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Qatar Foundation Annual Research Conference Proceedings Volume 2014 Issue 1
- Conference date: 18-19 Nov 2014
- Location: Qatar National Convention Center (QNCC), Doha, Qatar
- Volume number: 2014
- Published: 18 November 2014
101 - 150 of 480 results
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A Framework For Assessing Soil, Climate And Market Constraints To Improve Food Security In Qatar
Improving agricultural production in Qatar faces a number of challenges mainly related to adverse climatic conditions, quality of soils, scarcity of irrigation water, inappropriate crop rotations, market constraints and ineffective agricultural subsidies. Strategies to overcome these problems may include a) increasing domestic production in Qatar by using a combination of high-tech water-efficient field and greenhouse production s Read More
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Zinc Oxide Nanostructures For High Efficiency Solar Cells
Authors: Amir Abdallah and Nouar TaebtThe main two challenges hindering the deployment of solar cells in large scale are the high cost and low efficiency. One of the strategies to reduce the cost is by using thin film materials with enhanced solar cell conversion efficiency. However, thin film materials suffer from weak absorption and the presence of defects, which act as recombination canters for charge carriers. Various studies were conducted to improve absorption Read More
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Innovative Non-specific Elemental And Molecular Fingerprint Strategy For Produced Water Before Reuse
Authors: Hugues Preudhomme, Claude Sadois, Philippe Julien, Genevieve Lebas and Basem ShomarBackground and Objectives Produced water for future reuse is a key component of Qatar's Water Security Grand Challenge (WSGC) and forward progress within the Grand Challenge is dependent on comprehensive characterization and potential risks. To date, only major compounds of produced waters are characterized. For safety reason, a global fingerprint of both natural and anthropogenic trace organic and inorgani Read More
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Advanced Hard Coatings: Towards A Whole New World
BACKGROUND & OBJECTIVES: Improving materials properties is one of the biggest scientific issues of all the times. When it becomes impossible to further manipulate the raw material, one feasible way to push its properties beyond the theoretical limits is to modify the properties of the surface. That is where advanced surface coatings come in. From a manufacturing point of view, tools for machining are of particular interest. Th Read More
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Test Sample Development And Test Procedures For Establishing A Chloride Stress Corrosion Cracking Corrosion Atlas For Qatar
Authors: Hanan Farhat, Roy Johnsen and Demian RoulstonTest Sample Development and Test Procedures for Establishing a Chloride Stress Corrosion Cracking Corrosion Atlas for Qatar H. Farhat*, R. Johnsen** & D. Roulston** Abstract Oil and gas production, and petrochemical plants in offshore and onshore locations in Qatar are exposed to severe environmental conditions. The combination of high humidity, high concentration of chloride ions, high temperature and the prese Read More
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Highly Efficient Electrocatalysts For Recycling Co2
Authors: Shahid Rasul and Kazuhiro TakanabeThe development of artificial photosynthesis is one of the greatest scientific challenges of our times, not only to protect the environment but also to ensure global economic security. To mimic the natural photosynthesis process, a complete understanding of the natural photosynthesis process at the molecular level is essential to enable the production of inexpensive, lightweight, and high-energy-density fuels. Artificial photosynthe Read More
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Effect Of Sewage Sludge Application And Method Of Seeding On The Yield Of Barley Using Surface And Sprinkler Irrigation
Authors: Basel Ahmad Alar'raj and Henda MahmoudiArid regions in the world occupy about one quarter of the land surface area. In such regions, satisfactory crop production is impossible without irrigation because of irregular, sporadic and unpredictable rainfall leading to water shortage subsequently supplemental irrigation is a must for reasonable yield. Soil in these regions has poor physical and chemical properties. Since sludge is a source for organic matter and contai Read More
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Roasted-modified Date Pits In Remediation Of Bromide Ions From Desalinated Water: Kinetic Studies
Disinfection of drinking water is one of the extreme public health activities in Qatar. Chlorination, ozonation, ultra-violet, chloramination, and others are the most important treatment processes used and they can cause the formation of toxic by-products. The existence of bromide (Br-), for example, in water sources might cause in formation of brominated toxic by-products. Up-to-date drinking water treatment methodologi Read More
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Expression Patterns Of Genes Encoding Antioxidative Enzymes In Date Palm(phoenix Dactylifera) In Response To Salinity Stress
Background Salinity is one of the major abiotic stresses threatening crop productivity worldwide. Plants exposed to severe salinity suffer ionic toxicities, osmotic stress and oxidative damage that lead to inhibition of active photosynthesis, reduction of growth and cell death. Plants ability to detoxify reactive oxygen species (ROS, free radicals) and avoid oxidative damage is considered as one of the important mechanisms to Read More
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The Sabkhas Of Qatar: An Ideal Place To Study The Origin Of Dolomitic Hydrocarbon Reservoir Rocks
Many hydrocarbon reservoirs - in Qatar and worldwide - are constituted of dolomite. For this reason, the origin of this Ca-Mg carbonate mineral has been extensively studied by generations of geologists, with the goal of exploiting gas and oil from rock reservoirs in the most efficient way. However, despite more than two centuries of research, several fundamental questions regarding the origin of sedimentary dolomite re Read More
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Life Cycle Assessment Of Bio Diethyl Carbonate
Authors: Hind Mamlouk, Christian Nissing and Daniel Curulla FerreDue to the continuous increase in Earth's atmosphere of carbon dioxide, under the threat of climate change, green processes based on chemical fixation of CO2 have recently attracted much attention. A systematic and standardized methodology to evaluate environmental impacts of products is life-cycle assessment (LCA). Along the entire life cycle, all material and energy flows are collected. These flows are linked to potential Read More
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Peripheral Co2 Flooding To Enhance Gas Recovery In Carbonate Reservoir
Authors: Tarek Ali, Karim Youssef and Michael FraimManagement of production from gas reservoirs can be a challenging process. The challenge gets bigger when the reservoir is characterized by having a small pore size, such as the tight carbonate reservoirs which are prominent in this part of the world. In such conditions, condensate blockage becomes a real threat to productivity. Carbon dioxide can be injected into the reservoir to combat this threat. We built a reserv Read More
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Adsorptive Desulfurization Of Thiophene, Benzothiophene And Dibenzothiophene From Model Fuel By Carbons Derived From Waste Rubber Tires
Authors: Tawfik A. Saleh and Ibrahim DanmalikiThe removal of sulfur compounds from petroleum is increasingly important. In addition to its contribution to form particulate pollution, sulfur emission may cause some health problems. Regarding the negative impact of sulfur in industry, small amount of sulfur may poison the catalysts or diminish its efficiency. A commonly used method for the removal of sulfur-bearing species from fuel is hydrodesulphurization. However, Read More
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Trends In Aerosol Optical Thickness Over The Middle East: Impacts On Solar Power Generation
More LessQatar and the region are experiencing transformative growth over relatively very short periods of time, due primarily to hydrocarbon based energy resources. As the country pushes to meet growing global demand for its finite fossil fuel reserves, it is looking also to capitalize on renewable energy sources including solar power generation. However, the high ambient humidity, high annual average surface temperature, high Read More
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A Systematic Approach To Carbon Footprint Reduction Stategries In Industrial Parks
Authors: Dhabia Al-mohannadi and Patrick LinkeGlobal concerns of the effects of increased carbon dioxide emissions have pushed policy makers to adopt strict emission targets .The introduction of such targets will require strategies to achieve them in efficient ways. In Qatar, the world highest per capita carbon emitter, stationary emission sources are responsible for the majority of the country's footprint. Concentrated in industrial parks or clusters emissions cuts would be Read More
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Power Monitoring In Integrated Circuits
More LessPower monitoring is needed in most electrical systems, and is crucial for ensuring reliability in everything from industrial and telecom applications, to automotive and consumer electronics. Power monitoring of integrated circuits (ICs) is also essential, as today ICs exist in most electrical and electronic systems, in a vast range of applications. Many ICs have functional blocks across the chip that are used for different purposes. Read More
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Optical Properties And Surface Structure Of Anatase Tio2 For Solar Cells
By N.h JufairiTitanium dioxide (TiO2) films have been prepared by sol-gel dip coating technique, using titanium isopropoxide (TIP) as precursors. The structure and the phase of TiO2 films were analyzed by x-ray diffraction (XRD) and showed that films were anatase. Optical properties of the films were characterized by ultraviolet-visible (UV) spectroscopy. The optical band gap was calculated for anatase film layers 50, 100, 150 and 200 Read More
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Synthesis Of Transition Metal Nanoparticles Using Combustion Based Techniques
Authors: Anchu Ashok, Anchu Ashok, Anand Kumar and Yussuf Olasunkanmi KutiSolution combustion synthesis (SCS) is a widely used technique for synthesizing variety of high purity oxide nanoparticles. Two basic modes for combustion synthesis are the self-propagating high temperature synthesis (SHS) and Volume Combustion Synthesis (VCS). The first method is based on the reaction that is locally ignited by an external source (laser, tungsten coil etc) which ends up with an exothermic redox reaction in Read More
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Thermodynamic Analysis Of Heat And Mass Transport Phenomina In Phase Change Regenerators With Conductive Packing
Authors: Abdelhakim Mohamed Hassabou, Markus Spinnler and Wolfgang PolifkeThis paper discusses a comparative study on the role of conductive packing in Humidification-Dehumidification (HDH) solar desalination cycles under steady state conditions. Experimental and theoretical studies have been performed at the Technical University of Munich, Germany on HDH desalination system equipped with phase change material (PCM) encapsulated in spherical plastic shells and used as a conductive packi Read More
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Qatalum's 1st Cut Spl; Treatment And Applications
Authors: Omar Al-jarod and Aboubakr AbdullahSpent Pot Lining (SPL) is produced in thousands of tons annually as a waste from the aluminum industry. SPL is classified into two types, 1st and 2nd Cut SPL. The 1st cut, which is the material under investigation in this study, is a contaminated graphite/ceramics material (50 - 60% of graphite) that is used in lining the electrolytic cell within which aluminum is produced by the reduction of molten Al2O3. 1st Cut SPL is considered Read More
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Synthesizing New Anodes From Qatalum's 1st Cut Spl
Authors: Abdullah Hani Holozadah, Aboubakr Abdullah, Mufeed Odeh and Chris Devadas,Aluminum industry produces hundreds of tons of spent pot lining (SPL) waste every year. SPL is classified into two types: 1st cut and 2nd cut. The 1st cut SPL which is the material under study in this work is mainly composed of graphite (~ 60%), ceramic material and Al metal (~ 10%). On contrary with the 2nd Cut SPL, there is a consensus that the 1st cut SPL is a hazardous material and must be treated before dumping it i Read More
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The Use Of Wireless Sensor Networks In Agricultute A Tool For A Sustainable Food Supply In The Arab World
More LessTHE USE OF WIRELESS SENSOR NETWORKS IN AGRICULTUTE A TOOL FOR A SUSTAINABLE FOOD SUPPLY IN THE ARAB WORLD In this paper some ideas of how to apply the technological advancement of the wireless sensor networks (WSN) in agriculture as a tool for food security is discussed. This will include some examples where the technology can be applied, what changes can this technology brings to the traditional farmin Read More
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Source Term Modeling Of Cryogenic Liquid Vapor Formation By Experimental Investigation - Evaporation Regime And Convection Effect
Authors: Asma Sadia, Waqas Nawaz, Tomasz Olewski and Luc VechotSafe handling, storage and transportation of Liquefied Natural Gas (LNG) has been the root concern in the process industry due to the growing demand for ecological and clean alternative energy namely natural gas. Due to economic advantages in transportation, natural gas is transported in the liquid form. This calls for a thorough research in LNG safety due to its hazardous flammability properties. The study of consequen Read More
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Role Of Aromatics In Synthetic Fuels
Authors: Muaz Selam, Wajdi Ahmed, Moiz Bohra, Hafis Mohamed, Rehan Hussain and Nimir ElbashirThis paper describes our investigation into the effects of adding aromatic compounds to synthetic aviation fuels on the performance of these fuels. The work was done as an undergraduate research (UREP) project and was an extension to our group's previous studies which were aimed at characterizing blends of conventional and synthetic aviation fuels [1] and identifying optimum paraffinic building blocks for SPK [2]. Aro Read More
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Fiberglass Casing And Tubing In Highly Corrosive Environments
More LessThe UER formation in the Dukhan Field, Qatar has an aquifer associated with it. The formation water and sour crude associated with the formation and aquifer lead to many corrosion-related problems, and casings are being replaced at an almost bi-annual rate. Our research proposal was to replace these with fiberglass casing and tubing. Any tubing and casing that is replaced would need to withstand similar pressures and te Read More
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Investigating New Imaging Modality: Magnetic Particle Imaging
Authors: Ahmed El Ghamrawy and Steven M. WrightMagnetic Particle Imaging (MPI) is a newly found imaging modality. It utilizes superparamagnetic materials as tracers in the blood stream to obtain very high resolutions. MPI promises to have high sensitivity, high spatial resolution and no radiation compared to other imaging modalities. Most commercially available MRI tracers (used for MPI for now) are all non-harmful when compared to Iodine (used for CT scan) and Gadolini Read More
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Screening Of Some Qatari Plant Extracts For Anti Fungal Activities Of Plant Pathogenic Fungi
Authors: Ibtihal Mohamed and Talaat AhmadThe present study aimed to evaluate the antifungal activity of three desert plants extracts grown naturally in Qatar: (Al-rayhan) Ocimum basilicum, Shafallah (Capparis spinosa) and Qwaif(Prosopis juliflora)to study their inhibitory effect against three pathogenic fungi: Aspergillus niger, Fusarium oxysporum and Giberella baccata. Samples were collected from Qatar University farm. Filter disk method was used for antagonistic stud Read More
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Dna Barcoding Of Lizards (reptilia, Squamata) Of Qatar
Recent rapid development in Qatar has brought awareness and recognition of the importance to catalogue, describe and preserve its biodiversity. Traditional methods of using morphological characteristics for species identification, although important, requires years of experience and is in need of complete specimens before identity is certain. Recent worldwide endeavor of DNA barcoding by using a segment of the mitocho Read More
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Bacteriophage Diversity In The Ecology Of Qatar
Authors: Umm-kulthum Ismail Umlai and Annette VincentThe Science Education Alliance (SEA) Phage Hunters Advancing Genomics and Evolutionary Science, or PHAGES, is a national initiative in the United States, funded by the Howard Hughes Medical Institute (HHMI) and led by Professor Graham Hatfull from the University of Pittsburgh. This project is built around the discovery and analysis of mycobacteriophages in the biodiversity of the United States. For the first time, this research is Read More
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New Hereditary Hearing Loss (hhl) Genes/mutations Identified By High Throughput Technologies In The Qatari Population
Objectives: Hereditary Hearing Loss (HHL) is a common genetic disorder accounting for at least 60% of prelingual deafness in children. The long tradition of consanguinity, which is widespread among populations of Arabian Peninsula, increases the prevalence of HHL. It is one of the most frequent causes for school failure in Qatar. GJB2 gene plays a worldwide major role in HHL recessive forms while in Qatar it has a minor Read More
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Metformin Reverses Glucose Starvation Induced Endoplasmic Reticulum Stress And Autophagy In The Microvascular Endothelium
Authors: Suparna Ghosh, Samson Mathews Samuel, Hong Ding and Christopher TriggleBackground and Objective: Diabetes Mellitus is associated with a higher incidence of myocardial infarction (MI) and poor prognosis in affected individuals; however, treatment with the oral hypoglycemic drug, metformin, is associated with a reduction in cardiovascular morbidity and mortality. A MI reduces oxygen delivery and results in nutrient/glucose starvation (GS) with micro-vascular endothelial cells (MECs) recei Read More
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Exercise Induced Changes In Erythrocyte Membrane Proteome
More than 30 years ago people have learned that exercise promotes oxidative damage in human tissues. Since then, our knowledge on exercise-induced free radical production and their effect has advanced markedly. In the beginning research has mainly focused on detrimental effects of exercise-induced free radical production (e.g. oxidation of macromolecules); however today a new era of redox biology exist that center Read More
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The Immune-related Role Of Braf In Melanoma
BACKGROUND. The existence of a dichotomy between immunologically active and quiescent phenotypes has been recently recognized in several types of cancer. The activation of a Th1 type of immune signature has been shown to confer better prognosis and likelihood to respond to immunotherapy. However, whether such dichotomy depends on the genetic make-up of individual cancers is not known yet. In melanom Read More
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Prevalence Of Conventional Versus Non-conventional Cardiovascular Risk Factors In Patients Following Percutaneous Coronary Intervention For Acute Coronary Syndrome
Authors: R. Jay Widmer, Mohamed Gomaa, Martin Reriani, Timothy Morgenthaler, Jassim Al Suwaidi and Amir LermanTraditional risk factors often fail to correlate with event incidence, thus there is a need for novel risk assessment in order to predict events and guide therapy in patients with acute coronary syndromes (ACS) following percutaneous coronary intervention (PCI). Peripheral endothelial dysfunction (PED) and obstructive sleep apnea (OSA) can both predict cardiovascular events, yet the prevalence of PED and OSA in pati Read More
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Infection Rates And Phylogenetic Analysis Of Hepatitis G Virus (hgv)/gb Virus C (gbv-c) Among Qatari Blood Donors
Background: A new immerging nonpathogenic single stranded human RNA virus known as GBV-C/HGV was discovered in 1995. Both GBV-C virus and HCV have similar genome, but they replicate in different cell types. The incidence of GBV-C infection has been studied worldwide, however, to our knowledge; no previous studies were conducted in Qatar, thus the objectives of this study are: (i) to determine the rate of GBV-C inf Read More
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"whole Exome Sequencing Of A Family With 3 Sibling Affected By Bicuspid Aortic Valve Disease"
Background: Bicuspid aortic valve (BAV) is the most common cardiac malformation affecting 1-2% people worldwide. Despite its high prevalence, the pathogenesis of BAV is largely undetermined, although gene mutations leading to alterations in cell migration and signal transduction, in conjunction with non-genetic factors such as blood flow during valvulogenesis, may contribute to its formation prenatally. Objective: The Read More
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Alterations Of The Tumor Microenvironment By Her-2-neu-induced Creb Activation And Localization And Hypoxia
Cancer incidence is rising fast in Qatar, including in particular breast cancer. The expression of the oncogenic protein HER-2/neu is associated with an aggressive phenotype, and agents targeting this molecule have been successful in prolonging survival of breast cancer patients. Despite treatment progresses, metastatic breast cancer is still a fatal condition, and mechanisms of HER-2/neu regulation/resistance are not full Read More
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Effects Of Rituximab On The Response To Influenza Vaccine In Complete Remission Lymphoma Patients
Hematological Malignancies (e.g., leukemia and lymphoma) are among the top 5 causes of cancer death in the Middle Eastern Countries, including Qatar, Kuwait and Saudi Arabia. The monoclonal antibody rituximab, directed at the CD20 antigen, has become an essential drug for the treatment of Non Hodgkin Lymphoma (NHL). Although transient B cells depletion frequently occurs after rituximab treatment, it usually resolves aft Read More
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Lifetime Prevalence Of Common Mental Disorders In Qatar: Using Who Composite International Diagnostic Interview (who-cidi)
Background: Mental Disorders, particularly Depression, are recognised as one of the biggest burden of disease worldwide. Two of the top three burdens of disease in Qatar are mental health related. Yet, there is scarcity of lifetime prevalence data available to understand the impact in this country. Aim: This study uses the WHO Composite International Diagnostic Interview (WHO-CIDI), to measure the lifetime prevalence of t Read More
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Characterization Of Circular Rnas In Ovarian Cancer
Authors: Ikhlak Ahmed, Thasni K. A. Azis, Eman K. Al-azwani, Yasmin Ali Mohamoud, Arash Rafii and Joel MalekNoncoding RNAs such as ribosomal RNAs (rRNA), transfer RNAs (tRNA) micro RNAs (miRNA), small interfering RNAs (siRNA) and long noncoding RNAs (lncRNA) are the dominant products of eukaryotic transcription and collectively represent more than 95% of total RNA of the cell. In addition to contributing as the core components of the translational machinery (rRNAs and tRNAs), these noncoding RNAs have been shown to b Read More
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Hospital 7 Days Working. Recommendations And Feasibility
Authors: Rozh Jalil, Andrew Brodie and Jeetesh BhardwaHospital 7 days working. Recommendations and feasibility Introduction: There is increasing evidence that mortality rates for patients admitted to hospitals are higher at weekends. Furthermore, there is evidence that five-day working costs lives. Increased mortality rates over weekends equate to an increased risk of dying of 11% for a patient presenting on a Saturday and a similar rise of 16% for a Sunday when compared to pa Read More
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Apolipoprotein E Gene Polymorphism And The Risk Of Left Ventricular Dysfunction Among Egyptian Β-thalassemia Major.
Authors: Mona El-tagui, Mona Hamdy, Iman Shaheen, Hoda Agha and Hoda Abd-elfatahIn Egypt, β-thalassemia is the most common hereditary hemolytic anemia. Cardiac dysfunction, secondary to iron overload with formation of oxygen free radicals, is the most common cause of death in β-thalassemia patients. This study was designed to determine whether the allelic genotype of apolipoprotein E (Apo E), which exhibits antioxidant properties, could represent a genetic risk factor for the development of Read More
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A Comprehensive Approach To The Prediction Of Acute Calcular Cholangitis - The Qatar Experience
Authors: Hisham Allam, Mohammed Al Dosouky, Abdulaziz Farooq, Ahmed Naggar and Adarsh VijayIntroduction: The aim of the present study is to identify clinical, laboratory and radiological factors that can predict which patients may develop cholangitis. Methods: This is a retrospective case-control study based on patients admitted to Hamad Hospital from June'06 to November'10 with a diagnosis of AC secondary to CBD stones. The control group included patients with obstructive lithiasic jaundice not complicated by chol Read More
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Environment Gene Interaction In Parkinson's Disease (egi-pd).
Authors: Mohamed Salama, Thomas Rösler, Ali Shalash, Abdelhaleem Tantawy and Günter HöglingerEnvironment Gene Interaction in Parkinson's disease (EGI-PD) Mohamed M. Salama1, Thomas W. Rösler2, Ali Shalash3, Abdelhaleem Tantawy4, , Günter U. Höglinger2,5 1Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt 2Department for Translational Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), Munich, Germany 3. Department of Neurology, Faculty of Read More
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Overexpression Of Human S100a4 Gene In Drosophila Melanogaster Can Promote Metastasis
More LessThe major problem with cancer is the ability of cancer cells to infiltrate surrounding tissue (invasion) or to spread to distant organs (metastasis), decreasing patient survival. One of the Ca2+ binding proteins of the S100 family, S100A4, is expressed at elevated level in several forms of cancer and has the ability to induce metastasis and invasion in benign mammary cells. In order to generate a genetically tractable experimenta Read More
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Inhaled Magnesium For Moderate And Severe Pediatric Asthma
Objective: We hypothesized that nebulized magnesium sulfate added to combined bronchodilator and systemic steroid therapy would shorten time to discharge without undue risk. Study design: Patients aged 2 to 14 y with moderate and severe asthma (PRAM severity score >4) admitted to infirmary care were randomized double-blind to 800 mg nebulized isotonic magnesium sulfate or normal saline placebo via Aeroneb Pro Read More
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Application Of Bioluminescence, Cyto And Genotoxicity To Measure The Efficacy Of Oregano Oil As An Antimicrobial Agent
Authors: Nahla Omer Eltai, Vyv Salisbury and John GreenmanObjectives To develop and validate a new technique for hand hygiene for use in healthcare settings; to evaluate correlation between bioluminescence and conventional time consuming viable counting methods; to use bioluminescent constructs of bacterial pathogens as a real time biosensors for rapid bactericidal monitoring and to conduct in vitro toxicity tests of the Himalayan oregano oil (HOO) against human cell Read More
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Insulin Resistance-associated Impairment Of Preadipocyte Differentiation In Human Abdominal Obesity
OBJECTIVE: Differentiation capacity of human preadipocytes exhibits depot specific variation and is influenced by local cytokine production. The effect of obesity-induced insulin resistance on preadipocyte differentiation and its relation to proinflammatory cytokine release was investigated. RESEARCH DESIGN AND METHODS: Differentiation of preadipocytes obtained from subcutaneous & omental tissue biopsies isolated fro Read More
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Map Kinase Phosphatase Dusp1 Is Overexpressed In Human Obese And Modulated By Physical Exercise
Chronic low-grade inflammation and uncontrolled metabolic stress response are cardinal features of obesity; a major risk factor for the development diabetes. Dual specificity protein phosphatase 1 (DUSP1) is implicated in metabolism and energy expenditure. Mice lacking DUSP1 are resistant to high fat diet-induced obesity. However, the expression of DUSP1 has not been investigated in human obesity. In the current s Read More
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Effect Of Using Gingival Stem Cells And Therapeutic Ultrasound On Periodontal Ligament During Orthodontic Treatment In Beagle Dogs.
Previous studies have shown that low intensity pulsed ultrasound (LIPUS) can prevent orthodontically induced teeth root resorption (OITRR) in human. Also, stem cells have been used to treat different types of bone defects. Severe OITRR is still untreatable problem in orthodontics. The aim of this study was to evaluate the effect of local injection of osteogenically induced gingival stem cells (OIGSCs) and LIPUS on periodontal Read More
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