871,060 articles

Light pulses take a quantum walk

Tourists who drift aimlessly during a sightseeing tour are moving randomly - just like electrons that move from one atom to the next. To obtain a better understanding of these random motions it is often useful to reduce their complexity. Physicists do this by simulating random walks. These simulations can bring new insights in the quantum world as well. Researchers at the Max Planck Institute for...

Nanopower: Avoiding electrolyte failure in nanoscale lithum batteries

(PhysOrg.com) -- It turns out you can be too thin -- especially if you're a nanoscale battery. Researchers from the National Institute of Standards and Technology, the University of Maryland, College Park, and Sandia National Laboratories built a series of nanowire batteries to demonstrate that the thickness of the electrolyte layer can dramatically affect the performance of the battery,...

New findings awaken age-old anesthesia question

(PhysOrg.com) -- Why does inhaling anesthetics cause unconsciousness? New insights into this century-and-a-half-old question may spring from research performed at the National Institute of Standards and Technology. Scientists from NIST and the National Institutes of Health have found hints that anesthesia may affect the organization of fat molecules, or lipids, in a cell’s outer...

NIST releases technical guidance for evaluating electronic health records

An important aspect of any product is how easily someone can use it for its intended purpose, also known as usability. Electronic health records (EHR) that are usable have the potential to improve patient care, which is why the National Institute of Standards and Technology has outlined formal procedures for evaluating the usability of EHR systems.

Space Image: Sunspots and solar flares

(PhysOrg.com) -- NASA's Solar Dynamics Observatory (SDO) captured this image of an M7.9 class flare on March 13, 2012 at 1:29 p.m. EDT. It is shown here in the 131 Angstrom wavelength, a wavelength particularly good for seeing solar flares and a wavelength that is typically colorized in teal. The flare peaked at 1:41 p.m. EDT. It was from the same active region, No. 1429, that produced flares and...

Speca -- An intriguing look into the beginning of a black hole jet

Its catalog number is NGC 3801, but its name is SPECA – a Spiral-host Episodic radio galaxy tracing Cluster Accretion. That’s certainly a mouthful of words for this unusual galaxy, but there’s a lot more going on here than just its name. “This is probably the most exotic galaxy with a black hole, ever seen. It has the potential to teach us new lessons about how galaxies and...

Wolves eating less than 1% of German livestock, study finds

Despite the reappearance of wolves in Germany, local farmers should not worry about these creatures attacking and eating their livestock. Less than 1% of farm animals are on the wolves' menu, new research shows. Presented in the journal Mammalian Biology, the study highlights how wolves will not risk confrontation with guard dogs or hazardous objects in order to secure food.

Japan, US, and EU to meet on rare earths

Japan said Wednesday it will host the European Union and United States at a meeting on developing alternatives for rare earths as Chinese controls on the key minerals raise fears of a supply squeeze.

Scale-out processors: Bridging the efficiency gap between servers and emerging cloud workloads

Cloud computing has emerged as a dominant computing platform providing billions of users world-wide with online services. The software applications powering these services, commonly referred to as scale-out workloads and which include web search, social networking and business analytics, tend to be characterized by massive working sets, high degrees of parallelism, and real-time constraints –...