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Search Results: 1 - 10 of 463577 matches for " Saleh A. Khaled "
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Effect of Watering Regime on Yield and its Components of Triticum aestivum var. el-phateah L.
Saleh A. Khaled
American Journal of Plant Physiology , 2010,
Abstract: In this study, the effects of watering regime on yield, some metabolic products as well as its components of Triticum aestivum var. el-phateah in two successive seasons (2004/2005) were conducted. Moreover, the addition of Halax 2 bio-fertilizers concentration was also followed. In spite of decreasing in dry weight and water contents of wheat plant by increasing field capacity, the % of germination was significantly increased (75% field capacity). Upon increasing the water regime; also the photosynthetic efficiency, root elongation, chlorophyll b as well as protein contents were raised. The addition of bio-fertilizer to wheat plants under water regime significantly enhanced shoot elongation, chlorophyll a as well as photosynthetic assimilation.
The Traveling Wave Solutions for Some Nonlinear PDEs in Mathematical Physics  [PDF]
Khaled A. Gepreel, Saleh Omran, Sayed K. Elagan
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.23040
Abstract: In the present article, we construct the exact traveling wave solutions of some nonlinear PDEs in the mathematical physics via (1 + 1) dimensional Kaup Kupershmit equation, the (1 + 1) dimensional seventh order KdV equation and (1 + 1) dimensional Kersten-Krasil Shchik equations by using the modified truncated expansion method. New exact solutions of these equations are found.
One Stage Anterior Reconstruction and Posterior Instrumentation in Surgical Management of Thoracolumbar Spine Fractures  [PDF]
Khaled Omran, Hesham Ali, Ahmed Saleh, Ahmed Omar, Ibrahim Elhawery, Ali Zein A. A. Alkhooly
Open Journal of Orthopedics (OJO) , 2015, DOI: 10.4236/ojo.2015.51002
Abstract: Background: The different methods of anterior reconstruction and posterior instrumentation in surgical management of thoracolumbar spine fractures are PLIF, TLIF, lateral extracaviatary and transpedicular techniques which are increasingly used to perform partial or total corpectomies and anterior reconstructions from a posterior approach. These techniques were being alternative to the standard anterior approach with less morbidity and mortality. Patients and Methods: This study was performed between 2011 and 2014 on 100 patients with acute unstable thoracolumbar spine fractures which were divided into four groups: 30 patients underwent (TLIF), 28 patients underwent (PLIF), 28 patients underwent (PA) and 14 patients underwent (TPA). Neurological outcome, complications, operative times, kyphotic angle, vertebral height loss, spinal canal compromise, pulmonary functions, Denis pain and work scale, VAS score, ODI score, hospital stay, and estimated blood loss (EBL) were evaluated and compared in between the four groups. Results: There was a higher complication rate, increased EBL, and longer operative time with posteroanterior (PA) compared with PLIF, TLIF and (TPA). Patients undergoing PLIF, TLIF and TPA had a greater recovery of neurological function than those in whom PA were performed. Conclusion: TPA appeared to have more favorable results in improving the clinical and radiological outcome and no complications were reported apart from superficial wound infection which healed rapidly. The PLIF, TLIF and TPA appeared to have a comparable morbidity rate to PA. The different methods of anterior reconstruction from posterior approach are more favorable, applicable and convenient than PA approach.
Measurement of the Ambient and Extremity Doses in Clinical Oncology Hospital, Menoufia University, Egypt  [PDF]
I. A. El-Mesady, G.M. Saleh, N. E. Khaled, A. A. Hussein, H. M. El-Samman, Kh. K. Abd-Al Aziz
International Journal of Medical Physics,Clinical Engineering and Radiation Oncology (IJMPCERO) , 2018, DOI: 10.4236/ijmpcero.2018.72021
Abstract: The ambient dose of radiation therapy and nuclear medicine units of Clinical Oncology Hospital, Menoufia University were investigated using thermoluminescence dosimeter MTS-700 and surveymeter (Inspector Radiation Alert). The maximum% difference between read out of both MTS-700 (TLD) and surveymeter did not exceed 6% and 8% for the two hospital units respectively. Values of the annual ambient dose received in both hospital units were found to be incompliant with radiation protection regulations. In addition, the extremity effective dose Hp (0.07) of staff in nuclear medicine unit was measured using wrist and finger techniques. Results indicate in-homogenies distribution of fingertips doses. Radiation doses received by the wrists and fingertips of radiopharmaceutical staff preparing 99mTc syringe were observed to be higher by a factor of about 1.41 and 1.44 respectively than those for the administrating staff whom injecting patients by 99mTc syringe, but also still in congruent with
Efficacy and safety of non-penetrating deep sclerectomy surgery in Saudi patients with uncontrolled open angle glaucoma
Saleh A. Al-Obeidan,Ahmed Mousa,Abid Naseem,Khaled K. Abu-Amero
Saudi Medical Journal , 2013,
Abstract: Objectives: To investigate the efficacy and safety of deep sclerectomy (DS) in Saudi patients with primary and secondary open-angle glaucoma (OAG). Methods: In this retrospective cohort study, a total of 194 eyes of 152 patients with OAG were consecutively enrolled to undergo DS with Mitomycin-C (MMC) at King Abdulaziz University Hospital, Jeddah, Kingdom of Saudi Arabia between January 2002 and September 2010. Age at surgery, gender, type of glaucoma, operated eye, previous ocular surgery, type of implant, pre and final visit visual acuities, intraocular pressure (IOP), number of anti-glaucoma medications, optic nerve cup/disc ratio, and complications were recorded. Results: Cases were followed up to a mean of 60.9 (±49.7) months. The IOP reduced from a preoperative mean of 25.6 (±10.3) to final visit of 13.5 (±4), whereas the mean number of anti-glaucoma medication also reduced from 2.95 (±0.93) to 0.22 (±0.63), which was statistically significant (p<0.0001). Complete success was 82%, while overall success was 90.2%. Patients <50 years (p=0.003), high IOP (≥21) at baseline (p=0.039), and being exposed to previous surgeries (p=0.047) were significant risk factors for failure, while combining cataract and converting to penetrating surgery have significantly improved the success rate (p=0.037). Conclusions: Deep sclerectomy provides significant IOP reduction with low rate of visual threatening complications in Saudi patients with open angle glaucoma.
Effect of Notch Severity on Fatigue Behaviour of ADI Castings  [PDF]
Khaled M. Ibrahim, Bakkar El-Sarnagawy, Ibrahim I. Saleh
Materials Sciences and Applications (MSA) , 2013, DOI: 10.4236/msa.2013.42012
Abstract:

An investigation was carried out to examine the influence of notch sensitivity on fatigue behaviour of austempered ductile iron (ADI). Samples were made of ductile iron with a chemical composition of 3.55% C, 2.18% Si, 0.35% Mn, 0.022 P, 0.008 S and 0.045% Mg. The samples were heat treated by austenitizing at 900 for 1 h and then rapidly quenched into two different salt baths at 350 and 400 for 1 h each. This work aims at studying the capability of mechanical stress analysis software (ANSYS 12.0), as a nondestructive tool, to characterize and quantify the fatigue strength of the notched ADI samples with different radii (from 1 to 3 mm). In addition, experimental testing was performed using rotary bending fatigue machine on notched samples with radii of 1, 1.5 and 2-mm to verify the theoretical data obtained by ANSYS-12. The results show that the predicted fatigue strength estimated by ANSYS-12 is very close to the experimental one. Therefore, fatigue performance of the rotating parts made of ADI can be estimated theoreticcally using ANSYS 12.0. The fatigue strength of these parts can also be improved by increasing the formed filled radius due to decreasing the notch sensitivity factor.

A Survey of SQL Injection Attack Detection and Prevention  [PDF]
Khaled Elshazly, Yasser Fouad, Mohamed Saleh, Adel Sewisy
Journal of Computer and Communications (JCC) , 2014, DOI: 10.4236/jcc.2014.28001
Abstract:

Structured Query Language Injection Attack (SQLIA) is the most exposed to attack on the Internet. From this attack, the attacker can take control of the database therefore be able to interpolate the data from the database server for the website. Hence, the big challenge became to secure such website against attack via the Internet. We have presented different types of attack methods and prevention techniques of SQLIA which were used to aid the design and implementation of our model. In the paper, work is separated into two parts. The first aims to put SQLIA into perspective by outlining some of the materials and researches that have already been completed. The section suggesting methods of mitigating SQLIA aims to clarify some misconceptions about SQLIA prevention and provides some useful tips to software developers and database administrators. The second details the creation of a filtering proxy server used to prevent a SQL injection attack and analyses the performance impact of the filtering process on web application.

Isolation and Identification of Lactic Acid Bacteria with Antifungal Activity Against Anthracnose Disease
Asma Saleh W. El-Mabrok,Zaiton Hassan,Ahmed Mahir Mokhtar,Khaled M.A. Hussain,Mohamed Mustafa Aween
Research Journal of Biological Sciences , 2012, DOI: 10.3923/rjbsci.2012.335.339
Abstract: The objective of this study was isolation, identification of lactic acid bacteria from different source and testing their antifungal activity against phytopathogens fungi C. capsici and C. gloeosporioides. The isolates were identified by their phenotypic and genotypic characteristics and their antifungal activity was performed by the overlay method. Seven LAB isolates were showed good antifungal activity against phytopathogens fungi and were grew at different temperatures, pH and NaCl. However, C5 and G7 have the ability to inhibit the growth of both target phytopathogens fungi compared to other isolates. C5 and G7 identified by API 50CHL kit as Lactobacillus plantarum and the identified by used 16S rDNA was Lactobacillus plantarum C5 and L. pentosus G7. This is the first study that observed LAB isolates L. plantarum C5 and L. pentosus G7 inhibited both of C. capsici and C. gloesporeioides in vitro. This study demonstrates that the LAB L. plantarum C5 and L. pentosus G7 have potential to be used as biological control of this phytopathogen by inhibiting the mycelia growth.
Enhancement of Heat Transfer Using Pins Swimming in Non-isothermal Fluidic Systems: Exact Solutions  [PDF]
Abdul Rahim A. Khaled
Journal of Electronics Cooling and Thermal Control (JECTC) , 2011, DOI: 10.4236/jectc.2011.11001
Abstract: Heat transfer to pins swimming in non-isothermal fluidic systems is theoretically analyzed. Four different cases are considered: [A] pins aligned longitudinally in flowing fluid having constant temperature gradient, [B] pins aligned transversely in flowing fluid flow with constant temperature gradient, [C] pins moving longitudinally towards a heated surface, and [D] pins moving transversely towards the heated surface. The Appropriate unsteady energy transport equations are solved and closed form solutions for the fin temperatures are obtained. Accordingly, different performance indicators are calculated. It is found that heat transfer to the swimming fin increases as the fin thermal length, Peclet number and fluid temperature difference along the fin length increase. It decreases as fluid temperature index along the motion direction increases. Moreover, the swimming pins of case C are found to produce the maximum system effective thermal conductivity. In addition, pins of case B with thermal lengths above 11 produce system thermal conductivity independent on the thermal length. Meanwhile, pins of case A having thermal lengths above 10 produce system thermal conductivities less responsive to the thermal length. The system thermal conductivity is noticed to increase as the thermal length and Peclet number increase. Eventually, pins of case D produce system thermal conductivities that are independent on the transverse temperature. Finally, the results of this work provide a basis for modeling super convective fluidic systems that can be used in cooling of electronic components.
The Equation of State of Nuclear Matter and Neutron Stars Properties  [PDF]
Khaled S. A. Hassaneen
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.516171
Abstract: The equation of state (EOS) of symmetric nuclear and pure neutron matter has been investigated extensively by adopting the non-relativistic Brueckner-Hartree-Fock (BHF). For more comparison, the extended BHF approaches using the self-consistent Green’s function approach or by including a three-body force will be done. The EOS will be studied for different approaches at zero temperature. We can calculate the total mass and radius of neutron stars using various equations of state. A comparison with relativistic BHF calculations will be done. Relativistic effects are known to be important at high densities, giving an increased repulsion. This leads to a stiffer EOS compared to the EOS derived with a non-relativistic approach.
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