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Chemistry
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Life Sciences - Chemistry - 11.12.2024
Biological diversity is not just the result of genes
A UNIGE study reveals how mechanics, linked to tissue growth, help generate the diversity of biological structures. How can we explain the morphological diversity of living organisms? Although genetics is the answer that typically springs to mind, it is not the only explanation. By combining observations of embryonic development, advanced microscopy, and cutting-edge computer modelling, a multi-disciplinary team from the University of Geneva demonstrate that the crocodile head scales emerge from the mechanics of growing tissues, rather than molecular genetics.
Chemistry - Environment - 21.11.2024
Previously unknown compound in chloraminated drinking water identified
Since the 1980s, its been known that a mysterious contaminant forms in chloraminated drinking water, but only now has a Swiss-American research team been able to identify the unknown product in US drinking water systems. A team of researchers from the United States and Switzerland have reported the discovery of a previously unknown compound in chloraminated drinking water.
Health - Chemistry - 12.11.2024
Synthetic cells emulate natural cellular communication
A research team from the University of Basel has succeeded in synthesizing simple, environmentally sensitive cells complete with artificial organelles. For the first time, the researchers have also been able to emulate natural cell-cell communication using these protocells - based on the model of photoreceptors in the eye.
Physics - Chemistry - 25.10.2024
A new spectroscopy reveals water's quantum secrets
For the first time, researchers have exclusively observed molecules participating in hydrogen bonds in liquid water, measuring electronic and nuclear quantum effects that were previously accessible only via theoretical simulations. Water is synonymous with life, but the dynamic, multifaceted interaction that brings H2O molecules together - the hydrogen bond - remains mysterious.
Chemistry - Physics - 10.10.2024
How catalysts remove dangerous nitrogen oxides
Catalysts belonging to the zeolite family help to remove toxic nitrogen oxides from industrial emissions. Researchers at the Paul Scherrer Institute PSI have now discovered that their complex nano porous structure is crucial. Specifically, individual iron atoms sitting in certain neighbouring pores communicate with each other, thereby driving the desired reaction.
Materials Science - Chemistry - 10.10.2024
A stiff material that stops vibrations and noise
Materials researchers have created a new composite material that combines two incompatible properties: stiff yet with a high damping capacity. A compressor hums, an air conditioning system rattles, a railway carriage chassis clatters, sending reverberations through its passengers. Vibrations are not only annoying but can also be harmful.
Environment - Chemistry - 10.10.2024
How personal care products affect indoor air quality
An EPFL study has revealed the impact of five common personal care products when they're used in enclosed spaces. Surprisingly, when they come into contact with ozone, the products spark chemical reactions generating new air pollutants. The personal care products we use on a daily basis significantly affect indoor air quality, according to new research by a team at EPFL.
Life Sciences - Chemistry - 08.10.2024
The secret strength of our cell guards
A team from the University of Geneva and EPFL has demonstrated how Hsp70 chaperone proteins help proteins move within cells. Proteins control most of the body's functions, and their malfunction can have severe consequences, such as neurodegenerative diseases or cancer. Therefore, cells have mechanisms in place to control protein quality.
Chemistry - Environment - 13.09.2024
New method in the fight against forever chemicals
Researchers at ETH Zurich have developed a new way to break down a dangerous subgroup of PFAS known as PFOS. With the help of nanoparticles and ultrasound, piezocatalysis could offer an effective alternative to existing processes in the future. What do firefighting foam, non-stick cookware, water-repellent textiles and pesticides all'have in common? They all contain perand polyfluoroalkyl substances, or PFAS - human-made chemicals that don't break down naturally.
Chemistry - Pharmacology - 02.09.2024
New pharmaceutically active substances from billions of newly combined molecules
Pharmaceutical researchers often find new pharmaceutically active substances only by sifting through large collections of chemical compounds. Chemists at ETH Zurich have now made critical progress on a specific process for generating and searching these collections. Nowadays, there's lots of buzz about spectacular new medical treatments such as personalised cancer therapy with modified immune cells or antibodies.
Life Sciences - Chemistry - 02.09.2024
AI tool maps out cell metabolism with precision
Scientists at EPFL have developed an AI tool that creates detailed models of cellular metabolism, making it easier to understand how cells function. Understanding how cells process nutrients and produce energy - collectively known as metabolism - is essential in biology. However, analyzing the vast amounts of data on cellular processes to determine metabolic states is a complex task.
Chemistry - 28.08.2024
Chemical plastics recycling is ready to go
Scientists around the world can now go full throttle in their research into chemical plastics recycling. Researchers at ETH Zurich have laid important foundations for this by showing that it's all'about the stirring. Hundreds of millions of tonnes of plastic waste are generated worldwide every year.
Physics - Chemistry - 13.08.2024
AI enhances chemical analysis at the nanoscale
Scientists have developed an AI-based technique to improve chemical analysis of nanomaterials, overcoming challenges of noisy data and mixed signals. "Nanomaterials" is a broad term used to describe chemical substances or materials in which a single unit is sized between 1 and 100 nanometers (a nanometer is a billionth of a meter).
Environment - Chemistry - 08.08.2024
Sources of smog in Beijing identified
An international study led by researchers at the Paul Scherrer Institute PSI has used a new method to identify the various sources of aerosols that create smog in Beijing. A number of studies have estimated that air pollution is responsible for several million deaths worldwide every year. In order to take appropriate measures to keep the air clean, it is important to know where the pollutants come from.
Life Sciences - Chemistry - 07.08.2024
A new AI approach to protein design
Researchers a novel AI-driven model designed to predict protein sequences from backbone scaffolds, incorporating complex molecular environments. It promises significant advancements in protein engineering and applications across various fields, including medicine and biotechnology. Image caption: Schematic representation of sequence prediction with CARBonAra.
Astronomy / Space - Chemistry - 30.07.2024
Astronomers clarify how organic macromolecules are formed
An international team of researchers led by the University of Bern has used observation-based computer modelling to find an explanation for how macromolecules can form in a short time in disks of gas and dust around young stars. These findings could be crucial for understanding how habitability develops around different types of exoplanets and stars.
Life Sciences - Chemistry - 24.07.2024
Under pressure: how cells respond to physical stress
Scientists have discovered how yeast cells sense physical stresses on the membranes that protect them. Cell membranes play a crucial role in maintaining the integrity and functionality of cells. However, the mechanisms by which they perform these roles are not yet fully understood. Scientists from the University of Geneva , in collaboration with the Institut de biologie structurale de Grenoble (IBS) and the University of Fribourg (UNIFR), have used cryo-electron microscopy to observe how lipids and proteins at the plasma membrane interact and react to mechanical stress.
Chemistry - Environment - 09.07.2024
Mining rare earth metals from electronic waste
Researchers are developing a process inspired by nature that efficiently recovers europium from old fluorescent lamps. The approach could lead to the long-awaited recycling of rare earth metals. Rare earth metals are not as rare as their name suggests. However, they are indispensable for the modern economy.
Materials Science - Chemistry - 05.07.2024
Innovative battery design: more energy and less environmental impact
A new electrolyte design for lithium metal batteries could significantly boost the range of electric vehicles. Researchers at ETH Zurich have radically reduced the amount of environmentally harmful fluorine required to stabilise these batteries. Lithium metal batteries are among the most promising candidates of the next generation of high-energy batteries.
Materials Science - Chemistry - 25.06.2024
Gold membrane coaxes secrets out of surfaces
Using a special wafer-thin gold membrane, researchers have made it significantly easier to study surfaces. The membrane makes it possible to measure properties of surfaces that are inaccessible to conventional methods. "Surfaces were invented by the devil" - this quote is attributed to the theoretical physicist Wolfgang Pauli, who taught at ETH Zurich for many years and in 1945 received the Nobel Prize in physics for his contributions to quantum mechanics.