منابع مشابه
“What goes round comes round”
Soon after the discovery of x-rays by Roentgen, radioactivity by Becquerel, and radium by the Curies, it was concluded that x-rays could not only be used for diagnostic purposes but also for therapy [1,2]. In the early years of radiation therapy, physicians had little understanding or knowledge of the physical nature and biological effects of radiation, the delivered doses were not certain, the...
متن کاملWhat happens when Penelope comes?
Transposable elements (TEs) are ubiquitous residents in eukaryotic genomes. They can cause dramatic changes in gene expression and lead to gross rearrangements of chromosome structure, providing the basis for rapid evolution. The virilis species group of Drosophila contains certain species that can be crossed under experimental conditions and their phylogeny is thoroughly investigated. We have ...
متن کاملWhat goes around, comes around.
To cite: Magalhães-Costa P, Chagas C. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2015209745 DESCRIPTION A 60-year-old Caucasian Portuguese man, who had emigrated from Mozambique 30 years earlier, presented to our department with a 1-month history of epigastric pain, nausea, vomiting, weight loss and watery diarrhoea. He had two previous episodes of treated sy...
متن کاملWhat Comes Beyond the Standard Models
We investigate the possibility of producing inflation with the use of walls rather than the customary inflaton field(s). In the usual picture one needs to fine-tune in such a way as to have at least 60 e-foldings. In the alternative picture with walls that we consider here the “only” fine-tuning required is the assumption of a multiply degenerate vacuum alias the multiple point principle (MPP).
متن کاملPhysiology education today: what comes next?
As we planned the articles in this special section, I began thinking about how physiology education has changed in recent years. In many ways, the teaching of physiology has been reflected in its textbooks. Until the early 1980s, those books were mostly descriptive text, with only a few simple line drawings. Contrast that with the physiology textbooks of today, especially at the undergraduate l...
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ژورنال
عنوان ژورنال: The Quarterly Journal of Economics
سال: 2010
ISSN: 0033-5533,1531-4650
DOI: 10.1162/qjec.2010.125.4.1399