Archive for September 10th, 2007

Seven ten simple rules

September 10, 2007

Ten simple rules for

  1. Good poster presentation;
  2. Good oral presentation;
  3. Successful collaboration;
  4. Selecting a post-doctoral position;
  5. Reviewers;
  6. Getting grants; and,
  7. Getting published.

Via Coturnix.

Online free access and Web 2.0 experiments of Reed Elsevier

September 10, 2007

Abel Pharmboy at Terra Sigillata alerts us to some of the recent measures of Reed Elsevier. Take a look!

A few links from the Hindu

September 10, 2007

Brine flow in sea ice

September 10, 2007

Scineceblog tells us that

In the current issue of the journal Geophysical Research Letters, math Professor Ken Golden and colleagues show that brine moving up or down through floating sea ice follows “universal transport properties.”

“It means that almost the exact same formulas describing how water flows through sedimentary rocks in the Earth’s crust apply to brine flow in sea ice, even though the microstructural details of the rocks are quite different from sea ice,” says Golden, who currently is on an Australian research ship in Antarctica.

The paper under discussion is available here; and, here is the abstract:

The fluid permeability k of sea ice constrains a broad range of processes, such as the growth and decay of seasonal ice, the evolution of summer ice albedo, and biomass build-up. Such processes are critical to how sea ice and associated ecosystems respond to climate change. However, studies of k and its dependence on brine porosity φ and microstructure are sparse. Here we present a multifaceted theory for k(φ) which closely captures laboratory and field data. X-ray computed tomography provides an unprecedented look at the brine phase and its connectivity. We find that sea ice displays universal transport properties remarkably similar to crustal rocks, yet over a much narrower temperature range. Our results yield simple parameterizations for fluid transport in terms of temperature and salinity, and permit more realistic representations of sea ice in global climate and biological models.

Permeability, fluid flow, microstructures and their thermal evolution–not to mention the X-ray tomographic studies of connectivity–all these are problems of interest to me too (except that in this case the material under study is very different from the ones to which I am used to). An interesting piece; take a look!

A few links

September 10, 2007

Happy reading!