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Examples

  • Researchers at the Karolinska Insitute in Stockholm have published a nice little study in which they randomized couples with unexplained infertility to one of two treatment arms - (a) Clomid (a drug that stimulates ovulation) plus intrauterine insemination or (b) the same plus pertubation (flushing) of the fallopian tubes with an anesthetic solution just prior to insemination.

    Treating Infertility by Flushing the Tubes aka TBTAM 2008

  • This is similar to what is done with astro-mechanics, where pertubation theory is worked according to symmetries in a problem.

    Everything You Ever Wanted to Know About Quantum Mechanics, But Were Afraid to Ask Sean 2008

  • Think about it–if there was a positive water vapor feedback, a small pertubation would cause a cascading series of temperature increases–CO2 heat evaporates water, which soaks up IR, which evaporates more water, etc.

    IPCC and Data Access « Climate Audit 2007

  • The warming of the atmosphere IS the pertubation, not the cause.

    Unthreaded #19 « Climate Audit 2007

  • It is, as you say, very likely that much of the calculation is redundant since any single pertubation in the atomsphere will disipate and damp out locally and has no bearing on the long term.

    MBH98 Source Code: Cross-validation R2 « Climate Audit 2005

  • Even if you managed to get it into a stable state, the slightest pertubation, the tiniest change, could cause a drastic change at some unpredictable time in the future.

    ScienceBlogs Channel : Life Science 2010

  • I'm surprised, a little shocked, and filled with some dread, because your departure could presage a major pertubation in our little universe.

    BBC News | News Front Page | UK Edition 2010

  • I'm surprised, a little shocked, and filled with some dread, because your departure could presage a major pertubation in our little universe.

    BBC News | News Front Page | UK Edition 2010

  • The treatment of classical dynamical systems uses analysis on manifolds to provide the mathematical setting for discussions of Hamiltonian systems, canonical transformations, constants of motion, and pertubation theory.

    AvaxHome RSS: dejalu 2009

  • In point of fact, it would seem that the waiter felt this wholesome truth, for when he returned for the empty plates and dishes and was informed by Mr Swiveller with dignified carelessness that he would call and setle when he should be passing presently, he displayed some pertubation of spirit and muttered a few remarks about ‘payment on delivery’ and ‘no trust,’ and other unpleasant subjects, but was fain to content himself with inquiring at what hour it was likely that the gentleman would call, in order that being presently responsible for the beef, greens, and sundries, he might take to be in the way at the time.

    The Old Curiosity Shop 2007

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