sprutGood day! Today I would like to tell you about biomedical experiments conducted onboard the International Space Station. Biomedical experiments represent one of the most important research programs conducted onboard ISS. Such experiments have been conducted for a long time, ever since manned spaceflight began. These experiments make it possible to accumulate a lot of experience for us, cosmonauts.

Mostly, they are aimed at making our stay onboard the space station more or less comfortable. And, what is most important, make our return to Earth as comfortable as possible.

In principle, the accumulated experience already enables cosmonauts to stay onboard ISS for six months and get back home in a fairly good condition. There are even some record breakers who stayed onboard the station for more than a year. For example, Valeri Polyakov in 1995 established a record, which has not yet been surpassed. He stayed onboard the station for 437 days and successfully returned to Earth!

Today I will tell you about biomedical experiments which are being currently conducted. The principal investigator in most of these experiments is the Institute for Medical and Biological Problems (IMBP).

An integral part of the experiments that are being conducted is this computer. It is called RSE MED. This is what might be called a smart assistant, which enables a cosmonaut to conduct medical experiments and accumulate data obtained in the course of experiment. This computer also stores instructions to be followed by a cosmonaut when conducting this or that experiment. As I promised earlier, today we start a series of broadcasts about specific experiments. Today I’m going to tell you about one of the experiments, which is called Sprut-2.

The purpose of this experiment is to study redistribution of fluids inside the human body under conditions of spaceflight. As you may know, in space flight, due to the lack of gravity, fluids inside the human body get redistributed. And thre is a lot of fluids there. A human body almost entirely consists of fluids. This is a very important experiment because for at least the first day after insertion into orbit, and sometimes even longer, a cosmonaut experiences some discomfort. Since blood flows into the upper part of the body, it’s only natural that all the bodily functions begin to operate in a different manner. After that, an adaptation occurs. That is, a person doesn’t experience these unpleasant sensations for the duration. It depends on the person: Some people adapt on the next day, some after a month. This experiment is conducted in order to somewhat speed up the adaptation (one of the objectives of the experiment is to improve preventive measures against adverse effects of zero gravity – Ed.). This experiment is based on the impedance monitoring method. Human body is a very good electrical conductor, that is, electrical current flows very easily through human body. Small currents are applied and by means of currents the amount of fluid is determined. Whether there is more of it or less (by sending a small current through the human body and by measuring voltages across various body parts, it is possible to calculate the resistance, and therefore, the amount of liquid in the body – Ed.).

Sprut-2 is a specific experiment where a few background measurements are taken before the cosmonaut leaves Earth, and several measurements are taken in flight.

Today we are talking about experiment Sprut-2. I’ve already explained the gist of the matter, and now let’s turn to the technical side of the issue. Let’s go into some detail. The experiment is conducted on an empty stomach, first thing in the morning. Before the experiment is run, the cosmonaut is weighed. During experiment, before breakfast, electrodes are attached. Since the experiment is designed for a certain number of times, I’m not going to put on all of them, I’m only going to tell you about them. There is a certain number of electrodes, which are put on the arms, on the head, and on the legs, are secured on the body and then the electrodes are attached to these small clips. These clips are connected directly to the Sprut device itself. This device, as I already mentioned, is hooked up to the smart assistant, the computer. This computer stores all the data collected by the device. After that these data are processed by the cosmonaut and sent to Earth.

That seems to be all that I can tell you in a nutshell about experiment Sprut-2. Later on we’ll be telling you about other experiments, which are no less important and interesting.

Рассказ Евгения Тарелкина о ме...
Рассказ Евгения Тарелкина о медицинском эксперименте «Спрут-2»





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