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Latest Scattering Stories

'BRIGHTS' Reveal Location Of Targeted Tissues
2012-11-21 10:41:38

Washington University in St. Louis Called BRIGHTs, the tiny probes described in the online issue of Advanced Materials on Nov. 15, bind to biomarkers of disease and, when swept by an infrared laser, light up to reveal their location. Tiny as they are, the probes are exquisitely engineered objects: gold nanoparticles covered with molecules called Raman reporters, in turn covered by a thin shell of gold that spontaneously forms a dodecahedron. The Raman reporters are molecules whose...

Unprecedented Look At Quantum Oscillations Through Neutron Experiments
2012-10-23 13:30:32

Researchers at the Department of Energy's Oak Ridge National Laboratory have found that nitrogen atoms in the compound uranium nitride exhibit unexpected, distinct vibrations that form a nearly ideal realization of a physics textbook model known as the isotropic quantum harmonic oscillator. In the experiment on the uranium nitride crystal -- with each of the light nitrogen atoms centered in a cage of heavier uranium atoms -- neutron scattering at ORNL's Spallation Neutron Source (SNS)...

2012-09-10 14:45:32

An international team of scientists have shown at an unprecedented level of detail how cells prioritize the repair of genes containing potentially dangerous damage. The research, published in the journal Nature and involving academics from the University of Bristol, the Institut Jacques-Monod in France and Rockefeller University in the US, studied the action of individual molecules in order to understand how cellular repair pathways are triggered. The genetic information that forms the...

Secrets Of Genetic Switch Unraveled
2012-08-31 16:46:43

When an invading bacterium or virus starts rummaging through the contents of a cell nucleus, using proteins like tiny hands to rearrange the host´s DNA strands, it can alter the host´s biological course. The invading proteins use specific binding, firmly grabbing onto particular sequences of DNA, to bend, kink and twist the DNA strands. The invaders also use non-specific binding to grasp any part of a DNA strand, but these seemingly random bonds are weak. Emory University...

Photonic Interactions Measured At The Atomic Level
2012-08-31 13:31:45

By measuring the unique properties of light on the scale of a single atom, researchers from Duke University and Imperial College, London, believe that they have characterized the limits of metal's ability in devices that enhance light. This field is known as plasmonics because scientists are trying to take advantage of plasmons, electrons that have been "excited" by light in a phenomenon that produces electromagnetic field enhancement. The enhancement achieved by metals at the nanoscale is...

Seawater Contains DNA Of Marine Fish And Mammals
2012-08-31 07:49:07

April Flowers for redOrbit.com - Your Universe Online A half liter of seawater can contain evidence of local fish and whale faunas and combat traditional fishing methods, says a new study from the University of Copenhagen. Researchers there have created a new way for monitoring marine biodiversity and resources by using DNA traces in seawater samples. The results of this study are now published in the journal PLoS ONE. "The new DNA-method means that we can keep better track of life...

2012-08-20 15:38:10

In a discovery that defies the popular meaning of the word "wire," scientists have found that Mother Nature uses DNA as a wire to detect the constantly occurring genetic damage and mistakes that “• if left unrepaired “• can result in diseases like cancer and underpin the physical and mental decline of aging. That topic “• DNA wires and their potential use in identifying people at risk for certain diseases “• is the focus of a plenary talk here...

Harvard Scientists Write Book In DNA And Accurately Copy, Read It Back
2012-08-17 10:57:16

Lawrence LeBlond for redOrbit.com - Your Universe Online DNA, the building block of life, is now home to more than just the world´s living creatures. Scientists from Harvard University report that they have written an entire novel in DNA, a feat that could revolutionize our ability to save data. Our genetic code packs billions of gigabytes into a single gram. That is significantly more information that a single microchip could even think about storing. In fact, a single milligram...


Latest Scattering Reference Libraries

Sky
2004-10-19 04:45:44

Sky -- Although almost everyone have seen it, sky is hard to be defined precisely. Generally, sky is the space seen when one looks upward from the surface of a planet. Some people define sky as the denser gaseous zone of a planet's atmosphere. Clouds, rainbows and weather all occur amongst a planet's sky. In astronomy, the sky is divided into many regions, called constellations. The blue colour of the daytime sky results from the selective scattering of light rays. When the sunlight...

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Word of the Day
humgruffin
  • A terrible or repulsive person.
Regarding the etymology of 'humgruffin,' the OED says (rather unhelpfully) that it's a 'made-up word.' We might guess that 'hum' comes from 'humbug' or possibly 'hum' meaning 'a disagreeable smell,' while 'gruffin' could be a combination of 'gruff' and 'griffin.'