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Search Results: 1 - 10 of 461890 matches for " Saeb A. Hafez "
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Cottonseed, Protein, Oil Yields and Oil Properties as Influenced by Potassium Fertilization and Foliar Application of Zinc and Phosphorus
Zakaria M. Sawan,Saeb A. Hafez,Ahmed E. Basyony,Abou-El-Ela R. Alkassas
World Journal of Agricultural Sciences , 2006,
Abstract: In maximizing the yield quantity and quality of a crop in terms of the nutritional value of fatty acids and protein, it is necessary to identify the constraints, which operate at a site and to devise methods of overcoming them through the use of inputs or changes in management practices. Field experiments were conducted during two successive seasons at the Agricultural Research Center, Giza, Egypt, on the cotton cultivar "Giza 86" (Gossypium barbadense L.) to study the effects of potassium fertilization (at 0.0 and 57.1 kg of K2O/ha) and foliar application of zinc (at 0.0 and 60 ppm of Zn, two times, 70 and 85 days after planting, "during square initiation and boll setting stage") and phosphorus (at 0.0, 600, 1200 and 1800 ppm of P2O5, two times, 80 and 95 days after planting) on cottonseed. Application of potassium and spraying plants with zinc and phosphorus caused an increase in cottonseed yield/ha, seed index, seed oil content, oil and protein yields/ha, seed oil unsaponifiable matter and total unsaturated fatty acids (oleic and linoleic). However, those treatments resulted in a decrease in oil acid value, saponification value and total saturated fatty acids. The highest P2O5-concentration of 1800 ppm gave the best values of cottonseed yield/ha, seed index and seed oil and protein yields/ha and oil saponifiable matter.
Cottonseed, Protein, Oil Yields and Oil Properties as Affected by Nitrogen Fertilization and Foliar Application of Potassium and a Plant Growth Retardant
Zakaria M. Sawan,Saeb A. Hafez,Ahmed E. Basyony,Abou-El-Ela R. Alkassas
World Journal of Agricultural Sciences , 2006,
Abstract: Field experiments were conducted in two successive seasons, at the Agricultural Research Center, Giza, Egypt. The aim was to investigate the effect of N-fertilization rate (95.2 and 142.8 kg of N/ha, applied as ammonium nitrate containing 33.5% N in two equal doses at 6 and 8 weeks after sowing), together with foliar application of potassium (applied as potassium sulfate containing 48% K2O at 0.0, 400, 800 or 1200 ppm K2O, applied twice: 70 and 95 days after sowing) and the plant growth retardant (PGR) Pix (applied twice: 75 days after sowing at 0.0 or 50 ppm and 90 days after sowing at 0.0 and 25 ppm) on seed, protein and oil yields and oil properties of Egyptian cotton cultivar "Giza 86 (Gossypium barbadense). The higher N-rate, as well as the application of potassium at different concentrations and plant growth retardant Pix resulted in an increase in cottonseed yield/ha, seed index, seed protein content, oil and protein yield/ha, seed oil refractive index, unsaponifiable matter and total unsaturated fatty acids (oleic and linoleic). Those treatments decreased, though oil acid value, saponification value and total saturated fatty acids. The seed oil content tended to decrease when the high N-rate was applied, but tended to increase with the application of potassium at different concentrations and Pix. There were some differences between potassium concentrations regarding their effects on the studied characters.
Subcutaneous emphysema of the leg: Could be a fatal condition  [PDF]
Mahmoud A. Hafez
Open Journal of Clinical Diagnostics (OJCD) , 2012, DOI: 10.4236/ojcd.2012.23012
Abstract: Gas in the leg is not always a gas gangrene. Abdominal infection with gas forming organisms may spread to the thigh & leg. We report a case of critically ill patient who presented to the emergency department with features suggestive of septic arthritis of the left hip. Assessment and further intervention revealed subcutaneous emphysema of the leg secondary to an infection of a previously asymptomatic staghorn calculus. X-ray of the abdomen showed a left renal stone and gas in the soft tissue planes of the left retroperitoneal space while X-ray of the left femur showed gas in the soft tissue planes of the left hip region and whole thigh with no bony or joint abnormality. Such case has not been reported in English literature before. Physicians and surgeons should be aware of this condition that could be fatal but curable by early intervention.
An Improved FPGA Implementation of the Modified Hybrid Hiding Encryption Algorithm (MHHEA) for Data Communication Security
Hala A. Farouk,Magdy Saeb
Computer Science , 2007,
Abstract: The hybrid hiding encryption algorithm, as its name implies, embraces concepts from both steganography and cryptography. In this exertion, an improved micro-architecture Field Programmable Gate Array (FPGA) implementation of this algorithm is presented. This design overcomes the observed limitations of a previously-designed micro-architecture. These observed limitations are: no exploitation of the possibility of parallel bit replacement, and the fact that the input plaintext was encrypted serially, which caused a dependency between the throughput and the nature of the used secret key. This dependency can be viewed by some as vulnerability in the security of the implemented micro-architecture. The proposed modified micro-architecture is constructed using five basic modules. These modules are; the message cache, the message alignment module, the key cache, the comparator, and at last the encryption module. In this work, we provide comprehensive simulation and implementation results. These are: the timing diagrams, the post-implementation timing and routing reports, and finally the floor plan. Moreover, a detailed comparison with other FPGA implementations is made available and discussed.
A Modified Formal Theory on Semi-Relativistic Effects during Electron Emission from Metallic Surfaces upon the Impact of High Energy Particles  [PDF]
S. Dhar, M. G. Hafez, A. Saha
Open Journal of Microphysics (OJM) , 2013, DOI: 10.4236/ojm.2013.34018
Abstract:

In this paper we introduce a formal theory on unveiling relativistic effects during electron emission from clean metallic surfaces upon high charged particle impact using a Jellium-type wave function including suitable spinors. In addition image charge final state electron surface interactions have been initiated in the relativistic region as well as the scattering of the projectile from the multi-center bulk potential. Finally, a semi-relativistic condition is considered in place of the ionization mechanism of scattering from an aluminium semi-infinite solid target by non-relativistic electrons to determine multiple differential cross-section.

Studies on the Effects of Turpentine Oil on the Serum Concentration of Lipids and Lipoproteins of Female Rabbits
M Saeb,S Nazifi,A Mirzaei
Journal of Shahid Sadoughi University of Medical Sciences , 2004,
Abstract: Introduction: In order to study the effects of turpentine oil on the concentration of lipids and lipoproteins of rabbit ( as an animal model for human studies )35 healthy female rabbits were chosen and then randomly allocated into 13 groups. Different percents of turpentine oil and other oil compounds like vegetable oil, cholesterol and animal oil were given to each group ( 5 rabbits ) separately or in combination. Methods: Blood serum lipid and lipoprotein levels were analysed using routine laboratory methods. Results: According to the results, treatment with 10% and 20% turpentine oil had a significant decreasing effect on triglyceride, cholesterol, total lipid, VLDL- cholesterol and LDL- cholesterol ( P<0.05 ) and a significant increasing effect on HDL- cholesterol (P0.05). Conclusion: Conclusively, results showed that treatment with turpentine oil has a significant decreasing effect on the levels of serum lipids and lipoproteins (VLDL-cholesterol and LDL- cholesterol ).
Surgical Removal of Numerous Foreign Bodies from the Foot Caused by Sea Urchin Spines  [PDF]
Mahmoud A. Hafez, Ahmed Mounir Al-Dars
Modern Plastic Surgery (MPS) , 2012, DOI: 10.4236/mps.2012.24023
Abstract: Injury from sea urchin spines is not rare, especially during summer holidays in the sea side. Failure to remove these spines or inability to remove them completely can lead to long-term squeal of pain and impaired function. Treatment methods include alternative medicine, LASER and surgery. We describe the surgical removal of 102 sea urchin spines from the foot of a 36-year-old man. The wounds healed completely. Although, he initially complained of a mild discomfort on weight bearing, the symptoms disappeared 2 weeks later.
Flax Retting Wastewater Part 1: Anaerobic Treatment by Using UASB Reactor  [PDF]
Azza I. Hafez, Maaly A. Khedr, Randa M. Osman
Natural Resources (NR) , 2012, DOI: 10.4236/nr.2012.34026
Abstract: The performance of UASB (Up-flow Anaerobic Sludge Blanket) reactor was investigated in the present study for treatment of flax retting wastewater. Batch and continuous experiments on a pilot scale were designed. The initial seed for granules (bacteria acclimation) formed earlier was from municipal sewage treatment plant with VSS of 18 - 20 g/L. Batch experiments proved that the sludge retention time (SRT) was 77 days. Under steady state conditions, continuous experiments were conducted at organic loading rates (OLRs) in the range of 1.2 to8.6 kgCODs m3·d1, where the hy- draulic retention time (HRT) decreased from 72 to 12 hrs. The results proved that the UASB technology provides good COD removal efficiency from 64.5% to 90.5% as COD loading rate decreased and good biogas production at proper food: micro-organism (F:M) ratios.
A Real Life Study on Treatment of Egyptian Patients with HCV Genotype IV with Simeprevir and Sofosbuvir  [PDF]
A. Hanno, D. Elwazzan, M. Ibrahim, R. Hafez
Health (Health) , 2016, DOI: 10.4236/health.2016.89082
Abstract: Background and Aims: Treatment with a combination of the nucleotide polymerase inhibitor sofosbuvir and NS3A (non-structural protein 3A) protease inhibitor simeprevir resulted in high rates of sustained virological response in chronic hepatitis C Genotype 4. Methods: We conducted a real life study on Egyptian patients coming to tropical medicine department clinic at El Mery main university hospital from February 2015 to February 2016 for treatment naive and treatment experienced patients with chronic HCV genotype 4, including cirrhotics and non cirrhotics. Naive (cir-rhotics and non cirrhotics) and relapsers (non cirrhotics) received nucleotide polymerase inhibitor sofosbuvir and NS3A inhibitor simeprevir once daily for 12 weeks and 24 weeks for relapser cirrhotic patients. The primary end point was a sustained virologic response at 12 weeks after end of treatment. An informed consent was obtained from each patient at the beginning of the study (Real life study: a study on Egyptian patients when the drug was available in the market). Results: 30 naive patients with HCV genotype 4 and 20 relapsers (10 non cirrhotic and 10 cirrhotic patients) were enrolled. Patient inclusion criteria: Naive patients are those who tested positive for HCV RNA by PCR and had no experience to HCV treatment; Relapsers are those who tested positive for HCV RNA by PCR and had a previous treatment for HCV. Cirrhosis was diagnosed on ultrasound basis. Mean age was 53.57 ± 10.682 years old in naive patients and 48.30 ± 5.100 years old in relapsers. Median baseline HCV RNA was 360,069 IU/mL for naive patients and 1,245,000 IU/mL for relapsers; using Fib4 20% of naive patients were F3-F4, while 40% of relapsers were F3-F4. Degree of fibrosis was confirmed by fibrotest in relapsers. Upon treatment of patients with sofosbuvir and semiprevir once daily for 12 weeks and 24 weeks only to cirrhotic relapsers, end of treatment PCR was negative in 100% in all groups including cirrhotics and non cirrhotics. Primary end point (SVR 12) was achieved in 100% of all patients. Second end point (SVR 24) was achieved in 96.6% of naive pa-ients; SVR 24 for non-cirrhotic relapsers was achieved in 100% of patients and in 90% of cirrhotic relapsers. One patient had transient total bilirubin elevations without increased ALT (alanine aminotransferase) or AST (aspartate aminotransferase). One patient developed cutaneous rash. Conclusion: Once daily sofosbuvir and simeprevir for 12 weeks provided high rate of sustained virological response among treatment naive and treatment experienced patients with HCV
Gluteal Compartment Syndrome following Vascular and Neurological Injuries
Mahmoud A. Hafez,Moustafa Radwan
Case Reports in Medicine , 2014, DOI: 10.1155/2014/869139
Abstract: Gluteal compartment syndrome is a serious but rare condition that has recently been increasingly reported in literature. This report presents two cases that followed neurological and vascular injuries (first case: an injury of the superior gluteal artery; second case: neurological injury bilaterally). A high index of suspicion and attention is needed to early diagnose this condition due to the possibility of developing serious and potentially fatal complications and difficulty in management. 1. Introduction Gluteal compartment syndrome is a serious condition that can be overlooked. Although it is a rare phenomenon, it has recently been increasingly reported in literature. This case series includes 2 case reports of life-threatening gluteal compartment syndrome due to neurological and vascular injuries. One case was due to an injury of the superior gluteal artery and the other case was due to neurological injury bilaterally, which led to 6 episodes of compartment syndrome involving buttocks, thighs, and legs that was considered life threatening too. Surgeons are not familiar with the nature of gluteal compartment syndrome following neurological or vascular injuries. A high index of suspicion is needed to early diagnose this condition, and attention should be paid for the possible serious and potentially fatal complications as well as the difficulty in management. 2. Case 1 A 24-year-old male was involved in a car accident and admitted to the general surgery department as a query abdominal injury. He was shocked with hemoglobin of 7.2?mg/dL, but clinical and radiological investigations (US and CT) showed no evidence of abdominal injury and no internal bleeding apart from retroperitoneal hematoma and tense left buttock with severe hematoma that was thought to be a contusion (Figure 1). The patient was kept under observation with a provisional diagnosis of retroperitoneal hematoma. Later, he developed sensory and motor loss in his left foot that raised the suspicion of gluteal compartment syndrome. Afterward, he was transferred from general surgery to the orthopedic department, where the patient was further examined, to find out hip swelling (firm and tender swelling). This finding, together with the sensory and motor loss, immediately urged us to take the patient to the operating theater, so fasciotomy of gluteal compartment was done. A massive bleeding happened once the fasciotomy was performed due to the loss of the tamponade effect. There was a great difficulty to control the bleeding as it originated from deep down in the pelvis. The patient lost more
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