Results 111 to 120 of about 26,147 (264)

Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a Thermoplastic‐to‐Thermoset Transition

Advanced Materials, EarlyView.
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two‐stage curing process with a thermoplastic‐like intermediate. This uncommon behavior enables extrusion and fabrication of thermoplastic prepregs that can be cured into thermoset composites.
Izabela Kurowska, Leire Unanue, Itxaso Calafel, Dorleta Otaegui, Jorge L. Olmedo‐Martínez, Lourdes Irusta, Daniel Vinagre, Nora Aranburu, Nerea Casado, Ibon Odriozola, David Mecerreyes   +10 more
wiley   +1 more source

Temps long.

, 2004
Ce que Fernand Braudel a dit sur le temps, nous l’avons en mémoire. En présentant chaque moment comme un composé de trois rythmes distincts, il a pensé ensemble ce qui relevait de l’événement et ce qui appartenait à la durée. Il a ainsi permis une relance des débats sur l’historicité. Cette topique n’a pourtant pas que les défauts de ses qualités. Elle
openaire   +2 more sources

Temps court, temps long

Calenda, 2017
Après « ordre et désordre », l'université de la Manouba consacre son cinquième symposium scientifique à la notion fondamentale et transversale du temps. Pour structurer sa prochaine rencontre annuelle et multidisciplinaire, elle propose ainsi à sa communauté scientifique de débattre, du 5 au 8 avril 2017, d'un autre binôme, « temps court, temps long ».
openaire   +1 more source

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

Advanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain, Xian'e Li, Mats Fahlman, Olle Inganäs, Koen Vandewal, Feng Gao   +5 more
wiley   +1 more source

Cyclothymic and anxious affective temperament in perinatal depression: findings from an exploratory cross-sectional study. [PDF]

Front Psychiatry
Orsolini L, Longo G, Manfredi E, Tassi F, Volgare R, Romaldi C, Francesconi G, Volpe U.   +7 more
europepmc   +1 more source

Temps d’espera, temps d’escolta

, 2013
En el món de l’educació i la clínica estem molt atents al concepte d’escolta per tal de treballar amb les persones i crear l’empatia suficient, que permeti construir relacions significatives. Quan parlem de la primera infància, l’acollida i l’escolta són les actituds bàsiques que faciliten una atmosfera de benestar i seguretat.
openaire   +2 more sources

Azobenzene's Cross‐Scale Optics and Photonics: Molecular Photoswitching, Mesoscopic Material Motions, and Adaptive Devices

Advanced Materials, EarlyView.
Azobenzene photoswitches translate molecular‐scale E/Z photoisomerization into macroscopic material responses and device‐level photonic functions. This Review highlights how azobenzene research has evolved from molecular photochemistry to photoalignment, mass migration, photomechanics, and heat release, ultimately enabling holography, reconfigurable ...
Heeju Son, Soyul Kwak, Heerin Noh, Minsang Kim, Doyeon Noh, Subhayan Chakraborty, Jaewon Lee, YongDeok Cho, Kyeongsoo Kim, Taewoong Eom, Moonyoung Kim, Jangwon Kim, Hoyoung Lee, Soyoung Lee, Jaehun Kim, Grace G. D. Han, Shin‐Tson Wu, Stefano Oscurato, Arri Priimagi, Marina Saphiannikova, Seungwoo Lee   +20 more
wiley   +1 more source

Les modèles à entrée unique : une approche éthique pour réduire les temps d’attente pour une intervention chirurgicale. [PDF]

CMAJ
Urbach DR, Devon KM, Pakes BN.
europepmc   +1 more source

Rational Tuning of Hygroscopic Oscillation of Stacked Nanoflake Assemblies for Continuous Ambient Energy Harvesting

Advanced Materials, EarlyView.
Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang, Jimin Fu, Gesa Zhang, Zhihua Liang, Boxun Zhang, Haimin Yao   +5 more
wiley   +1 more source

A Geometrically Transient Platform for Bioelectronic Implants

Advanced Materials, EarlyView.
Minimally invasive bioelectronic implants often compromise performance for smaller sizes. To resolve this optimization dilemma, a wireless bioelectronic implant with a transient geometry is introduced (MiFi). The origami‐inspired device miniaturizes up to sixfold for syringe insertion and autonomously unfolds post‐implantation.
Selin Olenik, John D. Goodwin, Atharv Naik, Philip Coatsworth, Ioi Chit Cheung, Farbod Amirghasemi, Anies Sohi, Ehsan Abedi, Tayeb Tadlaoui, Maral P. S. Mousavi, Andriy S. Kozlov, Victoria Salem, Andrew S. Cowburn, Firat Guder   +13 more
wiley   +1 more source