منابع مشابه
Boris Chirikov - Sputnik of Chaos
In Russian, the word Sputnik means companion. But after the very first artificial satellite Sputnik, launched back in 1957, this word became also a metaphor for a pioneering, outstanding achievement. These meanings are appropriate for a portrait of Boris Chirikov, who was the founder of the physical theory of Hamiltonian chaos and made pioneering contributions to the theory of quantum chaos. In...
متن کاملWe Need Another Sputnik Moment!
The need for a qualified workforce in information technology and the broader science-technology fields, referred to as STEM (Science, Technology, Engineering and Mathematics) has reached crisis proportions. Native born U.S. students are not entering the STEM fields in college in sufficient numbers to avoid an impending technology-talent shortage. University enrollments are dwindling in the STEM...
متن کاملStructural studies of the Sputnik virophage.
The virophage Sputnik is a satellite virus of the giant mimivirus and is the only satellite virus reported to date whose propagation adversely affects its host virus' production. Genome sequence analysis showed that Sputnik has genes related to viruses infecting all three domains of life. Here, we report structural studies of Sputnik, which show that it is about 740 A in diameter, has a T=27 ic...
متن کاملRadioactivity in human tissues
The radioactivity in human tissues (lungs) obtained from the dead body of people who died by lung cancer in the region of Ptolemais, Northern Greece, where 16 units of 4 major coal-fired power plants are in operation, was studied. The specific activities of radioactive nuclides searched for in human tissues were not remarkable. The syndrome of lung cancer deaths at that area which showed an inc...
متن کاملModeling glacial flow on and onto Pluto’s Sputnik Planitia
Observations of Pluto’s surface made by the New Horizons spacecraft indicate present-day N 2 ice glaciation in and around the basin informally known as Sputnik Planitia. Motivated by these observations, we have developed an evolutionary glacial flow model of solid N 2 ice that takes into account its published thermophysical and rheological properties. This model assumes that glacial ice flows l...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 1964
ISSN: 0148-0227
DOI: 10.1029/jz069i011p02223