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Qatar Foundation Annual Research Conference Proceedings Volume 2016 Issue 1
- Conference date: 22-23 Mar 2016
- Location: Qatar National Convention Center (QNCC), Doha, Qatar
- Volume number: 2016
- Published: 21 March 2016
181 - 200 of 656 results
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Azolla as a Feedstock for Bio-Refinery: Cultivation, Conversion and Application
Azolla is one of the world's fastest growing aquatic macrophytes, with a doubling time of only 2-5 days (Taghi-Ganji et al., 2005). It can be found on the surface of wetlands, ditches, ponds and rivers, native to the tropics, subtropics, and warm temperate regions of Africa, Asia, and the Americas (Costa et al., 2009) (Figure. 1). It has been intensively studied during the last few years for its potential uses as a green manure in rice fi Read More
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Advanced Multiphase CFD Modelling to Understand Impact of Undersea Oil Spill
Authors: Krishnaswamy Nandakumar, Abhijit Rao and Kalliat T. ValsarajThe growing energy demand across the globe has resulted in an increase in the deep water oil exploration activities which in turn has increased the risk of occurrence of associated accidental oil releases. Oil and Gas offshore businesses are important to Qatar's economy. Further, the country is heavily dependent on its marine water resources for fulfilling its potable water needs through the desalination process. So, it is imperati Read More
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Tremendous Change in Economy of Qatar Through Economics‘s Tools
More LessAs about Qatar well known country among Gulf countries, depends on a single commodity of resources or we can say rentire state which is totally depends on natural resources as petrochemicals and gas. In the classical views of economics always use the diminishing law of return in production, which shows if production factor one or two are used in production, this will increase production but in decreasing rate. Whic Read More
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Enhanced Energy Extraction from a Solar Panel
Authors: Shahbaz Tabish, Atif Iqbal, Imtiaz Ashraf and Khaliqur RahmanDue the movement of the sun throughout the day, the insolation level incident on the fixed panel surface varies largely. The maximum level of insolation occurs only around noon. This leads to the panel to be under-utilised. To maximise the utilisation of the panel during the day, mechanical solar tracking is used. This method not only increases the utilisation of the, but increases the power being extracted from the panel. Sol Read More
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Isolation and Identification of Potentially Pathogenic Vibrio Species from Qatari Coastal Seawaters
The genus Vibrio accounts for a major group of marine and estuarine bacteria capable of causing diseases in various aquatic organisms including fishes, corals, shellfish's and shrimps. Infections with these organisms have profound environmental and economic consequences. In the present study, 52 isolates of Vibrio species were isolated from the water samples collected from 14 sites surrounding Qatar during the winter se Read More
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Performance Analysis of Multiphase High Power Open End Drives Fed from Dual Matrix Converter
Authors: Khaliqur Rahman, Atif Iqbal, Nasir Al-Emadi and Rashid Al-AmmariIn this paper an open ended seven phase stator winding drive is considered for analysis that is to be fed from matrix converter controlled by space vector pulse width modulation scheme. Open-end winding variable speed drives with dual matrix converter supply have been extensively investigated for various applications in the past, based on a three-phase machine configuration. This topology is relatively simple for pra Read More
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Modeling Development of a Combined Methane Fixed Bed Reactor Reformer
The growing concern of many countries globally about the greenhouse gas emissions have emphasized interest towards dry reforming of methane (DRM). For an oil and gas based economy such as the state of Qatar, CO2 emission is a big challenge, as it has rendered Qatar as the highest CO2 emitting country per capita in the world. The potential of DRM process for integration in the existing infrastructure of Qatar is a key aspe Read More
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Analysis of Sand Bacteriophages Genome in Qatar
Authors: Umm-Kulthum Ismail Umlai, Annette Shoba Vincent and Valentin IlyinAbstract Objective: In this era of increasing antibiotic resistance (WHO)[1], we are running out of time as common bacterial infections are progressively rejecting drugs that would be standard for treatment. It is due to these reasons that research regarding bacteriophages, viruses that infect bacteria has seen a sudden revival. The Science Education Alliance- Phage Hunters Advancing Genomics and Evolutionary Science Read More
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Chemical Characterization and Source Identification of Beached Oil from Two Areas Along the North-Western Coast of Qatar
Authors: Nasser Alkaabi, Mohammad Alghouti, Nabil Zouari, Theis Solling, Steffen Bach and Jan H. ChristensenOver the years there have been several reports of oil spills affecting particularly the northern coast of Qatar. In most cases, the source of oil spills is not identified. The spilled oils are very resistant to degradation and can affect the coastal ecosystem over many years. Even today, after 24 years, some of the oil that was spilled during the 1991 Gulf War can be found in sand, close to the Al Zubahra UNESCO site. The Maersk Oil Res Read More
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Remarkable Thermal Stability of Nano-Crystalline Al-Mg-Li Alloys through the Addition of 1%Sr
Authors: Sara Iyad Ahmad and Khaled YoussefNanocrystalline metals -with grain sizes less than 100 nm- have proven to attain exceptional mechanical properties such as strengths that exceed those of coarse-grained and alloyed metals with grain size greater than 1 μm. As a result, such materials are to be acknowledged as the new class of high-performance engineering materials and to be implemented in various structural applications. The main reason behind the ultrahi Read More
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Diatoms & Dinoflagellates Associated with Seagrasses, Algae and Mangrove
Authors: Mohanad Mushtaha, Yousef Ashraf Nasr and Abdullrahman Al-MuftahMarine environments sustain a variety of living organisms starting from microorganisms up to large macro-organisms. This support comes with the diversity of marine habitats that are created naturally to provide certain conditions for each single organism. However, Mangrove areas are one of many important places that are considered to be highly productive and could be suitable for planktonic life. Mangroves can be defined a Read More
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Synthesis and Properties of Nanocrystalline BiTe-Base Thermoelectric Materials for Energy Applications
More LessThermoelectric (TE) is the science associated with converting the thermal energy into electricity based on the Seebeck effect. The attractive features of thermoelectric devices are their long life, low maintenance, highly reliable and they do not produce emissions harmful to the environment. Thermoelectric generators are used to provide electrical power in medical, military, and space applications where their de Read More
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Improving Water and Nutrient Use Efficiency for Crop Production in Dry Lands via Soil Amendments and Remote Sensing Techniques
More LessThe soils of the Arabian Peninsula in general and GCC countries in specific are dominantly sandy (low nutrient and water holding capacity, high infiltration rate). These soils need high inputs for crop production. To be cost-effective in agriculture production these soils need careful consideration to enhance water and nutrient use efficiency and increase crop production. A number of organic and inorganic amendme Read More
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Textile-Reinforced Mortar (TRM) System as a Strengthening Technique on Reinforced Concrete Beams
Authors: Muhammad Shekaib Afzal, Usama Ebead and Kshitij ShresthaThere is considerable investment in construction industry in Qatar for civil infrastructures and taking into account the severe environmental conditions, they would entail for proper maintenance, repair and strengthening for safe, continuous, uninterrupted, and efficient functionality. Reinforced concrete (RC) structural members, which constitute majority of construction works in Qatar, can be easily deteriorated by th Read More
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The Effect of Chilled Water Supply Temperature on the Energy Efficiency of the Chiller System
Authors: Abdulwahab Alyousef and Abdulwahab BukshaishaA steady-state model for a centralized cooling system is developed and utilized to evaluate its energy efficiency. The numerical model resolves the energy equations for a cooling tower and a centralized water-cooled chiller simultaneously. It requires inputs that are readily available. The user-inputs are the ambient conditions, the cooling tower air flow rate, the condenser water flow rate, the evaporator water flow rate, the su Read More
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Comparative Analysis of Antifungal Activity of Total Phenolics from Different Date Palm Cultivars Against Five Phyto Pathogenic Fungi
Authors: Resna Nishad and Talaat AhmedIntroduction: Pathogen attacks impose natural selection on plants to evolve complex arrays of defensive strategies. Among the diverse defensive mechanisms evolved by plants to withstand pathogen attack, the ability to synthesize an arsenal of low-molecular weight volatile and non-volatile chemicals including phenolics helps them to prepare a robust defense response against pathogen entry. Systemic induction and accumu Read More
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Sampling of Qatari Sand Microbes: Serious about B.cereus
Authors: Umm-Kulthum Umlai, Annette Shoba Vincent and Vincent IlyinObjective: A shortage of studies regarding the ecology of Qatar led to the sampling sand to determine the composition of microbes within the sand (below a certain size). This sampling began with a sand sample obtained from Al Rayyan, Doha Qatar. The sample was purified, and sequenced after isolating the DNA. A comprehensive analysis of the local Qatar sand sample shows a range of various microbes (which are smaller Read More
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Experimental Investigation on Gasoline and Diesel Fuels Surrogates Designed Via Computation and Property Integration Methods
Authors: Nimir Elbashir, Saad Intikhab, Sawitree Kalakul, Hanif Ahmed Choudhury and Rafiqul GaniAutomotive researchers attempts to simulate combustion of fuels in order to improve engine performance.[1] Conventional fuels are difficult to represent in these simulations due to their complex composition. Surrogates that meet American Society of Testing and Materials (ASTM) standards are a good alternative to conventional fuels. This study aims at design and analyzing surrogate mixtures for both gasoline and diesel. Su Read More
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Study and Comparison of PFC Rectifiers: Quasi Z Source, Traditional Flyback
Authors: Sinan Asaad Sabeeh and Fahad AlhuwaishelThis study focuses on comparing the Traditional Flyback PFC (F-PFC), and the Quasi Z-Source PFC (QZS PFC) on range of (36–720W) and input Voltage of (130, 200, 230V) with an output Vdc of 36 Volts while operating in Continuous Conduction Mode. The study has confirmed that F-QZS PFC has better THD%, P.F, and lower output current and voltage ripple relative with the output power. In addition, the stress on each main el Read More
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Growth of Hybrid Perovskites (HP) Light Harvesting Layer and TiO 2 Electron Transport Material for Solar Cells Application
Hybrid Perovskites (HP) recently emerged as alternative light harvesting layer to fabricate high efficiency thin film solar cells. The perovskite based solar cells took advantage of the experience gained in the field of the dye sensitizes solar cells and the extremely thin absorber (ETA) solar cells. It is worth mentioning that the structure of the perovskite solar cell is very similar to a dye sensitized solar cell and ETA solar cell. These ce Read More
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