منابع مشابه
50 Million Announced Forty Years Ago 100 Million Mexicans… Only
1% in 2000. Although the objective was far from being reached (the current rate being close to 2%), in 2000 Mexico had 53 million inhabitants fewer than it would have had if fertility had remained at its 1970 level. The population pyramids of 1930, 1970 and 2000 clearly illustrate this dynamics (Figure 2). In 1930 the population was beginning to recover from the aftereffects of the Revolution a...
متن کاملForty Years of X-Ray Binaries
In 2012 it was forty years ago that the discovery of the first X-ray binary Centaurus X-3 became known. That same year it was discovered that apart from the High-Mass X-ray Binaries (HMXBs) there are also Low-Mass X-ray Binaries (LMXBs), and that Cygnus X-1 is most probably a black hole. By 1975 also the new class of Be/X-ray binaries was discovered. After this it took 28 years before ESAs INTE...
متن کاملForty million years of mutualism: evidence for eocene origin of the yucca-yucca moth association.
The obligate mutualism between yuccas and yucca moths is a major model system for the study of coevolving species interactions. Exploration of the processes that have generated current diversity and associations within this mutualism requires robust phylogenies and timelines for both moths and yuccas. Here we establish a molecular clock for the moths based on mtDNA and use it to estimate the ti...
متن کاملForty Years of Perceptrons
More than forty years have passed since a learning machine called the perceptron was proposed by Rosenblatt. It has played a major role for these forty years, not only in the area of computational neuroscience in elucidating the function of cerebellum, but also in theoretical and practical studies of learning machines. The present talk reviews these developments from my personal point
متن کاملForty years in cardiology.
ELECTION to this lectureship has brought me an honour which I rank highly, in that I am aware of the acknowledged distinction of my predecessors and which laid claim to their appointment to this office. The invitation has also placed upon my shoulders a heavy responsibility, namely to discharge my duty as creditably as they did, and has planted in me a fear lest I fail to do so. I mean, however...
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ژورنال
عنوان ژورنال: Genome Biology
سال: 2000
ISSN: 1465-6906
DOI: 10.1186/gb-spotlight-20000526-01