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A well-chosen diet improves the performance of children

27.09.2016

Scientists from the University of Eastern Finland have found out how the quality of nutrition affects intelligence. It turned out that the Finnish, Baltic and Mediterranean diets have a positive effect on the ability of schoolchildren to perceive information.

For their experiment, the researchers selected 161 volunteers aged 6-8 years. All children were first grade students. For three years of study, scientists monitored the nutrition and academic performance of children. It turned out that schoolchildren who ate Finnish, Baltic and Mediterranean cuisine better absorbed textual information. The peculiarity of these diets is less sugar and a large amount of whole grains, fish, berries, fruits and vegetables.

Scientists note that nutrition is important for schoolchildren, but the status of the family, the presence of weight problems, and physical activity have no lesser role on intelligence.

Scientists have previously reported that heredity plays a key role in student achievement. This factor is associated with 55% of the differences in the activity and grades of children in the classroom. Also, experts noted that success at school still largely depends on the educational institution and the situation in the family.

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High Speed Travel to Mars 26.01.2023

NASA has selected several new space projects for possible implementation in the future. Among them is the project of American scientists, which consists in using a new type of nuclear engine in a space rocket so that it can fly to Mars in 45 days.

NASA now has very far-reaching plans for space exploration, and therefore actively attracts scientists to develop new technological projects that can be implemented in space. Focus has already written about some of them, which concern, for example, the creation of an oxygen pipeline on the Moon and a new aircraft for flights on Titan. At this stage, NASA has selected 14 projects that initially received funding for further development. That is, this is only the first phase of the study, and only a few projects will go to the third phase.

NASA is going to blow up astronauts to the moon in a few years, and then at the end of the decade to begin construction of the first lunar base. The next stage in space exploration will be a landing on Mars, which may already take place in the next decade. Therefore, projects related to the Red Planet are of particular interest to the US space agency.

Among such projects is a new nuclear propulsion concept for a space rocket from Ryan Gosse of Florida State University in the US. In fact, the concept is not entirely new, although it is an innovative technology that may receive further funding. Back in the 20th century, the United States was already engaged in the creation of a nuclear thermal engine and a nuclear electric engine for space rockets. But these projects have not received further development.

Gosse proposed to combine two types of nuclear engine into one, which would consist of two parts, i.e. thermal and electrical. This will allow, according to the scientist, to get to Mars in 45 days. This nuclear engine, as mentioned above, will consist of two components that will complement each other.

For example, a nuclear thermal propulsion consists of a nuclear reactor that heats liquid hydrogen fuel, turns it into ionized hydrogen gas, which then creates thrust. On the other hand, a nuclear electric propulsion consists of a nuclear reactor providing electrical power to a Gall effect propulsion, that is, an ion propulsion generating an electromagnetic field. This field ionizes and accelerates an inert gas such as xenon to create thrust.

Both of these engines have significant advantages over conventional chemical propulsion in space rockets. The new engine, according to Gosse, will combine the advantages of both nuclear rocket engines - thermal and electric.

Such a double structure could provide a fast flight to Mars in 45 days, and so people can quickly fly to other, more distant planets in the solar system.

Today, conventional rocket engines are capable of delivering astronauts to Mars in 9-12 months. Therefore, such a short trip of 45 days will significantly reduce the risks of a manned flight, and will also be safer for the health of astronauts.

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