A new article published in Current Protocols in Microbiology provides detailed instructions for constructing and using low-cost biological sand (biosand) filters capable of dramatically improving the quality of drinking water. The article has been made available for free and can be viewed here.
Biological sand filters, which have gained acceptance by the World Health Organization as a viable household water treatment technology, work by having water percolate slowly through a layer of sand, where microorganisms form a bacteriological purification zone. This process filters harmful pathogens from contaminated water. To use the filter, a person simply pours contaminated water into the household biosand filter and immediately collects treated water.
The filters will do more than provide safe, clean drinking water. According to Michael Lea, author of the article, "the filters will provide a cost-effective practical approach to combat poverty and inequality."
Sean Wagner | EurekAlert!
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24.05.2019 | Schwedischer Forschungsrat - The Swedish Research Council
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A new assessment of NASA's record of global temperatures revealed that the agency's estimate of Earth's long-term temperature rise in recent decades is accurate to within less than a tenth of a degree Fahrenheit, providing confidence that past and future research is correctly capturing rising surface temperatures.
The most complete assessment ever of statistical uncertainty within the GISS Surface Temperature Analysis (GISTEMP) data product shows that the annual values...
Physicists at the University of Basel are able to show for the first time how a single electron looks in an artificial atom. A newly developed method enables them to show the probability of an electron being present in a space. This allows improved control of electron spins, which could serve as the smallest information unit in a future quantum computer. The experiments were published in Physical Review Letters and the related theory in Physical Review B.
The spin of an electron is a promising candidate for use as the smallest information unit (qubit) of a quantum computer. Controlling and switching this spin or...
Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.
Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...
'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.
However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...
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