Results 51 to 60 of about 10,257 (156)

Exploring a Ugi‐Mediated Polymerization‐Induced Self‐Assembly Approach to Peptoid Particles

open access: yesMacromolecular Rapid Communications, EarlyView.
Ugi‐mediated polymerization‐induced self‐assembly (U‐PISA) enables the one‐pot synthesis of PEG‐stabilized polypeptoid nanoparticles under mild aqueous conditions. By tuning PEG molar mass and feed composition, tunable spherical and worm‐like nano‐objects are obtained.
Thi Phuong Thu Nguyen   +8 more
wiley   +1 more source

Les matériaux archéologiques : applications et enjeux. L’exemple des « bronzes » durant la protohistoire européenne

open access: yesMosaïque, 2010
L’objectif est d’exposer l’histoire technique de certains objets archéologiques. Cela est indissociable de l’histoire sociale, car la production d’objets au sein d’une société suppose une organisation de celle‐ci et la mise en place d’un réseau ...
Ewa Wyremblewski
doaj   +1 more source

Ultrastable Water‐in‐Water Emulsions by Addition of Polyion Complex Micelles

open access: yesMacromolecular Rapid Communications, EarlyView.
Water‐in‐water emulsions from mixtures of dextran and poly(ethylene oxide) (PEO) prepared in the presence of polyion complex micelles display an increase of stability from few hours to several months. Both dextran‐in‐PEO and PEO‐in‐dextran were stable against coalescence over this period of time.
Léna S. Vincent   +8 more
wiley   +1 more source

Modélisation, caractérisation et analyse du comportement dynamique des transferts de chaleur à travers la paroi en polyéthylène et en verre des serres agricoles

open access: yesRevue des Énergies Renouvelables, 2010
La serre tunnel agricole classique est largement répandue dans les pays méditerranéens malgré les insuffisances qu’elle présente, notamment la surchauffe pendant le jour et le refroidissement nocturne intense, qui parfois se traduit par l’inversion ...
S. Bendimerad   +4 more
doaj  

Material influence on biocontamination level and adhering cell physiology Influence des matériaux sur le niveau de biocontamination et la physiologie des cellules adhérentes

open access: yesMATEC Web of Conferences, 2013
Dans la plupart des environnements, les microorganismes vivent préférentiellement au sein de biofilms. De nombreux facteurs influencent leur formation i.e.
Allion Audrey   +2 more
doaj   +1 more source

An Anisotropic Constitutive Model for Crushable Geomaterials Based on Non‐Stationary Critical State Line Concept

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT In this paper, the dependencies of granular soil behaviour on particle crushing and fabric anisotropy are formulated within a novel model based on bounding surface plasticity theory enriched by the non‐stationary critical state line (NCSL) concept.
Hesam Dejaloud   +2 more
wiley   +1 more source

Robust β‐myrcene block copolymer elastomeric vitrimers

open access: yesPolymer International, EarlyView.
Myrcene‐based vitrimeric elastomers were compared: statistical (poly(styrene‐stat‐myrcene‐stat‐AAEMA)] versus ‘hard–soft’ diblock (poly(styrene)‐block‐poly(myrcene‐co‐AAEMA)). The diblock's ability to anchor the glassy poly(styrene) blocks in a self‐assembled microstructure was effective – leading to four times higher tensile stress and ten times ...
Chong Yang Du   +2 more
wiley   +1 more source

Impact of polymer aging on main‐chain poly(fullerene)s with halide chain‐ends for inverted perovskite solar cells

open access: yesPolymer International, EarlyView.
Subtle variations in halogen chemistry significantly affect the aging behavior of polymeric electron transport layers in inverted perovskite solar cells, underscoring the importance of precise chemical design for enhancing long‐term stability. Abstract As perovskite solar cells (PSCs) advance toward commercialization, the need for stable and easily ...
João V. Paulin   +7 more
wiley   +1 more source

Toward the Synthesis of Pestalustaine A: Structural Revision and Formation of Original Strained Tricyclic Architectures. [PDF]

open access: yesAngew Chem Int Ed Engl
Our synthetic endeavor toward the total synthesis of the reported unprecedented tricyclic skeleton of the sesquiterpene pestalustaine A allowed us to perform divergent cyclizations of a bicyclo[4.4.1]undec‐3‐ene into complex tricyclic architectures and to revise the structure of the natural product.
Cao W   +12 more
europepmc   +3 more sources

Les échantillons de matériaux

open access: yesMateriales de Construccion, 1954
No ...
L.S.C.
doaj   +1 more source

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