Heterogeneous catalyst reduces the cost of synthesis of cyclic polymers

Chemists from the USA, South Korea, Hungary and Switzerland have developed a heterogeneous ruthenium-based catalyst for the synthesis of cyclic polymers from cyclopentene. They also managed to come up with a reaction installation that makes it easy to separate the catalyst from the reaction products. The study was published in Nature Chemistry. Linear polymers containing… Continue reading Heterogeneous catalyst reduces the cost of synthesis of cyclic polymers

In Norway, a repaired arrow from an unlucky hunter was found that had melted from under the ice.

Archaeologists have discovered in Norway the shaft of a medieval arrow, the broken shank of which was repaired by a hunter using sinew. However, apparently, then he was unsuccessful again and his shot missed the target, burying the arrow for several centuries under snow and ice. As the Secrets of the Ice project team reports… Continue reading In Norway, a repaired arrow from an unlucky hunter was found that had melted from under the ice.

The burials of eight male warriors and a female priestess from the era of early nomads have been excavated in Kazakhstan.

Archaeologists excavated three mounds from the era of early nomads in the West Kazakhstan region, which contained the remains of ten people who died at the end of the 6th – beginning of the 5th century BC. The burial ritual and accompanying grave goods suggested that the graves contained eight male warriors, a teenage girl… Continue reading The burials of eight male warriors and a female priestess from the era of early nomads have been excavated in Kazakhstan.

Additional proteins have been found in bacteria to fight viruses and bacteriophages

A group of scientists from the Massachusetts Institute of Technology discovered immune system proteins in prokaryotes that can detect not only viral DNA, but also bacteriophage proteins. Such proteins recognize a pathogen in one region, and after that a fragment is activated in them, which causes an inflammatory response. Such immune systems are known in… Continue reading Additional proteins have been found in bacteria to fight viruses and bacteriophages

The seal of Vladimir Monomakh was found near Kaliningrad

Archaeologists reported new finds made during excavations of the medieval Prussian settlement of Privolnoye-1, which is located in the Kaliningrad region. Among them were weapons and household items, jewelry and costume details. But what stands out most is the seal of Vladimir Monomakh, testifying to contacts between Ancient Russia and the Prussians, which went beyond… Continue reading The seal of Vladimir Monomakh was found near Kaliningrad

Music choice was associated with decreased pain intensity

The relationship between pain relief and activity in choosing music was shown in natural conditions – previously this statistical relationship was tested only in laboratory experiments. The authors of the article published in PLoS One, conducted an experiment with 286 adults who rated how the intensity and unpleasantness of pain changed after listening to a… Continue reading Music choice was associated with decreased pain intensity

Wrecks of a Spanish treasure galleon found near the Bahamas

Underwater archaeologists have explored the site of the wreck of the Spanish galleon Nuestra Señora de las Maravillas, which sank near the Bahamas more than 350 years ago. Among the wreckage of the ship, scattered over a distance of more than 13 kilometers, they found valuable personal belongings of the ship's crew members, as well… Continue reading Wrecks of a Spanish treasure galleon found near the Bahamas

A fragment of an iron face mask from a Batavian horseman was found in Germany.

Archaeologists have discovered a heavily rusted metal plate in western Germany. It turned out to be part of a face mask attached to an iron helmet worn by a Batavian horseman in the 1st century AD. This was reported by the press service of the city of Krefeld. The Batavians were a tribe of West… Continue reading A fragment of an iron face mask from a Batavian horseman was found in Germany.

Russia will leave the ISS after 2024

News updated: In the fifth to eighth paragraph of the news, information has been added about a new statement by Roscosmos General Director Yuri Borisov regarding the timing of Russia’s withdrawal from the ISS, made on Friday, July 29. Russia will withdraw from the ISS project after 2024, directing its main efforts to the creation… Continue reading Russia will leave the ISS after 2024

Paleogeneticists read the oldest genome of a domestic horse from America

Paleogeneticists have read the oldest genome of the domestic horse from the Americas. They were able to sequence DNA from a tooth found in an early colonial Spanish town in Haiti. Scientists have confirmed past findings that the first domestic horses of the New World originated from the Iberian Peninsula. This was reported in an… Continue reading Paleogeneticists read the oldest genome of a domestic horse from America