U(1)xU(1)xU(1) symmetry of the Kimura 3ST model and phylogenetic branching processes

Ubiquity of Log-normal Distributions in Intra-cellular Reaction Dynamic

Ubiquity of synonymity: almost all large binary trees are not uniquely identified by their spectra or their immanantal polynomials

UCLA AstroBiology Society: The First Student-Run Astrobiology Organization

Ultimate limit to human longevity

Ultraconserved Sequences in the Honeybee Genome - Are GC-rich Regions Preferred?

Ultrafast coelectrophoretic fluorescent staining of proteins with carbocyanines

Ultrastructural and Geochemical Characterization of Archean-Paleoproterozoic Graphite Particles: Implications for Recognizing Traces of Life in Highly Metamorphosed Rocks

Ultrastructural Study of Iron Oxide Precipitates: Implications for the Search for Biosignatures in the Meridiani Hematite Concretions, Mars

Ultraviolet Photostability of Adenine on Gold and Silicon Surfaces

Ultraviolet protection in microhabitats - lessons from the terrestrial poles applied to Mars

Ultraviolet Radiation inside Interstellar Grain Aggregates. I. The Density of Radiation

Ultraviolet Shadowing of RNA Causes Substantial Non-Poissonian Chemical Damage in Seconds

Ultraviolet-Stimulated Fluorescence and Phosphorescence of Aromatic Hydrocarbons in Water Ice

Unbalanced synaptic inhibition can create intensity-tuned auditory cortex neurons

Unbiased degree-preserving randomisation of directed binary networks

Unbound Protein-Protein Docking Selections by the DFIRE-based Statistical Pair Potential

Uncorrelated two-state single molecule trajectories from reducible kinetic schemes

Uncovering Biological Network Function via Graphlet Degree Signatures

Uncovering the hidden geometry behind metabolic networks