A biophysicist from RUDN University and his colleagues modelled the molecular dynamics of growth of microtubules, the most important elements of cell activity. The researchers have built a model for the interaction of microtubule subunits, which takes into account their internal and external connections. The results will help form a more complete model of the dynamic instability of microtubules. It will allow choosing chemical agents for the treatment of certain diseases, including neoplasms and neurodegenerative pathologies.
At the Peoples' Friendship University of Russia from May 18 to 22, 2020, a school was held at the Faculty of Physical, Mathematical and Natural Sciences of RUDN University entering the magistracy “Laws of physics - laws of nature”.
A RUDN University chemist has created a catalyst for wastewater treatment that removes paracetamol – one of the most commonly prescribed antipyretics. This medicine is excreted from the body through the kidneys and enters the sewage, where it does not decompose and can pose a threat to people and the environment. The chemist managed to create a catalyst based on silver sulfide, zinc oxide, and graphene oxide to decompose paracetamol under light irradiation. The study is published in the journal Separation and Purification Technology.
For the first time, RUDN University chemists obtained polymer nanoparticles from chitosan derivatives with antibacterial activity at the level of modern antibiotics. Chitosan is a polyaminosaccharide, which is obtained from chitin and is actively used as a biological additive and cosmetics, but the antibacterial properties of chitosan are expressed quite poor, mainly due to its low solubility in water. Chemical modification of chitosan allows obtaining water-soluble chitosan derivatives with increased antibacterial activity. In this study, chitosan derivatives with extremely high antibacterial activity and significant solubility in water were obtained. To synthesize chitosan derivatives, from which highly active nanoparticles are formed, scientists have developed a new approach based on a combination of click chemistry and ultrasonic processing. With the help of the proposed approach, it will be possible to obtain other polysaccharide particles with antibacterial activity. The article is published in the International Journal of Biological Macromolecules.
Postgraduate student Peter Harin and Master students Elena Makeeva and Valeria Savich from the Institute of Applied Mathematics and Telecommunications of the RUDN University underwent a one-week internship in Austria at Johannes Kepler Universität Linz.
RUDN University mathematician for the first time proved the theorem of existence and uniqueness of solutions of the Zakharov-Kuznetsov equation in a strip. Such theorems are very rare for partial differential equations. The new results can be applied, for instance, in astrophysics, in describing the propagation of plane waves in plasma. The article is published in the journal Nonlinear Analysis: Real World Applications.
A RUDN University chemist synthesized fluorescent compounds with "merry-go-round" molecules that can be used to create economical displays with organic LEDs (OLED). The nucleus of these molecules is a triangle of silver or copper atoms, and organic elements are bound to it through phosphorus atoms and are able to rotate around them. This molecular geometry doubled the quantum yield of luminescence to 41 percent. In modern OLED screens, this figure is 20 percent. The article is published in Inorganic Chemistry.
A chemist from RUDN University has developed a tin silicate catalyst for the production of esters — flavours, plasticisers, and biofuel components. Unlike existing catalysts, the new material can be made active again and reused. The results are published in the journal Microporous and Mesoporous Materials.
RUDN University mathematician proposed a method for calculating the optimal trajectory of spacecraft with electric propulsion, whose thrust is thousands times less than chemical one has, but it is able to work for years. These motors are best suited for interplanetary missions. Mathematicians calculated the flight parameters of the space probe with such motor to Mars and Mercury. The paper is published in the journal Cosmic Research.
RUDN University chemists have discovered a unique method for making plastic film based on natural polysaccharides. It simultaneously has antioxidant, antimicrobial and barrier properties, and protects the content against ultraviolet exposure. Using the film to package and coat food products will considerably extend their shelf life.
October 29 at the Faculty of FMiEN a Job Fair for students of mathematical and IT specialties was held. The organizer of the event was - Mathematical Institute after S.M. Nikolsky.
Students of the Faculty of Science met with a representative of an international group of companies, Ivan Okhapkin.