January 09, 2020 Thursday 03:06:38 PM IST
Fibre Optic Cables as Seismic Network
Placing seismometers under the sea is prohibitively expensive but an international team of scientists led by California Institute of Technology (CALTECH) has used fiber optic communications cables installed at the bottom of the North Sea to create a giant seismic network, tracking both earthquakes and ocean waves. The fact that the fiber network was able to detect and record a magnitude-8.2 earthquake near Fiji in August 2018 proves the ability of the technology to fill in some of the massive blind spots in the global seismic network, says Caltech graduate student Ethan Williams. Williams is the lead author of a study on the project that was published by Nature Communications on Dec. 18. "Fiber optic communications cables are growing more and more common on the sea floor. Rather than place a whole new device, we can tap into some of this fiber and start observing seismicity immediately," Williams says. The project relies on a technology called distributing acoustic sensing, or DAS. DAS was developed for energy exploration but has been repurposed for seismology. DAS sensors shoot a beam of light down a fiber optic cable.
The number of animals used for experimentation especially for development of new drugs has shown a dramatic rise with increase in morbidities in people. Yes, the scientific world is sensitised about it and working on the 3R principle- 'reduce', 'refine' 'replace' .The scientists at University of Geneva (UNIGE) have developed an ex vivo model of human lung epithelial cell cultures, whose function is to form a protective barrier and ensure the hydration of mucus. Pseudomonas ae...
A Michigan University Study (MSU) study has shown that large quantity of carbon is prevented from entering the atmosphere by microbial eco system formed in volcanic eruptions. A research team led by Karen Lloyd, an associate professor at the University of Tennessee, and Donato Giovannelli, a Professor at the University of Naples Federico II in Italy-found that microbes sequesters huge amount of carbon dioxide. They estimated that 170 metric tons of carbon could be gobbled up ...
Our skin gets its immunity due to density and distribution of immune cells which work as the soldiers in our body, according to a study by Sangbum Park, Asst Professor at Michigan State University who works in the Institute for Quantitative Health Science & Engineering. It was German Scientists Paul Langerhans who first discovered one type of immune cells in the skin in late 1800's but mistook it for cells of the nervous system. It cam eb to be called Langerhans cell...