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94 notícias encontradas para "chemical"
Tiny water droplets transmutate aniline into pyridine in ambient and catalyst-free conditi
Tiny water droplets transmutate aniline into pyridine in ambient and catalyst-free conditi
Aniline can now be transformed into pyridine without adding any catalysts, oxidants or toxic reagents. In a recent study published in the Journal of the American Chemical Society, researchers achieved skeletal editing, involving the reorganization of the carbon-nitrogen bonds wit
Admin Recifes 15/07/2026 1
New electrocatalyst helps turn polluted water into fertilizer and polymers
A new electrochemical system simultaneously converts plant-derived materials and nitrate pollutants into valuable industrial chemicals. Developed by Tohoku University researchers, the system provides a more sustainable way to manufacture chemicals while helping address wastewater
Admin Recifes 15/07/2026 0
Natural hallucinogens may have evolved as ecological tools, not chemical accidents
Natural hallucinogens, such as psilocybin, mescaline, N,N-dimethyltryptamine (DMT) and related compounds, have generally received attention for their effects on human perception, emotion and cognition. Recently, interest in these compounds has expanded to include their potential
Admin Recifes 15/07/2026 0
Fossil fuel price surges can lead to worse air quality, study finds
Researchers find increases in toxic chemical in the air in some areas as people switch to cheaper wood burningNew research shows that the unreliability of fossil fuel supply chains and consequential price surges can lead to deterioration in air quality as people change their cons
Admin Recifes 15/07/2026 0
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
Admin Recifes 15/07/2026 0
When a pool or pond turns green with algae, don't reach for chemicals—nature has better so
When a pool or pond turns green with algae, don't reach for chemicals—nature has better so
When the Lincoln Memorial Reflecting Pool turned green with algae just days after a US$15 million renovation, the U.S. government scrambled for chemicals and expensive technical solutions to fix the iconic landmark.
Admin Recifes 15/07/2026 0
Chemically primitive galaxy from 13 billion years ago reveals record-low oxygen
An international team of astronomers has used the James Webb Space Telescope (JWST) and a natural phenomenon known as gravitational lensing to achieve a definitive characterization of LAP1-B, an ultra-faint galaxy from 13 billion years ago. Expanding upon initial detections, this
Admin Recifes 15/07/2026 1
Why Ho Chi Minh City's pollution sources may have been misread for years
Biomass burning, including the combustion of wood, charcoal and agricultural residues, is a major source of PM2.5, a fine particulate matter that degrades air quality and poses risks to human health. Much of this pollution is tracked by looking at levels of levoglucosan, a chemic
Admin Recifes 15/07/2026 1
Research team cuts cost of building reconstituted cell-free systems by 95%
Research team cuts cost of building reconstituted cell-free systems by 95%
A research team led by Professor Joongoo Lee in the Department of Chemical Engineering at POSTECH (Pohang University of Science and Technology) has developed an automated, modular method for assembling reconstituted cell-free systems, which are test-tube systems that can produce
Admin Recifes 15/07/2026 0
Coastal and estuarine carbon removal technique may backfire when pushed too far
Scientists investigating a proposed way to remove carbon dioxide from the atmosphere using seawater have found that adding too much alkalinity to neutralize acids can trigger chemical reactions that undermine the process.
Admin Recifes 15/07/2026 0
Burned-home soils showed uneven lead, arsenic contamination after Los Angeles wildfires
A chemical analysis of residential soils and ash around California homes burned by the Eaton and Palisades wildfires in early 2025 revealed wide variation in contamination by potentially harmful elements, including lead, according to a study published in Environmental Science and
Admin Recifes 15/07/2026 0
Nanopattern method unlocks precise control of disorder for wave-guiding devices
A research team has developed a methodology to precisely design and control the "degree of disorder" in nanopattern arrays using metal-infiltrated block copolymer (BCP) thin films. The work was led by Professor So Youn Kim of the Seoul National University College of Engineering D
Admin Recifes 15/07/2026 0
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