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Latest Roman Stocker Stories

Bacteria Flagella Utilize Evolutionary Foible
2013-07-09 08:58:42

redOrbit Staff & Wire Reports - Your Universe Online Marine microbes change swimming directions with a sideways flick of their lone flagellum, a type of high-speed controlled failure first documented in 2011 as a unique swimming stroke but whose underlying mechanism had eluded researchers until now. Bacteria swim by rotating the helical, hair-like flagella that extend from their unicellular bodies. Some bacteria, such as the Escherichia coli (E. coli) living in the human gut, have...

Movement Of Seawater Affects How Marine Bacteria Absorb Organic Material
2012-11-01 14:39:18

National Science Foundation New research shows that ocean turbulence directly affects the ability of microscopic marine organisms to recycle organic material back into the food web. Results of the study are published in this week's issue of the journal Science. Scientists John Taylor of Cambridge University and Roman Stocker at MIT found that there's a relationship between the natural movement of water in the ocean and the ability of marine bacteria to act as recyclers. "The...

2011-02-24 23:36:31

Adding particles to liquids to make currents visible is a common practice in the study of fluid mechanics, one that was adopted and perfected by artist Paul Matisse in sculptures he calls Kalliroscopes. Matisse's glass-enclosed liquid sculptures contain an object whose movement through the liquid creates whorls that can be seen only because elongated particles trailing the object align with the direction of the current; light reflects off the particles, making the current visible to the...

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2010-07-16 09:15:00

Microorganisms display a behavior characteristic of larger animals New research indicates that the interactions of microscopic organisms around a particular organic material may alter the chemical properties of the ocean and ultimately influence global climate by affecting cloud formation in the atmosphere. Justin Seymour, a research fellow at the University of Technology Sydney, is the lead author of a paper published in the July 16 issue of Science that describes how a relative of the...

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2009-04-15 11:51:21

Major impact envisioned for pharmaceutical, food, agriculture industries Scientists studying how marine bacteria move have discovered that a sharp variation in water current segregates right-handed bacteria from their left-handed brethren, impelling the microbes in opposite directions. This finding and the possibility of quickly and cheaply implementing the segregation of two-handed objects in the laboratory could have a big impact on industries like the pharmaceutical industry, for which the...

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2008-12-15 16:21:57

MIT researchers have created a microbial ecosystem smaller than a stick of gum that sheds new light on the plankton-eat-plankton world at the bottom of the aquatic food chain. The work, reported in the January print issue of American Naturalist, may lead to better predictions of marine microbes' global-scale influence on climate. Through photosynthesis and uptake of carbon compounds, diverse planktonic marine microorganisms "” too small to be seen with the naked eye "” help...


Word of the Day
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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