Al-Mayahie S.M.G.,University of Wasit
Infectious Diseases in Obstetrics and Gynecology | Year: 2013
Vaginal (61) and fecal (61) Escherichia coli isolates from pregnant and nonpregnant women (18-45 years old) were surveyed for papG alleles by PCR technique. papG allele II was the most prevalent among both vaginal (32.7%) and fecal (3.2%) isolates, whereas other alleles were found only among vaginal isolates (1.6% for alleles I and III and 3.2% for alleles II + III). papG + pregnant women's isolates did not differ significantly from those of nonpregnant in possession of papG allele II (90% versus 73.3%), whereas both (32.7%) differed significantly (P≤0.05) in comparison with fecal isolates (3.2%). The vast majority of papG allele II+ vaginal isolates were clustered in group B2 (81.8%) and much less in group D (18.1%). Also, most of them were positive for fimH (100%), papC (100%), iucC (90.9%), and hly (72.7%), and about half of them were positive for sfa/foc (45.4%). In addition, the mean of VFs' gene possession was 3.5 (range from 2 to 5). It can be concluded that vaginal colonization by papG allele II+ E. coli is possibly one of the predisposing factors of both pregnant and nonpregnant women to pyelonephritis, but its potential may be modified by other factors especially host factors. © 2013 Sareaa Maseer Gatya Al-Mayahie.
Hussanan A.,University of Technology Malaysia |
Ismail Z.,University of Technology Malaysia |
Khan I.,Majmaah University |
Hussein A.G.,University of Wasit |
Shafie S.,University of Technology Malaysia
European Physical Journal Plus | Year: 2014
In this article, the unsteady boundary layer magnetohydrodynamic (MHD) free convection flow past an oscillating vertical plate embedded in a porous medium with constant mass diffusion and Newtonian heating condition is analysed. By considering the effects of thermal radiation in the energy equation, the problem is first modeled and then written in dimensionless form, which is then solved by using the Laplace transform technique. The expressions for velocity, temperature and concentration fields are obtained and plotted graphically to see the influence of embedded parameters. The results for skin friction, Nusselt number and Sherwood number are also shown in tables. Further a table is included for the comparison of our results with those present in the literature. © Società Italiana di Fisica/Springer-Verlag 2014.
Al-Defae A.H.,University of Dundee |
Al-Defae A.H.,University of Wasit |
Knappett J.A.,University of Dundee
Journal of Geotechnical and Geoenvironmental Engineering | Year: 2014
An extensive program of centrifuge testing was conducted to quantify the improvements to seismic slope performance that can be achieved by installing a row of discretely spaced vertical precast RC piles. A key novelty of the work presented is the use of recently developed microreinforced concrete to produce realistically damageable model piles. Pile-reinforced slopes are a good example of a problem in which relative soil-pile strength is important in determining whether the soil or pile yields first, and in which the performance of a slope with structurally damaged piles may be of interest. The new model RC allows these factors to be properly accounted for in a reduced-scale physical model for the first time. Two different reinforcement layouts were considered, representing (1) a section specifically detailed to carry the bending moments induced by the slipping soil mass, and (2) a nominally reinforced section with low moment capacity. These were supported by further tests on conventional elastic piles that were instrumented to measure seismic soil-pile interaction. It was demonstrated that dynamic ground motions at the crest can be significantly reduced in amplitude by up to 20% with elastic piles spaced at s/B=3.5, both in terms of the peak acceleration and across the full response spectrum. Permanent deformations at the slope crest (e.g., settlement) were also reduced by up to 35% at s/B=3:5. These findings are consistent with previous suggestions made for the optimal s/B ratio for encouraging soil arching between piles at maximum spacing both under monotonic conditions and from numerical investigations of the seismic problem. The improvements to slope performance were reduced slightly using the designed microreinforced concrete piles owing to deterioration in the bending properties arising from fatigue under the cyclic kinematic loading. This suggests that idealization of RC piles as elastic elements will likely be only an approximation of their true behavior. The importance of reinforcement detailing was also highlighted, with the nominally reinforced section yielding early in the earthquake, and the damaged piles subsequently only offering a small (although measureable) reduction in seismic slope performance compared with the unreinforced case. In addition to these findings, the data presented will be useful in validating future improved numerical models for predicting the performance of piled slopes and for the aseismic design of pile-reinforcing schemes. © 2014 American Society of Civil Engineers.
Ismail Z.Z.,University of Baghdad |
Jaeel A.J.,University of Wasit
The Scientific World Journal | Year: 2013
Microbial fuel cells (MFCs) have the potential to simultaneously treat wastewater for reuse and to generate electricity. This study mainly considers the performance of an upflow dual-chambered MFC continuously fueled with actual domestic wastewater and alternatively biocatalyzed with aerobic activated sludge and strain of Bacillus Subtilis. The behavior of MFCs during initial biofilm growth and characterization of anodic biofilm were studied. After 45 days of continuous operation, the biofilms on the anodic electrode were well developed. The performance of MFCs was mainly evaluated in terms of COD reductions and electrical power output. Results revealed that the COD removal efficiency was 84% and 90% and the stabilized power outputs were clearly observed achieving a maximum value of 120 and 270 mW/m2 obtained for MFCs inoculated with mixed cultures and Bacillus Subtilis strain, respectively. © 2013 Zainab Z. Ismail and Ali Jwied Jaeel.
Sadiq A.K.,University of Wasit
International Journal of Applied Engineering Research | Year: 2014
The white-rot basidomycete, Trametes versicolor was tested for the decolourisation ability of treated wool scour effluent. Isolates HR131 and HR 154 were tested with HR 131 displaying a slight superiority. Inocula from both liquid and solid formulations were tested but no difference on decolourisation was observed. Killed fungi controls displayed 6 - 11% colour removal. The maximum additional biological colour removal achieved for undiluted, treated effluent was 44% by T. versicolor isolate HR131 after 48 h by two sequential inoculations of mycelia grown in malt extract broth sucrose liquid formulation. The rate of biological colour removal on a dry mycelia weight basis was 0. 274% (g L-1)-1 h-1 ± 0. 032 (□= 0. 025, R2 = 0. 97). No manganese peroxidase and low laccase levels were detected. Colour reversion was noted after initial decolourisation, which was thought to be linked to low co-substrate levels. © Research India Publications.