منابع مشابه
Nobel prize winners in physics from 1901 to 1990: Simple statistics for physics teachers
A demographic database for the 139 Nobel prize winners in physics from 1901 to 1990 has been created from a variety of sources. The results of our statistical study are discussed in the light of the implications for physics teaching.
متن کاملJohannes Holtfreter (1901-1992)
Johannes Holtfreter [6] made important discoveries about the properties of the organizer [7] discovered by Hans Spemann [8]. Although he spent much time away from the lab over many years, he was a productive researcher. His colleagues noted that the time he spent away helped revitalize his ideas. He is credited with the development of a balanced salt medium to allow embryos to develop; the disc...
متن کاملErnst Mayr, a retrospective.
During the late summer of 1979, Ernst Mayr and I (Figure 1) had finished editing The Evolutionary Synthesis: Perspectives on the Unification of Biology [1]. He knew that I was working on a long essay about Theodosius Dobzhansky and also planning a book about Sewall Wright. From his farm in Wilton, New Hampshire, Ernst handwrote me a letter (Figure 2) from which this excerpt is taken: ‘In your w...
متن کاملOp-gbev130144 1886..1901
Transposable elements (TEs) are a dominant feature of most flowering plant genomes. Together with other accepted facilitators of evolution, accumulating data indicate that TEs can explain much about their rapid evolution and diversification. Genome size in angiosperms is highly correlated with TE content and the overwhelming bulk (>80%) of large genomes can be composed of TEs. Among retro-TEs, ...
متن کامل1901 Arizona Comstock Law
In 1901, the Arizona Territorial Legislature codified territorial law that illegalized advertising, causing, or performing abortions anywhere in Arizona. The 1901 code, in conjunction with the federal Comstock Act, regulated the advertisement and accessibility of abortion [3] services and contraceptives in Arizona. The Federal Comstock Act of 1873 [4] had illegalized the distribution of materia...
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ژورنال
عنوان ژورنال: Ibis
سال: 2008
ISSN: 0019-1019
DOI: 10.1111/j.1474-919x.1992.tb03813.x