lunes, 27 de diciembre de 2010

This week in Biology and Chemistry



Freshwater Sponges Have Functional, Sealing Epithelia with High Transepithelial Resistance and Negative Transepithelial Potential

Cryo-EM structure of the E. coli translating ribosome in complex with SRP and its receptor

Rapid evolutionary innovation during an Archaean genetic expansion

Select: Stem Cell Reprogramming

Integrative Analysis of the Caenorhabditis elegans Genome by the modENCODE Project

This week in Mathematics and Computation



Sleep State Switching

Development of the Selection and Manipulation of Self-Generated Thoughts in Adolescence

Symplectic curvature flow

From Quantum Deformations of Relativistic Symmetries to Modified Kinematics and Dynamics

QIP = PSPACE Breakthrough

viernes, 24 de diciembre de 2010

Pictures and Videos of the week




Sevilla at 111 Gigapixels

Stereoscopic 3D Web

Journalism in the Age of data







This week in Ecology and Society



Economic growth: enough is enough

Genetic history of an archaic hominin group from Denisova Cave in Siberia

Paradise burnt: How colonizing humans transform landscapes with fire

Large Variations in Southern Hemisphere Biomass Burning During the Last 650 Years

Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation

Global declines in oceanic nitrification rates as a consequence of ocean acidification

This week in Astronomy and Physics



Astrophysics: A strange ménage à trois

Images of a fourth planet orbiting HR 8799

A Giant Planet Around a Metal-Poor Star of Extragalactic Origin

Cassini Finds an Oxygen–Carbon Dioxide Atmosphere at Saturn’s Icy Moon Rhea

Crossover between Kelvin-Helmholtz and counter-superflow instabilities in two-component Bose-Einstein condensates

Pions in Large N Quantum Chromodynamics

Three-Dimensional Light Bullets in Arrays of Waveguides

Herschel-ATLAS: Rapid evolution of dust in galaxies in the last 5 billion years

sábado, 11 de diciembre de 2010

Pictures and Videos of the week



Thought of You from Ryan J Woodward on Vimeo.








This week in Mathematics and Computation



Performance Analysis of High Performance
Computing Applications on the Amazon Web
Services Cloud


Expectation and Surprise Determine Neural Population Responses in the Ventral Visual Stream

SYMPLECTIC CURVATURE FLOW

Topological Insulators and C^*-Algebras: Theory and Numerical Practice

ChemCloud: Chemical e-Science Information Cloud



3D Vector Field with Kinect from Nick Hardeman on Vimeo.

This week in Astronomy and Physics



A lower limit of Δz > 0.06 for the duration of the reionization epoch

Stochastic Late Accretion to Earth, the Moon, and Mars

Sgr A*: The Optimal Testbed of Strong-Field Gravity

Universal Quantum Viscosity in a Unitary Fermi Gas

Towards a complete treatment of the cosmological recombination problem

Elasticity of Globular Proteins Measured from the ac Susceptibility

This week in Biology and Chemistry



Crystal structure of a 117 kDa glucansucrase fragment provides insight into evolution and product specificity of GH70 enzymes

Elasticity of Globular Proteins Measured from the ac Susceptibility

Regulation and Rate Enhancement during Transcription-Coupled DNA Repair

Transcription of functionally related constitutive genes is not coordinated

Structure and folding of a designed knotted protein

The DNA Damage Road Map

This week in Ecology and Society



Simulations of the response of mesospheric circulation and temperature to the Antarctic ozone hole

Concurrent Desalination and Hydrogen Generation Using Microbial Electrolysis and Desalination Cells

Environmental_Consequences_of_Ocean_Acidification

Metal spectra as indicators of development

Forest transitions, trade, and the global displacement of land use

Sources and Sinks: A Stochastic Model of Evolution in Heterogeneous Environments

New Light on Human Prehistory in the Arabo-Persian Gulf Oasis

sábado, 4 de diciembre de 2010

This week in Mathematics and Computation



On the Erdos distinct distance problem in the plane

Group Width

Experimental demonstration of information-to-energy conversion and validation of the generalized Jarzynski equality

Rites of Love and Math - the Official Trailer from Edward Frenkel on Vimeo.


Experimental multiparticle entanglement dynamics induced by decoherence

Incubation, insight, and creative problem solving: A unified theory and a connectionist model.

Foundational model of structural connectivity in the nervous system with a schema for wiring diagrams, connectome, and basic plan architecture

Molecular Motors in Neurons: Transport Mechanisms and Roles in Brain Function, Development, and Disease

This week in Astronomy and Physics


Star Formation with and without the CMB from Britton Smith on Vimeo.

A geometric measure of dark energy with pairs of galaxies

A substantial population of low-mass stars in luminous elliptical galaxies



Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter

Accurate Measurement in the Field of the Earth of the General-Relativistic Precession of the LAGEOS II Pericenter and New Constraints on Non-Newtonian Gravity

Gravitational lensing of stars orbiting Sgr A* as a probe of the black hole metric in the Galactic center

Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at p
sNN = 2.76 TeV with the ATLAS Detector at the LHC


Island of inversion around 64Cr

This week in Biology and Chemistry



Tension directly stabilizes reconstituted kinetochore-microtubule attachments

Telomerase reactivation reverses tissue degeneration in aged telomerase-deficient mice

Reprogramming Cellular Behavior with RNA Controllers Responsive to Endogenous Proteins

Intermediate Steps

PML Regulates Apoptosis at Endoplasmic Reticulum by Modulating Calcium Release

The Evolution of Maximum Body Size of Terrestrial Mammals

A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus

lunes, 22 de noviembre de 2010

This week in Ecology and Society



Toward a whole-landscape approach for sustainable land use in the tropics

Glacial Silicic Acid Concentrations in the Southern Ocean

Loss of Carbon from the Deep Sea Since the Last Glacial Maximum

Coding Early Naturalists' Accounts into Long-Term Fish Community Changes in the Adriatic Sea (1800–2000)

The trophic fingerprint of marine fisheries

First Investigation of the Microbiology of the Deepest Layer of Ocean Crust

Toward a whole-landscape approach for sustainable land use in the tropics

This week in Astronomy and Physics



Entanglement of spin waves among four quantum memories

How to Look for Supersymmetry under the LHC Lamppost

Trapped antihydrogen

Effective Magnetic Monopoles and Universal Conductance Fluctuations

The Uncertainty Principle Determines the Nonlocality of Quantum Mechanics

Three-dimensional cellular ultrastructure resolved by X-ray microscopy

Concentric circles in WMAP data may provide evidence of violent pre-Big-Bang activity

This week in Biology and Chemistry



Protein Dynamics Control the Kinetics of Initial Electron Transfer in Photosynthesis

Structurally conserved five nucleotide bulge determines the overall topology of the core domain of human telomerase RNA

Human ISWI chromatin-remodeling complexes sample nucleosomes via transient binding reactions and become immobilized at active sites

Quantitative reactivity profiling predicts functional cysteines in proteomes

Plasticity of Animal Genome Architecture Unmasked by Rapid Evolution of a Pelagic Tunicate

Life is physics: evolution as a collective phenomenon far from equilibrium

Solid-State 17O NMR Spectroscopy of Large Protein–Ligand Complexes

domingo, 17 de octubre de 2010

This week in Biology and Chemistry


Spontaneous Asymmetry of Coated Spherical Nanoparticles in Solution and at Liquid-Vapor Interfaces

Deletion of the Cel48S cellulase from Clostridium thermocellum

NMR-Based Protein Potentials

xnd-1 regulates the global recombination landscape in Caenorhabditis elegans

Atomic-Level Characterization of the Structural Dynamics of Proteins

Rapid Construction of Empirical RNA Fitness Landscapes

Direct visualization of secondary structures of F-actin by electron cryomicroscopy

This week in Mathematics and Computation



Markov Chains and Dynamical Systems: The Open System Point of View

Algorithmic Thermodynamics

Algebra, Topology and Algebraic Topology of 3D Ideal Fluids

Kolmogorov Complexity in perspective. Part II: Classification, Information Processing and Duality

Progress in number theory in the years 1998-2009

Some Curvature Problems in Semi-Riemannian Geometry

A simple derivation and classification of common probability distributions based on information symmetry and measurement scale

On the Scaling Law for Compressive Sensing and its Applications




Lecture delivered before the International Congress of Mathematicians at Paris in 1900, by Professor David Hilbert

This week in Astronomy and Physics



Structure of 30S with 32S(p,t)30S and the thermonuclear 29P(p,γ)30S reaction rate

Time-reversal-symmetry breaking in circuit-QED-based photon lattices

Topological Quantization in Units of the Fine Structure Constant

Gas accretion as the origin of chemical abundance gradients in distant galaxies

Particle Acceleration on Megaparsec Scales in a Merging Galaxy Cluster

Real-space observation of emergent magnetic monopoles and associated Dirac strings in artificial kagome spin ice

The Structure of Iron in Earth’s Inner Core


This week in Ecology and Society



Precipitation-generated oscillations in open cellular cloud fields

Recent decline in the global land evapotranspiration trend due to limited moisture supply

An Oxidative Enzyme Boosting the Enzymatic Conversion of Recalcitrant Polysaccharides

World Wildlife Fund’s latest edition of its biennial Living Planet Report

Rise and fall of political complexity in island South-East Asia and the Pacific

Atmospheric CO2: Principal Control Knob Governing Earth’s Temperature

Global demographic trends and future carbon emissions

Pictures and Videos of the week

Nikon small world 2010 winners

Space Craft Contest

The Year’s Best Fossil Finds

Visions of toxic industrial splendour

Timelapse Crane Unleashed from Tom Lowe @ Timescapes on Vimeo.


Lagoa Multiphysics 1.0 - Teaser from Thiago Costa on Vimeo.