Neurodegeneration can occur more quickly if nerve cells lack retromer proteins, which are responsible for breaking down toxic tau protein. This conclusion was reached by scientists who observed genetically modified fruit flies that produced human tau protein in 39 neurons of the eye. Tau protein itself already caused the death of nerve cells, and the… Continue reading Poor protein utilization contributes to neurodegeneration
Chemists from Russia studied the hydrogen borrowing reaction necessary for the formation of carbon-nitrogen bonds. They found that it often does not require a catalyst at all, and also developed recommendations for successfully carrying out the reaction in the laboratory. The study was published in the journal Journal of Catalysis. Organic compounds containing an NH… Continue reading Chemists have found ideal conditions for the hydrogen borrowing reaction
Low-temperature phase transitions in ferromagnets are characterized by destruction of the domain structure. In an article in Nature physicists write that for a theoretical description of the dynamics of such transitions, it is necessary to take into account not only microscopic, but also mesoscale symmetry. This discovery indicates the possibility of the existence of non-classical… Continue reading Physicists have proven the importance of the mesoscale for quantum phase transitions
Small breaks during the workday help you feel more alert, less tired and more productive. This was found by Romanian psychologists who conducted a meta-analysis of 22 studies published over the past 30 years. Article published in the magazine PLoS ONE. In modern culture, work and personal space no longer have clear boundaries, and more… Continue reading Short breaks during the day helped workers cope with fatigue
Astronomers have found for the first time an example of the result of the merger of two galaxies, where the merger process itself inhibited the formation of new stars, throwing out most of the cold gas reserves from the galaxies. In the case of SDSS J1448+1010, about 47 percent of the material needed to form… Continue reading A galaxy merger could extinguish a burst of star formation.
Biochemists from the USA and Portugal have discovered how in vertebrate cells yellow carotenoid pigments are converted into red ketocarotenoids, which are responsible for the red coloration of some vertebrates. It turned out that this transformation requires two enzymes, and the third, auxiliary, plays the role of a carrier of reacting molecules. The study was… Continue reading Biochemists have discovered the mechanism behind the red coloration of birds
The James Webb Infrared Space Telescope has reliably discovered a number of organic molecules, including complex ones, in the composition of ice particles in the core of the very young protovesche IRAS 15398−3359. In addition, the telescope examined the structure of one of the outflows of matter from the protostar, which consists of four shells.… Continue reading James Webb finds organic molecules in icy particles around a very young protostar
Scientists from the USA and Cyprus have found that the gender of the experimenter can influence the results of medical experiments on mice. It turned out that the smell of men causes stress in animals and a desire to escape from its source. But if a man injects a mouse with an antidepressant, its effect… Continue reading The smell of a woman prevented an antidepressant from calming mice
The initial height of the tsunami caused by the eruption of the Hunga Tonga Hunga Ha'apai volcano on January 15, 2022 was 90 meters. These conclusions were reached by researchers from the UK, New Zealand, Croatia and Japan, who analyzed changes in atmospheric pressure and sea level and created nine models of a volcanic tsunami.… Continue reading The January eruption of the Tonga volcano triggered a 90 meter high tsunami.
Astronomers from six countries have confirmed the idea that supernova SN 1181 AD, which exploded in 1181, represents the second remnant of a rare type of Iax supernova confirmed in the Milky Way. It is assumed that two carbon-oxygen white dwarfs or a massive carbon-oxygen dwarf with a helium companion merged without the resulting white… Continue reading Supernova 1181 fits the model of the merger of two white dwarfs