Results 11 to 20 of about 9,990 (162)

Élaboration de biomatériaux céramiques optimisés pour l’ingénierie tissulaire osseuse

open access: yesCahiers du MIMMOC, 2021
L’utilisation de biomatériaux en médecine humaine remonte à des temps anciens. Le champ de la recherche et du développement de matériaux innovants se fonde sur des schémas stratégiques rationnels.
Amandine Magnaudeix   +1 more
doaj   +1 more source

Héritage et identité : moyens de construction d’une culture [PDF]

open access: yesAkofena, 2023
Résumé : Cet article tente de revisiter, d’une part, les liens qui existeraient entre héritage et identité et d’autre part, le rôle que ces deux concepts pourraient jouer dans la construction d’une culture. Pour ce faire, il s’appuie sur des éléments qui
Mor DIEYE
doaj   +1 more source

Interdisciplinarité ou mélange des genres en histoire des sciences ?

open access: yesCahiers François Viète, 2020
This paper develops methodological reflections based on my own practice of the history of science, without claiming them as a model. Following a brief historical sketch of the institutionalisation process of the history of science and its oscillation ...
Bernadette Bensaude-Vincent
doaj   +1 more source

Twentieth Century Fertilizers in France from Natural Mixing to Artificial Making (1890-1970)

open access: yesCahiers François Viète, 2017
Compound fertilizer is a material composed of a mixture of primary nutrients. The physical constitution and presentation of compound fertilizer evolved from the nineteenth to the twentieth century.
Philippe Martin
doaj   +1 more source

Optimisation fiabiliste d’une structure en alliage à mémoire de forme [PDF]

open access: yesMATEC Web of Conferences, 2019
L’objectif de l’optimisation fiabiliste (RBDO) est de trouver le meilleur compromis entre la sécurité et le coût. Plusieurs méthodes, telles que la méthode hybride (HM) et la méthode des facteurs optimaux de sûreté (OSF), sont développées pour atteindre ...
Abid Fatma   +5 more
doaj   +1 more source

Paint as a Material: The Transformation of Paint Chemistry and Technology in America (ca. 1880-1920)

open access: yesCahiers François Viète, 2017
This chapter recounts and analyzes the emergence of modern paint chemistry and technology in the United States. Until late in the 19th century, painting was above all a decorative art and craft, and chemists’ role in the paint trade was largely ...
Augustin Cerveaux
doaj   +1 more source

Directional Second Sphere Effect on CO2 Activation and Reduction by Iron Porphyrin in Aprotic and Protic Media

open access: yesAngewandte Chemie, EarlyView.
Directional control within the secondary coordination sphere redefines CO2 reduction by iron porphyrins. Simply rearranging identical urea hydrogen‐bond donors modulates reactivity, revealing that optimal catalysis does not only arise from maximal intermediate stabilization, but also from directional, adaptive non‐covalent interactions that balance ...
Ashutosh Vishwakarma   +7 more
wiley   +2 more sources

Quality Matters for Historical Plastics: The Past-Making of Cellulose Nitrates for Future Preservation

open access: yesCahiers François Viète, 2017
The material degradation of an historical artifact through chemical breakdown may place the object at the end of its useful heritage “life” in terms of aesthetic value and appearance.
Anita Quye
doaj   +1 more source

Virus‐Mediated Self‐Assembly of Functional Cyclodextrins for Antiviral Inhibition

open access: yesAngewandte Chemie, EarlyView.
A sialic acid (SA)‐functionalized cyclodextrin (CD) self‐assembles on SARS‐CoV‐2 through ligand–receptor recognition, nucleating cooperative supramolecular polymer growth that blocks infection. The adaptive assembly requires both ligand binding and host–guest polymerization, remains active across variants, and can be tuned by coassembly, establishing ...
Pedro J. Hernando   +10 more
wiley   +2 more sources

Point and Line to Plane: The Ontography of Carbon Nanomaterials

open access: yesCahiers François Viète, 2017
The carbons known today as fullerenes, nanotubes, and graphene were all observed or theorized well before becoming emblematic nanomaterials. However, by the 1990s, their mode of existence was shifted from bench or brand objects to technoscientific ...
Sacha Loeve
doaj   +1 more source

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