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

Light-sensitive tags make a paper book interactive

British researchers have presented an interactive book that is as close as possible to a regular paper book in appearance and reading experience. Photosensitive marks are built into its pages, and the cover is equipped with electronic filling, which is responsible for connecting the book with the gadget. This allows the book to detect the… Continue reading Light-sensitive tags make a paper book interactive

Copper ions in tap water turned out to be a catalyst in the synthesis of naldemedine

Chemists from Japan were unable to repeat the laboratory synthesis of the drug naldemedine under production conditions. This happened because the tap water in the laboratory contained more copper salts, which could speed up one of the stages of the synthesis. But in the end, chemists managed to optimize the process by adding a copper… Continue reading Copper ions in tap water turned out to be a catalyst in the synthesis of naldemedine

Absence of brain temperature fluctuations predicted likelihood of death from head injury

Patients who were in the intensive care unit with traumatic brain injury were more likely to die if they did not experience fluctuations in brain temperature during the day. In the journal Brain scientists also told about observing the brain temperature of healthy and sick people, about its fluctuations during the day, the menstrual cycle… Continue reading Absence of brain temperature fluctuations predicted likelihood of death from head injury

Actinobacteria Pseudonocardiaceae invade an ancient Chinese tomb

Biologists examined the microbiome of the Han tomb of Dahuting and found out through genetic analysis that it was dominated by actinobacteria of the family Pseudonocardiaceae. According to scientists, this is facilitated by mutually beneficial cohabitation with springtails, as well as fairly stable conditions inside the burial structure. This was reported in an article published… Continue reading Actinobacteria Pseudonocardiaceae invade an ancient Chinese tomb

Not PWM

In 2023, almost half of all smartphones will be equipped with OLED displays. Each pixel in such screens is a separate light source that works independently of the others. Thanks to this, they have good color rendering and image clarity. However, not everyone can use them comfortably. And pulse width modulation (PWM) is to blame.… Continue reading Not PWM

“The birth of a Soviet woman. Worker, peasant woman, pilot, former and others in art of 1917-1939″

When the Bolsheviks came to power in Russia at the beginning of the 20th century, they rejected previous religious, national, class, and gender norms. Women in the new society were assigned fundamentally different roles, which was reflected in proletarian art. In the book “The Birth of a Soviet Woman. Worker, Peasant, Pilot, “Former” and Others… Continue reading “The birth of a Soviet woman. Worker, peasant woman, pilot, former and others in art of 1917-1939″

Flapping your eyelashes

The flagella of sperm, the cilia of ciliates and the brush on the epithelial cells in the nose, which drives mucus with bacteria and dust away from the respiratory tract, are one and the same. A cunning molecular machine that helps eukaryotic cells move the fluid around them or move within it themselves. But scientists… Continue reading Flapping your eyelashes

I heard you

In contrast to the sound of the rain, the doctor persistently knocks his knuckles on the table, claps his hands, rings the bell and asks: “Are you in pain?” No, it doesn't hurt. Bizarre, sure, but not painful. I will leave the office into an unpleasantly ringing and squeaking world: the patter of children along… Continue reading I heard you

“Oh wonderful perishable world”

Under normal circumstances, we rarely encounter death in person and are much more likely to encounter it in books, movies, and video games. However, for some people, dealing with someone else's death is routine. In the book “O wondrous perishable world. When death is the business of life” (publishing house Mann, Ivanov and Ferber), translated… Continue reading “Oh wonderful perishable world”