Results 121 to 130 of about 913,493 (290)

The EU's Schizophrenic Constitutional Debate: Vertical and Horizontal Decentralism in European Governance [PDF]

open access: yes
Normative discourses on the European institutional set-up have paid attention to both vertical and horizontal decentralism. Decentralism refers to the respect of the autonomy of lower or smaller decision-making levels, the procedures privileging these ...
Stijn Smismans
core  

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland   +5 more
wiley   +1 more source

Russia between transition and globalization [PDF]

open access: yes
The research aims to understand the impact of the internal factors on the formulation of a policy of selective opening of the Russian economy since the beginning of the transition.
Olga Garanina
core  

Diving into the vertical dimension of elasmobranch movement ecology. [PDF]

open access: yesSci Adv, 2022
Andrzejaczek S   +170 more
europepmc   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm   +3 more
wiley   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel   +6 more
wiley   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu   +8 more
wiley   +1 more source

Relación entre la dimensión vertical dentoalveolar Posterior y clasificación esquelética en pacientes tratados Ortodóncicamente con extracciones y sin extracciones de Primeros bicúspides. Análisis cefalométrico Relationship between posterior dentoalveolar vertical dimension and skeletal classification in orthodontic patients treated with and without first premolar extractions. a cephalometric analysis

open access: yesRevista Facultad de Odontología Universidad de Antioquia, 2012
INTRODUCCIÓN: El objetivo del estudio fue determinar y comparar cefalométricamente la variación de la dimensión vertical dentoalveolar posterior en pacientes tratados ortodóncicamente con y sin extracciones de primeros bicúspides en maloclusiones clases ...
María Piedad González Sauter   +2 more
doaj  

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