منابع مشابه
Safe in the Sun
سرطانهای جلدی را می توان به انواع پیش بدخیم و بدخیم تقسیم نمود. شایعترین ضایعه جلدی پیش بدخیم، کراتوز آفتابی نام دارد که بصورت ضایعات خشک و دلمه دار جلدی بروز می کنند - لنتیگو آفتابی یک ضایعه پیش بدخیم دیگرن است که بصورت لکه های قهوه ای و صاف (غیر برجسته روی پوست مشاهده می شوند) ضایعات پیش بدخیم در صورت عدم درمان می توانند بدخیم شوند.
متن کاملA radiation biologist looks to the future.
Once again we stand on a pinnacle of time. Backward we look to a year that has gone. Forward we look to the year ahead. Except that this particular pinnacle also separates the centuries and the millennia. Everyone, in every field, is taking stock: Where have we been and where are we going? We celebrate 100 years of radiation research. As the nineteenth century became the twentieth, X-rays had a...
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In heavy ion accelerators the beam line vacuum is effected by lost ions impinging on the beam pipe. Due to ion induced desorption gas is released from the walls into the vacuum. This vacuum degeneration effects the ion beam life time and is a serious luminosity limitation for a heavy ion synchrotron like SIS18. Here we report on a new approach to understand the physics of the ion induced desorp...
متن کاملCoordinating the Human Looks
Prescott et al. take a step forward in studying primate morphological evolution by a cellular anthropology approach. Through epigenomic profiling of in-vitro-derived cells, the authors identify and characterize candidate cis-regulatory elements underlying divergence in facial morphology between human and chimp, shedding new light on what makes us (look) human.
متن کاملWhat’s beyond looks? -- 1 Running Head: WHAT’S BEYOND LOOKS? What’s beyond looks? Reply to Gelman and Waxman
In the target article, Sloutsky, Kloos, and Fisher (SKF) presented evidence that young children perform induction based on appearance even when categories are not grounded in similarity. In their comment, Gelman and Waxman argue that evidence presented by SKF can be discounted because their stimuli are inadequate. This response focuses on two issues: (1) whether the criticism of SKF stimuli is ...
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ژورنال
عنوان ژورنال: Nature
سال: 1975
ISSN: 0028-0836,1476-4687
DOI: 10.1038/256691a0