Results 101 to 110 of about 1,416,028 (402)

Échelles de temps pour l'évolution quantique à petite constante de Planck [PDF]

open access: yesarXiv, 2009
We present some recent results concerning the long time semiclassical approximation .
arxiv  

Enhancing the Age‐Hardening Response of Laser Powder‐Bed Fusion WE43 Alloy through Microstructural Control

open access: yesAdvanced Engineering Materials, EarlyView.
Laser powder‐bed fusion (L‐PBF) can produce dense WE43 magnesium alloy parts, but their mechanical properties are limited by a nonhomogeneous microstructure. This study investigates the effects of varying direct aging (T5) and artificial age‐hardening (T6) conditions on microstructure and strength. Optimized T6 treatment significantly improves strength
Prathviraj Upadhyaya   +5 more
wiley   +1 more source

Effect of Water Aging on the Mechanical Properties of Hybrid Carbon/Aramid Reinforced Thermoplastic Composites

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the mechanical properties of Carbon/Aramid intraply hybrid fiber‐reinforced Elium composites under 6 months of water aging. After aging, flexural strength decreases by 25.89%, tensile strength by 4.40%, and fracture toughness by 21.56%.
Muhammed Huseyin Guzel, Gurol Onal
wiley   +1 more source

Changement grammatical et discursif en français multiculturel de la région parisienne : éléments de comparaison [PDF]

open access: yes, 2017
Cet article cherche à comparer la variation et le changement dans deux domaines linguistiques, à savoir la grammaire et le discours. Il présente les résultats du projet « Multicultural London English – Multicultural Paris French » et s’interroge sur les ...
Secova, Maria
core   +1 more source

Microstructure, Mechanical Properties, and Antibacterial Performance of Novel Fe‐Mn‐Zn Nanocrystalline Alloys Produced by Mechanical Alloying

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the development of Fe‐Mn‐Zn nanocrystalline alloys (0–9 wt% Zn) by mechanical alloying and subsequently hot pressing. Their microstructure, density, hardness, wear resistance, corrosion behavior, and antibacterial properties are systematically examined.
Ilker Emin Dag   +3 more
wiley   +1 more source

Une intégration paneuropéenne ? [PDF]

open access: yes
Cet article traite dans un premier temps de l'aspect asymétrique des relations russo-européennes sur le plan économique et politique. Dans un second temps, il s'intéresse à la participation de la Russie dans le projet stratégique de l'Europe. Enfin, dans
Olga Garanina
core  

Premiers résultats de la culture "in vitro" d'ovules non fécondés de cotonnier (Gossypium hirsutum L.) [PDF]

open access: yes, 1984
L'haploidisation par gynogénèse a été tentée sur Gossypium hirsutum. Après 2 a 3 mois de culture, des embryons à divers stades ont été observés dans les cavités ovulaires.
Pallarès, P.
core  

‘Time’ in tourism: ‘individual time’ and ‘social time’ [PDF]

open access: yes, 2009
The author does a review of the research into tourist activity and concludes that the particular character of tourist behaviour is reflected best in the study of time budgets. He proposes Max Weber's ideal-type method to be used in the analysis.
Bonneau, Michel
core   +1 more source

Shape Memory Polymer‐Based Hook‐and‐Loop Fastener for Robust Bonding and on‐Demand Easy Separation

open access: yesAdvanced Engineering Materials, EarlyView.
A 3D shape memory polymer‐based hook‐and‐loop fastener, fabricated using projection microstereolithography and molding, offers tunable bonding strength through temperature control. When heated from 25 to 70 °C, the fastener softens and deforms easily, reducing bonding strength by 20‐fold for on‐demand easy separation.
Chen Yang   +5 more
wiley   +1 more source

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