Jawad Ahmad

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Introduction Mycophenolate mofetil (MMF) is an immunosuppressive drug widely used in solid organ and bone marrow transplantation as well as in autoimmune disorders like systemic lupus erythematosus. It acts by inhibiting the inosine monophosphate dehydrogenase (IMPDH) in the de novo pathway of guanine (purine) synthesis [1]. Aft er oral administration, MMF(More)
Disruptions in mitochondrial dynamics may contribute to the selective degeneration of dopamine (DA) neurons in Parkinson's disease (PD). However, little is known about the normal functions of mitochondrial dynamics in these neurons, especially in axons where degeneration begins, and this makes it difficult to understand the disease process. To study one(More)
AIMS Achalasia is a rare incurable neuromuscular disorder of the oesophagus. A number of treatment options are available. We reviewed our results of laparoscopic cardiomyotomy over a 30 month period. METHODS 18 patients with manometric features of achalasia underwent surgery between 2004 and 2006. Pre and postoperative weight and dysphagia scores were(More)
Due to the interesting nonlinear dynamic properties of chaotic maps, recently chaos-based encryption algorithms have gained much attention in cryptographic communities. However, many encryption schemes do not fulfil the minimum key space requirement, which is an essential concern in many secure data applications. In this paper, an efficient chaos-based(More)
—This paper describes the design of a voltage based maximum power point tracker (MPPT) for photovoltaic (PV) applications. Of the various MPPT methods, the voltage based method is considered to be the simplest and cost effective. The major disadvantage of this method is that the PV array is disconnected from the load for the sampling of its open circuit(More)
BACKGROUND Bile duct injury is a rare complication of cholecystectomy. The aims of this study were to analyse the mechanism and outcome of biliary complications and determine the Northern Ireland incidence of bile duct injury over the last decade. METHODS Annual numbers of cholecystectomies were obtained from the Northern Ireland Hospital Inpatient System(More)
With the evolution of technologies, the size of an image data has been significantly increased. However, traditional image encryption schemes cannot handle the emerging problems in big data such as noise toleration and compression. In order to meet today’s challenges, we propose a new image encryption scheme based on chaotic maps and orthogonal matrices.(More)
The Model for End-Stage Liver Disease (MELD) score incorporates serum bilirubin, creatinine, and the international normalized ratio (INR) into a formula that provides a continuous variable that is a very accurate predictor of 90-day mortality in patients with cirrhosis. It is currently utilized in the United States to prioritize deceased donor organ(More)
In this paper, a simulation model of a solar cell is defined to allow estimation of the electrical behavior of the cell with respect changes on environmental parameter of temperature and irradiance. Maximum Power Point Trackers (MPPT) play an important role in photovoltaic (PV) power systems because they maximize the power output from a PV system for a(More)