Philadelphia, PA, September 8, 2016 - With population estimates of 9 billion people worldwide by 2050, the intensification of agriculture practices in recent decades has been necessary. Significant environmental concerns exist with the intensification of agriculture, however. In dairy farming, particularly on pasture-based dairies, leaching of nitrate-N (NO3-N) to groundwater is a primary concern, leading to certain countries placing limits on herd size on a fixed land area (i.e., stocking rate) to avoid loss of nutrients to groundwater.
The inside of a present day plant or animal cell quite closely resembles a busy city. Like an urban metropolis with different districts interlinked by a traffic network, a cell has distinct compartments connected to each other by a dynamic transport system.
One set of such interlinked compartments - the Golgi complex - is essential for many cellular functions, and a question that has long puzzled scientists is: how did such a complex compartment and traffic system arise within a cell?
A study by animal welfare specialists has provided new evidence that using electronic containment systems to restrict where pet cats venture does not result in long-term wellbeing problems.
Researchers of Aalto University have made a breakthrough in controlling the motion of multiple objects on a vibrating plate with a single acoustic source. By playing carefully constructed melodies, the scientists can simultaneously and independently move multiple objects on the plate towards desired targets. This has enabled scientists, for instance, writing words consisting of separate letters with loose metal pieces on the plate by playing a melody.
MIT researchers and their colleagues are designing an imaging system that can read closed books.
In the latest issue of Nature Communications, the researchers describe a prototype of the system, which they tested on a stack of papers, each with one letter printed on it. The system was able to correctly identify the letters on the top nine sheets.
PROVIDENCE, R.I. [Brown University] -- In the first study of its kind, public health researchers show that young adults who reported having negative experiences on Facebook -- including bullying, meanness, misunderstandings or unwanted contacts -- were at significantly higher risk of depression, even accounting for many possible confounding factors.
Researchers at the University of Adelaide are urging doctors and patients to refrain from using a specific steroid treatment to treat infertility in women unless clinically indicated, because of its links to miscarriage, preterm birth and birth defects.
ULXs, which are remarkably bright X-ray sources, were thought to be powered by black holes. But in 2014, the X-ray space telescope "NuSTAR" detected unexpected periodic pulsed emissions in a ULX named M82 X-2. The discovery of this object named "ULX-pulsar" has puzzled astrophysicists. Black holes can be massive enough to provide the energy needed to create ULXs, but black holes shouldn't be able to produce pulsed emissions. In contrast, "pulsars," a kind of neutron star, are named for the pulsed emissions they produce, but they are much fainter than ULXs.
The thesis entitled Computational intelligent methods for trusting in social networks, produced by the computer engineer David Núñez in the Computational Intelligence Group at the UPV/EHU's Faculty of Computing, falls within the framework of the European research project Social and Smart (SandS). A part of the project is focussing its attention on user interaction with smart domestic appliances linked to a smart module.
Satellite imagery showed that Post-Tropical Cyclone Hermine was just a swirl of clouds with no rainfall off the coast of southeastern Massachusetts on Thursday, Sept. 8. Just two days earlier, the GPM satellite saw that Hermine was still generating some rainfall.