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Search Results: 1 - 10 of 13343 matches for " Akmal El Ghor "
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Assignment of PCR markers to river buffalo chromosomes
Hanaa A Oraby, Soheir M El Nahas, H Anna de Hondt, Akmal El Ghor, Mohamed Samad
Genetics Selection Evolution , 1998, DOI: 10.1186/1297-9686-30-1-71
Reliability Analysis in Parallel and Distributed Systems with Network Contention
Hussein EL Ghor,Rafic Hage Chehade,Tamim Fliti
International Journal on Internet and Distributed Computing Systems , 2012,
Abstract: This paper tackles the reliability problem of task allocation in heterogeneous distributed systems in the presence of network contention. A large number of scheduling heuristics has been presented in literature, but most of them target maximizing the system reliability without taking network contention delay into consideration. In this paper, we deal with a more realistic model for heterogeneous networks of workstations by taking network contention as an important factor in our study. Although network contention is not considered in task scheduling, yet it has a great effect on the execution time of a parallel program. In our work, we rely on the hybrid algorithm investigated in [8] but with a new system model that allows us to capture network contention. We first develop a mathematical model for reliability based on the unreliability cost function caused by the execution of tasks on the system processors and by the inter-processor communication link where network contention caused by the inter-processor communication time in the link is considered as the main constraint. We then propose an evaluation function that approximates the total completion time of a given assignment by taking into account communication delays caused by network contention. In order to demonstrate the benefits of our model, we evaluate it by means of simulation. We show the significant improved accuracy and reliability of the produced schedules.
Increased tissue leptin hormone level and mast cell count in skin tags: A possible role of adipoimmune in the growth of benign skin growths
El Safoury Omar,Fawzi Marwa,Abdel Hay Rania,Hassan Akmal
Indian Journal of Dermatology, Venereology and Leprology , 2010,
Abstract: Background: Skin tags (ST) are common tumors. They mainly consist of loose fibrous tissue and occur on the neck and major flexures as small, soft, pedunculated protrusions. Decrease in endocrine, hormone level and other factors are thought to play a role in the evolution of ST. Leptin is an adipocyte-derived hormone that acts as a major regulatory hormone for food intake and energy homeostasis. Leptin deficiency or resistance can result in profound obesity and diabetes in humans. A role of mast cell in the pathogenesis of ST is well recognized. Aims: To investigate the role of leptin in the pathogenesis of ST and to clarify whether there is a correlation between mast cell count and leptin level in ST. Methods: Forty-five skin biopsies were taken from 15 patients with ST. From each patient, a biopsy of a large ST (length >4 mm), a small ST (length <2 mm) and a normal skin biopsy (as a control) were taken. The samples were processed for leptin level. Skin biopsies were stained with hematoxylin and eosin and toluidine blue-uranyl nitrate metachromatic method for mast cell count was used. Results: There was a significant increased level of leptin in the ST compared to the normal skin. It was highly significant in small ST than in big ST (P = 0.0001) and it was highly significant in small and big ST compared to controls, P = 0.0001 and P = 0.001, respectively. There was a significant increase in mast cell count in the ST, which did not correlate with the increased levels of leptin. Conclusion: This is the first report to demonstrate that tissue leptin may play a role in the pathogenesis of ST. The significant increase in the levels of leptin and mast cell count in ST may indicate a possible role of adipoimmune in the benign skin growths.
Nephropathic cystinosis in children: An overlooked disease
Soliman Neveen,El-Baroudy Ramzi,Rizk Akmal,Bazaraa Hafez
Saudi Journal of Kidney Diseases and Transplantation , 2009,
Abstract: Nephropathic cystinosis is rare genetic disease characterized by defective lysosomal cystine transport and increased lysosomal cystine. Corneal Cystine Crystal Scoring (CCCS) for diagnosis of nephropathic cystinosis was studied in all suspected children with renal Fanconi syn-drome and siblings of diagnosed cases over a two year period. In addition to oral cysteamine, cys-teamine eye drops were provided to all diagnosed patients and CCCS was followed up on a quarterly basis. Of 33 screened cases, 14 had corneal cystine crystals. Crystals were absent in two cystinotic patients under the age of 20 months. The mean age at diagnosis was 52.7 months and five patients had ERSD. After six months of treatment, the mean CCCS did not increase from the initial value of 1.81; associated with a decrease of 0.5 in two cases and a similar increase in two others. Scores decreased in two other patients after 12 months. Compliance was generally inadequate due to the high frequency of administration and the need for multi-drug regimen. CCCS is a simple and reasonably sensitive method for diagnosis of nephropathic cystinosis above two years of age. To-pical treatment with cysteamine eye drops prevents progression of deposits and may decrease it with adequate compliance. Further follow up is still recommended to monitor long term effects of both systemic and topical cysteamine therapy.
The Efficacy of Specific Essential Oils on Yeasts Isolated from the Royal Tomb Paintings at Tanis, Egypt
Akmal Ali SAKR,Mohamed Farouk GHALY,Mahmoud El-Sayed Farrag ABDEL-HALIEM
International Journal of Conservation Science , 2012,
Abstract: Yeast strains play an important role in the biodeterioration and biodegradation of paintings in ancient Egyptian tombs. Thirteen yeast were isolated from the royal tombs at Tanis (Oserkon II, Psunes and Shashanq), Sharkia Governorate, Egypt, dated back to 840 B.C., by using a sterile cotton swab. Those strains were identified as Saccharomyces cerevisiae, Candida albicans, C. lipolytica and Lodderomyces elongspous. The S. cerevisiae strains were halotolerant for sodium chloride, up to 10 %. Moreover, they caused a fading for the azurite blue color in laboratory cultures and S. cerevisiae was the most potent agent in fading the color. Five essential oils (lemon, spearmint, fennel, marjonam and rosemary) were used to control their growth. Spearmint and lemon oils were the most effective oils in inhibiting the growth of those strains, whereas marjonam, fennel and rosemary had no effect on their growth.
Early Stage Triple Negative Breast Cancer Has Significantly Better Outcomes than More Advanced Disease: A Single Centre Retrospective Review  [PDF]
Caroline Hamm, Swati Kulkarni, Rasna Gupta, Amin Kay, John Mathews, Khalid Hirmiz, Indryas Woldie, Akmal Ghafoor, Tarek Elfiki, Sindu Kanjeekal, Ming Pan, Kenneth Schneider, Junaid Yousuf, Mohammad Jarrar, Colvin Springer, Maher El-Masri
Journal of Cancer Therapy (JCT) , 2016, DOI: 10.4236/jct.2016.710069
Abstract: A retrospective, serial analysis of 181 triple negative breast cancer (TNBC) patients was undertaken at a regional cancer centre in Canada. The primary focus of the analysis was to investigate the effect of presenting stage in patients with TNBC on progression free and overall survival. We were able to demonstrate that patients presenting with an earlier stage breast cancer had a significantly superior progression free and overall survival when compared to more advanced stage. The adjusted multivariate cox-regression analyses for the overall and progression free survival suggest that the hazard of death was significantly lower for patients with stages I (HR = 0.09; 95% CI 0.03 - 0.24) and II (HR = 0.29; 95% CI 0.16 - 0.54) than for patients with stage III. The only other predictor of progression free survival besides stage, was receipt of radiotherapy (HR = 0.39; 95% CI 0.22 - 0.69) in the adjusted cox regression analysis. Less than 2% of patients presented with stage IV disease. The small numbers presenting with stage IV disease may have impact on the development of clinical and translational trials. Certainly there may be stage migration if staging included more standardized or more sensitive investigations such as PET scans, and this might an important consideration in developing clinical trials. Twenty-five percent of patients presented with stage I disease. It is important for patients with TNBC presenting with earlier stages of
The Professional Medical Journal , 2006,
Abstract: Objectives: To assess the results of Tubularized incised plate urethroplastyfor hypopadias repair and to find out the causes of failure. Design: Prospective randomized study. Place & Durationof Study: Department of urology, Allied Hospital Faisalabad. From May 2001 to April 2003. Patients & Methods: 20consecutive patients of Hypospadias were included in this study. All cases were managed by Tabularized incised platUrethroplasty (TIPU). Results: 12 cases presented with distal Hypospadias. 08 patients came with proximalHypospadias. Common age at presentation was below 5 years. Orthoplasty was done by Nasbit technique in 04patients. Overall success of tabularized incised plate urethroplasty for distal Hypospadias repair was seen in10(83.60%) cases. 01(8.30%) patients developed fistula and 01(8.30%) patient presented with total disruption. Meatalstenosis was observed in 01(8.30%) patient which responded well to regular dilatation. Overall success of TIPU forproximal Hypospadias repair was seen in 05(62.50%) patients. Fistula occurred in 02(25%) patients and total disruptionin 01(12.5%) patient. 01(12.5%) patient developed meatal stenosis which was managed by regular dilatation.Conclusion: TIPU can be applied as a valid option to treat all types of Hypospadias. Most of the complications canbe minimized by proper technique, prevention of hematoma formation and infection.
The Professional Medical Journal , 2006,
Abstract: Objective: To identify the epidemiological differences betweennormotensive pregnant women and women in pregnancy induced hypertension. Designs: A descriptive analytical casecontrol study. Setting: Department of Obs and Gynae of Sir Ganga Ram Hospital Lahore. Period: From January toDecember 2004. Materials & Methods: 2 groups with 100 patients in each were studied. Results: PIH is morecommon in young, obese, primigravidas with a family or past history of PIH or hypertension and in those with poorsocioeconomic status and no regular dietary calcium supplementation.
Methods and algorithms of the spelling control and correction on the basis of fuzzy qualifier with MIMO-structure
Akmal Ahatov
Applied Technologies and Innovations , 2011,
Abstract: The paper shows results of developing the conceptual principles and methods in construction of hyper semantic net for natural languages spelling control and correction on a basis of neural networks and methods of fuzzy logic at the expense of expert knowledge and account of uncertainty. The ways of formalization are offered for linguistic variable and parameters, represented quantitatively and qualitative, and for performance of fuzzy sets membership functions. The operability of net including various nodes of graph model is tested. The realization of net is carried out on the basis of model with MIMO-structure, combining in itself property of the neuro-fuzzy qualifier and fuzzy production system.
Discoloration of Ancient Egyptian Mural Paintings by Streptomyces Strains and Methods of Its Removal
Akmal Ali SAKR,Mona Foad ALI,Mohamed Farouk GHALY,Mahmoud El-Sayed Farrag ABDEL-HALIEM
International Journal of Conservation Science , 2012,
Abstract: Streptomyces isolated from mural paintings at Tell Basta and Tanis tombs were identified using 16S rDNA sequencing method. These Streptomyces strains caused discoloration of mural paintings with irreversible red stains of carotenoid pigment. A mixture of n-hexan and acetone (92:8 v/v) was the best solvent for extracting and purification of red pigment from biomass of Streptomyces. Dimethyl sulfoxide (DMSO) and N,N-dimethylformamide (DMF) were the most effective in treatment of these red stains without changing the paintings or stone surfaces.
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