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A dog has a positive effect on the health of its owner

27.09.2023

Keeping a dog indoors can have positive effects on human health, reducing the risk of heart disease, diabetes and depression.

Scientists analyzed the impact of having a dog in the house on a person's physical and mental health and identified a number of significant benefits, despite the presence of scientific studies that call this into question.

A study of nearly 4 million people in the US, Canada, Scandinavia, New Zealand, Australia and the UK in 2019 found that owning a dog was associated with a 24% reduction in the likelihood of premature death from any cause.

This benefit is especially noticeable among people who have had a heart attack or stroke. Their risk of dying from cardiovascular disease is reduced by 31%. The US Heart Association also emphasizes the benefits of dog ownership in reducing the risk of diabetes. Regular walks with your pet can promote weight loss.

Professor Harold Duke of Western Carolina University lists a number of benefits including increased survival, improved heart health, less loneliness, lower blood pressure, psychological well-being, reduced depression and stress, fewer doctor visits, increased self-esteem, improved sleep and physical activity.

However, it should be noted that there are studies that indicate the opposite trends: pet owners are more likely to experience loneliness, depression and panic attacks, and also have an increased risk of asthma, obesity, high blood pressure, stomach ulcers, migraines and use more medications.

The situation is complicated by the fact that choosing an animal that is not suitable for its character can lead to negative consequences for a person’s physical and mental health. However, when there is harmonious interaction between human and animal, a dog or other pet can have an extremely positive impact, especially during times of stress.

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Error free oscillating catalysts 09.03.2020

A team of researchers at the University of Minnesota has created an oscillating catalyst technology that can speed up certain chemical reactions without side processes or errors.

Catalysts are used in many chemical processes today. They speed up chemical reactions by lowering their activation energy. A chemical reaction occurring on the surface of a catalyst, such as a metal, accelerates faster than unwanted side processes. If the target reaction proceeds much faster than any other side reaction, then the catalyst is well suited for the synthesis of the most valuable products. But sometimes even a slight admixture of by-products can significantly contaminate the final compound. In addition, not in all reactions, side processes proceed much more slowly than the main ones - sometimes they are even comparable with them in speed.

To solve these problems, scientists at the Universities of Minnesota and Delaware, the University of California at Santa Barbara, and the University of Massachusetts Amherst have developed a new class of catalysts that dramatically speed up targeted chemical reactions using vibrations. When the frequency and amplitude of the acting wave coincide with the characteristics of the target reaction, then it becomes thousands of times faster than all side processes.

"All chemical reactions have their own frequencies, like the strings on a piano or a guitar," says study lead author Paul Dauenhauer. "When we find that right frequency for the desired reaction, the catalyst is almost perfect - wasteful side processes almost completely stop."

The discovery is of particular importance for the production of key chemicals in the energy, materials, food and medical industries. The most important chemicals are produced on a huge industrial scale, so that even well-developed catalysts form some by-products, creating thousands of tons of waste per year. Now researchers know how to deal with this.

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