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Search Results: 1 - 10 of 1315 matches for " Wael Salah "
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A Proposed Mesh Placement for Repair of Ventral Hernia and Contouring of the Abdomen  [PDF]
Adel Tolba, Wael Shelfa, Hazem Nour, Hessen Yaser, Mansour Salah
Surgical Science (SS) , 2015, DOI: 10.4236/ss.2015.610064
Abstract: Introduction: Abdominal wall defects and muscle redundancy in the form of protruded abdomen still represent a challenging problem. The aim of this article is to reconstruct the abdominal wall and regain the abdominal contour through the application of biosynthetic meshes in certain fashion. Patients and Methods: this is a prospective study done 25 patients with long standing ventral hernia and lax abdominal muscle wall. All patients were performed at Zagazig university hospitals in the period between September 2011 and November 2013. Polypropylene mesh is used for every patient after anatomical hernia repair for hernioplasty and then shaping like outstretched hand (fingers processes). The aim is to reinforce the abdominal wall and reshape the abdomen. Results: regarding to the aesthetic aspect and success rate of the abdominal wall reconstruction, we have a good satisfactory results without recurrence in a period of 2 years follow up. Three patients are suffered from wound infection and partial edge ischemia in two patients. Bleeding and delayed wound healing in ten patients and persistent seroma are occurred in fife patients. Conclusion: It is safe with a good patient satisfaction to combine ventral hernia repair and abdominoplasty in cases with excess skin and musculofascial laxity of the abdominal wall (pendulous abdomen) with application of this finger processes mesh, after following the proper technique and precautions.
The Use of Multi Sources Data for Mapping of Sensitive Areas to Hydrous Erosion in the Mountains of Tessala (Northern Algeria)
Salah Eddine Bachir Bouiadjra,Wael El Zerey
International Journal of Environment , 2014, DOI: 10.3126/ije.v3i3.11092
Abstract: The Tessala mountains constitute a fragile ecosystem, they are confronted with several problems with knowing loss of the farmed lands, bad distribution and occupation of the soil, low organic matter, rough and unstable soil (the slope exceeds in some places the 25%). To understand the problem of hydrous erosion in the Tessala mountains, a model of approach using geographic information system was proposed. Geographic data were processed by mapping using specialized software. After treatment, we identified the areas where the susceptibility to erosion is significant. Over 80% of the land of our study area is susceptible to hydrous erosion at different degrees highly sensitive (32.5%), moderately sensitive (44%) insensitive (15%) and stability (7.5%). DOI: http://dx.doi.org/10.3126/ije.v3i3.11092 International Journal of Environment Vol.3(3) 2014: 321-331
étude diachronique des changements du couvert végétal dans un écosystème montagneux par télédétection spatiale : cas des monts du Tessala (Algérie occidentale)
Salah Eddine Bachir Bouiadjra,Wael El Zerey,Khéloufi Benabdeli
Physio-Géo , 2011, DOI: 10.4000/physio-geo.2048
Abstract: Une meilleure compréhension de l'évolution des modes d'utilisation des sols et du couvert végétal est une préoccupation majeure pour les pays dont les écosystèmes subissent des dégradations sévères. En effet, les dynamiques d'occupation des sols ont des implications directes sur la disponibilité des ressources naturelles. Notre étude menée sur les monts du Tessala en Algérie occidentale, en utilisant l'indice de végétation par différence normalisée (NDVI), met en évidence l'ampleur des changements du couvert végétal entre 1987 à 2007. Une évolution régressive prononcée du couvert végétal est constatée au sud-est et au nord-ouest des monts du Tessala, tout particulièrement dans la "forêt de Tessala", sur les communes d'A n-Thrid, Tessala et Sehala. Les principaux facteurs contribuant à la régression du couvert végétal sont : la déforestation (plus de 26 délits de coupe par an), le surpaturage (420 délits de paturage illicite par an), les incendies de forêts (plus de 20 incendies par an) et l'érosion hydrique qui en résulte (environ 72 % des superficies sont concernées). A better understanding of the changing patterns of land use and land cover, is a major concern for countries where ecosystems are being severely degraded. Indeed, the dynamic feature of land use has important implications on natural resources. Our study conducted on the Tessala mountains, by using Normalized Difference Vegetation Index (NDVI), put in evidence the importance of changes in vegetation cover between 1987 and 2007. A pronounced regressive evolution is observed in south-east and north-west of the Tessala mountains, especially in the "forest of Tessala", in the communes of A n-Thrid, Tessala and Sehala. The main factors of environmental degradation, are : deforestation (over 26 offenses cut every year), overgrazing (420 crimes of illegal grazing every year), forest fires (more than 20 fires every year) and resultant erosion (more than 72 % of the area is concerned and mainly in the south-east).
Development of TEC System for Commercial Cooling Applications
Wael Salah,Soib Taib,Anwar Al-Mofleh
Modern Applied Science , 2009, DOI: 10.5539/mas.v3n4p203
Abstract: This paper represents the possibility of using the TEC-Thermo Electric Coolers in cooling applications. Such application with small area away connected is possible with the use solar energy as power source. Factors affecting the performance of TE will discussed also. The effect of Heat Sink Extender (HSE) for TEC assembling will be considered. TEC performance is tested for different modules. The assembling for best performance of TEC and the supply requirements using PV as a power source is presented for potential commercialization.
Prospective of Energy Efficiency Practice, Indicator and Power Supplies Efficiency
Anwar Al-Mofleh,Soib Taib,Wael Salah,Mokhzaini Azizan
Modern Applied Science , 2009, DOI: 10.5539/mas.v3n5p158
Abstract: Energy efficiency generates substantial financial savings while at the same time improving environmental, business, home, and transport benefit. The efficiency of energy use will lead to a reduction in national energy consumption, as well as by improving energy efficiency the cost of using energy can be kept low and not blown out of proportion. The concept of energy efficiency will be in the interest of both customers and manufacturers because of its financial advantages. Energy-efficiency standards and labels can be the most effective long-term energy-efficiency policy any government can implement. Improving energy efficiency of power supply is one of the most cost-effective and feasible option to meet the energy efficiency practices.
One stage bilateral endoscopic sympathectomy under local anesthesia: Is a valid, and safe procedure for treatment of palmer hyperhidrosis?
Awad Mohamed,Elzeftawy Awny,Mansour Salah,Elshelfa Wael
Journal of Minimal Access Surgery , 2010,
Abstract: Objective : Thoracoscopic sympathetic surgery is currently the best treatment for hyperhidrosis, and the success rate is quite high, but poor emphasis has been given to the type of anaesthesia and its application through either one or two stages of surgery. This study has evaluated the operative and postoperative results of one-stage bilateral thoracoscopic sympathectomy under local anaesthesia. Materials and Methods : From 2003 to 2007, n=14 patients with hyperhidrosis of the upper limbs [4 females and 10 males] with a mean age of 28±2.11 year [range 26-44] were included. They were operated on by means of bilateral ETS under local anaesthesia. The mean follow-up was 1.5 years (range 13-24 months). Results : No operative mortality was recorded. The mean operating room time for the whole bilateral procedure under was 73. 5±14.5 range [60 -120] min most of the patients were discharged the same day after a chest roentgenogram except, only two patients with gustatory sweating one recurrent sweating in the patient who had previously axillary hyperhidrosis. Also among them two patients (20%) experienced a minimal pneumothorax that required no treatment. Postoperative quality of life and satisfaction were excellent and cost was significantly reduced. Conclusions : Bilateral thoracoscopic sympathectomy for palmar hyperhidrosis could be safely and effectively performed in patients refusing GA regarding cost and satisfaction.
Cognitive Skill Transfer in English Reading Acquisition: Alphabetic and Logographic Languages Compared  [PDF]
Wael Shakkour
Open Journal of Modern Linguistics (OJML) , 2014, DOI: 10.4236/ojml.2014.44048
Abstract: The purpose of this article is to review published studies regarding acquisition of English as a second or foreign language by students of different linguistic backgrounds, in light of the English language’s opaque alphabetic orthography. This review focuses on the contribution of first language cognitive skills (orthographic knowledge, phonological awareness, and morphological awareness) in native speakers of languages with alphabetic and logographic orthographies, to English second-language reading skills (word reading and reading comprehension), to better understand the contribution of cognitive reading skills in alphabetic and logographic languages to the acquisition of English reading skills as a second language. The author examines findings in the context of second-language learning theories, and two contradictory hypotheses in particular—the linguistic interdependence hypothesis and the script-dependent hypothesis. The author finds that no consensus can be indicated as to the contribution of most native-language skills in alphabetic vs. logographic languages to the acquisition of second-language or foreign-language English reading, or even whether or not they are language-specific (script-dependent). The exception is phonological awareness in alphabetical orthographies (but not logographic orthographies) which received a consensus among researchers supporting its transfer from the native language to English as a second or foreign language.
Serum anti-P53 antibodies and alpha-fetoprotein in patients with non-B non-C hepatocellular carcinoma
Abdel Raouf Abou El Azm, Mohamed Yousef, Raafat Salah, Wael Mayah, Salwa Tawfeek, Hussien Ghorabah and Nagwa Mansour
SpringerPlus , 2013, DOI: 10.1186/2193-1801-2-69
Abstract: Non-B non-C HCC showed high serum prevalence of anti-p53 as viral-associated HCC suggesting an evidence of high onchogenecity. It appears of much benefit in diagnosis, follow up and differentiation from cirrhosis in presence of low levels of alpha-fetoprotein.
Evaluation of the Ultimate Capacity of Friction Piles  [PDF]
Wael N. Abd Elsamee
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.411100
Abstract: The precise prediction of maximum load carrying capacity of bored piles is a complex problem because the load is a function of a large number of factors. These factors include method of boring, method of concreting, quality of concrete, expertise of the construction staff, the ground conditions and the pile geometry. To ascertain the field performance and estimate load carrying capacities of piles, in-situ pile load tests are conducted. Due to practical and time constraints, it is not possible to load the pile up-to failure. In this study, field pile load test data is analyzed to estimate the ultimate load for friction piles. The analysis is based on three pile load test results. The tests are conducted at the site of The Cultural and Recreational Complex project in Port Said, Egypt. Three pile load tests are performed on bored piles of 900 mm diameter and 50 m length. Geotechnical investigations at the site are carried out to a maximum depth of 60 m. Ultimate capacities of piles are determined according to different methods including Egyptian Code of practice (2005), Tan-gent-tangent, Hansen (1963), Chin (1970), Ahmed and Pise (1997) and Decourt (1999). It was concluded that approxi- mately 8% of the ultimate load is resisted by bearing at the base of the pile, and that up to 92% of the load is resisted by friction along the shaft. Based on a comparison of pile capacity predictions using different method, recommendations are made. A new method is proposed to calculate the ultimate capacity of the pile from pile load test data. The ultimate capacity of the bored piles predicted using the proposed method appears to be reliable and compares well to different available methods.
An Experimental Study on the Effect of Foundation Depth, Size and Shape on Subgrade Reaction of Cohessionless Soil  [PDF]
Wael N. Abd Elsamee
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510095
Abstract:

The modulus of subgrade reaction ks depends on several factors such as the size and shape of the foundation as well as the embedment depth of the foundation. The present study is an experimental analysis using plate load test to determine the effect of foundation depth, size as well as the shape on the modulus of subgrade reaction (ks) of cohesionless soils. It was carried out by using nine rigid steel plates with different sizes and shapes (circular, square and retangular). The tests were carried out on cohessionless soil with different relative densities under different applied pressures. The settlement has been measured at the surface of the plate for different depths of footings. The ultimate bearing capacity [qu] has been determined from the stress-settlement relationships. The allowable bearing capacity (qa) was determined by dividing the ultimate bearing capacity (qu) by F.S. = 3.0, after which the corresponding settlement (Sa) has been obtained. However, ks was calculated based on dividing the allowable bearing capacity (qa) by the corresponding settlement (Sa). From the present study it is concluded that the subgrade reaction ks of cohessionless soil increases with increasing foundation depth as well as foundation size. In addition, subgrade reaction ks of cohessionless soil under rectangular footing is higher than that under square and that under circular one with same equivalent area. An empirical formula is presented to calculate the subgrade reaction ks of cohessionless soil under square foundation taking into consideration foundation depth. Fair agreement has been obtained between values of ks from the empirical formula at depth of footing = 0.00 B and Biot (1937) as well as Meyerhof and Baike (1965).

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