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43 notícias encontradas para "molecule"
Special relativity can warp chemical bonds – now we’ve seen it happen
An experiment with a charged molecule of bismuth and carbon reveals how effects from Albert Einstein’s special relativity reshape the standard understanding of chemical bonds
Sugar molecules found in interstellar space for the first time
Researchers have long suspected early life may have been helped by sugars brought to Earth by asteroids – now a sugar found in raspberries has been spotted in a cosmic cloud nearly 27 light years away
Foto: turek / Pexels
Controlling ice crystal growth using polymer nanoparticles
Ice formation can damage biological samples, tissues and materials during freezing and thawing. In nature, specialized molecules known as ice-binding proteins prevent ice crystals from growing too large, helping organisms survive in extreme cold. Scientists have long tried to rep
Ultrafast X-rays allow researchers to 'watch' how molecules rearrange during a chemical re
Since the 1980s, researchers have sought to use laser light to control chemical reactions relevant to photochemistry, catalysis and light-responsive materials. But this technique, known as coherent control, has a blind spot: There has been no way to directly see the molecules in
Foto: MART  PRODUCTION / Pexels
Ultra-precise technology can count damaged DNA fragments
The Korea Research Institute of Standards and Science has developed an ultrasensitive immunoassay-based analytical platform that can detect and quantify trace amounts of "Small Excised Damaged DNA (sedDNA)" fragments generated during cellular DNA repair. This technology enables h
Metal hydride molecule trapped with laser light opens path to ultracold hydrogen
Controlling and trapping molecules, units of a substance consisting of two or more chemically bound atoms, with laser light is significantly more challenging than trapping individual atoms. This is because molecules exhibit more complex vibrational and rotational dynamics that ma
Secrets of how we see color revealed at the molecular level
A global team has cracked a decades-old mystery, revealing the atomic structures of the molecules in our eyes that allow us to see colors. "To understand how we detect light and perceive colors, we need to know the exact structure of light-sensitive molecules in our eyes," said T
Foto: Michelangelo Buonarroti / Pexels
Screen reveals new proteins that control RNA processing
Researchers at the University of California San Diego have developed a large-scale screening approach that identifies proteins controlling a fundamental step in gene expression known as alternative polyadenylation (APA). APA determines where an RNA molecule is cut and finished be
ROS-producing enzymes guide plant cell division and tissue patterning, gene-editing study
ROS-producing enzymes guide plant cell division and tissue patterning, gene-editing study
Reactive oxygen species (ROS) produced naturally during cellular metabolism often cause oxidative damage to cells. However, these molecules also play an important role in normal cellular signaling. While ROS are established as essential signaling molecules in various organisms, t
Foto: Steve A Johnson / Pexels
Clean crystal surface lets single molecules hit ultimate quantum limit
Scientists at the Max Planck Institute for the Science of Light (MPL) have developed a technique for interrogating molecules on surfaces with spectroscopic precision, thereby reaching the ultimate quantum limit for the first time. With their findings, published in Science, the re
Lithium-doped carbon nanorings show promise for next-generation optical devices
Nonlinear optical materials are essential for advanced photonics and laser technologies, but researchers are still searching for ways to optimize organic, carbon-based alternatives. Using computational modeling, scientists demonstrated that adding a lithium atom to the outside of
Nanopore technology identifies proteins molecule by molecule
Proteins are responsible for most functions in the human body. However, their analysis, which is essential for understanding diseases, developing drugs and discovering new biomarkers, remains highly complex. Using a technology called "nanopore detection," a team at the University