Tag Archives: symmetric

Deceptive-looking vortex line in superfluid led to twice-mistaken identity

By Guest PostNovember 9, 2014Scienceeinwegplastik, equilibrium, kunststoffmuell, label, ostracised, poison givers, rural china, structure, symmetric, toxic tetherballs, umweltprobleme durch kunststoff, university of chicago, zhu

So long, solitons: University of Chicago physicists have shown that a group of scientists were incorrect when they concluded that a mysterious effect found in superfluids indicated the presence of solitons—exotic, solitary waves. Instead, they explain, the result was due to more pedestrian, whirlpool-like structures in the fluid. They published their explanation in the Sept. 19 issue of Physical Review Letters. (more…)

Jurassic Park molecules?

By Guest PostFebruary 10, 2013Science3d architectures, alpha helices, amino acids, animal bodies, autoimmune disorders, beta strands, biochemist, biofuels, bundles of protein, burckhard seelig, chains, copies of genes, diversity, dna sequences, early life, earth, enzyme shapes, enzymes, fa an chao, fossil enzymes, gianluigi veglia, helixes, human dna, jurassic park, molecules, NASA, pcr, pieces of rna, sea anemones, sequencing rna, sponges, starfish, symmetric, university of minnesota, useful function, years of evolution

Enzymes evolved in the lab hold commercial and scientific promise

Whether big, small, slimy, or tall, most animal bodies are symmetric.

Except for sea anemones, starfish, sponges, and the like, animals have bilateral, or right-left, symmetry. Us included.

The bilateral body plan became the norm over eons of evolution. But what about molecules? Have any evolved common structures like a body plan? (more…)