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Prevalence of tuberculous peritonitis in the North of Iraq and sociodemographic comparison with pulmonary tuberculosis

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Asian Pacific Journal of Tropical Medicine 2009年第2期2卷 58-63页

作者： Abdulqadir Maghded Zangana Tariq S.Al-Hadithi M.Sc sherzad ali ismail Department of Surgery College of MedicineHawler Medical University ErbilIraq Department of Community and Tropical Medicine College of MedicineHawler Medical University ErbilIraq Department of Community Medicine College of MedicineHawler Medical University ErbilIraq

Objective:Tuberculosis continues to be an important health problem in the *** the widespread impression that abdominal tuberculosis is rare today,the disease is still endemic in developing world and is reemerging in the *** aim is to review our local experience with tuberculous ***:Between January 2000 and December 2006,the case records of histologically documented tuberculous peritonitis (TBP) diagnosed and treated at the tuberculosis coordinating center in Erbil city,Iraq were *** were made with pulmonary tuberculosis patients regarding socio-demographic,clinical and laboratory ***:Forty one cases of TBP were diagnosed during the study *** age range was 26-72 years(46±17),with a male:female ratio of 1.5;*** median duration of symptoms before diagnosis was 6 weeks(range;10 days to 18 months.).Eleven patients(26.8%) had comorbid conditions and 6 patients (14.6%) had a history of positive contact with Tuberculosis(TB) *** symptoms were abdominal distension(70%),abdominal pain(65%),fever(68%),anorexia(65%) and weight loss(44%).Four patients had pulmonary symptoms;cough and/ dyspnoea(n= 2 ) and cough(n= 2).Chest X-ray changes consistent with pulmonary tuberulosis(PTB) were seen in 25%.Tuberculous peritonitis was diagnosed by laparoscopy (n=29) and laparotomy(n= 12).Adverse effects of TB drugs occurred in nearly 40%,consisting of hepatitis(n= 2),nausea/vomiting(n= 11),rash(n = 2) and encephalopathy(n = 1).Hemoglobin and serum albumin levels were significantly lower in tuberculous peritonitis(TBP)TBP patients(P =0.027 and 0. 003,respectively).There was a significantly greater occurrence of adverse effects(P<0.001) in TBP patients. No significant differences between TBP and PTB were demonstrated in regard to age and sex distribution, non-specific symptoms(fever,weight loss,and anorexia) and erythrocyte sedimentation *** were treated with standard regimens and responded to treatment

关键词： Tuberculous peritonitis Pulmonary tuberculosis Laparotomy Laparoscopy Treatment outcome

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Advanced hydrogen storage of the Mg–Na–Al system:A review

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Journal of Magnesium and Alloys 2021年第4期9卷 1111-1123页

作者： N.A.ali M.ismail Energy Storage Research Group Faculty of Ocean Engineering Technology and InformaticsUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia

A solid-state storage system is the most practical option for hydrogen because it is more convenient and *** hydrides,especially MgH_(2),are the most promising materials that offer high gravimetric capacity and good ***,the practical application of MgH_(2) is restricted by slow sorption kinetics and high stability of thermodynamic *** storage performance of MgH_(2) was enhanced by introducing the Mg–Na–Al system that destabilises MgH_(2) with NaAlH_(4).The Mg–Na–Al system has superior performance compared to that of unary MgH_(2) and NaAlH_(4).To boost the performance of the Mg–Na–Al system,the ball milling method and the addition of a catalyst were *** Mg–Na–Al system resulted in a low onset decomposition temperature,superior cyclability and enhanced kinetics *** Al_(12)Mg_(17) and NaMgH_(3) that formed in situ during the dehydrogenation process modify the reaction pathway of the Mg–Na–Al system and alter the thermodynamic *** this paper,the overview of the recent progress in hydrogen storage of the Mg–Na–Al system is *** remaining challenges and future development of Mg–Na–Al system are also *** paper is the first review report on hydrogen storage properties of the Mg–Na–Al system.

关键词： Mg-Na-Al system MgH_(2) NaAlH_(4) Al_(12)Mg_(17) hydrogen storage

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Micro ball-end milling of freeform titanium parts

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Advances in Manufacturing 2015年第4期3卷 263-268页

作者： ali Mamedov ismail Lazoglu Mechanical Engineering Department Manufacturing and Automation Research Center Koc University Istanbul 34450 Turkey

Micro machining has growing number of applications in various industries such as biomedical, automotive, aerospace, micro-sensor, micro-actuator and jewelry industries. Small-sized freeform titanium parts are frequently needed in the biomedical applications, especially in the implantations such as mini-blood pumps and mini left-ventricular assist devices, finger joint replacements and small bone implants. Most of the small-sized titanium parts with freeform geometries are machined using micro ball-end milling before polishing and other surface treatments. Decreasing the cycle time of the machining parts is important for the productivity. In order to reduce the cycle time of the roughing process in the micro ball-end milling, this paper investigates the imple- mentation of a previously developed force-based feedrate scheduling （FFS） technique on micro milling of freeform titanium parts. After briefly introducing the instantaneous micro milling forces in micro ball-end milling of titanium parts with freeform surfaces, the FFS technique is implemented in the rough machining of a freeform titanium surface to demonstrate the cycle time reduction potentials via virtual micro milling simulations.

关键词： Micro milling Roughing - Feedrate scheduling - Force model - Titanium - Ti-6Al-4V

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Planning failure-censored constant-stress partially accelerated life test

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Journal of Systems Engineering and Electronics 2015年第3期26卷 644-650页

作者： ali A.ismail Abdulhakim A.Al-Babtain Department of Statistics and Operations Research College of Science King Saud University Department of Statistics Faculty of Economics & Political Science Cairo University

This article deals with the case of the failure-censored constant-stress partially accelerated life test （CSPALT） for highly reliable materials or products assuming the Pareto distribution of the second kind. The maximum likelihood （ML） method is used to estimate the parameters of the CSPALT model. The performance of ML estimators is investigated via their mean square error. Also, the average confidence interval length （IL） and the associated co- verage probability （CP） are obtained. Moreover, optimum CSPALT plans that determine the optimal proportion of the test units al- located to each stress are developed. Such optimum test plans minimize the generalized asymptotic variance （GAV） of the ML estimators of the model parameters. For illustration, Monte Carlo simulation studies are given and a real life example is provided.

关键词： reliability confidence intervals coverage probabilities,optimum test plans Type-Ⅱ censoring Monte Carlo simulation.

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N-Body Simulation Inspired by Metaheuristics Optimization

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Computer Systems Science & Engineering 2022年第6期41卷 1143-1155页

作者： Muhammad ali ismail Maria Waqas Farah Sadiq National Center in Big Data and Cloud Computing Department of Computer and Info Systems EngineeringNED University of Engineering and TechnologyKarachiPakistan

The N-body problem in classical physics, is the calculation of force ofgravitational attraction of heavenly bodies towards each other. Solving this problem for many heavenly bodies has always posed a challenge to physicists andmathematicians. Large number of bodies, huge masses, long distances and exponentially increasing number of equations of motion of the bodies have been themajor hurdles in solving this problem for large and complex galaxies. Adventof high performance computational machines have mitigated the problem to muchextent, but still for large number of bodies it consumes huge amount of resourcesand days for computation. Conventional algorithms have been able to reduce thecomputational complexity from O n2 ð Þ to O nlogn ð Þ by splitting the space into atree or mesh network, researchers are still looking for improvements. In thisresearch work we propose a novel solution to N-body problem inspired by metaheuristics algorithms. The proposed algorithm is simulated for various time periods of selected heavenly bodies and analyzed for speed and accuracy. Theresults are compared with that of conventional algorithms. The outcomes showabout 50% time saving with almost no loss in accuracy. The proposed approachbeing a metaheuristics optimization technique, attempts to find optimal solution tothe problem, searching the entire space in a unique and efficient manner in a verylimited amount of time.

关键词： N-body problem metaheuristics optimization particle swarm optimization heavenly bodies

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Beamforming techniques for massive MIMO systems in 5G:overview,classification,and trends for future research

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Frontiers of Information Technology & Electronic Engineering 2017年第6期18卷 753-772页

作者： Ehab ali Mahamod ismail Rosdiadee NORDIN Nor Fadzilah ABDULAH Department of Electrical Electronic and System EngineeringUniversiti Kebangsaan Malaysia(UKM)Bangi 43600Malaysia

Massive multiple-input multiple-output(MIMO) systems combined with beamforming antenna array technologies are expected to play a key role in next-generation wireless communication systems(5G), which will be deployed in 2020 and beyond. The main objective of this review paper is to discuss the state-of-the-art research on the most favourable types of beamforming techniques that can be deployed in massive MIMO systems and to clarify the importance of beamforming techniques in massive MIMO systems for eliminating and resolving the many technical hitches that massive MIMO system implementation faces. Classifications of optimal beamforming techniques that are used in wireless communication systems are reviewed in detail to determine which techniques are more suitable for deployment in massive MIMO systems to improve system throughput and reduce intra-and inter-cell interference. To overcome the limitations in the literature, we have suggested an optimal beamforming technique that can provide the highest performance in massive MIMO systems, satisfying the requirements of next-generation wireless communication systems.

关键词： Beamforming classifications Massive MIMO Hybrid beamforming Millimetre-wave beamforming

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Slicing-Based Enhanced Method for Privacy-Preserving in Publishing Big Data

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Computers, Materials & Continua 2022年第8期72卷 3665-3686页

作者： Mohammed BinJubier Mohd Arfian ismail Abdulghani ali Ahmed ali Safaa Sadiq Faculty of Computing Universiti Malaysia PahangKuantanPahangMalaysia School of Computer Science and Informatics De Montfort UniversityLeicesterLE19BHUnited Kingdom School of Engineering Computing and Mathematical SciencesUniversity of WolverhamptonWulfruna Street WolverhamptonWV11LYUnited Kingdom

Publishing big data and making it accessible to researchers is important for knowledge building as it helps in applying highly efficient methods to plan,conduct,and assess scientific ***,publishing and processing big data poses a privacy concern related to protecting individuals’sensitive information while maintaining the usability of the published *** anonymization methods,such as slicing and merging,have been designed as solutions to the privacy concerns for publishing big ***,the major drawback of merging and slicing is the random permutation procedure,which does not always guarantee complete protection against attribute or membership ***,merging procedures may generatemany fake tuples,leading to a loss of data utility and subsequent erroneous knowledge *** study therefore proposes a slicingbased enhanced method for privacy-preserving big data publishing while maintaining the data *** particular,the proposed method distributes the data into horizontal and vertical *** lower and upper protection levels are then used to identify the unique and identical attributes’*** unique and identical attributes are swapped to ensure the published big data is protected from disclosure *** outcome of the experiments demonstrates that the proposed method could maintain data utility and provide stronger privacy preservation.

关键词： Big data big data privacy preservation anonymization data publishing

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Fractional Analysis of Thin Film Flow of Non-Newtonian Fluid

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Computer Modeling in Engineering & Sciences 2020年第9期124卷 825-845页

作者： Farnaz ismail Mubashir Qayyum Syed Inayat ali Shah Department of Mathematics Islamia College UniversityPeshawarPakistan Department of Sciences and Humanities National University of Computer&Emerging Sciences FASTLahorePakistan

Modeling and analysis of thin film flow with respect to magneto hydro dynamical effect has been an important theme in the field of fluid dynamics,due to its vast industrial *** analysis involves studying the behavior and response of governing equations on the basis of various parameters such as thickness of the film,film surface profile,shear stress,liquid velocity,volumetric flux,vorticity,gravity,viscosity among others,along with different boundary *** this article,we extend this analysis in fractional space using a homotopy based scheme,considering the case of a Non-Newtonian Pseudo-Plastic fluid for lifting and drainage on a vertical *** applying similarity transformations,the given problems are reduced to highly non-linear and inhomogeneous ordinary differential ***,fractional differential equations are obtained using basic definitions of fractional *** Homotopy Perturbation Method(HPM),along with fractional calculus is used for obtaining approximate *** quantities such as the velocity profile,volume flux and average velocity respectively for lift and drainage cases have been *** the best of our knowledge,the given problems have not been attempted before in fractional *** and convergence of the obtained solutions are confirmed by finding residual *** a physical perspective,a comprehensive study of the effects of various parameters on the velocity profile is also *** reveals that Stokes number St,non-Newtonian parameterand magnetic parameter M have inverse relationship with fluid velocity in lifting *** the drainage case,Stokes number St and non-Newtonian parameterhave direct relationship with fluid velocity,but magnetic parameter M shows inverse relationship with *** investigation also shows that the fractional parameterhas direct relationship with the fluid velocity in lifting case,while it has inverse relationship with velocity in the

关键词： Pseudo-plastic fluid magneto hydro dynamic fractional differential equation homotopy perturbation method

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Antioxidant compounds and capacities of Gac (Momordica cochinchinensis Spreng) fruits

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Asian Pacific Journal of Tropical Biomedicine 2019年第4期9卷 158-167页

作者： ali Abdulqader Faisal ali Amin ismail Norhaizan Mohd Esa Department of Nutrition and Dietetics Faculty of Medicine and Health Sciences Universiti Putra Malaysia Biochemistry & Molecular Biology Department University Hospital Faculty of Medicine and Health Sciences Sana'a University Research Center of Excellent Non-Communicable Diseases (NNCD) Faculty of Medicine and Health Sciences Universiti Putra Malaysia Laboratory of Molecular Biomedicine Institute of Bioscience Universiti Putra Malaysia

Objective: To identify and determine the composition of antioxidant compounds, and to evaluate the antioxidant abilities of Gac fruit parts(peel, pulp, seed and aril) grown in Malaysia. Methods: LC-MS/MS was used for identification of antioxidant compounds and UV-Vis for estimation of the contents of phenolics, flavonoids, and carotenoids. Lycopene and β-carotene were quantified using high-performance liquid chromatography. DPPH(2, 2-diphenyl-1-picrylhydrazyl) and ferric reducing antioxidant power assays were employed to evaluate antioxidant capacities. Results: Phytochemicals were found amongst all the fruit parts. Notably, significant amounts of carotenoids [(107.4 ± 4.5),(85.7 ± 4.4),(110.6 ± 2.1) mg/100 g dry weight(DW)], and relatively high levels of both phenolics [(27.3 ± 1.7),(28.9 ± 2.4),(30.8 ± 2.7) mg/100 g DW] and flavonoids [(38.1 ± 2.2),(8.8 ± 1.3),(24.5 ± 3.3) mg/100 g DW] were found in the fruit's peel, pulp and aril, respectively. Seed part also showed a relatively high level of flavonoids [(18.1 ± 2.3) mg/100 g DW]. Lycopene and β-carotene were found to be significantly high(P < 0.05) in aril [(579.3 ± 22.7) and(621.0 ± 35.0) μg/g DW], followed by peel [(51.0 ± 7.5) and(210.0 ± 12.5) μg/g DW] and pulp [(37.6 ± 10.9) and(205.6 ± 22.1) μg/g DW)]. Antioxidant assays revealed that aril possessed the highest scavenging activity(IC_(50) = 865 μg/mL), while the peel possessed the highest ferric reducing power of 140 μmol FeSO4/μg. Conclusions: The current results demonstrate that Gac fruit grown in Malaysia is a rich source of phytochemicals, especially carotenoids, and possesses antioxidant activities. Thus, such findings suggest Gac fruit as a source of an antioxidant plant.

关键词： Momordica cochinchinensis Phytochemicals Carotenoids Antioxidants Polyphenols High-performance liquid chromatography

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A New Hybrid System Design for Thermal Energy Storage

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Journal of Thermal Science 2020年第5期29卷 1300-1308页

作者： CEYLA Ilhan ali ismail Hamad Guma ERGUN Alper GUREL ali Etem ACAR Bahadir iSLAM Nurse Department of Energy Systems Engineering Faculty of TechnologyKarabtik UniversityKarabik 78050Turkey Department of Mechanical and Manufacturing Engineering Faculty of TechnologyDuzce UniversityDtizce 81620Turkey

Due to some serious environmental problems like global warming and greenhouse effect,studies on solar energy systems are being conducted all over the *** studies conducted in recent years are on hybrid designs in which solar energy systems can realize both electricity and heat production at the same *** this way,both electrical energy and heat energy can be generated from the same system In this study,the design and analysis of a concentrated solar air collector with a heat storage unit were carried *** the solar air collector,heat energy was depot in paraffin wax,and the electrical energy which was stored in the battery using the PV(photovoltaic)modules in the system enabled the operation of the system *** experiments which aimed at determining system performance were carried out in winter when the ambient temperature was *** experiments were performed with or without a heat storage unit,and a comparative analysis was *** was found that the temperature of the air released from the collector ranged from 15°C to 40°C when the exterior temperature was-5°*** average efficiency of the concentrated system without the heat storage unit was calculated as 67%.The average efficiency of the concentrated system with the heat storage unit was calculated as 96%.

关键词： heat storage phase change material concentrated solar air collector

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