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Current issue

ELEKTRO 10/2017 was released on October 10th 2017. Its digital version will be available on October 10th 2017.

Topic: Electrical power engineering; RES; Fuel cells; Batteries and accumulators

Main Article
Electricity storage
Electrochemical impedance spectroscopy of batteries

SVĚTLO (Light) 5/2017 was released on September 18th 2017. Its digital version will be available on September 18th 2017.

Luminaires and luminous apparatuses
MAYBE STYLE introducing LED design luminaires of German producer Lightnet
TREVOS – new luminaires for industry and offices
How many types of LED panels produces MODUS?
Intelligent LED luminaire RENO PROFI

Interiors lighting
The light in indoor flat interior – questions and answers

Stanford engineers design a home urine test

16.05.2016 | Stanford News | news.stanford.edu

Scientists and Stanford detail their new low-cost, portable device that would allow patients to get consistently accurate urine test results at home, easing the workload on primary care physicians.

As a color-based test, the dipstick needs consistent lighting conditions. The same color can look different depending on its background, so the engineers created a black box that covers the dipstick. Its flat, interlocking parts make it easy to mail, store and assemble.

Home based urine test

The engineers also designed a multi-layered system to load urine onto the dipstick. A dropper squeezes urine into a hole in the first layer, filling up a channel in the second layer and ten square holes in the third layer. When the third layer is inserted into the black box, some clever engineering ensures that a uniform volume of urine is deposited on each of the ten pads on the dipstick at just the right time.

Finally, a smartphone is placed on top of the black box with the video camera focused on the dipstick inside the box. Custom software reads video from the smartphone and controls the timing and color analysis. To perform the test a person would load the urine and then push the third layer into the box. When the third layer hits the back of the box, it signals the phone to begin the video recording at the precise moment when the urine is deposited on the pads.

Read more at Stanford News

Image Credit: Stanford University School of Engineering

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