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Results 21 - 40 of 79.


Earth Sciences - 23.10.2020
Deep magma facilitates the movement of tectonic plates
A small amount of molten rock located under tectonic plates encourages them to move. This is what scientists from the Laboratoire de géologie de Lyon: Terre, planètes et environnement (CNRS/ENS de Lyon/Université Claude Bernard Lyon 1) have recently discovered. Their new model takes into account not only the velocity of seismic waves but also the way in which they are attenuated by the medium they pass through.

Materials Science - 23.10.2020
High-temperature, low carbon processes: the challenge for the new Canopée laboratory
High-temperature, low carbon processes: the challenge for the new Canopée laboratory
The CNRS, l'Université de Lorraine and Saint-Gobain Group signed, this Friday, October 23, 2020, the creation of the Canopée laboratory, dedicated to the study of materials and "systems" under extreme temperature conditions. The objective is to reduce the carbon footprint of high-temperature manufacturing processes.

Environment - 14.10.2020
Unexpectedly large number of trees populate the Western Sahara and the Sahel
Unexpectedly large number of trees populate the Western Sahara and the Sahel
The number of trees inhabiting the Western Sahara, the Sahel and the Sudanian zone has exceeded the expectations of scientists, with more than 1.8 billion having been located thanks to an international collaboration including researchers from the CNRS 1 . High-resolution remote sensing made it possible to gather a multitude of satellite images of these areas, which were then analysed by applying an artificial intelligence pattern recognition method.

Physics - 13.10.2020
CEA Achieves Mass-Spectrometry Breakthrough that Paves the Way to Detecting Viruses
CEA Achieves Mass-Spectrometry Breakthrough that Paves the Way to Detecting Viruses
With Ultimate Goal of Improving Virus Knowledge, Team Now Will Use its Optomechanical System to Design a Prototype for Airborne Virus Analysis GRENOBLE, France - Oct. 13, 2020 - Targeting analysis of biological particles with large aspect ratios, such as viruses or fibrils, CEA scientists have demonstrated a breakthrough in single-particle mass spectrometry (MS) that could fast track the detection of viral particles in hospitals, offices, airplanes and other public places.

Environment - Earth Sciences - 08.10.2020
Double jeopardy for ecologically rare birds and terrestrial mammals
Double jeopardy for ecologically rare birds and terrestrial mammals
Common assumptions notwithstanding, rare species can play unique and essential ecological roles.  After studying two databases that together cover all known terrestrial mammals and birds worldwide, scientists from the CNRS, the Foundation for Biodiversity Research (FRB), Université Grenoble Alpes, and the University of Montpellier 1 have demonstrated that, though these species are found on all continents, they are more threatened by human pressures than ecologically common species and will also be more impacted by future climate change.

Astronomy / Space Science - Physics - 02.09.2020
New populations of black holes revealed by gravitational waves
New populations of black holes revealed by gravitational waves
The gravitational wave 1 detectors LIGO and Virgo have just chalked up their biggest catch yet, a black hole 142 times the mass of the Sun, resulting from the merger of two black holes of 85 and 66 solar masses.  The remnant black hole is the most massive ever observed with gravitational waves, and it could give us some clues about the formation of the supermassive black holes that sit at the centres of some galaxies.

Chemistry - Physics - 27.08.2020
Earth may always have been wet
Earth may always have been wet
The Earth is the only planet known to have liquid water on its surface, a fundamental characteristic when it comes to explaining the emergence of life.

Health - Chemistry - 13.08.2020
The behaviour of therapeutic antibodies in immunotherapy
The behaviour of therapeutic antibodies in immunotherapy
Since the late 1990s, immunotherapy has been the frontline treatment against lymphomas where synthetic antibodies are used to stop the proliferation of cancerous white blood cells. However, in the more than 20 years since their use began, the molecular mechanisms that underlie this therapy are still little understood.

Astronomy / Space Science - Environment - 05.08.2020
Ammonia-rich hail sheds new light on Jupiter's weather
Ammonia-rich hail sheds new light on Jupiter’s weather
New Juno results suggest that the violent thunderstorms taking place in Jupiter's atmosphere may form ammonia-rich hail, or 'mushballs', that play a key role in the planet's atmospheric dynamics. This theory, developed using data from Juno's microwave radiometer by the Juno team, is described in two publications led by a researcher at the Laboratoire Lagrange (CNRS/Observatoire de la Côte d'Azur/Université Côte d'Azur) with support from the CNES.

Life Sciences - 03.08.2020
Iron-mediated cancer cell activity: a new regulation mechanism
Iron-mediated cancer cell activity: a new regulation mechanism
Researchers at the Institut Curie have recently shown that cancer cells use a membrane protein that has been known for several decades to internalise iron. Published (August 3rd, 2020), this work shows that the absorbed iron allows cancer cells to acquire metastatic properties. Biologists knew CD44 well, but didn't know the major biological function that it fulfils.

Earth Sciences - 23.07.2020
Reduction in human-induced seismic noise during the pandemic lockdown
Reduction in human-induced seismic noise during the pandemic lockdown
A team of 76 seismologists, including several French scientists from the CNRS, the Paris Institute of Earth Physics (IPGP), Université de Paris, Université de Strasbourg and the French National Research Institute for Sustainable Development (IRD) 1 discovered that the lockdown measures used in the fight against the spread of COVID-19 have led to a 50% reduction in seismic noise due to human activity across the globe between January-June 2020.

Health - Environment - 22.07.2020
Livestock expansion is a factor in global pandemics
Livestock expansion is a factor in global pandemics
The growth of global livestock farming is a threat to our biodiversity and also increases the health risks to both humans and domesticated animals. The patterns that link them are at the heart of a study published in Biological Conservation by a scientist from the Institute of Evolution Sciences of Montpellier (ISEM - CNRS/Université de Montpellier/IRD/EPHE) and the French Agricultural Research Centre for International Development's (CIRAD) ASTRE laboratory.

Health - Mathematics - 21.07.2020
"Winter is coming": the influence of seasonality on pathogen emergence
Seasonal fluctuations drive the dynamics of many infectious diseases. For instance, the flu spreads more readily in winter. Two scientists from the University of Nantes 1 and the CNRS 2 in Montpellier have developed a mathematical model to predict the risk of the emergence of an epidemic, depending on the time of the year at which the pathogen is introduced.

Physics - Chemistry - 17.07.2020
Chemical Thermometers Take Temperature to the Nanometric Scale
Chemical Thermometers Take Temperature to the Nanometric Scale
Scientists from the Coordination Chemistry Laboratory and Laboratory for Analysis and Architecture of Systems, both of the CNRS, recently developed molecular films that can measure the operating temperature of electronic components on a nanometric scale. These patented temperature-sensitive molecules have the distinctive quality of being extremely stable, even after millions of uses.

Life Sciences - 15.07.2020
How flies flip around on take-off from an upside- down position
How flies flip around on take-off from an upside- down position
Flies are able to right themselves very quickly when taking off from an upside-down position. Scientists from the CNRS and from The Institute of Movement Science (ISM) at Aix-Marseille Université studying this phenomenon discovered the surprising way these insects begin by turning their bodies before their heads on take-off.

Environment - Mathematics - 06.07.2020
Behind the dead-water phenomenon
Behind the dead-water phenomenon
What makes ships mysteriously slow down or even stop as they travel, even though their engines are working properly? This was first observed in 1893 and was described experimentally in 1904 without all the secrets of this "dead water" being understood. An interdisciplinary team from the CNRS and the University of Poitiers has explained this phenomenon for the first time: the speed changes in ships trapped in dead water are due to waves that act like an undulating conveyor belt on which the boats move back and forth.

Astronomy / Space Science - 02.07.2020
Unprecedented ground-based discovery of two strongly interacting exoplanets
Unprecedented ground-based discovery of two strongly interacting exoplanets
Several interacting exoplanets have already been spotted by satellites. But a new breakthrough has been achieved with, for the first time, the detection directly from the ground of an extrasolar system of this type.  An international collaboration including CNRS researchers 1 has discovered an unusual planetary system, dubbed WASP-148, using the French instrument SOPHIE at the Observatoire de Haute-Provence (CNRS/Aix-Marseille Université) .

Physics - 22.06.2020
CMOS Device Fabrication at 500°C, Paving the Way to High-Performance 3D Monolithic CMOS Integration
CMOS Device Fabrication at 500°C, Paving the Way to High-Performance 3D Monolithic CMOS Integration
VLSI 2020 Paper Details First Proof of Integration of FDSOI CMOS Devices Processed at 500°C, for Further 3D Monolithic Integration GRENOBLE, France - June 22, 2020 - In an FDSOI CMOS processing breakthrough, CEA-Leti scientists have pushed fabrication thermal-process boundaries down to 500°C for CMOS integration, while showing strong performance gains especially in P-type metal-oxide-semiconductor (PMOS) logic devices.

Astronomy / Space Science - 17.06.2020
Quasar jets are particle accelerators thousands of light-years long
Quasar jets are particle accelerators thousands of light-years long
An international collaboration bringing together over 200 scientists from 13 countries has shown that the very high-energy gamma-ray emission from quasars, galaxies with a highly energetic nucleus, is not concentrated in the region close to their central black hole but in fact extends over several thousand light-years along jets of plasma.

Physics - 16.06.2020
CEA-Leti Demonstrates Breakthrough Architecture for HPC Devices Using Gate-All-Around Nanosheet Fabrication Process
Virtual Presentation During VLSI 2020 Details Transistors' Performance And Power-Use Advantages Versus FinFET Devices -GRENOBLE, France - June 15, 2020 - CEA-Leti has demonstrated fabrication of a new gate-all-around (GAA) nanosheet device as an alternative to FinFET technology targeting high-performance (HPC) applications such as smartphones, laptops, and mobile systems with data collection and processing involving low-power and high-speed operation.