news 2023

Breakthrough Classifies Types of Arrhythmia Recordings With Precise Aleatoric and Epistemic Uncertainty - A team comprising CEA-Leti, CEA-List and two CNRS laboratories has published a new paper in Nature Communications presenting the first complete memristor-based Bayesian neural network implementation for a real-world task-classifying types of arrhythmia recordings with precise aleatoric and epistemic uncertainty.

The ocean's capacity to store atmospheric carbon dioxide is some 20% greater than the estimates contained in the latest IPCC report 1 . These are the findings of a study to be published in the journal Nature on December 6, 2023, led by an international team including a biologist from the CNRS 2 . The scientists looked at the role played by plankton in the natural transport of carbon from surface waters down to the seabed.

Galactic winds enable the exchange of matter between galaxies and their surroundings. In this way, they limit the growth of galaxies, that is, their star formation rate. Although this had already been observed in the local universe, an international research team led by a CNRS scientist 1   has just revealed-using MUSE, 2  an instrument integrated into the European Southern Observatory's (ESO) Very Large Telescope-the existence of the phenomenon in galaxies which are more than 7 billion years old and actively forming stars, the category to which most galaxies belong.

Publication of the Chemistry Laboratory in the journal ACS Catalysis on November 9, 2023. Communication of CNRS Chemistry on November 27, 2023. Producing dihydrogen by electrolysis of water requires rare and therefore expensive catalysts. They could be replaced by another molybdenum-based catalyst, much more abundant but currently less efficient.

While a high-fat, low-fiber diet is known to promote cardiovascular diseases such as atherosclerosis, the mechanisms involved are not yet fully understood. Researchers at Inserm and Université Paris Cité have now turned their attention to the role of intestinal microbiota in the development of atherosclerosis.

Inserm Newsroom - Press room of the French national institute of health and medical research Visualization of immune cell (lymphocyte) proliferation in the mesenteric lymph nodes, under the influence of a microbiota modulated by a high-fat diet. Soraya Taleb/PARCC Although a high-fat, low-fiber diet is recognized as promoting cardiovascular diseases such as atherosclerosis, the mechanisms involved have not yet been fully identified.

Adobe stock Currently, the treatment of heart valve diseases relies on the replacement of the dysfunctional valve with an artificial prosthesis. However, this procedure cannot be offered to all patients due to its invasive nature.

Publication of the LBMC in the journal Science on November 9, 2023. Communication of CNRS Biology on November 10, 2023. When sperm cells are formed, they eliminate the histone proteins that package the DNA in all our other cells, replacing them with protamines, special proteins found in the sperm nucleus.

In the spring, Alpine glaciers sometimes don a sheer red or orangish veil. Known as 'red snow' or 'blood snow', this phenomenon is caused by the blooming of Sanguina nivaloides , a microscopic alga. Scientists from the CNRS, the French Alternative Energies and Atomic Energy Commission (CEA), Météo-France, INRAE, and Université Grenoble Alpes 1 turned their attention to this organism, which forms the pillar of a snowy ecosystem still poorly understood.

In spring, Alpine glaciers sometimes turn a thin layer of red or orange. This phenomenon, known as "glacier blood", is due to the proliferation of a microscopic alga called Sanguina nivaloides . Scientists 1 from CNRS, CEA, Météo-France, INRAE and Grenoble Alpes University have been studying this organism, which forms the backbone of a little-known snow ecosystem.

PRESS RELEASE LED BY WESTERN SYDNEY UNIVERSITY - INRAE participated to a new research led by Western Sydney University's Dr Jürgen Knauer, Hawkesbury Institute for the Environment, published today [Saturday 18 November 2023 AEST] in leading international journal Science Advances paints an uncharacteristically upbeat picture for the planet.

Scientists from INRAE and the CEA have taken a giant step towards lifting the veil on plant reproduction, by identifying proteins that are essential for the creation of new plant varieties. Their results were published on 16 November in Nature Plants. The scientists have delved into the way plants reproduce.

A better understanding of how bacteria acquire resistance to antibiotics is a key research issue in tackling the major public health problem of antibiotic resistance. The main mechanism by which these resistances are disseminated is called "DNA transfer by bacterial conjugation". Until now, this was thought to occur only between bacteria in direct contact with each other.

Researchers from INRAE, Universidad del Desarrollo (Chile), University of Geneva and University of Grenoble developed a new method to assess the risk associated with rockfalls in the mountains, taking into account various triggering factors and all the issues exposed. They successfully tested it in the Chilean Andes.

French, Singaporean and British researchers, led by Prof. Florent Ginhoux, head of a research team at Gustave Roussy/Inserm, have succeeded in demonstrating in a neuronal organoid the role of the brain's immune environment in its formation and development. The development of these three-dimensional structures integrating neuronal cells and the immune environment is, to date, one of the most complete in vitro models of the human brain.

Glioblastomas are highly aggressive brain tumors whose treatment consists of surgery and radiochemotherapy. A new medical imaging technique could improve patients' prognosis, according to a recent clinical trial led by élisabeth Moyal, Professor at Toulouse III - Paul Sabatier University and Head of the Radiotherapy Department at the IUCT-Oncopole.

Unlike animals, plants have cells that are all surrounded by a strong wall. This protects them but also encloses them in a rigid skeleton. So how can they grow despite this wall? Scientists from INRAE and the CNRS, in collaboration with Swiss and Belgian teams, have now unlocked part of this secret.

The largest floating ice shelves in the polar ice sheet have lost more than a third of their volume since 1978.

Between 13,000 and 9,650 years ago, the Natoufian culture developed on the eastern Mediterranean coast of northern Israel. According to recent discoveries, these hunter-gatherers were the first to use red pigments of organic origin. "It was a great surprise to discover such ancient and well-preserved pigments of organic origin" , confides Laurent Davin, archaeologist at the Laboratoire Technologie et ethnologie des mondes préhistoriques (Temps) 1 and the Hebrew University of Jerusalem, and co-author of the study just published in the journal PLOS ONE.

Neuroscientists from Inserm, CNRS and Université de Bordeaux in France, along with Swiss researchers and neurosurgeons (EPFL/CHUV/UNIL), have designed and tested a "neuroprosthesis” to correct the gait disorders associated with Parkinson's disease. In a study published in Nature Medicine , the scientists describe the development process of the device they used to treat a Parkinson's disease patient for the first time, enabling him to walk fluidly, confidently, and without falling.