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Medicine, Iraq

Raftari M.,University Putra Malaysia | Azizi Jalilian F.,University Putra Malaysia | Abdulamir A.S.,University Putra Malaysia | Abdulamir A.S.,Alnahrain University | And 4 more authors.
African Journal of Microbiology Research | Year: 2011

Varied mixtures of different concentrations 1, 1.5 and 2% of acetic (AA), lactic (LA), propionic (PA) and formic (FA) acids at 1:1 ratio were spray-washed on inoculated meat to evaluate their efficacy in reducing loads of Escherichia coli O157:H7 and Staphylococcus aureus on meat tissue. It was found that increasing the concentration of the used organic acids increased the bacterial lethality proportionally. And significant difference (P<0.05) was observed in the lethal effect of different mixtures and concentrations of the used organic acids. As a novel combination, FA treatments as combinations with AA, LA, and PA, especially FA with LA, reduced bacterial loads greatly, up to 3 logs cfu/ml and eradicated inoculated bacteria, E. coli O157:H7 and S. aureus completely within 3-6 days. This reduction was higher than that incurred by other combinations. Significantly, higher log reductions by the used organic acids were obtained for S. aureus than for E. coli O157:H7. It was concluded that the combination of LA and FA treatment was a highly promising, feasible, and economical method of decontaminating meat surface from both E. coli O157:H7 and S. aureus bacteria. Moreover, it is safe if compared with other approaches. © 2011 Academic Journals. Source

Al-Zwainy F.M.S.,Alnahrain University | Mohammed I.A.,University of Technology, Iraq | Raheem S.H.,University of Technology, Iraq
International Journal of Applied Engineering Research | Year: 2016

The aim of this study is investigation the impact of the application of project management methodologies in Iraqi construction sector. The importance of this study as new add for the fields of knowledge, it can be benefit for researchers in academic field and engineers in the practical field. The questionnaire form was designed by following a simple method, because the questionnaire as an important source of acquiring field information and data. The Iraqi Ministry of Construction and Housing and Public Municipalities was selected as a study population. Questionnaire content three axes. The first axis: (Personal data and information), The second axis:(assess the application of Project Management Methodology in Iraqi construction sector), and The third axis: (The reasons for the lack of application of international methodologies in the Iraqi project management), one of important of result this study is the main reason for the absence of a project management methodology in the company is lack of conviction and lack of interest of top management in project management methodology. Twenty five variables or reasons which effect on the PMM are presented. The highest ranked factor variables for factors influencing is V19 with relative importance (RI) of 77% first (1st), V1 was ranked second (2nd) with RI of 75%, V20was ranked third (3rd) with RI of 72% and others variables have relative importance from 60-69% (Very Important). © Research India Publications. Source

Bakar F.A.,University Putra Malaysia | Abdulamir A.S.,University Putra Malaysia | Abdulamir A.S.,Alnahrain University | Nordin N.,University Putra Malaysia | Yoke T.S.,University Putra Malaysia
Biotechnology | Year: 2010

Lactobacillus sp. is probiotic bacteria for which many detection methods were envisaged. However, culture-based methods failed to achieve specific detection of this bacterium due to its presence in mixed bacterial complex communities. The PCR assay was optimized to detect and quantify Lactobacillus sp. specifically in complex microbial community of mixed bacteria. Four DNA extraction methods, DNA integrity, primers specificity and optimized PCR procedure were all tested. It was shown that extracted genomic DNA using Wizard® Genomic DNA Purification Kit showed the highest yield, quality and performance in gel electrophoresis. Moreover, the specificity of the primer set, Lacto-16S-F/Lacto-16S-R, specific for Lactobacillus sp. was checked and found highly specific. In conclusion, the best DNA extraction protocol, working specific primer set and working PCR assay were achieved for achieving efficient, specific and reliable molecular-based, culture-independent, method of detection of lactobacillus sp. in PCR-suppressor highly protein-complex environment of mixed bacteria community. © 2010 Asian Network for Scientific Information. Source

Abdulamir A.S.,University Putra Malaysia | Abdulamir A.S.,Alnahrain University | Hafidh R.R.,University Putra Malaysia | Hafidh R.R.,University of Baghdad | Abu Bakar F.,University Putra Malaysia
Cancer Therapy | Year: 2013

This review aims at discussing the role of Salmonella bacteria as anti-cancer agent against solid and semi-solid tumors. In addition, Salmonella bacteria have been used as a successful bacterial vector for cytotoxic moieties, apoptotic inducers, prodrug enzymes, cytokines, chemokines, tumor associated antigens, DNA and RNA antisense or vaccine fragments. The best strain found as anticancer agent was S. Typhimurium this is due to its low pathogenicity and high tolerability in animals and humans. S. Typhimurium has been thoroughly researched in the last three decades. Genetically modified and attenuated S. Typhimurium has been designed as direct tumoricidal agent or as a vector for additional anticancer agents. Hence, in this review, we discuss the role of bacteria, in general, as anticancer agent, the tumoricidal activity of Salmonella used in monotherapy, the homing and specificity of Salmonella to tumor cells rather than normal cells, the role of Salmonella as a vector for different anticancer and oncolytic agents, and the use of this bacteria in cancer immunotherapy. Source

Jweeg M.J.,Alnahrain University | Hammood A.S.,University of Kufa | Al-Waily M.,University of Kufa
International Journal of Mechanical and Mechatronics Engineering | Year: 2012

The existence of a defect like a crack will leads to change in natural frequency of the plate and enlargement of the crack will also lead another change in natural frequency with the change of the size or position of the crack. So this study focuses on finding the natural frequency for isotropic composite plates with crack considering the size of the crack (crack length and depth through plate thickness) an crack position in the plate in x, y directions, also slant of the crack. The natural frequency is studied for composite material strengthen by powder, and short fibers with the effect of crack size and position, plate thickness, aspect ratio, the type of plate fixing where three type of fixing used (SSSS, SSCC, SSFF). Two methods are used to find the natural frequency of composite plate: First method is supposed analytical solution to solve the equation of motion considering the effect of size, and position crack on the natural frequency of the composite plate. Second method is finite element solution using ANSYS (ver. 14) program. A comparison made between the two methods and the error percentage is not exceeds of 3.5%. The results shows that the natural frequency decreases as crack size (length or width) increases. The natural frequency decreases when the crack in the middle of the plate over any position of the crack. The effect of crack when it reaches the middle is higher than when it's in the other places. The natural frequency is decreases as plate width increases, (aspect ratio and plate thickness). © October 2012. Source

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