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Articles 1 - 25 of 25
Full-Text Articles in Physical Sciences and Mathematics
Environmental Impacts Of Seawater Desalination On The Marine Environment In The Kingdom Of Bahrain, Waleed Al-Zubari, Alaa Elsadek, Mohamed Khadim
Environmental Impacts Of Seawater Desalination On The Marine Environment In The Kingdom Of Bahrain, Waleed Al-Zubari, Alaa Elsadek, Mohamed Khadim
Emirates Journal for Engineering Research
The main water planning and management challenge facing Bahrain is in how to balance water availability and water use on a long-term basis in the face of increasing demands under the least economic and environmental costs and without endangering socio-economic development. To meet escalating municipal water demands desalination is becoming inevitable, which is associated with substantial financial, economic, and environmental costs. In this research, the environmental impact of seawater desalination on the surrounding marine environment is assessed at a government-owned MSF desalination plant (Sitra Power and Water Station (SPWS)). The assessment used a number of environmental indicators, namely temperature and …
Flow Of Quantum Genetic Lotka-Volterra Algebras On M2(ℂ), Sondos Muhammed Syam
Flow Of Quantum Genetic Lotka-Volterra Algebras On M2(ℂ), Sondos Muhammed Syam
Theses
In this thesis, a class of flow quantum Lotka-Volterra genetic algebras (FQLVG-A) is investigated and its structure is studied. Moreover, the necessary and sufficient conditions for the associativity and alternatively of FQGLV-A are derived. In addition, idempotent elements in FQGLV-A are found. Also, derivations of a class of FQLVG-A are described. Also, the automorphisms of a class of FQLVG-A and their positivity are examined.
Biological Treatment Of Produced Water Using Algae: A Proof Of Concept, Shibin Nadersha
Biological Treatment Of Produced Water Using Algae: A Proof Of Concept, Shibin Nadersha
Theses
Produced water (PW) is the effluent generated during oil mining and extraction. On average, for every barrel of oil, 4 - 5 barrels of PW are generated worldwide. In UAE, 1.22 billion cubic meters of PW were generated in the year 2017. Proper management of PW is thus very important taking into account the large volumes of it being generated. In addition, PW is considered toxic as it contains various contaminants such as aliphatic and aromatic hydrocarbons, inorganic salts, metals, phenols, radioactive materials, and chemical additives. Disposal of untreated PW into oceans and water bodies can cause adverse effects on …
Studying Neurotoxic Effects Of Three Synthetic Insecticides And Two Herbal Infusions On The Nervous System Of The Fruit Fly Drosophila Melanogaster, Sara Khamis Obaid Hamarain Al Dhaheri
Studying Neurotoxic Effects Of Three Synthetic Insecticides And Two Herbal Infusions On The Nervous System Of The Fruit Fly Drosophila Melanogaster, Sara Khamis Obaid Hamarain Al Dhaheri
Theses
Pesticides applied on plants and animals can reach the human diet once they enter food chains. Insecticides are neurotoxic agents; they have the potential of causing damage to the nervous system in people. The damage could induce or promote neurodegenerative diseases such as the Parkinson’s and Alzheimer's. It is well-documented that the exposure to the insecticide chlorpyrifos (CPF) stimulate the Parkinson disease in humans and experimental animals. Thus, this research project will study effect of three synthetic insecticides pirimicarb, tefluthrin, and CPF on the nervous system of Drosophila melanogaster as a model organism. In addition, the project will evaluate the …
Preparation And Evaluation Of Crocetin-Coated Biodegradable Polymer On Top Of Magnetite Nanoparticles For Their Anticancer Effects, Sulafa Saeed Abdelhalim Ibrahim
Preparation And Evaluation Of Crocetin-Coated Biodegradable Polymer On Top Of Magnetite Nanoparticles For Their Anticancer Effects, Sulafa Saeed Abdelhalim Ibrahim
Theses
Liver cancer is still one of the leading causes of cancer-related deaths worldwide. This is due to many reasons including lack of effective drugs, late diagnosis of this type of cancer due to the overlapping of symptoms with many other liver diseases, and lack of effective screening tests. Targeted drug delivery systems offer many promising advantages compared to conventional chemotherapy. Targeted delivery will mitigate the bad side effects of chemotherapy such as drug resistance, low therapeutic value since the drug mostly will be administered through an IV affecting healthy and cancer cells alike, and that leads us to an important …
Plankton Dynamic At Eastern Arabian Gulf And Sea Of Oman, Muzna Mohammed Saeed Al Junaibi
Plankton Dynamic At Eastern Arabian Gulf And Sea Of Oman, Muzna Mohammed Saeed Al Junaibi
Theses
The present study is part of the collaborative research project entitled “Comparative Analysis and Predictions of Algal Blooms in the Arabian Gulf and the Sea of Oman”, between the United Arab Emirates University and Sultan Qaboos University (Grant # G00002684- 31S321), in which simultaneous and intensive biweekly plankton and water samples were collected from two opposite coastal stations off the Strait of Hormuz with the aim to study plankton dynamics at the Arabian Gulf and the Sea of Oman and the effect of environmental parameters on their community structures during the period from May 2018 until May …
Soliton Based All-Optical Data Processing In Waveguides, Amaria Javed
Soliton Based All-Optical Data Processing In Waveguides, Amaria Javed
Dissertations
The growing demand for higher data processing speed and capacity motivates the replacement of the current electronic data processing by optical data processing in analogy with the successful replacement of electronic data communication by optical data communication. In a quest to achieve comprehensive optical data processing we aim at using solitons in waveguide arrays to perform all-optical data processing operations. Solitons are special nonlinear waves appreciated for their ability to conserve their shape and velocity before and after scattering. They are observed naturally in diverse fields of science, namely, nonlinear physics, mathematics, hydrodynamics, biophysics, and quantum field theory, etc. with …
Assessment Of Heavy Metals In Sharks From The Arabian Gulf Waters, The United Arab Emirates, Noor Alali
Assessment Of Heavy Metals In Sharks From The Arabian Gulf Waters, The United Arab Emirates, Noor Alali
Theses
Metals occur naturally in the environment however anthropogenic activities have contributed to their increase in the marine ecosystem. As elements have the ability to bioaccumulate, biomagnify and transfer between biological compartments throughout the food web, they pose a great threat to living biota. The characteristics of the Arabian Gulf make it a harsh environment for marine species especially when multiple stressors are acting together. Rhizoprionodon acutus (milk shark) and Carcharhinus sorrah (spot-tail shark) are essential compartments of the Arabian Gulf ecosystem. As they are found up in the food chain and considered a predator species they are under the threat …
The Red Palm Weevil In The Uae: Morphological Diversity And Rnai-Mediated Gene Silencing Of Two Cuticle-Related Genes, Safa Hashem Mohammed Musaed
The Red Palm Weevil In The Uae: Morphological Diversity And Rnai-Mediated Gene Silencing Of Two Cuticle-Related Genes, Safa Hashem Mohammed Musaed
Theses
Red Palm Weevil (RPW), Rhynchophorus ferrugineus (Coleoptera: Curculionidae), threatens palm trees worldwide. A better understanding of this insect can help with designing an adequate management strategy. This study aimed to a better understand the morphological diversity of RPW and examined RNAi-mediated gene silencing of two cuticle-related genes, vestigial (vg) gene, and Laccase (Lac2) gene by injecting the last larval stage with double-stranded RNA (dsRNA). For the morphological diversity study, adults of RPW were collected and classified by their prothoracic spots. Additional morphological characters were measured such as Pronotum Length (PL), Pronotum Width (PW), Elytra Length (EL), Elytra Width (EW), and …
Environmental Assessment Of The Impact Of Land-Based Discharges On Marine Water And Sediment Quality In Dubai, Uae, Ayman Fathy Halawa
Environmental Assessment Of The Impact Of Land-Based Discharges On Marine Water And Sediment Quality In Dubai, Uae, Ayman Fathy Halawa
Theses
The current seawater and Creek – Canal waterway in the Emirate of Dubai, UAE, is under tremendous pressure because of continuous urban water discharges from land-based sources. Therefore, the impact of urban water discharges on marine water and sediment quality in the Emirate requires a thorough assessment. The main objective of this study is to assess the impacts of effluent discharges on the quality of water and sediment in the open sea and Dubai Creek. The land-based sources include the power and desalination plants, industrial sector, sewage treatment plant, and stormwater runoff. To achieve the stated objective, relevant data on …
Representation Of Nonlinear Pseudo-Random Generators Using State-Space Equations, Raghad K. Salih
Representation Of Nonlinear Pseudo-Random Generators Using State-Space Equations, Raghad K. Salih
Emirates Journal for Engineering Research
The idea of research is a representation of the nonlinear pseudo-random generators using state-space equations that is not based on the usual description as shift register synthesis but in terms of matrices. Different types of nonlinear pseudo-random generators with their algorithms have been applied in order to investigate the output pseudo-random sequences. Moreover, two examples are given for conciliated the results of this representation.
Development Of A Decision Support System For Sustainable Water Planning In Abu Dhabi, Uae, Mohamed Ibrahim Kizhisseri
Development Of A Decision Support System For Sustainable Water Planning In Abu Dhabi, Uae, Mohamed Ibrahim Kizhisseri
Dissertations
One of the main challenges for water managers is to foresee the future accurately; then, design appropriate policies and infrastructure plans accordingly. The use of decision support systems in the field of water resource management and planning is now widely implemented, but its use in sustainable water planning of a nation or state in arid and semi-arid areas, such as Middle East countries, remains limited. The main objective of this dissertation is to present a graphical software tool that can assist water planners and decision-makers in long-term water management and planning. Sustainable planning for Abu Dhabi’s future water supply is …
A Reinforcement Learning Approach To Vehicle Path Optimization In Urban Environments, Shamsa Abdulla Al Hassani
A Reinforcement Learning Approach To Vehicle Path Optimization In Urban Environments, Shamsa Abdulla Al Hassani
Theses
Road traffic management in metropolitan cities and urban areas, in general, is an important component of Intelligent Transportation Systems (ITS). With the increasing number of world population and vehicles, a dramatic increase in road traffic is expected to put pressure on the transportation infrastructure. Therefore, there is a pressing need to devise new ways to optimize the traffic flow in order to accommodate the growing needs of transportation systems. This work proposes to use an Artificial Intelligent (AI) method based on reinforcement learning techniques for computing near-optimal vehicle itineraries applied to Vehicular Ad-hoc Networks (VANETs). These itineraries are optimized based …
Morgan- Voyce Approach For Solution Bratu Problems, Bushra Eesa Kashiem
Morgan- Voyce Approach For Solution Bratu Problems, Bushra Eesa Kashiem
Emirates Journal for Engineering Research
Bratu equations are substantial in electrostatic and plasma problem. The aim of this paper is design a morgan-voyce approach for solving bratu problem. We present a morgan-voyce polynomial along with significant properties; the effectiveness of the proposed algorithm is demonstrated by considering three numerical examples.
Heart Rhythm Classification From Static And Ecg Time-Series Data Using Hybrid Multimodal Deep Learning, Ahmad Abdulrazaq Abdulla Alnajjar
Heart Rhythm Classification From Static And Ecg Time-Series Data Using Hybrid Multimodal Deep Learning, Ahmad Abdulrazaq Abdulla Alnajjar
Theses
Cardiovascular arrhythmia diseases are considered as the most common diseases that cause death around the world. Abnormal arrhythmia diseases can be identified by analyzing heart rhythm using an electrocardiogram (ECG). However, this analysis is done manually by cardiologists, which may be subjective and susceptible to different cardiologist observations and experiences, as well as to noise and irregularities in those signals. This can lead to misdiagnosis. Motivated by this challenge, an automated heart rhythm diagnosis approach from ECG signals using Deep Learning has been proposed. In order to achieve this goal, three research problems have been addressed. First, recognize the role …
Sustainability Of Modern Groundwater Pumping Technologies, Life Cycle Assessment, Hesham Mahmood Alshehabi
Sustainability Of Modern Groundwater Pumping Technologies, Life Cycle Assessment, Hesham Mahmood Alshehabi
Theses
The sustainability of groundwater equipment systems is not well addressed in the Gulf Cooperation Council Countries (GCC). The typical technology practiced in the GCC is the borehole pumps coupled with asynchronous motors. This thesis is evaluating the sustainability of various alternatives for groundwater equipment through the three pillars of sustainability. Economic assessment seeking the Levelized cost of water given typically in $/m³ and main factors affecting the energy intensity through a statistical comparative analysis approach. Environmental evaluation through performing a life cycle assessment model for four pumping alternatives, and finally, societal impact assessment aiming to identify the best practices and …
The Q-Gauss Product, Q-Trigonometry Via Landen-Like Identities, And Positive Alternating Q-Series, Sarah Abo Touk
The Q-Gauss Product, Q-Trigonometry Via Landen-Like Identities, And Positive Alternating Q-Series, Sarah Abo Touk
Theses
The object of this report is q-series and their relationship with certain special functions. Firstly, Jackson’s q-analogue of the Euler gamma function is introduced and a q-analogue for a famous formula of Gauss on products of the gamma function will be presented. Secondly, Jacobi’s theta functions will be discussed in details and new Landenlike half argument formulas will be established. As an application, q-trigonometric formulas shall be derived and a new proof for a well-known q-series relation of Jacobi will be given. Thirdly, an extended Bailey transform will be presented and a variety of new q-series will be deduced as …
Sum Of Squares With Q-Series, Gosper’S Q- Trigonometry, An New Identities Via An Extended Bailey Transform, Zina Al Houchan
Sum Of Squares With Q-Series, Gosper’S Q- Trigonometry, An New Identities Via An Extended Bailey Transform, Zina Al Houchan
Theses
This report is concerned about q-series and some of their applications. Firstly, Jacobi’s q-series proof for Legendre’s theorem on sums of four squares will be presented. By way of comparison, the classical approach of this result will be also discussed. Secondly, Gosper’s q-trigonometry will be introduced using Jacobi’s theta functions and the theory of elliptic functions shall be employed to confirm one of Gosper’s conjectures. As an application, a proof for Fermat’s theorem on the sums of squares will be provided. Thirdly, an extended version of Bailey’s transform will be established and as a consequence, a variety of new q-series …
Partial Oxidation Of Methane To Synthesis Gas Over Ni/Γ-Al₂O₃ Catalysts: The Effect Of The Structure And The Pre-Treatment Of The Support On The Catalysts’ Performance, Sheikh Tijan Jobe
Partial Oxidation Of Methane To Synthesis Gas Over Ni/Γ-Al₂O₃ Catalysts: The Effect Of The Structure And The Pre-Treatment Of The Support On The Catalysts’ Performance, Sheikh Tijan Jobe
Theses
Abundant natural gas is a potential source of more cost-effective energy and its effective utilization can significantly reduce the dependence on petroleum oil. Disadvantages of natural gas as a direct fuel include its low energy density by volume, and high cost of transportation, which resulted in its underutilization as an alternative energy source. Therefore, the conversion of methane to more easily-handled and value-added products is becoming a promising route for natural gas utilization. Compared to steam reforming of methane to syngas, which is the most commercially applied conversion process, partial oxidation is a more cost-effective promising route. While noble metals …
Controllability And Observability Of Blood Glucose Levels And The Impact Of Covid-19 On Diabetic Patients, Mahra Salem Nasser Abdulla Alblooshi
Controllability And Observability Of Blood Glucose Levels And The Impact Of Covid-19 On Diabetic Patients, Mahra Salem Nasser Abdulla Alblooshi
Theses
Diabetes is a metabolic disorder that is characterized by high blood glucose concentrations resulting from insulin deficiency in case of type 1 or insulin inefficiency in case of type 2. While no cure for diabetes exists, the artificial pancreas is a possible way to manage diabetes, especially for type 1 diabetics. Where an artificial pancreas is a closed-loop control system with an integrated mathematical model. This control system imitates the function of a healthy pancreas. The first part of this thesis is concerned with the control system of an artificial pancreas that is based on Bergman’s minimal model of glucose-insulin …
Fabrication Of Chemically-Functionalized 3dprinted Porous Scaffolds For Biomedical Applications, Eiman Hamed Matar Atalla Alblooshi
Fabrication Of Chemically-Functionalized 3dprinted Porous Scaffolds For Biomedical Applications, Eiman Hamed Matar Atalla Alblooshi
Theses
Hard tissues, such as bone and teeth, are natural composites of collagen nanofibers that are reinforced by inorganic calcium phosphate Nano crystallites, in the form of nanocomposites. The interlocking between these components in hard tissues explains their unique characteristics. Bone is mainly classified into two major types; compact and cancellous depending on the extent of porosity. Fractures in the compact bone can be treated using bone fixation implants, such as rods, screws, and plates, or can be totally replaced by bone implants if complete substitution is required. Cancellous bone, on the other hand, is highly porous and its substitution with …
Levels Of Testosterone Esters In Camel Hair, Aysha Khalidi Ali Alraeesi
Levels Of Testosterone Esters In Camel Hair, Aysha Khalidi Ali Alraeesi
Theses
Doping and steroid use represent a serious threat to animal health and can even lead to their untimely and painful death. However, doping is an acute problem in today's animal racing world, particularly in camel racing. Testosterone and its ten esters (benzoate, valerate, isocaproate, hexahydrobenzoate, decanoate, undecanoate, laurate, enanthate, cypionate, and caproate) are of utmost importance because when they are administered to animals it is difficult to measure them efficiently. The levels of testosterone and its esters in camels and other animals are typically determined using urine and blood tests. The aim of this study was to develop and validate …
Building And Using Digital Libraries For Etds, Edward A. Fox
Building And Using Digital Libraries For Etds, Edward A. Fox
The Journal of Electronic Theses and Dissertations
Despite the high value of electronic theses and dissertations (ETDs), the global collection has seen limited use. To extend such use, a new approach to building digital libraries (DLs) is needed. Fortunately, recent decades have seen that a vast amount of “gray literature” has become available through a diverse set of institutional repositories as well as regional and national libraries and archives. Most of the works in those collections include ETDs and are often freely available in keeping with the open-access movement, but such access is limited by the services of supporting information systems. As explained through a set of …
Ovals And Niho Bent Functions In Small Dimensions, Rasha M. E. Shat
Ovals And Niho Bent Functions In Small Dimensions, Rasha M. E. Shat
Theses
In this thesis hyperovals and ovals are considered in the projective plane PG(2,q), q = 2m even. Traditionally these objects are studied algebraically via o-polynomials. In our work, a different approach is used by means of g-functions. These functions also provide a natural description of Niho bent functions. Using g-functions, all ovals and Niho bent functions are listed up to equivalency for dimensions m ≤ 6.
A Numerical Method For Solving Fuzzy Initial Value Problems, Safa Emad Al-Refai
A Numerical Method For Solving Fuzzy Initial Value Problems, Safa Emad Al-Refai
Theses
In this thesis, the optimized one-step methods based on the hybrid block method (HBM) are derived for solving first and second-order fuzzy initial value problems. The off-step points are chosen to minimize the local truncation error of the proposed methods. Several theoretical properties of the proposed methods, such as stability, convergence, and consistency are investigated. Moreover, the regions of absolute stability of the proposed methods are plotted. Numerical results indicate that the proposed methods have order three and they are stable and convergent. In addition, several numerical examples are presented to show the efficiency and accuracy of the proposed methods. …