Adventures In The Elements Transcript
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Adventures in Russ Hist Research
American historians of Russia have always been an intrepid lot. Their research trips were spent not in Cambridge or Paris, Rome or Berlin, but in Soviet dormitories with official monitors. They were seeking access to a historical record that was purposefully shrouded in secrecy, boxed up and locked away in closed archives. Their efforts, indeed their curiosity itself, sometimes raised suspicion at home as well as in a Soviet Union that did not want to be known even while it felt misunderstood. This lively volume brings together the reflections of twenty leading specialists on Russian history representing four generations. They relate their experiences as historians and researchers in Russia from the first academic exchanges in the 1950s through the Cold War years, detente, glasnost, and the first post-Soviet decade. Their often moving, acutely observed stories of Russian academic life record dramatic change both in the historical profession and in the society that they have devoted their careers to understanding.
Adventures in Russian Historical Research
American historians of Russia have always been an intrepid lot. Their research trips were spent not in Cambridge or Paris, Rome or Berlin, but in Soviet dormitories with official monitors. They were seeking access to a historical record that was purposefully shrouded in secrecy, boxed up and locked away in closed archives. Their efforts, indeed their curiosity itself, sometimes raised suspicion at home as well as in a Soviet Union that did not want to be known even while it felt misunderstood. This lively volume brings together the reflections of twenty leading specialists on Russian history representing four generations. They relate their experiences as historians and researchers in Russia from the first academic exchanges in the 1950s through the Cold War years, detente, glasnost, and the first post-Soviet decade. Their often moving, acutely observed stories of Russian academic life record dramatic change both in the historical profession and in the society that they have devoted their careers to understanding.
Evolution and Impact of Transposable Elements
Author: Pierre Capy
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
During the last 50 years, the perception oftransposable elements (TEs) has changed considerably from selfish DNA to sequences that may contribute significantly to genome function and evolution. The recent increased interest in TEs is based on the realization that they are a major genetic component (at least 10--20%) of all organisms and a major contributor to the mutation process. It is currently estimated that 70--80% of spontaneous mutations are the result of TE-mediated insertions, deletions, or chromosomal rearrangements. Thus, it seems at least plausible that TEs may playa significant role in the adaptation and evolution of natural populations and species. The ubiquity of TEs suggests that they are an old component of genomes which have been vertically transmitted through generations over evolutionary time. However, detailed analyses carried out over the last 20 years have revealed several unusual features of TE evolution: (i) TEs can be horizontally transferred between species; (ii) TE evolutionary rates can be dramatically increased by specific inactivation processes, such as the RIP (Repeat Induced Point mutation) mechanism in fungi; (iii) TEs can influence the regulation of other TEs by insertion or deletion; (iv) different classes of TEs in even distantly related species can be remarkably similar in both structure and function.