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Articles 1 - 30 of 30
Full-Text Articles in Architecture
Antibacterial Effect And Phytochemical Analysis Of The Shoot System Of Rubus Canescens Dc. Growing In Lebanon, Omar Assafiri, Hiba Abdallah, Mohammed El-Dakdouki
Antibacterial Effect And Phytochemical Analysis Of The Shoot System Of Rubus Canescens Dc. Growing In Lebanon, Omar Assafiri, Hiba Abdallah, Mohammed El-Dakdouki
BAU Journal - Science and Technology
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 …
Waterpipe: A Global Alarming Problem, Tarek Houri, Bilal Osta, Sara Mobayed, Rayan Farha, Mazher Issa
Waterpipe: A Global Alarming Problem, Tarek Houri, Bilal Osta, Sara Mobayed, Rayan Farha, Mazher Issa
BAU Journal - Science and Technology
Waterpipe popularity has increased significantly in the recent decades to become the major cause of death worldwide. This practice, which is also known as hookah, shisha and Narghile that is based on tobacco burning, increases the percentage of tobacco smokers especially among young people, due to several factors such as the attracting effect of sweetened tobacco, the marketing role and the social acceptance of waterpipe. A literature review was constructed using "Pub med" as a searching tool to confirm by studies the differences in adverse effects between waterpipe and cigarette by analyzing the toxicant’s levels generated from them, evaluating the …
Moringa Oleifera Leaves Aqueous Extract Induce Apoptosis In Ht29 Cell Line, Farah Reda, Jamila Borjac, Julnar Usta
Moringa Oleifera Leaves Aqueous Extract Induce Apoptosis In Ht29 Cell Line, Farah Reda, Jamila Borjac, Julnar Usta
BAU Journal - Science and Technology
Moringa oleifera (MO) tree has been recognized for the nutritional and medicinal values, attributing anti-inflammatory, antioxidants, and antidiabetic activities of the alcoholic and/or water extracts to its various parts. Recent research has focused on therapeutic anti-cancerous effects of the water extract of MO leaves (MOE), commonly consumed as hot beverage. In-vitro cytotoxicity on esophageal, lung, and breast cancer cells were reported by MOE. The aim in this study is to investigate the anti-cancerous potential of MOE on the colon carcinoma HT29 cells. MO water extract (MOE) was prepared at concentrations (0.1%-0.5%). MOE anti-proliferative effect on HT29-cells was assessed by measuring …
Photoluminescence Spectroscopic Studies Of Mn2o3/Co3o4-Glucose/Lactose Complexes, Alaa Abdallah, Jamalat Al Boukhari, Rana Najjar
Photoluminescence Spectroscopic Studies Of Mn2o3/Co3o4-Glucose/Lactose Complexes, Alaa Abdallah, Jamalat Al Boukhari, Rana Najjar
BAU Journal - Science and Technology
As nanoparticles serve as mediators in the electron transfer between biomolecules and a biosensor’s electrode surface, this study is dedicated to investigating Mn2O3 and Co3O4 nanoparticles and their photoluminescence effect that play a critical role in sensing glucose and lactose. The chemical coprecipitation method was adopted for preparing the nanoparticles that were characterized by X-Ray Diffraction, Transmission Electron Microscope, Fourier Transform Infrared spectroscopy, Energy Dispersive X-ray, UV-vis spectroscopy, and Vibrating Sample Magnetometry. It was found that the obtained Mn2O3 and Co3O4 nanoparticles were successfully prepared, with a crystallite size of 65.91 and 58.00 nm, respectively. The high specific surface area …
Activation Of Fly Ash To Stabilise Lead Contaminated Soils And Solutions, Mabrouk Hassan Arhoma
Activation Of Fly Ash To Stabilise Lead Contaminated Soils And Solutions, Mabrouk Hassan Arhoma
BAU Journal - Science and Technology
The role of pH on removal of metal contaminated solution was investigated by adding gradually drops of NaOH to lead solutions, the increase of the pH was observed and concentration of lead solution was measured by using ICP. The activated \ pulverised fly ash (PFA) was used as stabilizing material. The leaching behaviour of lead was investigated using 5 grams of the soil thoroughly mixed with 0.1g of the stabilising material in a polypropylene container to which 50ml of either deionised water; the mixture was shaken on a flat bed shaker for 2h, and then filtered using a What man …
Corrosion Of Coated And Uncoated Steel Reinforcement In Concrete, Jana Abou Shakra, Rouba Joumblat, Jamal Khatib, Adel Elkordi
Corrosion Of Coated And Uncoated Steel Reinforcement In Concrete, Jana Abou Shakra, Rouba Joumblat, Jamal Khatib, Adel Elkordi
BAU Journal - Science and Technology
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 …
Effect Of Using Cathode-Ray Tubes (Crt) Waste Glass On Concrete Properties, Jad Bawab, Jamal Khatib, Ali Jahami, Said Kenai, Adel Elkordi
Effect Of Using Cathode-Ray Tubes (Crt) Waste Glass On Concrete Properties, Jad Bawab, Jamal Khatib, Ali Jahami, Said Kenai, Adel Elkordi
BAU Journal - Science and Technology
Cathode-ray tube (CRT) glass is a hazardous material that should be responsibly managed when disposed. One of the possible options for recycling CRT waste glass is using it as fine aggregates in concrete for its richness in silica. For the aim of evaluating concrete with this material, four mixes with replacement levels of 0%, 10%, 20% and 30% are prepared. Workability, hardened density, ultra-pulse velocity, compressive strength, tensile strength, and static modulus of elasticity were examined. Experimental results showed that the use of CRT improved properties of concrete at certain replacement levels. CRT glass improved the workability of concrete where …
Concrete Mix Design Using Simple Equations, Hakim Abdelgader, Ramadan Suleiman, Abdalla Adam, Jamal Khatib
Concrete Mix Design Using Simple Equations, Hakim Abdelgader, Ramadan Suleiman, Abdalla Adam, Jamal Khatib
BAU Journal - Science and Technology
The behaviour of concrete, whether fresh or hardened, depends basically on the behaviour of its components and the relationship between them, therefore, obtaining a concrete with certain properties depends fundamentally on the concrete mix design. Concrete mix design generally includes two main steps: 1-Selection of the main components suitable for the concrete (cement, aggregate, water, and additives); 2-Determination of more economical mix ratios to fulfil the workability, strength and efficiency requirements. Currently, there are many international methods locally approved for mix designs. They are all related to each other, they give relatively the same quantities of the mix components and …
Essential Control To Environmental Regulations For Oil And Gas Industry: Spotlight On Drilling Processes In Lebanon, Rami Harkouss
Essential Control To Environmental Regulations For Oil And Gas Industry: Spotlight On Drilling Processes In Lebanon, Rami Harkouss
BAU Journal - Science and Technology
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 …
Blind Image Quality Assessment For Face Pose Problem, Cerine Tafran, Mohamad El-Abed, Ziad Osman, Islam Elkabani
Blind Image Quality Assessment For Face Pose Problem, Cerine Tafran, Mohamad El-Abed, Ziad Osman, Islam Elkabani
BAU Journal - Science and Technology
No-Reference image quality assessment for face images is of high interest since it can be required for biometric systems such as biometric passport applications to increase system performance. This can be achieved by controlling the quality of biometric sample images during enrollment. This paper proposes a novel no-reference image quality assessment method that extracts several image features and uses data mining techniques for detecting the pose variation problem in facial images. Using subsets from three public 2D face databases PUT, ENSIB, and AR, the experimental results recorded a promising accuracy of 97.06% when using the RandomForest Classifier, which outperforms other …
Studies Of Smba2cu3o7-Δ / Znfe2o4 Superconducting Composites, Hadi Basma, Waleed Abdeen, Ayman El-Tahan, El-Maghraby El-Maghraby, Ahmed Khalaf
Studies Of Smba2cu3o7-Δ / Znfe2o4 Superconducting Composites, Hadi Basma, Waleed Abdeen, Ayman El-Tahan, El-Maghraby El-Maghraby, Ahmed Khalaf
BAU Journal - Science and Technology
SmBa2Cu3O7-δ /(ZnFe2O4)x superconducting composites with 0.00 ≤ x ≤ 0.20 wt% were prepared by the usual solid-state reaction method. The prepared samples were investigated using X-ray powder diffraction (XRD) at room temperature and electron paramagnetic resonance (EPR) measurements in the temperature range (100-295 K). It is found that EPR spectra are dominated by an anisotropic Cu2+ EPR pattern. Moreover, the EPR spectral intensity increases as the temperature decrease from room temperature down to 100 K. The number of spins (N) participating in EPR resonance, the activation energy (Ea), the paramagnetic susceptibility (c) and the effective magnetic moment (µeff) are calculated …
Potential Male Contraceptive Effect Of Eriobotrya Japonica Leaves Extract, Alaa Al Moubarak, Manal El Joumaa, Jamilah Borjac
Potential Male Contraceptive Effect Of Eriobotrya Japonica Leaves Extract, Alaa Al Moubarak, Manal El Joumaa, Jamilah Borjac
BAU Journal - Science and Technology
Nowadays, the stability of population growth is becoming one of the common global social and health problems that could be solved via contraception. Current research in the field of male contraceptives is focusing on the use of oral herbs. Eriobotrya japonica (Loquat) is a medicinal plant that has been commonly valued for its anti-inflammatory, antioxidant, antidiabetic, hypocholesteremic, and antitumor properties. The present study aimed to investigate the effects of the oral administration of loquat aqueous leaves extract on the fertility of male Balb/c mice. For this aim, six-eight-weeks old male Balb/c mice (~25g) were orally administered (100 mg/Kg/day) loquat leaves …
Dielectric Properties Of Cu0.5tl0.5ba2ca2cu3o10-Δ Superconductor Added With Nano-Fe2o3, Aly Abou-Aly, Ibrahim Ibrahim, Nayera Mohammed, Mona Rekaby
Dielectric Properties Of Cu0.5tl0.5ba2ca2cu3o10-Δ Superconductor Added With Nano-Fe2o3, Aly Abou-Aly, Ibrahim Ibrahim, Nayera Mohammed, Mona Rekaby
BAU Journal - Science and Technology
A series of high-temperature superconducting samples of type Cu0.5Tl0.5Ba2Ca2Cu3O10-δ, (Cu0.5Tl0.5)-1223, added with nano-Fe2O3 (0.0- 1.0 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 …
Customer Churn Analysis Using Binary Logistic Regression Model, Mohammad Abiad, Sorin Ionescu
Customer Churn Analysis Using Binary Logistic Regression Model, Mohammad Abiad, Sorin Ionescu
BAU Journal - Science and Technology
These days, the fundamental target of all organizations is to accomplish a reasonable gainfulness. Organizations are looking to decide the elements, which has direct impact on their benefit and attempt to investigate them so as to pick up favorable circumstances on their rivals. With this solid aggressive market, holding customers turns into the fundamental objective of telecom mobile service providers opposed to drawing in new customers, since the expense of holding a customer is viewed as low contrasted with the expense of pulling in another customer as referenced before by numerous researchers. Thus, Customer Churn Analytics is one of the …
Solvent Effects On The Electronic Absorption Spectra Of Some Analytical Indicators, Mamdouh S. Masoud, Rabah H.A. Mohamed, Hesham M. Kamel, Najat O. M. El-Ziani
Solvent Effects On The Electronic Absorption Spectra Of Some Analytical Indicators, Mamdouh S. Masoud, Rabah H.A. Mohamed, Hesham M. Kamel, Najat O. M. El-Ziani
BAU Journal - Science and Technology
Electronic absorption spectra of selected ligands (Alloxan, Carmine, Naphthol Yellow S, Hematoxylin and Cyanine) were recorded in presence of different solvents (H2O, Ethyl acetate, Ethanol, DMF, Isopropyl alcohol, Amyl alcohol and Butanol) of variable physical properties. The electronic transitions were assigned. The data are analyzed based on the multiple linear regression technique explained from the views of different solvent parameters. Statistical analyses of the effect of solvents on the electronic spectra of the present ligands have been investigated.
Performance Of Concrete Containing Waste Plastic Straw Fibers, Jamal Khatib, Ali Jahami, Oussama Baalbaki, Adel Elkordi, Abed Bakri, Roba Alaina
Performance Of Concrete Containing Waste Plastic Straw Fibers, Jamal Khatib, Ali Jahami, Oussama Baalbaki, Adel Elkordi, Abed Bakri, Roba Alaina
BAU Journal - Science and Technology
Using fibers in concrete applications has become a common practice. This is partly due to improvement in ductility and crack control of concrete. There will be an added advantage if these fibers come from a waste source as it would lead to reduction in environmental pollution and the need for landfill spaces. This paper forms the initial part of a wide range investigation on the use of waste plastic fibers in concrete applications. This study attempts to apply the concept of sustainability and reduces the environmental pollution by producing fibers from waste plastic straws and adding them to plain concrete …
Effect Of Partial Replacement Of Sand By Mswi-Ba On The Properties Of Mortar, Hassan Ghanem, Jamal Khatib, Adel Elkordi
Effect Of Partial Replacement Of Sand By Mswi-Ba On The Properties Of Mortar, Hassan Ghanem, Jamal Khatib, Adel Elkordi
BAU Journal - Science and Technology
Disposal of municipal solid wastes (MSW) has recently become a major problem in Lebanon as finding appropriate landfill is becoming more challenging than ever. Incineration is a technique currently used to reduce the volume of MSW generated. The output of this treatment is a residue well known as Municipal Solid Waste Incineration bottom and fly ash. This study is focused on the mortar containing Municipal Solid Waste Incineration Bottom Ash (MSWI-BA) as partial replacement of sand. For this purpose, mortar specimens were prepared with 25, 50 and 100% (by weight) MSWI-BA to replace the sand. Specimens were cured in water …
Behavior Of Reinforced Concrete Beams Containing Lightweight Aggregate In The Tensile Zone, Jamal Khatib, Ali Jahami, Oussama Baalbaki, Adel Elkordi, Hakim Abdelgader
Behavior Of Reinforced Concrete Beams Containing Lightweight Aggregate In The Tensile Zone, Jamal Khatib, Ali Jahami, Oussama Baalbaki, Adel Elkordi, Hakim Abdelgader
BAU Journal - Science and Technology
In reinforced concrete design, the concrete in the tensile zone is assumed to be ineffective and increase the dead load of the structural elements. In order to reduce the self-weight, this paper examines the structural behavior of reinforced concrete beams containing lightweight concrete in the tensile region and normal weight concrete in the rest of the beam. The lightweight concrete was made from waste polystyrene. Four reinforced concrete beams were prepared with different depth of lightweight concrete. The control beam B1 consists of normal concrete. In Beams B2, B3 and B4, the depth of lightweight concrete was 25%, 50% and …
Fuzzy Logic Velocity Optimization Of Autonomous Vehicles Based On Road Bump Geometry, Yassine Zein, Mohamad Darwiche
Fuzzy Logic Velocity Optimization Of Autonomous Vehicles Based On Road Bump Geometry, Yassine Zein, Mohamad Darwiche
BAU Journal - Science and Technology
In today’s world of fast developing technologies, semi-autonomous vehicles are becoming a common sight and increasing in numbers. Some feature autopilot systems that drive the vehicle without any intervention from the driver in certain situations or warn the driver of dangers ahead. A fully autonomous vehicle is yet to come due to old fashioned road infrastructures that would convey challenging scenarios for it. From speed bumps and traffic lights to road lanes and warning signs, current autopilot systems will have to cope with all. A system that ensures safe crossing of speed bumps when in autopilot mode is discussed in …
Emergency Vehicles Allocation Model For Urban City, Ramzi Fayad, Hadi Abou Chakra
Emergency Vehicles Allocation Model For Urban City, Ramzi Fayad, Hadi Abou Chakra
BAU Journal - Science and Technology
The Emergency Medical Service (EMS) plays a vital role in any community. The accessibility, distribution, and utilization of the emergency health care services have a great impact on the effectiveness and the efficiency of the EMS. In this study, an algorithm has been devised to optimize choosing the appropriate station location, allocating the right number of emergency vehicles to a station, and directing the critical and non-critical patients to the most suitable hospitals. XPRESS-MP solver engine was used in this study to derive a deterministic mathematical model using mixed integer linear programming. This model is customized for Beirut city. The …
Mechanical Properties Of Transition Metals Mn,Fe And Zn Doped Nio Nanoparticles, Ahmed Khalaf, Jamalat Al Boukhari, Lidea Zeidan
Mechanical Properties Of Transition Metals Mn,Fe And Zn Doped Nio Nanoparticles, Ahmed Khalaf, Jamalat Al Boukhari, Lidea Zeidan
BAU Journal - Science and Technology
This work is a continuation of the characterization study of nickel oxide (NiO) nanoparticles (NPs) doped with transition metals (TM) like Mn, Fe and Zn, synthesized by the co-precipitation method. In this part, the effect of TM doping on the physical and mechanical properties of the NiO NPs is examined using a digital Vickers microhardness tester. The microhardness measurement results enable us to evaluate the important mechanical parameters including Vickers microhardness (HV), Young's modulus (E), yield strength (Y) and fracture toughness (KIC), responsible for practical industrial applications. It was found that all the properties given above strongly depend on the …
Empirical Study Of Knowledge Sharing Among Multinational Academicians, Shaidah Jusoh, Hejab Alfawareh
Empirical Study Of Knowledge Sharing Among Multinational Academicians, Shaidah Jusoh, Hejab Alfawareh
BAU Journal - Science and Technology
Knowledge sharing among faculty members may enhance the quality of teaching and research activities. Despite the fact that a number of research has been conducted, to the best of our knowledge, this is the first work that focus on multinational academicians. The aim of this empirical study is to investigate ways and factors which contribute to knowledge sharing in the context of multinational academicians at universities. We performed this study at the Information Technology faculty at one of universities in Saudi Arabia, as a case study. The faculty employed academicians from 10 different countries including Malaysia, Jordanian, Egypt, Saudi Arabia, …
Rotary Oscillation Of A Rigid Sphere In A Couple Stress Fluid, Tarek Shehadeh, Emad Ashmawy
Rotary Oscillation Of A Rigid Sphere In A Couple Stress Fluid, Tarek Shehadeh, Emad Ashmawy
BAU Journal - Science and Technology
In this paper, the rotary oscillation of a rigid sphere in an incompressible couple stress fluid is studied. The classical no slip boundary conditions are imposed on spherical boundary. Moreover, it is assumed that the couple stresses on the boundary of the sphere vanish. In the present study, the motion is generated by a sudden rotary oscillation of the rigid sphere about an axe passing through its center with a time-dependent angular velocity. Stokasian assumption is taken into consideration so that the non-linear terms are neglected in the equation of motion. The torque experienced by the couple stress fluid on …
On The Product Of Two Hypoexponential Random Variables, Therrar Kadri, Khaled Smaili, Seifedine Kadry, Ali El-Joubbeh
On The Product Of Two Hypoexponential Random Variables, Therrar Kadri, Khaled Smaili, Seifedine Kadry, Ali El-Joubbeh
BAU Journal - Science and Technology
In this paper, we consider the product of two independent Hypoexponential distributions which has many applications in sciences and engineering. We find analytically the probability density function, the cumulative distribution function, moment generating function, the reliability function and hazard function, which was proved to be a linear combination of the K distribution. Finally, we will apply our results application in stochastic PERT Network.
Influence Of Nano-Ag Addition On Phase Formation And Excess Conductivity Analysis Of (Cu0.5tl0.5)-1223 Superconducting Phase, Nayera Mohammed, Seham Mahmoud, Weleed Abdeen, Marwa Hasebbo
Influence Of Nano-Ag Addition On Phase Formation And Excess Conductivity Analysis Of (Cu0.5tl0.5)-1223 Superconducting Phase, Nayera Mohammed, Seham Mahmoud, Weleed Abdeen, Marwa Hasebbo
BAU Journal - Science and Technology
Ceramic superconducting samples of type (nano-Ag)xCu0.5Tl0.5Ba2Ca2Cu3O10-δ, 0.0 ≤ x ≤ 3.0 wt.%, were successfully synthesized via single step solid-state reaction technique at 850 ºC and under ambient pressure. The samples were characterized by XRD and SEM. Obtained data revealed that the highest grains connectivity volume fraction was detected for the sample with x = 0.15 wt.%. The electrical properties of the prepared samples was examined using the electrical resistivity measurements, and the results proved that the highest superconducting transition temperature Tc was observed at x = 0.15 wt.%. Furthermore, the fluctuation conductivity Δσ(T), above Tc, was analyzed as a function …
Speed Bump Detection For Autonomous Vehicles Using Signal-Processing Techniques, Mohamad Darwiche, Wassim El-Hajj-Chehade
Speed Bump Detection For Autonomous Vehicles Using Signal-Processing Techniques, Mohamad Darwiche, Wassim El-Hajj-Chehade
BAU Journal - Science and Technology
Autonomous vehicle (AV) is one of the emerging technologies that have far-reaching applications and implications in smart cities. Among the current challenges of the Smart City, Traffic management is of utmost importance. AV technologies can decrease transportation cost and can be used for efficient management and control of traffic flows. Traffic management strongly depends on the road surface condition. Abnormalities in the road, such as manholes and potholes, can cause accidents when not identified by the drivers. Furthermore, human-induced abnormalities, such as speed bumps, could also cause accidents. Detecting road abnormalities provide safety to human and vehicles. Current researches on …
A Review On The Use Of Vegetable Oil And Its Waste In Construction Applications, Ahmed Chamaa, Jamal Khatib, Adel Elkordi
A Review On The Use Of Vegetable Oil And Its Waste In Construction Applications, Ahmed Chamaa, Jamal Khatib, Adel Elkordi
BAU Journal - Science and Technology
The generation of waste materials is causing an impact on the environment due to many reasons including the effect on human health and decrease in landfill space. Of these waste materials is the waste cooking oil. There are large amounts of waste vegetable oil generated in the world and most of it is disposed of in the sewer system which can cause problems when treating wastewater. This paper is a review of literature on the use of vegetable oil (VO) and waste vegetable oil (WVO) as chemical admixtures in construction materials. The construction materials include mainly concrete and pavement. The …
Flexural Testing Of Various Composite-Beamsunder Quasi-Static Loads, Wael Slika, Adnan Masri, Oussama Baalbaki
Flexural Testing Of Various Composite-Beamsunder Quasi-Static Loads, Wael Slika, Adnan Masri, Oussama Baalbaki
BAU Journal - Science and Technology
The successful interaction between concrete and steel has inspired researchers to develop composite structural systems. Steel and concrete are utilized in various configurations to reduce construction costs and assure optimal load-response behavior. Since the response spectrum of the composite system varies from one system to another, adequate understanding of the composite system behavior is essential to guarantee a desired response. Several parameters affect the flexural capacity and failure mode of a composite section, such as geometry, material properties and bond. In practice, advanced material mechanics and numerical modeling can be utilized for simulating section response, however, variability in the material …
The Impact Of Design Changes In Construction Projects On The Cost Charged By Consultant Offices, Hadi Abou Chakra
The Impact Of Design Changes In Construction Projects On The Cost Charged By Consultant Offices, Hadi Abou Chakra
BAU Journal - Science and Technology
In any construction project, a large number of modifications occur. The consequences of those modifications may result in additional costs due to the re-design of the project on each member of the project’s stakeholders. The financial impact of modifications during the construction phase of a project on consultant offices will be explored in this study. The aim of this study is to investigate the cost of the modifications and to examine the type of relationship between the time spent on the design to accomplish the modifications and the amount of money earned in the return of the extra work done. …
Siderite As A Weighting Material In Drilling Mud, Khaled Abou Alfa, Rami Harkouss, Jamal Khatib
Siderite As A Weighting Material In Drilling Mud, Khaled Abou Alfa, Rami Harkouss, Jamal Khatib
BAU Journal - Science and Technology
Successful petroleum drilling largely depends on the type and quality of mud used in the process. There exist many types of muds, which differ in use and composition. Certain muds are composed of materials that can cause damage to the formation and the bottom-hole. This has resulted in the search for alternatives mud additives or addition of new materials to minimize the damage of the formation and enhance the stability of the wellbore. Several bodies of literature exist that research different sources of mud functions and additives, also their effect on the drilling process, the production zone and the environment. …