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Cold and wellness

23.04.2016

Scientists at the University of Freiburg in Germany, led by Marco Prinz, have described the molecular mechanism responsible for the characteristic state of viral or bacterial infections. General weakness, fog in the head, apathy are often more severe symptoms than the actual symptoms of the disease, such as cough or sore throat.

The researchers performed an experiment on mice, infecting them with a virus and causing a short illness. They measured the impact of the disease on behavior using a standard rodent depression test: Animals are placed in a container of water, usually they fight to get out of the water, but when depressed they quickly give up and just swim. Infected mice showed this behavior twice as often.

It turned out that the virus stimulated the production of interferon-beta in the body of mice. It in turn stimulated receptor molecules in the protective membranes of brain cells and the cells that line blood vessels that are part of the blood-brain barrier. They also found that in response to interferon-beta, vascular cells produce a molecule called CXCL10, which affects neurons and leads to a decrease in learning ability.

All these processes together form the very painful depression characteristic of various infections.

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Plastic road made from recycled bottles 22.07.2015

The Netherlands could be the first country in the world to have plastic roads and walkways made from recycled plastic bottles.

The city of Rotterdam is considering a similar pilot project that VolkerWessels could implement. According to the creators, such a canvas is more reliable than conventional asphalt, better able to withstand critical temperatures (from -40°C to 80°C) and requires less maintenance.

Another advantage of this technology is the speed of laying the road. It is three times higher than in the case of asphalt. Eco-friendliness is also cited as an argument, although it is still unclear how “clean” the recycling of plastic bottles into the roadway itself will be. The proposed design allows various cables to be laid inside the road "modules".

At this stage, all this is just a project. The creators claim that they will be able to create the first road within three years.

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