September 11, Daily science and technology trend

  • 2020-09-11
  • 38

1. Researchers from ITMO University have created a drug delivery system based on hollow particles of calcium carbonate, resembling the shape of the bacterium Escherichia coli. The microcapsule is approximately five micrometers in length. It circulates freely through the blood vessels to the site of infection, protecting the antibiotic under a thick coating of calcium carbonate.



2. Nickel-based compounds capable of effectively fighting cancer cells were created for the first time in the world by an international team of scientists with the participation of Tyumen State University. Nickel, unlike platinum, can form a much richer molecular geometry, which will make it easier to improve the drug, fighting both the growing resistance, that is, the resistance, of cancer cells, and with negative side effects.



3. Russian and Belarusian physicists have proposed a way to master the hard-to-reach range on the electromagnetic spectrum. Scientists have found that lasers based on cadmium, mercury and tellurium can be a source of electromagnetic radiation in the 6-10 THz range, which is called the terahertz gap. Conventional lasers are unable to do this due to too strong absorption of radiation.



4. NUST MISIS material scientists presented antibacterial nano-coatings based on boron nitride, which are highly effective against microbial pathogens - up to 99.99%. The researchers went further and filled the micro-pores of a thin coating of boron nitride with the antibiotic gentamicin. The result is an antibacterial effect due to the complete release of the drug in a short initial period of time. Moreover, its dose was an order of magnitude less than with a conventional injection.



5. Researchers from Australia, Belgium, Germany and Russia studied the brain structure of 11 Russian cosmonauts who spent an average of 171 consecutive days on the ISS. In particular, it turned out that as a result of being in zero gravity for a certain time, the distribution of white and gray matter changes, and the ventricles of the brain increase, in which there is more cerebrospinal fluid. According to experts, in this way the nervous system adapts to weightlessness and increases the load on those areas of the brain that are responsible, among other things, for controlling movements.



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