Most of us don't think about whether the bacteria we bring to our shoes from the street are dangerous. But someone thinks they are dangerous. And these people are right. But not enough to rush to wash shoes with antibacterials every time we visit the street.
As it turned out, for most adults, such bacteria brought from the street on the soles of the shoes do not pose a threat of bacterial contamination. This has been proven in research by Lisa Kochar, a professor at Quinnipek University. The University is located in Connecticut.
How many bacteria on the floor of a public toilet
Liza, after studying the bacteria brought into the apartments from the street, made some calculations and came to a certain conclusion. It turned out that there are up to 2 million pathogens per square inch on the floor of a regular public toilet. One inch is 6.45 square centimeters.
"Just think about these figures whenever you put your bag on the floor in the public toilet and then take it to the living room and put it on the kitchen table," she warned.
To be honest, I was surprised at what the American professor said. Maybe, at first sight, the Americans have such clean toilets that they put their bags on the floor. If I use a public toilet, I only hang my bag on the hook. If I don't have one, at least I hang it on a pen.
And who of the normal people will come to mind after the bag has been on the floor in the public toilet, put it on the kitchen table? Well, except for the Americans. For example, I even put a ladies' bag on the table, even though I never put it on the floor anywhere, I don't put it on the table at home.
Salmonella from snakes, turtles, and frogs
But I was distracted. Let's get back to the research, or rather their conclusions. According to Liza Kochara, there are other sources of pathogenic bacteria in the living quarters. These are wet sponges for washing dishes. Salmonellosis can also be caused by pets such as snakes, turtles, and frogs. Well, such pets are not so common in Russian homes. Although... although I keep a red-earned turtle in the aquarium. She is already eight years old, and I did not catch salmonellosis somehow.
According to researchers, one should be more careful also with the keyboard of ATMs and handles of hoses of filling stations. They are a serious source of all kinds of pathogenic bacteria.
Bacteria stimulate the development of the immune system
By the way, according to another American professor, Jack Gilbert of the University of California, bacteria from the street are even useful. According to his theory, bacteria from the street stimulate the development of the immune system.
Wash your hands before you eat and more
In short, you're afraid of disease-causing bacteria, wash your hands more often. And not only before eating, as always advised us as a child.
In general, it seems that American scientists have nothing to do. They research to broadcast banal truths afterward. Whether it's our Russian scientists who...
Developed a photon nano-vacuum cleaner
Well, of course, not the nano-vacuum cleaner itself, but its concept. And not alone, but in cooperation with scientists from other countries. Namely from Israel and China. Scientists at Tomsk Polytechnic University worked on the concept from us. Namely, the departments of electronic engineering. From China, specialists from Jilin University, from Israel, from Ben-Gurion University. It is assumed that such a device will be useful in the future to create perfectly clean rooms.
Nano-vacuum cleaner is designed to clean the chips from nanoparticles
Biomedical research is already being done today by chip-based laboratories. The chip can range in size from a few square millimeters to square centimeters. To increase the accuracy of research, it is necessary to clean both the chip itself and the air in the test room from foreign nanoparticles.
This is not the case at the moment
No one has nanoparticles in the space at the moment. And there is no doubt that it will be needed. Science goes further and further into space, under the water, into the tiniest components of our lives, which are not visible under the microscope. Thus, the size of the nanoparticles ranges from one to a maximum of 100 nanometers. And to understand to what extent the smallest particle of this nanometer, imagine that in one centimeter 10 million nanometers.
How the future device works
The nano vacuum cleaner is a microparticle made of dielectric, i.e. a substance that does not conduct electricity, in the form of an equilateral cuboid. In a cuboid, there are recesses or even through apertures of nanosize. When a nanoparticle is exposed to a certain radiation, such as a laser, pressure arises. It is directed towards the inside of the cuboid so that the nanoparticles are drawn in. Not a vacuum cleaner, where the suction force is created by air.
Scientists only have to experiment.