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Current issue

ELEKTRO 7/2019 was released on June 26th 2019. Its digital version will be available on July 26th 2019.

Topic: Cables, conductors and cable engineering, Tools, equipment and accessories for work with cables

Main Article
Asset management and diagnostic needs in Industry 4.0

SVĚTLO (Light) 3/2019 was released on June 11th 2019. Its digital version will be available on July 15th 2019.

Fairs and exhibitions
Euroluce 2019 by designers eyes
Exhibition Light in architecture 2019
Amper 2019 in capture of sophisticated technologies

Refreshing our memory
Lighting glass from Kamenný pahorek

Sorting good germs from bad, in the bacterial world

02.09.2015 | ASU | researchmatters.asu.edu

Your intestines are home to about 100 trillion bacteria. That’s more than the number of cells that comprise the entire human body. Armies of bacteria sneak into our bodies the moment we are born, uninvited but necessary guests.

For the most part, these bacteria are industrious and friendly. Some of them are even beneficial, helping with digestion and producing vitamins. A few miscreants, though, will kill us if we let them stay.

The difference between good and bad bacterias

Sometimes the difference between harmless and harmful is miniscule. Take E. coli for instance. Billions of E. coli organisms live in the average person’s intestines. They go about their business causing no trouble whatsoever. However, one particular strain of E. coli, O157:H7, causes about 2,000 hospitalizations and 60 deaths in the U.S. every year. The differences between this strain and others are detectable only at the molecular level.

But how do we separate friend from foe? Determining whether or not bacteria are harmful usually requires growing cultures from food or infected patients. This is a time-consuming process that must be carried out in a laboratory. Since an estimated 9.4 million cases of food-borne illness occur each year in the U.S., we stand to gain much from new technologies that can rapidly identify microorganisms.

Scientists at Arizona State University’s Department of Chemistry and Biochemistry, in the College of Liberal Arts and Sciences, have developed a new device that could significantly speed up the identification process for harmful bacteria and other microorganisms. The team, led by professor Mark A. Hayes, hopes to create handheld, battery-operated devices that could deliver answers in minutes, instead of days.

Read more at ASU

Image Credit: Paul V. Jones

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