BAU Journal - Science and Technology最新文献_第6页

CONTROL OF MR DAMPER USING ANFIS AND PID CONTROLLER FOR OPTIMUM VEHICLE RIDE COMFORT 使用反颤器和pid控制器控制Mr阻尼器，以获得最佳的车辆乘坐舒适性

BAU Journal - Science and Technology Pub Date : 2020-12-30 DOI: 10.54729/2959-331x.1001

M. F. Yakhni, M. Ali, M. El-Gohary

引用次数: 0

ACTIVATION OF FLY ASH TO STABILISE LEAD CONTAMINATED SOILS AND SOLUTIONS 粉煤灰活化稳定铅污染土壤及其溶液

BAU Journal - Science and Technology Pub Date : 2020-12-30 DOI: 10.54729/2706-784x.1046

Mabrouk Hassan Arhoma

引用次数: 1

ESSENTIAL CONTROL TO ENVIRONMENTAL REGULATIONS FOR OIL AND GAS INDUSTRY: SPOTLIGHT ON DRILLING PROCESSES IN LEBANON 石油和天然气行业环境法规的基本控制:黎巴嫩钻井过程的焦点

BAU Journal - Science and Technology Pub Date : 2020-12-30 DOI: 10.54729/2706-784x.1042

Rami Harkouss

{"title":"ESSENTIAL CONTROL TO ENVIRONMENTAL REGULATIONS FOR OIL AND GAS INDUSTRY: SPOTLIGHT ON DRILLING PROCESSES IN LEBANON","authors":"Rami Harkouss","doi":"10.54729/2706-784x.1042","DOIUrl":"https://doi.org/10.54729/2706-784x.1042","url":null,"abstract":"At present, environmental legislation bounds the drilling operators in drilling wastes removal. The rapid increasing sensitivity of drilling waste management forced many countries to develop environmental guidelines for their drilling operations. This research studies some sorts of waste produced during upstream petroleum activities, particularly while drilling. After that, many hazards and impacts on the environment are addressed, as well as their principal treatment techniques. This paper gives a modest and theoretical vision over the present environmental standard and waste management design, realized at a universal scale. Studies show that performance fluid management and total fluid management are highly recommended in drilling waste management, taken into consideration the reduction, reuse, recycle, recover, and finally disposal of waste. Then, the technologies that could be suitable for the Lebanese drilling fields would be addressed. Experience proves that techniques and standards of drilling waste management depend highly on climate and sources soil. This research highlights foreign, specialized and suitable regulations for the Lebanese petroleum industry and advises to apply strict punishments that force companies to consider environmental issues. This may assist companies and individual approaches toward coming drilling operations in Lebanon with a concern for the environment.","PeriodicalId":124185,"journal":{"name":"BAU Journal - Science and Technology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122506074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CONCRETE MIX DESIGN USING SIMPLE EQUATIONS 混凝土配合比设计用简单方程

BAU Journal - Science and Technology Pub Date : 2020-12-30 DOI: 10.54729/2706-784x.1043

H. Abdelgader, R. Suleiman

引用次数: 2

CORROSION OF COATED AND UNCOATED STEEL REINFORCEMENT IN CONCRETE 混凝土中涂覆和未涂覆钢筋的腐蚀

BAU Journal - Science and Technology Pub Date : 2020-12-30 DOI: 10.54729/nxzc6026

Jana Abou Shakra, Rouba Joumblat, J. Khatib, A. Elkordi

{"title":"CORROSION OF COATED AND UNCOATED STEEL REINFORCEMENT IN CONCRETE","authors":"Jana Abou Shakra, Rouba Joumblat, J. Khatib, A. Elkordi","doi":"10.54729/nxzc6026","DOIUrl":"https://doi.org/10.54729/nxzc6026","url":null,"abstract":"Corrosion of reinforcing steel is the one of the main causes of deterioration in reinforced concrete structure. During the initial stage of corrosion, the steel volume increases. This creates tensile stresses in the concrete, which can eventually lead to cracking, delamination, and spalling. This potential risk of corrosion in a structure is quite unpredictable. Therefore, this paper examines the influence of accelerated corrosion on the bond between concrete and the coated and uncoated steel bars. The bar coating consisted of epoxy rich in zinc. Six concrete mixes were prepared. Three mixes had cement contents of 300, 400 and 500 Kg/m3 and a water cement ratio of 0.4. In the rest of the mixes, cement was replaced with 10% silica fume and the water to binder ratio was 0.5. The reinforcing bars were placed inside concrete cylinders. After curing for 3 days, the specimens were immersed in a 5% NaCl solution for 7 days while a DC current of 5V flowed through them using a portable power supply. Different tests were conducted such as the accelerated corrosion test (ACT), the pull-out tests, compressive strength, and weight loss. The results show that coating the steel bars while lowering the water cement ratio with the addition of silica fume, reduces the effects of corrosion in reinforced concrete specimens","PeriodicalId":124185,"journal":{"name":"BAU Journal - Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130745529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

CAEE: COMMUNICATION-AWARE, ENERGY-EFFICIENT VM PLACEMENT MODEL FOR MULTI-TIER APPLICATIONS IN LARGE SCALE CLOUD DATA CENTERS Caee:大规模云数据中心中用于多层应用程序的通信感知、节能的vm放置模型

BAU Journal - Science and Technology Pub Date : 2020-12-30 DOI: 10.54729/2959-331x.1013

Soha Rawas, A. Zekri

引用次数: 4

ANTIBACTERIAL EFFECT AND PHYTOCHEMICAL ANALYSIS OF THE SHOOT SYSTEM OF RUBUS CANESCENS DC. GROWING IN LEBANON 红豆芽系统的抑菌作用及植物化学分析。在黎巴嫩种植

BAU Journal - Science and Technology Pub Date : 2020-12-30 DOI: 10.54729/2706-784x.1050

Omar Assafiri, H. Abdallah, Mohammed El-Dakdouki

{"title":"ANTIBACTERIAL EFFECT AND PHYTOCHEMICAL ANALYSIS OF THE SHOOT SYSTEM OF RUBUS CANESCENS DC. GROWING IN LEBANON","authors":"Omar Assafiri, H. Abdallah, Mohammed El-Dakdouki","doi":"10.54729/2706-784x.1050","DOIUrl":"https://doi.org/10.54729/2706-784x.1050","url":null,"abstract":"The misuse of antibiotics followed by improved fitness of resistant strains of infectious microorganisms hindered the efficacy of many known antimicrobial agents, and fueled research for the discovery of novel remedies. The current study aims at assessing the antimicrobial activity and understanding the mechanism of action of Rubus canescens DC. growing wild in Lebanon, as well as qualitatively determining its phytochemical profile. The antibacterial activity, MIC, and MBC of the extracts were evaluated by two-fold dilution. Time-kill curves were plotted to assess the bactericidal activity of the R. canescens DC. extracts against the growth of microorganisms, and TEM images were collected to confirm such effect. Overall, the extracts exhibited good antibacterial activity against MRSA and E. coli but not against S. pneumoniae and K. pneumoniae as determined by measuring the inhibition zones in plate-diffusion assays. TEM images of treated microorganisms revealed that the R. canescens DC. extracts induced irreversible deformations and damage to the cell membranes of the microorganisms leading to the leakage of cytoplasmic components and eventual cell death. Analysis of Time-Kill curves indicated that the extracts induced 100% killing of the test microorganisms within 10-18 h at the respective MBC. Finally, qualitative phytochemical analysis was conducted to decipher the active ingredients in the plant extracts.The current study reports the first data on the antimicrobial activity of different parts of R. canescens DC. Such promising data opens new avenues for broader assessment of the pharmacological profile of the scarcely investigated R. canescens DC.","PeriodicalId":124185,"journal":{"name":"BAU Journal - Science and Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124072616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

DYNAMIC SOIL-STRUCTURE INTERACTION ANALYSIS: DETECTING THE RELIABILITY OF MODELLING THE PILES AS A PLATE ELEMENT FOR A MULTISTORY BUILDING RESTING ON DEEP FOUNDATION 动力土-结构相互作用分析:深基础多层建筑桩作为板单元建模的可靠性检验

BAU Journal - Science and Technology Pub Date : 2020-08-11 DOI: 10.54729/2959-331x.1051

Zeinab F. Zein, Lina Jaber, Yehya Temsah

{"title":"DYNAMIC SOIL-STRUCTURE INTERACTION ANALYSIS: DETECTING THE RELIABILITY OF MODELLING THE PILES AS A PLATE ELEMENT FOR A MULTISTORY BUILDING RESTING ON DEEP FOUNDATION","authors":"Zeinab F. Zein, Lina Jaber, Yehya Temsah","doi":"10.54729/2959-331x.1051","DOIUrl":"https://doi.org/10.54729/2959-331x.1051","url":null,"abstract":"Dynamic soil-structure interaction (SSI) is one of the main subjects that has attracted the attention of researchers in the recent decades. Numerous studies were interested in examining the seismic response of buildings supported on pile footings while including SSI. Most of these studies were simulating the problem by two dimensional models in the plane strain to overcome the usual difficulties encountered in 3D models. Commonly, piles were represented by plate elements of infinite length, disregarding the spacing between piles, and thus overestimating its stiffness. Recently, Plaxis – a finite element softwarehas implemented a new feature known as “the embedded pile row”. Although this latter models the pile as a 2D structural element, it allows the definition of an out-of-plane spacing where the soil can flow around the piles upon keeping a continuous mesh. Many researchers have studied the reliability of the embedded row element and verified its validity. The objective of this paper is to define the limitations of employing the plate feature in soilstructure pile interaction analysis. This is achieved by comparing the behavior of the structure and the pile foundation using the plate feature to that of the embedded pile row. In this scope, a series of 2D finite element models consisting of multistory buildings supported on pile footings are generated while varying the soil type, the earthquake frequency content, as well as the out-of-plane piles' spacing. This paper demonstrated that the building response with piles modeled as plate elements is just adequate when the surrounding soil is dense. Yet, regarding the pile response, the plate feature is unable to capture the real behavior for all soil types. Keywords—Plaxis 2D; Embedded Pile Row; Plate Element; SSI; Dynamic Response","PeriodicalId":124185,"journal":{"name":"BAU Journal - Science and Technology","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124220077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Blind Image Quality Assessment for Face Pose Problem 人脸姿态问题的盲图像质量评价

BAU Journal - Science and Technology Pub Date : 2020-06-29 DOI: 10.54729/2959-331x.1025

Cerine Tafran, Mohamad El-Abed, Ziad Osman, Islam Elkabani

引用次数: 0

Dielectric properties of Cu0.5Tl0.5Ba2Ca2Cu3O10-δ superconductor added with nano-Fe2O3 纳米fe2o3对Cu0.5Tl0.5Ba2Ca2Cu3O10-δ超导体介电性能的影响

BAU Journal - Science and Technology Pub Date : 2020-06-29 DOI: 10.54729/2959-331x.1022

A. Abou-aly, I. Ibrahim, N. H. Mohammed, M. Rekaby

{"title":"Dielectric properties of Cu0.5Tl0.5Ba2Ca2Cu3O10-δ superconductor added with nano-Fe2O3","authors":"A. Abou-aly, I. Ibrahim, N. H. Mohammed, M. Rekaby","doi":"10.54729/2959-331x.1022","DOIUrl":"https://doi.org/10.54729/2959-331x.1022","url":null,"abstract":"A series of high-temperature superconducting samples of type Cu0.5Tl0.5Ba2Ca2Cu3O10-δ, (Cu0.5Tl0.5)-1223, added with nano-Fe2O3 (0.01.0 wt. %) was prepared by a solid-state reaction technique via short time preparation procedure and under ambient pressure. The prepared samples were characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) for phase analysis and microstructure examination. The volume fraction results indicated that nano-Fe2O3 addition was significant in enhancing the formation rate of the (Cu0.5Tl0.5)-1223 phase, especially for x ≤ 0.2 wt. % samples. The electrical resistivity of the prepared samples was measured by the conventional four-probe technique from room temperature down to the zero superconducting transition temperature (T0). An increase in the superconducting temperature, Tc, is observed up to x = 0.2 wt. %, followed by a systematic decrease with increasing nano-Fe2O3 addition. The dielectric constants (ε' and ε''), dissipation factor (tan Δ) and real ac conductivity (σ'ac) were investigated as a function of temperature (113293 K) and frequency (102106 Hz). The results clarified that all these dielectric parameters show a strong dispersion with temperatures at low and moderate frequency ranges. Moreover, they are strongly dependent on nano-Fe2O3 addition. Furthermore, the high content of nanoFe2O3 addition (x = 1.0 wt. %) enhanced ε' and reduced tan D of (Cu0.5Tl0.5)-1223 phase, which is a desirable demand for practical applications.","PeriodicalId":124185,"journal":{"name":"BAU Journal - Science and Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115519328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0