A flight to Mars will change the human body. Free Technical Library News

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A flight to Mars will change the human body

03.09.2022

Space medicine experts from the Australian National University have developed a mathematical model to identify the difficulties that the human body will face during a flight to Mars. The algorithm made it possible to calculate the key changes in the cardiovascular system that can occur during a long flight of six to seven months.

As a result of the study, scientists found that the main harm to the body will cause a long stay in microgravity. During a six-month flight, the structure of blood vessels and the cardiac system run the risk of significantly reorganizing under the new conditions of artificial gravity.

In such an environment, blood is not attracted to the limbs, as it is with Earth's gravity. An astronaut's heart slows down because it doesn't have to pump as much blood as it does on Earth. But the rest of the body does not expect this, and the brain thinks that too much water has accumulated in the body, because the fluid is retained in the upper body. Protective mechanisms against excess fluid come into play, through which dehydration occurs. At the same time, the expedition member himself may not even notice this.

However, it's not that terrible. The authors of the study believe that such changes will not cause major health losses, and astronauts will be able to maintain their working capacity without problems even after six months of space flight.

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New tape density record 19.04.2015

IBM Research has developed a technology for recording data on the surface of a linear magnetic tape, providing a record density of 123 billion bits per square inch without compression. This density corresponds to 220 TB in a standard ribbon cartridge that fits easily in the palm of your hand.

Magnetic tape has traditionally been used to archive information and store backup copies of data. Coughlin Associates estimates that over 500 exabytes of data is stored on tape today. IBM launched its first commercial product in this category almost 60 years ago. At that time, the capacity of the reel of the 726 Magnetic Tape Unit with a half-inch wide magnetic tape was about 2 MB, that is, during the specified period, the capacity of the media was increased by 110 million times. Let's clarify that 220 TB cartridges are not yet available and we are talking about a comparison with a potentially possible volume indicator. One way or another, the achievement of IBM Research engineers proves that tape technology continues to be relevant.

A record-breaking result was obtained using a magnetic tape prototype developed jointly with Fujifilm. Recall that a year ago, partners achieved an indicator of 85,9 billion bits per square inch.

The manufacturer notes that technologies that are being developed to achieve record data density are later implemented in serial IBM products.

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