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
German physics teachers made a universal spectrometer in the Czerny-Turner scheme using LEGO constructors and scrap materials. The authors showed that it can be used to study the spectra of atomic emission, transmission, reflection and fluorescence. Reconfiguring the device for different tasks takes a few minutes, and the total cost of the device does not… Continue reading Spectrometer based on LEGO constructor will make studying physics cheaper
British climatologists studied the distribution of smoke in the stratosphere after bushfires in Australia in 2019–2020. They found that black carbon particles in the smoke increased the average temperature in the lower stratosphere by 0.7 degrees worldwide, with temperatures rising by three degrees over Australia. Additionally, the reaction of smoke and ozone has caused the… Continue reading Bushfire smoke raised temperatures in Australia by three degrees
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
Archaeologists have discovered the grave of a woman 20–25 years old in the north-west of the Stavropol Territory. The accompanying grave goods and funeral rites made it possible to attribute this find to the Western Koban culture and date it to the second half of the 8th century BC. Among the artifacts found, scientists identified… Continue reading A burial of a woman from the Koban culture with a bronze mirror was found in the Stavropol region
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
Chemists from the USA have found a cobalt-based cocatalyst, which, together with a tungsten-based catalyst, makes it possible to effectively produce ammonia from nitrogen under electrolysis conditions. Thanks to this combination of catalysts, the process was able to be carried out at a relatively high potential of −1.35 volts and with a current efficiency of… Continue reading An organometallic cocatalyst helped produce ammonia by electrolysis
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.
At the time of the construction of the Giza pyramids, the water level in the Nile allowed the filling of an artificial reservoir near the construction site so that the Egyptians could transport materials from the quarries directly to the construction site. This was confirmed by scientists from Egypt, China and France, who examined sediment… Continue reading The water level in the Nile allowed the Egyptians to transport stone to the site of the pyramids.
Paleontologists analyzed samples of primitive ornithischians Lesothosaurus diagnosticus, found together in South Africa, and concluded that ornithischian dinosaurs lived in packs as early as the Lower Jurassic. This is the second earliest example of the social lifestyle of ornithischians. The study was published in the journal Palaeontology. Lesothosauruses were small omnivorous dinosaurs that lived in… Continue reading Ornithischian dinosaurs began living in packs already in the Jurassic period