Chemists have found ideal conditions for the hydrogen borrowing reaction

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

Ozonation of the air caused the skin to create an oxidative field around a person

Chemists from Germany, the USA and Denmark have found that substances secreted by human skin lead to the formation of an oxidative field around it. Scientists placed four people in a sealed mock-up office and began ozonizing the air to a level close to the maximum permissible concentrations. The experiment showed that ozone interacts with… Continue reading Ozonation of the air caused the skin to create an oxidative field around a person

MOXIE received 50 grams of oxygen from the Martian atmosphere in 9 hours

The team of the MOXIE experiment to obtain oxygen from the Martian atmosphere presented the results of its work on Mars for 2021. The device installed on the Perseverance rover worked for a total of almost 9 hours, during which time it generated 50 grams of oxygen suitable for human use. Thus, on the basis… Continue reading MOXIE received 50 grams of oxygen from the Martian atmosphere in 9 hours

Compression socks protected the intestines of marathon runners from damage

Australian sports doctors, with the participation of fifty runners, studied how compression socks affect the effects of running on the digestive system. After the marathon, those who ran in knee socks had lower levels of a protein marker of small intestinal damage. In an article published in The Journal of Strength and Conditioning Researchthe authors… Continue reading Compression socks protected the intestines of marathon runners from damage

Supernova 1181 fits the model of the merger of two white dwarfs

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

Scientists have grown another batch of artificial mouse embryos

Embryologists again raised mouse embryos outside the mother's body. Recently, a group of Israeli scientists conducted a similar experiment and raised baby mice to the eighth day of development. Now the British have obtained approximately the same result – and at the same time verified that the Israeli embryo culture system ex utero works. The… Continue reading Scientists have grown another batch of artificial mouse embryos

Coordination polymers caused water to absorb oxygen

Chemists from the USA have developed several microporous materials capable of forming stable colloidal solutions in water and in this form absorbing carbon dioxide and oxygen. To do this, the scientists used compounds with a hydrophilic outer surface and a hydrophobic pore surface. This made it possible to increase the ability of water to dissolve… Continue reading Coordination polymers caused water to absorb oxygen

Butyrate saved mice from peanut allergies

Butyrate, which is produced by the intestinal bacteria Clostridium, may help people with severe peanut allergies. This was discovered by scientists who introduced polymer micelles with butyrate into the intestines of mice and relieved them of allergies. The authors believe that such micelles can also help with reactions to other food proteins. A preprint of… Continue reading Butyrate saved mice from peanut allergies

Machine learning predicts the thickness of lead's neutron skin

Physicists have calculated the thickness of the neutron shell in the core of the lead-208 isotope – it is in the range from 0.14 to 0.20 femtometers. To do this, scientists combined calculations from first principles, statistical methods and machine learning. This scheme works faster than direct simulations and in the future it can be… Continue reading Machine learning predicts the thickness of lead's neutron skin

Planetologists have found presolar grains in the soil of the Ryugu asteroid

Planetologists presented the results of a search for presolar grains in soil samples from the Ryugu asteroid and two carbonaceous chondrite meteorites. They discovered several dozen grains with an anomalous isotopic composition of oxygen, carbon and silicon, which were formed before the birth of the Solar System, and also confirmed the idea of ​​a connection… Continue reading Planetologists have found presolar grains in the soil of the Ryugu asteroid