Planet Formation Imager (PFI): science vision and key requirements

The Planet Formation Imager (PFI) project aims to provide a strong scientific vision for ground-based optical astronomy beyond the upcoming generation of Extremely Large Telescopes. We make the case that a breakthrough in angular resolution imaging capabilities is required in order to unravel the processes involved in planet formation. PFI will be optimised to provide a complete census of the protoplanet population at all stellocentric radii and over the age range from 0.1 to ~100 Myr. Within this age period, planetary systems undergo dramatic changes and the final architecture of planetary systems is determined. Our goal is to study the planetary birth on the natural spatial scale where the material is assembled, which is the "Hill Sphere" of the forming planet, and to characterise the protoplanetary cores by measuring their masses and physical properties. Our science working group has investigated the observational characteristics of these young protoplanets as well as the migration mechanisms that might alter the system architecture. We simulated the imprints that the planets leave in the disk and study how PFI could revolutionise areas ranging from exoplanet to extragalactic science. In this contribution we outline the key science drivers of PFI and discuss the requirements that will guide the technology choices, the site selection, and potential science/technology tradeoffs.S.K. acknowledges support from an STFC Rutherford Fellowship (ST/J004030/1) and Philip Leverhulme Prize (PLP-2013-110). Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration

Le cumul de qualifications pénales dans les pratiques belge et internationale : quelques réflexions à la lumière du principe ne bis in idem

Dans cette contribution, les auteurs examinent les pratiques belge et internationale en matière de cumul de qualifications pénales - ou, selon l'expression consacrée dans l'ordre juridique belge, de "concours idéal d'infractions". Ils interrogent ensuite la conformité de ces pratiques au principe ne bis in idem

SYNTHESE ET CARACTERISATION DE NOUVEAUX OXYDES DE COBALT A VALENCE MIXTE DANS LE SYSTEME BI-SR-CO-O

CAEN-BU Sciences et STAPS (141182103) / SudocSudocFranceF

The reproductive tract of the black soldier fly (<i>Hermetia illucens</i>) is highly differentiated and suggests adaptations to sexual selection

International audienceBlack soldier fly (BSF), Hermetia illucens (L.) (Diptera: Stratiomydae), is a promising insect for conversion of agrifood wastes to high-quality proteins for feed. It is produced worldwide to transform larvae into very efficient protein foodstuff for fishes and in the near future for poultries and pigs (Tomberlin & van Huis, 2020). To improve the management of mass cultures of this insect, a better knowledge of its biology is needed, especially of factors that can influence fertility and reproductive output, as this may directly improve yield and mass production. Sperm management in males and females is a key factor in the success of reproduction (Parker, 1970). In insects, sper

Pancreas allograft rejection occurring after ChAdOx1 nCoV-19 vaccine

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A fourth SARS-CoV-2 mRNA vaccine in strictly seronegative kidney transplant recipients

International audienceSince January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre-including this research content-immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active

"Un Manuscrit Naturellement" Rescuing a library buried in digital sand

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Collapsing glomerulopathy in a patient with APOL1 intermediate-risk genotype triggered by lupus nephritis and SARS-CoV-2 infection: lessons for the clinical nephrologist

International audienceNo abstract availabl

"Un Manuscrit Naturellement" Rescuing a library buried in digital sand

International audienc

"Un Manuscrit Naturellement" Rescuing a library buried in digital sand

International audienc