Faculty Contributions: Recent submissions
Now showing items 581-600 of 17983
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Hypoadiponectinemia in obese and diabetic subjects in the State of Qatar
( Karger , 2008 , Article)Background: Obesity is commonly associated with insulin resistance (IR), and is a common cause of type 2 diabetes. Adiponectin is an adipose tissue protein that enhances insulin sensitivity and has anti-atherogenic properties. ... -
The prevalence of vitamin d deficiency among female college students at Qatar University
( Saudi Arabian Armed Forces Hospital , 2011 , Article)N/A. -
The cardiovascular implication of single nucleotide polymorphisms of chromosome 9p21 locus among Arab population
( Wolters Kluwer Health , 2015 , Article)Background: Based on several reports including genome-wide association studies, genetic variability has been linked with higher (nearly half) susceptibility toward coronary artery disease (CAD). We aimed to evaluate the ... -
Erratum: ITRAQ-based Quantitative Protein Expression Profiling and MRM Verification of Markers in Type 2 Diabetes (Journal of Proteome Research (2012) 11 (5527-5537) DOI: 10.1021/pr300798z)
( American Chemical Society (ACS) , 2013 , Article)a Serum samples obtained from individual subjects were analyzed to determine the levels of glucose, Vitamin D among others (as described in methods). The value spreads within the group for each parameter are indicated as ... -
Total and high molecular weight adiponectin in patients with coronary artery disease
( Wolters Kluwer Health , 2009 , Article)BACKGROUND: Serum adiponectin inversely correlates with the extent of coronary artery disease (CAD). OBJECTIVES: To investigate the clinical significance of measuring high molecular weight (HMW) adiponectin in addition to ... -
A pilot study on metabolic syndrome and its associated features among Qatari schoolchildren
( Dove Medical Press , 2011 , Article)Aim: This pilot study aimed to evaluate the individual features of the metabolic syndrome (MeS) and its frequency in Qatari schoolchildren aged 6-12 years. Background: MeS has a strong future risk for development of diabetes ... -
Interleukin-28 and hepatitis C virus genotype-4: Treatmentinduced clearance and liver fibrosis
( Baishideng Publishing Group , 2012 , Article)AIM: To investigate the association between interleukin-28B (IL28B) genotype and response to treatment and hepatic fibrosis in patients with hepatitis C virus (HCV) genotype 4. METHODS: Two hundred and one HCV-genotype 4 ... -
Addressing bias in the definition of SARS-CoV-2 reinfection: implications for underestimation
( Frontiers Media , 2024 , Article)Introduction: Reinfections are increasingly becoming a feature in the epidemiology of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, accurately defining reinfection poses methodological ... -
Antibody-dependent enhancement (ADE) of SARS-CoV-2 in patients exposed to MERS-CoV and SARS-CoV-2 antigens
( Wiley , 2024 , Article)This study evaluated the potential for antibody-dependent enhancement (ADE) in serum samples from patients exposed to Middle East respiratory syndrome coronavirus (MERS-CoV). Furthermore, we evaluated the effect of severe ... -
Elevated serum leptin levels in patients with acute myocardial infarction; Correlation with coronary angiographic and echocardiographic findings
( Springer Nature , 2012 , Article)Background: To assess the relationship between serial serum leptin levels in patients with acute myocardial infarction (AMI) who received thrombolysis and the degree of coronary atherosclerosis, coronary reperfusion, ... -
Frequency and harmonics evaluation in power networks using fuzzy regression technique
( IEEE Computer Society , 2001 , Conference Paper)A new technique for frequency and harmonic evaluation in power networks is proposed in this paper. This technique is based on fuzzy linear regression and uses the digitized voltage samples, which are fuzzy numbers, to ... -
Fuzzy linear parameter estimation algorithms: A new formulation
( Elsevier , 2002 , Article)In this paper, we present a new formulation of a fuzzy linear estimation problem as one of the linear programming where the objective is to minimize the spread of the data points, subject to constraints on each measurement ... -
Frequency and harmonics evaluation in power networks using fuzzy regression technique
( Elsevier , 2003 , Article)A new technique for frequency and harmonic evaluation in power networks is proposed in this paper. This technique is based on fuzzy linear regression and uses the digitized voltage samples, which are fuzzy numbers, to ... -
Park's transformation application for power system harmonics identification and measurements
( Taylor & Francis , 2003 , Article)This paper presents the application of Park's transformation for identifying and measuring power system harmonics. One of the advantages of the proposed technique is that it does not need a model for the harmonics components ... -
On the application of αβ-transformation for power systems frequency relaying
( Institute of Electrical and Electronics Engineers Inc. , 2001 , Conference Paper)This paper presents a new and very accurate algorithm for power system frequency measurement. The proposed algorithm is based on αβ-transformation of the three phase voltages or current waveforms in the relay location, ... -
Effects of harmonic distortion on the active and reactive power measurements in the time domain: A single phase system
( IEEE Computer Society , 2001 , Conference Paper)A new application of the least error squares (LES) estimation algorithm is given for identifying, in the time domain, the active and reactive power from available samples of voltage and current waveforms. The digital ... -
Two digital filtering algorithms for fast estimation of symmetrical components in a power system: A static estimation approach
( Elsevier , 2003 , Article)This paper presents the application of two digital filters working together for fast estimation of power systems symmetrical components. The three-phase unbalanced system is transformed to two phases using α–β-transformation. ... -
Identification of individual types of harmonic loads in an electric power system bus
( Elsevier , 2004 , Article)Some buses in a power system feed power to loads that are sources of harmonics. This type of bus is called a complex bus. This paper provides a new application of the constrained least absolute value algorithm (LAV) to ... -
Power system frequency estimation based on simulated annealing: A variable frequency model
( Sharif University of Technology , 2004 , Article)This paper presents a new technique for measuring power system frequency, rate of change of frequency and the voltage amplitude and phase angle using the Simulated Annealing (SA) based optimization algorithm. The algorithm ... -
Space vector pulse width modulation scheme for three to seven phase direct matrix converter
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)In this paper a generalized multi-phase space vector theory is considered for developing the space vector modulation of a three-phase to seven-phase direct matrix converter (DMC). The modulation is based on the control of ...