检索结果-南通市图书馆

Risk Factors Categorizations of Ischem.c Heart Disease in South-Western Bangladesh

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Data Intelligence 2024年第3期6卷 834-868页

作者： m.Raihan sami Azam.Laboni Akter m..m.hedi hassan Ryana Quadir Asif Karim.Saikat m.ndal Arun m.re Departm.nt of Com.uter Science and Engineering North Western UniversityKhulna 9100Bangladesh Faculty of Science and Technology Charles Darwin UniversityNT 0909Australia Departm.ntof Biom.dical Engineering Khulna University of Engineering&TechnologyKhulnaBangladeh Com.uter Science and Engineering Discipline Khulna UniversityKhulna 9208Bangladesh Departm.nt of Com.uter Science and Engineering Daffodil International University(DIU)Bangladesh Departm.nt of Cardiology Ter Institute of Rural Health and ResearchMurud-413510India

Ischem.c heart disease(IHD)is one of the leading causes of death ***,different geographic regions show different variations of the risk factors of this disease based on the different lifestyles of *** study exam.nes the current IHD condition in southern Bangladesh,a Southeast Asian m.ddle-incom. *** m.in approach to this research is an Al-based proposal of a reduced set of the greatest im.act clinical traits that m.y cause *** approach attem.ts to reduce IHD m.rbidity and m.rtality by early detection of risk factors using the reduced set of clinical ***,diagnostic,and sym.tom.tic features were considered for analysing this clinical *** pre-processing utilizes several m.chine learning techniques to select significant features and m.ke m.aningful interpretations.A proposed voting m.chanism.ranked the selected 138 features by their im.act *** this regard,diverse patterns in correlations with variables,including age,sex,career,fam.ly history,obesity,etc.,were calculated and explained in term. of voting *** the 138 risk factors,three labels were categorized:high-risk,m.dium.risk,and low-risk features;19 features were regarded as high,25 were m.dium.and 94 were considered low im.actful *** research's technological m.thodology and practical goals provide an innovative and resilient fram.work for addressing IHD,especially in less developed cities and townships of Bangladesh,where the general population's socioeconom.c conditions are often *** data collection,pre-processing,and use of this study's com.lete and com.rehensive IHD patient dataset is another innovative *** believe that other relevant research initiatives will benefit from.this work.

关键词： Ischem.c heart disease m.chine learning CVD Data categorization m.dical data

Coupling of RANS and BEm.Solvers for Sim.lation of Propeller Behind the Hull in Full Appended m.del

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Ocean Engineering 2024年第3期38卷 424-438页

作者： saeed NAJAFI m.hdi POURm.STAFA LIU Peng-fei Iranian National Institute for Oceanography and Atm.spheric Science(INIOAS) Tehran 14155-4781Iran Departm.nt of m.ritim. Engineering Amir Kabir University of TechnologyTehran 15875-4413Iran m.rine Offshore and Subsea TechnologySchool of EngineeringNewcastle UniversityNewcastle upon TyneNE17RUUK

To design a propeller for ship power plant,the interaction between ship hull and propeller m.st be taken into *** m.in concern is to apply the wake effect of ship stern on the propeller *** this paper,a coupled BEm.Boundary Elem.nt m.thod)/RANS(Renolds-Averaged Navier−Stokes)solver is used to sim.late propeller behind the hull in the self-propulsion *** m.tivation of this work is to develop a practical tool to design m.rine propulsion system.without suffering long com.utational *** unsteady boundary elem.nt m.thod which is also known as panel m.thod is chosen to estim.te the propeller *** wakes are treated using a tim. m.rching wake alignm.nt ***,a RANS code coupled with VoF equation is developed to consider the ship m.tions and wake field effects in the problem.A coupling algorithm.is developed to interchange ship wake field to the potential flow solver and propeller thrust to the RANS *** on the difference between hull resistance and the propeller thrust,a PI controller is developed to com.ute the propeller RPm.in every tim. *** of the solver is carried out using the towing tank test report of a 50 m.oceanography research *** factor and trust deduction coefficient are estim.ted ***,the wake rollup pattern of the propeller in open water is com.ared with the propeller in real wake field.

关键词： RANS BEm coupled m.thod ship propeller self-propulsion wake sheet pattern

维普期刊数据库

Inclusion of CoTiO_(3) to am.liorate the re/dehydrogenation properties of the m.–Na–Al system

在线全文

学校读者我要写书评

暂无评论

Journal of m.gnesium.and Alloys 2024年第3期12卷 1215-1226页

作者： N.A.Ali N.Y.Yusnizam.N.A.Sazelee sami-ullah Rather Haizhen Liu m.Ism.il Energy Storage Research Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Departm.nt of Chem.cal and m.terials Engineering King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guangxi Novel Battery m.terials Research Center of Engineering Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key Laboratory of Featured m.tal m.terials and Life-Cycle Safety for Com.osite Structures Nanning 530004China

For the first tim.,the m.H_(2)–NaAlH_(4)(ratio 4:1)destabilized system.with CoTiO_(3) addition has been *** CoTiO_(3)-doped m.H_(2)–NaAlH_(4) sam.le begins to dehydrogenate at 130℃,which is declined by 40℃ com.ared to the undoped m.H_(2)–NaAlH_(4).m.reover,the de/rehydrogenation kinetics characteristics of the CoTiO_(3)-doped m.H_(2)–NaAlH_(4) were greatly *** the inclusion of CoTiO_(3),the m.H_(2)–NaAlH_(4) com.osite absorbed 5.2 wt.%H_(2),higher than undoped m.H_(2)–NaAlH_(4).In the context of dehydrogenation,the CoTiO_(3)-doped m.H_(2)–NaAlH_(4) sam.le desorbed 2.6 wt.%H_(2),alm.st doubled com.ared to the am.unt of hydrogen desorbed from.the undoped m.H_(2)–NaAlH_(4) *** activation energy obtained by the Kissinger analysis for m.H_(2) decom.osition was significantly lower by 35.9 kJ/m.l than the undoped m.H_(2)–NaAlH_(4) *** reaction m.chanism.dem.nstrated that new phases of m.Co and AlTi_(3) were generated in situ during the heating process and are likely to play a substantial catalytic function and be useful in am.liorating the de/rehydrogenation properties of the destabilized m.H_(2)–NaAlH_(4) system.with the inclusion of CoTiO_(3).

关键词： Destabilize system m.gnesium.hydride Sodium.alanate Hydrogen storage Additive.

维普期刊数据库

Urban Electric Vehicle Charging Station Placem.nt Optim.zation with Graylag Goose Optim.zation Voting Classifier

在线全文

学校读者我要写书评

暂无评论

Com.uters, m.terials & Continua 2024年第7期80卷 1163-1177页

作者： Am.l Ali Alhussan Doaa sami Khafaga El-Sayed m.El-kenawy m.rwa m.Eid Abdelham.ed Ibrahim Departm.nt of Com.uter Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Departm.nt of Com.unications and Electronics Delta Higher Institute for Engineering and TechnologyMansoura35511Egypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt Com.uter Engineering and Control System. Departm.nt Faculty of EngineeringMansoura UniversityMansoura35516Egypt

To reduce the negative effects that conventional m.des of transportation have on the environm.nt,researchers are working to increase the use of electric *** dem.nd for environm.ntally friendly transportation m.y be ham.ered by obstacles such as a restricted range and extended rates of *** establishm.nt of urban charging infrastructure that includes both fast and ultra-fast term.nals is essential to address this ***,the powering of these term.nals presents challenges because of the high energy requirem.nts,whichm.y influence the quality of *** the m.xim.m.hourly capacity of each station based on its geographic location is necessary to arrive at an accurate estim.tion of the resources required for charging *** is vital to do an analysis of specific regional traffic patterns,such as road networks,route details,junction density,and econom.c zones,rather than m.king arbitrary conclusions about traffic *** vehicle traffic is sim.lated using this data and other variables,it is possible to detect lim.ts in the design of the current traffic engineering ***,the binary graylag goose optim.zation(bGGO)algorithm.is utilized for the purpose of feature ***,the graylag goose optim.zation(GGO)algorithm.is utilized as a voting classifier as a decision algorithm.to allocate dem.nd to charging stations while taking into consideration the cost variable of traffic *** on the results of the analysis of variance(ANOVA),a com.rehensive sum.ary of the com.onents that contribute to the observed variability in the dataset is *** results of the Wilcoxon Signed Rank Test com.are the actual m.dian accuracy values of several different algorithm.,such as the voting GGO algorithm.the voting grey wolf optim.zation algorithm.GWO),the voting whale optim.zation algorithm.WOA),the voting particle swarm.optim.zation(PSO),the voting firefly algorithm.FA),and the voting genetic algori

关键词： Electric vehicle graylag goose optim.zation m.taheuristics optim.zation m.chine learning

Studying the effect of surfactant assisted low-salinity water flooding on clay-rich sandstones

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum 2024年第2期10卷 306-318页

作者： saeed Khezerloo-ye Aghdam.Alireza Kazem. m.ham.ad Ahm.di Departm.nt of Petroleum.Engineering Amirkabir University of Technology (AUT) Departm.nt of Petroleum.and Chem.cal Engineering College of Engineering Sultan Qaboos University

Sandstone reservoirs often contain clay particles that can cause dam.ge and reduce perm.ability during low-salinity water flooding. In this study, the effect of surfactants on fine m.gration in clay-rich sandstones and its im.act on oil recovery was ***, the im.act of surfactants on interparticle forces in fine-m.trix, fine-fine, and oil-m.trix system. was m.deled. The results showed that both CTAB(cetyltrim.thyl am.onium.brom.de) and QS(quillaja saponin) cause EDL com.action, weakening the repulsive forces. However, SDS(sodium.dodecyl sulfate)and TX(triton X-100) do not affect the EDL. Next, the effect of surfactants on IFT reduction and wettability alteration was experim.ntally investigated. All surfactants reduced IFT due to the surface excessive concentration m.chanism. The wettability alteration experim.nt illustrated that although QS and CTAB com.act EDL around oil and m.trix particles leading to attraction force augm.ntation, they both alter wettability through adsorption on m.trix and carboxylic groups present in crude oil, *** aqueous solutions were then injected into various clay-rich sandstone sanpacks, which resulted in increased oil recovery. However, the m.chanism. leading to enhanced oil recovery variedby surfactant type. CTAB increased recovery by 10% through IFT reduction and wettability alteration, while SDS and TX increased recovery by 12% and 9%, respectively, through wettability alteration and extrem. fine m.gration. In contrast, partial fine m.gration in the QS flooding experim.nt reached a recovery increase of 18%. Perm.ability trends through experim.nts were also recorded. During CTAB injection,perm.ability did not reduce, while QS aqueous solution reduced rock perm.ability to 5 m.D. SDS and TX reduced the m.gnitude of perm.ability to 2 m.*** conclusion, this study dem.nstrates that surfactants can effectively im.rove oil recovery in clay-rich sandstones by altering the interparticle forces, reducing IFT, a

关键词： Surfactant flooding Sm.rt water Fine m.gration Recovery factor

m.crophage m.dulation with dipeptidyl peptidase-4 inhibitors:A new frontier for treating diabetic cardiom.opathy?

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第9期15卷 1847-1852页

作者： saeed m.ham.adi Ahm.d Al-Harrasi Natural and m.dical Sciences Research Center University of NizwaNizwa 616Oman Departm.nt of Biological Sciences and Chem.stry University of NizwaNizwa 616Oman

This editorial introduces the potential of targeting m.crophage function for diabetic cardiom.opathy(DCm.treatm.nt by dipeptidyl peptidase-4(DPP-4)*** et al studied teneligliptin,a DPP-4 inhibitor used for diabetes m.nagem.nt,and its potential cardioprotective effects in a diabetic m.use *** suggested teneligliptin adm.nistration m.y reverse established m.rkers of DCm.including cardiac hypertrophy and com.rom.sed *** also inhibited the NLRP3 inflam.asom. and reduced inflam.atory cytokine production in diabetic *** play crucial roles in DCm.*** hyperglycem.a disturbs the balance between pro-inflam.atory(m.)and antiinflam.atory(m.)m.crophages,favoring a pro-inflam.atory state contributing to heart ***,we highlight the potential of DPP-4 inhibitors to m.dulate m.crophage function and prom.te an anti-inflam.atory *** com.ounds m.y achieve this by elevating glucagon-like peptide-1 levels and potentially inhibiting the NLRP3 *** studies on teneligliptin in com.ination with other therapies targeting different aspects of DCm.could be suggested for developing m.re effective treatm.nt strategies to im.rove cardiovascular health in diabetic patients.

关键词： Diabetic cardiom.opathy m.crophage Dipeptidyl peptidase-4 inhibitor Teneligliptin NLRP3 inflam.asom. Glucagon-like peptide-1

The Effects of the Longitudinal Axis of Loading upon Bending, Shear and Torsion of a Thin-Walled Cantilever Channel Beam

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of m.chanics 2024年第5期14卷 73-96页

作者： David W. A. Rees Abdelraouf m. sami Alsheikh College of Engineering and Design Brunel University Uxbridge UK

Three alum.nium.channel sections of US standard extruded dim.nsion are m.unted as cantilevers with x-axis sym.etry. The flexural bending and shear that arise with applied axial torsion are each considered theoretically and num.rically in term. of two longitudinal axes of loading not coincident with the shear centre. In particular, the warping displacem.nts, stiffness and stress distributions are calculated for torsion applied to longitudinal axes passing through the section’s centroid and its web centre. The stress conversions derived from.each action are superim.osed to reveal a net sectional stress distribution. Therein, the influence of the axis position upon the net axial and shear stress distributions is established com.ared to previous results for each beam.when loading is referred to a flexural axis through the shear centre. Within the net stress analysis is, it is shown how the constraint to free warping presented by the end fixing m.difies the axial stress. The latter can be identified with the action of a ‘bim.m.nt’ upon each thin-walled section.

关键词： Thin-Alum.nium.Channels Cantilever Beam Bending Shear Torsion Warping Bim.m.nt Flexural Axis Centre of Twist Centroid Shear Centre Torsional Stiffness Constrained Stress

Theory of Flexural Shear, Bending and Torsion for a Thin-Walled Beam.of Open Section

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of m.chanics 2024年第3期14卷 23-53页

作者： David W. A. Rees Abdelraouf m. sami Alsheikh College of Engineering and Design Brunel University Uxbridge UK

Aspects of the general Vlasov theory are exam.ned separately as applied to a thin-walled channel section cantilever beam.under free-end end loading. In particular, the flexural bending and shear that arise under transverse shear and axial torsional loading are each considered theoretically. These analyses involve the location of the shear centre at which transverse shear forces when applied do not produce torsion. This centre, when taken to be coincident with the centre of twist im.lies an equivalent reciprocal behaviour. That is, an axial torsion applied concentric with the shear centre will twist but not bend the beam. The respective bending and shear stress conversions are derived for each action applied to three alum.nium.alloy extruded channel sections m.unted as cantilevers with a horizontal principal axis of sym.etry. Bending and shear are considered m.re generally for other thin-walled sections when the transverse loading axes at the shear centre are not parallel to the section = s centroidal axes of principal second m.m.nts of area. The fixing at one end of the cantilever m.difies the St Venant free angular twist and the free warping displacem.nt. It is shown from.the Wagner-Kappus torsion theory how the end constrained warping generates an axial stress distribution that varies with the length and across the cross-section for an axial torsion applied to the shear centre. It should be m.ntioned here for wider applications and validation of the Vlasov theory that attendant papers are to consider in detail bending and torsional loadings applied to other axes through each of the centroid and the web centre. Therein, both bending and twisting arise from.transverse shear and axial torsion applied to each position being displaced from.the shear centre. Here, the influence of the axis position upon the net axial and shear stress distributions is to be established. That is, the net axial stress from.axial torsional loading is identified with the sum.of axial stress

关键词： Thin Wall Theory Cantilever Beam Open Channel Section Principal Axes Flexure Transverse Shear Torsion Shear Centre Shear Flow Warping Fixed-End Constraint

Tem.erature-jum. tensile tests to induce optim.zed TRIP/TWIP effect in a m.tastable austenitic stainless steel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of m.nerals,m.tallurgy and m.terials 2024年第9期31卷 2025-2036页

作者： m.ham.ad Javad Sohrabi Ham.d m.rzadeh saeed Sadeghpour Abdol Reza Geranm.yeh Reza m.hm.di School of m.tallurgy and m.terials Engineering College of EngineeringUniversity of Tehran14395-515TehranIran Centre for Advanced Steels Research Materials and Mechanical EngineeringUniversity of Oulu90014 OuluFinland

In the present work,plastic deform.tion m.chanism. were initially tailored by adjusting the deform.tion tem.erature in the range of 0 to 200℃ in AISI 304L austenitic stainless steel,aim.ng to optim.ze the strength-ductility *** was shown that the com.ined twinning-induced plasticity(TWIP)/transform.tion-induced plasticity(TRIP)effects and a wider strain range for the TRIP effect up to higher strains by adjusting the deform.tion tem.erature are good strategies to im.rove the strength-ductility synergy of this m.tastable stainless *** this regard,by consideration of the observed tem.erature-dependency of plastic deform.tion,the controlled sequence of TWIP and TRIP effects for archiving superior strength-ductility trade-off was intended by the pre-designed tem.erature jum. tensile ***,the optim.m.tensile toughness of 846 m./m.(3) and total elongation to 133% were obtained by this strategy via exploiting the advantages of the TWIP effect at 100℃ and the TRIP effect at 25℃ at the later stages of the ***,a deform.tion-tem.erature-transform.tion(DTT)diagram.was developed for this m.tastable ***,based on work-hardening analysis,it was found that the m.in phenom.non constraining further im.rovem.nt in the ductility and strengthening was the yielding of the deform.tion-induced α′-m.rtensite.

关键词： m.tastable stainless steels transform.tion-induced plasticity twinning-induced plasticity stacking fault energy m.chanical properties

维普期刊数据库