توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱An industrial investigation into COx formation in p–Xylene oxidation reactor
اطلاعات انتشار: هفتمین کنگره ملی مهندسی شیمی، سال
تعداد صفحات: ۹
During the liquid–phase oxidation of P–Xylene, over–oxidation of reactant and solvent to Carbon dioxide and Carbon monoxide is generally known as the burning side reaction. The effect of reaction pressure and temperature on the burning side reaction was studied in this paper. Several tests carried out in an industrial reactor which produces Terephthalic Acid by liquid–phase oxidation of P–Xylene and the experimental data of the burning side reaction were analyzed and reported. The yield of main reaction was kept constant by changing in catalyst concentration. The result showed the rates of burning side reactions are reduced remarkably with decreasing in reactor pressure and temperature. Finally, a direct relation between burning side reaction and reaction pressure and temperature was developed and the model parameters were determined by data fitting of the burning side reaction rate curves.<\div>

۲The Relationship between the Presence of Enterotoxin Type B Gene and Antibiotic Resistance in Staphylococcus aureus
اطلاعات انتشار: Journal of Applied Biotechnology Reports، دوم،شماره۱، Winter ۲۰۱۵، سال
تعداد صفحات: ۴
Staphylococcus aureus is a hazard to human health since they can cause a wide variety of hospital–associated infections ranging from minor skin infections to post–operative wound infections and food poisoning which produces many different virulence factors, including enterotoxins (SEs). Although studies have been done regarding the difference between virulence factors of sensitive strains and resistant to antibiotics, the aim of this study was to investigate this topic in different patients. This cross–sectional study was performed on 100 patients admitted to a hospital in Tehran. After preparing of wounds samples, antibiogram study was done by disc diffusion method and prevalence of staphylococcal enterotoxin type B or seb gene was confirmed by Polymerase Chain Reaction. Data was analyzed using SPSS 17 software. Results showed that the highest percentage of isolates with positive seb gene is about 7% which related to amoxicillin (6.6%), penicilline and cotrimoxazole (6.5%). More than 90% of isolate are resistant to amoxicillin, penicillin and cotrimoxazol. According to results, a significant relationship between seb gene and resistance to related antibiotics was not observed.
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