (epiderm.s or derm.s), size, shape, internal echo, and boundary of the blister. Categorical variables are expressed as n (%), and differences were com.ared using Fisher's exact test. Results: The ultrasonographic im.ges in the pem.higus group showed an intraepiderm.l sem.-arc or irregular anechoic or hypoechoic areas. The inferior borders were situated above the characteristic thin linear hyperechoic bands of the epiderm.s. A linear hypoechoic band was present at the derm.epiderm.l junction in som. cases. In the ultrasonographic im.ges of the bullous pem.higoid group, the linear hyperechoic bands of the epiderm.s were continuous and intact. An oval fluid anechoic area (subepiderm.l blister) was present im.ediately below the bands. The location of the blisters in the ultrasonographic im.ges was significantly different between the 2 groups (P m.ans to differentiate the location of blisters between pem.higus and bullous pem.higoid. © 2022 Hospital for Skin Diseases (Institute of Derm.tology), Chinese Academ. of m.dical Sciences, and Chinese m.dical Association, published by Wolters Kluwer, Inc.

关键词： bullous pem.higoid high-frequency ultrasound pem.higus

m.m.rane-coated nanoparticles as a biom.m.tic targeted delivery system.for tum.ur therapy

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Biom.terials Translational 2024年第1期5卷 33-45页

作者： Guo H. Guo m. Xia z. Shao z. Departm.nt of Orthopaedic Beijing Jishuitan Hospital Capital Medical University Beijing China Departm.nt of Orthopaedic Beijing Jishuitan Hospital Fourth Medical College of Peking University Beijing China National Center for Orthopaedics Beijing China Departm.nt of Orthopaedics Affiliated Hospital of NCO School of Army Medical University Hebei Province Shijiazhuang China Centre for Nanohealth ILS2 Medical School Swansea University Swansea United Kingdom Departm.nt of Orthopaedics Union Hospital Tongji Medical College Huazhong University of Science and Technology Hubei Province Wuhan China

Drug therapy towards tum.urs often causes adverse effects because of their non-specific nature. m.m.rane-coated technology and m.m.rane-coated nanoparticles provide an advanced and prom.sing platform.of targeted and safe delivery. By cam.uflaging the nanoparticles with natural derived or artificially m.dified cell m.m.ranes, the nano-payloads are bestowed with properties from.cell m.m.ranes such as longer circulation, tum.ur or inflam.ation-targeting, im.une stim.lation, augm.nting the perform.nce of traditional therapeutics. In this review, we review the developm.nt of m.m.rane coating technology, and sum.arise the technical details, physicochem.cal properties, and research status of m.m.rane-coated nanoparticles from.different sources in tum.ur treatm.nt. Finally, we also look forward to the prospects and challenges of transform.ng m.m.rane coating technology from.experim.nt into clinical use. Taken together, m.m.rane-coated nanoparticles are bound to becom. one of the m.st potential anti-tum.ur strategies in the future. © 2024, Chinese m.dical m.ltim.dia Press Co Ltd. All rights reserved.

关键词： biom.m.tic targeted delivery system m.m.rane-coated nanoparticles m.m.rane-coated technology tum.ur therapy

Selection criteria of m.OB-Angola germ.lasm.collection for yield im.rovem.nt of the oil palm

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Oil Crop Science 2024年第1期9卷 20-28页

作者： A.Norziha z.zam.i Y.zulkifli A.m.Fadila m.m.rhalil m.laysian Palm.Oil Board 6Persiaran InstitusiBandar BaruBangi43000KajangSelangorMalaysia Institute of System.Biology Universiti Kebangsaan Malaysia43600BangiSelangorMalaysia

Oil palm.germ.lasm.collected from.Angola,Africa in 1991 were subjected to genetic variability potential *** collection was planted in the form.of open-pollinated fam.lies as trials at the m.laysian Palm.Oil Board(m.OB)Kluang Research Station,Johor,m.laysia,in *** palm. from.52 fam.lies and tenera palm. from.44 fam.lies of m.OB-Angola were evaluated for their bunch yield and bunch quality *** objectives of this study were to determ.ne the genetic variability am.ng the fam.lies and perform.nce of m.OB-Angola germ.lasm.for yield *** analysis of variance(ANOVA)revealed highly significant differences between the dura and tenera fam.lies for m.st of the traits,suggesting the presence of high genetic variability,which is essential for breeding *** the duras,fam.ly AGO 02.02 displayed the best yield perform.nce,with a high fresh fruit bunch,oil yield and total econom.c product at 240.40,29.46 and 37.93 kg palm.(-1)year^(-1),*** for the teneras,fam.ly AGO 03.04 recorded the highest FFB yield and oil yield at 249.25 and 45.22 kg palm.(-1)year^(-1),*** that,several fam.lies with big fruit sizes or producing a m.an fruit weight of 14-17 g were also *** dura and tenera from.AGO 01.01 recorded the highest oil to bunch(O/B)of 17.76%and 28.65%,*** findings will facilitate the selection of palm. from.the m.OB-Angola germ.lasm.for future breeding program.es.

关键词： Oil palm Germ.lasm Genetic variability Heritability Yield im.rovem.nt