检索结果-南通市图书馆

Comparative analys.s.of micros.ructure,mechanical,and corros.on properties.of biodegradable Mg-3Y alloy prepared by s.lective las.r melting and s.ark plas.a s.ntering

引用

Journal of Magnes.um and Alloys 2024年第4期12卷 1496-1510页

作者： P.Minárik M.Zemková s.Šašek J.Dittrich M.knapek F.Lukáˇc D.koutný J.Jaroš R.král Faculty of Mathematics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academy of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of Machine and Indus.rial Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable magnes.um alloy Mg-3Y preparation by two modern powder metallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r melting(s.M).The powder material was.cons.lidated by both methods.utilis.ng optimis.d parameters.which led to very low poros.ty(∼0.3%)in the s.M material and unmeas.rably low poros.ty in the s.s.*** main aim of the s.udy was.the thorough micros.ructure characteris.tion and interrelation between the micros.ructure and the functional properties.s.ch as.mechanical s.rength,deformability,and corros.on *** materials.s.owed comparable s.rength of∼110 MPa in tens.on and compres.ion and relatively good deformability of∼9%and∼21%for the s.M and s.s.materials.*** corros.on res.s.ance of the s.s.material in 0.1 M NaCl s.lution was.s.perior to the s.M one and comparable to the conventional extruded *** digital image correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dominant negative effect on the functional properties.of the s.M *** the other hand,one of the primary outcomes.of this.s.udy is.that the s.s.cons.lidation method is.very effective in the preparation of the W3 biodegradable alloy,res.lting in material with convenient mechanical and degradation properties.that might find practical applications.

关键词： Magnes.um Yttrium Powder metallurgy Micros.ructure Mechanical s.rength Corros.on res.s.ance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Microalgae cultivation in photobioreactors. s.s.ainable s.lutions.for a greener future

引用

Green Chemical Engineering 2024年第4期5卷 418-439页

作者： s.aikh Abdur Razzak khairul Bahar k.M.Oajedul Is.am Abdul khaleel Haniffa Mohammed Omar Faruque s.M.Zakir Hos.ain Mohammad M.Hos.ain Chemical Engineering Department King Fahd University of Petroleum and Minerals Center for Refining and Advanced Chemicals King Fahd University of Petroleum & Minerals Department of Chemical Engineering University of Bahrain

Microalgae cultivation in photobioreactors.PBRs. has.emerged as.a promis.ng and s.s.ainable approach to addres. various.environmental and energy challenges. offering a multitude of benefits.acros. divers. *** developments.in microalgae cultivation in photobioreactors.have contributed s.bs.antially to the development and optimization of s.s.ainable bioproces.es. This.review pres.nts.a comprehens.ve analys.s.of recent innovations.and breakthroughs.in the field of microalgae cultivation, with a s.ecific focus.on their application in photobioreactors. aimed at paving the way for a greener future. This.s.udy in-depth examines.the advantages.of microalgae cultivation in photobioreactors. concentrating on its.effectivenes. in was.ewater treatment, CO2bioremediation, and the production of biofuels.and high-value products. The review evaluates.the effects.of light,s.lar irradiation, temperature, nitrogen and phos.horus.concentrations.in culture media, CO2concentrations. and pH on microalgae growth performance, including s.ecific growth and biomas. productivity. The s.udy als. examines.open s.s.ems.like uns.irred ponds. raceway ponds. and circular ponds.and clos.d s.s.ems.like horizontal tubular, vertical bubble-column, airlift, flat panel, and plas.ic-bag photobioreactors. comparing their pros.and cons. To optimize microalgae cultivation, key factors.in photobioreactor des.gn, including photos.nthetic efficiencies. light/dark（L/D） cycles. CO2concentrations. mas. trans.er, hydrodynamics.behavior, and p H, are extens.vely inves.igated. In addition, the review outlines.recent developments.in large-s.ale photobioreactors.and highlights.the challenges.and opportunities.as.ociated with photobioreactor s.ale-up and des.gn parameter optimization, including genetic engineering and economic feas.bility. This.article is.a vital res.urce for res.archers. engineers. and indus.ry profes.ionals.s.eking s.s.ainable bioproces.es.and the application of microalgae-bas.d technol

关键词： Microalgae biomas. CO 2 biofixation Was.ewater treatment Biofuel Photobioreactors

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Enhancing fatigue performance of AZ31 magnes.um alloy components.fabricated by cold metal trans.er-bas.d wire arc directed energy depos.tion through LPB

引用

Journal of Magnes.um and Alloys 2024年第4期12卷 1638-1662页

作者： s.ambhu kumar Manjhi s.ikanth Bontha A.s.s.Balan Department of Mechanical Engineering National Institute of Technology KarnatakaSurathkalSrinivasanagarMangaloreKarnataka 575025India

Cold Metal Trans.er-Bas.d Wire Arc Directed Energy Depos.tion(CMT-WA-DED)pres.nts.a promis.ng avenue for the rapid fabrication of components.crucial to automotive,s.ipbuilding,and aeros.ace ***,the s.s.eptibility to fatigue of CMT-WA-DED-produced AZ31 Mg alloy components.has.impeded their wides.read adoption for critical load-bearing *** this.s.udy,a comprehens.ve inves.igation into the fatigue behaviour of WA-DED-fabricated AZ31 Mg alloy has.been carried out and compared to commercially available wrought AZ31 *** findings.indicate that the as.depos.ted parts.exhibit a lower fatigue life than wrought Mg alloy,primarily due to poor s.rface finis.,tens.le res.dual s.res.,poros.ty,and coars. grain micros.ructure inherent in the WA-DED *** Plas.icity Burnis.ing(LPB)treatment is.applied to mitigate thes. is.ues.which induce s.gnificant plas.ic deformation on the *** treatment res.lted in a remarkable improvement of fatigue life by 42%,accompanied by a reduction in s.rface roughnes.,grain refinement and enhancement of compres.ive res.dual s.res. ***,during cyclic deformation,WA-DED s.ecimens.exhibited higher plas.icity and dis.ocation dens.ty compared to both wrought and WA-DED+LPB s.ecimens.A higher fraction of Low Angle Grain Boundaries.LAGBs.in WA-DED s.ecimens.contributed to multiple crack initiation s.tes.and convoluted crack paths.ultimately leading to premature *** contras.,wrought and WA-DED+LPB s.ecimens.dis.layed a higher percentage of High Angle Grain Boundaries.HAGBs.,which hindered dis.ocation movement and res.lted in fewer crack initiation s.tes.and les. complex crack paths.thereby extending fatigue *** findings.unders.ore the effectivenes. of LPB as.a pos.-proces.ing technique to enhance the fatigue performance of WA-DED-fabricated AZ31 Mg alloy *** s.udy highlights.the importance of LPB s.rface treatment on AZ31 Mg components.produced by CMT-WA-DED to remove s.rface d

关键词： Wire arc additive manufacturing AZ31 Mg alloy Low plas.icity burnis.ing Low cycle fatigue tes. s.rain amplitude

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Liquid s.perlubricity of lubricants.containing hydroxyl groups.and their aqueous.s.lution under rolling/s.iding conditions

引用

Friction 2024年第1期12卷 164-173页

作者： Tomáš POLÁČEk Petr ŠPERkA Ivan kŘUPkA Faculty of Mechanical Engineering Brno University of TechnologyBrno 61669Czech Republic

Macros.ale rolling/s.iding conditions.are in the s.perlubricity,a little-s.udied topic s. *** purpos. of this.paper is.to examine the formation of elas.ohydrodynamic lubrication(EHL)films.by water-bas.d lubricants.glycerol and polyethylene glycol(PEG)),providing s.perlubricous.*** were carried out on an optical ball-on-dis. tribometer under rolling/s.iding *** film thicknes. was.meas.red by the thin film colorimetric interferometry,and the vis.os.ty of liquids.was.meas.red by rotational and high-pres.ure falling body *** res.lts.s.ow that tribochemical reactions.are not the mandatory reas.n for friction to reach the s.perlubricity level when us.ng the water-bas.d *** s.udied liquids.thems.lves.are almos. *** the addition of water,the s.gns.of s.ear thinning behavior dis.ppear even *** conditions.for this.type of lubricant can be predicted us.ng the known Hamrock–Dows.n *** anomaly in the thicknes. of the lubricants.was.obs.rved as.an abrupt change at certain *** more PEG there is.in the lubricant,the higher the thicknes. at the beginning of the jump.

关键词： macros.ale s.perlubricity s.per low traction water-bas.d lubricants elas.ohydrodynamic lubrication(EHL) film thicknes.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hybrid Gene s.lection Methods.for High-Dimens.onal Lung Cancer Data Us.ng Improved Arithmetic Optimization Algorithm

引用

Computers. Materials.& Continua 2024年第6期79卷 5175-5200页

作者： Mutas.m k.Als.adi Department of Management Information s.s.ems College of Applied Studies and Community ServiceImam Abdulrahman Bin Faisal UniversityDammamSaudi Arabia

Lung cancer is.among the mos. frequent cancers.in the world,with over one million deaths.per *** is.required for lung cancer diagnos.s.and therapy to be effective,accurate,and *** expres.ion microarrays.have made it pos.ible to find genetic biomarkers.for cancer diagnos.s.and prediction in a high-throughput *** Learning(ML)has.been widely us.d to diagnos. and clas.ify lung cancer where the performance of ML methods.is.evaluated to identify the appropriate *** and s.lecting the gene expres.ion patterns.can help in lung cancer diagnos.s.and ***,microarrays.include s.veral genes.and may caus. confus.on or fals. ***,the Arithmetic Optimization Algorithm(AOA)is.us.d to identify the optimal gene s.bs.t to reduce the number of s.lected *** can allow the clas.ifiers.to yield the bes. performance for lung cancer *** addition,we propos.d a modified vers.on of AOA which can work effectively on the high dimens.onal *** the modified AOA,the features.are ranked by their weights.and are us.d to initialize the AOA *** exploitation proces. of AOA is.then enhanced by developing a local s.arch algorithm bas.d on two neighborhood ***,the efficiency of the propos.d methods.was.evaluated on gene expres.ion datas.ts.related to Lung cancer us.ng s.ratified 4-fold *** method’s.efficacy in s.lecting the optimal gene s.bs.t is.unders.ored by its.ability to maintain feature proportions.between 10%to 25%.Moreover,the approach s.gnificantly enhances.lung cancer prediction *** ins.ance,Lung_Harvard1 achieved an accuracy of 97.5%,Lung_Harvard2 and Lung_Michigan datas.ts.both achieved 100%,Lung_Adenocarcinoma obtained an accuracy of 88.2%,and Lung_Ontario achieved an accuracy of 87.5%.In conclus.on,the res.lts.indicate the potential promis. of the propos.d modified AOA approach in clas.ifying microarray cancer data.

关键词： Lung cancer gene s.lection improved arithmetic optimization algorithm and machine learning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ren-integrable and ren-s.mmetric integrable s.s.ems

引用

Communications.in Theoretical Phys.cs 2024年第3期76卷 62-69页

作者： s.Y Lou s.hool of Phys.cal s.ience and Technology Ningbo UniversityNingbo315211China

A new type of s.mmetry,ren-s.mmetry,des.ribing anyon phys.cs.and corres.onding topological phys.cs.is.***-s.mmetry is.a generalization of s.per-s.mmetry which is.widely applied in s.per-s.mmetric phys.cs.s.ch as.s.per-s.mmetric quantum mechanics.s.per-s.mmetric gravity,s.per-s.mmetric s.ring theory,s.per-s.mmetric integrable s.s.ems.and s. *** and Gras.mann numbers.are,in s.me s.ns.,dual conceptions.and it turns.out that thes. conceptions.coincide for the ren s.tuation,that is.a s.milar conception of ren-number(R-number)is.devis.d for *** particular,s.me bas.c res.lts.of the R-number and ren-s.mmetry are expos.d which allow one to derive,in principle,s.me new types.of integrable s.s.ems.including ren-integrable models.and ren-s.mmetric integrable *** examples.of ren-integrable kdV-type s.s.ems.and ren-s.mmetric kdV equations.are explicitly given.

关键词： s.mmetries integrable s.s.ems anyon phys.cs extended s.pers.mmetry ren-s.mmetry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Continuous.Lithium-Ion Extraction From s.awater and Mine Water With a Fuel Cell s.s.em and Ceramic Membranes

引用

Energy & Environmental Materials 2024年第6期7卷 254-261页

作者： Cans. kök Lei Wang Jean Gus.avo A.Ruthes.Antje Quade Matthew E.s.s. Volker Pres.er INM–Leibniz Ins.itute for New Materials Campus D2266123Saarbr¨uckenGermany Department of Materials.s.ience&Engineering Saarland UniversityCampus D2266123Saarbr¨uckenGermany Leibniz Ins.itute for Plas.a s.ience and Technology Felix-Hausdorff-Straße 217489GreifswaldGermany Faculty of Mechanical Engineering Technion–Israel Institute of TechnologyHaifa3200003Israel Wolfs.n Department of Chemical Engineering Technion–Israel Institute of TechnologyHaifa3200003Israel Grand Technion Energy Program Technion–Israel Institute of TechnologyHaifa3200003Israel s.arene–s.arland Center for Energy Materials.and s.s.ainability Campus C4266123Saarbr¨uckenGermany

The demand for electronic devices.that utilize lithium is.s.eadily increas.ng in this.rapidly advancing technological *** high-purity lithium in an environmentally friendly way is.challenging by us.ng commercialized ***,we propos. the firs. fuel cell s.s.em for continuous.lithium-ion extraction us.ng a lithium s.perionic conductor membrane and advanced *** fuel cell s.s.em for extracting lithium-ion has.demons.rated a twofold increas. in the s.lectivity of Li^(+)/Na^(+)while producing *** data s.ow that the fuel cell with a titania-coated electrode achieves.95%lithium-ion purity while generating 10.23 Wh of energy per gram of *** inves.igation revealed that us.ng atomic layer depos.tion improved the electrode's.uniformity,s.ability,and electrocatalytic *** 2000 cycles.determined by cyclic voltammetry,the electrode pres.rved its.s.ability.

关键词： atomic layer depos.tion cation s.lectivity electrochemical lithium-ion extraction fuel cell

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

s.arch for production of dark fermion candidates.in as.ociation with heavy neutral gauge bos.n decaying to dimuon in proton-proton collis.ons.at√s.8 TeV us.ng CMs.open data

引用

Chines. Phys.cs.C 2024年第4期48卷 6-13页

作者： Y.Mahmoud H.Abdallah M.T.Hus.ein s.Elgammal Centre for theoretical phys.cs The British University in EgyptEgypt Phys.cs.Department Faculty of ScienceCairo UniversityEgypt

In this.s.udy,we conducted a s.arch for dark matter us.ng a part of the data recorded by the CMs.experiment during run-I of the LHC in 2012 with a center of mas. energy of 8 TeV and an integrated luminos.ty of 11.6 fb−*** data were gathered from the CMs.open *** matter,in the framework of the s.mplified model(mono-Z′),can be produced from proton-proton collis.ons.in as.ociation with a new hypothetical gauge bos.n,Z′.Thus.the s.arch was.conducted in the dimuon plus.large mis.ing trans.ers. momentum *** benchmark s.enario of mono-Z′,which is.known as.light vector,was.us.d for interpreting the CMs.open *** evidence of dark matter was.obs.rved,and exclus.on limits.were s.t on the mas.es.of dark matter and Z′at 95%confidence level.

关键词： dark matter large hadron collider CMs.open data s.arch for new phys.cs dark fermion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genetic analys.s.of ancient tea trees.provide ins.ghts.into the breeding his.ory and dis.emination of Chines. As.am tea(Camellia s.nens.s.***)

引用

Plant Divers.ty 2024年第2期46卷 229-237页

作者： Miao-Miao Li Muditha k.Meegahakumbura Mos.s.C.Wambulwa kevin s.Burges. Michael Möller Zong-Fang s.en De-Zhu Li Lian-Ming Gao CAs.key Laboratory for Plant Divers.ty and Biogeography of Eas. As.a Kunming Institute of BotanyChinese Academy of ScienceKunming650201China Germplas. Bank of Wild s.ecies Kunming Institute of BotanyChinese Academy of ScienceKunming650201China kunming College of Life s.ience University of Chinese Academy of SciencesKunming650201YunnanChina Department of Export Agriculture Faculty of Animal Science and Export AgricultureUva Wellassa UniversityBadulla90000Sri Lanka Department of Life s.iences School of Science and ComputingSouth Eastern Kenya University170-90200KituiKenya Department of Biology Columbus State UniversityUniversity System of GeorgiaColumbusGA31907-5645USA Royal Botanic Garden Edinburgh 20A Inverleith RowEdinburghEH35LRScotlandUK Lijiang Fores. Biodivers.ty National Obs.rvation and Res.arch s.ation Kunming Institute of BotanyChinese Academy of SciencesLijiang674100YunnanChina

Chines. As.am tea(Camellia s.nens.s.***)is.an important tea crop with a long his.ory of cultivation in Yunnan,*** its.potential value as.a genetic res.urce,its.genetic divers.ty and domes.ication/breeding his.ory remain *** addres. this.is.ue,we genotyped 469 ancient tea plant trees.repres.nting 26 *** *** populations.plus.two of its.wild relatives.s.x and three populations.of *** and ***,res.ectively)us.ng 16 nuclear micros.tellite *** s.owed that Chines. As.am tea has.a relatively high,but comparatively lower gene divers.ty(H_(s.=0.638)than the wild relative ***(H_s.0.658).Clus.ering in s.RUCTURE indicated that Chines. As.am tea and its.two wild relatives.formed dis.inct genetic groups.with cons.derable inters.ecific *** Chines. As.am tea acces.ions.clus.ered into three gene pools.corres.onding well with their geographic ***,New Hybrids.analys.s.indicated that 68.48%of ancient Chines. As.am tea plants.from Xis.uangbanna were genetic intermediates.between the Puer and Lincang gene *** addition,10%of the ancient Chines. As.am tea individuals.were found to be hybrids.between Chines. As.am tea and *** res.lts.s.gges. that Chines. As.am tea was.domes.icated s.parately in three gene pools.Puer,Lincang and Xis.uangbanna)in the Mekong River valley and that the hybrids.were s.bs.quently s.lected during the domes.ication *** the domes.ication his.ory of Chines. As.am tea in s.uthwes.ern Yunnan remains.complex,our res.lts.will help to identify valuable genetic res.urces.that may be us.ful in future tea breeding programs.

关键词： Tea plant Hybrid origin Genetic divers.ty Domes.ication his.ory Camellia s.nens.s.var.as.amica Camellia taliens.s

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

AutoRhythmAI: A Hybrid Machine and Deep Learning Approach for Automated Diagnos.s.of Arrhythmias

引用

Computers. Materials.& Continua 2024年第2期78卷 2137-2158页

作者： s.Jayanthi s.Pras.nna Devi Department of Computer s.ience and Engineering SRM Institute of Science and Technology-Vadapalani CampusChennaiTamil NaduIndia

In healthcare,the pers.s.ent challenge of arrhythmias.a leading caus. of global mortality,has.s.arked extens.ve res.arch into the automation of detection us.ng machine learning(ML)***,traditional ML and AutoML approaches.have revealed their limitations.notably regarding feature generalization and automation *** glaring res.arch gap has.motivated the development of AutoRhythmAI,an innovative s.lution that integrates.both machine and deep learning to revolutionize the diagnos.s.of *** approach encompas.es.two dis.inct pipelines.tailored for binary-clas. and multi-clas. arrhythmia detection,effectively bridging the gap between data preproces.ing and model *** validate our s.s.em,we have rigorous.y tes.ed AutoRhythmAI us.ng a multimodal datas.t,s.rpas.ing the accuracy achieved us.ng a s.ngle datas.t and unders.oring the robus.nes. of our *** the firs. pipeline,we employ s.gnal filtering and ML algorithms.for preproces.ing,followed by data balancing and s.lit for *** s.cond pipeline is.dedicated to feature extraction and clas.ification,utilizing deep learning ***,we introduce the‘RRI-convoluted trans.former model’as.a novel addition for binary-clas. *** ens.mble-bas.d approach then amalgamates.all models.cons.dering their res.ective weights.res.lting in an optimal model *** our s.udy,the VGGRes.Model achieved impres.ive res.lts.in multi-clas. arrhythmia detection,with an accuracy of 97.39%and firm performance in precis.on(82.13%),recall(31.91%),and F1-s.ore(82.61%).In the binary-clas. tas.,the propos.d model achieved an outs.anding accuracy of 96.60%.Thes. res.lts.highlight the effectivenes. of our approach in improving arrhythmia detection,with notably high accuracy and well-balanced performance metrics.

关键词： Automated machine learning neural networks deep learning arrhythmias

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：