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Search Results: 1 - 10 of 117010 matches for " Mohammed O. Mohammed "
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Correlation of Endoscopic Findings with Various Helicobacter pylori Tests among Dyspeptic Patients  [PDF]
Mohammed O. Mohammed
International Journal of Clinical Medicine (IJCM) , 2014, DOI: 10.4236/ijcm.2014.519151
Abstract: Background: Helicobacter pylori is the most common chronic bacterial infection, and a significant etiological factor in acid peptic diseases and gastric cancer. Dyspepsia is a common gastrointestinal disorder, and the most common indication for gastroscopy. Detection of H. pylori during endoscopy has become standard clinical practice. Elevated levels of inflammatory markers such as C-reactive protein (CRP), are associated with pathological changes, and hence give useful information for exact diagnosis and therapy. Objectives: To determine the relationship between endoscopic findings, highly sensitive C-reactive protein level (hs-CRP) and H. pylori infection among dyspeptic patients using serological tests, stool antigen for H. pylori and antral histology. Methods: This was a prospective study; patients with dyspepsia, who referred to Kurdistan Teaching Center of Gastroenterology & Hepatology in Sulaimani City were assessed, during the period of December 2012 to March 2014. They underwent gastroscopy, and biopsies were taken from the corpus and antral portions of antral portion for histopathological exam. Patients’ serum samples were tested for H. pylori infection using ELISA method to detect (IgG & IgA) anti-bodies and stool samples were examined using rapid immunoassay method to detect H. pylori antigens. hs-CRP was assessed using ELISA. Results: One hundred dyspeptic patients were included in the study. The mean age was 34.2 years and male comprised 54% of the study samples. The common findings in oesophagogastroduodenoscopy (OGD) examination were antral gastropathy (59%) and duodenal ulcer (21%). A statistically significant (P < 0.01) correlation was found between hs-CRP and H. pylori IgG and IgA levels (titer). There was a highly significant (P < 0.01) correlation between the level of H. pylori IgG and the endoscopic findings. The highest serum level of H. pylori IgG was found in duodenal ulcer and antral gastritis, (88.86 ± 42.0) and (70.05 ± 35.2) Au/ml, respectively. There was a highly significant correlation (P < 0.01) between endoscopic findings and H. pylori positive antral biopsy, in duodenal ulcer, antral gastritis and duodenitis was 100%, 94.9% and 75% respectively. Also duodenal ulcer and antral gastritis showed high mean and percentage but no significant differences in both H. pylori IgA and stool Antigen.
Assessment of heavy metal contamination in vegetables consumed in Zanzibars  [PDF]
Najat K. Mohammed, Fatma O. Khamis
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.48078
Abstract: Samples of amaranth and cabbage from Zanzibar were analyzed for heavy metal concentrations using Energy Dispersive X-ray Fluorescence spectrometry (EDXRF) of Tanzania Atomic Energy Commission (TAEC) in Arusha. Thirty samples of amaranth and twenty five samples of cabbage were collected from four farms and two markets at Urban West Region in Zanzibar. The concentrations of Al, Cl, Cr, Mn, Fe, Ni, Zn, Cu, Ag, I, Br, Cd and Pb are presented and discussed. Amaranth had significant (P < 0.05) higher concentrations of Zn, Fe, Cr and Mn than cabbage, whilst Cd, Ni and Pb were significantly (P < 0.05) higher in cabbage than amaranth. Although the mean concentrations of the essential elements were in the range reported in literature, Pb and Cd were in concentrations above FAO/ WHO maximum tolerable limits.
Depositional Facies and Sequence Stratigraphic Study in Parts of Benin (Dahomey) Basin SW Nigeria: Implications on the Re-Interpretation of Tertiary Sedimentary Successions  [PDF]
Solomon O. Olabode, Muraina Z. Mohammed
International Journal of Geosciences (IJG) , 2016, DOI: 10.4236/ijg.2016.72017
Abstract: Detailed fieldwork in parts of the Benin (Dahomey) Basin SW, Nigeria has allowed the recognition of sedimentary successions deposited in different continental depositional environments interpreted as fluvial sedimentation characterised by abandoned channels and subaerial exposure features. The lithofacies recognisedare:conglomerates, debris flow deposits, very coarse grained sandstone, ferruginous cross bedded sandstone, siltstone, shale/clay and massive sand. The lithofacies wereinterpreted in terms of sequence stratigraphic elements with the recognition of sequence boundaries characterised by distinct facies dislocations and subaerial exposures. Four depositional sequences (DS I to DS IV) were identified. Depositional sequences (DS I) exhibited a complete regressive–transgressive cycle comprising LST, TST and HST, while DS II to DS IVwereincomplete comprising of sediments interpreted as LST deposits. On the basis of the depositional facies andsequence stratigraphic elements, the sediments in the area of study are interpreted as predominantly ofIlaro Formation while fewer exposures are sediments of the Coastal Plain Sands/Benin Formation. This observation suggests a re-interpretation of the Tertiary sedimentary successions, which hitherto recognised all the sediments in the area of study as Coastal Plain Sands.
Effect of negative permittivity and permeability on the transmission of electromagnetic waves through a structure containing left-handed material  [PDF]
Muin F. Ubeid, Mohammed M. Shabat, Mohammed O. Sid-Ahmed
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.34043
Abstract: We investigate the characteristics of electromagnetic wave reflection and transmission by multilayered structures consisting of a pair of left-handed material (LHM) and dielectric slabs inserted between two semi-infinite dielectric media. The theoretical aspect is based on Maxwell's equations and matching the boundary conditions for the electric and magnetic fields of the incident waves at each layer interface. We calculate the reflected and transmitted powers of the multilayered structure taking into account the widths of the slabs and the frequency dependence of permittivity and permeability of the LHM. The obtained results satisfy the law of conservation of energy. We show that if the semi-infinite dielectric media have the same refractive index and the slabs have the same width, then the reflected (and transmitted) powers can be minimized (and maximized) and the powers-frequency curves show no ripple. On the other hand if the semi-infinite dielectric media have different values of refractive indices and the slabs have different widths, then under certain conditions the situation of minimum and maximum values of the mentioned powers will be reversed.
Impact of Helicobacter pylori Infection on Serum Lipid Profile and Atherosclerosis of Carotid Artery  [PDF]
Hadeel A. Ibrahim, Mohammed O. Mohammed, Hawa A. R. Dhahir, Kawa A. Mahmood, Bryar E. Nuradeen
International Journal of Clinical Medicine (IJCM) , 2014, DOI: 10.4236/ijcm.2014.515125

Background: Helicobacter pylori (H. pylori) infection has been suggested to be associated with atherosclerosis. The issue is still controversial. It is well known that abnormal lipid profile is related to atherosclerosis and measurement of carotid intima-media thickness. Aim of the study: to investigate carotid intima-media thickness and lipid parameters in H. pylori-positive and -negative subjects. Materials & Methods: This study was conducted in Kurdistan Teaching center of Gastroenterology and Hepatology (KCGH) in Sulaimani city during the period of December 2012 to March 2014. One hundred dyspeptic patients with H. pylori infection and 74 apparently healthy asymptomatic volunteers with H. pylori-negative tests were enrolled in this study. Both groups were comparable in age distribution and gender. H. pylori infection (IgG & IgA) were assessed by ELISA tests, Triglyceride, total cholesterol, low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) concentrations were measured by routine enzymatic methods using commercial kits. Carotid intima-media thickness was assessed by high-resolution ultrasound. Results: The mean and maximum values of internal and common carotid intima-media thickness in H. pylori-positive subjects were significantly thicker than in H.

Congenital Heart Diseases Diagnosed on Transthoracic Echocardiography: Perspectives from the University of Maiduguri Teaching Hospital, Nigeria  [PDF]
Faruk Buba, Mohammed A. Talle, Charles O. Anjorin, Mohammed M. Baba, Bello A. Ibrahim
World Journal of Cardiovascular Surgery (WJCS) , 2017, DOI: 10.4236/wjcs.2017.74007
Abstract: In a retrospective study of 1224 transthoracic echocardiograms performed between January 2011 and December 2013, we evaluated the spectrum of congenital heart disease (CHD) diagnosed at a tertiary referral centre in Maiduguri, north-eastern Nigeria. Diagnosis of CHD was made in 88 (8.3%) subjects, comprising 23 (26.1%) adults and 65 (73.9%) aged less than 18 years. Forty six (52.3%) of those with CHD were females, while 42 (47.7%) were males. The frequencies of the CHD in decreasing order were: ventricular septal defect 23 (26.1%), tetralogy of Fallot (TOF) 14 (15.9%) and atrial septal defect (ASD) and atrioventricular septal defect (AVSD) were 11 (12.5%) each. One of the patients with AVSD had Ellis Van Creveldt syndrome. Six (6.8%) cases of patent ductus arteriosus (PDA) were diagnosed in those younger than 18 years, while all the 5 (5.7%) cases of Ebstein’s anomaly were diagnosed in adults. There were 6 (6.8%) cases of Eisenmenger syndrome involving three cases of AVSD, one case of ASD and two cases of Ebstein’s anomaly. Timely definitive cares for these patients are still lacking in Nigeria and many areas of sub-Saharan Africa. We recommend sensitization of all relevant clinicians to actively look for congenital heart defects. Pulse oximetry and postnatal echocardiographic new-born screening which were previously validated should be implemented at secondary and tertiary levels, and efforts should be made towards providing the needed care for patients with CHD.
Development of Analytical Method for the Detection of Nemacur Residues in Cucumber Fruits  [PDF]
Said Al-Kurdi, Mohammed O. Alloh, Mohammed R. Al-Agha, Yasser El-Nahhal
American Journal of Analytical Chemistry (AJAC) , 2018, DOI: 10.4236/ajac.2018.91006
Abstract: Application of Nemacur (Fenamiphos) for pest control may contaminate soil, water and plant with harmful residues and pose threats to human life. This study developed an easy method for the determination of Nemacur residues in cucumber fruits collected from the central markets and from the farm. The method is based on extracting the active ingredients of Nemacur from the commercial formulation and used as a standard material to calibrate the HPLC to determine Nemacur residues in cucumber fruits collected from the central market. Results showed that more than 70% of the active ingredient was extracted from the commercial formulations. Standardization of HPLC with extracted materials showed strong positive association between concentration and peak area relationship. Bioassay investigation showed high mortality of tested organism (fish). Statistical analysis of mortality % between the commercial formulation and those of the extracted ingredient showed no significant differences. These results demonstrated the effectiveness of extracted Nemacur to calibrate HPLC and in bioassay test. Nemacur residues in Cucumber fruits collected from the market were below the detection limit of HPLC, recovery % of Nemacur from control group of cucumber was above 80%. It can be concluded that the method is easily developed and validated by bioassay and chemo-assay.
Nonhomogeneous elliptic equations with decaying cylindrical potential and critical exponent
Mohammed Bouchekif,Mohammed E. O. El Mokhtar
Electronic Journal of Differential Equations , 2011,
Abstract: We prove the existence and multiplicity of solutions for a nonhomogeneous elliptic equation involving decaying cylindrical potential and critical exponent.
Juvenile idiopathic arthritis and the temporomandibular joint
Y Mohammed, O Saeed
Alexandria Journal of Medicine , 2012,
Abstract: Background: The temporomandibular joint (TMJ) is one of the most underdiagnosed and undertreated conditions of juvenile idiopathic arthritis (JIA) because its involvement is often asymptomatic and the joint is difficult to examine. Objectives: The aim of this study was to investigate clinical as well as magnetic resonance imaging findings of temporomandibular joint inflammation among juvenile idiopathic arthritis patients and to detect the correlation between them, moreover with different disease parameters. Methods: Forty patients with JIA and 10 apparently healthy control subjects underwent clinical and post contrast magnetic resonance imaging (MRI) examinations for TMJs. MRI findings were scored. Clinical and laboratory disease parameters were recorded. Results: The clinical symptoms and signs of TMJ arthritis were detected in 35% and 62.5% of JIA cases, respectively. While TMJ disease was observed in 80% of patients using contrast enhanced MRI. The mean total MRI score was significantly higher in patients with active disease compared to those without activity. Patients with systemic and polyarticular JIA showed significant increase in the mean of synovial enhancement, effusion and total MRI scores compared to those with the oligoarticular type. MRI abnormalities revealed significant association with clinical signs of TMJ examination but not with symptoms. Synovial enhancement score showed significant positive correlation with disease activity score and C-reactive protein as a marker of inflammation. A significant positive correlation was found between total MRI score and disease activity, functional and pain scores in patients with JIA. Conclusions: TMJ arthritis is common among patients with JIA, therefore; examination of the TMJ is mandatory during the follow up of patients. Clinical signs of TMJ arthritis can be used as filter for MRI examination TMJ is an important joint which may be considered during categorizing JIA patients in different subtypes.
Generalized PIC Detector for Distributed STBC under Quasi-Synchronization  [PDF]
Mohammed Taha O. El Astal, Ammar M. Abu-Hudrouss
Wireless Engineering and Technology (WET) , 2012, DOI: 10.4236/wet.2012.31004
Abstract: In this paper, we propose a Generalized Parallel Interference Cancelation (G-PIC) approach for the detection of D-STBC under Quasi-Synchronization in the case of any number of relay nodes with just statistical information about time misalignment. While as, most researches assume perfect synchronization between the relay nodes for the detection of D-STBC which is hard to achieve. This approach proved to be very effective to mitigate the degradation in the system performance due to the imperfect synchronization. The numerical simulations, for the proposed approach, showed that in just three iterations we can achieve performance close to the D-STBC with perfect synchronization.
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