Wedge - with a guarantee. Drawing, description

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Wedge - with a guarantee. Tips for the home master

Builder, home master

The easiest and most common way to attach a wooden handle to the head of any hand tool is with a wedge. However, over time, this fastening weakens, loosens.

To prevent this from happening, I suggest using the same wooden wedge, but for reliability, lubricate it with epoxy glue. The remaining gaps in the tool head should also be filled with epoxy. Reliability - guaranteed.

Wedge - with a guarantee

Author: N.Akelev

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Leg exercises positively affect the health of the brain and nervous system 03.06.2018

Scientists from Milan State University (Italy) conducted an experiment in which several mice moved only with the help of their front paws for 28 days. The rodents continued to eat and move normally. They did not experience stress (otherwise the experiment would not have given accurate results). Nearly a month later, biologists examined a region of the brain - the subventricular zone, which in many mammals is responsible for maintaining the health of nerve cells. In the same area, neural stem cells produce new neurons.

The experiment showed that limited physical activity reduced the number of neural stem cells by 70 percent compared to a control group of mice that were allowed to walk on all fours. In addition, both neurons and oligodendrocytes (special support cells that support nerve cells) did not fully mature when exercise was significantly reduced.

Research shows that as you work (especially in heavy weight exercise), your leg muscles send signals to your brain that are vital for producing healthy nerve cells that are essential for your brain and nervous system. If exercise is done infrequently, the body experiences difficulties and cannot create new nerve cells - the very "building blocks" that allow us to cope with stress and adapt to the difficult challenges in our lives. "It's no coincidence that we have to be active: walk, run, squat, sit and use our leg muscles to lift things," says Dr. Adami.

The researchers also analyzed individual cells and found that exercise restriction reduces the amount of oxygen in the body, which creates an anaerobic environment and alters metabolism. Decreased exercise also appears to affect two genes, one of which, CDK5Rap1, is very important for the health of mitochondria, the body's "powerhouse" that synthesizes ATP (adenosine triphosphate), which plays an important role in energy and substance metabolism.

These results shed light on several important health issues, from cardiovascular disease that results from a sedentary lifestyle, to diseases such as spinal muscular atrophy, multiple sclerosis, and motor neurone disease.

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