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Search Results: 1 - 10 of 167717 matches for " Ghada E. Hamoda "
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APO-1/FAS Promoter (-670A/G) Polymorphisms and Risk of Lupus Nephritis in SLE Egyptian Female Patients  [PDF]
Eman A. E. Badr, Ghada E. Hamoda, Heba A. Esaily, Mohamed A. Korany
Open Journal of Genetics (OJGen) , 2015, DOI: 10.4236/ojgen.2015.52007
Abstract: Background: Self-immunization in systemic lupus is driven by defective in apoptosis. Fas, is an apoptosis-promoting cell surface receptor. The present study evaluate the possible association between APO-1/FAS Promoter (-670A/G) Polymorphism and sFAS level with susceptibility to lupus nephritis in SLE patients. Design and Methods: This study was performed on 88 female patients with SLE (mean age, 39.82 ± 10.16 years). 82 patients with lupus nephritis (mean age, 42.50 ± 6.65 years). 150 age and sex-matched person served as controls. All participants were genotyped for the APO-1/FAS Promoter (-670A/G) Polymorphism, manifestations and serum sFAS were correlated with the genotypes. Results: Serum sFAS was significantly higher in patients with -670 AA genotype compared to others. (-670A/G) AA genotype frequencies were significantly higher in the lupus nephritis and SLE patients groups compared with the controls and were associated with increased risk for lupus nephritis and SLE development (odds ratio, 4.08 and 1.91 respectively). Conclusions: The APO-1/FAS Promoter (-670A/G) A allele can be used as a genetic marker for lupus nephritis susceptibility in SLE and was associated with high sFAS level.
Computational Aspects of Electromagnetic Fields near H.V. Transmission Lines  [PDF]
Ossama E. GOUDA, Ghada M. AMER, Waleed A. SALEM
Energy and Power Engineering (EPE) , 2009, DOI: 10.4236/epe.2009.12010
Abstract: Biological effects of electromagnetic fields on the human body, animals and plants have been a subject of scientific interest and public concern for their risk on the living organisms such as blood leukemia and others. The high voltage transmission and distribution lines, which pass beside some houses, factories and schools are source of electromagnetic fields. This paper presents the field calculations around and near of high voltage transmission lines 220 kV and 500kV. To calculate the induced current, the power density, the electric field and the magnetic field of grounded and ungrounded human body cylindrical model are used. MATLAB program package is used for mathematical calculation of the distribution of the EMF in human body under high voltage power transmission lines.
Modeling Of Construction Noise For Environmental Impact Assessment
Mohamed F. Hamoda
Journal of Construction in Developing Countries , 2008,
Abstract: This study measured the noise levels generated at different construction sites in reference to the stage of construction and the equipment used, and examined the methods to predict such noise in order to assess the environmental impact of noise. It included 33 construction sites in Kuwait and used artificial neural networks (ANNs) for the prediction of noise. A back-propagation neural network (BPNN) model was compared with a general regression neural network (GRNN) model. The results obtained indicated that the mean equivalent noise level was 78.7 dBA which exceeds the threshold limit. The GRNN model was superior to the BPNN model in its accuracy of predicting construction noise due to its ability to train quickly on sparse data sets. Over 93% of the predictions were within 5% of the observed values. The mean absolute error between the predicted and observed data was only 2 dBA. The ANN modeling proved to be a useful technique for noise predictions required in the assessment of environmental impact of construction activities.
Development and Assessment of Quality Control Phantom for Linearity and Uniformity  [PDF]
Mohamed E. M. Gar-Elnabi, Wadah M. Ali, Mohammed A. Ali Omer, Adam K. Sam, Ghada A. Edam
Open Journal of Radiology (OJRad) , 2015, DOI: 10.4236/ojrad.2015.52010
Abstract: Abstract: The aim of this study was to develop a cheap, locally made and friendly applicable phantom for gamma camera quality control and to test its validity relative to standard results (intrinsic and extrinsic spatial linearity and intrinsic and extrinsic uniformity) of gamma camera SPECT. And the significance of this experimental study was to introduce a multi-purpose phantom for gamma camera which could overcome the risk accompanied by quality control test procedure such as detector crystal damage and the appearance of moiré patterns. The results of the developed phantom showed an average count difference of 0.7% relative to the standard phantom and about 4% in X- to Y-axis directions relative to the standard phantom. Also, the measured absolute linearity was 0.63 mm in X direction and 0.64 mm in Y direction for the UFOV compare with 0.70 mm value of acceptance test. And the I.U. and D.U. of the developed phantom were 3.18% and 2.27% respectively for the UFOV relative to the standard phantom I.U. and D.U. (2.0% and 1.5%) for the UFOV respectively.
Radio Wave Propagation Characteristics in FMCW Radar  [PDF]
Ghada M. SAMI
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2009, DOI: 10.4236/jemaa.2009.14042
Abstract: FMCW Radar (Frequency Modulated Continuous Wave Radar) is used for various purposes, such as atmospheric Remote Sensing, inter-vehicle ranging, etc. FMCW radar systems are usually very compact, relatively cheap in purchase as well as in daily use, and consume little power. In this paper, FMCW radar determines a target range by measuring the beat frequency between a transmitted signal and the received signal from the target, and Combines between PO and radar single. The approach based on frequency domain physical optics for the scattering estimation and the linear system modeling for the estimation of time domain response, and FMCW Radar signal processing.
Time-Domain Analysis of a Rectangular Reflector Antenna  [PDF]
Ghada M. Sami
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.410172
Abstract:

Rectangular reflector antennas have motivated the time-domain analysis of electromagnetic scattering problems. The asymptotic time domain physical-optics (TDPO) is applied to the analysis of a rectangular reflector illuminated by a Gaussian-impulse. The effects of time-delayed mutual coupling between points on the surface will be ignored as a result of utilizing the TDPO method for determining the equivalent surface-current density on the reflector. Finally, in this work the scattered signals at the specular reflection point, at the edges, and at the corners can be clearly distinguished.

Vascularity of a breast lump  [PDF]
Ghada M. Mansour
Open Journal of Obstetrics and Gynecology (OJOG) , 2013, DOI: 10.4236/ojog.2013.39120
Abstract:

The aim of this study was to find if Doppler ultrasound of the axillary and lateral thoracic arteries in breast cancer cases would differ from benign breast lesions and normal controls. Two hundred patients with breast lumps were included in the study. Clinical examination, mammography, breast ultrasound and fine needle aspiration or tru-cut biopsies were done for all cases. Breast ultrasound included morphological criteria of lump, lateral thoracic artery (LTA) Doppler, axillary lymph nodes, and axillary artery Doppler. All malignant cases had undergone mastectomy or lumpectomy. Lump size ranged from 1 to 5.1 (2.93 ± 1.6) cm. Eighty one cases were diagnosed as breast cancer and one hundred and nineteen cases were benign conditions. There was no significant difference regarding axillary artery and lump Doppler between the two groups while there was a difference of LTA Doppler with a cut off value of 0.67. Lateral thoracic artery resistance index measured by Doppler ultrasound was significantly lower in the malignant group in this study with a cut off value of 0.67.

The Influence of Infants’ Characteristics on Breastfeeding Attitudes among Jordanian Mothers  [PDF]
Ghada Mohammad Abu Shosha
Open Journal of Nursing (OJN) , 2015, DOI: 10.4236/ojn.2015.54032
Abstract: Background: Breastfeeding is the desired nutritional method for infants. Some infants’ characteristics were found influential to mothers’ point of views toward breastfeeding. However, the relationship between infants’ characteristics and mothers’ attitudes toward breastfeeding is still uncertain. The aim of this study was to assess infants’ characteristics and their impact on Jordanian mothers’ attitudes toward breastfeeding. Methods: A descriptive cross-sectional design was used. A sample of 130 mothers was selected conveniently from mothers attending four major governmental maternal-child health centers at Zarqa city in Jordan. The Iowa Infant Feeding Attitude Scale along with infants’ characteristics data sheet were used for data collection. Results: A more positive attitude toward breastfeeding was manifest (mean 63.5, SD: 4.67). Positive attitudes toward breastfeeding were higher among women who delivered normally than women who delivered by cesarean section (p = 0.040). In addition, women who had healthy infants were more likely to have positive attitudes toward breastfeeding compared to women with ill infants (p = 0.021). However, women with preterm deliveries were less likely to have positive attitudes compared to women with full-term deliveries (p = 0.013). Likewise, women whose infants admitted to neonatal intensive care unit recorded less positive attitudes toward breastfeeding than women with healthy neonates (p = 0.043). Gestational age, admission to neonatal intensive care unit, infant’s health status, and type of delivery, were factors influencing mothers’ attitudes towards breastfeeding. Conclusions: Jordanian mothers have positive attitudes toward breastfeeding. However, positive attitudes are subject to different infants’ characteristics that should be considered while undertaking heath education programs for promoting breastfeeding. More focusing is recommended for women who delivered preterm infants, women who have ill infants, and women who delivered by cesarean section.
Keep on Striving: The Impact of Psychosocial Support on Jordanian Adolescents with Cancer  [PDF]
Ghada Mohammad Abu Shosha
Health (Health) , 2016, DOI: 10.4236/health.2016.810095
Abstract: Having cancer during adolescence stage causes stressors in patients’ lives. They are responsible for dealing with many new situations and stressors. Coping with such stressors can be influenced by psychosocial factors. This study aimed to explore the impact of psychosocial support on adolescents with cancer. A qualitative exploratory design was used to understand the experience of psychosocial support from the perspectives of the patients. Twenty adolescents with cancer were selected purposefully from two major cancer treatment centers in Jordan. Semi-structured face-to-face interviews were used to obtain the participants’ perspectives. Data were analyzed using thematic analysis approach. Findings revealed three major themes: “supportive structure”, “precious aspects of psychosocial support”, and “cancer could be defeated”. Participants expressed their satisfaction with the psychosocial support provided to them. However, they asked for further improvement in hospital facilities, playrooms and leisure activities. In conclusion, having a strong psychosocial support system will help adolescents to cope with cancer. Family, friends, and the surrounding environment are the key elements in installing hope and helping adolescents to go through cancer experience. Nurses are advised to adopt these psychosocial keys in order to create age-related activities that would improve the patients’ coping with cancer.
Beliefs of Jordanian Children with Thalassemia toward Using Iron Chelation Therapy  [PDF]
Ghada Mohammad Abu Shosha
Open Journal of Blood Diseases (OJBD) , 2016, DOI: 10.4236/ojbd.2016.63005
Abstract: Adherence to thalassemia treatment including chelation drugs is influenced by numerous factors. This study aims to explore beliefs about iron chelation therapy and adherence to this medication in Jordanian children with thalassemia major. In this descriptive cross-sectional study, seventy three patients were selected conveniently to complete the study instruments. Participants reported high adherence to their chelation therapy (88.1%). The majority (87.6%) expressed necessity for chelation therapy. However, 42.18% of the participants expressed their concerns about the therapy in which 57.9% of them showed concerns about dependency on medicine and 46.4% of them revealed concerns about the long-term effect of medicine. Overall, about 12.9% of the participants recorded correct and complete answers about thalassemia and its treatment. Knowledge about thalassemia and concerns about chelation were not significantly associated with adherence to the chelation therapy (r = 0.32, p = 0.19; r = 0.29, p = 0.25, respectively). However, there was a significant positive relationship between beliefs about the necessity of the therapy and adherence to it (r = 0.38, p = 0.03). In conclusion, Jordanian children showed proper adherence to their chelation therapy. Health care professionals should discuss patients’ concerns about chelation therapy which might increase patients’ adherence to their therapy.
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