Results 71 to 80 of about 326,565 (290)

High‐Resolution MRI Revealed Different Etiology‐Specific Associations With Cerebral Infarction in Adult Moyamoya Vasculopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐resolution MRI enables detailed assessment of intracranial vessel wall pathology in moyamoya vasculopathy. We aimed to classify adult moyamoya vasculopathy etiologies using high‐resolution MRI and to examine subtype‐specific associations between high‐resolution MRI features and ischemic infarction.
Guangsong Han   +8 more
wiley   +1 more source

Deterministic placement of ultra-bright near-infrared color centers in arrays of silicon carbide micropillars

open access: yesBeilstein Journal of Nanotechnology, 2019
We report the enhancement of the optical emission between 850 and 1400 nm of an ensemble of silicon mono-vacancies (VSi), silicon and carbon divacancies (VCVSi), and nitrogen vacancies (NCVSi) in an n-type 4H-SiC array of micropillars.
Stefania Castelletto   +9 more
doaj   +1 more source

ENGINEERING LABOUR MARKET IN CONSTRUCTION IN UKRAINE AND ABROAD

open access: yesThree Seas Economic Journal, 2020
The purpose of the article is to analyse the engineering labour market on the example of the profession of design engineer in modern conditions of the construction market in Ukraine and abroad.
Ljudmila Shumak
doaj   +1 more source

Electronic and Optical Properties of Vacancy Defects in Transition Metal Dichalcogenides

open access: yes, 2017
A detailed first-principle study has been performed to evaluate the electronic and optical properties of single-layer (SL) transition metal dichalcogenides (TMDCs) (MX${}_2$; M= transition metal such as Mo, W and X= S, Se, Te), in the presence of vacancy
Erementchouk, Mikhail   +3 more
core   +1 more source

Preferences for post‐traumatic osteoarthritis prevention strategies in individuals with anterior cruciate ligament injury

open access: yesArthritis Care &Research, Accepted Article.
Objectives There is growing interest in evaluating new strategies to delay or prevent post‐traumatic osteoarthritis (PTOA) in individuals who have sustained anterior cruciate ligament (ACL) injury. This study sought to determine characteristics of potential treatments that are acceptable to patients with ACL injury.
Kevin Kennedy   +9 more
wiley   +1 more source

Exceptionally Durable CO2 Photoreduction Mediated by Defect‐Engineered CaIn2S4 Nanoflowers

open access: yesEcoEnergy
Solar‐driven CO2 reduction faces major limitations due to insufficient photoabsorption, delayed electron‐hole separation, and a significant CO2 activation barrier. Defect engineering was used to optimize these vital processes.
Jiaming Li, Yihui Du, Kai Wang
doaj   +1 more source

Vacancy Formation and Clustering Behavior in δ-MoN: A Systematic Density Functional Theory Study

open access: yesNanomaterials
Molybdenum nitrides are known to have a series of excellent physical properties owing to their unique bonding nature and electronic structure. However, the synthesized samples often exist in nonstoichiometric phases with structural defects (metal or non ...
Jing Yu, Keda Wang
doaj   +1 more source

Magnetic Frustration and Iron-Vacancy Ordering in Iron-Chalcogenide

open access: yes, 2011
We show that the magnetic and vacancy orders in the 122 $(A_{1-y}Fe_{2-x}Se_2)$ iron-chalcogenides can be naturally derived from the $J_1-J_2-J_3$ model with $J_1$ being the ferromagnetic (FM) nearest neighbor exchange coupling and $J_{2}, J_3$ being the
Dai, Pengcheng   +4 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Les évolutions démographiques 1999-2007 de la France métropolitaine : continuités ou ruptures ?

open access: yesEspace populations sociétés, 2011
Since 2004, France adopted a new census method. So, comparing the population of France in 1999 and in 2007 is not pertinent because the figures were calculated according to different census methods.
Laurent Chalard
doaj   +1 more source

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