Adhesive for the repair of rubber products. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Adhesive for the repair of rubber products. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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To obtain glue for repairing rubber products, take 90 g of pure gasoline, 15 g of carbon disulphide and 7,5 g of ether, mix them in bottles and put finely cut, unvulcanized rubber there. Then cork the bottle and put it in a warm place for several hours.

After the rubber is completely dissolved, the glue is shaken and then it is ready for use.

We must not forget that gasoline and carbon disulfide are extremely volatile and an explosion is possible at the slightest approach to fire, so all operations with this glue should be carried out during the day and away from fire. You should also refrain from smoking while working.

Author: Korolev V.A.

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Chronic lack of sleep can damage memory 19.06.2015

Scientists from the University of California at Berkeley (USA) found that lack of sleep leads to impaired conversion of short-term memory into long-term memory and contributes to the development of Alzheimer's disease.

The researchers conducted a series of experiments on 26 older people, instructing them to memorize certain words. After eight hours of sleep, the next morning, they were asked to repeat the words, using magnetic resonance imaging to record the activity of the hippocampus, which is responsible for short-term storage of memories, as well as the prefrontal cortex, responsible for long-term storage.

Using a fluorescent dye analogue, which is the only way to visualize accumulations of amyloid proteins in the human brain, the scientists found that those who showed deeper sleep and better memory had a minimum of beta-amyloids in the prefrontal cortex of the brain.

In subjects who memorized words worse and slept less deeply, beta-amyloids in the cortex turned out to be significantly higher than normal. Thus, scientists concluded that there is a definite relationship between poor sleep and the accumulation of beta-amyloids.

Obviously, a high concentration of beta-amyloids in the prefrontal cortex prevents the brain from entering the deep sleep phase, which contributes to the further accumulation of beta-amyloids. In addition, beta-amyloids interfere with the transfer of short-term memories from the hippocampus to long-term memory in the prefrontal cortex.

Now scientists are going to conduct a series of experiments to find out which of these two factors comes into play first: beta-amyloids undermine healthy sleep and contribute to the development of Alzheimer's disease, or lack of sleep leads to the accumulation of beta-amyloids with all the negative consequences.

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