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Search Results: 1 - 10 of 110099 matches for " Mohammed Ali Jaffer I. "
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Note on oscillationa theorems for third order non-linear difference equations
Mohammed Ali Jaffer I.,Selvaraj B.
Tamkang Journal of Mathematics , 2012, DOI: 10.5556/j.tkjm.43.2012.491-498
Abstract: In this paper some sufficient conditions for oscillation of all solutions of certain difference equations are obtained. Examples are given to illustrate the results.
Addressing the Threat of Chronic Diseases in Oman
Jawad A. Al-Lawati, MD, MPH,Ruth Mabry, MPH,Ali Jaffer Mohammed, MD, MRCGP(I)
Preventing Chronic Disease , 2008,
Abstract: IntroductionThe overall health status of the Omani population has evolved over the past 4 decades from one dominated by infectious disease to one in which chronic disease poses the main challenge. Along with a marked reduction in the incidence of infectious diseases, improvements in health care and socioeconomic status have resulted in sharp declines in infant and early childhood mortality and dramatic increases in life expectancy. MethodsFocusing on the time period from 1990 through 2005, we reviewed relevant epidemiological studies and reports and examined socioeconomic indicators to assess the impact of the changing disease profile on Oman’s economy and its health care infrastructure.ResultsOver the next 25 years, the elderly population of Oman will increase 6-fold, and the urbanization rate is expected to reach 86%. Currently, more than 75% of the disease burden in Oman is attributable to noncommunicable diseases, with cardiovascular disease as the leading cause of death. The distribution of chronic diseases and related risk factors among the general population is similar to that of industrialized nations: 12% of the population has diabetes, 30% is overweight, 20% is obese, 41% has high cholesterol, and 21% has the metabolic syndrome. ConclusionUnless reforms are introduced to the current health care system, chronic diseases will constitute a major drain on Oman’s human and financial resources, threatening the advances in health and longevity achieved over the past 4 decades.
The Barriers and Enablers of the Educational Cloud: A Doctoral Student Perspective  [PDF]
Mohammed Ali
Open Journal of Business and Management (OJBM) , 2019, DOI: 10.4236/ojbm.2019.71001
Background, Motivation and Objective: Cloud computing (CC) within UK HEIs is an emerging research phenomenon. When adopting new innovations, it is important to assess whether it will add value to the organisation. Contri-bution/Method: This exploratory empirical research is derived from the technology, organisation and environment model (TOE), which targeted higher education institutions (HEIs). A qualitative study, which explored the potential barriers and enablers of CC adoption by HEIs from a doctoral stu-dent perspective, was conducted, where 32 students at a University that had recently adopted the educational cloud situated in North-west England, were interviewed. Results/Discussion/Conclusion: The results showed that the most significant enablers of the educational cloud were cost efficiency, scal-ability, flexibility and mobility, and especially collaboration among students. Whereas the most significant barriers of the educational cloud were security and cultural resistance. In conclusion, the adoption rate of CC is increasing gradually in UK HEIs, which is mostly down to the cost efficient and col-laborative nature of the educational cloud, but there is still the issue of pri-vacy and trust in the educational cloud which impedes adoption.
Diphenhydramine Compact-Cell Sensor  [PDF]
Mohsen M. Zareh, Mohammed I. ALahmdi, Ali A. Keshk
Journal of Sensor Technology (JST) , 2016, DOI: 10.4236/jst.2016.61001
Abstract: The construction and performance characteristics of a novel (diphenhydramine) DPH CC-sensor based on DZCE were reported in this work. The CC-membrane was prepared by incorporating of (diazacrown ether) DZCE and/or (tetraflorophenyl borate) TFPB into a plasticized poly(vinyl chloride) membrane. The CC-sensor revealed a Nernstian behavior over a DPH-concentration range (9.1 × 10-3 - 6.3 × 10-7 mol ·L-1), and relatively low detection limit (1 × 10-7 mol ·L-1). The potentiometric response was independent on the pH of the solution in the range of 7 - 10. The DPH-CC showed a very short response time (<5 s). It showed good selectivity towards different cations and pharmaceutical compounds. The relative selectivity coefficient was applied for evaluation of the selectivity properties of the DPH-CC. The DPH-CC was used successfully for determination of DPH in its samples. The found recovery range was 95% - 98.5%, and the standard deviation value ranged between 0.13 - 0.42. The DPH-CC facilitates the analysis of DPH directly without pretreatment and it can be built-in as a detector in chromatographic apparatus. It can be used as a tool for on-line monitoring of the drug levels.
Mystique in Arabic Poetics: An Inquiry into Cultural Dominant  [PDF]
Yassir Mohammed Nasr Ali
Advances in Literary Study (ALS) , 2015, DOI: 10.4236/als.2015.31002
This paper argues that the paucity of innovative work in Arabic critical tradition is a ramification of an aesthetic of conformity to the dominant patterns in Arabia. The preoccupation with specific aspects in poetics does not contribute to the framing of intellectual debates past and present, but discloses an exclusionary discourse with a narrow scheme of knowledge. Such a limitation in epistemology is symptomatic of a wider one at the level of formative ideals. The present article attempts to unfold the crisis in this epistemology by problematizing the mainstream poetics of culture and seeking new possibilities of reflection beyond the edges of definition.
Partial Quality Assessment of 60Co-Teletherapy Machine Performance  [PDF]
Mohammed A. Ali Omer
Open Journal of Radiology (OJRad) , 2015, DOI: 10.4236/ojrad.2015.54032
Abstract: The aim of this study was to assess the performance of 60Co-teletherapy unit at Radiation and Isotopes Center in Khartoum, using the common tools used for quality control (Front pointer, Graphic paper, Pin, Non-screen film, meter and Check plate). The collected and analyzed data revealed that: there was a difference between the calculated theoretical field size (FS) and the measured one relative to the change of SSD; and the average FS shift was 0.9 cm relative to the standard one, while the machine isocenter was almost fixed at 0° with a shift of 0.003 cm, which was within the standard limit (0.2 cm). The diaphragm isocenter showed a shift of ±0.36 cm (i.e. in clock and anti clock wise) in average relative to standard limit (±0.3 cm) and the couch vertical isocenter (CVI) relative to the SSD changes was exceeded the standard limit (0.2 cm) by a factor of 0.9 cm. Also the SSD determined by the optical distance indicator was greater than the actual SSD (determined by Front pointer and measured by scale meter) by an average of 0.8 cm; which exceeded the limit (0.3 cm) by an average factor of 0.5 cm. The study also showed that the penumbra profile (1.5 cm) was less than the actual specified for 60Co-teletherapy machine, while the radiation beam was so homogeneous across the field size.
Investigations for Improved Genetic Transformation Mediated by Agrobacterium tumefaciens in Two Rice Cultivars
Shaukat Ali,Zhang Xianyin,Qingzhong Xue,M. Jaffer Hassan
Biotechnology , 2007,
Abstract: In this study, we established an efficient Agrobacterium-mediated transgenic system in rice (Oryza sativa L.). During the studies in the japonica (Xiushui-11) and indica rice cultivars (XC-95), the role of various factors responsible for virulence of Agrobacterium was screened more carefully to establish a better transformation system for the rice cultivars. MS and AB media (as VIM) proved to be efficient for Xiushui-11 and XC95, respectively. 100 μM AS (acetosyringone), pH 6.0 (VIM and COM) and use of either sucrose, glucose (Xiushui-11) or sucrose (XC-95) produced the best results for both of japonica and indica rice. Bacterial cell density A600 0.4-0.6 for 10-15 min was the most favorable optimized condition. Completely dark (Xiuishui-11) and light (XC-95) conditions during co-cultivation period were found to be ideal for transformation process. The significance of achieved results has been discussed properly.
Mohammed ALI
The Turkish Online Journal of Distance Education , 2012,
Abstract: This paper examines the conceptual foundations of self-concept, self-esteem and the self as they relate to disabled students in the context of physical education. Disable school children experience severe discriminations in society and within the school system, especially if the school is the mainstream type. With increasing emphasis on inclusiveness in school to different groups of excluded children, the need to thoroughly examine the psychological frame of mind of these children is now more important than ever before. Consequently, this paper sought to uncover the fundamental tenets of self-concept of disabled learners and highlight the key characteristics of disabled children. The paper concludes by with an analysis of the major impacts that disabled learners self-concept has on participation in physical education activities.
ApolipoproteinA1-75 G/A (M1-) polymorphism and Lipoprotein(a); Anti- vs. Pro-Atherogenic properties
Ali I Albahrani, Jannete Usher J, Mohammed Alkindi, Eileen Marks, L Ranganath, Said Al-yahyaee
Lipids in Health and Disease , 2007, DOI: 10.1186/1476-511x-6-19
Abstract: Overnight fasting blood samples were collected from a cohort of high-risk Omani population, 90 non-diabetic subjects and 149 type 2 diabetes mellitus (T2DM) subjects for genotype and phenotype studies.The M1+ and M1- alleles frequencies were 0.808 and 0.192 for M1+ and M1-, respectively, comparable to the frequency of apoA1 (M1+ and M1-) amongst a healthy Omani population, 0.788 and 0.212, respectively.The frequencies of the hetero- and homozygous subjects for the MspI polymorphism at -75 (M1-) of the apoA1 gene were in Hardy-Weinberg equilibrium.The mean Lp(a) concentration was significantly higher(P = 0.02) in subjects carrying M1- allele compared to M1+ allele of the APOA1 gene with an odd ratio of 2.3(95% CI, 1.13–14.3), irrespective of gender and the diabetic status.ApolipoproteinA1-75 G/A (M1-) polymorphism is relatively common and is positively associated with Lp(a) and therefore, may confer a potential risk for cardiovascular disease (CVD).Apolipoprotein-A1 (apoA1) is the major apoprotein constituent of HDL and an in vivo activator of lecithin-cholesterol-acyltransferrase (LCAT). An inverse relationship has been reported between the apoA1 and HDL and CVD in the general population [1,2]. The protected effect of apoA1 and HDL is mediated mainly through the promotion of cholesterol efflux from peripheral cells. In addition, both HDL and apoA1 may also have antioxidant, antithromobotic, and anti-inflammatory properties, which could have important anti-atherogenic effects [3]. The plasma concentrations of apoA1 and HDL are reported to be influenced by gender, BMI, age, and a number of environmental factors, e.g. smoking, alcohol intake, exercise and lipid lowering medications [1,3]. A strong genetic regulation of the concentration of HDL and apoA1 has been established in twin and family studies, the heritability of HDL concentration is around 40% [3,4]. A number of studies had reported that the inter-individual variations in plasma apoA1 and HDL are influenced to
Efficacy of artemether-lumefantrine as a treatment for uncomplicated Plasmodium vivax malaria in eastern Sudan
Abdallah Tajeldin M,Ali Abdel Aziem A,Bakri Mohammed,Gasim Gasim I
Malaria Journal , 2012, DOI: 10.1186/1475-2875-11-404
Abstract: Background Artemisinin-based combination therapy (ACT) is the treatment of choice for uncomplicated Plasmodium falciparum malaria in most areas of the world, where malaria is endemic, including Sudan. However, few published data are available on the use of ACT for treatment of P. vivax malaria. Methods This study was conducted at a health centre in Kassala, eastern Sudan, from October to December 2011. Patients with uncomplicated P. vivax malaria received artemether-lumefantrine (AL) tablets (containing 20mg artemether and 120 mg lumefantrine) and were monitored for 28 days. Results Out of the 43 cases enrolled in this study, 38 completed the 28-day follow-up. Their mean age was 25.1 years (SD: 1.5). On day 3 following AL treatment, all of the patients were afebrile and aparasitaemic. By day 28, all 38 patients exhibited adequate clinical and parasitological responses to AL treatment. The cure rate was 100% and 88.4% for the per protocol analysis andfor the intention to treat analysis, respectively. Mild adverse effects (nausea, vomiting, abdominal pain, dizziness and/or rash) that resolved spontaneously were observed in four (10.5%) of the patients. Conclusion AL combination therapy was fully effective for treatment of P. vivax malaria in the study in eastern Sudan. Trial registration Trial. Gov: NCT01625871
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