منابع مشابه
RICHARD TYLER ( USA ) and CLAUDIA BARROS COELHO ( Brazil )
BACKGROUND: Subjective tinnitus is the perception of a sound in the absence of any physical source. It has been shown that tinnitus is associated with hyperactivity of the auditory cortices. Accompanying this hyperactivity, changes in non-auditory brain structures have also been reported. However, there have been no studies on the long-range information flow between these regions. RESULTS: Usin...
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Clinical disease resulting from atherosclerosis continues to cause extensive mortality and morbidity and uses an exorbitant amount of the financial resources available for health care. Atherosclerosis is a complex, multifactorial, and chronic disease influenced by a wide variety of genetic, environmental, and behavioral activities. However, it is at last widely recognized that among the known r...
متن کاملDo Normal Subgroups Have Straight Tails?
1. INTRODUCTION. In this article we show that group representations permit simple, visual explanations of semidirect products and related concepts. Along the way, we prove an extension of Cayley's theorem, define blocks and tails for the resulting representations, and investigate the title question: Do normal subgroups have straight tails? We consider representations of finite groups over the f...
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ژورنال
عنوان ژورنال: Memórias do Instituto Oswaldo Cruz
سال: 1954
ISSN: 0074-0276
DOI: 10.1590/s0074-02761954000200008