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2024

Новости за 26.06.2024

Sciencedaily.com 

Brain's 'escape switch' controlled by threat sensitivity dial

Neuroscientists have discovered how the brain bidirectionally controls sensitivity to threats to initiate and complete escape behaviour in mice. These findings could help unlock new directions for discovering therapies for anxiety and post-traumatic stress disorder (PTSD).

Sciencedaily.com 

A chip-scale Titanium-sapphire laser

With a single leap from tabletop to the microscale, engineers have produced the world's first practical Titanium-sapphire laser on a chip, democratizing a once-exclusive technology.

Sciencedaily.com 

El Niño forecasts extended to 18 months with innovative physics-based model

As more attention is drawn to possible severe weather around the world scientists are looking to improve planning for possible droughts, floods and other scenarios. A team of researchers created a new tool that will allow forecasting of El Nino Southern Oscillation by up to 18 months.

Sciencedaily.com 

Unlocking the world of bacteria

Bacteria possess unique traits with great potential for benefiting society. However, current genetic engineering methods to harness these advantages are limited to a small fraction of bacterial species. A team has now introduced a novel approach that can make many more bacteria amenable to genetic engineering. Their method, called IMPRINT, uses cell-free systems to enhance DNA transformation across various bacterial strains.

EastBayTimes.com 

Feds charge 5 in attempt to bribe Minnesota juror

The bribe attempt, which U.S. Attorney Andrew Luger called a "chilling attack on our justice system," brought renewed attention to the trial of seven Minnesota defendants accused of coordinating to steal more than $40 million from a federal program that was supposed to feed children during the coronavirus pandemic.

Sciencedaily.com 

The on-and-off affair in DNA

Researchers have discovered that in thale cresses histone H3 lysine-9 (H3K9) methylation, conventionally thought to be a mark of turning off gene transcription, can also turn on gene expression via the interactions of two other proteins and histone marks. The molecular mechanisms demonstrate that rather than functioning as a simple 'off switch,' H3K9 methylation is more like a 'dimmer switch' that fine-tunes DNA transcription. The discovery suggests there might be similar mechanisms in other organisms, too.




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