Fady elsayed bibliography examples
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Assessment of anti streptolysin O titre in healthy school age children in Menoufia governorate
Abstract
Objectives To assess the upper limit of normal values of antistreptolysin O titer (ASOT) in healthy school-age children in Menoufia governorate. Background Acute rheumatic fever (ARF) and rheumatic heart disease are the most serious complication of group A streptococcal infection. Acute post-streptococcal glomerulonephritis occurs 2–3 weeks after skin or throat infection with group A streptococcus. Overdiagnosis of ARF based on a raised ASOT is common in endemic areas, although an isolated high ASOT is not sufficient to diagnose ARF. Patients and methods This cross-sectional study was carried out in Menoufia governorate, and the collected sample was tested in Clinical Pathology Laboratory at Menoufia University Hospitals. Our study was conducted on 4000 children during the period of September 2018 to April 2019. All children are subjected to full medical history, thorough clinical examination (general and systemic), and laboratory investigation, including ASOT and erythrocyte sedimentation rate assessment and throat culture. Results There was no significant difference between age and sex in the studied group. Our study showed also nonsignificant correlations bet
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Development of precipitation hardenable Mg-Sn based wrought alloys
Related papers
Mohamad Sadegh Amiri Kerahroodi
Transactions of the Indian Institute of Metals, 2018
This paper presents a novel aging process consisting of two stages: an aging at 250°C for 12 h and a supplementary aging at 70°C for 18 h. The ingots of Mg-5Sn and Mg-5Sn-0.5Zn alloys were solution heat-treated for 24 h at 480°C and then quenched in water. Afterward, aging treatments were performed. To compare the effects of this process on age hardening response of both alloys, other aging treatments were performed at 200°C for 60 h and at 280°C for 12 h. The age hardening responses were measured by the Vickers hardness test. The structure of specimens was investigated by XRF, DSC, XRD, and FE-SEM. Also, mechanical properties were determined by tensile test and Charpy impact test. Although by using supplementary aging process, maximum hardness of these alloys is not very different in comparison with single-as well as double-aging processes, the necessary times of aging processes are significantly lower than those at around 90%, 85%, and 50%. After the aging process, the microstructure o