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RISS 인기검색어
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- 저자 : Mohammad Ali Asaad (검색결과 2 건)
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Mohammad Ali Asaad,Noor Nabilah Sarbini,Arizu Sulaiman,Mohammad Ismail,Ghasan Fahim Huseien,Zaiton Abdul Majid,Pandian Bothi Raja 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.63 No.-
Influence of novel green Elaeis guineensis (EG) and silver nanoparticles (AgNPs) on the improved corrosion resistance of mild steel against acute acid attack is reported. Such EG/AgNPs were synthesized from palm oil leaf extracts and used as inhibitor with varying contents to inspect the feasibility of modifying the acid (1 M HCl(aq)) mediated anti-corrosion behaviour of mild steel. The structural and morphological properties of the extracted EG/AgNPs inhibitor (in powder form) were determined using TEM, XRD, and EDX analyses. Furthermore, the acid solution exposed mild steel specimens were characterized via FESEM, EDX, AFM, XRD, weight loss, polarization and electrochemical impedance measurements. Mild steel surface was found to adsorb the EG/AgNPs and formed a protective film advantageous for inhibiting the acid attack. Steel specimen incorporated with 10% (v/v) of EG/AgNPs inhibitor revealed maximum inhibition efficiency of 94.1%.
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Predictive factors for gangrene complication in acute calculous cholecystitis
Bader Hamza Shirah,Hamza Asaad Shirah,Muhammad Adnan Saleem,Mohammad Azam Chughtai,Mohamed Ali Elraghi,Mohamed Elsayed Shams 한국간담췌외과학회 2019 Annals of hepato-biliary-pancreatic surgery Vol.23 No.3
Backgrounds/Aims: Gallbladder gangrene is a grave complication of acute calculous cholecystitis that is difficult to detect preoperatively. Ultrasound could show a gallbladder wall that is more thickened. In addition, other clinical measures were reported to be possible predictive factors. Therefore, we aim in this study to evaluate the gallbladder wall thickness measured by ultrasound and other clinical measures as predictive factors for gangrene complication in acute calculous cholecystitis. Methods: A prospective cohort database analysis of the results of 674 patients diagnosed and treated for acute calculous cholecystitis between January 2010 and December 2014 was done. Patient’s inclusion criteria were acute calculous cholecystitis in adults who were operated within three days of onset of symptoms. Results: 117 (17.4%) patients had gangrene. Gallbladder sonographic wall thickness 5.1-6 mm, more than 6 mm, male gender, diabetes mellitus, leukocytosis ˃15,000 cells/ml, and age ≥40 years were found to be factors predisposing to gangrene complicated acute calculous cholecystitis that represented a statistically significant difference (p≤0.01). Conclusions: We conclude that gallbladder sonographic wall thickness 5.1-6 mm, more than 6 mm, male gender, diabetes mellitus, leukocytosis ˃15,000 cells/ml, and age ≥40 years were found to be factors predisposing to gangrene complicated acute calculous cholecystitis that represented a statistically significant difference. By implementing these risk factors, patients urgency for surgery can be decided in the emergency department. Other risk factors such as high alanine aminotransferase, elevated aspartate aminotransferase, and high alkaline phosphatase could be of help in the decision for early operation.
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