Actualités 2019
Category
Results 41 - 58 of 58.
Atmospheric CO2 levels have risen by 30% in a century. A Franco-Australian study by scientists from INRA, James Cook University and the Commonwealth Scientific and Industrial Research Organisation (CSIRO) has evaluated the global impact of rising atmospheric CO2 levels on the terrestrial vegetation that uses this gas as a source to drive its growth.
One of the crucial stages of gestation is implantation of the embryo in the uterus, in contact with a tissue called the endometrium. However, the mechanisms that enable this implantation remain largely unclear. A Franco-American collaboration co-led by INRA research scientists has revealed that intense and fine-tuned crosstalk is established between the embryo and endometrium, allowing them to adapt to each other.
An international research team that included INRA and CNRS scientists has revealed the key role played by rare plant species in maintaining ecosystem "multifunctionality": both species and evolutionary diversity is important. This work was recently been published in PNAS . Based on data from 123 sampling sites around the world, the results show that taxonomic, functional, and phylogenetic biodiversity matters for ecosystem functioning.
Modulation of tissue growth heterogeneity by responses to mechanical stress
Publication from the Laboratoire Reproduction et développement des plantes (RDP) in the journal Proceedings of the National Academy of Sciences USA (PNAS) on January 23, 2019. Abstract: Morphogenesis often yields organs with robust size and shapes, whereas cell growth and deformation feature significant spatiotemporal variability.
Publication from the Laboratoire Reproduction et développement des plantes (RDP) in the journal Proceedings of the National Academy of Sciences USA (PNAS) on January 23, 2019. Abstract: Morphogenesis often yields organs with robust size and shapes, whereas cell growth and deformation feature significant spatiotemporal variability.
A model for describing the hydrodynamics of crowds
By studying the movement of runners at the start of marathons, researchers from the Laboratoire de physique (CNRS/ENS de Lyon/UCBL) have just shown that the collective movements of these crowds can be described as liquid flows. Their results, published in Science on January 4, 2019, have enabled them to predict how fluctuations in speed and density are transmitted through massive crowds.
By studying the movement of runners at the start of marathons, researchers from the Laboratoire de physique (CNRS/ENS de Lyon/UCBL) have just shown that the collective movements of these crowds can be described as liquid flows. Their results, published in Science on January 4, 2019, have enabled them to predict how fluctuations in speed and density are transmitted through massive crowds.
INRA, CIRAD, and CNRS researchers recently made an unprecedented discovery: the different genomic segments of a multipartite 1 virus can occupy distinct cells within their host but still work together to generate infection. This finding challenges a key paradigm in virology, notably that a virus's entire genome must enter a given cell and replicate therein before repeating the process in subsequent cells, thus causing infection.
Encouraging a holistic approach in the fight against infectious diseases
Infectious diseases, the main causes of human mortality according to the WHO, have always been a particular concern for society. In a context of global change, the fight against infectious diseases remains a major challenge for the future and especially for Dominique Pontier and François-Loïc Cosset, researchers at the Université de Lyon.
Infectious diseases, the main causes of human mortality according to the WHO, have always been a particular concern for society. In a context of global change, the fight against infectious diseases remains a major challenge for the future and especially for Dominique Pontier and François-Loïc Cosset, researchers at the Université de Lyon.
Researchers from INRA, CIRAD, CEA, the University of Montpellier, and Chicago and Vanderbilt Universities in the United States have developed an innovative method for analysing the genome of the Wolbachia bacterium. This endosymbiotic* bacterium infects more than 70% of insects and is capable of influencing insect transmission of pathogens such as dengue or Zika virus.
REDFINCH Team Achieves These Capabilities in Mid-infrared Region, Where Many Important Chemical and Biological Species Have Strong Absorption Fingerprints GRENOBLE, France - March 19, 2019 - Leti, a research institute of CEA Tech, today announced prototype development of highly miniaturized, portable optical sensors for chemical detection of gas.
Research teams from the Villefranche-sur-Mer Developmental Biology Laboratory (jointly managed by Sorbonne University and CNRS), in collaboration with the Biological Institute Paris-Seine (Sorbonne University), CEA-Genoscope and the University of Vienna have decoded the genome of the jellyfish Clytia.
Publication from LBMC, IBENS and Isyeb in Science on March 15, 2019. In the Mesorhabditis belari roundworm, the sole purpose of males is to help females produce clones of themselves. This unique form of reproduction was recently described by researchers from the CNRS, l'ENS de Lyon, l'Université Claude Bernard Lyon 1, and the Muséum national d'Histoire naturelle in an article published on 15 March 2019 .
Lipidots Platform Strengthens Immune Response to Protein That Is Key to HIV Vaccine; Results Presented in Nature Publishing Group's npj Vaccines GRENOBLE, France - Feb. 27, 2019 - Leti, a research institute of CEA Tech, in collaboration with CEA's Fundamental Research Division , has developed a new vaccine approach for HIV based on engineered lipid nanoparticles that deliver p24 - a viral protein that is key to an HIV vaccine- and optimize the CpG adjuvant's effect.
CEA-Leti and Stanford Target Edge-Ai Apps with Breakthrough NVM Memory Cell
Paper at ISSCC 2019 Presents Proof-of-Concept Multi-Bit Chip that Overcomes NVM's Read/Write, Latency and Integration Challenges SAN FRANCISCO - Feb. 20, 2019 - Researchers at CEA-Leti and Stanford University have developed the world's first circuit integrating multiple-bit non-volatile memory (NVM) technology called Resistive RAM (RRAM) with silicon computing units, as well as new memory resiliency features that provide 2.3-times the capacity of existing RRAM.
Paper at ISSCC 2019 Presents Proof-of-Concept Multi-Bit Chip that Overcomes NVM's Read/Write, Latency and Integration Challenges SAN FRANCISCO - Feb. 20, 2019 - Researchers at CEA-Leti and Stanford University have developed the world's first circuit integrating multiple-bit non-volatile memory (NVM) technology called Resistive RAM (RRAM) with silicon computing units, as well as new memory resiliency features that provide 2.3-times the capacity of existing RRAM.
CEA-Leti combines integrated optics and holography in novel lens-free, augmented reality technology
Leti, an institute of CEA-Tech, has developed a novel retinal-projection concept for augmented reality (AR) uses based on a combination of integrated optics and holography. The lens-free optical system uses disruptive technologies to overcome the limitations of existing AR glasses, such as limited field-of-view and bulky optical systems.
Leti, an institute of CEA-Tech, has developed a novel retinal-projection concept for augmented reality (AR) uses based on a combination of integrated optics and holography. The lens-free optical system uses disruptive technologies to overcome the limitations of existing AR glasses, such as limited field-of-view and bulky optical systems.
CEA-Leti builds prototype of next-generation mid-infrared optical sensors for portable devices
SAN FRANCISCO - Feb. 5, 2019 - CEA-Leti today announced it has prototyped a next-generation optical chemical sensor using mid-infrared silicon photonics that can be integrated in smartphones and other portable devices. Coin-size, On-chip Sensors that Combine High Performance and Low Power Consumption Presented in Paper at SPIE Photonics West 2019.
SAN FRANCISCO - Feb. 5, 2019 - CEA-Leti today announced it has prototyped a next-generation optical chemical sensor using mid-infrared silicon photonics that can be integrated in smartphones and other portable devices. Coin-size, On-chip Sensors that Combine High Performance and Low Power Consumption Presented in Paper at SPIE Photonics West 2019.
Grown throughout the world, F1 hybrid crop varieties have highly desirable traits. However, they remain expensive to produce. This situation may be about to change. By modifying the expression of certain genes, INRA researchers have created hybrid rice plants whose seeds give rise to offspring that are identical to the mother plant.
Mars 2020 - geology and the conquest of space
Cathy Quantin-Nataf, Gilles Dromart and Gilles Montagnac of the Laboratoire de Géologie de Lyon (LGL-TPE) are members of a research team developing one of the instruments that will go aboard the rover of the Mars 2020 Mission: the SuperCam. Watch live as NASA's next rover, Mars 2020, is built and tested in the Spacecraft Assembly Facility at the agency's Jet Propulsion Laboratory in Pasadena, California.
Cathy Quantin-Nataf, Gilles Dromart and Gilles Montagnac of the Laboratoire de Géologie de Lyon (LGL-TPE) are members of a research team developing one of the instruments that will go aboard the rover of the Mars 2020 Mission: the SuperCam. Watch live as NASA's next rover, Mars 2020, is built and tested in the Spacecraft Assembly Facility at the agency's Jet Propulsion Laboratory in Pasadena, California.
Evolution: a new mechanism of genome size variation linked to the size of organisms discovered in tunicates
Publication from the IGFL in Current Biology on April 1st, 2019. The genome, which corresponds to the whole DNA content of a cell and is characteristic of an organism, can present big variations in size between species. If this size does not correlate with organismal "complexity", it is not clearly established yet if bigger or smaller genomes could be adaptive.
Publication from the IGFL in Current Biology on April 1st, 2019. The genome, which corresponds to the whole DNA content of a cell and is characteristic of an organism, can present big variations in size between species. If this size does not correlate with organismal "complexity", it is not clearly established yet if bigger or smaller genomes could be adaptive.
