Lawrence Berkeley National Laboratory (Berkeley Lab) scientists have developed the world’s first x-ray computed tomography (CT) scanner capable of examining entire core samples at remote drilling sites. The portable device, which employs the same high-resolution imaging technology used to diagnose diseases, could help researchers determine how to best extract the vast quantities of natural gas hidden under the world’s oceans and permafrost.
Berkeley Lab’s portable scanner has sailed the high seas and endured arctic cold, imaging more than 2000 feet of core sample along the way
A CT scan of a permafrost core reveals a mixture of sandstone and quartz fluvial grains cemented in an ice-sand matrix
The scanner images the distribution of gas hydrates in core samples pulled from deeply buried sediment. These hydrates are a latticework of water and methane that form an ice-like solid under high pressures and temperatures that hover just above freezing, conditions found in deep oceans and under Arctic permafrost. Scientists estimate the methane trapped in this crystalline mix may yield far more energy than the planet’s remaining reserves of fossil fuel.
But they must first determine how to find and remove it. As part of this investigational legwork, researchers drill into likely gas hydrate reserves and extract core samples. Select samples are then shipped to laboratories for analysis, and the resulting data is used to develop computer models that predict how gas hydrates behave in sediments, which may help researchers determine how to most efficiently locate and extract methane.
Dan Krotz | EurekAlert!
Electromagnetic water cloak eliminates drag and wake
12.12.2017 | Duke University
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12.12.2017 | California Institute of Technology
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
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