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Search Results: 1 - 10 of 231 matches for " Hammad Nazeer "
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Does Comorbidity Increase the Risk of Dengue Hemorrhagic Fever and Dengue Shock Syndrome?
Shahid Mahmood,Saadia Hafeez,Hiba Nabeel,Urooj Zahra,Hammad Nazeer
ISRN Tropical Medicine , 2013, DOI: 10.1155/2013/139273
Abstract: Background. Dengue fever is an emerging public health problem in Pakistan. The aim of this study was to determine the relationship between comorbid conditions in individuals suffering from dengue fever and the development of dengue hemorrhagic fever or dengue shock syndrome. Methods. In this age- and sex-matched case control study, total of 132 cases of dengue hemorrhagic fever/dengue shock syndrome and 249 randomly selected controls were recruited from two major teaching hospitals of Lahore, Pakistan. A semistructured questionnaire was used to collect data through interview and by reviewing clinical records. SPSS version 18 was utilized for statistical analysis including conditional logistic regression. Results. Odds of developing dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS) among diabetics are higher than in controls, but this association was not found statistically significant (OR. 1.26; 95% CI. 0.78–2.03; ). Similarly, no association was observed in individuals suffering from hypertension (OR. 0.93; 95% CI. 0.57–1.49; ). Odds of developing DHF and DSS were higher for bronchial asthma (adjusted OR. 1.34) and pulmonary tuberculosis (adjusted OR. 1.41); however P values were insignificant. Conclusion. Presence of diabetes mellitus, hypertension, ischemic heart disease and bronchial asthma among patients contracted dengue fever will not increase the risk of dengue hemorrhagic fever and dengue shock syndrome. 1. Background Dengue fever is an emerging public health problem prevalent mostly in tropical and subtropical regions of the world. It is an arbovirus infection transmitted through Aedes aegypti and Aedes albopictus mosquito species. Four dengue virus serotypes (DENV-1, DENV-2, DENV-3, and DENV-4) have yet been identified and are responsible for most of the clinical manifestations, ranging from asymptomatic disease to symptomatic dengue fever (DF) and dengue hemorrhagic fever (DHF). In majority of patients, infection is self-limiting, but in small proportions, the resultant dengue shock syndrome (DSS) may increase morbidity and mortality. Infection with one serotype does not give protection against other dengue viruses, yet sequential infections increase the risk of developing dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS) [1, 2]. Dengue is endemic in many Southeast Asian countries and Western pacific region [2]. About 2.5 billion people (40% of world’s population) are at risk of dengue transmission. The World Health Organization (WHO) estimates that 50 to 100 million infections occur yearly, including 500,000 DHF
Seroprevalence of Dengue IgG Antibodies among Healthy Adult Population in Lahore, Pakistan
Shahid Mahmood,Hiba Nabeel,Saadia Hafeez,Urooj Zahra,Hammad Nazeer
ISRN Tropical Medicine , 2013, DOI: 10.1155/2013/521396
Abstract: Background. Dengue is a mosquito-borne flavivirus infection prevalent in tropical and subtropical regions around the world. Aim of this study was to determine seroprevalence of anti-dengue IgG antibodies in healthy adult population of Lahore and also describe risk factors in relation to dengue seropositivity. Methods. In this cross-sectional study, 274 healthy adult individuals aged 15 years and above were randomly selected using multistage sampling technique. These individuals were interviewed between July–September 2012, using a semistructured questionnaire, followed by drawing 3?mL of their venous blood for dengue IgG test. Nova Tech ELISA kit with sensitivity and specificity of 96.5% and 97.5%, respectively, was used for serology. Results. Out of 274 participants, 184 (67.2%) were found to be positive for dengue IgG antibodies. Seroprevalence was higher among individuals with poor awareness about potential breeding sites for dengue mosquito (63.6%), followed by the subjects who had poor knowledge about dengue signs/symptoms and complications (52.2% and 68.5%, resp.). Conclusion. About two-third of healthy population of Lahore was also seropositive for anti-dengue IgG during July–September 2012, indicating a considerable burden of subclinical dengue infection in the city. Males were predominantly affected than the females. We found no statistical association between dengue IgG seropositivity and socioeconomic status, occupation, and knowledge about the disease. 1. Background Dengue is a mosquito-borne flavivirus infection prevalent in tropical and subtropical regions around the world, and it has emerged as an important global public health challenge. In recent years, disease transmission has increased predominantly in urban and semiurban areas owing to economic reasons and migration. There are four distinct but closely related serotypes (DEN-1, DEN-2, DEN-3, and DEN-4) of the dengue virus known; however, DEN-2 infection is more prevalent in South Asian region including Pakistan [1, 2]. Recovery from one type of virus infection, though, provides lifelong immunity against that particular serotype, but there is a strong evidence suggesting the occurrence of severe clinical manifestations of dengue fever in subsequent infection from other serotypes [3]. Infective female Aedes aegypti mosquito species is the primary vector for dengue which transmits the virus through biting humans. On the other hand, Aedes albopictus is responsible for maintaining the endemicity in the population [4]. Absence of an effective vaccine, vector control measures, and personal
A Visual Cryptography Based Digital Image Copyright Protection  [PDF]
Adel Hammad Abusitta
Journal of Information Security (JIS) , 2012, DOI: 10.4236/jis.2012.32012
Abstract: A method for creating digital image copyright protection is proposed in this paper. The proposed method in this paper is based on visual cryptography defined by Noor and Shamir. The proposed method is working on selection of random pixels from the original digital image instead of specific selection of pixels. The new method proposed does not require that the watermark pattern to be embedded in to the original digital image. Instead of that, verification information is generated which will be used to verify the ownership of the image. This leaves the marked image equal to the original image. The method is based on the relationship between randomly selected pixels and their 8-neighbors’ pixels. This relationship keeps the marked image coherent against diverse attacks even if the most significant bits of randomly selected pixels have been changed by attacker as we will see later in this paper. Experimental results show the proposed method can recover the watermark pattern from the marked image even if major changes are made to the original digital image.
Knowledge Discovery in Data: A Case Study  [PDF]
Ahmed Hammad, Simaan AbouRizk
Journal of Computer and Communications (JCC) , 2014, DOI: 10.4236/jcc.2014.25001
Abstract:

It is common in industrial construction projects for data to be collected and discarded without being analyzed to extract useful knowledge. A proposed integrated methodology based on a five-step Knowledge Discovery in Data (KDD) model was developed to address this issue. The framework transfers existing multidimensional historical data from completed projects into useful knowledge for future projects. The model starts by understanding the problem domain, industrial construction projects. The second step is analyzing the problem data and its multiple dimensions. The target dataset is the labour resources data generated while managing industrial construction projects. The next step is developing the data collection model and prototype data ware-house. The data warehouse stores collected data in a ready-for-mining format and produces dynamic On Line Analytical Processing (OLAP) reports and graphs. Data was collected from a large western-Canadian structural steel fabricator to prove the applicability of the developed methodology. The proposed framework was applied to three different case studies to validate the applicability of the developed framework to real projects data.

Feasibility of Protection Zones for Water Resources in Arid Areas: Case Study; Duyuk Nueimah Shosa Springs, Jericho, Palestine  [PDF]
Marwan Ghanem, Mahmoud Hammad
Journal of Environmental Protection (JEP) , 2015, DOI: 10.4236/jep.2015.62013
Abstract: Urbanization and different human-economic activities put increasing pressure on the ground water quality, which is considered as the main drinking water resources in Palestine. Protecting the spring water resources in Palestine is one major issue for the continuity of the availability of the water resources. An economic feasibility study was conducted for the Nuewimah-Shosha-Dyuk spring system in order to assess the economical factor for the induced methodology of the protection zones. The spring system has multiple users from different sectors (i.e., domestic, agriculture, commercial and public use) and multi-year cost benefit analysis technique used to show the feasibility of water protection zones on the long run. The study shows that even in arid areas in Palestine, small quantities are derived from springs-implementation of water protection zones is still feasible; the results of this study emphasize on importance and feasibility of water resources protection zones.
Genetic Differentiation and Phenotypic Plasticity I. Responses in Three Plantago lanceolata L. Populations upon Changes in Mineral Supply
Ibtisam Hammad
Pakistan Journal of Biological Sciences , 2002,
Abstract: Three populations of Plantago lanceolata L. were analyzed for genetic differentiation and phenotypic plasticity. Eight randomly taken samples of each population were grown at two nutrient levels and subjected to alterations in mineral supply. Growth and root respiration was followed during the experiment. With respect to all measured characteristic genetic differentiation on population level was demonstrated. Overall phenotypic plasticity of the measured characteristics and differences in estimated genetic variation were present. High relative growth rate was correlated with high root respiration. High relative growth rate was correlated with high root respiration and high Ca2+ - Mg2+ - stimulated ATPase activity in roots. Ecological significance of the results and correlation with habitat properties are discussed.
Heavy metals burden in Kidney and heart tissues of Scarus ghobban fish from the eastern province of Saudi Arabia
Waqar Ashraf, Zahid Nazeer
Bulletin of the Chemical Society of Ethiopia , 2010,
Abstract: Levels of selected heavy metals (Pb, Co, Cu, Ni, Zn, Mn and Cd) in the heart and kidney tissues of parrot fish, collected from the Arabian Gulf, Eastern Province of Saudi Arabia, were determined by wet-digestion based atomic absorption method. The results showed that accumulation pattern of analyzed metals in the kidney tissues followed the order; Zn > Cu > Co > Pb > Ni > Mn > Cd. In the heart tissue the analyzed metals followed similar pattern of metal accumulation. The average Pb (0.85 ± 0.50 ppm), Cd (0.12 ± 0.07 ppm), Ni (0.92 ± 0.35 ppm) and Mn (0.86 ± 0.43 ppm) were significantly lower in the heart tissue whereas Zn (26.4 ± 12.9 ppm) and Cu (3.29 ± 2.18 ppm) were higher in the kidney tissues. In general, the data indicated that marine fish from the sampling site of the Arabian Gulf contain relatively less burden of heavy metals in their tissues. KEY WORDS: Arabian Gulf, Fish, Kidney and heart tissue, Heavy metals Bull. Chem. Soc. Ethiop. 2010, 24(1), 139-143.
QSMSR QUALITATIVE MODEL
Shahbaz Nazeer,Tahir Abdullah
International Journal of Engineering Innovations and Research , 2012,
Abstract: Software architecture design and requirement engineering are core and independent areas of engineering. A lot of research, education and practice are carried on Requirement elicitation and doing refine it, but it is a major issue of engineering. QSMSR model act as a bridge between requirement and design there is a huge gap between these two areas of software architecture and requirement engineering. The QSMSR model divide into two sub model qualitative model and Principal model in this research we focus on Qualitative model which further divide into two sub models fabricated model and classified model. Classified model make the sub groups of the role and match it with components. The Fabricated model link QSMSR Principal Model to an architecture design. At the end it provides the QSMSR Architecture model of the system as output.
Lateral Thoracic Maningocele : Anaesthetic Implications
Nazeer Ahmed K
Al Ameen Journal of Medical Sciences , 2008,
Abstract: Meningomyelocele is a broad term representing herniation of extracranial contents through a congenital defect in the vertebral column. If only cerebrospinal fluid (CSF) and meninges herniate, it is termed as a meningocele. A meningoencephalocele is herniation of neural elements along with meninges. Anaesthetic challenges in management of thoracic meningomyelocele include securing the airway with intubation in lateral or supine position, intraoperative prone position with its associated complications and accurate assessment of blood loss and prevention of hypothermia. We report a case of a thoracic meningocele posted for resection and discuss its anaesthetic implications
Heavy metals burden in kidney and heart tissues of Scarus ghobban fish from the eastern province of Saudi Arabia
Waqar Ashraf,Zahid Nazeer
Bulletin of the Chemical Society of Ethiopia , 2010,
Abstract: Levels of selected heavy metals (Pb, Co, Cu, Ni, Zn, Mn and Cd) in the heart and kidney tissues of parrot fish, collected from the Arabian Gulf, Eastern Province of Saudi Arabia, were determined by wet-digestion based atomic absorption method. The results showed that accumulation pattern of analyzed metals in the kidney tissues followed the order; Zn > Cu > Co > Pb > Ni > Mn > Cd. In the heart tissue the analyzed metals followed similar pattern of metal accumulation. The average Pb (0.85 ± 0.50 ppm), Cd (0.12 ± 0.07 ppm), Ni (0.92 ± 0.35 ppm) and Mn (0.86 ± 0.43 ppm) were significantly lower in the heart tissue whereas Zn (26.4 ± 12.9 ppm) and Cu (3.29 ± 2.18 ppm) were higher in the kidney tissues. In general, the data indicated that marine fish from the sampling site of the Arabian Gulf contain relatively less burden of heavy metals in their tissues.
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