Determining if an individual has handled nuclear materials, such as uranium or plutonium, is a challenge national defense agencies currently face. The standard protocol to detect uranium exposure is through a urine sample; ...
Engineering
Nov 1, 2016
0
19
For the first time, scientists have used methods of network science to solve a fundamental astrophysical problem—explaining the so-called "stellar initial mass function," a distribution of stars by mass in galaxies and ...
Astronomy
Jun 7, 2016
2
156
Mobile phone data may reveal an underlying mathematical connection between how we move and how we communicate that could make it easier to predict how diseases—and even ideas—spread through a population, according to ...
General Physics
Jun 6, 2016
0
411
Most death and destruction inflicted by tornadoes in North America occurs during outbreaks—large-scale weather events that can last one to three days and span huge regions. The largest ever recorded happened in 2011. It ...
Earth Sciences
Mar 2, 2016
63
436
(Phys.org)—Whereas a dry twig can be broken with a single snap, breaking a bamboo chopstick produces more than 400 crackling sounds. In a new study, researchers have found similarities between the complex acoustic emission ...
While the contributions and value added by star performers can be extraordinary and even legendary, companies today often overlook the influence those top employees can have on others around them, according to new and previous ...
Social Sciences
Nov 2, 2015
0
21
A look at the world map tells us that countries and cities vary greatly in size, and that there are many more small cities than there are big ones. Interestingly, such uneven distribution of city sizes can be quite accurately ...
Environment
Aug 18, 2015
0
2
How heat travels matters. Yet, there is still no consensus on the exact physical mechanism that causes anomalous heat conduction - despite the existence of previous numerical simulation, theoretical predictions and experimental ...
General Physics
Jul 14, 2015
0
10
Many of us are familiar with bell-shaped curves that describe the distributions of school grades and total annual rainfall, among many other quantities. This ubiquitous distribution results when many points for individual ...
Mathematics
Jun 23, 2015
0
11
The power of DNA evidence to put someone behind bars or keep an individual free is a staple of television shows like "Law & Order" and "CSI." But not all DNA evidence is so straightforward.
Biotechnology
May 25, 2015
2
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