نتایج جستجو برای: spea
تعداد نتایج: 1126 فیلتر نتایج به سال:
New Caledonia is an archipelago in the South Pacific with a high prevalence of acute rheumatic fever and rheumatic heart disease. Conducted in 2006, this study aimed at characterizing clinical manifestations and microbial features of isolates obtained from invasive Streptococcus pyogenes disease. Clinical and demographic data were collected prospectively. Isolates were biotyped, T typed, emm se...
Staphylococcal and streptococcal exotoxins, also known as superantigens, mediate a range of diseases including toxic shock syndrome, and they exacerbate skin, pulmonary and systemic infections caused by these organisms. When present in food sources they can cause enteric effects commonly known as food poisoning. A rapid, sensitive assay for the toxins would enable testing of clinical samples an...
BACKGROUND & OBJECTIVES Severe invasive infections caused by group A Streptococcus (GAS) are often associated with shock and organ failure. We describe epidemiological and disease related data from the national surveillance of invasive GAS infection in Denmark in addition to three fatal cases that occurred in Denmark in 2002 with gastrointestinal (GI) symptoms as the dominating preliminary sign...
Staphylococcus aureus is widely prevalent in the nasopharynges of healthy individuals (carriers) but can also cause serious infections. S. aureus can elaborate a variety of superantigen exotoxins in "carrier" or "pathogenic" states. Streptococcus pyogenes can also colonize the nasopharynx and elaborate superantigens. Unlike the acute effects of superantigen exotoxins absorbed through the gut or...
سابقه و هدف : مسائل بهرهبرداری از مخزن دارای اهداف مختلف و متنوع هستند که به ندرت منتهی به یک جواب بهینه میشوند و معمولاً در آنها مجموعهای از جوابهای بهینه (پارتو) موجود است. حل مسائل فوق در گذشته تنها با کاربرد روشهای ساده کننده میسر بوده است که از آن جمله میتوان به استفاده از ضرایب وزنی برای اهداف مختلف و تبدیل آنها به یک تابع هدف استفاده کرد. اما در سالهای اخیر با توسعه الگوریتمهای ...
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