Phys.org - latest science and technology news stories
Social networking sites may be controlling your mind – here's how to take charge
How can you live the life you want to, avoiding the distractions and manipulations of others? To do so, you need to know how you work. "Know thyself", the Ancients urged. Sadly, we are often bad at this.
Chemist studying electric fields, microfluidics to improve dialysis technology
About the time Robbyn Anand began studying concentration and separation technologies for her doctoral research, her older brother David was diagnosed with end-stage renal failure.
Beyond wind speed—A new measure for predicting hurricane impacts
Six major hurricanes that engulfed the Atlantic Basin in 2017 were a devastating reminder of the vulnerability of coastal communities, where more than half the U.S. population resides.
New stellar stream discovered by astronomers
(Phys.org)—An international team of astronomers has detected a new thin stellar stream in the halo of the Milky Way galaxy. The newly discovered feature, named "jet stream," could help researchers answer fundamental questions about the mass distribution of the Milky Way's dark matter halo. The finding was presented November 24 in a paper published on the arXiv pre-print server.
Earliest example of large hydraulic enterprise excavated in China
(Phys.org)—A team of researchers from several institutions in China has uncovered one of the largest water management projects in the ancient world in what is now a part of the eastern coast of modern China. In their paper published in Proceedings of the National Academy of Sciences, the group describes their finding and compares it to other ancient water management systems.
IBM scientists demonstrate 10x faster large-scale machine learning using GPUs
Together with EPFL scientists, our IBM Research team has developed a scheme for training big data sets quickly. It can process a 30 Gigabyte training dataset in less than one minute using a single graphics processing unit (GPU)—a 10x speedup over existing methods for limited memory training. The results, which efficiently utilize the full potential of the GPU, are being presented at the 2017 NIPS Conference in Long Beach, California.
The patterns of climate change
Plant Ecology researchers at the University of Tübingen have developed a technique to monitor and predict how plant species will respond to climate change. Dr. Mark Bilton and Professor Katja Tielbörger, from the Institute of Evolution and Ecology, re-analysed data with Spanish collaborators from their unprecedented 16-year experiment. The experiment was conducted in an area the size of two football pitches within the Garraf National park south west of Barcelona. The landscape is mostly a Mediterranean scrubland, featuring thickets of low rise shrubs and herbs such as rosemary and thyme, and home to many protected species.
A crucial enzyme unveiled at last
After 40 years of research, researchers at the CEA, CNRS, University Grenoble-Alps, University of Montpellier and Inserm have finally identified the enzyme responsible for the tubulin detyrosination. Surprisingly, it is not one enzyme but two which control the modification of this essential component of the cytoskeletal structure. This work opens up new prospects for improved understanding of the role played by tubulin, deregulation of which has been linked to cancers, cardiovascular diseases and neural disorders.
Galileo's free-falling objects experiment passes space test further proving equivalence principle
A team of researchers from the French Aerospace Lab and at the Côte d'Azur Observatory working on France's MICROSCOPE satellite project has further confirmed the equivalence principle by recreating Galileo's free-falling objects experiment in a satellite. In their paper published in the journal Physical Review Letters, the group describes their experiment and why it was carried out.
A smart, portable and miniaturized system that can analyze sweat
EPFL researchers have teamed up with startup Xsensio to develop a tiny, fully portable system that can encapsulate and analyze biomarkers in a person's sweat. The low-power system, which fits on a chip measuring under 1 cm2, was presented this week at the International Electron Devices Meeting (IEDM) in San Francisco.
Record low contact resistivity on Ga-doped Ge source/drain contacts for pMOS transistors
At this week's 2017 International Electron Devices Meeting (IEDM), imec, the world-leading research and innovation hub in nanoelectronics and digital technology, reports ultralow contact resistivity of 5x10-10Ωcm2 on Gallium (Ga)-doped p-Germanium (Ge) source/drain contacts. The low contact resistivity and high level of Ga activation were achieved after nanosecond laser activation (NLA) at low thermal budget. The results show that highly Ga-doped Ge-rich source/drain contacts provide a promising route for suppressing parasitic source/drain resistance in advanced pMOS devices.
Source: https://phys.org/
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