检索结果-南通市图书馆

Frontiers of Structural and Civil Engineering 2021年第5期15卷 1277-1291页

作者： ali NEMATZADEH Burcu AYTEKIN ali mardanl-aghabaglou Department of Civil Engineering Bursa Uludag UniversityNilufer-Bursa 16059Turkey

In this paper,the effect of usage of the permeability reducing admixture(PRA)having different action mechanisms on hardened state properties of cementitious systems containing mineral additives is *** this aim,three commercial PRAs were used during *** effective parameters in the first and third PRAs were air-entraining and high-rate air-entraining,*** second one contained the insoluble calcium carbonate residue and had a small amount of the air-entraining *** mixes with binary and ternary cementitious systems were prepared by partially replacing cement with fly ash and *** hardened state properties of mortar mixtures such as compressive strength,ultrasonic pulse velocity,water absorption,drying shrinkage and freeze-thaw resistance were *** ternary cement-based mixture having both fly ash and metakaolin was selected as the most successful mineral-additive bearing mix in regard to hardened state *** this sense,PRA-B,with both insoluble residues and a small amount of air-entraining properties,showed the best performance among the mixtures containing *** combined use of mineral additive and PRA had a more positive effect on the properties of the mixes.

关键词： cementitious system mineral additive permeability reducing admixture mechanical properties durability performance

MARIE:One-Stage Object Detection Mechanism for Real-Time Identifying of Firearms

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

Computer Modeling in Engineering & Sciences 2025年第1期142卷 279-298页

作者： Diana Abi-Nader Hassan Harb ali Jaber ali Mansour Christophe Osswald Nour Mostafa Chamseddine Zaki Computer Science Department Faculty of SciencesLebanese UniversityBeirut146404Lebanon College of Engineering and Technology American University of the Middle EastEgaila54200Kuwait Lab-STICC CNRS UMR 6285ENSTA-BretagneBrest29200France

Security and safety remain paramount concerns for both governments and individuals *** today’s context,the frequency of crimes and terrorist attacks is alarmingly increasing,becoming increasingly intolerable to ***,there is a pressing need for swift identification of potential threats to preemptively alert law enforcement and security forces,thereby preventing potential attacks or violent *** advancements in big data analytics and deep learning have significantly enhanced the capabilities of computer vision in object detection,particularly in identifying *** paper introduces a novel automatic firearm detection surveillance system,utilizing a one-stage detection approach named MARIE(Mechanism for Realtime Identification of Firearms).MARIE incorporates the Single Shot Multibox Detector(SSD)model,which has been specifically optimized to balance the speed-accuracy trade-off critical in firearm detection *** SSD model was further refined by integrating MobileNetV2 and InceptionV2 architectures for superior feature extraction *** experimental results demonstrate that this modified SSD configuration provides highly satisfactory performance,surpassing existing methods trained on the same dataset in terms of the critical speedaccuracy *** these innovations,MARIE sets a new standard in surveillance technology,offering a robust solution to enhance public safety effectively.

关键词： Firearm and gun detection single shot multi-box detector deep learning one-stage detector MobileNet inception convolutional neural network

Vagus nerve stimulation in intracerebral hemorrhage:the need for further research

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第11期20卷 3213-3214页

作者： Sheharyar S.Baig ali N.ali Arshad Majid Sheffield Institute for Translational Neuroscience Division of NeuroscienceThe University of SheffieldSheffieldUK

Vagus nerve stimulation(VNS)and stroke:Stroke is the second leading cause of death and the third leading cause of disability worldwide(Baig et al.,2023).There have been significant paradigm shifts in the management of acute ischemic stroke through mechanical *** chronic ischemic stroke,invasive VNS paired with rehabilitation is associated with a significant increase in upper limb motor recovery and is FDA-approved(Baig et al.,2023).There are no treatments of similar efficacy in acute intracerebral hemorrhage(ICH)where several promising trials,e.g.,TICH-2,STOP-AUST,and TRAIGE did not show improvements in functional outcomes(Puy et al.,2023).

关键词： stimulation acute

EFFECT OF POLYMER/CEMENT RATIO AND CURING REGIME ON POLYMER MODIFIED MORTAR PROPERTIES

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

Journal of Green Building 2020年第3期15卷 177-193页

作者： Daniel Hatungimana Şemsi Yazıcı ali Mardani-aghabaglou Department of Civil Engineering Eng.FacultyEge UniversityBornova-IzmirTurkey Department of Civil Engineering University of Burundi2700 BujumburaBurundi Civil Engineering Department Eng.FacultyBursa UludağUniversityNilüfer-BursaTurkey

Cement is the most consumed building material in the ***,cement manufacture is responsible for 5-7%of the world CO_(2)*** this paper,cement was partially replaced by styrene-butadiene rubber(SBR)polymeric latex in order to reduce cement ***,effects of SBR addition on the strength and physical properties of plain mortar exposed to three different curing regimes are *** different curing regimes were applied to the 40×40×160 mm prismatic mortar specimens:(Ⅰ):Specimens were cured in water until the test age(CW),(Ⅱ):after demoulding,specimens were immersed in water for 2 days and kept in ambient temperature until the time of the test(2DWA)and(Ⅲ)involved 2 days of water curing followed by 1 day in an oven at 50℃and subsequentely placing in ambient temperature until the test time(2W1OA).Results showed that combin-ing 2 days of water curing followed by ambient temperature curing(2DWA)along with 3%SBR polymer content showed good performance in terms of compressive strength,water absorption and void ***,a good performance in terms of flexural strength was observed by combining 2W1OA curing regime with 2%SBR ***,the detrimental effect of water curing regime(CW)in terms of compressive and flexural strength was also observed with the increase of SBR ratio.

关键词： SBR CO_(2)emissions curing regime strength

EFFECT OF RECYCLED CONCRETE AGGREGATE QUaliTY ON PROPERTIES OF CONCRETE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2020年第2期15卷 57-69页

作者： Daniel Hatungimana Semsi Yazıci ali Mardani-aghabaglou Department of Civil Engineering Eng.FacultyEge UniversityBornova-IzmirTurkey Department of Civil Engineering University of Burundi2700 BujumburaBurundi Civil Engineering Department Eng.FacultyBursa UludağUniversityNilüfer-BursaTurkey

The possibility of the use of recycled aggregates from the construction industry in green concrete production is of increasing importance to reduce the negative environmental impact associated with construction and demolition *** objective of this study is to investigate the effect of recycled concrete aggregate(RCA)quality on the properties of hardened concrete properties such as compressive strength,splitting tensile strength,density,water absorption capacity and porosity accessible to *** RCA used in this study was obtained from the crushing of waste concrete with two different compressive strengths(LRCA obtained from the crushing of waste concrete having compressive strengths below 30 MPa and HRCA obtained from the crushing of waste concrete having compressive strengths above 30 MPa).The natural coarse limestone aggregate was 100%replaced with coarse LRCA and *** a result of the study,the use of 100%HRCA and%100 LRCA instead of limestone coarse aggregate in the concrete adversely affected its mechanical and physical *** addition,HRCA showed better performance in terms of compressive strength,tensile strength,water absorption and porosity compared to the use of ***,the percentage of adhered mortar on the surface of LRCA and HRCA was analyzed using a computerized micro tomography device,and it was found that the percentages of attached mortar and aggregates are 61%and 35.5%for LRCA,whilst the attached mortar and aggregate contents for HRCA are 45.9%and 53.7%,respectively.

关键词： X-Ray computed micro tomography recycled concrete aggregate adhered mortar

A Synergistic Multi-Attribute Decision-Making Method for Educational Institutions Evaluation Using Similarity Measures of Possibility Pythagorean Fuzzy Hypersoft Sets

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2025年第1期142卷 501-530页

作者： Khuram ali Khan Saba Mubeen Ishfaq Atiqe Ur Rahman Salwa El-Morsy Department of Mathematics University of SargodhaSargodha40100Pakistan Department of Mathematics University of Management and TechnologyLahore54000Pakistan Department of Mathematics College of ScienceQassim UniversityBuraydah51452Saudi Arabia

Due to the numerous variables to take into account as well as the inherent ambiguity and uncertainty,evaluating educational institutions can be *** concept of a possibility Pythagorean fuzzy hypersoft set(pPyFHSS)is more flexible in this regard than other theoretical fuzzy set-like models,even though some attempts have been made in the literature to address such *** study investigates the elementary notions of pPyFHSS including its set-theoretic operations union,intersection,complement,OR-and *** results related to these operations are also modified for ***,the similarity measures between pPyFHSSs are formulated with the assistance of numerical examples and ***,an intelligent decision-assisted mechanism is developed with the proposal of a robust algorithm based on similarity measures for solving multi-attribute decision-making(MADM)problems.A case study that helps the decision-makers assess the best educational institution is discussed to validate the suggested *** algorithmic results are compared with the most pertinent model to evaluate the adaptability of pPyFHSS,as it generalizes the classical possibility fuzzy set-like theoretical ***,while considering significant evaluating factors,the flexibility of pPyFHSS is observed through structural comparison.

关键词： Hypersoft set Pythagorean fuzzy hypersoft set computational complexity multi-attribute decision-making optimization similarity measures uncertainty

EFFECT OF STYRENE-BUTADIENE COPOLYMER(SBR)LATEX ON MECHANICAL AND TRANSPORT PROPERTIES OF PORTLAND CEMENT MORTAR

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2020年第4期15卷 185-197页

作者： Daniel Hatungimana Şemsi Yazici Şevket Orhan ali Mardani-aghabaglou Department of Civil Engineering Eng.Sciences FacultyUniversity of Burundi2700 BujumburaBurundi Department of Civil Engineering Eng.FacultyEge UniversityBornova-İzmirTurkey Department of Civil Engineering Eng.FacultyBursa UludağUniversityNilüfer-BursaTurkey

Portland cement is extensively used as a binder in concrete ***,with Portland cement production,5%of the natural resources used in this produc-tion are consumed,constituting 5-7%of the total CO_(2)*** order to mitigate the environmental problems associated with cement production,styrene-butadiene rubber latex was used as cement replacement up to 20%.In this study,compres-sive strength,flexural strength,unit weight,water absorption,open porosity,water sorptivity and the chloride ion permeability of Portland cement mortar mixtures modified by styrene-butadiene rubber(SBR)polymeric latex were *** this purpose,the sand/cement ratio and the water/cement ratio were kept constant as 3/1 and 0.5,*** addition to the control mixture containing no polymer,1,2,3,5,10 and 20 wt.%of cement was replaced with *** this way,seven mortar mixtures were *** curing(wet cure and dry cure)method was applied to the mortar *** showed that up to a 5%replacement level,it is possible to improve the mechanical properties of cement mortars with SBR latex ***,at a 10%and 20%replacement level,SBR had a signifi-cant detrimental effect on the mechanical properties of polymer modified ***,the transport properties decreased with the incorporation rate of SBR latex and the detrimental effect of SBR replacement was more pronounced in 20%SBR mortar mixtures.

关键词： mechanical properties transport properties SBR latex

PERFORMANCE OF STEEL MICRO FIBER REINFORCED MORTAR MIXTURES CONTAINING PLAIN,BINARY AND TERNARY CEMENTITIOUS SYSTEMS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2016年第4期11卷 109-130页

作者： ali Mardani-aghabaglou Cihat Yüksel Hojjat Hosseinnezhad Kambiz Ramyar Department of Civil Engineering Eng.FacultyUludağUniversityNilüfer-BursaTurkey epartment of Civil Engineering Eng.FacultyEge UniversityBornova-İzmirTurkey

Steel micro fibers provide strengthening,toughening and durability improve-ment mechanisms in cementitious ***,there is not much data in the literature regarding how the extent of their effectiveness changes depend-ing on the type of matrix being *** clarifying this point,the influ-ence of a constant volumetric ratio(1%)of 6 mm long steel micro fibers on the performance of 5 mortar mixtures was investigated and were prepared using plain,binary and ternary cementitious systems.A total of 10 mixtures were *** mineral admixtures used in the study include silica fume(SF),metakaolin(MK)and a Class C fly ash(FA).While the replacement levels of SF and MK were 10%by weight of the total mass of the binder,this ratio was chosen as 30%for *** addition to the behavior of the mixtures under compressive,flexural and impact loads,abrasion,water absorption,chloride ion penetration,freez-ing-thawing resistance and drying shrinkage characteristics of the mixtures were *** results indicate that generally the refinement in the pore struc-ture of the matrix provided by mineral admixtures and the increase in resistance against growth and coalescence of micro-cracks provided by fibers produce a syn-ergistic effect and improve the investigated performances of the mixtures.

关键词： steel micro fiber mineral admixtures mechanical and transport properties durability performance

DURABILITY PERFORMANCE AND DIMENSIONAL STABILITY OF POLYPROPYLENE FIBER REINFORCED CONCRETE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2018年第2期13卷 20-41页

作者： ali Mardani-aghabaglou SüleymanÖzen Muhammet Gökhan Altun Department of Civil Engineering Uludag UniversityNilufer-BursaTurkey

In this study, the durability performance and dimensional stability of polypropylene fiber reinforced concrete mixture were investigated. For this purpose, two series of concrete mixtures, including a 0.45 water/cement ratio was prepared both in the absence and presence of fiber. A CEMI 42.5 R type portland cement and crushed limestone aggregate with a maximum particle size of 25 mm were used. In addition to the control mixture without fiber, three different concrete mixtures were prepared by adding polypropylene fiber as 0.4%, 0.8% and 1% of total volume into the mixture. The time-dependent fresh state properties, strength, ultrasonic pulse velocity, transport properties, drying shrinkage and freeze-thaw resistance of concrete mixtures, sodium sulfate attack and abrasion were investigated comparatively. Test results demonstrated that utilization of fiber affected the fresh properties of the concrete mixtures negatively. However, the 0.8% fiber-bearing mixture showed the highest performance in terms of durability and dimensional stability. Beyond this utilization ratio, the durability performance of the concrete mixture was negatively affected. The risk of nonhomogeneous dispersion of the fiber in the mixture was relatively high in the excess fiber-bearing mixture. Consequently, with the formation of flocculation in the mixture the void ratio of concrete mixture increased.

关键词： fresh properties durability performance dimensional stability polypropylene fiber reinforced concrete

EFFECT OF CEMENT FINENESS ON PROPERTIES OF CEMENTITIOUS MATERIALS CONTAINING HIGH RANGE WATER REDUCING ADMIXTURE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2017年第1期12卷 142-167页

作者： ali Mardani-aghabaglou Arif Emre Son Burak Felekoglu Kambiz Ramyar Department of Civil Engineering Eng.FacultyUludağUniversityNilüfer-BursaTurkey Department of Civil Engineering Eng.FacultyEge UniversityBornova-IzmirTurkey Department of Civil Engineering Eng.FacultyDokuz Eylul UniversityBuca-IzmirTurkey

The effect of cement fineness on the fresh state and rheological properties as well as compressive strength of cementitious systems was investigated.A CEM I 42.5R portland cement containing 7.92%C_(3)A and sulfate resisting cement containing 3.58%C(3)A were *** cements were ground to 4 different Blaine finenesses,ranging from 2800 to 4500 cm^(2)/*** the absence of water-reducing admixture,the water requirement of mixtures increased with an increase in the cement ***,the fresh state properties of the mixtures were affected ***,surprisingly,a reverse behavior was observed in the mixtures containing water-reducing admixtures,that is,an increase of the cement fineness increased the effectiveness of the admixture;consequently,the fresh state properties of the mixtures were *** seems to have been caused from the higher adsorption of the admixture on finer cement grains than on the coarser ***,as expected,the strength of the mortar and concrete mixtures increased along with the increase in cement fineness and its C3A content.

关键词： cement-admixture compatibility fresh properties rheological parameters