Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 160 )

2018 ( 203 )

2017 ( 166 )

2016 ( 205 )

Custom range...

Search Results: 1 - 10 of 9435 matches for " Rofidah Yasen Ahmed Diab "
All listed articles are free for downloading (OA Articles)
Page 1 /9435
Display every page Item
Pharmacognostical Study of the Fruit Peels of Punica granatum  [PDF]
Rofidah Yasen Ahmed Diab, Ahlam Salih Eltahir
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105687
This study deals with Punica granatum fruit peels. This plant was selected because of its popularity and being highly used; it was purchased from herbarium markets of Khartoum Sudan. The study is divided into two parts, the main part is a morph-anatomical study of the fruit peels of the plant because it is important in the identification of the medicinal plant when it is in the powder or broken forms. The preparation of permanent slides was done using wax methods. The results of the morph anatomical studies were described and shown in photomicrographs. Transverse section of the peels of the fruits of P. granatum is formed of one cell thick epidermis covered by a thin cuticle, followed by many layers of small compact parenchyma cells forming pigment layer and several cell thick isodiametric spongy parenchyma cells filling the section. Vascular bundles are small distributed within the ground parenchyma cells; sclerenchyma cells in the form of stone cells were densely distributed on the section of the peel of fruit. Part two includes physiochemical studies of the powder of the fruit peel to determine the percentage values of moisture, ash, acid insoluble ash, alcohol soluble extractives, and water soluble ash.
Groundwater Conditions and the Geoenvironmental Impacts of the Recent Development in the South Eastern Part of the Western Desert of Egypt  [PDF]
Ahmed Aziz Abdel Moneim, Sameh Zaki, Maghawri Diab
Journal of Water Resource and Protection (JWARP) , 2014, DOI: 10.4236/jwarp.2014.64040

The area to the southeast of the Western Desert of Egypt has been subjected to considerable development activities over the last few years. The development includes the cultivation of about 2260 km2 of the desert lands “the well-known Toshka Project”. The hydrogeological conditions of the area are subjected to detailed investigation based upon the construction of the water table maps, hydrologeologic cross-sections, pumping tests, aquifer geometry, and recharge-discharge relationship. The study revealed that the Quaternary and the Nubia sediments are the main water bearing layers in the area. The Quaternary aquifer is of limited potential and made of mixed sand with clay deposit ranges in thickness between 5 to 10 m. The Nubia aquifer is the oldest sedimentary formation and the main groundwater resources in the area. It is represented by multilayered of sand and silt exists generally under artesian conditions. It is composed of three water bearing horizons partially separated by two confining horizons and extends in thickness ranges between 70 and 230 meters. The thickness increases away from the high dam lake. The analysis of pumping tests of the aquifer indicated that its potentiality is increasing north of the High Dam Lake (HDL) whereas it decreases in the other direction. This is due to high hydraulic conductivity and aquifer thickness in the area northeast of Khor Toshka and at west of Garf Hussein. The hydraulic conductivity of the aquifer ranges between 12.73 and 0.9 m/day. The review of the changes in groundwater levels in the area showed that there is a drop in ranges between 1 and 14 meters in the last few years indicating that the extraction from the groundwater is much more higher that the replacement rate. Also, the analysis of the fluctuation of water levels of the HDL and the groundwater level indicated that the influence of water on groundwater level in the area is observed only at a distance less than 10 km from the lake shore line. Seepage from the HDL is estimated as 238.13 × 106 m3/year. The geo-environmental impacts of the development on the surface water and groundwater in the area are evaluated.

Outcome of Haemodialysis Arteriovenous Fistula in Baghdad, Iraq  [PDF]
Abdulsalam Y. Taha, Omer Ahmed Diab, Sabah N. Jaber
International Journal of Clinical Medicine (IJCM) , 2014, DOI: 10.4236/ijcm.2014.51003

Background: Vascular access (VA) is the life line for end stage renal disease (ESRD). Though there are many methods of VA, native arteriovenous fistula (AVF) is the oldest and the best. AVFs are prone to develop some complications. The aim of this combined prospective and retrospective clinical study was to assess the outcome of native haemodialysis AVF in Baghdad Medical City Teaching Hospital, Baghdad, Iraq. Materials and Methods: Sixty-seven patients (43 males and 24 females) with ESRD were studied over 6 months, from April 1 to September 30, 2013. Demographic and clinical features as well as co-morbidities were checked. Allen’s test and examination of upper limb superficial veins were performed. Radio-cephalic or brachio-cephalic AVFs were created mostly under local anaesthesia using artery-side to vein-end anastamoses. Complications were noted during a follow-up period of 2 weeks to 6 months. Results: The mean age was 51.2 ± 14.4 years. Fistulas (n = 81) were mostly brachio-cephalic (n = 74, 91.4%). One fifth of patients were diabetics and 58.2% were hypertensive. End of the vein to side of the artery was used in 92.5%. All fistulae functioned primarily. Significant complications were thrombosis (n = 18, 22.2%), aneurysms (n = 3, 4.5%) and steal syndrome (n = 3, 13.6%). Distal oedema, venous congestion, wound infection and seroma were managed conservatively. Three surgical revisions were required, one for a large aneurysmal dilation (aneurysmectomy and vessel ligation) and two for an evacuation of seroma. Conclusion: AVF initial success was good. Late complications such as aneurysms and steal syndrome were almost within the reported rates whilst thrombosis was high.

Impact of Pre-Radiotherapy and/or Chemoradiotherapy Hemoglobin Level on Response to Treatment in Laryngeal and Hypophayrngeal Squamous Cell Carcinoma  [PDF]
Dina Ragab Diab Ibrahim, Mohamed Saad Hasaballah, Marwa Mohamed El-Begermy, Ahmed Abdel Aziz Ahmed, Soha Ahmed Abuelela
Journal of Cancer Therapy (JCT) , 2018, DOI: 10.4236/jct.2018.94033
Abstract: Background: Anemia is reported by many studies as an important risk factor for poor locoregional disease control and survival in head and neck carcinoma. We aimed to study the frequency and prognostic effect of low hemoglobin (Hb) level in head and neck squamous cell carcinoma (HNSCC) before radiotherapy (RT) and/or chemoradiotherapy (CRT). Material and Methods: We retrospectively studied the charts of 86 patients diagnosed with laryngeal and hypopharyngeal SCC in a university hospital in Cairo, Egypt. Based on the World Health Organization (WHO), anemia was diagnosed in males at Hb levels < 13 g/dl and <12 g/dl in females. We examined the Hb levels before radiotherapy alone or combined with chemotherapy and its impact on re-sponse to treatment and survival. Results: The median age was 56 years. 75/86 (87.2%) patients were males with performance status1 in 73/86 (84.9%) patients. The median Hb level was 13.1 g/dl. The pre-RT/CRT Hb level in female patients (n = 11) was <12g/dl in 4/11 (36.4%) and >12 g/dl in 7/11 (63.6%) patients. Pre-RT/CRT Hb level in male patients was <13 g/dl in 31/75 (41.3%) and >13 g/dl in 44/75 (58.7%). Tumor sites were larynx in 77 (89.5%) and hypopharynx in 9 (10.5%) patients. Disease stage 3, 4 was common in 59/86 (68.6%) patients. Thirty-six (41.8%) patients had surgery. 13/86 (15.1%) patients received induction chemotherapy, while 31/86 (36.0%) had concomitant chemoradiotherapy. Radiotherapy was given in 65/86 (75.58%) patients. The mean RT dose was 66 Gy. Non-anemic patients had significant higher inci-dence of complete response (CR) to treatment (p = 0.034). 25.8% of male pa-tients with Hb < 13 g/dl had higher incidence of recurrence (p = 0.036) com-pared to recurrence in 39.5% of male patients with Hb > 13 g/dl (p = 0.403). Female patients whether anemic or non-anemic had no recurrence (p = 0.036 and p = 0.403 respectively). The median duration of DFS and OS was 6.52 and 9.33 months respectively. Pretreatment Hb level had statistical significant effect on response to treatment and overall survival, but not disease free survival. Conclusion: Nutritional anemia is common in developing countries. Our results support the positive prognostic effect of Hb level > 12 g/dl and >13 g/dl before radiation therapy and/or chemoradiotherapy on response to treatment and overall survival but not the disease free survival.
Bionomics of ticks collected from the Sinai Peninsula, Egypt. I. Biology of Hyalomma schulzei (Olenev) (Acari: Ixodidae) under laboratory conditions
Ahmed Shoukry, Gamal A El-Kady, Fathi M Diab
Egyptian Journal of Biology , 2000,
Abstract: Egyptian Journal of Biology Vol.2 2000: 49-56
The Sources of Stock Market Volatility in Jordan
Ahmed Diab Al-Raimony,Hasan Mohammed El-Nader
International Journal of Economics and Finance , 2012, DOI: 10.5539/ijef.v4n11p108
Abstract: This study examines the sources of the Amman Stock Exchange (ASE) price index volatility, using monthly data between 1991 and 2010. The volatility returns of the ASE are estimated through utilizing the ARCH /GARCH model with /without dummy variable, and to measure the shocks of each variable, the Impulse Response Function (IRFs) is applied. The results of the study revealed that the ARCH (1) performs well. It also indicated that RMS2, CPI, E1, WAIR and the dummy variable have an adverse impact on the ASE returns volatility, while RGDP played a positive effect. The volatility equation shows that the mean () is smaller than that of the parameter of lagged squared error term (). ARCH (1) (represented by) is positive and statistically significant at 1% level, while GARCH (1, 1), represented by, is negative with the dummy variable but not statistically significant. The sum of ( +) is greater than unity, demonstrating that the volatility increases over time. The dummy variable () has an inverse influence on the ASE index returns volatility and is statistically significant at 1%. The results from the (IRFs) support the significance of dynamic association between the monthly return index and the macroeconomic variables. The findings of this study can assist policy makers in curbing the outflows of financial capital, investors in assessing the asset returns predictability during the financial crisis, financial regulators, business executives, and stock market analysts.
Designing a Visual Inspection System for Quality Characteristics Dimensions
Safaa L. Diab,Abedl Halim Bassiuny,Mohammed Hussein,Reham Ahmed
Mechanical Engineering Research , 2011, DOI: 10.5539/mer.v1n1p12
Abstract: Industrial inspection is one of the crucial tasks to ensure quality conformance of products. The inspection tasks can be done by using several methods like non-scaled go/not go gauging, measuring instruments, or advanced non-touching tools. In this research visual inspection using a developed optical system is conducted. One of the aims of this research is to design an on line visual inspection system that is capable to test geometrical quality characteristics of 2-D machined products. The design process includes developing an economical optical system to acquire inspected product’s images. Image processing tools are utilized to deal with the product image; and extract features of its geometrical characteristics. A neural network-based methodology is developed and applied to decide whether the product conforms to pre-specified tolerances. The results of the developed methodology are compared to some statistics based visual approaches from the literature. The results show the goodness of the system as an automated visual inspection system and prove its superior performance with respect to other methods.
Concomitant H1N1 encephalopathy and acute ischemic stroke: A case report  [PDF]
Elzbieta Wirkowski, Jay Yasen, Christopher Bondoc
World Journal of Cardiovascular Diseases (WJCD) , 2012, DOI: 10.4236/wjcd.2012.22016
Abstract: Neurological complications of infection by the novel H1N1 virus have been described primarily in children. In adults, patients typically present with fever and respiratory symptoms, and may develop acute respi-ratory distress syndrome, sepsis and stroke. We present a 45-year-old man whose presentation of aphasia and right hemiplegia were incongruent with the findings on MRI of a small acute ischemic stroke. He rapidly developed multi-organ failure and died. Nasal swab PCR obtained prior to death returned positive for influenza virus A/H1N1. At autopsy, a small acute hemorrhagic infarction in the left parietal lobe was present. We suspect that this was a car-dio-embolic stroke, probably triggered by H1N1 myocarditis.
Enhanced Control of Power System by Using Smart Grid and Possibility of Applying it in Iraq
Mohammed Hammed Yasen
International Journal of Soft Computing & Engineering , 2013,
Abstract: the best control of power system very important for High quality energy. And the smart grid technology so need for Solve more problem about stability in electrical power system. In This paper present one problem in Iraqi electrical system it is unstable problem in electrical power system. And this problem Effected to control of power system and this problem effect to Economic of Iraq because more time happened the total shut Down in Iraqi electrical system. So by using Smart grid will do Enhance to control of power system. And check if can be Applicability the smart grid in Iraq.
A Novel Method to Extract Rocks from Mars Images
Shuliang Wang,Yasen Chen
Computer Science , 2014, DOI: 10.1049/cje.2015.07.003
Abstract: In this paper, a novel method is proposed to extract rocks from Martian surface images by using 8 data field. It models the interaction between two pixels of an image in the context of imagery 9 characteristics. First, foreground rocks are differed from background information by binarizing 10 image on roughly partitioned images. Second, foreground rocks are grouped into clusters by 11 locating the centers and edges of clusters in data field via hierarchical grids. Third, the target 12 rocks are discovered for the Mars Exploration Rover (MER) to keep healthy paths. The 13 experiment with images taken by MER shows the proposed method is practical and potential.
Page 1 /9435
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.